Subjects -> TRANSPORTATION (Total: 216 journals)
    - AIR TRANSPORT (9 journals)
    - AUTOMOBILES (26 journals)
    - RAILROADS (10 journals)
    - ROADS AND TRAFFIC (9 journals)
    - SHIPS AND SHIPPING (39 journals)
    - TRANSPORTATION (123 journals)

TRANSPORTATION (123 journals)                     

Showing 1 - 53 of 53 Journals sorted alphabetically
Accident Analysis & Prevention     Hybrid Journal   (Followers: 122)
Analytic Methods in Accident Research     Hybrid Journal   (Followers: 9)
Applied Mobilities     Hybrid Journal   (Followers: 3)
Archives of Transport     Open Access   (Followers: 18)
Asian Transport Studies     Open Access   (Followers: 1)
Botswana Journal of Technology     Full-text available via subscription   (Followers: 1)
Case Studies on Transport Policy     Hybrid Journal   (Followers: 16)
Cities in the 21st Century     Open Access   (Followers: 16)
Danish Journal of Transportation Research / Dansk Tidsskrift for Transportforskning     Open Access   (Followers: 3)
Decision Making : Applications in Management and Engineering     Open Access   (Followers: 2)
Economics of Transportation     Partially Free   (Followers: 14)
Emission Control Science and Technology     Hybrid Journal   (Followers: 2)
eTransportation     Open Access   (Followers: 2)
EURO Journal of Transportation and Logistics     Hybrid Journal   (Followers: 15)
European Transport Research Review     Open Access   (Followers: 24)
Geosystem Engineering     Hybrid Journal   (Followers: 2)
IATSS Research     Open Access  
IEEE Open Journal of Intelligent Transportation Systems     Open Access   (Followers: 8)
IEEE Vehicular Technology Magazine     Full-text available via subscription   (Followers: 7)
IET Electrical Systems in Transportation     Open Access   (Followers: 11)
IET Intelligent Transport Systems     Open Access   (Followers: 12)
IET Smart Cities     Open Access  
IFAC-PapersOnLine     Open Access   (Followers: 1)
International Journal of Applied Logistics     Full-text available via subscription   (Followers: 11)
International Journal of Crashworthiness     Hybrid Journal   (Followers: 12)
International Journal of e-Navigation and Maritime Economy     Open Access   (Followers: 6)
International Journal of Electric and Hybrid Vehicles     Hybrid Journal   (Followers: 11)
International Journal of Electronic Transport     Hybrid Journal   (Followers: 9)
International Journal of Heavy Vehicle Systems     Hybrid Journal   (Followers: 7)
International Journal of Intelligent Transportation Systems Research     Hybrid Journal   (Followers: 16)
International Journal of Mobile Communications     Hybrid Journal   (Followers: 9)
International Journal of Ocean Systems Management     Hybrid Journal   (Followers: 3)
International Journal of Physical Distribution & Logistics Management     Hybrid Journal   (Followers: 12)
International Journal of Services Technology and Management     Hybrid Journal   (Followers: 1)
International Journal of Sustainable Transportation     Hybrid Journal   (Followers: 19)
International Journal of Traffic and Transportation Engineering     Open Access   (Followers: 19)
International Journal of Transportation Engineering     Open Access   (Followers: 2)
International Journal of Transportation Science and Technology     Open Access   (Followers: 12)
International Journal of Vehicle Systems Modelling and Testing     Hybrid Journal   (Followers: 3)
Journal of Advanced Transportation     Hybrid Journal   (Followers: 16)
Journal of Big Data Analytics in Transportation     Hybrid Journal   (Followers: 2)
Journal of Intelligent and Connected Vehicles     Open Access   (Followers: 2)
Journal of Mechatronics, Electrical Power, and Vehicular Technology     Open Access   (Followers: 6)
Journal of Modern Transportation     Full-text available via subscription   (Followers: 9)
Journal of Navigation     Hybrid Journal   (Followers: 279)
Journal of Sport & Social Issues     Hybrid Journal   (Followers: 12)
Journal of Sustainable Mobility     Full-text available via subscription   (Followers: 3)
Journal of Traffic and Transportation Engineering (English Edition)     Open Access   (Followers: 5)
Journal of Transport & Health     Hybrid Journal   (Followers: 12)
Journal of Transport and Land Use     Open Access   (Followers: 26)
Journal of Transport and Supply Chain Management     Open Access   (Followers: 16)
Journal of Transport Geography     Hybrid Journal   (Followers: 28)
Journal of Transport History     Hybrid Journal   (Followers: 13)
Journal of Transportation and Logistics     Open Access   (Followers: 5)
Journal of Transportation Safety & Security     Hybrid Journal   (Followers: 10)
Journal of Transportation Security     Hybrid Journal   (Followers: 2)
Journal of Transportation Systems Engineering and Information Technology     Full-text available via subscription   (Followers: 12)
Journal of Transportation Technologies     Open Access   (Followers: 15)
Journal of Waterway Port Coastal and Ocean Engineering     Full-text available via subscription   (Followers: 8)
Journal on Vehicle Routing Algorithms     Hybrid Journal  
Les Dossiers du Grihl     Open Access   (Followers: 1)
LOGI ? Scientific Journal on Transport and Logistics     Open Access   (Followers: 1)
Logistics     Open Access   (Followers: 3)
Logistics & Sustainable Transport     Open Access   (Followers: 6)
Logistique & Management     Hybrid Journal  
Mobility in History     Full-text available via subscription   (Followers: 5)
Modern Transportation     Open Access   (Followers: 12)
Nonlinear Dynamics     Hybrid Journal   (Followers: 20)
Open Journal of Safety Science and Technology     Open Access   (Followers: 17)
Open Transportation Journal     Open Access   (Followers: 1)
Packaging, Transport, Storage & Security of Radioactive Material     Hybrid Journal   (Followers: 4)
Periodica Polytechnica Transportation Engineering     Open Access  
Pervasive and Mobile Computing     Hybrid Journal   (Followers: 8)
Proceedings of the Institution of Mechanical Engineers Part F: Journal of Rail and Rapid Transit     Hybrid Journal   (Followers: 15)
Promet : Traffic &Transportation     Open Access  
Public Transport     Hybrid Journal   (Followers: 20)
Recherche Transports Sécurité     Hybrid Journal   (Followers: 1)
Research in Transportation Business and Management     Partially Free   (Followers: 8)
Revista Transporte y Territorio     Open Access   (Followers: 1)
Revue Marocaine de Management, Logistique et Transport     Open Access  
Romanian Journal of Transport Infrastructure     Open Access   (Followers: 1)
SourceOCDE Transports     Full-text available via subscription   (Followers: 2)
Sport, Education and Society     Hybrid Journal   (Followers: 13)
Sport, Ethics and Philosophy     Hybrid Journal   (Followers: 3)
Streetnotes     Open Access   (Followers: 1)
Synthesis Lectures on Mobile and Pervasive Computing     Full-text available via subscription   (Followers: 1)
Tire Science and Technology     Full-text available via subscription   (Followers: 3)
Transactions on Transport Sciences     Open Access   (Followers: 7)
Transport     Open Access   (Followers: 17)
Transport and Telecommunication     Open Access   (Followers: 5)
Transport in Porous Media     Hybrid Journal   (Followers: 2)
Transport Problems     Open Access   (Followers: 5)
Transport Reviews: A Transnational Transdisciplinary Journal     Hybrid Journal   (Followers: 10)
Transport technic and technology     Open Access   (Followers: 1)
Transportation     Hybrid Journal   (Followers: 34)
Transportation Engineering     Open Access   (Followers: 1)
Transportation Geotechnics     Full-text available via subscription   (Followers: 1)
Transportation in Developing Economies     Hybrid Journal  
Transportation Infrastructure Geotechnology     Hybrid Journal   (Followers: 8)
Transportation Journal     Full-text available via subscription   (Followers: 17)
Transportation Letters : The International Journal of Transportation Research     Hybrid Journal   (Followers: 6)
Transportation Research Interdisciplinary Perspectives     Open Access   (Followers: 3)
Transportation Research Part A: Policy and Practice     Hybrid Journal   (Followers: 41)
Transportation Research Part B: Methodological     Hybrid Journal   (Followers: 39)
Transportation Research Part C: Emerging Technologies     Hybrid Journal   (Followers: 31)
Transportation Research Procedia     Open Access   (Followers: 7)
Transportation Research Record : Journal of the Transportation Research Board     Full-text available via subscription   (Followers: 36)
Transportation Safety and Environment     Open Access   (Followers: 2)
Transportation Science     Full-text available via subscription   (Followers: 26)
Transportation Systems and Technology     Open Access  
TRANSPORTES     Open Access   (Followers: 6)
Transportmetrica A : Transport Science     Hybrid Journal   (Followers: 9)
Transportmetrica B : Transport Dynamics     Hybrid Journal   (Followers: 1)
Transportrecht     Hybrid Journal   (Followers: 1)
Travel Behaviour and Society     Full-text available via subscription   (Followers: 12)
Travel Medicine and Infectious Disease     Hybrid Journal   (Followers: 4)
Urban Development Issues     Open Access   (Followers: 3)
Urban, Planning and Transport Research     Open Access   (Followers: 33)
Vehicles     Open Access  
Vehicular Communications     Full-text available via subscription   (Followers: 4)
World Electric Vehicle Journal     Open Access  
World Review of Intermodal Transportation Research     Hybrid Journal   (Followers: 6)
Транспортні системи та технології перевезень     Open Access  


Similar Journals
Journal Cover
World Electric Vehicle Journal
Number of Followers: 0  

  This is an Open Access Journal Open Access journal
ISSN (Online) 2032-6653
Published by MDPI Homepage  [233 journals]
  • WEVJ, Vol. 9, Pages 35: V2G—An Economic Gamechanger in

    • Authors: Jens Christian Morell Lodberg Høj, Lasse Thorbøll Juhl, Søren Bernt Lindegaard
      First page: 35
      Abstract: The Vehicle-2-grid (V2G) technology enabling bidirectional charging between electric vehicles and the energy grid system for frequency regulation and load balancing has the potential of significantly improving the financial viability of electric mobility. This paper has identified that the introduction of V2G offers a plethora of potentially beneficial business models, which primarily focus on providing stability services to the energy grid and optimizing the economic benefits of owning an EV. Within these overarching categories, it is likely that several niche business models will emerge, as the current V2G concepts include the integration of intermittent renewable energy into the grid, reduction of peak load, charging optimization, and regulation of participating capacity. Most important is the balancing of the five market factors in order to create a profitable business case, as this is what makes V2G move from a potential revenue generator to a profitable business.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-21
      DOI: 10.3390/wevj9030035
      Issue No: Vol. 9, No. 3 (2018)
  • WEVJ, Vol. 9, Pages 36: A Survey on User Acceptance of Wireless Electric
           Vehicle Charging

    • Authors: Daniel Fett, Axel Ensslen, Patrick Jochem, Wolf Fichtner
      First page: 36
      Abstract: This study presents results of a survey-based analysis on user acceptance of wireless electric vehicle charging. A structural equation model is developed based on Davis’ technology acceptance model (TAM). It is expanded integrating elements of Ajzen’s theory of planned behavior (TPB). The main factors influencing acceptance of wireless electric vehicle charging are evaluated and analyzed. Empirical findings indicate that survey participants’ acceptance of wireless electric vehicle charging is mainly influenced by affective evaluations of wireless charging, subjective norms, perceived usefulness of wireless charging, and environmental awareness. The results indicate a high degree of acceptance for wireless charging. Even individuals with lower degrees of acceptance are willing to use wireless charging within car-sharing or commercial fleets.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-22
      DOI: 10.3390/wevj9030036
      Issue No: Vol. 9, No. 3 (2018)
  • WEVJ, Vol. 9, Pages 37: New Approach for an Easily Detachable Electric
           Drive Unit for Off-the-Shelf Bicycles

    • Authors: Felix Roemer, Marius Mrosek, Simon Schmalfuss, Markus Lienkamp
      First page: 37
      Abstract: While an increasing number of electric bicycles are sold, the majority is still conventional, i.e., pedal powered.Electric bicycles could raise the share of people cycling in place of more inefficient modes of transportation. This paper investigates and proposes a new approach for an electric drive unit that can easily be attached and detached to a large majority of existing off-the-shelf bicycles to convert them into legal electric assisted bicycles (pedelecs). Different drive mechanisms were investigated and a design with a friction roller at the rear wheel showed the greatest potential. A good solution is achieved with a single unit that incorporates batteries, electronics, motors and sensors in a single enclosure to minimize the mounting time. With a fastening on the seat stay tube using a simple clamp mechanism it can assist the cyclist on most existing bicycles. The legally-required pedal detection is done with an integrated proximity sensor. A prototype is built to prove a simple and nonspecific installation and convenient usage.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-23
      DOI: 10.3390/wevj9030037
      Issue No: Vol. 9, No. 3 (2018)
  • WEVJ, Vol. 9, Pages 38: Policy Considerations for Zero-Emission Vehicle
           Infrastructure Incentives: Case Study in Canada

    • Authors: Azadeh Maroufmashat, Michael Fowler
      First page: 38
      Abstract: Transportation accounts for more than 20% of the total Greenouse Gas (GHG) emissions in Canada. Switching from fossil fuels to more environmentally friendly energy sources and to Zero-Emission Vehicles (ZEVs) is a promising option for future transportation but well to wheel emission and charging/refuelling patterns must also be considered. This paper investigates the barriers to and opportunities for electric charging and hydrogen refueling infrastructure incentives in Ontario, Canada and estimates the number of Internal Combustion Engine Vehicles (ICEVs) that would be offset by infrastructure incentives. The paper also assesses the potential of electric and hybrid-electric powertrains to enable GHG reductions, explores the impact of the electricity supply mix for supporting zero-emission vehicles in different scenarios and studies the effect of the utility factor for PHEVs in Ontario. The authors compare the use of electric vehicle charging infrastructures and hydrogen refueling stations regarding overall GHG emission reductions for an infrastructure incentive funded by a 20-million-dollar government grant. The results suggest that this incentive can provide infrastructure that can offset around 9000 ICEVs vehicles using electricity charging infrastructure and 4000–8700 when using hydrogen refuelling stations. Having appropriate limitations and policy considerations for the potential 1.7 million electric-based vehicles that may be in use by 2024 in Ontario would result in 5–7 million tonne GHG avoidances in different scenarios, equivalent to the removal of 1–1.5 million ICEVs from the road.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-23
      DOI: 10.3390/wevj9030038
      Issue No: Vol. 9, No. 3 (2018)
  • WEVJ, Vol. 9, Pages 16: Online Multi Chemistry SoC Estimation Technique
           Using Data Driven Battery Model Parameter Estimation

    • Authors: Lysander De Sutter, Alexandros Nikolian, Jean-Marc Timmermans, Noshin Omar, Joeri Van Mierlo
      First page: 16
      Abstract: Kalman filters have shown to be a very accurate and robust method for State of Charge estimation. However, their performance depends heavily on the accuracy of the used battery model and its parameters. These battery model parameters have shown to vary with the State of Health, cell chemistry, temperature and load current. This paper studies a data driven battery model parameter estimation technique based on the recursive least squares method as an alternative to extensively characterizing every cell of interest with time-consuming test procedures. The performance of two commonly used electrical models is compared and extensively validated on three different cell chemistries (Nickel Cobalt Manganese, Lithium Iron Phosphate and Lithium Titanate Oxide), under load conditions of varying dynamic nature representative for electric vehicle (EV) applications, using a Dynamic Discharge Pulse Test (DDPT) and the Worldwide harmonized Light vehicles Test Procedure (WLTP). The developed model is able to identify and update battery model parameters online, for three different chemistries, potentially reducing offline characterization efforts and allowing monitoring of battery electrical behavior and state estimation over its entire lifetime.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-22
      DOI: 10.3390/wevj9020016
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 17: Estimating the Charging Profile of Individual
           Charge Sessions of Electric Vehicles in The Netherlands

    • Authors: Jerome Jacob Mies, Jurjen Rienk Helmus, Robert van den Hoed
      First page: 17
      Abstract: The mass adoption of Electric Vehicles (EVs) might raise pressure on the power system, especially during peak hours. Therefore, there is a need for delayed charging. However, to optimize the charging system, the progression of charging from an empty battery to a full battery of the EVs, based on real-world data, needs to be analyzed. Currently, many researchers view this charging profile as a static load and ignore the actual charging behavior during the charging session. However, this study investigates how different factors influence the charging profile of individual EVs based on real-world data of charging sessions in The Netherlands, and thereby enable optimization analysis of EV smart charging schemes.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-22
      DOI: 10.3390/wevj9020017
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 18: A Method for the Quantification of Powertrain
           Electrification Impacts on Driving Dynamics

    • Authors: Markus Kraft, Stephan Rinderknecht
      First page: 18
      Abstract: This paper discusses a novel simulation-based study quantifying the impacts of driving dynamics in the electrification of conventional powertrains into hybrid powertrains. Towards this aim, the Fourier amplitude sensitivity test (FAST) is used to facilitate sensitivity analysis. Design of experiments and artificial neural network methods are employed to approximate the solution space to ensure a computationally efficient application of the FAST. To demonstrate this method, a simulation-based study was conducted to evaluate the electrification impacts in a challenging driving dynamic investigation scenario.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-27
      DOI: 10.3390/wevj9020018
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 19: Dimensioning and Optimization of Hybrid Li-Ion
           Battery Systems for EVs

    • Authors: Jan Becker, Thomas Nemeth, Raphael Wegmann, Dirk Uwe Sauer
      First page: 19
      Abstract: Commercial electric vehicles nowadays are powered by a battery system containing one kind of lithium-ion battery cell. Due to the fixed ratio of the cells’ maximum power to nominal energy, the possibilities for designing power and energy of the battery pack independently are limited. The battery system’s energy and maximum power can only be scaled by adapting the number of cells and modules, and the parameters furthermore depend on the characteristics of the cells used. Additional power electronics in the form of one or more dc/dc converters can be used to form a hybrid battery system comprised of more than one pack and different cell technologies. This allows for individually designing each battery pack and thus optimizing the overall battery system specification. This work presents a battery dimensioning and optimization approach for single pack and hybrid battery systems. It is based on an evolutionary optimization algorithm and a detailed, modular Matlab-Simulink vehicle model. Studies on the advantages of hybrid batteries for different vehicle classes were carried out. Results indicate that optimized hybrid battery systems can lead to weight and volume savings and further advantages in total cost of ownership, for example, by enhanced battery life time or reduced investment costs. On the other hand, they require more complex control logic, which is also discussed in this paper.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-28
      DOI: 10.3390/wevj9020019
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 20: Inhomogeneities in Battery Packs

    • Authors: Steven Neupert, Julia Kowal
      First page: 20
      Abstract: The market of accumulator based technologies is changing very fast, especially the electro mobility market due to different decisions made to reduce the impact on climate change. In most markets battery packs are used, which means accumulators are connected to form a battery system consisting of, from a few accumulators up to thousands. Research of battery technologies often focuses on single cells, however considering the applications it is important to know the behaviour of different cells in a system. This paper deals with the inhomogeneities which influence the electrical behaviour of the system in simulation and measurement with a special focus on parallel connected cells.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-28
      DOI: 10.3390/wevj9020020
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 21: Load Shifting Potentials of Plug-In Electric
           Vehicles—A Case Study for Germany

    • Authors: Julia Michaelis, Till Gnann, Anna-Lena Klingler
      First page: 21
      Abstract: Plug-in electric vehicles are the currently favoured option to decarbonize the passenger car sector. However, a decarbonisation is only possible with electricity from renewable energies and plug-in electric vehicles might cause peak loads if they started to charge at the same time. Both of these issues could be solved with coordinated load shifting (demand response). Previous studies analysed this research question by focusing on private vehicles with domestic and work charging infrastructure. This study additionally includes the important early adopter group of commercial fleet vehicles and reflects the impact of domestic, commercial, work, and public charging. For this purpose, two models are combined that capture the market diffusion of electric vehicles and their charging behaviour (ALADIN), as well as the load shifting potential of several new energy technologies (eLOAD). In a comparison of three different scenarios, we find that the charging of commercial vehicles does not inflict evening load peaks in the same magnitude as purely domestic charging of private cars does. Also, for private cars, charging at work occurs during the day and may reduce the necessity of load shifting while public charging plays a less important role in total charging demand as well as load shifting potential. Nonetheless, demand response reduces the system load by about 2.2 GW or 2.8% when domestic and work charging are considered when compared to a scenario with only domestic charging where a new peak might be created in the winter hours due to load shifting into the night.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-30
      DOI: 10.3390/wevj9020021
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 22: Joining Technologies for Automotive Battery
           Systems Manufacturing

    • Authors: Abhishek Das, Dezhi Li, David Williams, David Greenwood
      First page: 22
      Abstract: An automotive battery pack for use in electric vehicles consists of a large number of individual battery cells that are structurally held and electrically connected. Making the required electrical and structural joints represents several challenges, including, joining of multiple and thin highly conductive/reflective materials of varying thicknesses, potential damage (thermal, mechanical, or vibrational) during joining, a high joint durability requirement, and so on. This paper reviews the applicability of major and emerging joining techniques to support the wide range of joining requirements that exist during battery pack manufacturing. It identifies the advantages, disadvantages, limitations, and concerns of the joining technologies. The maturity and application potential of current joining technologies are mapped with respect to manufacturing readiness levels (MRLs). Further, a Pugh matrix is used to evaluate suitable joining candidates for cylindrical, pouch, and prismatic cells by addressing the aforementioned challenges. Combining Pugh matrix scores, MRLs, and application domains, this paper identifies the potential direction of automotive battery pack joining.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-05
      DOI: 10.3390/wevj9020022
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 23: Factors Influencing Energy Consumption and
           Cost-Competiveness of Plug-in Electric Vehicles

    • Authors: Severin Kamguia Simeu, Jens Brokate, Thomas Stephens, Aymeric Rousseau
      First page: 23
      Abstract: The widespread adoption of plug-in electric vehicles (PEVs) will depend on public appreciation of the potential savings in ownership costs that PEVs offer over conventional, internal combustion energy vehicles (ICEVs) and hybrid electric vehicles (HEVs), including fuel savings. This study compares the energy consumption and estimated ownership costs of various technologies for multiple drive cycles in the United States and the European Union; identifies and quantifies the impacts of the main parameters influencing the ownership costs of PEVs in comparison with other powertrains for different timeframes, vehicle classes, and technologies; and assesses under what combinations of parameters the cost of PEVs can be competitive with other powertrains.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-11
      DOI: 10.3390/wevj9020023
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 24: Sustainability Assessment of Second Use
           Applications of Automotive Batteries: Ageing of Li-Ion Battery Cells in
           Automotive and Grid-Scale Applications

    • Authors: Andreas Podias, Andreas Pfrang, Franco Di Persio, Akos Kriston, Silvia Bobba, Fabrice Mathieux, Maarten Messagie, Lois Boon-Brett
      First page: 24
      Abstract: The Sustainability Assessment of Second Life Applications of Automotive Batteries (SASLAB) exploratory research project of the European Commission’s Joint Research Centre (JRC) aims at developing and applying a methodology to analyse the sustainability of deploying electrified vehicles (xEV) batteries in second use applications. A mapping of industrial demonstration and publicly-funded research projects in the area is presented, followed by an experimental assessment of the capacity and impedance change of lithium-ion cells during calendar and cycle ageing. Fresh cells and cells aged in the laboratory, as well as under real-world driving conditions, have been characterised to understand their application-specific remaining lifetime, beyond the 70% to 80% end-of-first-use criterion. For this purpose, pre-aged cells were examined under duty-cycles that resemble those of second use grid-scale applications.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-18
      DOI: 10.3390/wevj9020024
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 25: Performance of Electric Vehicle Charging
           Infrastructure: Development of an Assessment Platform Based on Charging

    • Authors: Simone Maase, Xiomara Dilrosun, Martijn Kooi, Robert van den Hoed
      First page: 25
      Abstract: Developers of charging infrastructure, be it public or private parties, are highly dependent on accurate utilization data in order to make informed decisions where and when to expand charging points. The Amsterdam University of Applied Sciences, in close cooperation with the municipalities of Amsterdam, Rotterdam, The Hague, Utrecht, and the Metropolitan Region of Amsterdam Electric, developed both the back- and front-end of a charging infrastructure assessment platform that processes and represents real-life charging data. Charging infrastructure planning and design methods described in the literature use geographic information system data, traffic flow data of non-EV vehicles, or geographical distributions of, for example, refueling stations for combustion engine vehicles. Only limited methods apply real-life charging data. Rolling out public charging infrastructure is a balancing act between stimulating the transition to zero-emission transport by enabling (candidate) EV drivers to charge, and limiting costly investments in public charging infrastructure. Five key performance indicators for charging infrastructure utilization are derived from literature, workshops, and discussions with practitioners. The paper describes the Data Warehouse architecture designed for processing large amounts of charging data, and the web-based assessment platform by which practitioners get access to relevant knowledge and information about the current performance of existing charging infrastructure represented by the key performance indicators developed. The platform allows stakeholders in the decision-making process of charging point installation to make informed decisions on where and how to expand the already existing charging infrastructure. The results are generalizable beyond the case study regions in the Netherlands and can serve the roll-out of charging infrastructure, both public and semi-public, all over the world.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-20
      DOI: 10.3390/wevj9020025
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 26: Mode 2 Charging—Testing and Certification for
           International Market Access

    • Authors: Dieter Hanauer
      First page: 26
      Abstract: This paper provides an analysis of the current IEC 62752 standard. Establishing measures to protect against electric shock is one of the major tasks in the development of safe electric appliances. For electric vehicles this is very important too, because they are movable and in a public area most of the time. Even during recharge of the batteries, it is very likely that the electric vehicle is accessible to playing children or other people. IEC 62752 is a standard for a product which connects the electric vehicle with a standard household socket. This connection is required to provide electricity to the on-board charger of the electric vehicle and is called Mode 2 charging. In this article, the complexity of worldwide standardization for eMobility products is shown. Because the development of these products is still going on, some special requirements of IEC 62752 are explained, and some unique tests are described to help development engineers to design a safe, reliable, and durable product.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-20
      DOI: 10.3390/wevj9020026
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 27: White Spots in Business and IT: An Explorative
           Study for E-Mobility Services

    • Authors: Dominik Martin, Niklas Kühl, Carola Stryja, Jan Haude
      First page: 27
      Abstract: E-mobility services are important enablers for the success of electric vehicles. In contrast to conventional mobility, where an ecosystem consisting of the vehicle and complementary services has been built up and has improved over decades, the ecosystem for e-mobility is far less advanced and still in its infancy. In order to get on the sustainable path to success in the steadily growing e-mobility market, innovative ideas are necessary which are not covered by existing service offerings. This paper therefore describes a study that explored opportunities for innovative e-mobility service business models through a systematic analysis. Furthermore, each e-mobility service depends on information technology (IT) support. Therefore, IT standardization is an important issue to consider in order to build up more complex services on top of basic services and further advance the e-mobility ecosystem. Consequently, this paper presents results from a survey conducted with 27 e-mobility experts from Germany to help identify necessary standardization gaps in the context of e-mobility services. The paper contributes to the existing body of knowledge by proposing a structured, repeatable method for identifying innovative business models and by offering insights into study results. In addition, gaps in the standardization of IT infrastructure that are important for the provision of existing e-mobility services are illustrated.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-23
      DOI: 10.3390/wevj9020027
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 28: Li-Ion Battery Lifetime Model’s Influence on the
           Economic Assessment of a Hybrid Electric Bus’s Operation

    • Authors: Egoitz Martinez-Laserna, Victor I. Herrera, Iñigo Gandiaga, Aitor Milo, Elixabet Sarasketa-Zabala, Haizea Gaztañaga
      First page: 28
      Abstract: The present paper is focused on the evaluation of the economic influence of a battery lifetime model upon the optimal sizing and energy management strategy of a dual energy storage system (ESS) composed of Lithium-ion batteries and supercapacitors. The operation of a Hybrid Bus is taken as a case study in order to evaluate the effects of battery lifetime models’ accuracy on ESS sizing and operation in a heavy-duty application. For this purpose, two different lifetime models (a Wöhler-curve-based model and a semi-empirical model) were applied in the multi-objective optimisation of a hybrid electric urban bus. Differences up to ca. 8% on the daily operation costs and ca. 25% on the dual ESS costs were estimated depending on the lifetime model considered for the optimisation.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-07-26
      DOI: 10.3390/wevj9020028
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 29: Vehicle Level Control Analysis for Voltec

    • Authors: Namdoo Kim, Sungwook Choi, Jongryeol Jeong, Ram Vijayagopal, Kevin Stutenberg, Aymeric Rousseau
      First page: 29
      Abstract: The next generation of the Volt vehicle with the new “Voltec” extended-range propulsion system was introduced into the market in 2016. The second-generation Volt’s powertrain architecture provides five modes of operation, including two electric vehicle operations and three extended-range operations. Vehicle testing was performed on a chassis dynamometer set within a thermal chamber at the Advanced Powertrain Research Facility at Argonne National Laboratory. The study first focused on assessing the improvement of the new Voltec system by comparing the system efficiency with the previous system. Second, control behavior and performance were analyzed under normal ambient temperature to understand the supervisory control strategy on the Voltec system based on the test data. The analysis focused on the engine on/off strategy, powertrain operation mode, energy management, and engine operating conditions. Third, test data from the control analysis were used to summarize the vehicle control logic.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-02
      DOI: 10.3390/wevj9020029
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 30: Taxation of Electric Vehicles in Europe: A
           Methodology for Comparison

    • Authors: Karin Hauff, Stefan Pfahl, Rolf Degenkolb
      First page: 30
      Abstract: In Europe, a heterogeneous range of national vehicle taxation systems exists in parallel, so that a simple comparison of electric vehicle (xEV) tax advantages is not straightforward. In this contribution, various European vehicle taxation systems are examined and a methodology is introduced which allows a comprehensible comparison and overview by calculating CO2 based taxation step curves. This methodology provides a powerful tool for benchmarking xEV technologies and analyzing consumer acceptance of xEVs and enables furthermore the discussion about possible future taxation and incentive schemes.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-08
      DOI: 10.3390/wevj9020030
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 31: Estimating Real-World Emissions of PHEVs in Norway
           by Combining Laboratory Measurement with User Surveys

    • Authors: Erik Figenbaum, Christian Weber
      First page: 31
      Abstract: The paper presents the results of experimental testing of the exhaust emission and energy consumption of two gasoline plug-in hybrid vehicles in an emission testing laboratory with different drive cycles and drive modes and at summer and winter temperatures. One was a compact vehicle with a type approval electric mode range of 50 km, the other a mid-sized vehicle with an electric mode range of 31 km. Additionally, an online survey of 2065 private plug-in hybrid vehicles (PHEV) owners investigated the usage pattern of the vehicles. Combining the laboratory tests with the user survey results provided an estimate for the reduction of CO2-emission of PHEVs in use in Norway. The main conclusion is that the PHEV is a vehicle type that needs to match well with the use pattern to produce low CO2- and local emissions. The achievable CO2-emission reduction was proportional to the range in electric drive-mode (E-mode), i.e., 50 km range resulted in about 50% reduction.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-10
      DOI: 10.3390/wevj9020031
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 32: Electric Vehicles in Rural Demand-Responsive
           Systems: Findings of Two Demand Responsive Transport Projects for the
           Improvement of Service Provision

    • Authors: David Camacho Alcocer, Benedikt Krams, Matthias Körner, Fabian Hantsch, Ullrich Martin, Georg Herzwurm
      First page: 32
      Abstract: To fill in mobility gaps, volunteer-based flexible transit solutions have been successfully implemented in Germany since early 1980s. These concepts have evolved to address a diverse array of needs and situations, and to incorporate new solutions and technologies. Such is the case of electrical vehicles (EVs), which have found an application in these systems through state-run initiatives seeking to promote sustainable mobility. This article presents two electric-car volunteer-based rural demand-responsive services, namely, a Buerger(ruf)auto (Dial-a-ride or “Citizen-operated-car”) and a Buergerbus (“Citizen-operated-bus”). The article outlines specific aspects of the EVs that are used, which need to be addressed to in order to achieve an operational efficiency that is comparable to an equivalent service using internal combustion vehicles. Specific challenges are identified, namely in relation to the technological limitations, and the size and characteristic of the vehicles required. In addition, specific challenges include the need for the vehicle components that allow data gathering directly from the car’s electric motor in order to analyze the car’s performance under different operational conditions. The article mentions the issues explicitly and specifies what would be required of electrical vehicles to become an asset in the provision of demand-responsive systems in rural settings.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-13
      DOI: 10.3390/wevj9020032
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 33: Comparative Life Cycle Analysis of Conventional
           and Hybrid Heavy-Duty Trucks

    • Authors: Matthias Rupp, Sven Schulze, Isabel Kuperjans
      First page: 33
      Abstract: Heavy-duty trucks are one of the main contributors to greenhouse gas emissions in German traffic. Drivetrain electrification is an option to reduce tailpipe emissions by increasing energy conversion efficiency. To evaluate the vehicle’s environmental impacts, it is necessary to consider the entire life cycle. In addition to the daily use, it is also necessary to include the impact of production and disposal. This study presents the comparative life cycle analysis of a parallel hybrid and a conventional heavy-duty truck in long-haul operation. Assuming a uniform vehicle glider, only the differing parts of both drivetrains are taken into account to calculate the environmental burdens of the production. The use phase is modeled by a backward simulation in MATLAB/Simulink considering a characteristic driving cycle. A break-even analysis is conducted to show at what mileage the larger CO2eq emissions due to the production of the electric drivetrain are compensated. The effect of parameter variation on the break-even mileage is investigated by a sensitivity analysis. The results of this analysis show the difference in CO2eq/t km is negative, indicating that the hybrid vehicle releases 4.34 g CO2eq/t km over a lifetime fewer emissions compared to the diesel truck. The break-even analysis also emphasizes the advantages of the electrified drivetrain, compensating the larger emissions generated during production after already a distance of 15,800 km (approx. 1.5 months of operation time). The intersection coordinates, distance, and CO2eq, strongly depend on fuel, emissions for battery production and the driving profile, which lead to nearly all parameter variations showing an increase in break-even distance.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-13
      DOI: 10.3390/wevj9020033
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 34: Capacity Recovery Effect in Lithium Sulfur
           Batteries for Electric Vehicles

    • Authors: Christian Maurer, Walter Commerell, Andreas Hintennach, Andreas Jossen
      First page: 34
      Abstract: Lithium sulfur batteries have a promisingly high theoretical specific energy density of about 2600 Wh/kg and an expected practical specific energy density of about 500–600 Wh/kg. Therefore, it is a highly promising future energy storage technology for electric vehicles. Beside these advantages, this technology shows a low cell capacity at high discharge currents. Due to the capacity recovery effect, up to 20 % of the total cell capacity becomes available again with some rest time. This study shows a newly-developed capacity recovery model for lithium sulfur batteries. Due to the long rest periods of electric vehicles, this effect has an important influence on the usable cell capacity and depth of discharge in lithium sulfur batteries.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-08-17
      DOI: 10.3390/wevj9020034
      Issue No: Vol. 9, No. 2 (2018)
  • WEVJ, Vol. 9, Pages 1: The World Electric Vehicle Journal, The Open Access
           Journal for the e-Mobility Scene

    • Authors: Joeri Van Mierlo
      First page: 1
      Abstract: The World Electric Vehicle Journal is the first peer-reviewed international scientific journal that covers all studies related to battery, hybrid, and fuel cell electric vehicles comprehensively. The gaining interest in e-mobility and related fast developments in electric vehicles has been leading to the need for the academic and industrial world, as well as the societal stakeholders, to have their own open-access journal in which they can share the latest developments and knowledge about electric vehicles. The journal accepts papers from all different disciplines, from new battery technologies, over propulsion system, and charging infrastructure to market developments and consumer behaviour. The World Electric Vehicle Journal is the primary scientific journal serving the interests of the international electric vehicle community. The World Electric Vehicle Journal has been managed by the World Electric Vehicle Association for the 10 years, with support from the Vrije Universiteit Brussel, and we have decided to further improve our professional approach by setting up the cooperation with MDPI as our professional publisher. Do you want to be inspired by e-mobility' Read more in the article below.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-05-16
      DOI: 10.3390/wevj9010001
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 2: Hydrogen Mobility Europe (H2ME): Vehicle and
           Hydrogen Refuelling Station Deployment Results

    • Authors: Peter Speers
      First page: 2
      Abstract: Hydrogen Mobility Europe (H2ME, 2015–2022) is the largest European Fuel Cells and Hydrogen Joint Undertaking (EU FCH JU)-funded hydrogen light vehicle and infrastructure demonstration. Up until April 2017, the 40 Daimler passenger car fuel cell electric vehicles (FCEVs) and 62 Symbio Fuel Cell-Range Extended Electric Vans (FC-REEV)-vans deployed by the project drove 625,300 km and consumed a total of 7900 kg of hydrogen with no safety incidents. During its first year of operation (to April 2017), the NEL Hydrogen Fueling HRS (hydrogen refuelling station) in Kolding, Denmark dispensed 900 kg of hydrogen, and demonstrated excellent reliability (98.2% availability) with no safety incidents. The average hydrogen refuelling time for passenger cars is comparable to that for conventional vehicles (2–3 min).
      Citation: World Electric Vehicle Journal
      PubDate: 2018-05-19
      DOI: 10.3390/wevj9010002
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 3: Mobility from Renewable Electricity: Infrastructure
           Comparison for Battery and Hydrogen Fuel Cell Vehicles

    • Authors: Yorick Ligen, Heron Vrubel, Hubert H. Girault
      First page: 3
      Abstract: This work presents a detailed breakdown of the energy conversion chains from intermittent electricity to a vehicle, considering battery electric vehicles (BEVs) and fuel cell electric vehicles (FCEVs). The traditional well-to-wheel analysis is adapted to a grid to mobility approach by introducing the intermediate steps of useful electricity, energy carrier and on-board storage. Specific attention is given to an effective coupling with renewable electricity sources and associated storage needs. Actual market data show that, compared to FCEVs, BEVs and their infrastructure are twice as efficient in the conversion of renewable electricity to a mobility service. A much larger difference between BEVs and FCEVs is usually reported in the literature. Focusing on recharging events, this work additionally shows that the infrastructure efficiencies of both electric vehicle (EV) types are very close, with 57% from grid to on-board storage for hydrogen refilling stations and 66% for fast chargers coupled with battery storage. The transfer from the energy carrier at the station to on-board storage in the vehicle accounts for 9% and 12% of the total energy losses of these two modes, respectively. Slow charging modes can achieve a charging infrastructure efficiency of 78% with residential energy storage systems coupled with AC chargers.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-05-24
      DOI: 10.3390/wevj9010003
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 4: Development, Implementation (Pilot) and Evaluation
           of a Demand-Responsive Transport System

    • Authors: Mascha Brost, Matthias Klötzke, Gerhard Kopp, Oliver Deißer, Eva-Maria Fraedrich, Katharina Karnahl, Tim Sippel, Alexander Müller, Stefanie Beyer
      First page: 4
      Abstract: This paper presents the partial results of the first phases of the BOOLEAN (Bürgerorientierte Optimierung der Leistungsfähigkeit, Effizienz und Attraktivität im Nahverkehr) research project. The demand-responsive transport and operating systems as well as virtual vehicle concepts are developed in a “real-world laboratory” in Schorndorf. The demand-responsive transport system is implemented as a part of the existing public transport system and will be tested for nine months. The paper focuses on the derivation of system requirements for the operating system and vehicle concepts. The virtual vehicle concepts developed within the project are specifically designed according to the needs of demand-responsive transport systems and are based on automation technologies and electric propulsion. An inter- and transdisciplinary approach integrates perspectives from the social, technical and computer sciences and various local stakeholders (operators, municipality, politics and citizens of a medium sized town in Southern Germany). Transformative processes are induced, supported and scrutinized during and beyond the pilot phase.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-05-30
      DOI: 10.3390/wevj9010004
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 5: Holistic Testing Strategies for Electrified Vehicle
           Powertrains in Product Development Process

    • Authors: Filiz Akkaya, Wolfgang Klos, Timm Schwämmle, Gregor Haffke, Hans-Christian Reuss
      First page: 5
      Abstract: In the field of powertrain engineering, longstanding knowledge was gained for testing conventional vehicle powertrains. The hitherto used test strategies here were more focused on the subsystems of the powertrain than on the powertrain as an integrated system. Through the electrification of the powertrain, the topology and the range of functions have changed. This leads to new challenges for the validation and requires not only adjustments of the test strategies for electric vehicle powertrains but establish and develop integrative tests for the powertrain as an integrated system in order to meet the increased complexity. This paper presents a method to develop a holistic test strategy for a hybrid and electrical vehicle powertrain. In order to avoid misunderstandings of the used terms, it is necessary to create a standard understanding of them. Therefore, a nomenclature is defined and described. Furthermore, a definition of a holistic test strategy is provided. The focus of this present study is on the powertrain and not on its single subsystems. Subsequently, the four steps of the method are introduced and the current results are presented. Finally, a new developed test element within the holistic test strategy is introduced. The findings of this study support the integrative testing for powertrains.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-05-30
      DOI: 10.3390/wevj9010005
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 6: Analysis of a Fictive Active e-Trailer

    • Authors: Steven Boonstra, Frank Rieck
      First page: 6
      Abstract: Trucks consume an enormous amount of diesel annually and contribute significantly to the total CO2 emissions around the world. Electrification of these freight vehicles would lead to a reduction in fuel consumption and CO2 emissions. Trailers, as part of heavy freight vehicles, are a great opportunity for innovative change. Electrifying the trailer would allow the combustion engine of the truck to cooperate with the electric motors in the trailer. The trailer would be able to regenerate energy using the electric motors built into the rear axis of the trailer. The energy that is regenerated could be stored in a battery power pack for later use. Using the principle of peak shaving, the combustion engine would be assisted by the active e-trailer. Peak shaving would occur when the calculated load on the combustion engine is highly above average, for example, during acceleration, climbing a hill, or during high speed. Energy from the power pack could be routed to the electric motors, adding propulsive force. This analysis of a fictive active e-trailer has focused on reducing fuel consumption and emissions. The energy consumption of the trailer and the energy regeneration were studied. For this analysis, two vehicle configurations were simulated within the MATLAB Simulink: one truck–trailer combination without the e-trailer application and one truck–trailer combination with the e-trailer application. Differences between the two simulated vehicle combinations have been analyzed and documented. The whole system would be self-sustaining by using the regenerating energy from braking and adjusting its assisting function according to the energy level of the power pack. However, better results would be achieved by charging the power pack periodically. By doing so, the reduction of fuel cost and emissions could be significantly improved.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-04
      DOI: 10.3390/wevj9010006
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 7: Modelling of a Power Converter with Multiple
           Operating Modes

    • Authors: Wang Feng, Luo Yutao
      First page: 7
      Abstract: In order to achieve DC voltage matching, on-board charging, and DC/AC power inversion, three independent power converters are often needed in traditional Distributed Power Converter (DPC) systems of electric vehicles (EVs): bidirectional DC/DC (Bi-DC/DC), AC/DC, and DC/AC. The requirement of electronic devices such as power switches, inductors, and capacitors make the converter costly and complicated in structure. In this paper, a power converter with multi-operating mode (PCMM) is presented. The proposed PCMM can work in Bi-DC/DC, AC/DC, and DC/AC modes. The state-space averaging model of PCMM considering resistance of Insulated Gate Bipolar Transistor (IGBT) and the inductor is presented. Based on this model, the transfer function of the system is derived and the controller is designed. The simulation and experimental results show that PCMM can meet the design target and verify the feasibility of the model. The measurement results show that the weight of PCMM proposed in this paper is reduced by 51.2% compared with the traditional structure.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-05
      DOI: 10.3390/wevj9010007
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 8: Modelling and Evaluation of Battery Packs with
           Different Numbers of Paralleled Cells

    • Authors: Fengqi Chang, Felix Roemer, Michael Baumann, Markus Lienkamp
      First page: 8
      Abstract: To better evaluate the configuration of battery packs in electric vehicles (EV) in the early design phase, this paper proposes a mathematic model for the simulation of battery packs based on the elementwise calculations of matrices. This model is compatible with the different battery models and has a fast simulation speed. An experimental platform is built for the verification. Based on the proposed model and the statistic features of battery cells, the influence of the number of paralleled cells in a battery pack is evaluated in Monte-Carlo experiments. The simulation results obtained from Monte-Carlo experiments show that the parallel number is able to influence the total energy loss inside the cells, the energy loss caused by the balancing of the battery management system (BMS) and the degradation of the battery pack.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-07
      DOI: 10.3390/wevj9010008
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 9: Electric Roads: Analyzing the Societal Cost of
           Electrifying All Danish Road Transport

    • Authors: Gabriel Domingues-Olavarría, Francisco J. Márquez-Fernández, Pontus Fyhr, Avo Reinap, Mats Alaküla
      First page: 9
      Abstract: Electric Road Systems (ERS) have emerged as an alternative to deal with the main drawbacks that battery electric vehicles present (i.e., higher cost, short driving range, long charging times, etc.). This paper analyses the societal cost of electrifying all road transport in Denmark under four different scenarios. The first scenario considered in this study is based on today’s approach of having electric vehicles with high battery capacity and fast charging stations, the remaining scenarios study the cost of implementing different ERS at a national level. The results clearly show the benefits of implementing road bound electric road solutions that can be used both by commercial and passenger vehicles.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-07
      DOI: 10.3390/wevj9010009
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 10: Operating Point Adaptation for NVH-Optimization of
           Induction Machines

    • Authors: Wolfgang M. Bischof, Florian Draeger, Martin D. Hennen, Ralph M. Kennel
      First page: 10
      Abstract: Inverter-fed drive systems are mostly optimized to operate at the best efficiency, neglecting the possibility of acoustic optimization. The chosen operating point can lead to undesired harmonics involving vibrations and noises of the electrical drive. In order to optimize the system with respect to acoustics, the given operating point for best efficiency is left and a noise, vibration and harshness (NVH)-optimized operating point is chosen. This paper shows the influence of the operating point on NVH, describes an NVH-optimized control and draws a comparison between simulation and measurement.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-07
      DOI: 10.3390/wevj9010010
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 11: Optimal Powertrain Design through a Virtual
           Development Process

    • Authors: Hendrik Piechottka, Ferit Küçükay, Felix Kercher, Michael Bargende
      First page: 11
      Abstract: The ever more stringent global CO2 and pollutant emission regulations imply that the optimization of conventional powertrains can only provide partial reductions in fleet emissions. Vehicle manufacturers are therefore responding by increasing the electrification of their powertrain portfolios. This in turn, results in higher levels of electrification of the individual powertrain units. The increase in electric power leads to a comprehensive range of possible technologies—from 48 V mild hybrids to pure electric concepts. The powertrain topology and the configuration of the electrical components of a hybrid powertrain play a decisive role in determining the overall efficiency when considering the individual market requirements. Different hybrid functions as well as performance and customer requirements are determined from statutory cycles and in customer operation. A virtual development chain that is based on MATLAB/Simulink then represents the steps for the identification, configuration, and evaluation of new electrified powertrains. The tool chain presented supports powertrain development through automated conceptualization, design, and evaluation of powertrain systems and their components. The outcome of the entire tool chain is a robust concept decision for future powertrains. Using this methodical and reproducible approach, future electrified powertrain concepts are identified.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-13
      DOI: 10.3390/wevj9010011
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 12: Model-Based Optimization of a Plug-In Hybrid
           Electric Powertrain with Multimode Transmission

    • Authors: Stefan Geng, Andreas Meier, Thomas Schulte
      First page: 12
      Abstract: Plug-in hybrid electric vehicles are developed in order to reduce the fuel consumption and the emission of carbon dioxide. Besides the series, parallel and power split configurations are commonly used for conventional hybrid electric vehicles, and multimode transmissions are used for plug-in hybrid electric vehicles, which are able to switch between different modes like parallel or series operation of the combustion engine and electric motor. Several concepts have already been discussed and presented. These concepts comprise novel structures and multi-speed operation for the combustion engine and the electric motor, respectively. For improving the fuel and energy consumption, model-based optimizations of multimode transmissions are performed. In the first step of the optimization, the optimal number of gears and transmission ratios, as well as the corresponding fuel and energy savings, are estimated. Based on these results, a new multimode transmission concept with two-speed transmissions for the combustion engine and the electric motor has been developed. The knowledge of the concrete concept enables the further optimizations of the transmission ratios and the transmission control. In order to prove the benefit of the new and optimized transmission concept, powertrain simulations have been carried out. The new powertrain concept is compared to a powertrain concept with single-speed transmissions for the internal combustion engine (ICE) and electric motor operation. The new transmission concept enables a significant improvement of the fuel consumption.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-13
      DOI: 10.3390/wevj9010012
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 13: Fast-Charge Life Cycle Test on a Lithium-Ion
           Battery Module

    • Authors: F. Vellucci, G. Pede
      First page: 13
      Abstract: This study addresses the effects of fast charge on a lithium-ion battery module made by four lithium-iron-phosphate cells connected in series, submitted to a test profile which included a fast-charge step at a current rate of 3 C. This test profile simulated the real working profile requested by the batteries of an electric bus to perform a particular service of local public transportation, with the batteries recharging at the end of line. More than 3000 shallow cycles were performed. The battery module did not show a significant reduction in performance in terms of capacity and energy; however, a relevant increase in resistance was observed. Due to this change, the autonomy of the electric bus was reduced correspondingly. By fixing a minimum value for the autonomy, a life estimate of the battery module was made. Finally, on the base of this result, a cost estimate and comparison between slow and fast charge was made, under the same service conditions throughout the vehicle’s lifespan, for a real case of a minibus equipped with a battery system sized for fast charge at the end of line, and a larger battery system sized for slow charge at the end of a working day. This comparison proved that, in the case study considered, the solution using fast charge was cheaper, and fast charge can be a valid approach to solve the problem of short autonomy of electric vehicles.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-16
      DOI: 10.3390/wevj9010013
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 14: Perceived Usage Potential of Fast-Charging

    • Authors: Julia Krause, Stefan Ladwig, Lotte M. Saupp, Denis Horn, Alexander Schmidt, Maximilian Schwalm
      First page: 14
      Abstract: Fast-charging infrastructure with charging time of 20–30 min can help minimizing current perceived limitations of electric vehicles, especially considering the unbalanced and incomprehensive distribution of charging options combined with a long perceived charging time. Positioned on optimal location from user and business perspective, the technology is assumed to help increasing the usage of an electric vehicle (EV). Considering the user perspectives, current and potential EV users were interviewed in two different surveys about optimal fast-charging locations depending on travel purposes and relevant location criteria. The obtained results show that customers prefer to rather charge at origins and destinations than during the trip. For longer distances, charging locations on axes with attractive points of interest are also considered as optimal. From the business model point of view, fast-charging stations at destinations are controversial. The expensive infrastructure and the therefore needed large number of charging sessions are in conflict with the comparatively time consuming stay.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-20
      DOI: 10.3390/wevj9010014
      Issue No: Vol. 9, No. 1 (2018)
  • WEVJ, Vol. 9, Pages 15: Application of Driverless Electric Automated
           Shuttles for Public Transport in Villages: The Case of Appelscha

    • Authors: Reanne Boersma, Bart van Arem, Frank Rieck
      First page: 15
      Abstract: This paper reports on the application of electric automated vehicles in the city of Appelscha, The Netherlands. Appelscha is challenged with a predicted decline of inhabitants and an already shrinking public transport network. To preserve the region’s accessibility, the municipality started a pilot with electric automated vehicles. These vehicles drove on a separate cycle lane for six weeks in 2016. This pilot has shown that a pilot is possible, with little infrastructural changes. Even though the maximum speed of 15 km/h might suggest that automated vehicles are suitable to share the road with cyclists, the cycle lane in Appelscha was not sufficient due to the width of the cycle lane. No accidents occurred during the pilot.
      Citation: World Electric Vehicle Journal
      PubDate: 2018-06-21
      DOI: 10.3390/wevj9010015
      Issue No: Vol. 9, No. 1 (2018)
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