Motor vehicle electrical system having an active bridge rectifier and overvoltage protection during a load dump, rectifier system, associated operating method and means for its implementation
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United States of America Patent
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May 2, 2017
Grant Date -
Dec 11, 2014
app pub date -
May 15, 2014
filing date -
May 15, 2013
priority date (Note) -
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Abstract
A vehicle electrical system includes: an active bridge rectifier which is connected to a generator via multiple phase terminals, and having terminals on the direct voltage side; a unit for recognizing load shedding at the active bridge rectifier and short-circuiting the phase terminals in a clocked manner, as the result of which a pulsed current is fed to the vehicle electrical system; a vehicle electrical system capacitor configured for smoothing the pulsed current; and a voltage limiting unit configured for clipping a voltage between the terminals of the bridge rectifier on the direct voltage side to a predefined maximum voltage.
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