Slip Ring Induction Motor Rotor

As the motor accelerates.

Slip ring induction motor rotor.

It is most widely used for industrial applications due to its self starting attribute. Wound rotor motors can be started with low inrush current by inserting high resistance into the rotor circuit. It consists laminated cylindrical core which has a semi closed slot at the outer periphery and carries three phase insulated winding. Squirrel cage rotor wound type rotor or slip ring type rotor squirrel cage rotor in this type.

The rotor is wound for the same number of poles as that of the stator. Adjusting the resistance allows control of the speed torque characteristic of the motor. Slip ring induction motor is one of the types of 3 phase induction motor and is a wound rotor motor type. This external circuit helps in developing a high starting torque compared to a squirrel cage type.

Rotor as the name suggests it is a rotating part of an electrical machine in which current is induced by transformer action from rotating magnetic field. The motor which employing the wound rotor is known as a slip ring induction motor or phase wound motor. In the induction motors used in lift and hoists you will see a type of rotor called a slip ring rotor whereas in most of the other applications you will see a simpler squirrel cage type of rotor. The main difference in a slip ring induction motor is on the rotor construction and usage.

This rings attached with high resistance acts as an external circuit for the rotor. It is a type of motor where its external circuit is connected using some rings. The stator of slip ring induction motor is very much the same as that of the squirrel cage induction motor but the construction of its rotor is very much different stator winding can be either star or delta connected depending upon the design. Induction motors have been ruling the industrial world for many decades.

The slip ring induction motor could be used for industrial wires where variable speed and high starting torque are prime requirements. Induction motor rotor is of two types. In a version of the ac induction motor referred to as a wound rotor motor slip rings are used not for transferring power but for inserting resistance into the rotor windings a wound rotor motor uses three slip rings typically made of copper or a copper alloy mounted to but insulated from the motor shaft. An induction motor is an electrical device that converts electrical energy into mechanical energy.