磁通切换永磁电动机的齿槽转矩削弱研究

Cogging Torque Weakening of Flux-Switching Permanent Magnet Machine

由于具有双凸极结构和较高的气隙磁密等特点,磁通切换永磁电动机不可避免地存在着较大的齿槽转矩。详细分析了传统的齿槽转矩削弱方法,提出使用转子分段斜极结合转子齿极倒角的方法来削弱磁通切换永磁电动机的齿槽转矩,并选择4个关键参数建立了量化的目标函数,通过有限元分析验证了该方法的优越性。

Due to the double salient structure and air gap flux density, a flux-switching perma- nent magnet machine （FSPMM） inevitably has a large cogging torque. This paper analyzes the traditional method for weakening the cogging torque, proposes a strategy of combining rotor pole chamfering and step skewing to weaken the cogging torque of a FSPMM. Four key parameters are selected, and a quantitative objective function established. Feasibility of this method is shown using finite element analysis.