轴向磁通切换型混合励磁同步电机优化分析

Optimization of Stator-separated Axial Flux-switching Hybrid Excitation Synchronous Machine

提出一种定子分割式轴向磁通切换型混合励磁同步电机,分析电机的电磁特性,进行优化分析。基于三维有限元方法,建立电机的有限元分析模型,获得电枢绕组磁链、空载电动势及绕组电感等参数电磁特性;分析定子槽口宽度、永磁体宽度、定子槽深度及转子齿宽度变化对绕组感应电动势的影响规律。有限元分析结果表明:通过调节励磁电流,线圈磁通变化明显,调磁效果较好;优化分析结果为电机尺寸的确定提供了一定的理论依据。

A stator-separated axial flux-switching hybrid excitation synchronous machine （SSAFHESM） was introduced in this paper. Based on the 3-D finite element method （ FEM）, the FEM model was built and some electromagnetic characteristics including the armature wingding flux, EMF at no load, winding inductance and so on were obtained. The influence on the EMF by the stator slot width, PM thickness, stator slot depth and rotor tooth width were analyzed, and the structure parameters were optimized. FEA results show that the coil flux is changed obviously by adjusting the field current and a good field control capability is obtained; the optimized results provide some theory basis for the design of SSAFHESM.