Current switching device with IGCT
US9503082B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 21, 2014 |
| Grant date | Nov 22, 2016 |
| Priority date | — |
| Expiry date | Sep 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K17/0412
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An exemplary current switching device includes an integrated gate-commutated thyristor with an anode, a cathode, and a gate, wherein a current between the anode and the cathode is interruptible by applying a switch-off voltage to the gate; and a gate unit for generating the switch-off voltage. The gate unit and a connection of the gate unit to the gate establish a gate circuit having a stray impedance. The gate unit is adapted for generating a spiked switch-off voltage with a maximum above a breakdown voltage (VGRMAX) between the cathode and the gate, such that the switch-off voltage at the gate stays below the breakdown voltage (VGRMAX) due to the stray impedance of the gate circuit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.