What are the types of rotor construction?
There are two types of induction motor rotors:
- Squirrel-cage rotor or simply cage rotor.
- Phase wound or wound rotors. The motors that use this type of rotor are known as Slip-ring rotors.
What are the types of induction motor with respect to its rotor construction?
Depending upon the type of rotor construction used the three phase induction motor are classified as:
- Squirrel cage induction motor.
- Slip ring induction motor or wound induction motor or phase wound induction motor.
What is the construction of squirrel cage rotor?
A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor. It consists of a cylinder of steel laminations, with aluminum or copper conductors embedded in its surface.
What is a 3 phase squirrel cage motor?
A 3 phase squirrel cage induction motor is a type of three phase induction motor which functions based on the principle of electromagnetism. It is called a ‘squirrel cage’ motor because the rotor inside of it – known as a ‘squirrel cage rotor’ – looks like a squirrel cage.
What are two types of induction motors?
Starting. There are three basic types of small induction motors: split-phase single-phase, shaded-pole single-phase, and polyphase. In two-pole single-phase motors, the torque goes to zero at 100% slip (zero speed), so these require alterations to the stator such as shaded-poles to provide starting torque.
What are the two types of 3 phase induction motor?
The two types of three-phase induction motors are- squirrel cage and slip ring motors. The features which make the squirrel cage motors widely applicable are mainly their simple design and rugged construction. With external resistors, the slip ring motors can have high starting torque.
What is the difference between squirrel cage and wound rotor?
Difference squirrel cage rotor and wound or slip cage rotor This rotor is in the form of 3 phase winding. In squirrel cage rotor no slip rings or brushes. In wound or slip rotor slip rings and brushes are used. It has a simple construction.
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.
What are types of induction?
There are basically two types of induction motor. The types of induction motor depend upon the input supply. There are single phase induction motors and three phase induction motors. Single phase induction motors arenot a self-starting motor, and three phase induction motor are a self-starting motor.
What is construction difference between slip ring and squirrel cage induction motor?
1. The major difference between them is that the slip ring’s motor comes with an external circuit that controls the speed of a motor. On the other hand, the squirrel cage motor does not have any external circuit and it is not possible to add one since the motor bar is spotted permanently at the end of that ring.
What’s the difference between squirrel cage and slip ring 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. Slip-ring motor has smooth acceleration under heavy loads as compare to the squirrel cage motor.
What type of rotor is most commonly used in an induction motor?
squirrel cage rotor
The most common type of rotor is the squirrel cage rotor. The rotor comprises a cylindrical laminated core with axially placed parallel slots for carrying the conductors. Each slot carries a copper, aluminum, or alloy bar. The rotor of three-phase induction motors frequently is likewise implied as an anchor.
Why squirrel cage rotor is used in induction motor?
Squirrel cage motors maximize electromagnetic induction by utilizing rotor bars to interact with the stator’s EMF. The stator usually contains windings of wire which carry an AC current; this current changes in sync with a sinusoidal curve (or “alternates”), which changes the current direction in the wire windings.
What are the two types of induction?
What is difference between squirrel cage and wound rotor?
What is the difference between slip ring rotor and squirrel cage rotor?
The slip ring motor has brushes for transferring the power whereas the squirrel cage motor is brushless. The copper loss in the phase wound motor is high as compared to squirrel cage motor. The efficiency of the slip ring motor is low whereas the squirrel cage motor has high efficiency.