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Fuel cell power system and method of controlling a fuel cell power system

  • US 6,743,536 B2
  • Filed: 07/26/2001
  • Issued: 06/01/2004
  • Est. Priority Date: 05/17/2000
  • Status: Expired due to Term
First Claim
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1. A fuel cell power system comprising:

  • a fuel cell which, in operation, converts chemical energy into direct current electrical energy, the fuel cell being defined by a plurality of independently operable fuel cell sub-systems;

    a DC bus;

    a switching circuit electrically coupled with the fuel cell sub-systems and configured to independently selectively couple the fuel cell sub-systems to the DC bus; and

    an energy storage device electrically coupled with the DC bus and configured to be coupled to a load, and wherein the switching circuit selectively electrically couples a selectable number of the fuel cell sub-systems to the DC bus to supply direct current electrical energy to the energy storage device to charge the energy storage device.

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