关键词: 内置式永磁电机, 有限元法, 气隙磁密, 反电动势, 齿槽转矩

Abstract: Using two-dimensional finite element method, the no-load performance of interior permanent magnet motor with two different magnet shapes was analyzed. Under the equal volume and position of the magnets, the no-load air-gap flux density and back-electromotive force of the motor with the cuboid magnets are better than those with the tile magnets, but the cogging torque is higher. The no-load air-gap flux density, back-electromotive force and the cogging torque were obtained and compared for the motors with two magnet shapes in terms of the same volume and different positions and heights of the magnets. The presented results are helpful for the optimal design of interior permanent magnet motors.