Control system and method for motors

Details Control system and method for motors Control system and method for motors

1998-07-07

1999-10-19

Masih, Karen

Electricity: motive power systems

Induction motor systems

Primary circuit control

318800, 318803, 318806, 318722, 318808, H02P 528

Patent

active

059695005

ABSTRACT:
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.

REFERENCES:
patent: 5585708 (1996-12-01), Richardson et al.
patent: 5598081 (1997-01-01), Okamura et al.
patent: 5629597 (1997-05-01), Imanaka

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