Device for determining constant of rotating machine

Details Device for determining constant of rotating machine Device for determining constant of rotating machine

2003-06-06

2008-08-05

Masih, Karen (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S727000, C318S254100, C318S132000, C318S434000

Reexamination Certificate

active

07408322

ABSTRACT:
A device for determining a constant of a rotating machine includes: a test number selector outputting a test number n, selected from 1 to N (N≧2), and outputting a phase signal q determined by a predetermined condition that is previously set based on the test number n; a tester for supplying an alternating voltage to the rotating machine induction machine based on the test number n and the phase signal q and outputing a reference phase gain and a 90-degree-delay phase gain based on values of the phase signal q corresponding to 1 to N of the test number n; and a rotating machine constant calculator receiving the reference phase gain and the 90-degree-delay phase gain and then calculating a constant of the rotating machine using the reference phase gain and the 90-degree-delay phase gain.

REFERENCES:
patent: 5475293 (1995-12-01), Sakai et al.
patent: 6066934 (2000-05-01), Kaitani et al.
patent: 2004/0193387 (2004-09-01), Jinyama
patent: 02-304380 (1990-12-01), None
patent: 03-117347 (1991-05-01), None
patent: 06-273496 (1994-09-01), None
patent: 07-055899 (1995-03-01), None

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