Electric power conversion systems – Current conversion – With condition responsive means to control the output...
Reexamination Certificate
2005-08-16
2005-08-16
Berhane, Adolf (Department: 2838)
Electric power conversion systems
Current conversion
With condition responsive means to control the output...
C363S101000
Reexamination Certificate
active
06930897
ABSTRACT:
The invention is directed to a method, system and device for converting direct current (DC) electrical voltage from a fuel cell to an alternating current (AC) voltage. The inventive method regulates power drawn from the fuel cell and from a battery to maintain a substantially constant DC voltage across a DC bus, and inverts the DC voltage from the DC bus to the AC voltage. The method may further electrically isolate the fuel cell from the load. Also, the inventive method may prevent current from flowing to the fuel cell. The inventive method may also provide a charging current to the battery.
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Jungreis Aaron M.
Parker Jeffrey J.
ABB Research Ltd.
Berhane Adolf
Katterle Paul R.
Woodcock & Washburn LLP
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