PROCEDE DE REGLAGE D'UN CONVERTISSEUR A VALVES

• Main Author: B. N. TIKHMENEV, A. V. KAMENEV, Z. M. RUBCHINSKY, A. P. DOTSENKO ET A. K. YAGOLKOVSKY
• Format: Patent
• Language: French
• Published: 07.11.1980
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; TRANSMISSION; TRANSPORTING; VEHICLES IN GENERAL

In the case of a transformer-supplied valve converter, a series circuit having a capacitor (4) and an inductor (5) which can be bridged is connected across the secondary winding (3) in order to use the method. The main valves (12, 13, 14, 15) are activated in each half-cycle of the supply voltage by phase-controlled control pulses, the control voltages being applied alternately to the valves at a time interval which corresponds to one half-cycle of the charging current of the capacitor (4). In the second half of the half-cycle of the supply voltage, the control pulses are also applied to the damping valves (20, 21) alternately, at a time interval corresponding to the half-cycle of the capacitor charging current. The method can be used for current transformers in the electrical industry, for supplying various DC and AC loads, especially for railways. The method allows a power factor of more than 0.95 to be achieved, the inductive voltage losses to be reduced and the interference effect of the railway power supply to be reduced. L'INVENTION CONCERNE LES PROCEDES DE COMMANDE ELECTRIQUE.LE PROCEDE FAISANT L'OBJET DE L'INVENTION EST CARACTERISE NOTAMMENT EN CE QUE L'APPLICATION DES IMPULSIONS DE COMMANDE REGLABLES EN PHASE AUX VALVES PRINCIPALES DU CONVERTISSEUR 1 EST REALISEE A TOUR DE ROLE DURANT TOUTE L'ALTERNANCE DES OSCILLATIONS PROPRES DU COURANT ELECTRIQUE DANS LE CONDENSATEUR 4 ENGENDREES AU MOMENT DE L'APPLICATION DES IMPULSIONS DE COMMANDE REGLABLES EN PHASE.L'INVENTION S'APPLIQUE NOTAMMENT AUX CONVERTISSEURS A VALVES DES LOCOMOTIVES ELECTRIQUES A COURANT ALTERNATIF DES CHEMINS DE FER INTERURBAINS ET DE BANLIEUE.