Rapid startup of a fuel cell power module using motor drive

Details Rapid startup of a fuel cell power module using motor drive Rapid startup of a fuel cell power module using motor drive

2011-02-08

2011-02-08

Laios, Maria J (Department: 1727)

Chemistry: electrical current producing apparatus, product, and

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

Process or means for control of operation

C429S443000, C429S440000

Reexamination Certificate

active

07883809

ABSTRACT:
A technique for heating a fuel cell stack at stack start-up that includes using the vehicle motor drive system to generate waste heat independent from providing traction. Particularly, at fuel cell stack start-up, the electric traction inverter associated with the traction motor that drives the vehicle is controlled so that command signals provided by an inverter to a traction motor do not provide motor torque, but dissipates power into the motor windings and/or motor structure as waste heat. Thus, the output power generated by the fuel cell stack can be made high enough to quickly heat the fuel cell stack through inefficiencies in the stack operation, without providing driving torque. Additionally, the electric traction inverter can be operated so that waste heat is generated within the semiconductor power switches in the inverter.

REFERENCES:
patent: 5950752 (1999-09-01), Lyons
patent: 5998885 (1999-12-01), Tamor et al.
patent: 2003/0010487 (2003-01-01), Ieda et al.

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