Working of Three Phase Induction Motor (Contd.) — Lesson 3

This lesson covers the concept of the equivalent circuit of an induction motor. It delves into the intricacies of the stator and rotor of a three-phase induction motor, explaining how the rotor's speed and the stator's observation of the rotor field affect the motor's operation. The lesson also discusses the concept of 'slip' and how it influences the induced voltage and rotor current. It further explains the concept of a 'fictitious motor' and how imagining such a motor can help understand the actual motor's functioning. The lesson concludes by explaining how to calculate the torque of the induction motor and the power flow in the motor's circuit.

Video Highlights

02:15 - Discussion on the concept of 'slip' and its impact on induced voltage and rotor current
04:39 - Explanation of how the rotor's resistance and leakage reactance affect the motor
14:15 - Discussion on how to calculate the torque of the induction motor
19:01 - Explanation of the power flow in the motor's circuit

Key Takeaways

- The concept of 'slip' is vital as it influences the induced voltage and rotor current.
- The rotor's resistance and leakage reactance significantly impact the motor.
- The torque of the induction motor can be calculated using the motor's equivalent circuit.