基于AEKF的永磁同步电机容错控制研究

发布时间：2018-01-08 23:31

本文关键词：基于AEKF的永磁同步电机容错控制研究　出处：《电力电子技术》2017年10期 　论文类型：期刊论文

【摘要】：永磁同步电机(PMSM)驱动系统需要具备故障容错运行的能力,因此提出一种基于自适应扩展卡尔曼滤波(AEKF)的电动汽车(EV)用PMSM驱动系统故障容错控制策略。由于AEKF能连续估计系统状态并获取系统统计特性,故新控制方案基于AEKF设计了观测器。控制器检测到传感器故障发生后,立即进行重构以保证系统连续运行。不同于传统的扩展卡尔曼滤波(EKF)方案,后者使用了固定的协方差矩阵,新的AEKF方案能自适应地调整协方差矩阵,大大提高了控制器精度和鲁棒性。最后,基于PMSM驱动试验平台,进行了新方案和传统EKF方案的对比试验,试验结果验证了新方法的转速估计更精确,鲁棒性更好。
[Abstract]:Permanent magnet synchronous motor (PMSM) drive system should have the ability of fault tolerant operation, we propose an extended Calman filter based on adaptive (AEKF) electric vehicle (EV) with PMSM drive system fault tolerant control strategy. Because AEKF can obtain the statistical characteristics of continuous estimation system and system state, so the new control scheme based on AEKF design the observer. The controller detects sensor fault, immediate reconstruction to ensure continuous operation of the system. Different from the traditional extended Calman filter (EKF) scheme, which uses a fixed covariance matrix, the new AEKF scheme can adjust the covariance matrix adaptively, greatly improves the accuracy and robustness of the controller. Finally, the PMSM driver the test platform based on the contrast experiments of the new schemes and the traditional EKF scheme, experimental results show that the new method of speed estimation is more accurate and better robustness.

【作者单位】：安徽理工大学力学与光电物理学院;安徽理工大学电气学院;
【基金】：安徽理工大学博士基金项目(20171021)~~
【分类号】：TM341
【正文快照】： i引言近年来,PMSM越来越广泛地用于现代电力传动系统,如EVW。一个典型的PMSM矢量控制器,需要反馈至少两个定子电流信号和一个转速信号,以保证氋效的系统传动运行。由于任何传感器故障可能导致PMSM传动系统的性能和可靠性降低,故设计一个故障容错控制方案是保证EV系统连续可靠

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