基于定子磁链补偿的异步电机无速度控制

he system based on the stator-flux-oriented vector control of induction motor not only reduces the dependence of the parameters of the rotor that the rotor-field-oriented control system has, but also eliminates the torque ripple produced by Bang-Bang control in direct torque control, so it is a robust induction motor control strategy. However, since the estimation of the stator flux is closely related with the stator resistance, changes of the stator resistance would influence the performance of the control system. This paper analyzes the influence on flux amplitude and rotating angle caused by changes of the stator resistance, after that a compensation schemes based on the exciter current error is adopt. And a simulation in MatLab/Simulink is built to verify that method, the simulation results show the superiority of the control strategy.