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US 5,991,670 AGranted
Power control system for a fuel cell powered vehicle
AssigneeDBB Fuel Cell Engines GmbH
InventorsW. Edward Mufford, Douglas G. Strasky
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AssigneeDBB Fuel Cell Engines GmbH
InventorsW. Edward Mufford, Douglas G. Strasky
Estimating the term…
A control system interrelatedly controls the electric power output and oxidant supply in a fuel cell electric power generation system. The power generation system comprises at least one fuel cell stack, and a plurality of electrical loads powered by the fuel cell stack, including an electric traction motor for propelling the vehicle, and a compressor for delivering oxidant gas to the fuel cell stack. The electric power output of the at least one fuel cell stack is dependent on the compressor speed. The control system comprises a summing device for determining the total instantaneous power demand of the electrical loads based on a plurality of sensed power demand signals, and a processor for generating a feed-forward output signal for adjusting the compressor speed to a value predicted to give fuel cell power output sufficient to satisfy the instantaneous power demand.
A method for interrelated control of electrical power output and oxidant supply in a fuel cell electric power generation system, the system comprising a plurality of electrical loads comprising an electric traction motor and a variable-speed compressor, the system further comprising at least one fuel cell stack for supplying electrical power to the electrical loads, the at least one fuel cell stack supplied with a fuel and supplied with an oxidant using the compressor, the electrical power output of the at least one fuel cell stack dependent on the compressor speed, said method comprising:
A method for interrelated control of electrical power output and oxidant supply in a fuel cell electric power generation system, the system comprising a plurality of electrical loads comprising an electric traction motor and a variable-speed compressor, the system further comprising at least one fuel cell stack for supplying electrical power to the electrical loads, said at least one fuel cell stack supplied with a fuel and supplied with an oxidant using the compressor, the electrical power output of the at least one fuel cell stack is dependent on the compressor speed, said method comprising:
A control system for interrelatedly controlling the electrical power output and oxidant supply in an electric power generation system, said power generation system comprising:
A control system for interrelatedly controlling the electrical power output and oxidant supply in an electric power generation system, said power generation system comprising:
Dependencies are inferred from the claim text.