Resonant circuit and resonant power converter with a narrow operating frequency bandwidth
US8040697B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2009 |
| Grant date | Oct 18, 2011 |
| Priority date | — |
| Expiry date | Jan 6, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A resonant circuit has two parallel resonant branches and one assistant inductor connecting the two resonant branches. Each resonant branch has a series capacitor and a series inductor connected in series. The other end of the series inductor is for connecting to a primary side of a transformer unit. The resonant circuit can provide two characteristic resonant frequencies fr and fm, so that a resonant power converter using the resonant circuit has an operating frequency fs that satisfies fs>fr or fm<fs<fr. The combination of the two resonant branches and the assistant inductor can reduce the frequency switch range of the resonant power converter within a specific voltage gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.