Motor control apparatus and motor control method

Details Motor control apparatus and motor control method Motor control apparatus and motor control method

2005-08-09

2005-08-09

Ip, Paul (Department: 2837)

Electricity: motive power systems

Synchronous motor systems

Synchronization systems

C318S721000, C318S722000, C318S432000, C701S041000

Reexamination Certificate

active

06927551

ABSTRACT:
A 3-phase AC current flowing to a 3-phase synchronous motor is converted through coordinate conversion to a d-axis current id and a q-axis current iq in a dq-axis coordinate system which rotates in synchronization with the motor rotation and a phase δ of a rectangular wave voltage is calculated based upon the current deviation between a q-axis current command value iq* and the q-axis current iq. A 3-phase rectangular wave voltage is generated from a DC source based upon the calculated phase δ and is applied to the 3-phase synchronous motor.

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