2000 V Class LV100 IGBT Module Enabling Higher Power Density and Design Simplification in Renewable 1500 V Inverter Systems

Inhalt:
Conventionally available IGBTs with 1700 V blocking voltage are designed for the requirements of motor control application in 690 Vac network where dc-link voltage is typically about 970 V and maximum below 1200 V. For renewable applications higher dc-link voltage is required going up to 1500 V which is the limit of the low voltage directive (2014/35/EU). Hence a new 2000 V class IGBT in the LV100 housing has been evaluated under the requirements of renewable applications such as photovoltaic and wind energy converters. The new 2000 V class IGBT solution has been compared with available options like 1700 V class IGBT or 1200 V class IGBTs in a 3-level NPC topology regarding power losses, operation temperatures, power density, mechanical design constraints and long term DC bias stability (LTDS).