Excitation control apparatus for rotary electric machine

Details Excitation control apparatus for rotary electric machine Excitation control apparatus for rotary electric machine

1986-07-08

1987-12-15

Wong, Peter S.

Electric power conversion systems

Current conversion

Including automatic or integral protection means

363 54, 363 65, 363 69, 307 82, 307 87, 322 22, 322 28, 324158MG, H02H 700, H02P 900

Patent

active

047137410

ABSTRACT:
An excitation control apparatus for a rotary electric machine according to this invention is such that principal portions of an automatic voltage regulator are dualized by effectively combining circuits preferring decrease of a field current and circuits preferring increase of the field current, thereby to enhance the reliability of the apparatus. The circuits preferring the decrease of the field current when the ignition phase of a thyristor circuit advances precede the circuits preferring the increase of the field current, so that an excitation system is normally operated even in cases of the damages or abnormalities of any internal component, etc.

REFERENCES:
patent: 4245182 (1981-01-01), Aotsu et al.
patent: 4326159 (1982-04-01), Aotsu et al.
patent: 4410848 (1983-10-01), Frierdich
patent: 4438385 (1984-03-01), Sato et al.

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