一种永磁同步电机直接转矩控制无传感器运行优化方法

发布时间：2018-04-15 05:35

本文选题：永磁同步电机 + 直接转矩控制　；参考：《中国电机工程学报》2014年30期

【摘要】：为了改进自抗扰控制器(active-disturbance rejection control,ADRC)性能,同时解决永磁同步电机(permanent magnet synchronous motor,PMSM)传统直接转矩控制(direct torque control,DTC)中存在的磁链和转矩脉动大以及机械速度传感器的使用降低系统可靠性等问题,提出一种PMSM DTC无传感器运行优化方法。设计了ADRC速度调节器,阐述了将最小二乘支持向量机(LSSVM)最优回归模型有效嵌入ADRC调节器的实现方法,对ADRC进行优化,以提高ADRC观测精度及系统动态响应速度,改善系统的抗干扰能力;同时,在两相静止坐标系下提出基于扩张状态观测器同时对定子磁链和转速进行估计的方法,以降低磁链和转矩脉动,同时实现无传感器运行。仿真和实验结果验证了该方法的可行性和有效性。
[Abstract]:In order to improve the active-disturbance rejection control (ADRCs) performance of the active disturbance rejection controller (ADRC), and to solve the problems of large flux and torque ripple in the traditional direct torque control DTCs of permanent magnet synchronous motor permanent magnet synchronous motor (PMSM), and the use of mechanical speed sensors to reduce the reliability of the system, etc.A sensorless operation optimization method for PMSM DTC is proposed.The ADRC speed regulator is designed, and the realization method of embedding the optimal regression model of LSSVM into the ADRC regulator is described. The ADRC is optimized to improve the observation accuracy of ADRC and the dynamic response speed of the system.In order to reduce the flux and torque ripple and realize sensorless operation, a new method based on extended state observer is proposed to estimate stator flux and speed simultaneously in two-phase stationary coordinate system.Simulation and experimental results show that the method is feasible and effective.
【作者单位】：华北电力大学电气与电子工程学院;
【基金】：中央高校基本科研业务费专项基金资助(2014MS89)~~
【分类号】：TM341

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