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10. Realize the principle and construction of 3-phase induction motor.

10.3. List various types of induction motor with their applications.

types-induction-motor

There are mainly two types of induction motor on the basis of power supply, Single Phase Induction Motor and Three Phase Induction Motor. As their name suggests, 1 phase AC power supply is extended to single phase induction motor while three phase induction motor is connected to 3 phase AC power supply.

Types of Single Phase Induction Motor:

Again, single phase induction motor may be classified on the basis of their construction and starting methods. On this basis, they can be further categorized into following types:

  • Split Phase Induction Motor
  • Capacitor Start Induction Motor
  • Capacitor Start Capacitor Run Induction Motor
  • Shaded Pole Induction Motor
Types of 3 Phase Induction Motor:

A three phase induction motor (IM) has two major components, Stator and Rotor. Stator is the stationary part whereas Rotor is rotating part. Load is coupled to the rotor shaft of the motor. Three phase armature winding is wound on the stator. When balanced three phase current flows through this winding, a constant amplitude rotating magnetic field is created in the air gap. This armature winding is connected to the 3 phase power supply and carried the load current.

Based on the rotor construction, it can be of two types: Squirrel Cage Rotor and Wound Rotor. On this ground, IM is also classified as

  • Squirrel Cage Induction Motor
  • Wound Rotor or Slip Ring Induction Motor
Types of single phase induction motors

The single-phase induction motor is started by using some methods. Mechanical methods are not very practical methods that is why the motor is started temporarily by converting it into a two-phase motor.

Single-phase induction motors are classified according to the auxiliary means used to start the motor. They are classified as follows:

  1. Split-phase motor
  2. Capacitor-start motor
  3. Capacitor-start capacitor-run motor
  4. Permanent-split capacitor (PSC) motor
  5. Shaded-pole motor
Types of three phase induction motor rotor

There are two types of induction motor rotors:

  1. Squirrel-cage rotor or simply cage rotor.
  2. Phase wound or wound rotors. The motors that use this type of rotor are known as Slip-ring rotors.



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