基于EKF的低速永磁电机控制系统建模与分析

作者：俞佳琦,叶云岳,范承志 日期：2009-02-23/span> 浏览：3779 查看PDF文档

基于EKF的低速永磁电机控制系统建模与分析

俞佳琦,叶云岳,范承志
(浙江大学 电气工程学院,浙江 杭州 310027)

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。
关键词：广义卡尔曼滤波;电流环;速度环；空间矢量脉宽调制
中图分类号：TP273文献标识码：A文章编号：1001-4551(2009)02-0031-03

Simulation and analysis of a low-speed drive system for permanent magnetic motors based on EKF
YU Jia-qi , YE Yun-yue, FAN Cheng-zhi
(College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China)
Abstract: 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.
Key words: extended Kaman filter(EKF); current loop; speed loop; space vector pulse width modulation(SVPWM)
参考文献(References):
［1］唐任远.现代永磁电机理论与设计［M］.北京:机械工业出版社，2000.
［2］李永东.交流电机数字控制系统［M］.北京：机械工业出版社，2002.
［3］BOLOGNANI S, OBOE R, ZIGLIOTTO M. Sensorless full-digital PMSM drive with EKF esimation of speed and rotor position[J]. IEEE Transactions on Industrial Electronics,1999,46(1):184-191.
［4］ANDREESCU G D. Nonlinear Observer for Position and speed Sensorless Control of Permanent Magnet Synchronous Motor Drives［C］// OPTIM 98. Proceeding of the 6th International Conference, Brasov:［s.n.］, 1998:473-478.
［5］JONES L A. LANG J H. A state observer for the permanent magnet synchronous motor［J］. IEEE Transactions on Industrial Eectronics,2004,36(3):374-382.
［6］袁泽剑，杨耕，钟彦儒.永磁同步电机无位置传感器矢量控制系统的研究［J］. 电气传动自动化，2000，22(4):21-23.
［7］许大中.交流电机调速理论［M］. 杭州:浙江大学出版社，1991.
［8］王微子.基于DSP的永磁同步电动机转子初始位置检测［J］. 中小型电机，2004，31(1):25-27.
［9］范雯，范承志，叶云岳.不对称结构双稳态永磁驱动器研究［J］.机电工程，2007，24（12）：41-43.