Sistema de direção elétrica assistida para veículos elétricos e híbridos utilizando motor de indução trifásico

Abstract

Environmental issues have become over the years one of the major global concerns, in particular, issues related to the emissions generated by the vehicular fleet in the cities, due to the increased number of vehicles. The automotive market in turn, through regulatory incentives and regulations, are increasingly investing in solutions to reduce emission levels of their vehicles, or even, projects of vehicle with zero emission, for exemple, vehicles 100% electric. The development of new projects to meet the regulatory standards of the vehicles, normally starts with the drive system, as they are the major emitters of pollutants due to burning fuel. With the improved drive system and implementation of a after treatment systems, it is necessary, to optimize the auxiliary equipment of the vehicle, with the intuited to further reduce engine power demand and consequently, reducing emissions levels and improving the efficiency. The focus of this paper is over one of the auxiliary equipment of the vehicle, the electric hydraulic power steering system for heavy vehicles, used in conventional internal combustion engine (ICE) vehicles, such as, electric vehicles (EVs), hybrid electric vehicles (HEVs) and plug-in hybrid electric vehicles (PHEVs). The paper will present the dimensioning, communication and the assembly of electric hydraulic power steering system in a hybrid bus. It will further be realized a functional test, with the aim of optimizing the efficiency and operation compared to conventional systems coupled to the conventional internal combustion engine.