摘要
为了实现大转矩、低转速永磁电机的变频控制,提出了一种基于卡尔曼滤波原理的调速系统。在系统中,采用卡尔曼滤波算法对电机位置、转速和d-q轴电流进行了估计。在广义卡尔曼滤波(EKF)的基础上,系统的电流环和速度环采用PI控制,电机采用空间矢量脉宽调制(SVPWM)矢量控制方法。利用Matlab/Simulink对整个系统进行了仿真建模,并对仿真结果进行了分析。通过对误差的分析以及参数鲁棒性的分析,可以证明卡尔曼滤波算法适用于低速的永磁电机调速系统。
Aiming at controling large-torque and low-speed permanent magnetic motors, a kind of drive system based on extended Kaman filter（EKF） was introduced. The EKF was adopted to the estimate of motor speed, motor position and currents in d-q axes in the system. Besides the EKF, PI control was used in current loop and speed loop and the space vector pulse width modulation（SVPWM） was used as motor control strategy. The whole system was simulated using Matlab/Simulink and the data gained from the simulation was analyzed. Through the analysis of error and stablity in parameters, it is confirmed that the EKF is suitable for the drive system of the low-speed permanent magnetic motors.
出处
《机电工程》
CAS
2009年第2期31-33,共3页
Journal of Mechanical & Electrical Engineering
关键词
广义卡尔曼滤波
电流环
速度环
空间矢量脉宽调制
extended Kaman filter（EKF）
current loop
speed loop
space vector pulse width modulation（SVPWM）
