基于改进电流法的PMSM绕组开路诊断方法  

PMSM Winding Open-Circuit Diagnosis Method Based on Improved Current Method

作　　者：李龚睿子 陈超波[1] 张彬彬[1] 郎宝华[1] 高嵩[1] LI Gongruizi;CHEN Chaobo;ZHANG Binbin;LANG Baohua;GAO Song(School of Electronic Information Engineering,Xi′an Technology University,Xi′an 710021,China)

机构地区：[1]西安工业大学电子信息工程学院,陕西西安710021

出　　处：《电机与控制应用》2022年第7期63-69,共7页Electric machines & control application

基　　金：陕西省重点研发计划项目(2021GY-149);陕西省技术创新引导专项(基金)计划项目(2022QFY01-16)。

摘　　要：针对传统永磁同步电机(PMSM)绕组开路故障诊断方法效率低下、适应性差等问题,提出了一种基于改进平均电流法的自适应阈值PMSM绕组开路故障诊断方法。首先,获取PMSM三相正常状态和故障状态的电流信号。其次,为克服测量噪声影响,对该信号进行滑动窗口滤波处理。然后,提出了一种改进平均电流法的绕组开路故障诊断方法,该改进平均电流法可得到自适应阈值,将滤波后的电流值与阈值的比较结果作为故障判断依据。最后,通过仿真平台验证所提算法,结果表明所提方法快速性好,稳定性高。The traditional winding open-circuit fault diagnosis methods of permanent magnet synchronous motor(PMSM)have low efficiency and poor adaptability.An adaptive threshold PMSM winding open-circuit fault diagnosis method based on the improved average current method is proposed.Firstly,the current signals of the PMSM three-phase normal state and fault state are obtained.Secondly,to overcome the influence of measurement noise,the signal is filtered by a sliding window.Thirdly,an improved average current method for winding open-circuit fault diagnosis is proposed.The improved average current method can obtain the adaptive threshold,and the comparison result between the filtered current value and the threshold is used as the basis for fault judgment.Finally,the proposed algorithm is verified by the simulation platform.The results show that the proposed method has advantage of quickness and strong stability.

关 键 词：永磁同步电机 绕组开路故障 平均电流法 自适应阈值 滑动窗口滤波 

分 类 号：TM341[电气工程—电机]