Design and Analysis of High Torque Density Permanent Magnet Synchronous Motor Based on Heat Pipe

Abstract

High torque density permanent magnet synchronous motors (PMSM) are widely used in aerospace and vehicles. Nevertheless, due to high torque density, high heat generation increases the temperature of the motor, which may damage the motor in severe cases. Therefore, the heat dissipation problem is important research topic of high torque density motor. In this paper, a high torque density PMSM is designed. The cooling form of PMSM that heat pipe inserted into the stator slot is first determined. Based on this, the electromagnetic design scheme of the motor is designed. In addition, the high heat dissipation capacity of the heat pipe is verified according to comparing the cooling effects of two methods: natural cooling and heat pipe cooling.