Systems and methods to estimate magnetic flux in a switched mode power supply
US11070139B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2017 |
| Grant date | Jul 20, 2021 |
| Priority date | — |
| Expiry date | Oct 7, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4803
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems and methods to estimate magnetic flux in a switched mode power supply are disclosed. An example welding-type power supply includes a switched mode power supply, comprising: a transformer configured to transform an input voltage to a welding-type voltage; a capacitor in series with a primary winding of the transformer; and switches configured to control a voltage applied to a series combination of the primary winding of the transformer and the capacitor; a voltage estimator coupled to the transformer and configured to output a signal representative of an alternating-current (AC)-coupled voltage at the capacitor; and a flux accumulator 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.