POWER SOURCE DEVICE FOR ARC PROCESSING
PROBLEM TO BE SOLVED: To overcome the problem that the reduction in the reverse bias voltage of a switching element drive circuit operable to drive an inverter circuit of a power source device increases the turn-off loss, which leads to the deterioration of the switching element.SOLUTION: The power...
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| creator | TAJIMA HIROTSUNE MANABE AKIHIKO |
| description | PROBLEM TO BE SOLVED: To overcome the problem that the reduction in the reverse bias voltage of a switching element drive circuit operable to drive an inverter circuit of a power source device increases the turn-off loss, which leads to the deterioration of the switching element.SOLUTION: The power source device for arc processing comprises: a DC conversion circuit; a full-bridge inverter circuit which converts a DC voltage to a high frequency AC voltage; an output control circuit which controls the inverter circuit, and stops the inverter circuit for a given length of time when the input current to a transformer reaches or exceeds a reference current; a switching element drive circuit which drives a switching element according to an output control signal, and supplies a reverse bias capacitor with current; and a switching control circuit. The switching control circuit turns on first and fourth switching elements so that the period of the first switching element remaining ON does not overlap the period of the fourth switching element remaining ON between 0 and 1/2 cycle, and turns on second and third switching elements so that the period of the second switching element remaining ON does not overlap the period of the third switching element remaining ON between 1/2 and 1 cycle when the inverter circuit remains stopped. |
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The switching control circuit turns on first and fourth switching elements so that the period of the first switching element remaining ON does not overlap the period of the fourth switching element remaining ON between 0 and 1/2 cycle, and turns on second and third switching elements so that the period of the second switching element remaining ON does not overlap the period of the third switching element remaining ON between 1/2 and 1 cycle when the inverter circuit remains stopped.</description><language>eng</language><subject>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</subject><creationdate>2012</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120614&DB=EPODOC&CC=JP&NR=2012115009A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20120614&DB=EPODOC&CC=JP&NR=2012115009A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>TAJIMA HIROTSUNE</creatorcontrib><creatorcontrib>MANABE AKIHIKO</creatorcontrib><title>POWER SOURCE DEVICE FOR ARC PROCESSING</title><description>PROBLEM TO BE SOLVED: To overcome the problem that the reduction in the reverse bias voltage of a switching element drive circuit operable to drive an inverter circuit of a power source device increases the turn-off loss, which leads to the deterioration of the switching element.SOLUTION: The power source device for arc processing comprises: a DC conversion circuit; a full-bridge inverter circuit which converts a DC voltage to a high frequency AC voltage; an output control circuit which controls the inverter circuit, and stops the inverter circuit for a given length of time when the input current to a transformer reaches or exceeds a reference current; a switching element drive circuit which drives a switching element according to an output control signal, and supplies a reverse bias capacitor with current; and a switching control circuit. The switching control circuit turns on first and fourth switching elements so that the period of the first switching element remaining ON does not overlap the period of the fourth switching element remaining ON between 0 and 1/2 cycle, and turns on second and third switching elements so that the period of the second switching element remaining ON does not overlap the period of the third switching element remaining ON between 1/2 and 1 cycle when the inverter circuit remains stopped.</description><subject>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</subject><subject>CLADDING OR PLATING BY SOLDERING OR WELDING</subject><subject>CONTROL OR REGULATION THEREOF</subject><subject>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</subject><subject>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</subject><subject>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</subject><subject>ELECTRICITY</subject><subject>GENERATION</subject><subject>MACHINE TOOLS</subject><subject>METAL-WORKING NOT OTHERWISE PROVIDED FOR</subject><subject>PERFORMING OPERATIONS</subject><subject>SOLDERING OR UNSOLDERING</subject><subject>TRANSPORTING</subject><subject>WELDING</subject><subject>WORKING BY LASER BEAM</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2012</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZFAL8A93DVII9g8NcnZVcHEN8wRSbv5BCo5BzgoBQf7OrsHBnn7uPAysaYk5xam8UJqbQcnNNcTZQze1ID8-tbggMTk1L7Uk3ivAyMDQyNDQ1MDA0tGYKEUA_kUj0w</recordid><startdate>20120614</startdate><enddate>20120614</enddate><creator>TAJIMA HIROTSUNE</creator><creator>MANABE AKIHIKO</creator><scope>EVB</scope></search><sort><creationdate>20120614</creationdate><title>POWER SOURCE DEVICE FOR ARC PROCESSING</title><author>TAJIMA HIROTSUNE ; MANABE AKIHIKO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2012115009A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2012</creationdate><topic>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</topic><topic>CLADDING OR PLATING BY SOLDERING OR WELDING</topic><topic>CONTROL OR REGULATION THEREOF</topic><topic>CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER</topic><topic>CONVERSION OR DISTRIBUTION OF ELECTRIC POWER</topic><topic>CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING</topic><topic>ELECTRICITY</topic><topic>GENERATION</topic><topic>MACHINE TOOLS</topic><topic>METAL-WORKING NOT OTHERWISE PROVIDED FOR</topic><topic>PERFORMING OPERATIONS</topic><topic>SOLDERING OR UNSOLDERING</topic><topic>TRANSPORTING</topic><topic>WELDING</topic><topic>WORKING BY LASER BEAM</topic><toplevel>online_resources</toplevel><creatorcontrib>TAJIMA HIROTSUNE</creatorcontrib><creatorcontrib>MANABE AKIHIKO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>TAJIMA HIROTSUNE</au><au>MANABE AKIHIKO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POWER SOURCE DEVICE FOR ARC PROCESSING</title><date>2012-06-14</date><risdate>2012</risdate><abstract>PROBLEM TO BE SOLVED: To overcome the problem that the reduction in the reverse bias voltage of a switching element drive circuit operable to drive an inverter circuit of a power source device increases the turn-off loss, which leads to the deterioration of the switching element.SOLUTION: The power source device for arc processing comprises: a DC conversion circuit; a full-bridge inverter circuit which converts a DC voltage to a high frequency AC voltage; an output control circuit which controls the inverter circuit, and stops the inverter circuit for a given length of time when the input current to a transformer reaches or exceeds a reference current; a switching element drive circuit which drives a switching element according to an output control signal, and supplies a reverse bias capacitor with current; and a switching control circuit. The switching control circuit turns on first and fourth switching elements so that the period of the first switching element remaining ON does not overlap the period of the fourth switching element remaining ON between 0 and 1/2 cycle, and turns on second and third switching elements so that the period of the second switching element remaining ON does not overlap the period of the third switching element remaining ON between 1/2 and 1 cycle when the inverter circuit remains stopped.</abstract><oa>free_for_read</oa></addata></record> |
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| 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 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 |
| title | POWER SOURCE DEVICE FOR ARC PROCESSING |
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