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Analysis of Impedance Matching Technique for Novel Supercapacitor Assisted PV Systems

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dc.contributor.author Piyumal, P.L.A.K.
dc.contributor.author Ranaweera, A.L.A.K.
dc.contributor.author Kalingamudali, S.R.D.
dc.contributor.author Kularatna, N.
dc.date.accessioned 2020-12-24T05:19:17Z
dc.date.available 2020-12-24T05:19:17Z
dc.date.issued 2020-10
dc.identifier.citation Piyumal, P. L. A. K., Ranaweera, A. L. A. K., Kalingamudali, S. R. D., & Kularatna, N. (2020). Analysis of impedance matching technique for novel supercapacitor assisted PV systems. Paper presented at the IECON Proceedings (Industrial Electronics Conference), , 2020-October 1756-1761. doi:10.1109/IECON43393.2020.9254315 Retrieved from www.scopus.com en_US
dc.identifier.uri http://repository.kln.ac.lk/handle/123456789/21725
dc.description ISBN: 978-172815414-5 CODEN: IEPRE Source Type: Conference Proceeding Original language: English DOI: 10.1109/IECON43393.2020.9254315 Document Type: Conference Paper en_US
dc.description.abstract To extract the maximum power from a photovoltaic (PV) system, the maximum power point (MPP) of the PV array must be tracked continuously. A directly coupled load with the PV array does not track the MPP of the PV array because the load has a constant resistive value. Therefore, to track the MPP of the PV array, a technique called impedance matching is used. This is done by continuously matching the load impedance to the instantaneous impedance of the PV array. Switch mode DC-DC converters are widely used for this purpose which also helps to interface the DC output of the PV array with power distribution systems in order to deliver the power to the consumer end. However, the efficiency of these converters lies around 90% which degrade the end to end efficiency of the PV system. In this context, novel supercapacitor (SC) assisted PV systems have been introduced, which were able to enhance the end to end efficiency of PV systems. However, existing impedance matching technique is no longer valid for SC assisted PV systems. Therefore, still it is a challenge for these systems to track MPP of the PV array continuously while in operation. This paper presents a study on impedance matching technique for the novel SC assisted PV systems. Previously, it has been experimentally shown that a series connected SC bank between PV array and DC-DC buck converter of a PV system could deliver higher end to end efficiency than typical systems. This study validates the impedance matching technique for SC assisted PV systems by connecting a SC bank in series with buck, boost, and buck-boost converters. Simulation results indicate that this can be achieved by carefully designing the system with given parameters. © 2020 IEEE. https://ieeexplore.ieee.org/document/9254315 en_US
dc.description.sponsorship IEEE Industrial Electronics Society (IES),SPECS - Smart Grid + Power Electronics Consortium Singapore,The Institute of Electrical and Electronics Engineers (IEEE) en_US
dc.publisher IEEE Computer Society en_US
dc.subject DC-DC converter, Impedance matching, PV system, Supercapacitor en_US
dc.title Analysis of Impedance Matching Technique for Novel Supercapacitor Assisted PV Systems en_US


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