POWER SUPPLY DEVICE AND POWER SUPPLY DEVICE FOR WELDING

• Main Authors: TABATA YOSHIYUKI, MISAWA TSUKASA, HAMANO YOSHIYUKI, HORIE KOTA, MORIKAWA TETSUYA
• Format: Patent
• Language: Chinese; English
• Published: 04.09.2020
• 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

This power supply device is provided with: at least a pair of inverter circuits connected in parallel; at least a pair of transformer circuits which respectively transform output voltages of the inverter circuits; a current transformer in which one of wires to be detected of each of the inverter circuits is passed through a hollow coil comprising a magnetic material core with a detection wire wound thereon; an inverter control unit which controls a plurality of switching elements constituting each of the inverter circuits so that the phase of an inverter current from each of the inverter circuits flowing through each of the wires to be detected that are passed through the current transformer is inverted; and an anomaly determination unit which determines whether, on the basis of an inducedcurrent flowing through the detection wire of the current transformer, there is an anomaly in one of the inverter circuits. 电源装置具备：并联连接的至少一对逆变器电路；至少一对变压电路，对各所述逆变器电路的输出电压进行变压；电流变压器，将各所述逆变器电路中的任一个逆变器电路的被检测电线分别插通到将检测电线卷绕于磁性体芯的中