電磁モータの軽量化を目的とした固定子のトポロジー最適化

抄録

In this study, we have discussed the design optimization based on topology optimization for reducing the weight of an interior permanent magnet synchronous motor. The proposed method is based on the genetic algorithm, and objective functions were designed to reduce the weight and keep the average torque. The previous works applied the proposed method to a motor rotor, and in this paper, the proposed method is applied to a motor stator. To use the method for the stator, the coil area has to be constant in all cases because the specification of the motor strongly depends on the coil area on the stator. To realize the constant area of the coil, a novel way to modify the design point of the optimization based on the bisection method is proposed. The validity of the proposed method is shown by applying the proposed method to the practical problem based on the IEEJ D-model.