Current research areas
- Impact on power-quality due to operation of grid connected large solar power plants
- Synchronous Condenser mode operation of Gas-Turbine Generators using a Starter Motor
- Guidance for Electromechanical Designs of New Pumping Station in National Water Supply and Drainage Board
- Comparative evaluation of form wound stator insulation methodologies prior and after Rehabilitation of Old Laxapana
- Impact of Harmonics in the Utility Power Distribution System and End Users in Sri Lanka and suitability of Introducing of Harmonic Standards in Sri Lanka
- Improving of Stability of Wind Integrated Power System with Pump Storage Power Plants
- Reactive Power Compensation in Distribution Division 3 through Medium Voltage Capacitor Banks and Development of a Reactive Energy Tariff
- Benefits and challenges of the implementation of proposed Energy Labeling Standards for induction motors
- Electrical Power generation using existing irrigation tank in Sri Lanka
- Simulation of multilevel inverters in solar energy application with maximum power point tracking technique
- Piezoelectric Energy Harvesting
- Effects on generator performance due to winding irregularities
- Dynamic voltage regulation in distribution systems
- System restoration options following a blackout
Postgraduate projects (taught course) supervised and graduated (as at April 2014)
- Development opportunities in power electronic applications in Sri Lankan industries – by Mr. BNN Abeysiri, 2012
- Leakage inductance calculation of torroidal transformers using finite element analysis – by Mr. NS Dodampegamage, 2012
- Possibility and proposal to redesign puttalum coal power station phase II, by Mr. TN Walpita
- Detection of partial discharges on the online hydrogenerator stator winding – by Mr. PAP Dharmapriya, 2012
- Analysis and filtering of power line noise interferences to data and voice signals in commercial building – by Mr. KPA Weerasinghe, 2012
- Investigation of torroidal inductors based on non-grain oriented silicon stee: Comparative study – by Mr. HK Ekanayake, 2012
- Tea factory fire risk management – by Mr. RH Abewickrama, 2012
- Development of a grid connected solar photovoltaic System – by Mr. KS Asanga, 2011
- Impact of internal and external factors in building energy consumption in Sri Lanka- by Mr. HRD Perera, 2011
- Proposal for providing for portable water requiremens of employee’s housing complex of Puttalam coal power project – by Mr. ABMT Abeykoon, 2011
- Development of hybrid power system controllerfor mobile telecom base stations – by Mr. MH Liyanage, 2011
- Development of an intelligent outage management system to improve the reliability of electricity distribution network- by Mr. CAA Gunawardhana, 2011
- Voltage stability analysis of a grid connected wind farm – by Mr. RD Nagodavithana, 2011
- Technical and financial requirements for implementation of remote metering- by Mr. LC Prasanna, 2011
- Design of a controllable resistor load bank – by Mr. PHKH Puhulwella, 2011
- Remote control humless fan controller unit – by Mr. MDAK Wijerathna, 2011
- Analyzing the maximum wind power penetration level around Kalpitiya peninsula – by Miss TR Kothalawala, 2010
- Study of different types of earthing in electrical installations – by Mr. JJ Jayasinghe, 2010
- Design of control philosophy between transformer AVR control and BSC bank power factor control –by Mr. DGS Kumara, 2010
- Fault diagnosis by vibration analysis of synchronous generators – by Mr. SH Ediriweeera, 2010
- Power electronic starter for wound rotor induction motors – by Mr. WHID Soysa, 2010
- A mechanism to reduce waste due to voltage dips in narrow fabric looms – by Mr. HKL Gamini, 2010
- An AC drive system to replace an existing DC drive system – by Mr. MRRT Niroshana, 2010
- Optimizing the use of breaker switched capacitors in CEB system – by Mr. D.D.U. Dompege, 2009
- Development of high performance automatic voltage stabilizer for telecommunication applications – by Mr. S.S.K. Thotagamuwage, 2009
- Active current shaping for better utility interface – by Mr. M.H.C. Perera, 2009
- Study of optimum location for capacitors installation in a 220/132/33 kV grid substation – by Ms. W.M.S. Deepika Wijesinghe, 2009
- Viability of fixed type power capacitors for loss reduction in low voltage (400 V) distribution networks of power utilities – by Mr. Chandana Warnakulasuriya, 2009
- Embedded generation impacts to medium voltage distribution network and mitigation techniques – by Mr. B.A.P.T.K. Perera, 2009
- Mitigation of short and long term voltage variations by distribution static compensator – by Mr. D.U. Jayasooriya, 2009
- Development of a speed stabilizer for rapid synchronization of mini-hydro generator – by Mr. D.G. Subasinghe, 2009
- Fault Localization using wavelet transforms in electric power networks – by Ms. J.V.U.P. Jayatunga, 2009
- Detection and diagnosis of stator inter turn short circuit fault of an induction machine – by Mr. J.A.D.S. Ranjan, 2007
- 110V universal battery charging panel using PIC microcontroller – by Mr. S.K. Vijithananda, 2006
- Design of low cost variable speed drive for air blower motor – by Mr. N.T. Athapattu, 2006
- Conductor losses due to non-linear loads – by Mr. M.L.D.D. Darshana, 2006
- Design and implement of intelligent variable frequency drive – by Ms. W.C.C. Sumathiratna, 2005
- GSM based remote monitoring – by Ms. J.K. Kanthi, 2005
- Selection of Induction Motors for petroleum product pumps and its economics – by Mr. P.P.C. Dissanayake, 2004
- Study of the influence of the manufacturing process on the magnetic behaviour in toroidal transformers – by Mr. H.P.I.P. Nandasena, 2004
- Improvement of an existing drive circuit for a permanent magnet DC-motor – by Mr. R.R.D.S. Siyambalapitiya, 2004
- Design of power electronic inverter for active power redistribution in an unbalanced three phase system – by Ms. M.T.K. De Silva, 2004
- Analysis of voltage surges in grid substation auxiliary supply – by Mr. J.D.K.G Hemaratne, 2004
- Condition Monitoring for Preventive maintenance of large induction motors – by Mr. W.K.L Prasad, 2004
- Investigation of parameters of a stand-alone power generating system, using an induction machine in single-phase generator mode - by Ms. N.G.D. Wijesiriwardana, 2003
- Detection of branch failures in the rotating rectifier of a brushless excitation system – by Mr. J.B.A. Nishantha, 2001
Postgraduate researches Degrees supervised and graduated (as at April 2014)
- Parameter optimization of multi wall carbon nano tube production (MWCNT) using Sri Lankan graphite electric arc discharge method, MPhil Degree by Mr. RMSJ Gunasekera, completed in 2012 (Co-supervisors: Prof. AAP De Alwis, Dr. Lilantha Samaranayake)
- Remote Meter Reading over Power Distribution Lines, MPhil Degree by Ms. K. Gamage, completed in 2002. (Co-supervisor: Prof Dileeka Dias and Dr. A. Ranaweera)
Undergraduate projects supervised (as at April 2014)
- Active harmonic current filter for single phase applications, 2013
- Intelligent smart power strip for household equipments, 2012
- Design and construction of a computer controlled 4-quadrant dc servo drive, 2011
- Harmonic current compensator, 2010
- Synchronizing and protection relay for distributed generators, 2010
- High performance DC power supply using resonant mode switching, 2009
- Scaled down model of high pulse thyristor converter for HVDC applications, 2009
- Flexible fast switching block for rapid prototyping of power converters, 2009
- Third harmonic power filter for domestic AC supply, 2009
- Design and implementation of 36-pulse voltage source converter, 2009
- Electronically controlled circuit breaker, 2008
- Design of automatic voltage regulator and frequency governor for a synchronous generator, 2008
- Design and construction of a 5 kW IGBT inverter with full functionality, 2007
- Active current harmonic filter, 2007
- High performance uninterruptible power supply, 2006
- Multi purpose odor detector, 2006
- High performance fan regulator, 2006
- Low cost variable speed drive, 2006
- Designing and manufacturing of low cost high efficiency automatic water heating system for commercial applications, 2005
- Software controlled multimode three phase inverter, 2005
- Power system protection study for a wind power plant, 2003
- Multipurpose waveform analyzer, 2003
- Implementation of a Switch mode power supply, 2003
- Substation control and monitoring system, 2002
- Three-phase pre-paid digital energy meter, 2002
- Power line based intercom, 2002
- Computer controlled DC motor drive, 2002
- Software controlled multimode single phase inverter, 2002
- Development of mechanical and electrical forms of rotating magnetic field for exhibition purposes, 2001
- Conversion of a DC motor for servo applications, 2001
- Power line carrier communication system, 2001
- PC based speed controlling of a DC motor, 2000
- Switch mode variable DC power supply with output voltage regulation, 2000
- IGBT inverter for three phase AC induction motor control, 1999
- Simulation of DC-DC converters, 1998
- Design of a single phase 12V/230V sinusoidal inverter, 1998
Books authored/co-authored
- Introduction to Electrical Machines -TED 1302-Block 01& Block 02, Open University Text Book (152 pages)
(Authored Units 1 to7 out of 1 to 9) - AC Rotation Machines -TED 1302-Block 03, Open University Text Book (105 pages) (Authored Units 10 to 17 out of 10 to 19)
- DC Machines- TED 1302-Block 04, Open University Text Book (65 pages)
(Authored all Units 20 to 27) - Classification and selection of electrical machines- TED 1302-Block 05, Open University Text Book (56 pages)
(Authored Units 28A, 28C and 31 out of 28 to 31) - Torque ripple minimization of a brushless DC motor, MSc Thesis, UMIST (UK), 1989
- Analysis and enhanced control of a brushless DC motor, PhD Thesis, UMIST (UK), 1991
Research publications
- Karunadasa J.P., Rathnayake T.S., Rukshan K.T., Rupasinghe R.A.T.J.K., Ruwanthika R.M.M., “Design and Simulation of Single Phase Active Current Harmonic Filter”, International Conference on Circuits, Power and Computing Technologies(ICCPCT), India, April 2014, pp978 - 983
- Karunadasa J.P., Jayasinghe R., Edirisinghe D.S.P., Fernando S.K.A., Fonseka P.I.V., Fonseka W.A.U.C.M., “Design and Construction of an Intelligent Power Socket to Reduce the Energy Wastage due to Standby Power”, IET-YP Sri Lanka Conference, Sri Lanka, June 2013, pp 45 - 48
- Karunadasa J.P., Kothalawala T.R.,”Analyzing the maximum wind power penetration level around Kalpitiya peninsula”, National Engineering Conference 2013, 19th ERU Symposium, Faculty of Engineering, University of Moratuwa, 2013, pp16 - 20
- Karunadasa J.P., Subasinghe D.G., “Development of a Speed Stabilizer for Rapid Synchronization of Mini-Hydro Generator”, Journal of Engineers, IESL, Sri Lanka, April 2010.
- Thotagamuwage S.S.K., Karunadasa J.P., “Development of High Performance Automation Voltage Stabilizer for Telecommunication Applications”, Journal of Engineers, IESL, Sri Lanka, Oct. 2010
- Attanayaka T.L., Bandara P.M., Bambarawana I.S., Bonukobhan N., Karunadasa J.P., “Harmonic Current Compensator”, Proceedings of the 16th Annual ERU Symposium, University of Moratuwa, Sri Lanka, Nov. 2010, pp 151-153
- Karunaratne P.U., Karunaratne R., Jayawickrama R., Lakmal S., Jayawardana A., Karunadasa J.P., Wijayapala A., “Synchronizing and Protection Relay for Distributed Generators”, Proceedings of the 16th Annual ERU Symposium, University of Moratuwa, Sri Lanka, Nov. 2010, pp 141-143
- Soyza W.H.I.D., Karunadasa J.P., “Power electronic starter for wound rotor induction motors”, 15th ERU Symposium, 2009, pp 9-10
- Perera L.B., Karunadasa J.P., Perera B.M.D., Perera K.P.S.D., Silva P.A.G.S. de,. Jayarathne M.C, “High pulse thyristor converter for HVDC Applications”, 15th ERU Symposium, 2009, pp 11-13
- Perera L.B., Karunadasa J.P., Chathuranga K.A.P., Premathilaka D.M.K.M., Ratnayake I.N.W., Senarathne K.N., “High pulse voltage source inverter for standalone renewable energy systems”, 15th ERU Symposium, 2009, pp 14-15
- Karunadasa J.P., Perera L.B., Perera B.M.D., Perera K.P.S.D., Silva P.A.G.S. De. Jayarathne M.C., “Multi level current re-injection current source thyristor converter for HVDC applications”, Proceedings, 16th annual conference, IET Sri Lanka network, Sri Lanka, 2009
- Karunadasa J.P., Perera B.A.P.T.K., “ Embedded generation impacts to medium voltage distribution network and mitigation techniques”, Proceedings, 16th annual conference, IET Sri Lanka network, Sri Lanka, 2009
- Karunadasa J.P., Warnakulasuriya Chandana, “Use of low voltage fixed power capacitors for loss reduction in power distribution networks”, Annual Transactions of Institution of Engineers, Sri Lanka, 2009, pp 17-26
- Jayatunga J.V.U.P., Silva P.S.N. De, Karunadasa J.P., “Fault localization using Wavelet Transforms in 132 kV transmission lines”, Journal of the Institution of Engineers, Sri Lanka, Volume 42, No. 04, October 2009, pp 95-104
- Karunadasa J.P., Perera L.B., Perera B.M.D., Perera K.P.S.D., Silva P.A.G.S. De,. Jayarathne M.C, “High pulse thyristor converter for HVDC applications”, Proceedings IET (YMS) Annual Technical Conference, 2009, Sri Lanka, pp 56-59
- Abeyratne M.G.A.P., Welihinda S.M., Udawatta Lanka, Karunadasa J.P., “Swing leg kinematics for the bipedal walking robot”, 15th ERU Symposium, 2009, pp 99-100
- Hewapathirana N.D., Uddawatta L., Karunadasa J.P., Nanayakkara T, `` Analysis on Four Legged Multipurpose Rope Climbing Robot” Proc. of the Fourth International Conference on Industrial and Information Systems (ICIIS), Kandy, Sri Lanka, 2009, (Published in IEEE Xplore).
- Karunadasa J.P., Edirisinghe A.J., Hasthanayake L.S., Ranawaka A.S., Shantha G.D and Suranjith A.L.D, “Electronically controlled circuit breaker”, 14th ERU Symposium, 2008, pp 82-83
- Karunadasa J.P., Kumara G.R.M.E., Paranietharan A., Vishnukanth S. and Gamachchige M.S.W., “Design of automatic voltage regulator and frequency governor for synchronous generator”, 14th ERU Symposium, 2008, pp 94-95
- Karunadasa J.P., Edirisinghe A.J., Hasthanayake L.S., Ranawaka A.S., Shantha G.D.I., Suranjith A.L.D., “Electronically controlled circuit breaker”, Annual technical conference, IET-YMS, Sri Lanka, 2008, pp 129-133
- Karunadasa J.P., Kumara G.R.M.E., Paranietharan A., Vishnukanth S., Gamachchige M.S.W., “Design of automatic voltage regulator and frequency governor for a synchronous generator”, Annual technical conference, IET-YMS, Sri Lanka, 2008, pp 121-124
- Meegahapola Lasantha, Karunadasa J.P., Sandsiri Kasun, Tharanga Damith, Jayasekara Dammika, ”Fuzzy Logic and Artificial Neural Network Approaches in Odor Detection”, IEEE proceedings of ICIA 2006, Colombo, Sri Lanka, pp 92-97
- Amarasinghe N. D., Peiris R. L., Silva E. L. De, Kumara G. K. A , Kumarawadu S., Karunadasa J.P., “Practical Design Considerations of a Low Cost Variable Speed Drive”, IEEE proceedings of ICIA 2006, Colombo, Sri Lanka, pp 355-360
- Gamage K., Ranaweera A., Karunadasa J.P., Dias D., "Remote Meter Reading over Power Distribution Lines", Proceedings, 8th annual ERU Symposium on Research for Industry 2002, Moratuwa, pp D12-D13
- Karunadasa J.P., Renfrew A.C., "Robust microprocessor control of a brushless DC motor driving variable inertia load”, Mechatronics Vol. 2, No. 4, pp 347-361, 1992, printed in Great Britain
- Karunadasa J.P., Renfrew A.C., "Design and implementation of microprocessor based sliding mode controller for brushless servomotor", IEE Proceedings-B, Vol. 138, No. 6, pp 345-363, 1991
- Karunadasa J.P., Renfrew A.C., "Simulation of a brushless dc motor control scheme with sliding mode control", Proceedings of 5th International conference on Electrical Machines and Drives, London, 11-13 September, 1991, pp 213-217
- Karunadasa J.P., Renfrew A.C., "Brushless dc motor drive system simulation", Proceedings of 25th Universities Power Engineering Conference, Aberdeen, UK, 1990, pp 97-100
- Karunadasa J.P., Renfrew A.C., "Analysis of torque production in brushless DC and AC motor drives", Proceedings of 4th International conference on Power Electronics and Variable speed drives, London, 1990, pp 451-456
- Karunadasa J.P., Renfrew A.C., "A flexible fast digital controller for brushless dc motors", Proceedings of 4th International conference on Power Electronics and Variable Speed Drives, London, 1990, pp 429-434
- Karunadasa J.P., Renfrew A.C., "Torque control in brushless servomotors", Proceedings of Mechatronics 89 conference, Lancaster, UK, 1989