Solid-state protection for direct current networks
US11101640B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2020 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jul 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/1257
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Systems, methods, techniques and apparatuses of fault protection. One exemplary embodiment is a protection system including a solid-state switching device, a galvanic isolation switching device, and a controller. The solid-state switching device is coupled between a switch arrangement of a power converter and a direct current (DC) link capacitor of the power converter. The galvanic isolation switching device is coupled between the DC link capacitor and a DC network. The controller is structured to determine a fault is occurring within the DC network, open the solid-state switching device in response to determining the fault is occurring, receive a measurement corresponding to an electrical characteristic of a fault current flowing through the galvanic isolation switching device while the solid-state switching device is open, and determine a location of the fault based on the received measurement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.