Application of Reduced-Order extended Kalman Filter in permanent magnet synchronous motor sensorless regulating system

摘要：

Aim at the existing problems of the Extended Kalman Filter (EKF) in speed sensorless control system of permanent magnet synchronous motor (PMSM), such as too much computation, complex structure and high cost. A kind of Reduced-order Extended Kalman Filter (Reduced-order EKF) in speed sensorless control system of PMSM is proposed in this paper. By estimating the counter electromotive force according to the stator current observed as state variables, the reduced-order and the decoupling of the system equation is realized. On this condition, the motor speed is estimated by using the Reduced-order EKF. Compared with the traditional method of EKF, the system order is reduced, the process of iteration of speed estimation is greatly simplified and it is easy to realization of the digitization system by using this method. The simulation results have shown that this system has fast reacting speed, good dynamic performance, adjust parameters easily, and beneficial to realize digital system.

关键词： PMSM speed sensorless Reduced-Order EKF control strategy simulation analysis

作者: Wang Wenjie Zhang Min Wu Qinghai

作者单位: School of Electronic and Electrical Engineering, Huaiyin Institute of Technology, Huaian, 223003, China

会议类型: 国际会议

会议名称: 2010 International Conference on Digital Manufacturing and Automation(2010 数字制造与自动化国际会议 ICDMA 2010)

会议地点: 长沙

会议语种:英文

页码: 271-274

在线出版日期: 2010-12-18（万方平台首次上网日期，不代表论文的发表时间）