Speed control of three phase induction motor using PMW inverter / Mohd Fadzlan Ramli

Pulse Width Modulation (PWM) technique to control the speed of three phase induction motor was analyzed. The induction motor is a type of AC motor whereby power is provided to rotor by technique of electromagnetic induction by way of. Controlling the speed of induction motor is mostly which in the motion industry appliances. PWM inverter control technique was used to vary the three phase induction motor speed by varying frequency applied to inverter for three phase induction motor. PWM is the efficient method of providing the quantity of electrical source between fully off state and fully on state. MOSFET and IGBT are used as the inverter switching element that provides a smooth way to control the frequency, voltage magnitude and current supply to the motor. Simulation on this method was carried out by using the software for simulation of power electronic and motor drive module called PSIM. Results obtained from the simulation indicated that PWM inverter is capable for controlling the speed of three phase induction motor.