Induction Motor

No-load Test No-load Test is conducted on the 3-phase induction motor to determine no-load current I0, no-load power factor windage and friction losses, no-load copper loss (I02R), no-load power input P0, no-load resistance R0 and magnetizing reactance X0 etc.

Figure 1: Torque-speed characteristics of an induction motor.

Figure 1: Torque-slip characteristics of an induction motor.

A three phase induction motor is an AC motor consisting of a three-phase winding and are used for applications like exhaust fans, lathes, etc.

When the slip of induction motor is negative i.e. , when the induction motor runs at a speed greater than synchronous speed, the induction motor runs as a generator called induction generator. Working of Induction Generator When a 3-ϕ induction motor is given A.C supply and is mechanically coupled to a prime mover then it

A double cage rotor induction motor gives excellent starting and running characteristics than a deep-bar cage rotor induction motor. It also provides a high starting torque with a low starting current. Therefore it is also known as low-starting current, high starting torque, low slip-motor. The rotor is well designed in order to have high resistance