Induction motor control method

Details Induction motor control method Induction motor control method

1995-07-05

1997-05-06

Ro, Bentsu

Electricity: motive power systems

Induction motor systems

Primary circuit control

318801, 318805, 318812, H02P 5402

Patent

active

056274467

ABSTRACT:
In one embodiment of the present invention, a control method for an induction motor includes calculating a desired quadrature-axis voltage and a desired direct-axis voltage according to both current control and voltage control. Below a predetermined motor speed, the motor is controlled in accordance with current control only. Above that predetermined speed, the two desired quadrature-axis voltages are combined in relative proportions, with the influence of voltage control being greater with higher motor speed. The two desired direct-axis voltages are likewise combined. The influence of voltage control thus increases with increasing motor speed. Above a second motor speed threshold, the motor is controlled in accordance with voltage control only.

REFERENCES:
patent: 4052648 (1977-10-01), Nola
patent: 4379258 (1983-04-01), Sugimoto
patent: 4672286 (1987-06-01), Williams
patent: 4680525 (1987-07-01), Kobari et al.
patent: 4800327 (1989-01-01), Fujioka et al.
patent: 4808903 (1989-02-01), Matsui et al.
patent: 4912386 (1990-03-01), Lurie
patent: 4958117 (1990-09-01), Kerkman et al.
patent: 5038092 (1991-08-01), Asano et al.
patent: 5066899 (1991-11-01), Nashiki
patent: 5119007 (1992-06-01), Tunehiro et al.
patent: 5264773 (1993-11-01), Koyama et al.
patent: 5274317 (1993-12-01), Utley et al.

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