A new IGBT module for megawatt class 380VAC to 690VAC grid tie inverters

This paper presents a new high power dual IGBT module package designed for megawatt class utility interface inverters operating in the 380VAC to 690VAC range. This new module utilizes the latest high efficiency power chips and features maximum current ratings of 2500A at 1200V or 1800A at 1700V. A new aluminum to aluminum nitride to aluminum direct bonded baseplate structure has been developed to increase reliability while reducing weight. The power chip layout has been optimized for efficient thermal management in both liquid and air cooled configurations. A novel four layer internal bus structure was developed to provide extremely low inductance for minimization of surge voltages. This paper will describe the design features, characteristics, and performance of this new module.