Insulated gate bipolar transistor fault protection system
US7817392B2 · kind B2 · utility
3Cited by
8References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2007 |
| Grant date | Oct 19, 2010 |
| Priority date | — |
| Expiry date | Jul 30, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K2217/0027
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An Insulated Gate Bipolar Transistor (IGBT) fault protection system is provided. The fault protection system includes a GVPA, a gate voltage clamper, and a soft-off unit. The GVPA analyzes a gate voltage pattern of an IGBT to determine whether or not a fault has occurred. The gate voltage clamper prevents an increase in a gate voltage of the IGBT according to an output signal that the GVPA outputs when a fault has occurred. The soft-off unit softly turns off the IGBT according to an output signal that the GVPA outputs when a fault has occurred.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.