volume | PIER Journals

Abstract

This paper proposes an Interior Permanent Magnet (IPM) machine for electric vehicles, which features excellent heat dissipation performance and maximizes the utilization of reluctance torque. The inverted triangular structure design, combined with multi-layer flux barriers and ventilation auxiliary slots, effectively increases the saliency ratio and enhances the reluctance torque. The rotor self-ventilation slots significantly expand the heat dissipation area, improve the heat dissipation performance under steady-state operation, and extend the service life of the rotor. In addition, performance evaluation of the IPM machine is conducted, covering back-EMF, torque performance, dq-axis inductances, rotor stress and deformation, as well as thermal performance. This work provides guidance and reference for machine design.

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Mr. Yujie Tang

Dr. Jingfeng Mao

Professor Junqiang Zheng