基于信号注入法的Prius永磁同步电机退磁故障诊断  

Signal Injection-based Diagnosis of Demagnetization Faults of Prius Permanent Magnet Synchronous Motors

作　　者：葛晨 戴必翔 王闰羿 刘少伟 经周 江圳 GE Chen;DAI Bixiang;WANG Runyi;LIU Shaowei;JING Zhou;JIANG Zhen(Nanjing SAC Power Grid Automation Co.,Ltd.,Nanjing 211153,China)

机构地区：[1]南京国电南自电网自动化有限公司,江苏南京211153

出　　处：《电工技术》2024年第1期52-54,共3页Electric Engineering

摘　　要：永磁同步电机在电动汽车领域得到广泛应用,但由于弱磁控制与碰撞震动等因素,容易发生退磁故障。信号注入法得到的特征信号明显,噪声小,能够很好地反映电机不同故障状态。以Prius 2017款永磁同步电机为研究对象,分析了永磁体退磁规律,以此建立了永磁同步电机退磁故障模型,并通过信号注入法实现了退磁故障诊断。Permanent magnet synchronous motors are widely used in the field of electric vehicles,but prone to demagnetization faults due to factors such as weak magnetic control and collision vibration.Signal injection method enables the obtaining of obvious feature signals with low noise which can well reflect various fault states of the motor.By employing Prius 2017 permanent magnet synchronous motor as case object,the present work analyzed demagnetization law of permanent magnet and established a demagnetization fault model of permanent magnet synchronous motor,on which a demagnetization fault diagnosis through signal injection method was performed.

关 键 词：永磁同步电机 退磁故障 信号注入 故障诊断 

分 类 号：TM351[电气工程—电机]