CURRENT BALANCING CONTROL ARRANGEMENT OF POWER SEMICONDUCTOR USED IN PARALLEL

PROBLEM TO BE SOLVED: To provide a control arrangement capable of totally and theoretically balancing sharing of current among parallel elements, without discriminating electric characteristics of power semiconductors used in parallel. SOLUTION: There are provided a plurality of thyristors arranged...

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Hauptverfasser:	ONIZUKA OSANORI, KANBARA ICHIRO
Format:	Patent
Sprache:	eng
Schlagworte:	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 ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a control arrangement capable of totally and theoretically balancing sharing of current among parallel elements, without discriminating electric characteristics of power semiconductors used in parallel. SOLUTION: There are provided a plurality of thyristors arranged in parallel that are phase controlled at a prescribed cycle, a gate pulse generating circuit for generating a gate pulse at each prescribed phase control cycle of thyristors, and a synchronous control circuit which sequentially outputs gate pulses generated at the gate pulse generating circuit to the thyristors so that the thyristors are sequentially made conductive at a prescribed cycle. Average currents of a plurality of thyristors used in parallel are made to agree with each other. COPYRIGHT: (C)2005,JPO&NCIPI