Single-phase and three-phase compatible ac-dc conversion circuit and method of detecting input current thereof
US12244214B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2022 |
| Grant date | Mar 4, 2025 |
| Priority date | — |
| Expiry date | Jan 20, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02T90/14
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An AC-DC conversion circuit provides a three-phase power source. The AC-DC conversion circuit includes a first inductor, a second inductor, a third inductor, a switch bridge arm assembly, and a control unit. The switch bridge arm assembly includes three switch bridge arms, and each switch bridge arm includes an upper switch and a lower switch. A plurality of common-connected nodes between the upper switches and the lower switches are coupled to the three-phase power source through the first inductor, the second inductor, and the third inductor. The control unit turns on the upper switch and the lower switch to provide a current detection loop. The control unit acquires a magnitude of a first current flowing through the first inductor and a magnitude of a third current flowing through the third inductor, and determines whether a current detection mechanism of the first current and the third current is normal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.