Auxiliary resonant commutated pole three-point or multipoint converter
US6205040A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 20, 2000 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Apr 20, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/4811
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A three-point or multipoint converter is described. The converter has a series circuit formed of at least four main switches per converter phase, which are connected electrically in parallel between a positive and a negative DC voltage rail. An individual snubber capacitance is disposed in parallel with each individual main switch. At least two converter levels are formed between the DC voltage rails, a junction point or junction points and voltage neutral points of the converter levels are accessible. An output of the converter phase is connected to the voltage neutral points of the converter levels, via a series circuit formed of at least one resonant inductance and independently controllable bidirectional auxiliary switches. Junction points of the snubber capacitances that do not at the same time form the output of the converter phase are connected via charge control switches to the junction point or the junction points of the converter levels.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.