Patent ID: 8259478
Filing Date: 2012-09-04
Classification: H02J,H02M,Y02E

Abstract:
1. A power inverter for converting a direct current (DC) power to an alternating current (AC) power, the inverter comprising: an input terminal for connecting to an external DC power source, the DC power source having a DC power; an inverter coupling circuit operable to electrically couple to a first transformer module and a second transformer module, wherein each transformer module is operable to convert at least a portion of the DC power to at least a portion of the AC power; an output terminal for outputting the AC power to an AC power network; an AC power network sensor for detecting a property associated with the AC power network; a DC power sensor for detecting a property associated with the DC power source; a first switch for electrically connecting the inverter coupling circuit to the output terminal, wherein the state of the first switch is determined by the AC power network sensor; and a second switch for electrically connecting the DC power source to the inverter coupling circuit, wherein the state of the second switch is determined by the DC power sensor.