Patent · US Active

System and method for controlling an anode side recirculation pump in a fuel cell system

US8129056B2 · kind B2 · utility

3Cited by

1References

20Claims

0Family size

Assignee

GM GLOBAL TECHNOLOGY OPERATIONS LLC · US

Inventors

Bernhard Baaser · Trebur, DE
Volker Formanski · Wiesbaden, DE

Key dates

Filing date	May 6, 2008
Grant date	Mar 6, 2012
Priority date	—
Expiry date	Jun 15, 2030

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A system and method for controlling the speed of a recirculation pump in an anode recirculation loop of a fuel cell system based on a predetermined ratio of fresh hydrogen to recirculated anode gas. The system uses a model to determine the volume flow of the recirculated gas through a fuel cell stack to determine the recirculation rate based on a measured temperature of the recirculated gas, a measured pressure drop across a recirculation pump, a pressure drop across the anode inlet and outlet of the stack, a percentage of hydrogen in the recirculated gas, and the density of the recirculated gas.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.