Induction Generator

An induction generator is a type of alternating current generator built on the same principle as an induction motor, producing electricity when its rotor is mechanically turned faster than the synchronous speed set by the stator rotating magnetic field. Because it cannot build up its own magnetic field, it draws magnetizing current, typically 20 to 35 percent of full load current, from the grid or from capacitor banks rather than generating it internally, and it needs no brushes or commutator, which makes it mechanically simple and rugged. This makes it a common choice for wind turbines and small or micro hydropower plants, where it can recover energy from a variable-speed rotor using relatively simple controls. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/