一种12/10极模块化定子混合励磁开关磁阻电机分析

In order to improve the output torque and power density and decrease the torque ripple of conventional switched reluctance machines (CSRMs), a novel three-phase 12/10-pole modular hybrid-excited SRM (MHSRM) is proposed in this paper. The stator of the motor consists of six U-shaped stator modules, and a permanent magnet is embedded in the slot between two poles. Each stator module forms an independent magnetic circuit, which improves the fault tolerance of the motor. At the same time, due to the addition of permanent magnets, it has a larger output torque and power density. This paper introduces the machine topology, operating principle and mathematical model of MHSRM. In order to verify the good performance of the motor, two-dimensional finite element analysis (FEA) is used to analyze the static electromagnetic field and magnetic characteristics of a MHSRM, a CSRM and a non-permanent magnet segmented-stator SRM with the same size. The influence of permanent magnet on the electromagnetic torque of MHSRM is also analyzed. At last, one MHSRM and one CSRM prototypes of the same size are manufactured, and the static electromagnetic and dynamic performance of two motors are tested. The performance is also compared with the 6/5-pole MHSRM. The experimental results verify the correctness of FEA results, and prove that MHSRM has better electromagnetic performance.