Slip Ring Rotor Of Induction Motor

It is not advised to start a slip ring induction motor with its rotor terminals shorted.

Slip ring rotor of induction motor.

This external circuit helps in developing a high starting torque compared to a squirrel cage type. 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. As the motor accelerates.

Production of high starting torque with slip ring induction motor. The rotor is wound for the same number of poles as that of the stator. It consists laminated cylindrical core which has a semi closed slot at the outer periphery and carries three phase insulated winding. It is a type of motor where its external circuit is connected using some rings.

If the slip motor is started with all the slip rings or the rotor terminals shorted like a normal induction motor then it suffers extremely high locked rotor current ranging up to 1400 accompanied with very low locked rotor torque as low as 60. Adjusting the resistance allows control of the speed torque characteristic of the motor. 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.

The slip ring induction motor has two distinctly separate parts one is the stator and other is the rotor. A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. It can improve mechanical performance simplify system operation and eliminate damage prone wires dangling from movable joints. The working principles and stator construction of the slip ring induction motor are exactly the same as that of the squirrel cage motor.

Slip ring induction motor is one of the types of 3 phase induction motor and is a wound rotor motor type. The motor which employing the wound rotor is known as a slip ring induction motor or phase wound motor. However the rotor construction of the slip ring motor is. To overcome this problem the slip ring induction motor comes into the picture.

The stator circuit is rated as same in the squirrel cage motor but the rotor is rated in frame voltage or short circuit current. Characteristics of slip ring induction motor. This rings attached with high resistance acts as an external circuit for the rotor.