基于功率误差比较的开绕组无刷双馈发电机直接功率控制

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Abstract A brushless doubly-fed wind power generator with open-winding structure and its control system are proposed. The open-winding brushless doubly-fed generator (OW-BDFG) means that the control winding is opened completely and its two ends are respectively connected to an inverter to control the OW-BDFG. This topology structure, which has smaller inverter capacity and lower switching frequency, can independently control each phase current of the control winding to enhance the control flexibility and fault redundancy ability of the wind power system. Moreover, for the special structure of the OW-BDFG, a power error comparison direct power control (PEC-DPC) method is proposed to implement the power tracking through the decoupling control of the active and reactive powers of the OW-BDFG. This control method has the properties of simple structure, easy realization, small computational amount, fast dynamic response, as well as good real-time performance without observing the flux amplitude. Finally, the feasibility and superiority of the proposed OW-BDFG and its PEC-DPC system are verified through the simulation comparison and the experimental study.

Key words： Brushless doubly-fed wind power generator power tracking open-winding direct power control error comparison

Received: 10 September 2015 Published: 20 April 2016

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TM614

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	Jin Shi
	Wang Zhongzheng
	Wang Dairui
	Zhu Liancheng

Cite this article:

Jin Shi,Wang Zhongzheng,Wang Dairui等. Direct Power Control for Open-Winding Brushless Doubly-Fed Generator Based on Power Error Comparison[J]. Transactions of China Electrotechnical Society, 2016, 31(7): 50-56.

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https://dgjsxb.ces-transaction.com/EN/ OR https://dgjsxb.ces-transaction.com/EN/Y2016/V31/I7/50

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