基于旋转坐标系IPMSM的容错控制策略研究

Research on Fault-tolerant Control Strategy Based on Rotating Coordinate System IPMSM

针对内置式永磁同步电机(IPMSM),当以旋转变压器为位置传感器发生严重故障时,提出了一种故障诊断及容错的方案。采用了基于旋转坐标系的改进滑模观测器算法和TypeⅡ型跟踪环路转子位置和角速度提取算法,用于IPMSNM的转子位置和角速度的估算。利用估算数据分析并检测位置传感器是否出现故障,并采用加权算法实现故障情况下系统的平滑切换。通过搭建Matlab/Simulink仿真模型对设计的方案进行验证,输出的结果显示了此方案具有较好的容错控制效果,说明了提出的这个方案可行性和有效性。

For built-in permanent magnet synchronous motors(IPMSM),when a resolver was used as a position sensor for a serious fault,a fault detection and fault tolerance solution was proposed.The improved sliding mode observer algorithm based on the rotating coordinate system and the TypeⅡtracking loop rotor position and angular velocity extraction algorithm were used to estimate the rotor position and angular velocity of IPMSNM.Use estimated data to analyze and detect whether the position sensor was faulty,and use a weighting algorithm to achieve smooth switching of the system under fault conditions.The design scheme was verified by building a Matlab/Simulink simulation model.The output results show that this scheme has a better fault-tolerant control effect,and demonstrates the feasibility and effectiveness of the proposed scheme.