Title:
ARC WELDING MACHINE
Document Type and Number:
WIPO Patent Application WO/2019/021768
Kind Code:
A1
Abstract:
An arc welding machine (10) for performing arc welding by supplying a load power to a processing load (13) which includes an arc welding electrode (11) and a matrix (12) is provided with: a power conversion unit (20) which receives an input of AC power from an AC power supply (15) and converts the AC power into a load power; an input power calculation unit (35) which calculates an input power to the power conversion unit; a load current detection unit (31) which detects a load current supplied to the processing load; a load voltage detection unit (32) which detects a load voltage supplied to the processing load (13); and an anomaly determination unit (36) which, on the basis of the load current detected by means of the load current detection unit (31) and the load voltage detected by means of the load voltage detection unit (32), calculates a load power to the processing load (13), and, on the basis of the load power to the processing load (13) and the input power calculated by means of the input power calculation unit (35), determines anomaly in a power supply path from the AC power supply (15) to the processing load (13).
Inventors:
OYAMA HIDETOSHI
SHIMABAYASHI SHINSUKE
KOWA MASARU
AIMI KEI
SHIMABAYASHI SHINSUKE
KOWA MASARU
AIMI KEI
Application Number:
PCT/JP2018/025298
Publication Date:
January 31, 2019
Filing Date:
July 04, 2018
Export Citation:
Assignee:
PANASONIC IP MAN CO LTD (JP)
International Classes:
B23K9/10; B23K9/073; B23K9/095
Foreign References:
| JP2013063452A | 2013-04-11 | |||
| JP2013009087A | 2013-01-10 | |||
| JPH0241778A | 1990-02-09 |
Attorney, Agent or Firm:
KAMATA Kenji et al. (JP)
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