Systems and methods providing low current regulation for AC arc welding processes
US9114471B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Mar 1, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/1012
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Systems and methods providing low current regulation for AC arc welding processes to regulate arc welding performance. In arc welding power source embodiments, configurations of bridge and arc regulation circuits allow for the directional switching of the welding output current through the welding output circuit path and induce a voltage between the electrode and the workpiece of the welding output circuit path that is sufficient to re-ignite the arc during polarity transition of the output current. The arc regulation circuit provides a high inductance level for storing energy, in both polarities, which induces the voltage level for re-igniting the arc during the zero crossing of the output current and provides low end stabilization of arc current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.