V/F CONTROL METHOD FOR SUPPRESSING CURRENT OSCILLATION OF INDUCTION MOTOR

摘要

A V/F control method for an induction motor, comprising: extracting a reactive current and an active current, and respectively differentiating same to obtain the differentiated reactive current and the differentiated active current; respectively multiplying the differentiated reactive current and the differentiated active current by a first coefficient and a second coefficient; obtaining the sum of the reactive current and the active current which have been differentiated and respectively multiplied by the first coefficient and the second coefficient; conducting low-pass filtering on a sum result, so as to obtain a compensation quantity; and superposing the compensation quantity to an original specified angular frequency, so as to conduct V/F control.