基于有限元法的开关磁阻电机抑制振动优化

Vibration Suppression Optimization of Switched Reluctance Motor Based on Finite Element Method

摘要: 通过优化改进电机本体结构以减小开关磁阻电机振动和噪音的研究已成为热点研究方向之一。本文研究了一种转子齿的优化设计方法，改变了转子齿磁场分布，削弱了气隙径向磁密和径向力，达到减小电机振动的目的。利用有限元法，对一台三相12/8极转子齿开槽的开关磁组电机建模，对开槽位置和宽度进行优化，选取了最优槽尺寸。仿真结果表明，转子齿开槽结构可以优化气隙磁场，减小径向力，有效抑制振动。

Abstract: In order to reduce the vibration and noise of switched reluctance motor (SRM), it has become one of the hot research directions to optimize the structure of the motor. In this paper, a kind of slotting on the rotor teeth is studied, which changes the magnetic field distribution of the rotor teeth, weakens the radial magnetic density and radial force of the air gap, and achieves the purpose of reducing the vibration of the motor. By using the finite element method, a three-phase 12/8 pole SRM with slotted on the rotor teeth is modeled. The slots’ position and width are optimized and the optimal slots sizes are selected. The simulation results show that the structure with slotted on the rotor teeth can optimize the air gap magnetic field, reduce the radial force and suppress the vibration effectively.