改进型磁链观测器在直接转矩控制软起动系统中的应用

The application of improved flux observer in direct torque control soft start system

提出一种带校正环节的改进型磁链观测器,并将其应用到异步电动机软起动控制系统中。通过Matlab/Sirnulink建立系统的仿真模型进行仿真实验。结果表明,采用改进型积分器的磁链观测器降低了磁链观测的误差,改善了直接转矩控制软起动系统的动态性能。

This paper prososed a improved stator flux observer with correction element and its application to soft start induction motor control system. The simulation model was established and simulation experiment was carried out under the Matlab/ simulink. The results show that the modified integrator flux observer reduces the flux observer error and improve the soft-start of direct torque control system dynamic performance.