Control system for excitation of synchronous machine

Details Control system for excitation of synchronous machine Control system for excitation of synchronous machine

1991-03-18

1993-04-06

Stephan, Steven L.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

320 28, H02P 900

Patent

active

052006913

ABSTRACT:
An excitation control apparatus for a synchronous machine comprises a plural number of group control units that perform control of output pulses of a plural number of phase components, respectively, with each of the group control units including an automatic voltage regulator portion that outputs a control signal to regulate the terminal voltage of a synchronous machine, a phase control portion that outputs a phase signal to control the phase of a trigger pulse of a thyristor rectifier that supplies a field current to a field winding of the synchronous machine, an intermediate phase selector portion that selects a phase signal of an intermediate phase from phase signals that are supplied from the phase control portions of the group control units, and a pulse output portion that outputs the trigger pulse on the basis of the intermediate phase signal selected by the intermediate phase selector portion, a logical calculation circuit that supplies to the thyristor rectifier the logical sum of the trigger pulses from the group control units.

REFERENCES:
patent: 3634750 (1972-01-01), Bobo
patent: 4264856 (1981-04-01), Frierdich et al.
patent: 4472806 (1984-09-01), Blair
patent: 4641079 (1987-02-01), Kato et al.
Patent Abstracts of Japan, vol. 14, No. 120, Mar. 1990 (Pub No. JP-A-1 315 300).

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