Feedforward control of motor drives with output sinewave filter
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United States of America Patent
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Dec 18, 2018
Grant Date -
May 18, 2017
app pub date -
Feb 1, 2017
filing date -
Jan 16, 2013
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Abstract
Disclosed examples include power conversion systems and methods to operate an inverter to drive a motor load through an intervening output filter, a transformer and a cable, including a current regulator to compute a command value according to a current reference value and a motor current feedback value, a cross-coupled feedforward component to compensate the command value by an estimated cross-coupled voltage value to compute a control output value, a cross-coupled object component to compute the motor current feedback value according to a voltage value using a plant transfer function representing the output filter, the transformer, the cable and the motor load, and a controller to provide the inverter switching control signals to control the inverter according to the control output value.
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