This paper presents the experimental evaluation of SiC MOSFETs from different manufacturers operated in avalanche. A setup was developed to test the devices under such condition. The reliability of SiC MOSFETs have been compared.
Charge accumulation on solid insulator in Gas Insulated Substation (GIS) is one of the major issues under Direct Current (DC). A specific device has been developed in order to assess the origin of such charges within SF6, in a coaxial geometry.