Developed Starting Torque in Single Phase Induction Motor
We Know Single Phase Induction Motor is not Self started. But we can overcome it by converting it into two phase induction motor. For this phenomena The Stator of a single phase motor is provided with an extra Winding, known as Starting Winding. Which is added with its main or running winding. This two winding are spaced 90 degree with each other and connected in parallel across the single phase supply. Which is shown in following figure: So that the phase difference between the currents in two stator winding is very large, then this motor behaves as a two phase induction motor.So then we get a resultant flux which made a starting torque and our motor is rotateting