Analysing the Impact of Different Electric Traction Drives on the Vehicle's Energy Consumption Using HiL Simulation

Abstract

Currently electric vehicles are introduced in public transport and individual traffic in order to reduce for example the noise and the green house gas emissions. Beside the advantage of higher traction drive efficiency the main disadvantage of electric vehicles compared to vehicles with conventional drive is the shorter operating distance. This is caused by the comparatively low energy density of the propulsion batteries. Thus these vehicles are especially suitable for urban short range usage scenarios, like e.g. taxi or delivery services. This paper focuses on the simulation of electric vehicles using a Hardware in the Loop (HiL) model of an electric vehicle traction system. The model consists of components used in electric vehicles. For analyzing the impact of different electric traction systems on the vehicle's energy consumption the model is scaled to different vehicle setups. Beside the setup scaling using the 960;-Theorem a method for the simulation of different electric traction systems and efficiency maps without changing the HiL setup is presented. Using the setup the impact of different electric drives on the energy consumption can be simulated and analyzed.