An Autonomous Harmonic Filtering Strategy For Distributed Energy Resources Converters In Microgrid

Tzung-Lin Lee; Chia-Tse Lee; Po-Tai Cheng

doi:10.18618/REP.2009.4.233240

Authors

Tzung-Lin Lee Dept. of Electrical Engineering, National Sun Yat-sen University, Kaohsiung, TAIWAN
Chia-Tse Lee Center for Advanced Power Technologies, Dept. of Electrical Engr., National Tsing Hua University, Hsinchu, TAIWAN
Po-Tai Cheng Center for Advanced Power Technologies, Dept. of Electrical Engr., National Tsing Hua University, Hsinchu, TAIWAN

DOI:

https://doi.org/10.18618/REP.2009.4.233240

Keywords:

Distributed generation systems, harmonic damping, harmonic droop control, Microgrid

Abstract

Distributed generation based on emerging energy technologies has become an attractive alternative to the conventional centralized power stations, and has drawn much interest due to the increasing demand of premium electric power. The Microgrid is a great example of integrating distributed energy resources through power electronics interface converters for grid-connected or islanding operation. This paper presents a cooperative harmonic filtering strategy for the interface converters of distributed energy sources to address harmonic issues in a low-voltage Microgrid system. A droop control method based on the reactive volt-ampere consumption of harmonics of each interface converter is designed and implemented, to accomplish the overall harmonic filtering workload can be evenly shared among converters without any communications. The operation principle is discussed in details. Computer simulations and laboratory test results are also presented to validate the distributed harmonic damping capability of the proposed strategy.

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Author Biographies

Tzung-Lin Lee, Dept. of Electrical Engineering, National Sun Yat-sen University, Kaohsiung, TAIWAN

received the B.S. degree in electrical engineering from Chung Yuan Christian University, Taoyuan, TAIWAN, in 1993, the M.S. degree in electrical engineering from National Chung Cheng University, Chiayi, TAIWAN, in 1995, and the Ph.D. degree in electrical engineering from National Tsing Hua University, Hsinchu, TAIWAN, in 2007. From 1997 to 2001, he was a research engineer at the Microwave Department in Electronics Research & Service Organization (ERSO), Industrial Technology Research Institute (ITRI), Hsinchu, TAIWAN. He is currently an Assistant Professor in the department of electrical engineering, National Sun Yat-sen University, Kaohsiung, TAIWAN. His research interests are in utility applications of power electronics.

Chia-Tse Lee, Center for Advanced Power Technologies, Dept. of Electrical Engr., National Tsing Hua University, Hsinchu, TAIWAN

received the B.S. degree in electrical engineering from National Tsing Hua University, Hsinchu, Taiwan in 2007. He is currently pursuing the Ph.D. degree in the same university. His research interests include power electronics for distributed generation systems and power converter controls.

Po-Tai Cheng, Center for Advanced Power Technologies, Dept. of Electrical Engr., National Tsing Hua University, Hsinchu, TAIWAN

received the B.S. degree from National Chiao Tung University, Hsinchu, Taiwan in 1990 and M.S.E.E. and Ph.D. degrees from the University of Wisconsin, Madison, WI, USA in 1994 and 1999 respectively. He is currently a professor in the Department of Electrical Engineering, National Tsing Hua University, Hsinchu, Taiwan. His research interests include distributed generation systems, utility applications of power electronics, power quality issues and high power converters.

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