Converter assembly with an ability to disconnect a fault current and a method for disconnecting a fault current at a converter assembly of this type
US11289996B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2017 |
| Grant date | Mar 29, 2022 |
| Priority date | — |
| Expiry date | Jul 31, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E60/60
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A converter assembly has multi-phase multi-stage converters which are connected to parallel-connected transformers. The converter assembly contains series-connected partial converters, each having three parallel-connected bipolar phase modules, which are formed of two series-connected converter modules. The connection points of the converter modules form the phase connections for the transformers. The phase modules of a first partial converter consist only of unipolar sub-modules and those of a second partial converter consists only of bipolar sub-modules. A controller respectively reduces at least the partial DC voltage of the second partial converter, wherein the partial DC voltage thereof can be inverted at least until compensating the partial DC voltage of the first partial converter if the direct current exceeds a target value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.