軽量化のためのトポロジー最適化を用いた電磁モータにおける回転子鉄心の最適設計

抄録

The goal is to achieve high performance by reducing the mass of electromagnetic motors instead of increasing the torque density or the output density of electromagnetic motors. Methods to reduce the weight of electromagnetic motors can be categorized into structural optimization, use of new materials, and modification of the torque generation principle. In this paper, we focus on structural optimization for weight reduction of electromagnetic motors. From many electromagnetic motor types, we select an IPM motor that can achieve high torque and high efficiency. We focus on the structure of the rotor core of IPM motor and design a lightweight structure using topology optimization with a normalized Gaussian network. IEEJ D-model is selected as the reference electromagnetic motor. As a result, although the torque ripple was larger than D-model, the average torque was the same as D-model and the structure of that was lighter than D-model.