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. 21, 2007
Filed:
Oct. 21, 2004
Rong Zheng, Edmonton, CA;
Hongsang Rho, Edmonton, CA;
Luis Yamarte, Edmonton, CA;
Gary J. Kovacik, Edmonton, CA;
Partha Sarkar, Edmonton, CA;
Rong Zheng, Edmonton, CA;
Hongsang Rho, Edmonton, CA;
Luis Yamarte, Edmonton, CA;
Gary J. Kovacik, Edmonton, CA;
Partha Sarkar, Edmonton, CA;
Alberta Research Council, Inc., Edmonton, Alberta, CA;
Abstract
This invention relates to controlling a load-following solid oxide fuel cell system such that the fuel cells in the system are operating within an acceptable electrochemical reaction efficiency. The system has a controller that is programmed to detect a load change on a fuel cell stack, and when the load decreases, reduces the fuel flow rate to the stack or deactivates one or more fuel cells in the stack such that the stack operates within an acceptable electrochemical reaction efficiency range corresponding to the decreased load; and when the load increases, the controller increases the fuel flow rate to the stack or activates fuel cells in the stack such that the stack operates within the acceptable electrochemical reaction efficiency range.