Inverter-type welding and cutting power supply with PFC function

• Main Authors: WU YUETAO, YANG ZHENWEN
• Format: Patent
• Language: Chinese; English
• Published: 22.06.2011
• 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; CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS; 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; EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATION; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The utility model relates to the field of welding and cutting power supply products and in particular to an inverter-type welding and cutting power supply with a PFC (Power Factor Correction) function, which mainly comprises an input EMC (Electro Magnetic Compatibility) circuit, an inverter circuit, an isolating substation circuit, a secondary side rectifying and filtering circuit, a main control panel circuit and an active PFC circuit, wherein the inverter circuit, the isolating substation circuit, the secondary side rectifying and filtering circuit, and the main control panel circuit are sequentially connected; and the active PFC circuit is connected with the input EMC circuit and the inverter circuit. By adopting the power supply provided by the utility model, the power factor of the inverter-type welding and cutting power supply equipment is improved, and the pollution of the harmonic wave to a power grid can be reduced; the current-type control is adopted, so that the power factor value is high, the THD