Converter circuit for switching a large number of switching voltage levels
US7292460B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2003 |
| Grant date | Nov 6, 2007 |
| Priority date | — |
| Expiry date | Dec 5, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4837
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A converter circuit is specified for switching a large number of switching voltage levels, which has n first switching groups for each phase, with the n-th first switching group being formed by a first power semiconductor switch and a second power semiconductor switch, and with the first first switching group to the-th switching group each being formed by a first power semiconductor switch and a second power semiconductor switch and by a capacitor, which is connected to the first and second power semiconductor switches, with each of the n first switching groups being connected in series to the respectively adjacent first switching group, and with the first and the second power semiconductor switches in the first first switching group being connected to one another. In order to reduce the amount of electrical energy stored in the converter circuit, n≧1 and p second switching groups and p third switching groups are provided, which are each formed by a first power semiconductor switch and a second power semiconductor switch and by a capacitor which is connected to the first and second power semiconductor switches, where p≧1 and each of the p second switching groups is connected in ser…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.