鱼雷永磁推进电机齿槽力矩分析与抑制

Analysis and Suppression of Cogging Torque of Permanent Magnet Motor for Torpedo Propulsion

鱼雷永磁推进电机的齿槽力矩是影响力矩脉动的重要因素之一,对齿槽力矩的产生机理进行了数学解析,基于极槽数配合法和辅助槽法对齿槽力矩的抑制进行了探讨,建立了不同极/槽数配合电机的2D有限元模型并进行了瞬态仿真,对不同辅助槽数及其尺寸大小对应的齿槽力矩进行了分析,结果验证了相关理论与分析方法的可行性与正确性。

The cogging torque of permanent magnet （PM） motor for torpedo propulsion influences the torque ripple. In this paper, the generation mechanism of cogging torque is analyzed mathematically. Based on the pole-slot combination method and the teeth notching method, suppression of the cogging torque is discussed. Two-dimensional finite element models of the PM motor with different pole-slot number are established, transient simulations are performed, and the cogging torques relating to different number and dimension of teeth notches are analyzed. The results verify the feasi- bility and validity of the proposed theory and analysis method.