Optimization design of planar switched reluctance motors based on electromagnetic force characteristics

A new type of planar switched reluctance motor (PSRM) is proposed based on the switched reluctance principle. The configuration, principle, and mathematical model of the PSRM are clarified. According to the special structure form the complex magnetic circuit characteristic of the PSRM, 3D transient electromagnetic model of the PSRM is built based on ANSOFT Maxwell/3D. Based on the built model, the electromagnetic distributions and electromagnetic force characteristics of the PSRM are analyzed. In addition, the air gap and translator yoke of the PSRM are analyzed. Simulation results show that the length of the air gap and the thickness of the translator yoke are very important parameters for influencing the performance of the PSRM. The parameters of the optimal structure of the PSRM are revised via the simulation. A prototype of the PSRM is manufactured according to the optimization results, and experiments are performed. The design method is validated by the analysis of the experimental results. The theoretical foundation of the structure design and the development of the PSRM are provided. The PSRM is expected to be utilized in the application of high precision processing.