Fault current controller for a direct current power grid
US11190007B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Oct 1, 2020 |
| Grant date | Nov 30, 2021 |
| Priority date | — |
| Expiry date | Oct 1, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/025
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Disclosed is a fault current controller for a direct current power grid, which includes a primary circuit and a controller. The primary circuit includes an inductor, a filter capacitor, a resistor, an IGBT switch, a diode, a contactor and a Hall current sensor. The inductor, a first resistor and a second contactor are connected in series and are connected to a first contactor in parallel. A first branch including a second resistor and a first diode, a second branch including a third resistor and a second diode, and the inductor are connected in parallel; the filter capacitor, the IGBT switch and the first resistor are connected in parallel. The Hall current sensor is arranged in the series circuit. The controller controls the IGBT switch and the two contactors in the primary circuit to form different on-off combinations.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.