Discharge of an AC capacitor
US11251696B2 · kind B2 · utility
1Cited by
3References
31Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 2020 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | May 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/1555
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A circuit includes two thyristors coupled in anti-series. An AC capacitor has first and second electrodes respectively coupled to two different electrodes of the two thyristors. The first and second electrodes are coupled to receive an AC voltage. A control circuit detects discontinuance of application of the AC voltage to the AC capacitor and in response thereto simultaneously applies same gate currents to the two thyristors. A current path through the two thyristors (one passing current in forward mode and the other in reverse mode) discharges a residual voltage stored on the AC capacitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.