Research of Control Method of Soft Starting for Asynchronous Motor and Its Simulatio

Through analysis of mechanical chracterictics of constant load and pump load,the paper established mathematic model of torque slope and current-limited staring mode for asynchronous motor.In the algorithm of torque slope and current-limited starting mode,closed torque loop adopted traditional control of PID,closed current-limited loop used fuzzy control,and applied Matlab to simulate.The simulation result showed that the mathematic model of torque slope and current-limited starting mode were correct and effective,control mode achieved preconcerted effect.