基于频率自适应广义积分控制器选择性谐波电流控制策略

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Abstract To improve the compensation performance of three-phase shunt active power filter (APF), a novel current control strategy is proposed based on frequency adaptive generalized integrators (GI). The method employs an array of generalized integrators, one for the fundamental, and one for each harmonic, implemented in stationary frame. Because of the characteristics of the GI of the infinite open loop gain and high selectivity, zero steady-state error and selective compensation of harmonics are achieved. The proposed controller is designed directly in Z-domain in order to eliminate the unexpected loss of gain and detuning of GI during digitalization processing. The frequency adaptive of the GI is realized by keeping the number of samples per fundamental fixed, and high compensation precision at the each harmonics in the presence of grid frequency variation is achieved. The effectiveness of the control scheme proposed is verified completely by experimental results.

Key words： Harmonic elimination generalized integrators frequency adaption selective harmonic compensation zero steady-state error

Received: 13 October 2011 Published: 25 March 2014

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TM48

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	Xie Chuan
	He Chao
	Yan Hui
	Yang Hua
	Chen Guozhu

Cite this article:

Xie Chuan,He Chao,Yan Hui等. Selective Harmonic Current Control Strategy Based on Frequency Adaptive Generalized Integrators[J]. Transactions of China Electrotechnical Society, 2013, 28(9): 65-72.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I9/65

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