WO2023100059 - ADAPTIVE INDUCTANCE COMPENSATION IN A WELDING CIRCUIT
National phase entry is expected:
Publication Number
WO/2023/100059
Publication Date
08.06.2023
International Application No.
PCT/IB2022/061483
International Filing Date
28.11.2022
Title **
[English]
ADAPTIVE INDUCTANCE COMPENSATION IN A WELDING CIRCUIT
[French]
COMPENSATION D'INDUCTANCE ADAPTATIVE DANS UN CIRCUIT DE SOUDAGE
Applicants **
ESAB AB
Inventors
KARLSSON, Rolf Lennart
Priority Data
17/537,644
30.11.2021
US
Application details
| Total Number of Claims/PCT | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2271 | |
| EPO | Filing, Examination, Granting | 11969 | |
| Japan | Filing, Examination, Granting | 2418 | |
| South Korea | Filing, Examination, Granting | 2447 | |
| USA | Filing, Examination, Granting | 5140 |
Total:
24,245
The term for entry into the National Phase has expired. This quotation is for informational purposes only
Abstract[English]
A method comprises: providing a welding current pulse through a welding circuit to create an arc for a welding operation; measuring an arc voltage to produce a measured arc voltage pulse that includes an inductive voltage drop due to inductance in the welding circuit and current ramps of the welding current pulse; and during the welding operation, implementing an inductance-compensation feedback loop. The feedback loop includes canceling the inductive voltage drop from the measured arc voltage pulse using a canceling voltage to produce a compensated arc voltage pulse; and deriving the canceling voltage based on the compensated arc voltage pulse.[French]
La présente invention concerne un procédé qui comprend les étapes consistant à : fournir une impulsion de courant de soudage à travers un circuit de soudage pour créer un arc pour une opération de soudage ; mesurer une tension d'arc pour produire une impulsion de tension d'arc mesurée qui comprend une chute de tension inductive due à l'inductance dans le circuit de soudage et des rampes de courant de l'impulsion de courant de soudage ; et mettre en œuvre, pendant l'opération de soudage, une boucle de rétroaction de compensation d'inductance. La boucle de rétroaction comprend l'annulation de la chute de tension inductive à partir de l'impulsion de tension d'arc mesurée à l'aide d'une tension d'annulation pour produire une impulsion de tension d'arc compensée ; et la dérivation de la tension d'annulation sur la base de l'impulsion de tension d'arc compensée.