Research on design and thermal management optimization of high power density permanent magnet synchronous motors
高功率密度永磁同步电机设计与热管理优化研究

摘要

高功率密度永磁同步电机（PMSM）作为电动机领域中的重要发展方向，在新能源汽车、工业设备等领域具有广泛的应用前景。然而，高功率密度带来的热管理问题也成为其推广应用中的瓶颈。本文围绕高功率密度PMSM的设计与热管理优化展开研究，分析了电机在高功率密度下的热源分布特性，并探讨了冷却系统和材料优化对电机性能的影响。通过对电机设计及其热管理策略的优化，提出了一种提升电机热效率和功率密度的综合方案，为进一步提升PMSM在高效能设备中的应用提供理论依据和技术支持。

Abstract

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.