Electric motor control device
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United States of America Patent
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Sep 2, 2014
Grant Date -
Mar 22, 2012
app pub date -
Sep 15, 2011
filing date -
Sep 16, 2010
priority date (Note) -
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status (Latency Note)
Importance
Abstract
An electric motor control device includes a control section adapted to control supply of a drive current to an electric motor, and a rotational speed detection section adapted to detect a rotational speed of the electric motor, the drive current includes a d-axis current and a q-axis current, and the control section calculates a q-axis current command value based on a torque command value to the electric motor, calculates a d-axis current command value using a difference between the rotational speed of the electric motor and a previously determined base rotational speed of the electric motor, and the q-axis current command value, and performs vector control on the electric motor using the d-axis current command value and the q-axis current command value.
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