How do you turn a squirrel cage into a slip ring?
- If you want to convert the slip ring to squirrel cage then you should short the slip rings.
- Beacuse what is happening is that, at the starting of motor, the resistance of rotor will be low and current will be high which will burn the coil.
Do squirrel cage induction motors have slip rings?
The motor whose rotor is wound type such type of motor is called slip ring induction motor, whereas the squirrel cage motor, has a squirrel cage type rotor. For starting the slip ring motor the rotor resistance starter is used, whereas the slip ring motor does not require any starter.
Why is there a need for slip ring induction motor over squirrel cage induction motor?
Induction motors generally will have low starting torque compared to dc series motor. Slip ring induction motor have big advantage of having high starting torque compared to squirrel cage motor. Therefore slip ring induction motors are generally employed where load requires high starting torque or good speed control.
Why do they call it a squirrel cage motor?
Squirrel cage motors are a subclass of induction motors, which harness electromagnetism to generate motion. They are so-called “squirrel cage” motors because the shape of their rotor – the inner component connected to the output shaft – looks like a cage.
What is a slip ring motor used for?
A slip ring is an electromechanical device that allows the transmission of power and electrical signals from a stationary to a rotating structure. A slip ring can be used in any electromechanical system that requires rotation while transmitting power or signals.
What is the importance of slip in an induction motor?
Slip of induction motor plays an important role in the operation of the induction motor. The torque produced by the induction motor is directly proportional to induction motor slip. At no-load induction motor requires small torque to meet with the frictional, iron and other losses, therefore slip is small.
What is the difference between a squirrel cage motor and a wound rotor motor?
Rotor itself automatically adjusts to the number of poles as that of stator. Squirrel cage motor consists of cylindrical rotor having skewed slots in which aluminum bars are placed. No windings are present in squirrel cage rotor.
What’s the difference between slip ring and squirrel cage induction motor?
1 The motor whose rotor is wound type such type of motor is called slip ring induction motor, whereas the squirrel cage motor, has a squirrel cage type rotor. 2 The rotor of the slip ring motor has a cylindrical core with parallel slots, and each slot consists each bar. 3 The slip ring motor is also called phase wound rotor.
What kind of motor is a squirrel cage?
The motor which employing squirrel cage type rotor is known as the squirrel cage motor. The construction of the rotor is rugged and simple. The rotor of the motor consists the cylindrical laminated core having semi-closed circular slots and short circuit at each end by copper or aluminium ring, called short circuiting ring.
What’s the difference between a slip ring and a squirrel cage?
The efficiency of the slip ring motor is low whereas the squirrel cage motor has high efficiency. The speed of the phase wound motor is controlled by using the resistance circuit. It is impossible to control the speed of the squirrel cage motor. The slip ring motor has low power factor as compared to squirrel cage motor.
When to use a slip ring induction motor?
Use in hoist, cranes, elevator where high torque is required. The motor which employing the wound rotor is known as a slip ring induction motor or phase wound motor. It consists laminated cylindrical core which has a semi-closed slot at the outer periphery and carries three-phase insulated winding.