Battery operated electric vehicles (BEVs) offer the opportunity of running a zero-emission car fleet. However, due to their current range constraints, electric vehicle operations are mainly attractive for inner-city transport, such as the taxi business. This paper is bringing together facts and assumptions about Berlin’s taxi transport and the current conditions of BEVs in Germany to provide th...

Range anxiety and battery cycle life are two major factors which restrict the development of electric vehicles. Battery degradation can be reduced by adding supercapacitors to create a Hybrid Energy Storage System. This paper proposes a systematic approach to configure the hybrid energy storage system and quantifies the battery degradation for electric vehicles when using supercapacitors. A con...

for the urban transportation because of their sustainability, High torque, low volume, zero emission and energy saving. Electric scooter can go certain limit of distance based on the battery capacity it consists. This paper presents the model construction of an energy regenerative electric scooter via MATLAB/SIMULINK so that one can evaluate the performance of the energy recycling technique for...

Battery is a vital subsystem in an electric vehicle with regenerative braking system. The energy efficiency of an electric vehicle is improved by storing the regenerated energy in an electric battery, during braking, and reusing it during subsequent acceleration. Battery possesses a relatively poor power density and slow charging of regenerated energy, when compared to hydro-pneumatic accumulat...

Electric vehicles play a key role for developing an eco-sustainable transport system. One critical component of an electric vehicle is its battery, which can be quickly charged or exchanged before it runs out. The problem of electric vehicle dispatching falls into the category of the shortest path problem with resource renewal. In this paper, we study the shortest path problems in (1) electric ...

Resistive companion (RC) modeling is an easy-to-use approach for electric circuit simulations. With a RC numerical solver, simulations of complex electric systems can be achieved based on RC models. In this study, the construction of RC battery models is investigated. A general battery model and a nickel±metal hydride cell model have been built. Simulations of RC battery models on virtual test ...

In the process of battery system design and operation, accurate battery modelling is a key factor. Generally speaking, the electric characteristics of a given battery cell are necessary for a designer to build an equivalent circuit model. The equivalent circuit design entails the creation of both the sizing of components used in the circuit and the topology. So, it is very hard to build an accu...

The exchange of the energy storage unit from an electric vehicle is considered as an alternative to in-vehicle battery charging or regeneration. If the exchange process is mechanically assisted or automated, the exchange can be accomplished in much less time than that required for in-vehicle charging. Many means for accomplishing battery exchange have been proposed or attempted, with various de...

During the last years, the development of electric propulsion systems is pushed strongly, most notably for automotive applications. For ground based transportation, the system mass is relevant, but of relatively low importance. This paper addresses the application of electric propulsion systems in aeronautics, where all systems are much more constrained by their mass. After comparing different ...