永磁电机在风力发电系统中的应用及其发展趋向

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Abstract Permanent magnet(PM) machine has advantages of high power density, high efficiency and high reliability, and has been using widely in the wind power generation systems. However, the PM wind generators face the challenge of how to increase the ratio of performance to the cost due to the expensive rare earth PM material. In this paper, based on the comparative study on the feature and performance of PM generators for high speed, medium speed and low speed direct-driven wind power generation systems, the key design techniques of PM wind generators are explained. The influence of machine structure and combination of pole-slot number on the performance, the prevention of permanent magnet from demagnetizing, and the reasonable matching between generator and converter are analyzed. Besides, the development tendency of design and control technology of the PM wind power generators is discussed.

Key words： Wind power generation system permanent magnet generators design feature key technique development tendency

Received: 15 March 2012 Published: 20 March 2014

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TM351

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Wang Fengxiang. Application and Development Tendency of PM Machines in Wind Power Generation System[J]. Transactions of China Electrotechnical Society, 2012, 27(3): 12-24.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2012/V27/I3/12

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