CAPACITOR-TYPE WELDING DEVICE AND CAPACITOR-TYPE WELDING METHOD

[Purpose] To provide an economical capacitor-type welding device and capacitor-type welding method that have a small power loss, that can be made compact, and that reliably control a charging circuit without being affected by the inductance of a charging path. [Solution] In an exemplary capacitor-ty...

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Bibliographische Detailangaben
Hauptverfasser:	ARAI Kouji, KOMATSU Akio, KADOYA Yasuo
Format:	Patent
Sprache:	eng ; fre ; ger
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 CLADDING OR PLATING BY SOLDERING OR WELDING CONTROL OR REGULATION THEREOF CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRICITY GENERATION MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	[Purpose] To provide an economical capacitor-type welding device and capacitor-type welding method that have a small power loss, that can be made compact, and that reliably control a charging circuit without being affected by the inductance of a charging path. [Solution] In an exemplary capacitor-type welding device and an exemplary capacitor-type welding method of the invention, a bypass switching element (5) having a forward-blocking function is connected in parallel to output terminals (3, 4) of a charging circuit (2), and the bypass switching element (5) is brought into a conduction state to allow a backflow current, which is caused to flow by a magnetic energy stored in the inductance of a primary winding (6a) or an inductor (14) included in the charging path, to bypass the charging circuit. A discharge switching element (8) is brought into a conduction state after the bypass switching element (5) enters the non-conduction state and recovers the forward-blocking function.