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:
May. 18, 2021
Filed:
Dec. 19, 2018
Microsoft Technology Licensing, Llc, Redmond, WA (US);
Di Wang, Redmond, WA (US);
Sriram Govindan, Redmond, WA (US);
John J. Siegler, Carnation, WA (US);
Jie Liu, Medina, WA (US);
Ricardo Bianchini, Bellevue, WA (US);
Eric Peterson, Woodinville, WA (US);
Sean M. James, Olympia, WA (US);
Bryan Kelly, Carnation, WA (US);
Microsoft Technology Licensing, LLC, Redmond, WA (US);
Abstract
A fuel cell power controller tracks load current and fuel cell output voltage, and alerts on excessive fuel cell ramp rate, so another power source can supplement the fuel cell and/or the load can be reduced. A power engineering process makes efficient use of available fuel cell power by ramping up power flow rapidly when power is available, while respecting the ramp rate and other power limitations of the fuel cell and safety limitations of the load. Power flow decreases after an alert indicating an electrical output limitation of the fuel cell. Permitted power flow increases in response to a power demand increase (actual or requested) from the load in the absence of the alert. Power flow may increase or decrease in a fixed amount, a proportional amount, or per a sequence. A power controller relay may trip open on a low fuel cell output voltage or high load current.