Simulation and Measurements concerning the Thermal and Efficiency Behavior of the “HeAD” Automotive Drive

Abstract

In this paper the latest results of the collaborative HeAD (High performance electrical Austrian Drivetrain) project related to the thermal and efficiency behavior are presented. The consortium has developed a highly integrated electric axle drive with a high speed electric machine. Because of a high integration level combined with a compact size a holistic thermal consideration and investigation of thermal insights were defined by the key task thermal management. The HeAD e-axle design, simulation results and selected experimental results are presented. Stationary and transient temperature tests confirm the expected fundamental thermal behavior related to a high integration level and allow developing accurate thermal models in further research activities.