直驱型电励磁同步发电机新型磁链观测技术

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Abstract Considering the operation features of direct-drive electrically excited synchronous generator(EESG) in wind power system, the flux observer based on voltage model of EESG is feasible. Improved second-order generalized integrator(ISOGI) which could eliminate the DC bias and integral windup is used to replace pure integrator in this paper, and a new flux observer based on ISOGI is achieved. The amplitude and phase of air-gap flux are obtained from ISOGI flux observer, and the EESG vector control system based on air-gap flux oriented could be achieved. Results show feasibility of ISOGI flux observer, and this method has excellent steady and transient performance.

Key words： Improved second-order generalized integrator flux observer air-gap flux oriented control electrically excited synchronous generator

Received: 01 July 2013 Published: 25 March 2014

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TM315

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	Articles by authors
	Zhao Xin
	Jin Xinmin
	Li Geliang
	Tong Yibin

Cite this article:

Zhao Xin,Jin Xinmin,Li Geliang等. New Flux Observer of Direct-Drive Electrically Excited Synchronous Generators[J]. Transactions of China Electrotechnical Society, 2013, 28(10): 75-82.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2013/V28/I10/75

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