Li Yulin, Yan Changhao, Wang Anqi, Li Jun, Zeng Lubin, Pei Ruilin
Department of Electric Engineering, Shenyang University of Technology, Shenyang 110870, China.
Suzhou Inn-Mag New Energy Ltd., Suzhou 215000, China.
Materials (Basel). 2024 Apr 23;17(9):1936. doi: 10.3390/ma17091936.
Considering the high-speed and high power density technical specifications of new energy vehicle motors, there is a growing demand for rotor strength as motor peak speeds reach 20,000 r/min and beyond. The utilization of non-oriented silicon steel with a high yield strength in rotors has emerged as a promising approach to increase motor speed. However, the magnetic and mechanical properties of high-strength silicon steel under variable temperature conditions have not been fully explored, particularly in regards to their impact on motor torque, efficiency, and speed. This manuscript investigates the behavior of high-strength silicon steel before and after annealing and at different temperatures, analyzing its influence on high-speed motor performance. The validity and feasibility of this study are confirmed through prototype testing, providing a comprehensive reference for engineering design.
考虑到新能源汽车电机的高速和高功率密度技术规格，随着电机峰值速度达到20000转/分钟及以上，对转子强度的需求日益增长。在转子中使用具有高屈服强度的无取向硅钢已成为提高电机速度的一种有前景的方法。然而，高强度硅钢在变温条件下的磁性能和机械性能尚未得到充分研究，特别是它们对电机转矩、效率和速度的影响。本文研究了高强度硅钢在退火前后以及不同温度下的性能，分析了其对高速电机性能的影响。通过样机测试证实了本研究的有效性和可行性，为工程设计提供了全面的参考。
