All about Cage Type Induction Motors — Lesson 1

This lesson covers the different types of three-phase induction motors, focusing on the cage type induction motor. It explains the construction of the rotor in a cage type induction motor, which differs from the slip ring type. The lesson also discusses the operation of the cage type induction motor, including how it starts moving and how it produces the same number of poles as the stator. The lesson further explores the advantages and disadvantages of the cage type induction motor, such as its simple construction and lack of maintenance, but inability to improve starting torque. It also highlights an interesting property of the cage type induction motor, which is its ability to work with any number of poles in the stator winding.

Video Highlights

00:36 - Explanation of cage type induction motor
03:16 - Discussion on the operation of cage type induction motor
06:14 - Advantages and disadvantages of cage type induction motor
11:43 - Speed control of the cage type induction motor

Key Takeaways

- The cage type induction motor has a simple rotor construction and requires less maintenance.
- The cage type induction motor cannot improve starting torque by inserting external resistance.
- The cage type induction motor can work with any number of poles in the stator winding.
- The speed of the induction motor is largely determined by the synchronous speed.