Power factor correction circuit
US11251698B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 20, 2021 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Jan 20, 2041 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P80/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power factor correction circuit includes an input power source, a first bridge arm, a second bridge arm, an output capacitor and an active clamp unit. The first bridge arm includes a first switch and a second switch in series. The second bridge arm includes a third switch and a fourth switch in series. The active clamp unit includes a second inductor, a clamp capacitor and a fifth switch. The power factor correction circuit may realize the ZVS function of the first switch and the second switch by the collaboration of the active clamp unit and the conduction/non-conducting state of the first switch, the second switch, the third switch and the fourth switch.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.