Patent ID: 7616460
Filing Date: 2009-11-10
Classification: H02H,H02M,Y02T

Abstract:
1. A power system, comprising: a first power supply to provide DC power to a direct current (DC) bus; an inverter coupled to the first power supply to transform the DC power provided by the first power supply to a form that can be used by an electrical load; a second power supply coupled to an Alternating Current (AC) bus to provide a signal on the AC bus; a switching control unit to operate on the AC bus signal to obtain a switched signal; an inverter drive unit coupled to the AC bus to receive the switched signal and coupled to the inverter to provide switched signals to the inverter to control transformation of the DC power provided by the first power supply; and a module coupled to the AC bus to detect a particular condition of the AC bus, and if the condition is detected, to send a control signal to decouple the inverter drive unit from the AC bus.