Investigation of the Influence of Rolling Resistance Model Approaches on Simulated Consumption/Range

The proportionate contribution of rolling resistance to consumption and range has increased due to the high energy efficiency of battery electric vehicles (BEV). However, rolling resistance is often considered in a rudimentary manner to simulate the vehicle drive demand at the electric drivetrain. This study examines the influence of different levels of detail in a rolling resistance model on consumption and range simulations of BEV. Therefore, based on measurement data from a whole vehicle flat-belt dynamometer, several rolling resistance models were created. These range from a fixed rolling resistance according to ISO 28580 to transient rolling resistance models. The presented method demonstrates an approach to build a robust rolling resistance model by using statistical experiment design and a sensitivity analysis. The influence of a rolling resistance model’s level of detail on simulated consumption and range is evaluated by simulating different cycles under various tire conditions with the whole vehicle simulation of the Volkswagen AG.