Artificial stable short circuit failure mode function by using parallel modules for each switching function
US10971994B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2019 |
| Grant date | Apr 6, 2021 |
| Priority date | — |
| Expiry date | Aug 19, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M1/325
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The application discloses an arrangement of switches for a voltage source converter cell, the voltage source converter cell having two AC terminals, wherein the arrangement of switches forms a number of parallel series circuits (branches, current paths), wherein the switches in each of the series circuits paths are being controlled by external signals to alter a conductivity status of the switches between an “ON”-state and an “OFF”-state. The external signals are generated by one or more control units, and the two AC terminals are each connected to subsets of the series circuits of the switches. The control units comprises failure detection means, the failure detection means being adapted to determine a defective switch in the series circuits by predetermined conditions. The control units are further configured to output a control signal to alter a conductivity condition of each of the switches in the series circuits in such a manner, that a short circuit between the two AC terminals is created, if one of the switches is determined as being defective according to the predetermined conditions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.