基于改进磁链位置判断方法的直接转矩调速系统

A direct torque speed control system based on improvedflux-linkage position judgment method

异步电动机直接转矩控制技术控制性能优异,但因定子磁链观测算法复杂,对控制器性能要求较高,阻碍了其广泛运用。针对这一问题,设计了一种判断定子磁链所在扇区位置的简便方法,可在一定程度上减小定子磁链扇区位置判断的复杂度和计算量,从而降低对控制器的性能要求。经Matlab/Simulink仿真验证,该方法能够正确判断定子磁链的位置,相比传统方法,在保证稳定性和控制精度的前提下能够获得更快的响应速度,从而降低系统成本。

Although the direct torque control technology of asynchronous motor has excellent control performance,its wide application is limited due to its complex stator flux observation algorithm and the high-performance requirements of the controller.In order to solve this problem,a simple method for judging the position of the stator flux sector is designed,which can reduce the complexity and calculation amount of the stator flux sector position judgment,and reduce the performance requirements of the controller.The simulation results of Matlab/Simulink show that this method can correctly determine the position of stator flux linkage.Compared with the traditional method,it can generate a faster response speed in accordance with the requirements of the stability and control accuracy,the system cost.