永磁同步电机无位置传感器混合控制策略  

Hybrid Sensorless Control Strategy for Permanent Magnet Synchronous Motors

作　　者：王高林[1] 张国强[1] 贵献国[1] 徐殿国[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,黑龙江省哈尔滨市150001

出　　处：《中国电机工程学报》2012年第24期103-109,17,共7页Proceedings of the CSEE

基　　金：教育部高校博士点科研基金项目(20102302120012);中国博士后科学基金特别资助项目(201003427);台达电力电子科教发展基金资助项目(DREG2010003)~~

摘　　要：转子位置混合观测策略对于实现无传感器内置式永磁同步电机(interior permanent magnet synchronous motor,IPMSM)全速域运行非常关键。针对IPMSM无传感器矢量控制系统,提出一种由高频信号注入法与反电动势模型法的位置误差信息相融合的混合观测方法。低速运行时注入脉振高频电压信号,通过对高频电流幅值处理获得转子位置误差信号,中高速运行则通过反电动势模型滑模观测器获得位置误差信息,对两种方法所得位置误差信号进行归一化处理,并根据运行转速对归一化后的位置误差信号以加权的方式进行信息融合。通过一个软件锁相环获取混合位置观测值,并分析混合观测器的稳定性及参数设计。最后通过2.2kW IPMSM无传感器矢量控制系统验证了控制策略的有效性。The hybrid rotor position estimation is important for achieving the whole speed-range operation of sensorless interior permanent magnet synchronous motor （IPMSM）. A hybrid position observer with the position error information fusion that combines the pulsating high-frequency signal injection and the electromotive force （EMF） based method is proposed for vector control system. For low speed operation, the position error signal is obtained by the magnitude of the induced high-frequency current. While at higher speed, the error information is achieved from an EMF based sliding-mode observer. Then both the normalized position error signals are combined directly with a weighting function. A software phase-locked loop is adopted to obtain the hybrid rotor position information. Both the stability and the parameter design of the hybrid observer are analyzed. The experimental results demonstrate the feasibility of the proposed estimation strategy by a 2.2 kW IPMSM sensorless vector controlled drive.

关 键 词：永磁同步电机 无传感器混合控制 脉振高频信号注入 滑模观测器 位置误差信息融合 

分 类 号：TM351[电气工程—电机]