Method for detecting compressor surge in a fuel cell system...

Details Method for detecting compressor surge in a fuel cell system... Method for detecting compressor surge in a fuel cell system...

2008-02-06

2009-10-27

Hodge, Robert (Department: 1795)

Chemistry: electrical current producing apparatus, product, and

With pressure equalizing means for liquid immersion operation

C429S006000, C415S001000, C415S026000, C417S020000, C417S300000

Reexamination Certificate

active

07608353

ABSTRACT:
A method for detecting compressor surge in a fuel cell system. The system includes a turbomachine compressor that delivers charge air to the cathode side of a fuel cell module. A bi-directional mass flow meter measures the airflow through the compressor, and provides an indication of a reverse airflow through the compressor for surge protection. A controller receives a signal from the mass flow meter indicative of the reverse flow. The controller controls a motor driving the compressor and a back pressure valve at the cathode exhaust of the fuel cell module to control the pressure in the fuel cell module to remove the surge condition.

REFERENCES:
patent: 3901620 (1975-08-01), Boyce
patent: 5325884 (1994-07-01), Mirel et al.
patent: 2004/0161647 (2004-08-01), Rainville et al.

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