可変起磁力と可変磁気抵抗を用いたIPMモータのRNAモデル

概要

論文の詳細を見る
Interior permanent magnet (IPM) motors have large amounts of torque and are much more efficient than other motors since they can utilize both magnetic torque and reluctance torque together. However, the current vector needs to be controlled to utilize both torques effectively. Hence, it is necessary to design and analyze motor drive circuits in addition to motor structures. We propose a method of calculating the characteristics of an IPM motor based on reluctance network analysis (RNA). The proposed RNA model of the IPM motor consists of multiple nonlinear reluctances and magnetomotive forces, which periodically change with the rotor position so that the rotary motion of the rotor can be simulated. The RNA model can easily be coupled with an electric circuit and mechanical system. Therefore, it is suitable for designing and analyzing the IPM motor-drive system. The validity of the proposed method is proved by comparing its results with those obtained from the finite element method (FEM).