What is the difference between squirrel cage induction motor and slip ring induction motor?

What is the difference between squirrel cage induction motor and slip ring induction motor?

Key Differences Between Slip Ring & Squirrel Cage Induction Motor. 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. The starting torque of the slip-ring motor is high, whereas in squirrel cage motor it is low.

What are the applications of squirrel cage induction motor with slip ring induction motor?

Squirrel cage induction motors are commonly used in many industrial applications. They are particularly suited for applications where the motor must maintain a constant speed, be self-starting, or there is a desire for low maintenance. These motors are commonly used in: Centrifugal pumps.

What are the advantages and disadvantages of wound rotor over squirrel cage rotor in induction motor?

As a result the inrush current is reduced. Another important advantage over squirrel-cage motors is higher starting torque. The speed and torque characteristics of a wound-rotor motor can be adjusted by changing the external resistance, unlike a squirrel cage motor which has a fixed characteristic.

What are the advantages of a wound rotor motor over a squirrel cage motor?

The wound-rotor motors have the following advantages over the squirrel cage motors : (i) High starting torque and low starting current. (ii) Smooth acceleration under heavy load. (iii) No abnormal heating during starting.

Why it is called squirrel cage induction 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 are the advantages and disadvantages of squirrel cage induction motor?

Squirrel Cage Induction motors are cheaper in cost compared to Slip Ring Induction motors. Requires less maintenance and rugged construction. Because of the absence of slip rings, brushes maintenance duration and cost associated with the wear and tear of brushes are minimized.

What are the applications of slip ring induction motor?

Slip ring induction motor is one of the types of 3-phase induction motor and is a wound rotor motor type. 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 are advantages of cage motors?

What is the limitation of squirrel cage induction motor?

Disadvantages of squirrel cage induction motor : High starting current. Speed control is not possible in a squirrel cage induction motor., in short, no speed regulation. Sensitive to change in supply voltage. More sensitive to the supply voltage regulation fluctuations.

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.

Which is better slip ring or squirrel cage induction motor?

Efficiency and power factor of slip ring motor is lower compared to 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.

What are the advantages of slip ring induction?

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. They are employed in hoists, elevators, compressors, printing presses, large ventilating fans,…

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.

What are the disadvantages of a squirrel cage motor?

Some of disadvantages or demerits of squirrel cage induction motors are listed below: Main disadvantage of squirrel cage induction motor is that they have poor starting torque and high starting currents. Starting torque will be in the order of 1.5 to 2 times the full load torque and starting current is as high as 5 to 9 times the full load current.