Title:
SYSTEMS AND METHODS TO BALANCE MAGNETIC FLUX IN A WELDING TYPE SWITCHED MODE POWER SUPPLY
Document Type and Number:
WIPO Patent Application WO/2019/140418
Kind Code:
A1
Abstract:
Systems and methods to reduce magnetic flux in a welding -type switched mode power supply (100) are disclosed. It comprises: a transformer (214) configured to transform an input voltage (104) to a welding-type voltage; a capacitor (204) in series with a primary winding (216) of the transformer; switches configured to control a voltage applied to a series combination of the primary winding of the transformer and the capacitor; a comparator coupled to the transformer and configured to compare the welding-type output voltage to a threshold voltage; and a flux accumulator (118) to determine a net flux in the transformer based on the voltage applied to the series combination of the primary winding of the transformer and the capacitor.
Inventors:
MANTHE ALAN ADAM (US)
BROCK MAXWELL BODE (US)
BROCK MAXWELL BODE (US)
Application Number:
PCT/US2019/013572
Publication Date:
July 18, 2019
Filing Date:
January 15, 2019
Export Citation:
Assignee:
ILLINOIS TOOL WORKS (US)
International Classes:
H02M1/40; H02M7/48
Domestic Patent References:
| WO2016073145A1 | 2016-05-12 |
Foreign References:
| US4439822A | 1984-03-27 |
Other References:
None
Attorney, Agent or Firm:
PAHNKE, Chad A. (US)
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