External charging circuit for static switch
US3953786A · kind A · utility
0Cited by
8References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 29, 1971 |
| Grant date | Apr 27, 1976 |
| Priority date | — |
| Expiry date | Mar 29, 1991 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/5155
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A static switch including main and auxiliary SCR's has a commutating capacitor coupled between the common connections of these main and auxiliary SCR's. An independent external charging circuit is provided and connected to complete a charging path for the commutating capacitor which is isolated by at least one diode from the main d-c bus. This enables the commutating capacitor to charge to a level above that of the d-c bus voltage and maintain effective commutation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.