2017, vol9, N°3
A LA UNE
Battery Systems Engineering
Christopher D. Rahn, Chao-Yang Wang
IJEHV Citation Index
WELCOME TO ELECTRIC VEHICLES NEWS
Zhejiang Geely Holding Group completes acquisition of Terrafugia Inc
Zhejiang Geely Holding Group is pleased to announce it has entered into an agreement with Terrafugia Inc, a US-based company focused on the innovation, engineering and production of flying cars and future technologies, to acquire its operations and assets in
Battery-switching device promises more road time
Battery-switching device promises more road timeNissan Leafs, which go about 107 miles on a charge, sometimes end up relegated to commuter cars due to battery-life worries. The mass-market, standard Tesla Model 3 can go double that, but even that distance can
REPORTS AND STUDIES
Batteries and a Sustainable Modern Society
John B. Goodenough
After outlining the urgent need for realization of clean
electrical energy generated by the sun for a sustainable
modern society and the constraints of electrochemistry
for this realization in a low-cost, safe rechargeable battery
of long cycle life, recent advances in materials chemistry
are outlined that provide an optimistic view that this realization may
be possible in the relatively near future.
A study on automated traction control system of an electrical golf car
Ataur Rahman, A.K.M. Mohiuddin, Sany Izan Ihsan
Int. J. of Electric and Hybrid Vehicles
2010 Vol.3, No.1 pp 47 - 61
This study presents an automated traction control system (ATCS) without incorporating the function of hydraulic system. The ATCS is used for improving the vehicle performance in terms of stability and torque or speed needed in order to produce smooth driving. Driving motor and wheel speed sensor (WSS) with RPM meter are used in this study to develop the sufficient torque or speed on demand of the driving wheel. The current flow is controlled to the driving motor with the help of electronic proportional valve. A slope sensor is used in the proposed system to enhance the power supply to the driving motor when the vehicle will be in the grade of 10%-20%. SolidWorks simulation and laboratory experiment has been performed to investigate the performance of the designed and developed automated traction control system on the dry and slippery surface.
(more scientific papers)
November 22-23, 2017
Light Electric Vehicle Summit - LEVS
With nearly 160 participants coming from 25 different countries and more than 70 high quality presentations, the 1 st LEVS was clearly a success !
The Summit has achieved its objective and appointment is already made for a second edition in Rotterdam, Netherlands
22-23 november 2017,
Find out more about the event : http://www.levs.mobi/.
A Systematic Approach to Hybrid Electric Vehicle Modeling
The modeling and simulation of vehicles is an essential stage in the design process. Early design stages focus of energy-modeling, where many component dynamics are ignored and the models only compute the energy flow through the models. This allows for quick simulations and changing of component parameters, but as the design process progresses, a need for more detailed models arises. This thesis focuses on modeling and simulations of subsystems that are unique to hybrid electric vehicles, the battery, electric machine, and inverter. Battery modeling was divided into three subsystems, electrical, thermal and aging. Electrical models predict the battery voltage and state of charge. Thermal models predict the battery temperature. Aging models predict the loss in capacity and increase in resistance. The different combinations of battery, electric machine, and inverter models were simulated using a vehicle simulator of a wheel loader. The differences in fuel consumption, simulation time, battery SOC and battery capacity loss were analyzed and compared. The causes of the differences were determined, and the impact of each model fidelity was systematically and objectively evaluated.
The Ohio State University, USA