Induction motor vector control

Details Induction motor vector control Induction motor vector control

1991-06-12

1992-08-04

Smith, Jr., David

Electricity: motive power systems

Induction motor systems

Primary circuit control

318800, H02P 540

Patent

active

051362287

ABSTRACT:
An induction motor vector control apparatus employing a rotating Cartesian coordinate system (d,q) having a d-axis held in coincidence with a secondary flux of the induction motor. Another rotating Cartesian coordinate system (.gamma., .delta.) having a .gamma.-axis held in coincidence with the induction motor primary current to detects a .delta.-axis induction motor primary voltage change caused by a change in the induction motor secondary resistance. The .delta.-axis primary voltage change contains no component related to a primary resistance change and it is used to compensate the secondary resistance for its change.

REFERENCES:
patent: 4431957 (1984-02-01), Chausse et al.
patent: 4509003 (1985-02-01), Oanishi
patent: 4677361 (1987-06-01), Yonemoto
patent: 4680695 (1987-07-01), Kerkman et al.
Fetz, et al., Comparison of Different Field Oriented Control Methods For an Induction Machine Fed by a PWM-Codulator Controlled Inverter, 1989 Patent Abstracts of Japan, JP-A-61-147788, Nov. 21, 1986, vol. 10.

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