ALTERNATOR RIPPLE VOLTAGE REDUCTION USING OUTPUT FEEDBACK TO AN INDEPENDENT FIELD COIL
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United States of America Patent
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Issued Date -
Sep 12, 2013
app pub date -
Mar 6, 2012
filing date -
Mar 6, 2012
priority date (Note) -
Abandoned
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Abstract
A generator comprises first and second field coils whose combined magnetic flux causes stator current within one or more stator windings which, when rectified via a rectifier circuit, produces rectified output current with reduced voltage fluctuations. A filter circuit extracts the AC component of the rectified output current and delivers it to the second field coil. The magnetic flux generated by the second field coil modifies the magnetic flux of the first field coil effectively cancelling the voltage ripples associated with the rectified output current of the generator.
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