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US 7,256,506 B2Granted
Backup power hierarchy for a facility system
AssigneeSprint Communications Company L.P.
InventorLarry L. Johnson
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Abstract
A system is disclosed which accomplishes a method of providing backup power to a device in a facility. The method includes using turbines to combusting a fuel to generate a primary power source. If this source fails, a secondary source of power is obtained from a commercial utility. If the commercial utility is not available, power is generated by a proton exchange membrane. Proton exchange membranes generate power by noncombustibly consuming hydrogen. Capacitors are used to maintain power when the system switches between energy sources.
Claims6
A method of providing electrical power comprising:
- providing a first power source by one of:
- consuming a fuel in a microturbine adapted to produce as an output electrical power, and
- deriving alternating current from a commercial utility;
- automatically switching to a second power source upon failure of said first power source;
- and
- generating said second power source by noncombustibly consuming a gas with one or more fuel cells.
3 more elements
Dependencies are inferred from the claim text.