The squirrel cage Induction Motor makes an excellent generator when it is driven above its synchronous speed. … The Induction Motor becomes a generator when it is connected to an electrical power system and then driven above its synchronous speed by some prime mover.
What is squirrel cage induction generator?
Self excited squirrel cage induction generator (SEIG), which uses an excitation capacitor, is used widely to convert mechanical wind energy to electricity, due to their low cost, small size, no need of separate dc source and brushes.
Can induction motors generate electricity?
An induction generator produces electrical power when its rotor is turned faster than the synchronous speed. … In normal motor operation, the stator flux rotation is faster than the rotor rotation.
Why mostly the squirrel cage type induction motor is used?
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.
How does squirrel cage induction motor work?
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.
Why do they call it a squirrel cage?
05/07/2014. Whoever coined the phrase “squirrel cage” to refer to a fan blower motor cage was on to something. On May 5, Dan Christeson, a mechanic in the Mason City maintenance garage, turned on the fan blower in one of the Iowa DOT’s Chevy Colorado trucks. To his surprise, the vehicle made a horrible noise.7 мая 2014 г.
What is difference between squirrel cage and slip ring induction?
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.
Which motor is best for generate electricity?
If it is a small power experiment, a stepper motor generates good power at lower rpm (revolutions per minute). Stepper motors can be obtained from old broken printers and scanners. This is one instructable that makes a light glow with stepper motor generator.
Can a AC motor generate electricity?
You can use just about any motor to generate electric current, if it is wired correctly and you follow specific rules for its use. Modern AC induction motors are quite simple to wire as alternating current generators, and most will begin generating electricity the first time you use them.
Can I use an AC motor for a wind turbine?
Simply take any old AC motor, add magnets to the rotor, put it in the wind and you have power. A fan motor, no matter if its a box fan, table fan or a huge gigantic barn fan, will work perfectly well for this. Take any AC motor with fan blades on it.4 мая 2012 г.
Is a squirrel cage motor AC or DC?
A squirrel-cage rotor is the rotating part of the common squirrel-cage induction motor. … In operation, the non-rotating stator winding is connected to an alternating current power source; the alternating current in the stator produces a rotating magnetic field.
Why starter is used in induction motor?
The three phase induction motors are self-starting due to rotating magnetic field. But the motors show tendency to draw very high current at the time of starting. … Hence there should be a device which can limit such high starting current. Such a device which limits high starting current is called a starter.11 мая 2017 г.
How does an induction motor start?
When the supply is connected to the stator of a three-phase induction motor, a rotating magnetic field is produced, and the rotor starts rotating and the induction motor starts. … At the time of starting, the motor slip is unity, and the starting current is very large.
Is a 3 phase motor AC or DC?
Three-phase motors are a type of AC motor that is a specific example of a polyphase motor. These motors can be either an induction motor (also called an asynchronous motor) or a synchronous motor.
Which type of motor has high starting torque?
DC Series motor has high starting torque. We can not start the Induction motor and Synchronous motors on load, but can not start the DC series motor without load. DC motor has high starting torque.In a series motor the same current flows through the armature and the field winding.
Which type of induction motor is best for EMF injection method?
10. Which type of Induction motor is best for e.m.f injection method? Explanation: E.M.F injection method is used to control the speed of Induction motor. It is only applicable for WRIM because WRIM rotor consists of copper windings connected in star connection.