Power control for hybrid fuel cell systems

Details Power control for hybrid fuel cell systems Power control for hybrid fuel cell systems

2006-08-15

2010-11-09

Yuan, Dah-Wei D. (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

Fuel cell, subcombination thereof, or method of making or...

Process or means for control of operation

C429S428000, C429S430000

Reexamination Certificate

active

07829229

ABSTRACT:
A hybrid fuel cell system that includes a fuel cell stack and a high voltage battery. The fuel cell system also includes a cell voltage controller that controls the average cell voltage of the cells in the fuel cell stack, a damped driver request module that damps a driver power request signal, and a power balancing module. The power balancing module maintains the cell voltage of the cells in the stack within a predetermined range, and uses excess power from the stack beyond what is requested to charge the battery. The power balancing module includes a base load limiter that prevents the cell voltage from going above a predetermined value, unless the battery is at is maximum state of charge.

REFERENCES:
patent: 5487956 (1996-01-01), Bromley et al.
patent: 2003/0091882 (2003-05-01), Schmidt et al.
patent: 2003/0201674 (2003-10-01), Droppo et al.
patent: 2004/0018399 (2004-01-01), Jung
patent: 2007/0284166 (2007-12-01), Maier et al.

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