초록 ▼

In a motor control system and method controlled by a d-axis current command value i.sub.ds and a q-axis current command value i.sub.qs, a d-axis voltage command value V.sub.d * and a q-axis voltage command value v.sub.q * are computed on the basis of d-axis current deviation .DELTA.i.sub.d of d-axis

In a motor control system and method controlled by a d-axis current command value i.sub.ds and a q-axis current command value i.sub.qs, a d-axis voltage command value V.sub.d * and a q-axis voltage command value v.sub.q * are computed on the basis of d-axis current deviation .DELTA.i.sub.d of d-axis current value i.sub.d from the d-axis current command value i.sub.ds and q-axis current deviation .DELTA.i.sub.q of q-axis current value i.sub.q from the q-axis current command value i.sub.qs and on the basis of q-axis inductance value L.sub.q and d-axis inductance value L.sub.d wherein the inductance values L.sub.q and L.sub.d are tuned or adjusted so that the d-axis current deviation .DELTA.i.sub.d and q-axis current deviation .DELTA.i.sub.q approach zero.

대표청구항 ▼

[ What is claimed is:] [1.] A motor control system comprising:current sensors for detecting values of currents in individual stator phases of a motor;a magnetic pole detector for detecting a position of a rotor magnetic pole of the motor;a first converter for converting the detected values of curren

[ What is claimed is:] [1.] A motor control system comprising:current sensors for detecting values of currents in individual stator phases of a motor;a magnetic pole detector for detecting a position of a rotor magnetic pole of the motor;a first converter for converting the detected values of currents of the individual stator phases into a d-axis current value and a q-axis current value based on the detected position of the rotor magnetic pole;voltage command value computing means for computing a d-axis voltage command value and a q-axis voltage command value on the basis of corresponding deviations of the d-axis and q-axis current values from respective d-axis and q-axis command current values and on the basis of q-axis and d-axis inductance values;inductance tuning means for tuning the respective q-axis and d-axis inductance values so that the d-axis current deviation and the q-axis current deviation is reduced to zero;a second converter for converting the d-axis and the q-axis voltage command values into voltage command values of individual stator phases in accordance with the position of the rotor magnetic pole; anda pulse width modulator for generating pulse width modulating signals of the individual stator phases on the basis of the voltage command values of the individual stator phases.