Interior PMSM double layer rotor core parametric design study

Abstract

This paper presents a rotor core design parameter study of double layer rotor type interior permanent magnet synchronous motor (TPMSM) for numerous objective functions. A specific study approach is proposed, and 16 distinct cases are evaluated using finite element analysis (FEA) and a two-level fractional factorial design introduced in the paper. FEA yields more accurate results for the objective functions than the magnetic equivalent circuit method because the rotor structure has a complicated arrangement of permanent magnets, barriers, bridges, and lips. A prototype was manufactured based on the multi-objective optimal design developed using the proposed study method. The simulation results are experimentally verified using the prototype.