O'Reilly logo

Electrical Machines, 2nd Edition by Smarajit Ghosh

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

8 Polyphase Induction Motors

The basics as well as the details of the structures and the types of rotors of polyphase induction motors have been introduced in Chapter 3. The concept of rotating magnetic field in the air gap has also been introduced in the chapter. In induction motors, we need to apply a three-phase supply at the stator, whereas no supply is required at the rotor. That is why the three-phase induction motors are known as singly excited motors. Since these types of motors rotate at a speed below the synchronous speed (known as asynchronous speed), they are also called asynchronous motors. This chapter introduces the details of the theoretical aspects of the induction motors.

8.1 ROTOR CURRENT

If the electromagnetic force (emf) ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required