What is Skewing of Rotor Slots and its Advantages of Induction Motor ?

What is Skewing of Rotor Slots?

As shown in the above picture, the rotor bars of an induction motor are not parallel with the shaft and the bars are skewed. The rotor bars are skewed purposefully to get the following performance advantages.

Advantages of Skewing of Rotor of Induction Motor

There are following advantages of skewing of rotor slots.

  1. Increased Starting Torque
  2. Prevents Cogging
  3. Prevents Crawling
  4. Reduce Magnetic Hum