제어특성과 기계적 응력을 고려한 Spoke-Type IPMSM의 최적설계에 대한 연구

Abstract

This paper introduces the optimal design process to effectively reduce the cogging torque considering the control characteristic and mechanical stress on the rotor in Spoke-Type interior permanent magnet synchronous motor (IPMSM). The maximum torque control is used to calculate the torque and efficiency, and the structural analysis is used to analyze the mechanical stress on the rotor under motoring. For an increase in torque and efficiency in constant power region, the saliency ratio is increased than initial model. The two points, 2000 rpm (rated speed) in constant torque region and 4000 rpm (double rated speed) in constant power region, are chosen for comparing the torque and efficiency with initial model. The maximum torque control is consisted of maximum torque per ampere (MTPA) control in constant torque region and flux weakening (FW) control in constant power region. In the optimal design process, radial basis function (RBF) and genetic algorithm (GA) are used.