A THREE-WHEEL AIR TURBOCOMPRESSOR FOR PEM FUEL CELL SYSTEMS

摘要

A fuel cell system comprises a compressor (11) and a fuel processor (15) downstream of the compressor. A fuel cell stack (17) is in communication with the fuel processor and compressor. A combustor (18) is downsteam of the fuel cell stack. First and second turbines (19, 20) are downstream of the fuel processor and in parallel flow communication with one another. A distribution valve (39) is in communication with the first and second turbines. The first and second turbines are mechanically engaged to the compressor. A bypass valve (13) is intermediate the compressor and the second turbine, with the bypass valve enabling a compressed gas from the compressor to bypass the fuel processor.