Title:
WELDING POWER SUPPLY DEVICE AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2023/249057
Kind Code:
A1
Abstract:
Provided is a welding power supply device 10 wherein, provided respectively for inverter circuits 12a, 12b are: input current detection units 13a, 13b which respectively detect input currents of the inverter circuits 12a, 12b; overcurrent determination circuits 30a, 30b which determine the presence/absence of an overcurrent on the basis of whether or not the electric currents detected by the input current detection units 13a, 13b are equal to or greater than a threshold current; and inverter drive circuits 40a, 40b which stop both the inverter circuits 12a, 12b when at least one of the overcurrent determination circuits 30a, 30b has determined that an overcurrent is present. On the basis of the plurality of electric currents detected by the plurality of input current detection units 13a, 13b, a control device 50 determines the presence/absence of an anomaly pertaining to the balance between the plurality of electric currents and, if the control device 50 has been determined that there is an anomaly, the control device 50 stops the inverter circuits 12a, 12b.
Inventors:
HAMANO YOSHIYUKI
OYAMA HIDETOSHI
ITO DAIKI
OYAMA HIDETOSHI
ITO DAIKI
Application Number:
PCT/JP2023/022966
Publication Date:
December 28, 2023
Filing Date:
June 21, 2023
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
H02M3/28; B23K9/10
Domestic Patent References:
| WO2019146247A1 | 2019-08-01 |
Foreign References:
| JP2010012510A | 2010-01-21 | |||
| JP2018153087A | 2018-09-27 | |||
| JPH1094259A | 1998-04-10 | |||
| JPH0433573A | 1992-02-04 | |||
| JP2013240252A | 2013-11-28 |
Attorney, Agent or Firm:
MAEDA & PARTNERS (JP)
Download PDF:
Previous Patent: MOTIVE POWER TRANSMISSION DEVICE
Next Patent: DISPLAY DEVICE AND METHOD FOR MANUFACTURING DISPLAY DEVICE
Next Patent: DISPLAY DEVICE AND METHOD FOR MANUFACTURING DISPLAY DEVICE