Compact Power Module for Integrated Traction Inverters with Highest Power Density

Abstract:
Mechatronic integration of power electronic components and mechanical assemblies is a core element to achieve higher levels of power density. The world of electric mobility, may it be in the format of a battery electric vehicle (BEV) or blended with a combustion engine making up plug-in-hybrid (PHEV) cars, is desiring for improved power density and even tighter packaging [1], [2]. Merging of inverters and electrical traction motors in particular will be a key enabler to improving the drives package density. More robust and mechanically proof semiconductor power modules are then required to live up to increased requirements. Vibration loading and significant temperature excursions are the foremost challenges to withstand. Furthermore restrictions of motor design require flexible module geometry and terminal layout, required to adapt to the overall drivetrain architecture.