Converter and a method for controlling a converter
US6995994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2002 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Nov 26, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The invention relates to a converter provided with a resonant circuit (16), which converter comprises a device (31) for measuring the derivative (dI/dt) of the current through the current valves 82, 3) and a detection device (32) co-operating with said measuring device (31) for detecting a short-circuit in the converter, the detection device (32) being adapted to detect a short-circuit current when the current derivative (dI/dt) measured by the measuring device (31) is equal to or exceeds a stipulated current derivative limit value (dI/dtlim) during a length of time exceeding a stipulated time limit value (tlim). The invention also relates to a method for controlling such a converter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.