Patent ID: 7535120
Filing Date: 2009-05-19
Classification: F03D,F05B,H02J,H02P,Y02E

Abstract:
1. A power system with low-voltage ride-through capability comprising: a primary source of power; a generator that converts power from said primary source of power into electrical power; an inverter that conditions at least a portion of said electrical power to voltage and current at a frequency and phase angle appropriate for transmission to an AC utility grid having multiple phases; a sensor that detects the voltage frequency and phase angle on one phase of said utility grid during a fault condition on said grid; and, a control system for said inverter that controls said inverter to synthesize current waveform templates for phases of said AC utility grid based on said detected voltage frequency and phase angle of said one phase, thereby providing current to said grid at a frequency and phase angle that are based on said detected voltage frequency and phase angle to thereby utilize said current waveform templates to deliver electrical current to said phases of said AC utility grid during said fault condition.