AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics
US6781351B2 · kind B2 · utility
96Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 28, 2002 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Dec 8, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B70/10
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
AC/DC cascaded power converters having high DC conversion ratio and improved AC line harmonics provide low input harmonic currents, high power factor and efficient operation for low voltage DC outputs when coupled directly to a source of unfiltered rectified AC voltage. The power converter incorporates an intermediate storage element that provides most or all of the energy storage capacitance within the power converter and a blocking device that enables continuous energy transfer from AC line to output to achieve unity power factor and regulated output while maintaining low AC input current ripple.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.