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:
Jun. 05, 2012
Filed:
Feb. 06, 2008
John P. Salvador, Penfield, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Frank X Leo, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
John P. Salvador, Penfield, NY (US);
Sriram Ganapathy, Rochester, NY (US);
Kiran Mallavarapu, Honeoye Falls, NY (US);
Frank X Leo, Honeoye Falls, NY (US);
Balasubramanian Lakshmanan, Pittsford, NY (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An algorithm for determining the maximum net power available from a fuel cell stack as the stack degrades over time using an online adaptive estimation of a polarization curve of the stack. The algorithm separates the current density range of the stack into sample regions, and selects a first sample region from the far left of the estimated polarization curve. The algorithm then calculates the cell voltage for that current density sample region, and determines whether the calculated cell voltage is less than or equal to a predetermined cell voltage limit. If the calculated cell voltage is not less than the cell voltage limit, then the algorithm selects the next sample region along the polarization curve. When the calculated cell voltage does reach the cell voltage limit, then the algorithm uses that current density for the sample region being analyzed to calculate the maximum power of the fuel cell stack.