摘要
新能源汽车驱动电机作为动力系统核心部件,其运行可靠性直接决定整车性能与行车安全。针对当前主流永磁同步电机,文章深入解析其在复杂工况下高发的电气劣化、机械损伤及热管理失效3类典型故障的演化机理,重点构建融合多源信号分析(含电流波形畸变、振动频谱特征、红外热像检测)的综合诊断体系,并提炼基于工程实践的精准维修技术范式。通过典型故障案例验证表明,该技术方案可有效定位永磁体热退磁、轴承点蚀等复杂故障,将故障识别准确率提升至95%以上,为新能源汽车驱动电机一线维保工作提供系统化、可落地的技术支撑。
As a core component of the power system,the operational reliability of the drive motor of new energy vehicles directly determines the overall performance of the vehicle and driving safety.For the current mainstream permanent magnet synchronous motors,this article deeply analyzes the evolution mechanisms of three typical faults that occur frequently under complex working conditions,namely electrical deterioration,mechanical damage,and thermal management failure.It focuses on constructing a comprehensive diagnostic system that integrates multi-source signal analysis(including current waveform distortion,vibration spectrum characteristics,and infrared thermal image detection).And distill the precise maintenance technology paradigm based on engineering practice.The verification through typical fault cases shows that this technical solution can effectively locate complex faults such as thermal demagnetization of permanent magnets and pitting corrosion of bearings,increasing the accuracy of fault identification to over 95%,and providing systematic and practical technical support for the front-line maintenance work of drive motors in new energy vehicles.
作者
刘为为
Liu Weiwei(Jiuzhou Polytechnic School of Mechatronics and Automotive Engineering,Xuzhou 221100,China)
出处
《汽车电器》
2025年第10期168-170,共3页
Auto Electric Parts
关键词
新能源汽车
永磁同步电机
故障诊断
振动分析
热管理
new energy vehicles
permanent magnet synchronous motor
fault diagnosis
vibration analysis
thermal management
