Grid and Stand-alone Connections
In induction generators, the magnetizing flux is established by a capacitor bank connected to the machine in case of stand alone system and in case of grid connection it draws magnetizing current from the grid.
For a grid connected system, frequency and voltage at the machine will be dictated by the electric grid, since it is very small compared to the whole system.
For stand-alone systems, frequency and voltage are complex function of machine parameters, capacitance used for excitation, and load value and type.
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