Method and apparatus for control of a welding power source
US6414267B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 2001 |
| Grant date | Jul 2, 2002 |
| Priority date | — |
| Expiry date | Jun 25, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F29/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus and method is disclosed for series inductance-reactance control of a transformer in a welder. The transformer includes a transformer core configured to conduct magnetic flux and at least one primary winding connected to a voltage source that excites the primary windings. Secondary windings, configured to generate secondary voltages and currents for welding, are wound about each of the primary windings and are magnetically coupled to the magnetic flux in the transformer core. The transformer also includes a control core magnetically coupled with a secondary winding, wherein the control core has an inductive reactance in response to the flow of secondary current from the secondary winding. The secondary current is adjustable by varying an air gap between core sections of the control core. A crank mechanism configured to move one of the core sections with respect to the other and vary the distance of the air gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.