Method and apparatus for detecting shortcircuit in arm of GTO inverter
US4384248A · kind A · utility
16Cited by
6References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 17, 1980 |
| Grant date | May 17, 1983 |
| Priority date | — |
| Expiry date | Jun 17, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/52
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Shortcircuit in an arm including a series connection of GTO's and reactors of an inverter is detected by sensing a voltage across the reactor. In one method, the shortcircuit in the arm is detected when voltages are coincidently applied to a P-line arm reactor and an N-line arm reactor for a predetermined time period. In another method, it is detected when an integrated value of a voltage across at least one of the reactors exceeds a predetermined level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.