ELECTRIC MOTOR DRIVER WITH CURRENT SENSOR ERROR CORRECTION
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United States of America Patent
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Issued Date -
Sep 22, 2016
app pub date -
Mar 20, 2015
filing date -
Mar 20, 2015
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A system configured to operate an electric motor and correct for current measurement errors present in current sensors used by the system includes a plurality of voltage drivers, a plurality of current sensors, and a controller. Each of the plurality of voltage drivers is electrically coupled to each phase of a motor. Each of the plurality of current sensors is each configured to measure current in each phase of the motor. The controller is configured to sample a current-signal from each current sensor, and determine a baseline-offset error of each current sensor based on a plurality of samples of the current-signal from each current sensor while the motor is rotating.
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