Method and system to determine state-of-health of a fuel cell using an intelligent system
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 10, 2004
Grant Date -
Mar 27, 2003
app pub date -
Apr 15, 2002
filing date -
Mar 12, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method of and system for determining the state-of-health of a proton exchange membrane fuel cell stack connected to a load comprises detecting the real part of the impedance Z.sub.1 of the fuel cell stack at a selected frequency; detecting the voltage V.sub.1 of the fuel cell stack at open circuit; detecting the voltage V.sub.2 of the fuel cell stack when the maximum load current is being drawn from said fuel cell stack; and determining the state of health of said fuel cell stack from a fuzzy system trained in a relationship between said real part of the impedance of the fuel cell stack at the selected frequency, the voltage of the fuel cell stack at open circuit, and the voltage of the fuel cell stack when the maximum load current is being drawn from said fuel cell stack.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully