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1. (WO1991007800) FREQUENCY INSENSITIVE DIGITAL PHASE ANGLE MEASURING CIRCUIT
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/007800 International Application No.: PCT/US1990/005714
Publication Date: 30.05.1991 International Filing Date: 04.10.1990
IPC:
H02P 9/30 (2006.01)
H ELECTRICITY
02
GENERATION, CONVERSION, OR DISTRIBUTION OF ELECTRIC POWER
P
CONTROL OR REGULATION OF ELECTRIC MOTORS, GENERATORS, OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS OR REACTORS OR CHOKE COILS
9
Arrangements for controlling electric generators for the purpose of obtaining a desired output
14
by variation of field
26
using discharge tubes or semiconductor devices
30
using semiconductor devices
Applicants:
SUNDSTRAND CORPORATION [US/US]; 4949 Harrison Avenue P.O. Box 7003 Rockford, IL 61125-7003, US
Inventors:
FOSTER, Joseph; US
RASHID, Abdul; US
Agent:
HITT, David, H.; 4949 Harrison Avenue P.O. Box 7003 Rockford, IL 61125-7003, US
Priority Data:
438,79320.11.1989US
Title (EN) FREQUENCY INSENSITIVE DIGITAL PHASE ANGLE MEASURING CIRCUIT
(FR) CIRCUIT DE MESURE NUMERIQUE DE L'ANGLE DE PHASE INSENSIBLE A LA FREQUENCE
Abstract:
(EN) The problem of stabilizing operation of a load division control (74) is resolved using a phase angle counter circuit (90) which calculates phase angle insensitive to frequency changes of the output voltage waveform. The phase angle counter circuit (90) includes a series of counters (94, 96, 100 and 102) for calculating phase angle.
(FR) Afin de résoudre le problème posé par la stabilisation du fonctionnement d'une commande (74) de division de la charge, on utilise un circuit de comptage (9) de l'angle de phase qui calcule l'angle de phase indépendamment des changements de fréquence de la forme d'onde de la tension de sortie. Le circuit (90) de comptage de l'angle de phase comprend une série de compteurs (94, 96, 100 et 102) qui calculent l'angle de phase.
Designated States: JP
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)