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A Study on Tuning of Current Controller for Grid-connected Inverter Using Particle Swarm Optimization  

Ahn Jong-Bo (한국전기연구원)
Kim Won-gon (부산대학교 전기공학과)
Hwang Ki-Hyun (동서대 인터넷공학부)
Park Jun-H (부산대학 전기공학과)
Publication Information
The Transactions of the Korean Institute of Electrical Engineers B / v.53, no.11, 2004 , pp. 671-679 More about this Journal
Abstract
This paper presents the on-line current controller tuning method of grid-connected inverter using PSO(particle swarm optimization) technique for minimizing the harmonic current. Synchronous frame PI current regulator is commonly used in most distributed generation. However, due to the source voltage distortion, specially in weak AC power system, current may contain large harmonic components, which increase THD(total harmonic distortion) and deteriorates power quality. Therefore, some tuning method is necessary to improve response of current controller. This paper used the PSO technique to tune the current regulator and through simulation and experiments, usefulness of the tuning method has been verified. Especially in simulating the tuning process, ASM(average switching model) of inverter is used to shorten execution time.
Keywords
Renewable Energy Resources; Grid-Connected Inverter; Distributed Generation; Particle Swarm Optimization; Current Harmonics; Power Qualify; Current Control; d-q Transform; Proportional-Integral Control;
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