Vector control apparatus method for induction motor using magnet

Details Vector control apparatus method for induction motor using magnet Vector control apparatus method for induction motor using magnet

1998-09-16

1999-10-26

Ro, Bentsu

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, 318804, H02P 2100, H02P 736

Patent

active

059734744

ABSTRACT:
In a vector control apparatus and method for an induction motor, a magnetic flux observer of a full order is provided for receiving a primary voltage vector (v.sub.1) and a primary current vector (i.sub.1) and for generating a vector related to an estimated secondary magnetic flux component to be supplied to a current command calculating section and related to an estimate rotation phase of a rotary coordinate system to be supplied to a current controlling section based on the primary voltage vector and the primary current vector, the magnetic flux observer of the full order having a plurality of coefficients expressed in circuit constants of a T-I type equivalent circuit of the induction motor.

REFERENCES:
patent: 5270498 (1993-12-01), Tanahashi
patent: 5341081 (1994-08-01), Yamada
patent: 5446360 (1995-08-01), Son et al.
Kubota et al., "Adaptive Flux Observer of Induction Motor and its Stability" T.IEE Japan vol. 111-D No. 3 pp. 188-1195 (1991).
Hashimoto et al., "Performance of Torque Control of Induction Motor Using State Observer" Institute of Industrial Science pp. 349-354 (1987).
Kubota et al., "Direct Field Oriented Control of Induction Motor without Speed Sensors Using Adaptive Flux Observer" T.IEE Japan vol. 111-D, No. 11, pp. 954-959 (1991).
Yang et al., "Hyperstability of the Full Order Adaptive Observer for Vector Controlled-Induction Motor Drive without Speed-Sensor" T.IEE Japan vol. 112-D, No. 11, pp. 1046-1055 (1992).

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