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Power inverter with optical isolation

United States Patent

6,972,972
December 6, 2005
View the Complete Patent at the US Patent & Trademark Office
An optically isolated power electronic power conversion circuit that includes an input electrical power source, a heat pipe, a power electronic switch or plurality of interconnected power electronic switches, a mechanism for connecting the switch to the input power source, a mechanism for connecting comprising an interconnecting cable and/or bus bar or plurality of interconnecting cables and/or input bus bars, an optically isolated drive circuit connected to the switch, a heat sink assembly upon which the power electronic switch or switches is mounted, an output load, a mechanism for connecting the switch to the output load, the mechanism for connecting including an interconnecting cable and/or bus bar or plurality of interconnecting cables and/or output bus bars, at least one a fiber optic temperature sensor mounted on the heat sink assembly, at least one fiber optic current sensor mounted on the load interconnection cable and/or output bus bar, at least one fiber optic voltage sensor mounted on the load interconnection cable and/or output bus bar, at least one fiber optic current sensor mounted on the input power interconnection cable and/or input bus bar, and at least one fiber optic voltage sensor mounted on the input power interconnection cable and/or input bus bar.
Duncan; Paul G. (Vienna, VA), Schroeder; John Alan (Leesburg, VA)
Airak, Inc. (Manassas, VA)
10/ 413,570
April 15, 2003
This invention was made with Government support under Grant No. DE-FG02-01ER831242 awarded by the Department of Energy. The Government has certain rights in this invention.