A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems

Vilathgamuwa, D. Mahinda & Jayasinghe, S.D. Gamini (2012) A three-level flying-capacitor rectifier based supercapacitor direct integration scheme for distributed generation systems. In Proceedings of the 2012 IEEE International Symposium on Industrial Electronics (ISIE), IEEE, Hangzhou, China, pp. 1566-1571.

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Supercapacitors are increasingly used as short term energy storage elements in distributed generation systems. The traditional approach in integrating them to the main system is the use of interfacing dc-dc converters which introduce additional costs and power losses. This paper therefore, presents a novel direct integration scheme for supercapacitors and thereby eliminates associated costs and power losses of interfacing converters. The idea is simply to replace ordinary capacitors of three-level flying-capacitor rectifiers with supercapacitors and operate them under variable voltage conditions. An analysis on the reduction of power losses by the proposed system is presented. Furthermore, supercapacitor sizing and implementation issues such as effects of the variable voltage operation and resistive behavior of supercapacitors at high frequencies are also discussed. Simulation results are presented to verify the efficacy of the proposed system in suppressing short term power fluctuations in wind generation system.

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ID Code: 74787
Item Type: Conference Paper
Refereed: Yes
Keywords: DC-DC power convertors, Distributed power generation, Supercapacitors, Wind power
DOI: 10.1109/ISIE.2012.6237325
ISBN: 9781467301596
ISSN: 2163-5137
Divisions: Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 IEEE
Deposited On: 07 Aug 2014 22:58
Last Modified: 22 Jun 2017 18:47

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