不平衡电网下基于降阶谐振器的双馈风电系统网侧变换器辅助控制策略

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Abstract In order to develop the operation performance of the overall DFIG generation system under unbalanced grid voltage conditions, the auxiliary control of the gird-side converter(GSC) must be taken into account. A current control scheme, using a reduced-order resonant controller(RORC), is proposed in this paper so as to achieve the selectable control targets, i. e., removing the oscillations in the active or reactive power. In this control strategy, the active(or reactive) power oscillations are directly to be controlled by RORCs in the synchronous reference frame. As a result, the reference calculations of the negative sequence currents and the sequential separations of the measured voltage are avoided. Simulation and experimental results are provided to demonstrate the availability of the proposed control strategy using RORCs.

Key words： Grid unbalance DFIG generation system reduced-order resonant controller grid-side converter auxiliary control scheme

Received: 30 July 2014 Published: 13 April 2015

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TM310

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	Wang Jianliang
	Zhang Yihuang
	Cheng Peng
	Nian Heng

Cite this article:

Wang Jianliang,Zhang Yihuang,Cheng Peng等. Auxiliary Control Strategy of DFIG’s GSC During Network Unbalance Based on Reduced-Order Resonant Controller[J]. Transactions of China Electrotechnical Society, 2015, 30(4): 35-43.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2015/V30/I4/35

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