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Method and apparatus for multiple mode control of voltage from a fuel cell system

  • US 20030113599A1
  • Filed: 12/14/2001
  • Published: 06/19/2003
  • Est. Priority Date: 12/14/2001
  • Status: Active Grant
First Claim
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1. A fuel cell system, comprising:

  • a fuel cell stack;

    a battery;

    a series pass element electrically coupled between at least a portion of the fuel cell stack and a portion of the battery; and

    a regulating circuit for regulating current through the series pass element in response to a greater of a battery charging current error, a battery voltage error and a stack current error.

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