Single-stage isolated high power factor AC/DC converter with leakage inductor energy recovery function
US8213190B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 25, 2009 |
| Grant date | Jul 3, 2012 |
| Priority date | — |
| Expiry date | Aug 4, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A single-stage isolated high power factor AC/DC converter with a leakage inductor energy recovery function includes a buck-boost circuit, for step-down or step-down a power supply; a transformer, electrically connected to the buck-boost circuit, for transforming the stepped-down or stepped-up power supply; a switch, electrically connected to the buck-boost circuit; an input capacitor, electrically connected to the buck-boost circuit; and an output circuit, for outputting the power supply transformed by the transformer. When the switch is cut off, the buck-boost circuit provides an energy recovery path to return energy stored in a leakage inductor of the transformer to the input capacitor. The energy stored in the leakage inductor of the transformer in a flyback converter or a forward converter is returned to the input capacitor through the energy recovery path. The problem caused by the leakage inductor of the transformer is solved without using any additional element.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.