Indirect vector control system of induction motor feedback -type

The utility model relates to an indirect vector control system of induction motor feedback -type, this control system includes speed controller, lm parameter divider, the additive operation controller, integral controller, the division operation control unit, tr parameter divider, high cutoff frequency low pass filter, the three -phase is static / double -phase rotatory transformation of coordinates circuit, the static transformation of coordinates circuit of double -phase rotation / three -phase, PWM signal generator is trailed to the electric current hysteresis loop, voltage source inverter and induction motor. Compared with the traditional technology, the utility model discloses no longer need lm parameter multiply operation ware and rotor time constant tr inertial element circuit, but has increased a high cutoff frequency low pass filter, the rotor linkage vector amplitude of having solved the conventional control system is dull rise and dynamic response slow, induction motor starting phase with higher sp