Ford Global Technolgoies, LLC

Bruce M Kopf

Yi Ding

Jing Song

A hybrid power system ( ) for supplying power to a load ( ) such as an electric vehicle is provided. The power system ( ) includes an energy storage device ( ) and a fuel cell system ( ). When the state of charge of the energy storage device ( ) is greater than or equal to a predetermined state of charge, the energy storage device ( ) supplies all of the power to the load ( ). When the state of charge of the energy storage device ( ) falls below the predetermined state of charge, the fuel cell system ( ) supplies at least a portion of the power to the load ( ). In accordance with one aspect of the invention, the fuel cell system ( ) then supplies all of the power to the load ( ) as long as the power requirement of the load ( ) does not exceed an optimal power output of the fuel cell system ( ).

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Grosse Pointe Shores, MI, United States of America

Bruce M Kopf