What is a 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.
Where are squirrel cage induction motors used?
Application of Squirrel Cage Induction Motor Centrifugal pumps. Industrial drives (e.g. to run conveyor belts) Large blowers and fans. Machine tools.
What is difference between squirrel cage and induction motor?
The slip ring induction motors have high starting torque with low starting current whereas squirrel cage motors have low starting torque and high starting current. The operation of slip ring induction motor is more sensitive to the fluctuations in supply voltage as compared to the squirrel cage motor.
Why squirrel cage induction motor is most popular in industry?
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.
How many slip rings are there in squirrel cage induction motor?
| Q. | The number of slip rings on a squirrel cage induction motor is usually |
|---|---|
| B. | three |
| C. | four |
| D. | none |
| Answer» d. none |
How do you start a squirrel cage induction motor?
Starting in-rush current in squirrel cage motors is controlled by applying reduced voltage to the stator. These methods are sometimes called as reduced voltage methods for starting of squirrel cage induction motors….Starting of squirrel cage motors
- By using primary resistors.
- Autotransformer.
- Star-delta switches.
Which type of rotor is used in squirrel cage induction motor?
Motors have main two parts in construction: stator and rotor. In these motor, the rotor is squirrel cage type. This rotor is made up from parallel aluminum or copper bars. Rotor conductor bars are short-circuited with two end rings.
Does a squirrel cage motor have slip rings?
The another name of the squirrel cage motor is cage motor. The construction of the slip-ring motor is complicated because it consists slip ring and brushes whereas the construction of the squirrel cage motor is simple.
What are the advantages and disadvantages of squirrel cage induction?
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.
Can induction motor run at synchronous speed?
The Induction Motor cannot run at Synchronous speed because the Slip is never zero in an Induction Motor.
Which starter will give better starting torque to squirrel cage?
The Delta Start Starter is ideally suited for High Starting torque application, where squirrel cage induction motor is selected up to 50HP capacity. The Delta Star Starter also improves the power factor & reduces the demand on power supply system.
Which speed control is possible for squirrel cage induction motor?
out of the several methods of speed control of an induction such as pole changing, frequency variation, variable rotor resistance, variable stator voltage, constant V/F control, slip recovery method etc., constant V/F speed control method is most widely used.
Is squirrel cage motor the same as induction motor?
In simple words, the induction motor which uses a squirrel cage rotor is called squirrel cage induction motor . The reason behind the name “squirrel cage” is because of the type of rotor used in these motors. In these type of motors, the rotor is simplest and most rugged in construction.
What is the purpose of a squirrel cage?
The squirrel-cage rotor is part of a squirrel cage motor, which is often used in self-exciting induction generators and in air conditioning systems.
How does a squirrel cage induction motor work?
A typical squirrel-cage induction motor is shown. The rotor is constructed using a number of single bars short-circuited by end rings and arranged in a hamster-wheel or squirrel-cage configuration. When voltage is applied to the stator winding, a rotating magnetic field is established.
What is a three phase squirrel cage?
The three-phase, squirrel-cage induction motor normally consists of a stator, a rotor, and two end shields housing the bearings that support the rotor shaft. A minimum of maintenance is required with this type of motor because. • the rotor windings are shorted to form a squirrel cage.