Y-capacitance fault current discharge compensation for HVDC systems
US7355831B2 · kind B2 · utility
16Cited by
1References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2005 |
| Grant date | Apr 8, 2008 |
| Priority date | — |
| Expiry date | Apr 27, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H9/041
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fuel cell system or HVDC power source includes a fuel cell or DC power source having a high voltage direct current (HVDC) bus including y-capacitors, which connect the HVDC bus terminals to chassis or safety ground, and a fault current discharge compensation circuit interconnected with the HVDC bus. A monitoring circuit monitors a fault discharge current of the Y-cap circuit and generates a fault signal when the fault current occurs based on a rate of change of a voltage of the Y-cap circuit. A switching circuit redirects the majority of the fault discharge current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.