ARRANGEMENT FOR SPEED REGULATION OF INDUCTION MOTOR

摘要

detecting the velocity error of an induction motor for velocity proportional integration control; detecting the rotor magnetic flux error of the induction motor for magnetic flux proportional integration control; operating the slip angular velocity of the induction motor; operating d-d stator current instruction value to produce the phase current instruction value of the induction motor; detecting the offset between the phase current instruction value and the tri-state current value of the induction motor for current proportional integration control, comparing a delta wave and the phase current value to produce a basic pulse width modulation signal; distributing the basic pulse width modulation signal; and controlling the induction motor using the distributed signal, thereby enhancing the driving efficiency of the induction motor.