Speed Control AC Induction Motor

SPEED CONTROL AC INDUCTION MOTOR(OPEN/CLOSE LOOP) In some applications speed control of acinduction motor is required. The speed of an acmotor can be controlled by varying either theamplitude or the frequency of its supplyvoltage, or both. The variable voltage, fixedfrequency technique has the advantage of itslower cost. When the close loop monitorsystem is used.