Method for producing rectifier with switches of asymmetric voltage breakdown strengths
US4059792A · kind A · utility
2Cited by
3References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 30, 1975 |
| Grant date | Nov 22, 1977 |
| Priority date | — |
| Expiry date | Sep 30, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/19
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rectifier for a medium voltage rectifier system as well as for high voltage-direct current transmission includes a plurality of thyristor switches. The switches have asymmetric voltage breakdown strengths, the asymmetry being at least 10% for the forward blocking direction compared with the reverse blocking direction. The thyristor switches are dimensioned voltage-wise to safely block even long lasting overvoltages in both the forward and reverse blocking directions occurring during operation and to withstand momentary surge and switching voltages limited by an overvoltage suppressor in the reverse blocking direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.