Slip Ring Rotor

It is a type of motor where its external circuit is connected using some rings.

Slip ring rotor.

This external circuit helps in developing a high starting torque compared to a squirrel cage type. Moflon has been manufacturing and supplying slip rings and rotary unions to companies contractors and other end users for more than 30 years now. To overcome this problem the slip ring induction motor comes into the picture. It consists laminated cylindrical core which has a semi closed slot at the outer periphery and carries three phase insulated winding.

As the motor accelerates. Slip ring induction motor is one of the types of 3 phase induction motor and is a wound rotor motor type. Adjusting the resistance allows control of the speed torque characteristic of the motor. As a leading designer and manufacturer of slip rings our solutions are applicable even in demanding applications.

A wound rotor motor also known as slip ring rotor motor is a type of induction motor where the rotor windings are connected through slip rings to external resistance. A wound rotor motor uses three slip rings typically made of copper or a copper alloy mounted to but insulated from the motor shaft. The motor which employing the wound rotor is known as a slip ring induction motor or phase wound motor. It can improve mechanical performance simplify system operation and eliminate damage prone wires dangling from movable joints.

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. A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. Since the rotor resistance is high the slip is more thus it s possible to achieve pull out torque even at low speeds. The working principles and stator construction of the slip ring induction motor are exactly the same as that of the squirrel cage motor.

Instead of bars in this motor three windings are used. In slip ring motors the rotor resistance is increased by adding external resistance so the slip is increased. However the rotor construction of the slip ring motor is quite interesting. Each slip ring is connected to one of the three phases of rotor windings.

The slip ring brushes made of graphite are connected to a resistive device such as a rheostat. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals. As the motor reaches its base speed full rated speed after the removal of external resistance and under. This rings attached with high resistance acts as an external circuit for the rotor.