Arrangement and method for monitoring galvanic isolation of fuel cell device
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United States of America Patent
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Jan 7, 2014
Grant Date -
Dec 8, 2011
app pub date -
Jul 21, 2011
filing date -
Jan 23, 2009
priority date (Note) -
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Abstract
A method is disclosed for monitoring galvanic isolation of a fuel cell device. At least one stack of fuel cells and at least one load circuit for fuel cells are arranged to an electrically freely floating configuration towards at least one structure near fuel cells. A controlled switching is performed via at least two switching points to at least one measurement element having known impedance in connection to the at least one structure. Measurements are performed from the measurement element to form voltage information. The voltage information and at least voltage information between switching points are processed to check floatages of fuel cells in relation to said at least one structure.
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