基于高频注入的永磁同步电机零低速下位置传感器失效故障容错控制  

Fault-tolerant Control of Position Sensor Failure for PMSM at Zero and Low Speed Based on High Frequency Injection

作　　者：杜思宸 全力[1] 朱孝勇[1] 张丽 左月飞 DU Sichen;QUAN Li;ZHU Xiaoyong;ZHANG Li;ZUO Yuefei(School of Electrical and Information Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu Province, China)

机构地区：[1]江苏大学电气信息工程学院,江苏省镇江市212013

出　　处：《中国电机工程学报》2019年第10期3038-3046,共9页Proceedings of the CSEE

基　　金：国家自然科学基金项目(51777089;51877099);江苏省高校优势学科资助项目~~

摘　　要：为提高电动汽车等领域永磁驱动电机系统的可靠性,该文对电动汽车领域永磁同步电机位置传感器失效故障下容错控制技术进行研究。针对传统基于旋转高频注入的位置传感器失效故障容错控制策略在信号解调过程中由于多重滤波器的引入所带来滞后效应叠加、参数整定困难和动态性能受限等固有难题,提出利用二阶广义积分器来代替传统信号解调过程中所运用的带通滤波器和高通滤波器,并根据估计的转速信息来自适应地改变二阶广义积分器的中心频率,有效提高了转子位置的辨识精度和位置失效故障容错系统的动态性能,为电动汽车永磁驱动电机系统领域位置传感器失效下提供了一种行之有效的容错控制方法。通过理论分析与实验结果,验证所提容错方法的正确性和有效性。To increase the reliability of permanent magnet drive motor system in electric vehicles and other fields, the fault-tolerant control technology for permanent magnet synchronous motor position sensor failure in electric vehicles was investigated. For the conventional fault-tolerant control strategy of position sensor failure based on rotating high frequency injection, the inherent problems of multiple lag effect, difficult adjustment of parameters, and poor dynamic performance were brought about due to the use of multiple filters in the process of signal demodulation. To solve above problems, the band-pass filter and the high-pass filter in the conventional signal demodulation process were replaced by the second-order generalized integrator. In addition, the center frequency of the second-order generalized integrator was adaptively changed as the estimated speed information to effectively enhance the accuracy of estimated rotor position and the dynamic performance of fault-tolerant control system.It provided an effective fault-tolerant control method for permanent magnet drive motor system position sensor failure in electric vehicles. The correctness and effectiveness of the proposed fault-tolerant control scheme were verified by the theoretical analysis and the experimental results.

关 键 词：位置传感器故障 容错控制 高频注入 二阶广义积分器 

分 类 号：TM351[电气工程—电机]