Charging management for full electric vehicles in the mobility-on-demand-concept “fahrE” using local renewable energy

Abstract

Unavoidably, the aim of ecologically sustainable driving leads to the use of full electric vehicles (FEVs) and a charging process based on renewable energy. In addition to the ecologically sustainable charging, the additional and high-power load of FEVs in distribution grids can cause problems like overload of electrical equipment and deviations of the preset voltage band. To limit the load and maximize the usage of renewable energy, a management system has to be developed. In this paper, a management system is introduced with the special challenges of mobility-on-demand-concepts, which is one of the main fields of application for FEVs in the early adoption phase. In this system, the real existing local renewable energy, the limit of the electrical equipments, and the permanent availability of mobility influence a charge signal, which is the core of the proposed management. The first results show that the developed management is capable to double the renewable percentage of charging energy in comparison to a dump charging.