Modular multilevel converter and charging circuit therefor
US9559541B2 · kind B2 · utility
12Cited by
90References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2015 |
| Grant date | Jan 31, 2017 |
| Priority date | — |
| Expiry date | Jun 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J2207/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Methods and charging apparatus are presented for charging cell capacitors of a multilevel power conversion system, in which an auxiliary charging source is selectively applied across DC bus terminals while one or more selected multilevel converter cells are alternately switched between a first state to bypass the selected cell or cells and a second state to charge the cell capacitor or capacitors of the selected cell via charging current from the auxiliary charging source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.