Vector control apparatus for induction motor

Details Vector control apparatus for induction motor Vector control apparatus for induction motor

1993-08-05

1994-08-23

Wysocki, Jonathan

Electricity: motive power systems

Induction motor systems

Primary circuit control

318805, H02P 700

Patent

active

053410815

ABSTRACT:
In a vector control apparatus for an induction motor, a divider (13) is provided which receives an exciting instruction .lambda..sub.2d */M* from a secondary magnetic flux instruction amplifier (1.sub.1) which outputs .lambda..sub.2d */M* according to an angular frequency .omega..sub.r derived from a speed detector (4.sub.3). The divider (13) receives an exciting inductance variation A.sub.Mn from the exciting inductance M' compensation circuit (12, 12') to divide A.sub.Mn by .lambda..sub.2d */M* so that the derived output value is supplied to a first-order advance element calculation block (1.sub.2) so that a target value i.sub.1d * in a d-axis component in a primary current of the induction motor is derived.

REFERENCES:
patent: 4640389 (1987-02-01), Kamaike
patent: 4767976 (1988-08-01), Mutoh et al.
patent: 4780658 (1988-10-01), Koyama
patent: 4814683 (1989-03-01), Okamoto et al.
patent: 4855661 (1989-08-01), Okamoto et al.
patent: 5136228 (1992-04-01), Yamada et al.
patent: 5155797 (1992-10-01), Nomura et al.
Patent Abstracts of Japan, Publication No. JP 4-304183, Publication Date Oct. 1992, Abstract vol. 017134, Abstract Publication Date Mar. 1993.

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