Clamp circuits for power converters
US8966294B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2011 |
| Grant date | Feb 24, 2015 |
| Priority date | — |
| Expiry date | Aug 12, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power converter comprises an input port configured to receive a source of power, an output port configured to provide output power, and a bridge circuit coupled to the input port. The bridge circuit comprises a first switch coupled in series with a second switch, and a third switch coupled in series with a fourth switch. A first clamp rectifier is coupled in series with a second clamp rectifier, and the first and second clamp rectifiers are coupled in parallel with the first and second switches. A first clamp capacitor is coupled between the first and second clamp rectifiers, with the first clamp capacitor operative to reduce power loss in the first and second clamp rectifiers. A first resonant inductor is coupled between the first and second switches. The power converter also includes a transformer operatively coupled to the bridge circuit, with the transformer comprising a primary winding and at least one secondary winding. A current rectifying circuit is operatively coupled to the secondary winding of the transformer and the output port.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.