提高无刷双馈电机效率的方法和途径

The Method and Way to Improve the of Efficiency for Brushless Doubly-Fed Machine

无刷双馈电机是一种新型的感应电机,可以降低调速系统的容量,对电网的谐波污染小,因而具有很好的发展前景。从无刷双馈电机的原理出发,分析定子和转子的损耗,进一步对定子绕组极数的选择、定子绕组的设计形式、转子绕组极数的选择以及转子绕组的设计等方面进行详尽说明和分析,总结出提高该类电机效率的方法和途径。

The brushless doubly- fed machine（BDFM） is a new type of induction machine which reduces the capacity of adjustable speed drive systems and decreases harmonic pollution. Therefore it has good prospect. Starting from the principle of BDFM, this paper analyzes the loss of stator and rotor, Furthermore, the selection of pole number and the design form of stator and rotor are illuminated and analyzed in detail. Finally, the paper summarizes the method and way to improve the efficiency of electric motor.