Slip Ring Rotor Construction

The rotor windings are connected in star.

Slip ring rotor construction.

The outer periphery of the rotor has a semi closed slot which carries a 3 phase insulated windings. Slip ring induction motor is one of the types of 3 phase induction motor and is a wound rotor motor type. Slip ring induction motor construction. The main difference in a slip ring induction motor is on the rotor construction and usage.

The another name of the squirrel cage motor is cage motor. The phase wound rotor is also called as slip ring rotor. These motors have the advantage of adopting any number of pole pairs. In this article we shall discuss this motor s construction working speed control advantages disadvantages and applications.

The working principles and stator construction of the slip ring induction motor are exactly the same as that of the squirrel cage motor. The construction of slip ring induction motor is same as other induction motors. Rotor wound rotor. Every motor has main two parts.

The absence of slip ring and brushes make the construction of squirrel cage three phase induction motor very simple and robust and hence widely used three phase induction motor. 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. The below diagram shows a squirrel cage. However the rotor construction of the slip ring motor is quite interesting.

The slip ring motor is also called phase wound rotor. Instead of bars in this motor three windings are used. Some changes in the stator may be encountered when a slip ring motor is used in a cascaded system as the supply for the slave motor is controlled by the supply from the rotor of the other slip ring motor with external resistance mounted on its rotor. The stator has three phase winding on it.

It is a type of motor where its external circuit is connected using some rings. The slip ring induction motor is shown in the figure below. This rings attached with high resistance acts as an external circuit for the rotor. It consists of a cylindrical core which is laminated.

To overcome this problem the slip ring induction motor comes into the picture. Slip ring rotor or wound rotor or phase wound rotor. Because of various advantages like low initial current high starting torque and improved power factor it is used in applications that require high torque cranes and elevators. What is slip ring induction motor.