The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 2015
Filed:
Mar. 15, 2010
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Stefan W. Lixfeld, Wiesbaden, DE;
Manish Sinha, Pittsford, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Stefan W. Lixfeld, Wiesbaden, DE;
Manish Sinha, Pittsford, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A system and method for converting a fuel cell stack power request signal to a stack current set-point that considers stack performance parameters. The method includes obtaining a power-current relationship curve of the fuel cell stack to provide stack parameters including exchange current density and mass transfer coefficient. The method then calculates a slope for the stack using the parameters from the power-current relationship curve estimation that includes calculating a cell voltage at two predetermined stack current densities. The method then calculates a change in current in response to the power request signal, the stack voltage, the stack current and the calculated slope, and uses the change in current to update the current set-point for the stack.