Power measurements in switched mode power supplies
US11349387B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 28, 2020 |
| Grant date | May 31, 2022 |
| Priority date | — |
| Expiry date | Jul 25, 2040 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A switched mode power supply (SMPS) includes a filter, a power factor correction (PFC) circuit, and a control circuit configured to determine various electrical parameters of the SMPS. In some embodiments, the control circuit is configured to determine a power line frequency and an AC input voltage based on an AC line voltage and an AC neural voltage. In other embodiments, the control circuit is configured to determine an AC input current based on a reactive current flowing through the filter and a PFC AC current. In further embodiments, the control circuit is configured to report a value of an electrical parameter if value is determined to be accurate. Other example switch mode power supplies, control circuits and methods are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.