Control device for alternating-current motor
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United States of America Patent
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Jul 18, 2006
Grant Date -
Mar 9, 2006
app pub date -
Aug 15, 2005
filing date -
Sep 6, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In one coordinate system of arbitrary rectangular coordinate systems including a coordinate system in which the position of a stator is fixed, a coordinate system in which the position of a rotor is fixed, and a coordinate system which rotates at a rotational frequency which is n times (n is an integer which is not 0 or 1) that of the rotor, a filter on any other coordinate system is defined. Further, driving of a motor is controlled by utilizing this filter. As a result, a coordinate transformation operation need not be individually performed with respect to control variables.
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