Hydrogen recirculation system using integrated motor generator energy

A system for delivering a supply fluid stream to a fuel cell stack that discharges an unused fluid stream is provided. A fuel supply is adapted to provide a pressurized supply fluid stream. An expander is in fluid communication with the fuel supply and is configured to receive the pressurized supply...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	OSBORNE KURT DAVID, OGLESBY KEITH ANDREW
Format:	Patent
Sprache:	eng
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION HEATING LIGHTING MACHINES OR ENGINES FOR LIQUIDS MECHANICAL ENGINEERING OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY PRODUCING MECHANICAL POWER WEAPONS WIND, SPRING WEIGHT AND MISCELLANEOUS MOTORS
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Beschreibung
Zusammenfassung:	A system for delivering a supply fluid stream to a fuel cell stack that discharges an unused fluid stream is provided. A fuel supply is adapted to provide a pressurized supply fluid stream. An expander is in fluid communication with the fuel supply and is configured to receive the pressurized supply fluid stream to reduce the pressure of the pressurized supply fluid stream and to generate mechanical energy in response to reducing the pressure of the pressurized supply fluid stream. An electric machine is operably coupled to the expander and for selectively converting the mechanical energy generated by the expander into electrical energy. A compressor/blower is capable of being driven by at least one of the mechanical energy and the electrical energy to control the flow of the unused fluid stream to the fuel cell stack for recirculating the unused fluid stream back to the fuel cell stack.