摘要
为了提高无位置传感器内置式永磁同步电机(IPMSM)的低速运行性能,提出一种基于高频信号注入的转子位置鲁棒观测方法。采用注入脉振高频电压信号的方式,通过高频电流的幅值信息获取转子位置误差信号,对信号处理及数字滤波器设计进行分析。在此基础上,研究一种具有较强抗负载扰动能力的转子位置观测器,通过考虑负载扰动转矩动态特性,给出位置鲁棒观测器的理论设计方法,根据实际扰动转矩特点及位置观测期望误差,采用极点配置法设计反馈矩阵系数。通过IPMSM无位置传感器矢量控制系统进行了实验,结果验证了该控制策略的有效性。
A robust position observer of sensorless interior permanent magnet synchronous motor （IPMSM） adopting high frequency signal injection is proposed for low speed operation. The rotor position error signal is obtained from the magnitude of the induced high frequency current by injecting pulsating high frequency voltage. Both the signal process and the digital filter design are analyzed. On the basis, a robust rotor position observer with improved robustness for load disturbance is proposed. The theory design method of the robust observer was studied considering the dynamic characteristic of the load change. Then pole assignment method is adopted for the feedback gain matrix selection of the observer according to the load disturbance and the expected estimation error. The experimental results demonstrate the feasibility of the sensorless control strategy by an IPMSM vector controlled system.
出处
《电工技术学报》
EI
CSCD
北大核心
2012年第11期62-68,共7页
Transactions of China Electrotechnical Society
基金
教育部高校博士点科研基金(20102302120012)
中国博士后科学基金特别(201003427)资助项目
