Journal of Electrical Engineering and Automation

As an important development direction in the field of electric motors, high power density Permanent Magnet Synchronous Motors (PMSMs) have broad application prospects in new energy vehicles, industrial equipment, and other fields. However, the thermal management issues caused by high power density have become a bottleneck in their popularization and application. This paper focuses on the design and thermal management optimization of high power density PMSMs, analyzes the heat source distribution characteristics of the motor under high power density, and discusses the impact of cooling system and material optimization on motor performance. Through the optimization of motor design and its thermal management strategies, a comprehensive scheme to improve motor thermal efficiency and power density is proposed, providing theoretical basis and technical support for further enhancing the application of PMSMs in high-efficiency equipment.

High power density; Permanent Magnet Synchronous Motor (PMSM); Thermal management; Cooling system; Material optimization