Multi physical domain simulation of a NVH reduction system for a generator-electric vehicle

The limited range and high costs of battery-electric vehicles currently slow down their market impact. A concept for a new low emission generator-electric vehicle (GEV) has been developed and realized that combines transverse flux electric drives and a highly efficient power generator. The power supply works continuously and much more efficient than in traditional power generation industries, delivering unmatched driving distances and carbon footprint. The modified drive causes a significant change of the NVH behavior of the vehicle. In this paper passive and active measures to increase comfort and reduce airborne as well as structure borne noise are considered. A systematic approach to model, simulate and assess multi physical domain systems is presented. In system simulation, the excitation, mechanical structures, sensors, signal processing and actuator systems are included. The interaction between mechanical, electrical and acoustic domain is taken into account and the performance of vibration reduction measures is evaluated. Diverse modeling approaches, such as order reduced finite element modeling, system identification and analytical description are combined. The model of the generator-electric vehicle is tested and simulation results are presented.