Design and Analysis of Spoke Type Radial Flux Interior Permanent Magnet Synchronous Motor for High-Speed Application

This paper presents a detailed computer-aided design (CAD) method of a spoke-type radial flux interior permanent magnet synchronous motor (IPMSM) aiming for high-speed applications. Various design variables such as stacking factor, flux density in back iron and air-gap, slot space factor, number of magnet poles, electric and magnetic loading, air gap length, stator current density, winding factor, etc., are assumed. Simplified design equations are used for the CAD algorithm. The output of the developed CAD algorithm gives design data and the calculated performance of the motor. Using the developed CAD algorithm three different motors of 2, 5, and 120 kW ratings are designed. Finite-element analyses for all three obtained designs are carried out for design validation.