A CAPACITOR START 3-PHASE INDUCTION-MOTOR

A scheme for fast starting of three phase induction motors is proposed . This scheme is based on starting the motor from a single phase suppl y with the help of a phase balancer properly selected for achieving ma ximum starting torque. As the speed reaches a predetermined value, a s imple centrifugal switch is used to reconnect the motor to the three p hase supply. The feasibility of the proposed scheme is proven through the development of a rigorous state space mathematical model and its a ssociated digital simulation, followed by experimental verification.