Torque oscillation monitoring
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United States of America Patent
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Nov 15, 2011
Grant Date -
Jul 15, 2010
app pub date -
Jan 12, 2009
filing date -
Jan 12, 2009
priority date (Note) -
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Abstract
A method of detecting and monitoring torsional oscillation in a mechanical coupling between a prime mover and a multiphase alternating current (AC) electrical generator, comprises the steps of: detecting in at least one received signal variations that are indicative of changes in the rotational speed of the electrical generator; extracting information from the detected variations that are indicative of torsional oscillation to produce a torsional oscillation signal that has information relating to at least the amplitude of the torsional oscillation; and monitoring the torsional oscillation signal to determine the presence and severity of the torsional oscillation in the mechanical coupling.
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