Fuel cell device and method for feeding electrical current to electrical network
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United States of America Patent
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Nov 18, 2014
Issued Date -
N/A
app pub date -
Jun 7, 2011
filing date -
Dec 9, 2008
priority date (Note) -
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Abstract
A method is disclosed for producing electrical current by a fuel cell device, which inputs electrical current to an electrical network. A fuel cell device can be arranged to be parallel connected to the electrical network. A phase reference signal can be utilized in the inputting of the electrical current, and electrical current inputted to electrical network can be current controlled by a power transformer having a power stage. The fuel cell device can be switched off from the electrical network when a malfunction occurs in the electrical network. The fuel cell device can be changed, using the phase reference signal, to the switched off operation mode for performing voltage controlled operation of the power transformer. A controllable load can be used for maintaining a power stability between the voltage controlled power transformer and other parts of the fuel cell device. When the malfunction has vanished, the fuel cell device can be changed, using the phase reference signal, to a switched on operation mode for performing current controlled operation of the power transformer.
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