开关磁阻电机扩展卡尔曼滤波无位置传感器控制的研究

Position Sensorless Control of the Switched Reluctance Motor Based on Extended Kalman Filter

无位置传感器控制策略对于提高开关磁阻电机驱动系统性能十分重要。该文提出一种利用扩展卡尔曼滤波(EKF)的方法来估计开关磁阻电机的转子位置和速度的方法,并实现了基于该方法的开关磁阻电机的无位置传感器控制策略,仿真结果表明该策略具有较好的预测和校正功能,可以精确地跟踪开关磁阻电机的位置和速度,解决系统参数变化、系统干扰和测量干扰对观测的影响。

It is important to use position sensorless controlling strategy to improve the performance of switched reluctance drive system.A novel method that estimates the speed and rotor of switched reluctance motor based on extended Kalman filter was introduced.By the algorithm and method,the position sensorless controlling strategy of switched reluctance motor was realized.The simulated results show that the method has better forecast,emendation,as well as precise track of position and speed of switched reluctance motor.In addition,the method can solve the problem of system parameter variation and system interfere,and measure the effect of observed interfere.