How induction generator works?

Question

How induction Generator works?

Answer 1

A device that converts the mechanical energy of rotation into electricity based on electromagnetic induction. An electric voltage (electromotive force) is induced in a conducting loop (or coil) when there is a change in the number of magnetic field lines (or magnetic flux) passing through the loop. When the loop is closed by connecting the ends through an external load, the induced voltage will cause an electric current to flow through the loop and load. Thus rotational energy is converted into electrical energy.

In fact, an induction generator may operate as a motor or a generator. For instance, a standard, 3 phases, AC motor may be powered from the 50 Hz grid, with the motor speed "slipping" at less than for 50 Hz synchronism. If this motor is itself forced to rotate at more than for 50Hz synchronism by a rotating power source, (e.g. a diesel engine or wind turbine), while connected to the grid, it delivers current to the grid as a generator. The current flow is proportional to the slip, i.e. the small difference, 3%, between synchronised rpm and the actual rpm. This slip is too small to notice as a speed change of a wind turbine rotor, so induction generators are classed, somewhat erroneously, as fixed-speed generators. This type of generator is very simple, rugged, and relatively cheap. Usually it is "excited" into operation.


hope this helps dude

Answer 2

Let's look at the operation of an induction generator in transition from a motor to a generator.

An AC voltage applied to the stator of an induction generator sets up a rotating magnetic field which induces current in the rotor proportional to the slip speed frequency. This generates a corresponding field that pulls the rotor with the rotating field (it's acting as a motor).

If you drive the shaft, the slip frequency is reduced and becomes zero at synchronous speed thus reducing the induced rotor current to zero (at which point there is no net torque). If you continue driving the rotor above synchronous speed, there now will be slip in the opposite direction, generating rotor current which creates a rotating magnetic field that pushes on the stator field rather than being pulled by it. This creates a stator voltage the pushes current out of the stator windings against the applied voltage. The device is now acting as a generator.

Note that a pure induction generator must have a source of AC voltage to work against at all times since that source determines the frequency and voltage of the output. The generator is always operating above synchronous speed and has no specific output frequency of its own.

An interesting feature of the induction generator is that is doesn't require speed regulation to synchronize with the line frequency. As long as the generator is above synchronous speed it will output power in synchronism with the line voltage and absorb all the shaft power applied to it.

https://www.electrikals.com/

Answer 3

Induction
This is how an electric generator works. The phenomenon is known as electromagnetic induction and is explained by ... turn...
www.physics.sjsu.edu/becker/physics51/...

Answer 4

at the same time as an induction motor is made to run at great-synchronous speed it acts like a generator sending ability from the finest-mover to the device at a low lagging ability ingredient which must be compensated through capacitor