Starting Torque and Phase Splitting — Lesson 3

This lesson covers the fundamental concepts of single phase induction motors. It delves into the intricacies of the motor's operation, explaining how a single phase induction motor, with only one winding on the stator, can only have running torque and no starting torque. The lesson further elaborates on the equivalent circuit of the motor when it runs on a single winding. It also discusses the incorporation of starting torque with the help of an auxiliary winding. The lesson concludes with an explanation of how the starting torque of the induction motor can be created by phase splitting the stator impedance of the auxiliary winding with respect to the primary winding.

Video Highlights

00:21 - Explanation of running torque and starting torque
02:55 - Explanation of the role of auxiliary winding
23:46 - Analysis of the starting torque of the induction motor

Key Takeaways

- A single phase induction motor with only one winding on the stator can only have running torque.
- The equivalent circuit of the motor when it runs on a single winding is developed by introducing an imaginary coil.
- The starting torque in a single phase induction motor can be incorporated with the help of an auxiliary winding.
- The starting torque of the induction motor can be created by phase splitting the stator impedance of the auxiliary winding with respect to the primary winding.