Power electronic converter and a method for controlling it
US10298149B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 26, 2016 |
| Grant date | May 21, 2019 |
| Priority date | — |
| Expiry date | Feb 26, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/11
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A power electronic converter comprises controllable switches (104-109) and a control system (110) for operating the controllable switches. The control system is configured to control the controllable switches so as to produce at least one test voltage pulse. The power electronic converter comprises a voltage sensor (111) for detecting a reflected voltage that is caused by a reflection of the test voltage pulse in an electric system connected to the power electronic converter. The control system is configured to control the operation of the power electronic converter at least partly in accordance with information based on the detection of the reflected voltage. The information can be used for example for determining forbidden voltage pulse lengths which would cause reflection-based over-voltages and/or for detecting faults such as short circuits and earth faults.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.