Design of a 48V electric all-wheel-drive system for a hybrid vehicle

摘要

This paper proposes an numerical design-optimization procedure for an 48 V induction machine implemented in a hybrid vehicle. Based on the scaling laws of the induction machine, the utilization of the equivalent fuel consumption calculation and the Willans approach an Evolutionary Strategy is used to find the optimum induction machine design. The scaling of the induction machine considers axial and radial scaling as well as rewinding. Furthermore, a change of the gear ratio of the hybrid power train is considered. By using a hybrid vehicle model the optimized induction machines are analyzed due to their consumption savings potential. To define the power distribution of the combustion engine and the 48 V electric machine the equivalent consumption minimization strategy is used.