Controller for permanent magnet synchronous motor

Details Controller for permanent magnet synchronous motor Controller for permanent magnet synchronous motor

1995-05-22

1997-07-29

Martin, David S.

Electricity: motive power systems

Synchronous motor systems

Field winding circuits

318700, 318802, 318701, 318254, H02P 146

Patent

active

056524951

ABSTRACT:
A controller for a permanent magnet synchronous motor which includes a D-axis current command section and a Q-axis current command section. The D-axis current command section increases the command value of the D-axis current so as to set a judged value to be zero by leading the current phase when the judged value is positive. In addition, the D-axis current command section decreases the command value of the D-axis current when the judged value is negative. Moreover, the D-axis current command section holds the command value of the D-axis current at a predetermined minimum value when the decreasing command value of the D-axis current becomes smaller than the predetermined minimum value. The Q-axis current command section is responsible for supplying a command value of the Q-axis current.

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patent: 5448150 (1995-09-01), Yamamoto et al.
patent: 5504404 (1996-04-01), Tamaki et al.

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