Table of Contents
How do you turn a squirrel cage into a slip ring?
In slip ring type ,the copper conductors are used which are wounded on the rotor slots. These conductors are taken out from rotor and are connected to slip rings though carbon brushes. From the above we can conclude that internal structure of slip ring rotor can’t be converted into squirrel cage construction.
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.
How many slip rings does a squirrel cage motor have?
The rotor is wound for the same number of poles as in the stator and the free end of these windings are connected to three insulated slip rings fixed on the shaft.
What is the main difference between slip ring and squirrel cage 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.
Why squirrel cage rotor is used in induction motor?
When a 3 phase supply is given to the stator winding it sets up a rotating magnetic field in space. This rotating magnetic field induces the voltage in rotor bars and hence short-circuit currents start flowing in the rotor bars. …
How do slip rings work?
HOW DOES A SLIP RING WORK? A slip ring passes electrical signals and power across a rotating interface using sliding electrical contacts. These contacts are typically a rotating ring and a stationary brush, or wiper, that slides along the ring surface during rotation.
What is 3 phase squirrel cage induction?
3 phase squirrel cage Induction Motor is one of the most popular types of AC electric motor which achieve the electromechanical energy conversion through stator and squirrel cage rotor by electromagnetic induction. That’s why it’s called squirrel cage induction motor.
How does a squirrel cage induction motor?
Squirrel cage motors maximize electromagnetic induction by utilizing rotor bars to interact with the stator’s EMF. This rotating EMF produces an opposing voltage and EMF in the rotor bars, thus pushing the rotor around, generating rotational motion.
What is the difference between slip ring induction motor and squirrel cage?
It increases the rotor resistance due to the increased length of the rotor bar conductors. 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.
What is a squirrel cage motor?
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 disadvantages of a slip ring induction motor?
Cost is high ( 3 times compare to squirrel cage) There is wear and tear. Note: In Slip ring Induction Motor, Stator is wound for 3 phase winding. But rotor can be wound with any number of phases except single phase. But in actual practice, in order to get symmetry placement of windings.
What is a slip ring motor?
Definition of Slip Ring Motor 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. The rotor is wound for the same number of poles as that of the stator.