Vector control apparatus for permanent magnet motor
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United States of America Patent
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Jul 14, 2009
Grant Date -
Sep 20, 2007
app pub date -
Feb 27, 2007
filing date -
Mar 15, 2006
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A vector control apparatus for a permanent magnet motor operated in the region of weak magnet field, wherein when the output voltages of the power converter saturate, the phase error command value represented by the difference between the angular position of the reference axis for control and the angular position of the motor magnetic flux axis is generated on the basis of the difference between the q-axis current command value and the detected value of the q-axis current, and the command values for the output voltages of the power converter are corrected by using the phase error command value, whereby a highly responsive torque control with high precision can be achieved.
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