Department of Electrical Engineering,   University of Moratuwa

Research & Development Activities
- Some technical papers are also available for download with symbol .

Links: Postgraduate Studies Division,   Progress Report form for overseas academic staff. Extract of Sample Thesis/Dissertaion
          MPhil, MEng by Research, MSc by Research, MEng by Course, BScEng Final Year, BScEng First Year

Master of Philosophy (MPhil) Research Programmes

MPhil Research

  1. Ms Kamala Gamage
    Title: Remote Reading of Power Electronic Energy Meter
    Supervisors: Dr J P Karunadasa, Dr Dileeka Dias, Dr A Ranaweera  
  2. Mr K. K. W. Siriwardena
    Title: Economic and Environmental Impacts of Carbon and Energy Taxes in the Power Sector
    Supervisor: Dr P D C Wijayatunga
  3. Mr AADT Adhikaari
    Title: Development of a methodology for unit commitment in electricity generation
    Supervisor: Dr P D C Wijayatunga
  4. Mr P H Rajapura
    Title: Reactive Power Modulation for Power System Stability Enhancement
    Supervisors: Dr H J C Peiris, Prof J R Lucas

Master of Science (MSc) Research Programmes

MSc Research 2003

  1. Mr V. Kumarathasan
    Title: Multirobot Coordination of snake robots for landmine detection
    Supervisor: Dr D P T Nanayakkara, Dr DPN Nanayakkara, Dr Nalin Wickramarachchi, Dr Amith Munindradasa
  2. Mr A. Aravinthan
    Title: Behavior based control of an autonomous mine detecting snake robot
    Supervisors: Dr D P T Nanayakkara, Dr. Chathura de Silva and Dr. Sanath Jayasena
  3. Mr V. Aravinthan
    Title:Developing an intelligent sensor system for humanitarian demining
    Supervisors: Dr D P T Nanayakkara, Dr. (Mrs) Dileeka Dias, Prof (Mrs) Indra Dayawansa, Dr. Nishantha Nanayakkara
  4. Mr W D Asanka S Rodrigo
    Title: Pricing on Embedded Electricity Generation
    Supervisor: Prof P D C Wijayatunga
  5. Ms Lidula N Widanagama Arachchige
    Title: Effect of Embedded Generators in a Power System
    Supervisor: Dr D P N Nanayakkara

Master of Engineering (MEng) Research Programmes

MEng Research 1999/2000

  1. Mr E Devendra
    Title: Modification of the System Used to detect the Red Weevil in Coconut Palm
    Supervisor: Dr D P N Nanayakkara

Master of Engineering (MEng) Course, Second Year Projects

2001/2002, 2000/2001, 1999/2000

MEng Project 2001/2002

  1. Mr P.S.S. Chandraratne
    Title: Effects on System Voltage by embedded 33 kV generation
    Supervisor: Prof J R Lucas 
  2. Mr A.U. Walpola
    Title: Selecting most suitable components for off-grid micro hydro systems
    Supervisor: Dr D P N Nanayakkara 
  3. Mr W.D.S.W. Alwis
    Title: Reducing burden on Utility through peak sharing and peak shaving with Demand Side Support
    Supervisor: Prof P D C Wijayatunga 
  4. Mr J.P.R. Jayasinghe
    Title: Analyse the power system disturbances created and finding methods of reducing power losses
  5. Mr J.P.S. Weerasinghe
    Title: Modelling of a digital controller
    Supervisor: Dr N K Wickramarachchi 
  6. Mr S.N.A. Satharasinghe
    Title: Practical application of energy management of Royal Glass Factory at Padukka
    Supervisor: Prof P D C Wijayatunga 
  7. Mr P.P.C. Dissanayake
    Title: Selection of an Induction Motor Drives and its economics
    Supervisor: Dr J P Karunadasa 
  8. Mr C.I.F. Attanayake
    Title: Use of over the horizon high frequency radar for detection and location of ships
    Supervisors: Prof Mrs I J Dayawansa, Mr. K. Samarasinghe 
  9. Mr R.P. Tilakeratne
    Title: Development of diagrnostic techniques for condition monitoring of power system components
  10. Mr W.K.L. Prasad
    Title: Condition Monitoring for Preventive maintenance of large induction motors
    Supervisor: Dr. J. P. Karunadasa 
  11. Mr W.M.S.M. Weerasinghe
    Title: Analysis of energy losses in the CEB distribution system
  12. Mr D.K.P.U. Gunatilake
    Title: Power System stability control by fuzzy logic controller
  13. Mr N.Rukmal Jayasinghe
    Title: K Factor Transformer
    Supervisors: Prof J R Lucas, Mr K B M I Perera 
  14. Ms J.K. Kanthi
    Title: Web based electrical control system

MEng Project 2000/2001

  1. Mr R R D S Siyambalapitiya
    Title: Reconstruction of an existing drive circuit for a permanent magnet dc-motor with enhanced performance
    Supervisor:  Dr J P Karunadasa
    Effective date of degree:
  2. Ms N G D Wijesiriwardena
    Title: Investigation of parameters of a stand-alone power generating system, using an induction machine in single-phase generator mode
    Supervisor: Dr J P Karunadasa
    Effective date of degree:
  3. Mr J D K G Hemaratne
    Title: Analysing of voltage surges in grid substation auxiliary supply
    Supervisor: Dr J P Karunadasa
    Effective date of degree:
  4. Mr R P Sarath Chandrasena
    Title: Improving damping in power system oscillations using fuzzy logic stabilizer
    Supervisors: Dr H J C Peiris, Prof J Rohan Lucas, Dr Nalin K Wickramarachchi
    Effective date of degree:
  5. Ms Nelum S. Kalansuriya
    Title: Development of an under frequency load shedding algorithm
    Effective date of degree: 1 August 2003
  6. Mr K.K.A.Chandana Samarasinghe
    Title: Restructuring of Electricity Markets
    Effective date of degree: 1 March 2003
  7. Mr G.M. Prasantha
    Title: Electrification of the suburban network of the Sri Lanka Railways - An economic study
    Effective date of degree: 1 January 2003
  8. Ms D.G. Ajantha K. Wijerathna
    Title: Development of a software package for calculating current rating of medium voltage power cables
    Supervisor:  Prof. J.R.Lucas, Dr.H.Y.R. Perera
    Effective date of degree: 1 January 2003
  9. Mr D.D.P. Yasaratne
    Title: Design of Load Shedding Scheme for Sri Lanka Power System
    Effective date of degree: 1 January 2003
  10. Mr H.C.S. Hettigoda
    Title: Hardware Implementation of a Power System Stabilizer
    Effective date of degree: 1 December 2002

MEng Project 1999/2000

  1. Mr M.A.P.C. Fernando
    Title: Condition Monitoring of Thyristor Converter Banks
    Supervisor: Dr. J P Karunadasa
  2. Ms M.D.Chandani S.K. Jinadasa
    Title: Development of an Optimum undervoltage load shedding Algorithm for preventing voltage collapse
    Supervisor: Dr H J C Peiris
  3. Ms K.V.S.Madhavi Kudaligama
    Title: Private invesment in power and devitations from least cost expansion plan when moving to power sector reforms
    Supervisor: Dr P D C Wijayatunga
    Effective date of degree: 2000
  4. Mr J.B.A Nishantha
    Title: Condition monitoring (of diodes of biusmuess exitation system)
    Supervisor: Dr J P Karunadasa
  5. Mr K.B. Manjula I. Perera
    Title: Safe loading of distribution transformers and its economics
    Supervisor: Prof. J R Lucas
    Effective date of degree: 2000
  6. Mr Nandike Pathirage
    Title: An analysis of phenomenon of voltage collapse in National Grid and investigation of possible remedial actions
    Supervisor: Dr. H J C Peiris
    Effective date of degree: 2001
  7. Mr H.D.Anil Ranjith
    Title: Centralised high frequency supply for lighting systems
    Supervisor: Dr. H Y R Perera
    Effective date of degree: 2001
  8. Mr D Siriwardena
    Title: Design & Construction of programmable multirate electronic energy meter
    Supervisor: Dr. A Ranaweera
  9. Mr W.D.Anura S. Wijayapala
    Title: Engineering productivity of Sri Lankan Engineers
    Supervisor: Dr. H Y R Perera
    Effective date of degree: 2001
  10. Mr Dammika A.J. Nanayakkara
    Title: Surge protection of distribution transformer
    Supervisor: Prof. J R Lucas
    Effective date of degree: 2001
  11. Mr Ajitha R. Ranasinghe
    Title: Assessment of Green House Gas (GHG) mitigating potential of Sri Lankan power sector
    Supervisor: Dr. P D C Wijayatunga, Mr. Shavi Fernando
    Effective date of degree:2000
  12. Mr Hendahewa
    Title: Improvement of lighning protection in low voltage distribution systems in the areas with high isokeraunic level
    Supervisor: Dr H J C Peiris, Prof J R Lucas

BSc Engineering (BSc Eng) Course

First Year Projects 2003, 2002, 2001

Final Year Projects 2010, 2004, 2003/2004, 2002/2003, 2001/2002, 2000/2001, 1999/2000, 1998/1999,

BSc Eng Level 4 - 2010

  1. Design a Power System Simulator Model and Implement the Generator and Motor Controlling.
    Group Members:

    G.U. De Silva
    G.B. Alahendra
    A.C.P. Aluthgama
    P.G.L. Arachchi

    Supervisor Eng. J. Karunanayaka & Prof. J. R. Lucas

    Group Members:
    Supervisor Dr.J.P.Karunadasa

  3. Hands Free Interface for Human Computer Interaction
    Group Members:
    K C Samarawickrama
    H M L Chandima
    K G T D Chathuranga
    S K Chathuranga
    Supervisor Dr. Harsha Abeykoon

  4. Stochastic Self Localization of a Mobile Robot
    Group Members:
    Dharmapriya U.S.S
    Dharmawardena H.I
    Dileepa V.G.R
    Dharmadasa P.W.Y.C
    Supervisor Dr. Chandima Dedduwa Pathiranage
  5. Constructing a position sensing module using an optical sensor for a mobile robot applications
    Group Members:
    M.S Dunuweera
    M Fonseka
    R. T Gunasekara
    S. P Gunasekara
    Supervisor Dr Harsha Abeykoon & Prof Lanka Udawatta

  6. Design and Construction of a Three-phase Digital Energy Meter 
    Group Members:

    D.C. Hapuarachchi
    H.V.L. Hasaranga
    E.A.E.H. Hemachandra
    I.N. Jayasekera
    V.G.R.G. Jayawardane

    Supervisor Dr.Chandima Pathirana
  7. Design and Construction of Synchronizing Check Relay
    Group Members:
    A. Jayawardena
    Supervisor: Dr. JP Karunadasa & Eng. WDAS Wijayapala

  8. THum Free Remote Controller Fan Regulator
    Group Members:
    G.L.D.S. Liyanaarachchi
    D.G.S.D. Madhusankha
    S.A.K.T. Madusanka
    G.H.W.H. Malinga
    Supervisor: Dr. J P Karunadasa

  9. Design and Implementation of an Inverted Pendulum Controller to be used as a Lab Setup
    Group Members:
    Malithi G.M.S
    Mannaperuma M.M.A.D
    M H Mohamed
    S.R.H. Mudunkotuwa
    Supervisor: Dr. Harsha Abeykoon
  10. Energy Monitoring System
    Group Members:
    H. R. G. Nadeesha
    P. M. C. D Navodanie
    M. P. Palihawadana
    B. C. Pasindu
    Supervisor: Dr. P. S. N. De Silva

  11. High Impedance Arcing Fault Detection in Low Voltage Distribution Network
    Group Members:
    P. A. R. S. Paththamperuma
    B A. G. C. U. Perera
    P B. I. Perera
    A C. K. S. Perera
    Supervisor: Dr. Narendra De Silva
  12. Knowledge on Heart Patients Through Stethoscopic Cardiac Murmur Identification for E-Helthcare
    Group Members:
    K.L.N. Perera
    S.K.L.B. Prasad
    D.K. Prasanga
    W.A.R.P. Perera
    Supervisor: Prof. Lanka Udawatta & Dr. Harsha Abeykoon
  13. Design and implementation of unity-power-factor dimmable fluorescent lamp Ballast circuit

    Group Members:
    W.A.D. Premachandra
    W.D.S. Priyankara
    R.P.R.H. Rajapakshe
    K.M.U.S. Ratnayake
    Supervisor: Dr. Nalin Wickramarachchi
  14. Robotics and Agricultural Technology for Landmines Removal in Sri Lanka
    Group Members:

    L.R. Samarakoon
    Supervisor: Dr. M.U.Hemapala
  15. Low Cost SLAM based Mobile Robot Platform for Industrial and Household Applications
    Group Members:
    Supervisor: Prof.Sisil Kumarawadu
  16. Improvements of Reliability of Micro Hydro Power Plants in Sri Lanka
    Group Members:
    N.T.L.W. Vithanawasam
    Supervisor: Eng. Jayasiri Karunanayake & Dr. Udayanga Hemapala
  17. Remote Power Monitoring Through Power Line Communications
    Group Members:
    K.S.K. Weranga
    V.B. Wickramasinghe
    H.B.D. Yasaranga
    C.J. Abeygoonasekara
    Supervisor: Dr. Nalin Wickramarachchi
BSc Eng Level 4 - 2004
  1. Micro Scaled Dendro Power Project for Rural Energy Development
    Group Members:
    Abeyruwan S. W
    Indasiri G. H. P. M.
    Perera U. D. F.
    Suduge U. P
    Supervisor Dr. Nishantha Nanayakkara
    Micro scaled Dendro power projects are the ideal candidates for rural power development especially in dry zone also feasible for the wet and intermediate zone as well. Our objective is to carry out a comprehensive feasibility study and involve in implementation. This project is coordinate by Dr. Nishnath Nanayakara through ENCO (Pvt.) Ltd. and funded by Japanese Bank. 

  2. Power Plant Monitoring and Controlling Software
    Group Members:
    Ameer M. I. S.
    Amila P. G. D.
    Chandrasekara B. L. R. N.
    Hettiarachchi I. T
    Supervisor Dr. Lanka Udawatta
    Most of the power plant software were written by foreign power companies and charge lump of prices for them. As a set of electrical engineers we want to prove that these kind of software can be written locally. This particular software monitors the generating unit and able to control the out put in the sense of quality and qua: ntity. 
  3. Long Term Dynamics of a Power System
    Group Members:
    Boteju G.H. N
    Imbulana K. A. V. A
    Indatissa A. S
    Perera M. K. P. S. C.
    Supervisor Prof. Dr. Lanka Udawatta
    This is a timely project for our country as it experiences total system failures regularly. With this project we expect to address the issues that drive these system failures. In here we model the generation and transmission systems (present & future) using MATLAB. Then we evaluate the inertia of the present system and different types of generators to explain the un-stability of the power system of Sri Lanka. Finally characteristics of the new coming scheduled generators are going to be suggested.

  4. Cable Cost Optimizer
    Group Members:
    Jayawardena S. R. M. P.
    Malaviarachchi K. A. M. K. G. A.
    Prasanna L. C.
    Thotagamuwage S. S. K
    Supervisor Prof. J. R. Lucas
    Cables comprises of major portion of an electrical installation. When designing an installation general procedure what the industry follow is to select the cable with minimum permissible cross sectional area to minimize the initial investment cost of the cable. Obviously the optimal method is to select cables on a basis, which minimizes the sum of initial cost and cost of the losses over the economic life. Cable Cost Optimizer (CCO) is the software solution designed to fulfill this need. CCO is based on IEC –287 regulation (Economic Optimization of Power Cables). 
  5. Intelligent Robotic Snake Colony
    Group Members:
    Lloyd C. P.
    Masinghe W. D.
    Manathunge M. M. A. S. 
    Piyathilake J. M. L. C
    Supervisor Dr. Thrishantha Nanayakkara
    Our project is to develop a intelligent robotic snake colony for landmine detection and removal. Each snake robot will consist of micro controller based embedded system with sensors like IR , Sonar whiskers and a new crawling mechanism. 

  6. Software for Tower Spotting in Transmission Line Layout 
    Group Members:
    Tantirimudalige S. J. D.
    Wimalaratne M. H. D.
    Wimalasena N. K. R.
    Yaheya G. F
    Supervisor: Dr. Thrishantha Nanayakkara
    The objective of the project is to present to the Ceylon Electricity Board (CEB) transmission design branch, software, automating the existing manual tower spotting design process. Software ensures more accuracy and thus better-optimized design. We intend to prepare an overall design for the software using Visual Basic and create a customized version for use in the local context. This will consider tower placing on a given terrain, the indication of relevant clearances and other relevant electrical and mechanical parameters considered in the process. 
  7. Sound Source Localization Assisted Active Security Camera
    Group Members:
    Upendra G.A.A. 
    Vitharana U.B. 
    Wijekoon M.P.A. 
    Wijesinghe W.T.P
    Supervisor: Dr. Thrishantha Nanayakkara
    To design and develop a system which have the ability to automatically locate any suspicious noises using Sound Source Localization and to steer the camera (three dimensional operation) to target the detected noise source. Multi sensor data fusion is used to obtain optimal target detection. Additional control signals will be provided for activation of an alarm/video recorder etc and/or automated user notification via Internet. 

  8. Technical Issues in the Penitrating Wind Converted Power to the National Grid of Sri Lanka
    Group Members:
    De Silva T.Y.N.
    Fernando L.A.S.
    Fernando M.C.A.
    Hendalage D. S. T.
    Gunawardhana H.A.D.N.P.
    Supervisor: Dr. Nishantha Nanayakkara
    Wind is one of the most widely used renewable energy source in the world nowadays. The Southern and Northwest costal area of Sri Lanka has significant potential of wind energy. The main objective of the project is to assess the wind resource potential in the Southern area and design a wind farm for a suitable location in the region. Analyze the effect of penetration of Wind Energy Converted System (WECS) to the national grid is another important part of the project.

  9. Develop a Small Scale Wind Mill / Utilization of Wind Energy Resources in Sri Lanka
    Group Members:
    Soysa W.H.I.D.
    Peiris L.R.
    Siriwardena K.A.P.
    Sandagiri C.A.
    Supervisor: Dr. Nishantha Nanayakkara
    The project is going on to develop a small-scale windmill at a competitive price. The major modification is the replacement of conventional PMGs by widely available car alternators. The model generates 163W at 7.2m/s of wind speed successfully; cut in is 3.5m/s; the rated power is 300W at 9m/s. The model features furling system, field controller, charge controller with AVR, inverter and auto-braking on a dump load. In addition to that feasibility study is going on for identifying a suitable wind turbine for Narakkalliya.

  10. Relay Testing Unit
    Group Members:
    Sivasatheesan S.
    Talbad P. R.
    Uthayashanger S.
    Supervisor: Dr. Thrishantha Nanayakkara
    As the name implies, Relay Testing Unit is the equipment used for testing purposes of protection relays. The proposed unit for the grid connected embedded power plants has the following main goals.
    § Customize product’s features to suit CEB requirements.
    § Reduce the very high production cost and maintenance cost associated with it.
    § Make it available with reduces testing charges.

  11. Impact Assessment and Game Theory Model for the Village Micro Hydro Projects of Sri Lanka
    Group Members:
    Dissanayaka I
    Ediriweera S. H.
    Gunaratne K. G. C. B.
    Prasanna D. P
    Supervisor: Dr. Nishantha Nanayakkara
    Collect data form several existing village hydro power plants and analyze the data to evaluate the changes over the Sri Lankan community. Develop a game theory model for the village micro hydro systems to maximize the total benefit the village community, country and the environment.

  12. Electronic Governor Controller System for Mini-Hydro Power Plant
    Group Members:
    Asanka L. P. G.
    Colombage D. M. H.
    Desilva M. R. H. R.
    Tharanga S. H. N.
    Supervisor: Dr. Nishantha Nanayakkara
    The heart of this electronic governor system is going to be a Micro-controller. Main part of this project is designing Frequency counters, water level sensor, stepper motor driver and designing the controlling system using Artificial intelligence. Most of these are done by programming the Micro-Controller. Testing & implementation will be carried out at Niriella hydro power plant. 

BSc Eng Final Year 2003/04

  1. Investigating the Technical and Financial Viability of Wind Energy in Sri Lanka
    Group Members:
    R.T. Thotawatta
    D.L. Susewhewa
    D.C. Wanaguru
    A.S. Wickramasinghe
    Supervisor Prof. Priyantha Wijethunge
    Wind energy is one popular energy source used to produce electricity in the world. For Sri Lanka, it is still an emerging concept. It is worth to study the technical and financial viability of wind energy as a solution for the energy crisis in Sri Lanka. The project is based on the wind data analysis, micrositing, cost analysis, and system stability analysis to find three suitable locations each for off shore, coastal and in country.

  2. Impedance Permeability Tester
    Group Members:
    J.M.K.E. Jayasundera
    Supervisor Prof. J.R. Lucas
    When manufacturing transformer cores, a test has to be carried out in order to verify that their magnetic characteristics remain unchanged after the baking process. Since these cores are the basic building blocks of transformers it is very important to make sure that they lie within acceptable range, as long as the magnetizing characteristics are concerned.
    The objective of this project is to develop a test instrument, which will plot the present impedance permeability characteristic of a core and compare that with the standard characteristic curves provided by the supplier.
    This project is carried out under the assistance of Toroids Company and the final product will be used by Toroids Company in their production line.

  3. Efficiency Enhancement of an Energy System
    Group Members:
    T. Atapattu.
    G.A.M.D. Wickramathilaka.
    K.I. Yapa.
    T.J.E. Yasapalitha.
    Supervisor Prof. Priyantha Wijethunga
    We are supposed to examine energy consumption in Galle-face Hotel, Colombo and propose possible energy efficiency measures. Electrical energy audit is carried out with the assistance of DSM branch of Ceylon Electricity Board. The collected data will be analyzed with a software model that will be developed particularly for this project. Since the hotel personnel are willing to expand the present electrical system, we wish to make our proposals in that expansion too.

  4. Power System Protection Study for a Wind Power Plant
    Group Members:
    V.P. Mahadanaarachchi
    N.P.S.K. Navarathne
    L.K. Dissanayake
    D.T.D. Dissanayake
    Supervisor Dr. J.P. Karunadasa
    This study is based on a proposed wind power plant at Puttalam. It extends to about 6km in the Puttalam coastal belt , employing 24 horizontal axis wind turbines , each has a generating capacity of 850kW totaling up to 20 MW. Generating voltage will be 690V and immediately step-up to 33kV using individual transformers and transmitted using a double circuit line and connected to the Puttalam grid substation. Protection for the transmission line and the generator/transformer unit will be considered during the transient and steady-state conditions. The specialty will be the study is focused on induction generators.

  5. Low Cost Metal Detector for De mining Project
    Group Members:
    R.M.J. Ratnayaka.
    S.A.P.C. Siriwardana
    A.G.P. Silva
    K.A.M. Priyanga
    Supervisor Prof. J.R. Lucas and Dr. Trishantha Nanayakkara
    The goal of this project is to design Metal Detector which will be used for de-mining applications in the North and East parts of Sri Lanka. This can iscriminate various metals and sizes and buried depths. During the project development stage various Electromagnetic Principles are used to detect various metal objects.

  6. Multi-Purpose Waveform Analyzer
    Group Members:
    A.D.G. Chandrasena
    D.M.J. Dissanayaka
    D. Amarasinghe
    H.K. Thushara
    Supervisor: Dr. J.P. Karunadasa
    The analysis of waveforms is very useful in many ways in engineering applications. The multi purpose waveform analyzer does this for you with the following features. It can be used as a digital storage oscilloscope, spectrum analyzer, and 3 phase power analyzer. The other advantage is that the instrument can be used as a 1, 2, 3 or 6 channel device (conventional CRO's have only two channels). The multi purpose waveform analyzer does this with only a small cost on the system.

  7. Unauthorized Tapping Detector
    Group Members:
    S.A. Fernando
    S.P.I.D. Ilukkumbure
    P.T. Paranavithana
    N.A.J.L.P. Wickramasekera
    Supervisor: Prof. J.R. Lucas
    Consumers illegally tap the service wire by connecting cables in between L-iron and the energy meter in the electrical distribution system. The objectives of our project are to develop a method and a device, which is capable of detecting such tapings. The proposed method is based on a reflection of a high frequency signal.

  8. Behavior Based Navigation of a Mobile Robot
    Group Members:
    H.K.M. Gunasekara
    K.T.M.U. Hemapala
    U.N. Gnanarathna
    D.D.A.S. Jayasiri
    Supervisor: Dr. Trishantha Nanayakkara
    The project is to develop a mobile robot (an unmanned boat) which sails using wind power. The robot can be guided to a particular location by a remote location and the robot is capable of reaching that location and collect some data which can be used for various applications and send it to the station.

  9. Whether TOD (Time of Day) Tariff Reflects True Peak Generation Cost?
    Group Members:
    M.A. Charitha Karunarathne
    S. Jeyashanker
    S. Sudarshan
    A. Karthikeyan
    Supervisor: Prof. Priyantha Wijethunge
    As the major power producer in the country, CEB (Ceylon Electricity Board) has to incur high cost during the peak power generation, even though large share of energy is generated from hydroelectric systems with low operating costs. CEB introduced Time of Day tariff in 1988 to Industrial customers to reduce the capacity in peak hours as one of their major objective. But the absence of a well developed pricing policy have led to a situation where the prices have failed to reflect the true cost of generation and supply of the energy to some customer groups.
    In our project we try to compare the average cost to CEB when producing peak power and the CEB’s selling price to Industrial power consumers who categorized under two rate tariff.

  10. Analysis of Corona discharge and Earth fault Calculation
    Group Members:
    R.M.H.L. Thushara
    S. Vengadesan
    S.K. Vijithananda
    S. Venkataraagavan
    Supervisor: Prof. J.R. Lucas
    In Moratuwa, at Koralawala area, there is corona on 33kv over headline. We have to do the analysis to find out the reasons for the corona and the corrective measures. Not only this one we have to analysis about earth fault in 33kv line. Finally the effect of the corona in low voltage distribution lines also will be taken into account.

  11. Development of a Robotic Arm for De-Mining Applications
    Group Members:
    P. Samsoodeen
    D.A.N. Lakmal
    N.A.P.S.K. Narangoda
    T.M. Weerakkkody
    Supervisor: Dr. Trishantha Nanayakkara
    The goal of this project is to design and build a working prototype of a robotic arm, which will be used for de-mining applications in the North and East regions of Sri Lanka. The arm will have a force sensor that will detect the gripping force exerted by the fingers. This force sensor will provide a feedback to the microcontroller that will then control the motors governing the motion of the arm. The principle involved is a closed loop control system.

  12. Implementation of SMPS (Switch Mode Power Supply)
    Group Members:
    S. Prathab
    T. Piratheepan
    S. Suren
    K. Ganka
    Supervisor: Dr. J.P. Karunadasa
    DC/AC inverters (50Hz) are used in many cases as back up supplies. In most cases DC supply is a 12V dc battery. And for stepping up the inverted voltage 12/230 transformer is used which is very bulky since operating frequency is very low (50Hz). There are small portable inverters that have been manufactured using another methods to step up 12Vdc to higher level. There are many different techniques. One method is to use dc/dc boost converter in first stage and then convert that high dc voltage to 230 ac.

BSc Eng Final Year 2002/03

  1. Computerized Test Bench for CFL Lamps
    Group Members:

    Perera MHC
    Lakmana LAWP
    Wimalasiri GHCK
    Senaviratne NA
    Supervisor: Dr.Naliln Wickramarachchi
    Today we find many types of CFL bulbs in the market from various manufactures. The price ranges of those bulbs are highly varied according to the manufacturer though they have the same wattage.
    Thus the objective of our project was to measure the current waveform and voltage waveform and calculate true power, apparent power, effective power factor and total harmonic distortion using the current and voltage data. Through this software, one will be able to see the distorted voltage and current waveform and at the same time plot the graph of the frequency spectrum. The plot of the frequency spectrum is used to analyze the harmonics of the waveform.

  2. Energy Saving Methods for Transformer Oven
    Group Members:
    Jagoda JAIT
    Sirisena NHKL
    Vitharana JA
    Dematagolla KRS
    Supervisor: Prof.J.R.Lucas, Prof.P.D.C.Wijayathunga, Mr.Rukshika Pathberiya(LTL), Mr.Kosala Gunwardhana(LTL)
    The drying time of distribution transformer core-winding assembly, at the transformer plant, Lanka Transformers Limited is presently based on the high voltage rating and the oven consumes larger proportion of total energy consumption. It is the normal practice to dry out the transformer core-winding assembly for twenty-four hours for 11 kV distribution transformers and thirty-six hours for 33 kV distribution transformers, irrespective of the capacity. This has been decided considering the total capacity of transformers kept in the oven during the drying process. This achieves a larger than required drying time, which has been considered to have a higher safety margin. But, if the exact drying time can be found by means of an acceptable method and by implementing a user friendly temperature control system we can save energy and achieve efficient & effective drying.

  3. Implemantation of Electronic Governer Control System
    Group Members:
    Amarasiri KPPM
    Chinthaka AK
    De Silva GR
    Damayanthi RMT
    Supervisor: Dr. D.P.N.Nanayakkara, MrChandana Karawita
    The governor of a grid connected mini-hydro power plant first builds generator frequency up to the grid frequency, and also it controls output power utilizing the available water supply to the turbine. The entire operation is achieved by controlling the grate valves of the turbine. Almost all the turbine unite use this method of control and it comprises of a mechanical actuator and electrical control device to give the desired command signals to the actuator to open or close valves appropriately. The main intention of this project is to design a PC based controller accessing that point of control mentioned earlier with high reliability.

  4. Relay Testing System
    Group Members:
    Weerasingha AA
    Wickramasinghe WAS
    Wijeratne C
    Wagaarachige DAE
    Supervisor: Dr. D.P.N.Nanayakkara, Mr. Ajith Ratnayaka, Fenton (Pvt) Ltd
    Relay Testing Unit is the equipment used for testing purposes of protection relays. The function of the Testing Units involves generating various fault conditions and check Relays' responses.
    Ceylon Electricity Board (CEB) is the sole proprietor of the Relay Testing Units in Sri Lanka. The cost of a Relay Testing Unit is around 5 million rupees. Grid connected Embedded Power plant has to do the relay testing time intervals specified by CEB and it costs 250 thousand rupees, per test.
    Proposed "Relay Testing Unit for the Grid Connected Embedded Power Plants" has three main goals.
    1. Customize product's features to suit CEB requirements
    2. Reduce the very high production cost and maintenance cost associated with it
    3. Make it available with reduces Testing charge.
    Proposed design has all the facilities to create dynamic test environment to observe the relay responses. This ensures the new unit's capacity to compete with existing products available in the market. Further, the success of the project can be used to dynamic control of motors (Induction motor control, Sinusoidal BLDCM control), UPSes which are few areas having highest potential of growth.

  5. Grid Substaton Earthing System
    Group Members:
    Ariyadasa DK
    Kandeepan S
    Kesawan M
    Thayalan S
    Supervisor: Prof. J.R.Lucas, Dr. Nalin Wickiramarachchi, Mr. D.G.Reinzie Fernando
    The proper design of an AC substation earthing grid involves ensuring that the substation environment and immediate perimeter is free from the possibility of fatal electric shock and that it provides a low impedance path for fault and earth leakage currents.
    The scope of our project was to implement the "ESD Tool" software which enables the design engineer to calculate the required parameters for design and further helping them to analyze how voltage going to distribute in the earth mat using the 3D voltage profile.
    Some of the features of this software are easy to use format; tedious calculations can be performed quickly, and also generate 3D voltage profile for analyzing purpose, using IEEE 80 standard.

  6. Substation Control & Monitoring System
    Group Members:
    Illangakoon AR
    Gamage NSD
    Subasinghe BSK
    Pathiraja C
    Supervisor: Dr. J.P. Karunadasa, Mr. W.D. Chaminda(LTL)
    Trend in the recent years regarding substation operation have been the introduction of centrally control & monitoring system. This has gained wider acceptance mainly due to the ease of control and enhanced performance. Our main objective was to design a low cost but efficient PC based interface to cater to the requirements of the power plant engineer. Some of the features of SubSys2003 is user-friendly interface for plant operators to monitor and control plant operation and performance, history of plant performance and events which allow easy fault finding, Data upon which to base continual improvement adjustments.

  7. Co-generation in Sri Lankan Industrial sector
    Group Members:
    Bogahapitiya AS
    Karawita AMS
    Gamage NS
    Opathella GKC
    Supervisor: Prof. P.D.C.Wijayathunga, Dr Tilak Siyambalapitiya
    Industries and commercial buildings all over the world are the major energy end-users. In the developing countries of the Asia-Pacific region, electricity accounts for only around 20 percent of the total energy demand of the industrial sector, the remaining demand being mostly in the form of thermal energy. Likewise, as much as 60 per cent of the energy demand of modern high-rise buildings in the tropical climate comes from comfort cooling. Typically, state-owned power companies assure electricity supply whereas on-site boilers and chillers meet the heating and cooling needs of the users, respectively.

  8. Three Phase Pre-paid Digital Energy Meter
    Group Members:
    Gunasekara RMSJ
    Gurusinghe DR
    Herath WCK
    Idamegama RMDCB
    Supervisor: Prof. Priyantha Wijayatunga, Dr. J P Karunadasa
    By looking our project viewpoint, "Pre-Paid Energy Meter" as the name implies that it is based on the debuting of the energy cost used during a particular period using a pre-paid card system. In addition to that it has the facility to display current balance, voltage of the mains, frequency etc using a display unit which makes it very much user friendly package and we hope it would offer remarkable benefits not only to the energy supplying authority (CEB) but also to end customer in a highly user friendly manner.

  9. Cost & Financial Evaluation Tool for Mini Hydro Power Plant
    Group Members:
    Wimalasena NKRY
    Neroshan DPI
    Ranatunga RAAS
    Dileepaa Lathsara MP
    Supervisor: Dr. D.P.N.Nanayakkara
    The objective of this project is to develop a Software for Minihydro Power Plant Developers to calculate the optimum cost of a Project and to provide a financial evaluation. User required to enter only the rain fall data and other basic inputs and the Software will provide necessary details to the user.

  10. Power Line based Intercom
    Group Members:
    Cassim FS (Miss)
    Suhinthan M
    Jathhunanthanan J
    Thisokumar K
    Supervisor: Dr. J.P.Karunadasa
    Every building has power line and the main function of this power line is distributing electric energy to your daily electric equipments. So can we use this existing power line as communication network to make an intercom system? Yes we can make it without expense of running new wiring. Further this system can be used as musical distribution system and to monitor the rooms in the buildings.
    To make intercom communication through the existing power line, we need to send our audio signal with the 50 Hz power signal. But can we send our audio signal through the power line without any modification and can we receive that as it is? No because our audio signals frequency is in the range of 20 Hz to 20 kHz, so we cannot extract our audio signal from the power signal. Therefore we modify our audio signal to distinguish it from the power signal.

  11. Computer Controlled DC Servo Drive
    Group Members:
    Perera KND
    Ranasinghe RADS
    Ranatunga AUS
    Jayawardana PKL
    Fernando SRM
    Supervisor: Dr. J.P.Karunadasa, Dr Nalin K Wickramarachchi
    The objective of this project is to develop a drive circuit to control PM dc motor through computer interface. Though in this project we tried to control, the motor speed in both directions with braking, using H Bridge and its drive circuit with feed backs. In addition we improved this drive circuit to achieve quick start for given speed, sudden change of direction of rotation and quick stopping.

  12. Software Contolled Multimode Single Phase Inveter
    Group Members:
    Sumanasekara RMSMB
    Sumanasinghe UGA
    Suriyaarachchi DHR
    Ekneligoda NC
    Supervisor: Dr. J.P.Karunadasa, Dr.Naliln Wickramarachchi
    Power Electronic inverters are widely used in various applications like induction motor controllers, in relay testing equipments, in uninterrupted power supplies (UPS) etc. Especially in applications like in induction motor controllers and in relay testing equipments, not only the frequency, but also the magnitude of the voltage need to be varied. For these kinds of applications pulse width modulated (PWM) inverters are more suitable. In PWM inverters, to change the magnitude of the voltage, only the value of the duty factor of the switching signals need to be varied.
    PWM inverters available in the market normally have only one mode of operation and they are fairly expensive too. If someone is going to build a multimode inverter by using discrete components it would be very expensive and the size of the inverter circuit would be very large. The aim of this project is to build a multimode inverter in which the switching of the power switches is done by software. It will reduce the hardware requirements considerably. It is expected to implement this inverter to supply variable voltages and frequencies.

BSc Eng Final Year 2001/02

  1. Energy Information System
    Group Members:

    Jayaratne KCR
    De Silva KTSP (Miss)
    Welendawa TK
    Warusapperuma WKMP
    Supervisor: Prof. M. P. Dias
    Any organisation that practices Energy Management properly makes the operations more profitable. By practicing energy conservation in the context of an Energy Management program, the energy consumer becomes more conscious of how Energy is being used, and of the actual costs of energy waste.

  2. Pre-Feasibility Study For Electrical Generation Using Ocean Currents
    Group Members:
    Harinath PKE
    Jayamumi SLYDP
    Indrajith WAKT
    Jayawardena PL
    Supervisor: Dr. D.P. N. Nanayakkara
    The study mainly focuses on the power generation potential of ocean currents in the Kirinda area by studying the available technologies and required conditions. The existing data records and past data, specially Admiralty charts, ,Floating buoys data and Ship drift data, were gathered in order to obtain a basic idea of current patterns and relationship with monsoons(north east and south west monsoon).
    There are two basic scenarios causes the strong currents between the two reefs (Great basses and Little Basses)
    The results obtained using for the simulations of tidal and wind driven currents shows a significant component Which must be further enhanced by the addition of thermal current component.

  3. Modeling and Transient Stability analysis of HVDC Link
    Group Members:
    Rodrigo WDAS
    Jayatunga JVUP (Miss)
    Nisantha TN
    Ranasinghe PHLJ
    Supervisors: Prof. J.R. Lucas, Dr. H.J.C. Peiris, Mr.D.G.Rienzie Fenando
    The purpose of this study is modeling and transient analysis of proposed 500MW/±400V bipolar HVDC interconnection in between India and Sri Lanka. For this analysis EMTDC/PSCAD simulation software was used and the Cigre Benchmark model for mono polar HVDC system (1000MW /500kV) was referred. The dynamic behaviour of the dc link and the AC systems under start up, shut down, load rejections and fault conditions are analyzed in the paper.
    This paper proposes HVDC as an attractive alternative for the power transmission in between two countries, which leads to fully integrated international grid. Because the conceptual scheme of the control strategy represented here have the advantages in terms of reliability and controllability.

  4. Development of Mechanical and Electrical Forms of Rotating Magnetic Field for Exhibition Purposes
    Group Members:
    Liyanagamage UD
    Kumarasinghe RL
    Vidyarathna S
    Abeysekara DM
    Supervisor: Dr. J.P. Karunadasa
    When a balanced poly-phase current flow in a balanced poly-phase windings, a rotating magnetic field is produced.
    Thus, all poly phase machines are associated with rotating magnetic fields in their air gaps. Thus, a knowledge of the Rotating field produced by a polyphase winding is essential for understanding ac machines such as synchronous & induction machines.
    The purpose of this project is to implement and simulate the theory behind the rotating magnetic field, for educational purposes considering only or 3-phase Machines.

  5. Power Quality - Harmonic Suppressor Design
    Group Members:
    Angammana AMCJ
    Tennakoon SMK (Miss)
    Seyon K
    Weerasekara JMCA
    Supervisor: Prof. M. P. Dias
    In little more than ten years, electricity power quality has grown from obscurity to a major issue. One of the most severe problems of power quality is harmonic distortion and it’s consequences.
    Particularly, the increasing penetration of power electronics-based loads (non-linear loads) is creating a growing concern for harmonic distortion in the AC power system. Then, electricity power quality is major issue for utilities and their customers and both are quickly adopting the philosophy and the limits proposed in the new international standards (IEC, EN, BS, IEEE).
    Consequently power-conditioning equipment is becoming more important for electric utilities and their customers.
    Up to now, various harmonic mitigation equipment or solutions have been proposed. Most of them are tuned passive filters, series reactors etc. New innovative equipment such as active harmonic conditioners or active filters also play an important role in compensating the power harmonics.

  6. Cost Optimization of Run-Off River Type Hydro Power Project
    Group Members:
    Wijesana KAI
    Weerasinghe SR
    Wimalasena JGH
    Sirimanna UI (Miss)
    Supervisor: Dr. N. Nanayakkara

  7. Usage of Earth Wire in Medium Voltage Distribution System
    Group Members:
    Mahakalanda I
    Maheepala BAPN
    Perera MVK(Miss)
    Priyankara MKCT
    Supervisor: Prof. J.R. Lucas

  8. Active Control of Sound Propagation in Ducts
    Group Members:
    Karunarathna HRCS
    Shammika ANM
    Gunawardana CA
    Kariyawasam LGP
    Supervisor: Dr. N.K. Wickramarachchi, Mrs. L.P.J.P. Premaratne
    Active Noise Control belongs to the fields of control Systems Engineering and Signal Processing. This project gives the model of eliminating noise propagation in Ducts. In a duct the signal is limited to a one directional Signal. Noise signal propagating in a duct is taken to a Computer through a Data Acquisition Card (DAC). This signal is analysed by the Computer and generate a signal with the same amplitude but 180 phase shift. (i.e. Inverted Signal). This signal is given to the duct through the DAC Card. By the principle of destructive interference these two signals will be cancelled and eliminate the noise. To input the noise signal use a National Instrument’s Data Acquisition Card and the signal is input by a Micro phone. Signal is analysed and generate the cancellation signal by using a software written by using Visual Basic Language. Cancellation signal is given to the duct through the DAC Card with a amplifier and a Speaker.

  9. Conversion of DC motor for servo applications
    Group Members:
    De Silva JLP
    Dharmasiri SA
    Dassanayake CL
    Fernando SRM
    Supervisor: Dr. J.P. Karunadasa
    Nowadays servo motors have become a part and a parcel for industrial operations, as all most all the manufacturing lines in industry have been automated in order to achieve higher production and to compete in the market. Servo motors are used in data encoders as motors with ranges in excess of 1MW for winding machines used in mines. There are lots of places where the servo motors are used. In robotic applications servo motors are used to move the robotic part to a relevant position by means of controllers. In market there are servo motors with various rating both as DC and AC servo motors.
    Servo motors have a special property that is starting and stopping immediately as soon as the power is ON or OFF. This property leads to use the servo motors for above mentioned applications and different position controls. The main cause behind the special properties associated with the servo motor is the low inertia of its rotor. The low inertia is achieved by fabricating the rotor with a special material which is of less weight but capable of producing the necessary magnetic flux. The main drawback of this material is its high cost which makes servo motors very expensive.
    Therefore servo motors available in the market are very expensive. Due to this reason small scale industries will have to spend a big capital to achieve their relevant task which needs to use servo motors. So it is important to have motors which can be used for servo applications with lesser cost. The project described here will give such a method to use conventional dc motors for servo applications with very low cost. Firms who are using the proposed motor have to spend only about 1/10th of the cost of servo motors available in the market. For this purpose we need to use a permanent magnet DC motor with an electronic drive circuit part in order to control the motion of the motor.

  10. Nodal Pricing at Grid Sub-stations
    Group Members:
    Herath CD (Miss)
    Edirisinghe EMCP
    Amarasinghe AGLH
    Hettiarachchi YSK
    Supervisor: Prof. P.D.C. Wijethunga, Dr. H.J.C. Peiris
    NODAL pricing is a branch of transmission pricing which tries to give more cost reflective prices at the grid substations. The prices thus calculated essentially include the losses due to network flows and uncertainties associated with power transmission. Hence this method of pricing allows the supplier to charge the correct price from consumers without bearing unnecessary burden. On the other hand, by having a structured pricing strategy consumers will not suffer from ad-hoc changes to their electricity prices and they will be charged the correct price. Hence fairness & equity could be established for both parties, while maintaining the economic efficiency. The importance of Nodal pricing becomes vital, for the restructured Sri Lankan power sector. The formation of separate entities for Generation, Transmission and Distribution gives rise to transfer prices of electricity between each entity.
    Electricity transmission is considered to be the only monopoly and hence open access to transmission system and fair, cost reflective pricing of transmission services are important for healthy competition in the power sector.
    Among the numerous approaches proposed for the pricing of transmission services, methods based on marginal costing have gained wide acceptance due to their economic efficiency. The optimal pricing methodology based on maximizing consumer net benefit is a marginal costing approach, which has the capability of providing optimal transmission investment & return, stability of pricing and transmission security. This paper describes about the optimal power flow method and how it is implemented using software.

  11. Socio Economic & Environmental Impact of Home Solar System
    Group Members:
    Abeysekara PK
    Liyanage PW
    Rajakaruna PD
    Salgado MRN
    Supervisor: Prof. P.D.C. Wijethunga
    This paper presents the results and analysis of a study conducted with the objective of investigating the social, economic and the environmental impact of Solar Home Systems (SHS) in Sri Lanka.
    The study was conducted out through a sample selected from the district of Badulla, in the Uva province, basically considering the sub sectors of households given a grant for the acquisition of SHS and the households, which were not.

  12. Power Line Carrier Communication Systems
    Group Members:
    Landerz NR
    Jayagobikrishna S
    Shantharabavan T
    Rikaz MHM
    Supervisor: Dr. J.P. Karunadasa
    This report discusses the power-line communication over the low-voltage grid, which has A very high potential growth in the near future. The main advantage with power-line communication is the use of an existing infrastructure. Wires exist to every household connected to the power-line network.
    This report starts with a general introduction to powerline communication. Then it discusses the application of an existing home automation system, then communicating over a low-voltage grid is investigated in order to obtain some knowledge of how the power line acts as a communication channel. The power-line communication channel can in general be modeled as a system with frequency dependent signal-to-noise ratio varying with time over the communication bandwidth. Finally we describe the basic parts of the system that eventually could be used for information the power-line communication channel.

BSc Eng Final Year 2000/2001

  1. pdf downloadImplementation of a portable micro hydro power plant using an induction generator controller
    Project Group: V Aravinthan, AV Jayadarshana, JC Jayakody, KKLS Kothalawala
    Supervisor: Dr Jahan Peiris, Mr. Indika Keerthiratne
    In generating electricity for a short duration use, the normal practice is to use a diesel (or Petrol) generator with the relevant capacity. However, during the construction period of a hydro power plant (mainly mini-hydro) a portable micro hydro power plant can be used instead to supply the site demand. To achieve this, an induction motor can be used as a generator with an Induction Generator Controller (IGC) used to maintain the output voltage at a constant value. This paper presents the basics of such a project, which has been implemented for Nivindu (Pvt.) Ltd at Belihuloya.

  2. pdf downloadDesign of VAR compensation for Pannipitiya grid substation
    Project Group: D.D.Magalla, K.Nareshkumar, K.A.S.N.Perera, K.Varatharajah(Miss)
    Supervisor: Dr.H.J.C.Peiris, Mr.D.G.Rienzie Fernando
    Reactive Power (var) Planning is the determination of the sizes and locations of shunt var sources (capacitors, reactors, static var systems, synchronous condensers) and their efficient coordination with existing var sources. They improve system properties such as steady-state and dynamic stability, voltage profile, reactive power flow and fault situations (over voltage, load rejections etc.) due to rapid response to voltage deviation. In this project, the data of the Pannipitiya Grid Sub Station and the surrounding bus bars were analysed and the amount of compensation required was found. A suitable compensation method was also selected considering this amount.
  3. pdf downloadSwitch mode variable DC power supply with output voltage regulation
    Project Group: L.W.C. Gunarathne , U. A. R. Fernando, B. N. R. Fernando, A. C. Divitotawela
    Supervisor: Dr. J. P. Karunaradasa
    One of the important devices in any Electrical /Electronic lab would be a Variable DC Power Supply. Most of the power supplies areimplemented using transformers and for high ratings the power supply would be bulky.
    Further regulation of output voltage is restricted to small range. These disadvantages can be overcome using the switch mode operation. Switch mode power supplies are much lighter than that of transformer power supplies which has the same rating. Further output power regulation is spread along a wide range. It is possible to keep the output voltage at constant value given that the input supply voltage is higher than the required output voltage.
  4. pdf downloadDigital Energy meter with a smart card module
    Project Group: G.T. Wickramasinghe, R.T. Maldeniya, R.U.H. Vitharana and K.M. Warnakulasuriya
    Supervisor: Dr. H.J.C. Peiris and Dr. D.A.I. Munindradasa
    The main objective of our project is to integrate the rapidly evolving Smart Card Technology with the conventional billing system adopted by the electrical utility companies. In more specific terms it is to design and implement an add-on module for the conventional analog energy meter not only to make it display the total cost and the number of electricity units in real-time but also to store these values in a smart card so that billing process can be at least semi automated. Also this will allow the Electrical Utility Company to eliminate the need to employ meter readers to visit every electricity consumer in order to record the meter reading.
  5. pdf downloadPC based speed controlling of a DC motor
    Project Group: Kumara M.K.S.C, Dayananda P.R.D, Gunatillaka M.D.P.R, Jayawickrama S.S.
    Supervisor: Dr. J.P. Karunadasa
    The DC motor is an attractive piece of equipment in many industrial applications requiring variable speed and load characteristics due to its ease of controllability. The “Chopper drive” based speed controlling method is superior in comparison to “Thyristor Controlled Bridge Rectifier” method as far as DC motor speed controlling is concerned. PC based software controlling is adopted to retain simplicity & ease of implementation.
    This paper is written with the objective of illustrating how the speed of a DC motor can be controlled using a chopper drive. It further explains the methodology used in obtaining the speed feedback, software implementation of the PID controller and the required signal generation to drive the chopper. A Closed-loop Feedback Control System adopted, brings the motor to the speed set by the user irrespective of the load.
  6. pdf downloadStudy of Lightning induced voltages on overhead conductors
    Project Group: C.Weerakoon, D.G.D.S.N.Weerapperuma, S.K.S.Pushpakumara, B.M.A.T.Priyadarshana
    Supervisor: Dr. H. J. C. Peiris
    Lightning over voltages are important when the distribution system is considered rather than transmission systems which have higher basic insulation levels. For lightning over voltages on distribution lines, the induced voltage due to direct stroke and induced voltage due to lightning to a near place or object are considered. In this context we are considering only voltage magnitudes but not flash densities and their occurring probabilities. The theory for deciding the voltage due to direct stroke is straight forward and to decide the induced voltage is somewhat complex. In this context we are using the equations from IEE & IEEE transactions and some other references. Using these equations we have implemented computer program to calculate the induced voltage on a distribution line of a multi-conductor system and to draw the graphs between induced Voltage vs Time. In this program we have taken into consideration the effect of a single earth wire with grounding only at one point for simplicity.
  7. pdf downloadRemote control of electrical appliances
    Project Group: H.E. Perera, A.I. Kaluarachchi, R.S. Senaratne, Miss D.G.N. Dayaratne
    Supervisor: Dr. N. K. Wickramarachchi
    In the modern busy society, it would be very useful if people can operate their domestic electrical appliances when they are away from home. This can be employed in instances such as, switching on lights in the evening for security reasons, and switching on a water heater from the office so that by the time he arrives home hot water is available readily for a bath.
    The software program at the remote PC (server PC) issue the controlling signals to the serial port depending on the control signal sent through the Internet by the operator (client PC). Serial stream is converted to parallel form using the interfacing circuit. This interfacing circuit drives the appliance switching circuit which switches the electrical appliance. The sensing circuit at the electrical appliance detects the state of the appliance and a feedback signal is given to the interfacing circuit. This is sent to the operator by the reversal process and indicated in the GUI at the client PC.
  8. pdf downloadSimulation of lightning performance of medium voltage distribution lines
    Project Group: P.K.W. Abeygunawardana, A.M.H.S. Abeykoon, B. Balamurali, E. Premaruban.
    Supervisor: Mr. Dammika Nanayakkara, Professor J. R. Lucas
    Measurement of lightning performance of a distribution line is a dominant factor in designing the distribution line. Behaviour of a distribution line due to the lightning is dependent on many factors namely, Basic Insulation Level (BIL), ground flash density or keraunic level of the terrain, shielding factor and magnitude of lightning current.
    The scope of this project was to implement a “Lightning Analyzer” software to enable the line design Engineers to calculate the required parameters for designing purposes.
  9. pdf downloadEnergy analysis of a micro hydro station in Sri Lanka
    Project Group: K.I.A.P. Rajakaruna, V.M. Dhanapala, Miss J Ramanathapillai, Miss L.N.W. Arachchige
    Supervisor: Dr. Priyantha D.C. Wijayatunga & Dr. Rahula Attalage
    Energy analysis of the Micro Hydro is taken into account at four different levels. The sensitivity of the energy analysis can be done using a computer software package. The main factors influencing sensitivity are life span, distance involved and the capacity of the Micro Hydro. In this project the basis of calculating the embedded energy is Tonnes of oil equivalent (TOE). Here Energy gain ratio is calculated using output to input usable energy of the Micro Hydro. Several assumptions were made in order to make it applicable to a typical Micro Hydro plant in Sri Lanka and by doing so we can determine the significance of each factor influencing energy efficiency of a Micro Hydro.
  10. pdf downloadElectronic Governor & Control System For Mini-Hydro Power Plants
    Project Group: D.C.Abeysundara, K.D.C.N.Karawita, D.M.A.P.Dissanayaka, S.T.Bulathgama
    Supervisor: Dr.D.P.N.Nanayakkara
    The governor of a grid connected mini-hydro power plant first builds the generator frequency up to the grid frequency. It also controls the output power utilizing the available water supply to the turbine. This entire operation is achieved by controlling the gate valves of the turbine. Almost all the turbine units use this method of control and it comprises of a mechanical actuator and electrical control device to give the desired command signals to the actuator to open or close valves appropriately.
    The main intention of this project is to design a PC based controller accessing that point of control mentioned earlier, plus the protection system of the power plant.
  11. pdf downloadElectricity Generation Planning Using Exergy Analysis
    Project Group: K.K.W.Siriwardena, I.M.Weeraratna, S.A.S.D.Wijeratna, R.M.S.D.Wijesinghe
    Supervisor: Dr.P.D.C.Wijayatunga & Dr.R.A.Attalage
    Although the current planning procedures consider technical aspects of different candidate plants, it is limited to its capacity, whether it can be used for peaking or not and type of fuel used. Thus the cost minimization approach does not consider the actual exergy utilization of different technologies. Exergy gives an absolute usefulness of some energy.
    So it is a better unit to assess a technology (exergy efficiency). The main objective of the project is to get the generation expansion plan based on exergeoconomic analysis to check whether the plan obtained reduces the emissions to the environment and whether a cost increment is coupled with it.
  12. pdf downloadShort Term Load Forecasting Using Artificial Intelligence Techniques
    Project Group: V.Kumarathasan A.Sivabala L.Perera A.Aravinthan
    Supervisor: Dr. H. Jahan C. Peiris Dr. Priantha D.C Wijayatunga.
    The primary objective of our project was to use artificial intelligence for forecasting the following half an hour Electricity power load in Sri Lanka using Neural Network and Fuzzy Logic and to evaluate their relative performance. We have also provided a user interface to For predicting the following half an hour we have used historical data of Electricity Power load. We are using the current data to predict the following half hour load. In implementing our system we used Matlab 5.3 to implement both the Artificial Neural Network and Fuzzy Logic and for building GUI we used Matlab 5.3.

BSc Eng Final Year 1999/2000

  1. Electronic Load Controller for Induction Generator
    Supervisors: Dr A Ranaweera, Dr P Wijayatunga
  2. Development of linearised models and design of damping controllers for power systems
    Supervisors: Dr Jahan Peiris, Prof Rohan Lucas
  3. IGBT inverter for three phase a.c. induction motor control
    Supervisors: Dr J P Karunadasa
  4. Design and implementation of micro hydro power plant
    Supervisors: Dr N Nanayakkara
  5. Electronic Wattmeter
    Supervisors: Dr A Ranaweera
  6. Electric field pattern of a three-core cable
    Supervisors: Prof J R Lucas
  7. Development of a fuzzy logic controller component for emtdc and use of fuzzy logic control to improve damping of power system oscillations
    Supervisors: Dr Jahan Peiris, Prof Rohan Lucas
  8. Strategies to improve the utilisation factor of a stand alone micro hydro project
    Supervisors: Dr Ranjit Perera
  9. Study of the probable variation of fault levels of the Sri Lankan grid system, according to the system conditions
    Supervisors: Dr N Wickramarachchi, Mr Rienzie Fernando (CEB)
  10. Programmable two rate energy meter
    Supervisors: Dr A Ranaweera

BSc Eng Final Year 1998/1999

  1. Evaluation of cost of energy not served in Sri Lanka
    Group: HPIP Nandasena, JC Nananyakkara, PS Liyanaarachchi, NTG Punchihewa
    Supervisor: Dr P D C Wijayatunga
    This paper presents the results of an investigation of direct short term impacts and cost incurred by electrical consumers resulting from power curtailments. Quantitative reliability evaluation is an important aspect of power system planning and operation. The indices produced in these applications are utilized in a wide range of management decisions throughout a utility. One issue which is often debated is the cost associated with a particular level of reliability. In order to make this argument complete, it is necessary to also thoroughly examine the worth or benefit associated with a particular level of reliability. Estimates of the impacts of interruptions in service can be obtained by assessing the losses incurred by different customer types and categories. These data can then be used to calculate cost of energy not served in the selected utility service area.
  2. Design of Microwave Tea Dryer
    Group: M.S.E Jayatillake, CD Kumarasinghe, UNK Udugampola, RBL Unantenne.
    Supervisor: Dr. Lalith Gamage.
    Tea industry being one of the major agricultural industries in the national economy provides a massive number of employment opportunities and resource of foreign exchange. Since this is heavily energy intensive and depends on fire wood supplies it faces problems with increasing difficulties of finding enough firewood. This has resulted in increase of unit production cost.
    Microwave energy being a clean and easily controllable energy supply has a great potential in substituting firewood in tea drying.
    Designing a microwave dryer consists of designing a resonant cavity with matching impedance and studying the field and temperature distributions inside the cavity, which depend on lot of other parameters.
    The ideal dryer should be an optimized and leakage minimized instrument. A model design with a matched cavity and a magnetron, which employs a continuous conveyer mechanism, can be used to study the operation of a dryer.
  3. Implementing An Electronic Device To Detect Red Palm Weevil Larvae.
    Group: CMS. Goonathilake, W.D.M.Prasanna, I.K.Weerasekera, T.K.L. Sandagomi
    Supervisor: Dr. D.P.N. Nanayakkara
    This project was carried out to develop an electronic device to detect Red Palm Weevil Larvae which causes afatal damage to the coconut plantation in Sri Lanka. In order to grab the crunching sound of the Larvae we had to select a suitable transducer. Afterwards the extracted sound were analyzed in several methods and designed a filter to detect the weevil. During these steps consideration has been focused heavily on the methods of eliminating environmental noise.
  4. Design And Implementation of A Lightning Protective Device for Low Voltage Systems
    Group: A.K.P.Viraj, D.S.Wickramanayake, J.H.P.U.K.Jayalath, K.Wijasiriwardena
    Supervisors: Prof J.R.Lucas, Dr. A. Ranaweera, Dr. N. Wickramarachi.
    This project is carried out for designing & implementation of a low cost lightning protective device for low voltage systems. A study on specifications and location categories (the place where the protector is to be located) of lightning protectors is the first step. An analysis of the components required ( MOVs, transient voltage suppresser diodes etc.) in designing is the next step. The design consists of two main circuits. They are voltage limiting circuit and frequency discriminating circuit. The necessity of the frequency discriminating circuit (filter) arises due to the sharp edge created by clipping of incoming induced surge by the voltage limiting circuit. Several tests are performed on the implemented circuit to ensure the performance.
  5. Wind Speed Analysis for Modelling of a Wind Turbine
    Group: A.D.D. De Silva, D.R. Dhammika, A.R. De Silva, I.T. Asuramanna
    Supervisor : Dr. D.P.N Nanayakkara
    This project is carried out to investigate the feasibility of modeling the wind turbine according to wind speed data. As the first step the calculation of Aerodynamic Torque Tk was done. Then using the developed transfer function between the aerodynamic torque and Shaft torque (Ts). Using the existing original model the stability of Ts was checked and it was not up to standard. Then new set of values were obtained using MATLAB programming. As the second step Modeling a wind turbine with respect to the wind site specifications. Here sustainability of the wind turbine according to wind speed changes is considered Wind As the further development Carrying out a load flow analysis in order to obtain voltage at each bus bar for a particular power network, according to the power given by the wind speed data. Here steady state induction generator model was used to obtain the voltage output. Infrastructure for programming part was obtained by employing MATLAB programming.
  6. Design of a Single Phase 12V/230V Sinusoidal Inverter
    Group: D.M.N. Bandara, W.S.N. Gunawardana, J.D.C. Jayaweera, U. D. Liyanapathirana.
    Supervisor: J P Karunadasa
    The process of inversion is, of course, by no means recent and has been practiced ever since a need existed to derive an a. c. supply from a d. c. source. However owing to progress in semiconductors, technological development such as space flight and direct energy conversion, also the increase in applications necessitating operation of apparatus away from main supplies, the demand for inverters is an ever increasing one.
  7. Calculation of Energy Conservation Potential in Motor Drives in the Industry of Sri, Lanka
    Group: H.D.Chaminda, P.S.D.Dabere, UN.Dahanayake, G.J Susantha
    Supervisor: Dr.Priyantha Wijayathunge
    This project is carried out to estimate the energy saving potential of the motor drives used in the industry of the Sri Lanka. This project involves a survey of a sample of industries in each industrial category inorder to investigate the existing operational conditions of motor drives and possibility of replacing them with more efficient motors. We have visited the selected factories to collect information such as nameplate data on all electrical motors. number of machine hours and power consumption figures over the fast six months. In addition to our main objective, the sample details have been used to evaluate percentage motor energy usage in the industry and in the each industrial category, motor population in the industry and percentage energy consumption in motors.
  8. Automatic Synchronous scope Based on a Microproccessor
    Group: P.C. Palayangoda, C. T. Hewamana, V.S.D. Rodrigo, K.S.P. Perera
    Supervisor: Dr Surneda Rajakaruna
    Designing of an automatic digital synchronous scope is in demanding condition as with the privatization of the generating sector there will be more small and medium scale power plants than today. The synchronizing process involves measuring & matching of voltage, frequency, and phase sequence & phase angle of the two systems. When the future trends of developing low cost, reliable & high speed microprocessors are concern it is worthwhile of developing a method of synchronizing a generator with the system based on a microprocessor. This model based on a microprocessor and a Data Acquisition Card provides a complete, Reliable and accurate method of synchronizing.
  9. Graphical User Interface (GUI) for Load Flow Analysis
    Group: Babujee.S, Capilan.R, Prabahar.A, S.Seetharam
    Supervisors: by Professor.J.R.Lucas and Dr.Priyantha D.C Wijetunge
    A Software package, "Graphical User Interface for Load Flow Analysis" was developed in Visual Basic. AS most of the events are performed using Mouse it is easy for the user to carry out the analysis. Standard DC load flow/ Modified DC load flow techniques are presently used for the calculations. Existing systems can be saved. They can be retrieved and modified at a later time
  10. Simulation Of dc dc Converters
    Group: G.Rajkumar, N.Thiruvarul, T.Pakirathan and A.M.A.Nazeer
    Supervisor: Dr.J.P.Karunadasa
    Even though, there are number of tailor made power electronic software packages being available in the market we were urged to develop our own software due to economical consideration and because of the fact that since these tailor made packages cover a wide area they are not suitable for certain specific application. On the other hand our package will take a detailed analyze on DC DC converters. Simulations are used to calculate the circuit waveforms, the dynamic and steady state performance of systems and the voltage and current ratings of various components.
  11. Electronic Load Controller for an Isolated Induction Generator
    Group: T.Suresh Kumar, A K P.MahesirAtapattu, K.R.S.P.Hemachandra, H.PRKRupasinghe.
    Supervisor: Dr RMAS Rajakaruna
    Micro hydro is a valuable source of energy for rural industries and electrification schemes. Induction Generators are widely used in micro hydrous, but in maintaining the quality of the power is the main difficulty due to the ever changing nature of the consumer's load.
    The main objective of this project is to design and construct an Electronic Load Controller (ELC) thereby to design a half controlled converter followed by a chopper which can be controlled in order to control both active and reactive power by varying delay angle (a) and the ballast load power. An 1GBT is used as a switching device to control the power level of the ballast load.
  12. Study of Capacity Cost Avoided by an Electric Utility through Purchase of Power from Micro / Mini Hydro Electric Plants
    Group: S.A.G.D. Fernando, S.S.A. Fernando, G.IN. Fernando, N.P. Hettiwatte
    Supervisor: Mrs. A. Abeygunawardena
    The purpose of our project was to study the saving of capital expenditure to the CEB when purchasing power from independent power producers (IPP). Of the three available methods we selected the LRDRR method for this. Using the WASP simulation package, we arrived at some surprising results. We found the results to be extremely sensitive to the discounting factor. The final results we obtained were not conclusive enough to unambiguously conclude a rate, which could be paid to the IPPs in recognition of the capacity cost saving. However our results can be used as a basis for the calculation of such a rate.

BSc Engineering Course, First Year Projects 2003, 2002, 2001

Level 1 projects help to develop (among other skills) teamwork, innovation, choice of materials, survey skills, pricing and marketing skills and manufacture through a simple design. The creative engineering design process is brought out in students by participation in small design groups. Each group isolates a significant engineering problem and then proceeds to demonstrate feasibility through the actual construction of a prototype. The basic tools (workshop, drawing, AUTOCAD, PSpice etc) are taught mainly through the implementation process of the prototype.

BSc Eng First Year 2003

  1. Low Voltage Fluorescent Lamp
    Aim: To design and construct an economical fluorescent lamp operating from a motor cycle battery supply for mass production (100 units per month)
    Project Group
    1. Jayasekara AGDP
    2. Jeevantha PMC
    3. Jayendra RG
    4. Karunananda HSC
    5. Peiris VGS
    6. Peiris BCM
    7. Perera LPRS
    8. Piyasinghe LP
    9. Rajapaksha NO
    Supervisors: Prof J R Lucas, Mr P K E Harinath
  2. Water Level Detector
    Aim: To design and construct an automatic detector for the water level in a tank and make the information available at another location (production target 100 units/month)
    Project Group
    1. Abeywickreme S
    2. Amaraarachchi KE
    3. Amarasinghe HAP
    4. Indrajith MKDN
    5. Meegahapola LG
    6. Peiris RL
    7. Ranasinghe KKR
    8. Thilakarathna AHC
    9. Wijayakantha HDI
    Supervisors: Prof J R Lucas, Mr J M C A Weerasekera
  3. Illuminance Controller
    Aim: To design and construct a controller for maintaining a given illumination level at a specific surface for variating ambient lighting conditions
    Project Group
    1. Amarasinghe ND
    2. Amaratunga DS
    3. Dharmapriya TDK
    4. Dharmapriya PP
    5. Dewasurendra AP
    6. Neelawala L
    7. Perera SRC
    8. Prasanga MWB
    Supervisors: Prof J R Lucas, Mr J M C A Weerasekera
  4. Hair Dryer
    Aim: To design and construct an economical hair dryer to dry hair at a safe temperature in the home
    Project Group
    1. Sandasiri DDKG
    2. Somapriya GHU
    3. Subasinghe SAAM
    4. Subasinghe SCA
    5. Thanthrigoda SI
    6. Tharanga SAD
    7. Thathrimudalige RMD
    8. Wijeratne DS
    Supervisors: Prof J R Lucas, Mr A M C J Angammana
  5. Coffee Maker
    Aim: To design and construct a economic device to automatically produce coffee at a preset time to be used in the home
    Project Group
    1. De Coonghe DCS
    2. De Silva AC
    3. De Silva EL
    4. Galgomuwa GVAG
    5. Gunathilaka KAL
    6. Jayathilaka GAMSP
    7. Kumara GA
    8. Weerasekara NSP
    Supervisors: Prof J R Lucas, Mr P K E Harinath
  6. Smoke Detector
    Aim: To design and construct an automatic smoke detector and give an audible alarm
    Project Group
    1. Ahamed MHF
    2. Emalayan V
    3. Mathuran M
    4. Ranasinghe HJA
    5. Rathnayake RMPB
    6. Sagara WPS
    7. Senadhipathi SMJB
    8. Thillainathan J
    Supervisors: Prof J R Lucas, Mr A M C J Angammana

BSc Eng First Year 2002

  1. Bed-Side LED Lamp
    The Brief: To make a Bed-Side Lamp Using High-Intensity LEDs
    (a) To be able to read books in bed using a High-Intensity LED Lamp
    (b) It should not cost more than Rs 500/= to produce
    (d) Production target to be about 200 units per month
    (e) Production budget to be limited to Rs 1000/=.
    Group Members
    1. Abeyrathna APP
    2. Achintha WGA
    3. Amarakoon EU
    4. Bulatahsinhala UI
    5. Chanaka M
    6. Chandrika WM
    7. De Silva KAAR
    8. Deneskumar T
    9. Dharmasena PVJ
    10. Ganakesavan T
    Supervisor: Prof J R Lucas
  2. Hand Operated PCB Drill
    The Brief: To drill PCBs using a hand operated drill
    (a) It should be able to drill normal thickness PCBs.
    (b) It should not cost more than Rs 1000/= to produce
    (c) Production target to be about 10 units per month
    (d) Production budget to be limited to Rs 2000/=.
    Group Members
    1. Gunawardhana TCDA
    2. Herath PAPM
    3. Jayawardanae RSL
    4. Karunaratna DNW
    5. Kothalawala TR
    6. Lekamwasam NLNN
    7. Liyanage M
    8. Liyanage MK
    9. Mahakumarage ACT
    10. Mendis NNR
    Supervisor: Prof J R Lucas
  3. Bed-Side LED Lamp
    The Brief: To make a Bed-Side Lamp Using High-Intensity LEDs
    (a) To be able to read books in bed using a High-Intensity LED Lamp
    (b) It should not cost more than Rs 500/= to produce
    (d) Production target to be about 200 units per month
    (e) Production budget to be limited to Rs 1000/=.
    Group Members
    1. Nagodavithana RD
    2. Nanayakkara OMKK
    3. Nandakumaran M
    4. Niroshan HP
    5. Parakramasinghe ADK
    6. Paulas SJ
    7. Peliarachchi PAAK
    8. Perera MDTE
    9. Prasad WD
    10. Pubuduni GGA
    Supervisor: Prof J R Lucas
  4. Alternating Current Voltage/Current Indicator
    The Brief: To display voltage and current levels using LEDs for use in the home
    (a) It should be able to display several levels of voltages around 230 V
    (b) It should be able to display several levels of currents
    (c) It should not cost more than Rs 500/= to produce
    (d) Production target to be about 200 units per month
    (e) Production budget to be limited to Rs 1000/=.
    Group Members
    1. Puhulwella PHKH
    2. Rathnasooriya PD
    3. Rodrigo PCU
    4. Roshan KKR
    5. Shyamal KGAI
    6. Subaginy N
    7. Tilakaratna GDCP
    8. Vithiya V
    9. Weerasinghe WMRS
    10. Wickramasinghe SWADN
    11. Weththasinghe TN
    Supervisor: Prof J R Lucas
  5. Conveyor for an Assembly Line
    The Brief: To convey goods from one location to another in an assembly
    (a) It should be able to convey goods between locations around 500 mm.
    (b) It should not cost more than Rs 1000/= to produce
    (c) Production target to be about 10 units per month
    (d) Production budget to be limited to Rs 2000/=.
    Group Members
    1. Wijayawardhana NABR
    2. Wijesinghe AS
    3. Wijesinghe KC
    4. Wijesundara MSB
    5. Wijeweera CD
    6. Wimalasiri AGP
    7. Yatiyana EMMB
    8. Perera BMSJ
    9. Senanayake GP
    10. Silva AMN
    Supervisor: Prof J R Lucas

BSc Eng First Year 2001

  1. Design Project: Grass Cutter
    The Brief: To cut grass in a small lawn at low cost.
    (a) It should be able to cut normal grass grown in a front lawn in a city dwelling.
    (b) It should not cost more than Rs 1000/= to produce
    (c) Production target to be about 100 units per month
    (d) Production budget to be limited to Rs 2000/=.
    Group Members
    1. Abeyruwan SW
    2. Ameer MIS
    3. Amila PDG
    4. Asanka LPG
    5. Boteju GNH
    6. Chandrasekara BLRN
    7. Colombage DMH
    8. De Silva MHRH
    9. De Silva TYN
    10. Disanayake I
    Supervisor: Prof J R Lucas
  2. Design Project: Battery Charger
    The Brief: To charge a lead acid battery
    (a) It should be able to charge 45 Ah capacity lead acid car battery
    (b) It should not cost more than Rs 2000/= to produce
    (c) Production target to be about 100 units per month
    (d) Production budget to be limited to Rs 3500/=.
    Group Members
    1. Ediriweera SH
    2. Fernando LAS
    3. Fernando MCA
    4. Gunaratne KGCB
    5. Gunawardhana HADNP
    6. Hendalage DST
    7. Hettiarachchi IT
    8. Imbulana KAVA
    9. Indatissa AS
    10. Indrasiri GHPM
    Supervisor: Prof J R Lucas
  3. Design Project: Battery Charger
    The Brief: To charge a lead acid battery
    (a) It should be able to charge 45 Ah capacity lead acid car battery
    (b) It should not cost more than Rs 2000/= to produce
    (c) Production target to be about 100 units per month
    (d) Production budget to be limited to Rs 3500/=.
    Group Members
    1. Jayawardena SRMP
    2. Malaviarachchi KAMKGA
    3. Manatunga MMAS
    4. Masinghe WD
    5. Peiris LR
    6. Perera LAAN
    7. Perera MKPSC
    8. Perera UDF
    9. Piyathilaka JMLC
    10. Lloyd CP
    Supervisor: Prof J R Lucas
  4. Design Project: Digital Voltmeter
    The Brief: To display digitally a voltage to be measured
    (a) It should be able to display voltages in the range 0 - 15 V d.c.
    (b) It should be able to display two digits after the decimal point.
    (c) It should not cost more than Rs 1500/= to produce
    (d) Production target to be about 100 units per month
    (e) Production budget to be limited to Rs 2500/=.
    Group Members
    1. Prasanna DP
    2. Prasanna LC
    3. Sandagiri CA
    4. Siriwardana KAP
    5. Sivasatheesan S
    6. Soysa WHID
    7. Suduge UP
    8. Talbad PR
    9. Tantirimudalige SJD
    10. Tharanga SHN
    Supervisor: Prof J R Lucas
  5. Design Project: Digital Voltmeter
    The Brief: To display digitally a voltage to be measured
    (a) It should be able to display voltages in the range 0 - 15 V d.c.
    (b) It should be able to display two digits after the decimal point.
    (c) It should not cost more than Rs 1500/= to produce
    (d) Production target to be about 100 units per month
    (e) Production budget to be limited to Rs 2500/=.
    Group Members
    1. Thotagamuwage SSK
    2. Upendra GAA
    3. Uthayashanger S
    4. Vitharana UB
    5. Wijekoon MFA
    6. Wijesinghe WTP
    7. Wimalaratne MHD
    8. Wimalasena NKRP
    9. Yaheya GF
    Supervisor: Prof J R Lucas

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