Browsing by Author "Karunadasa, JP"

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  • Analyzing the maximum wind power penetration level around Kalpitiya peninsula 
    Karunadasa, JP; Kothalawala, TR [Conference-Full-text]
    This paper assesses the impact of wind integrations on the power system of Sri Lanka and analyzes the maximum wind penetration levels around Kalpitiya peninsula for the proposed years 2010, 2012, 2014 and 2016 transmission ...
  • Design of automatic voltage regulator and frequency governor for synchronous generator 
    Karunadasa, JP; Kumara, GRME; Paranietharan, A; Vishnukanth, S; Gamachchige, MSW [Conference-Abstract]
    This paper presents the development of an Automatic Voltage Regulator (AVR) and a Frequency Governor for synchronous generator for laboratory purposes. The AVR operates as a voltage stabilizer and controller because the ...
  • Develop a micro grid control platform for sustainable energy management in distribution network 
    Attanayaka, AMS; Jeewandara, JMDS; Karunadasa, JP; Hemapala, KTMU [SRC-Report]
    The Senate Research Committee (SRC) promotes research by giving funding for research. In addition to the monthly stipend payment, the allocated payments for publications, hardware purchasing, and transportation is highly ...
  • Development of multi-winding-transformer assisted diode converters for improved utility interface 
    Abhishek, VHR; Nawarathna, NMLR; De Zoysa, HSH; Karunadasa, JP [Conference-Full-text]
    This paper presents a development of multi-winding-transformer assisted converters for improved utility interface. The proposed system is 96 pulse AC-DC converter which consists of two parallel connected 24-pulse AC-DC ...
  • DQ transform based current controller for single-phase grid connected inverter 
    Jayathilaka, I; Lakpriya, L; De Alwis, D; Jayakody, G; Hemapala, KTMU; Karunadasa, JP; Lakshika, H [Conference-Full-text]
    In this paper, the design and simulation of a current controller for a grid connected inverter is implemented by using the synchronous reference frame conversion. The active power and the reactive power outputs of the ...
  • Electronically controlled circuit breaker 
    Karunadasa, JP; Edirisinghe, AJ; Hasthanayake, LS; Ranawaka, AS; Shantha, GDI; Suranjith, ALD [Conference-Abstract]
    Due to rapid increase of 3 phase motors the usage of MCCBs, contactors and overloads have also increased. The main objective of project is to design and implement a low cost Electronically Controlled Circuit Breaker (ECCB) ...
  • Hardware and control design of a novel three phase grid tie inverter system 
    Karunadasa, JP; Jayaweera, SS; Kumara, HPNN; Jayasooriya, JASH [Conference-Full-text]
    Renewable energy-based power generation has become the main focus in the energy field due to the growing concerns over the environmental effects of conventional energy systems. With the advancement in technology, the ...
  • Harmonic current compensator 
    Attanayaka, TL; Bandara, PM; Bambarawana, IS; Banukobhan, N; Karunadasa, JP [Conference-Extended-Abstract]
    This paper presents the design and implementation of a Harmonic Current Compensator. Sources of harmonics, harmonic distortion, detrimental effects of harmonics and harmonic elimination methods are considered. Paper ...
  • High performance AC-AC regenerative 5-level NPC converter with capacitor voltage balancing 
    Karunadasa, JP; Bandara, IBH; Dayananda, WDD; Kumara, KGSU; Tennakoon, GMR [Conference-Full-text]
    Regenerative AC-AC converters are required for serving AC loads that draw and return power during operation, when input is also taken from an AC source. AC motor drives, static VAR compensators, harmonic compensators ...
  • High pulse thyristor converter for HVDC applications 
    Perera, LB; Karunadasa, JP; Perera, BMD; Perera, KPSD; De Silva, PAGS; Jayarathne, MC [Conference-Extended-Abstract]
    Designing, simulation and implementation of a scaled down model of a High Pulse Thyristor ac / dc Current Source Converter (CSC) for HVDC applications based on a new concept of Multi Level Current reinjection are discussed. ...
  • High pulse voltage source inverter for standalone renewable energy systems 
    Perera, LB; Karunadasa, JP; Chathuranga, KAP; Premathilake, DMKM; Rathnayake, INW; Senarathne, KN [Conference-Extended-Abstract]
    Designing, simulation and implementation of a 3kVA, 36 pulse voltage source inverter for standalone renewable energy systems based on the new concept of multi level voltage reinjection is discussed. Introduction to the ...
  • A multi-objective optimization model for sizing an off-grid hybrid energy microgrid with optimal dispatching of a diesel generator 
    Premadasa, PND; Silva, CMMRS; Chandima, DP; Karunadasa, JP [Article-Full-text]
    The paper presents a multi-objective optimization model for sizing and operating a hybrid energy system consisting of solar photovoltaic, wind energy, diesel generator, and battery storage. A new concept of optimizing the ...
  • Nine level cascaded H bridge inverter (For High performing UPS applications) 
    Darmawardana, PDH; Kahingala, td; Karunarathna, KMCG; Kularatne, LBSN; Karunadasa, JP [Conference-Abstract]
    This paper proposes a nine level Cascaded H-Bridge Multi-Level Inverter, realized via Distortion Minimization PWM technology which is incorporated in an Uninterrupted Power Supply (UPS), operating in the low power end. The ...
  • Nine Level Cascaded H Bridge Inverter (For High Performing UPS Applications) 
    Darmawardana, PDH; Kahingala, TD; Karunarathna, KMCG; Kularatne, LBSN; Karunadasa, JP [Conference-Full-text]
    This paper proposes a nine level Cascaded H-Bridge Multi-Level Inverter, realized via Distortion Minimization PWM technology which is incorporated in an Uninterrupted Power Supply (UPS), operating in the low power end. The ...
  • Novel three phase transformer model to accommodate the effects of load injected dc 
    Karunadasa, JP; Navarathna, KGL; Abeyrathna, RVCN; Perera, KANC; Sandaruwan, KDN [Conference-Full-text]
    The level of DC current accumulated at secondary phases of the distribution transformers is significant due to the proliferation of power electronic intensive loads on the distribution system. This DC current is inherently ...
  • Optimal sizing of solar photovoltaics and battery storage for domestic prosumers using genetic algorithm 
    Premadasa, PND; Silva, CMMRS; Chandima, DP; Karunadasa, JP [Conference-Full-text]
    Recently, the number of prosumers is increasing significantly in the electrical system. Most prosumers use solar photovoltaics to generate electricity; some even use batteries to store excess energy. However, integrating ...
  • Parametric approach of designing electrical system for grid connected telco base station consisting of generator and battery bank 
    Silva, CMMRS; Premadasa, PND; Chandima, DP; Karunadasa, JP [Conference-Full-text]
    With increasing competition and diminishing returns in revenue for mobile network operators, optimization of cost invested in the development of telecommunication networks is an important topic. Recent research suggests ...
  • Potential for promotion of demand side management in Sri Lanka through a market based approach 
    Karunadasa, JP; Siyambalapitiya, T; Hemachandra, EAEH [Conference-Full-text]
    Today with the developments in technology, expansion and developments in industries, and increase in the standard of living of the society, the demand for electricity keeps rising every day. It is the responsibility of ...
  • Power electronic starter for wound rotor induction motors 
    Soysa, WHID; Karunadasa, JP [Conference-Extended-Abstract]
    This paper presents a rotor based power electronic starter for a wound rotor three phase induction motor. The study was done for a 1kW motor and the successfulness of proposed starter was evaluated using Matlab-Simulink ...
  • Remote meter reading over power distribution lines 
    Gamage, K; Ranaweera, A; Karunadasa, JP; Dias, D [Conference-Extended-Abstract]
    The paper presents the development of a simple technique for remote reading of utility meters using low voltage power distribution lines. Remotely reading electricity, gas and water meters have distinct advantages over ...