STATIC ROTOR RESISTANCE CONTROL OF INDUCTION MOTOR

Abstract

this thesis the hardware prototype for static rotor resistance control is developed. Speed of the three phase wound rotor induction motor is controlled by varying the rotor resistance. The variation of rotor resistance is done by controlling the MOSFET using pulse width modulation (PWM). The switching action of MOSFET is controlled by the arduino microcontroller. The switching gate pulse is generated by the arduino microcontroller, which controls the duty ratio of MOSFET switch. The duty ratio of switch varies the rotor resistance and controls the wound rotor induction motor speed. PSIM9.1.1 is used for the simulation purpose and validates the results in open loop as well as closed loop control of three phase induction motor.