Patent ID: 7244524

Claim:
A power system, comprising: a primary power source in electrical communication with an electrolysis cell, wherein said electrolysis cell is in electrical communication with a bus; a secondary power source in electrical communication with said bus, wherein said secondary power source comprises an electrochemical system including a fuel cell; a controller electrically disposed between and in operable communication with said bus and said electrolysis cell, and electrically disposed between and in communication with said bus and said secondary power source; wherein said controller is configured to monitor said primary power source, initiate powering by said electrolysis cell when said primary power source exhibits selected first characteristics, initiate said secondary power source when said electrolysis cell exhibits a selected second characteristic, and initiate interruption of powering by said secondary power source when at least one of said primary power source does not exhibit said selected first characteristics and said secondary power source exhibits a selected third characteristic.