新能源汽车驱动电机绝缘系统测试技术综述  

A review of insulation system testing technologies for new energy vehicle drive motor

作　　者：朱光亚 林沐泓 刘国栋 王鹏[1] ZHU Guangya;LIN Muhong;LIU Guodong;WANG Peng(College of Electrical Engineering,Sichuan University,Chengdu 610065,China;Shanghai Ideal Automotive Technology Co.,Ltd.,Shanghai 201805,China)

机构地区：[1]四川大学电气工程学院,四川成都610065 [2]上海理想汽车科技有限公司,上海201805

出　　处：《绝缘材料》2024年第11期1-17,共17页Insulating Materials

摘　　要：电机是新能源汽车的关键驱动部件,绝缘系统是电机可靠性的重要保障,电机绝缘一旦失效,将对汽车的安全运行构成威胁。严酷的电热应力是导致绝缘失效的主要因素,在复杂脉冲参数和环境下对电机绝缘水平进行测试具有重要意义。本文从新能源汽车驱动电机绝缘系统的性能评估方法与影响因素、电压分布计算和薄弱点定位等方面综述国内外最新研究成果,并结合电压等级提升、功率密度提高、开断频率提高和开关速度增加的发展趋势,指出变频电机绝缘评估面临的问题和挑战,为未来该领域需重点关注的研究方向提供参考。The motor is the key drive component of new energy vehicles,and the insulation system is an important guarantee for motor reliability.Once the motor insulation fails,it will pose a threat to the safe operation of the vehicle.The severe electric heating stress is the main factor causing insulation failure,so it is of great significance to test the motor insulation level under complex pulse parameters and environmental conditions.This paper had reviewed the latest research results at home and abroad from several aspects of performance evaluation methods and influencing factors,voltage distribution calculation,and weak spot location of new energy vehicle drive motor insulation system.Combined with the development trend of voltage level improvement,power density improvement,breaking frequency improvement,and switching speed increase,the problems and challenges faced by insulation evaluation of variable frequency motor were pointed out,which provided reference for the future research in this field.

关 键 词：新能源汽车 绝缘系统 局部放电 耐电晕寿命 电压分布 

分 类 号：TM344.6[电气工程—电机]