Topology of a solid state power controller with two mid-capacitors
US11374400B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Dec 1, 2020 |
| Grant date | Jun 28, 2022 |
| Priority date | — |
| Expiry date | Feb 15, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A bi-directional direct current (DC) solid state power controller (SSPC) architecture and control method. The SSPC protects a DC distribution system by isolating both the positive and negative buses independently in case of short circuit or ground fault. The SSPC architecture includes two self-heal interleaved capacitors and includes a fast, soft-charging control technique that provides line-isolated charging of the DC bulk capacitor to avoid inrush current when powering up the DC distribution system. The soft-charging function alternately charges one of the two interleaved capacitors, while the other capacitor discharges to the DC bulk capacitor. Repetitive switching results in a charging and discharging process that increases the voltage of the DC bulk capacitor prior to powering up the DC distribution system, while keeping the DC power source isolated from the load.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.