Better (not) Charge in Your Garage! Perceived Benefits and Optimal Positioning of Public Fast Charging Infrastructure for Electrical Vehicles from User’s Perspective

Author(s):  
Julia Krause ◽  
Stefan Ladwig ◽  
Maximilian Schwalm
Author(s):  
Carola Leone ◽  
Michela Longo

AbstractRoad transport electrification is essential for meeting the European Union's goals of decarbonization and climate change. In this context, an Ultra-Fast Charging (UFC) system is deemed necessary to facilitate the massive penetration of Electric Vehicles (EVs) on the market; particularly as medium-long distance travels are concerned. Anyway, an ultra-fast charging infrastructure represents the most critical point as regards hardware technology, grid-related issues, and financial sustainability. Thus far, this paper presents an impact analysis of a fast-charging station on the grid in terms of power consumption, obtained by the Monte Carlo simulation. Simulation results show that it is not economical convenient size the assumed ultra-fast charging station for the maximum possible power also considering its high impact on the grid. In view of the results obtained from the impact analysis, the last part of the paper focuses on finding a method to reduce the power installed for the DC/DC stage while keeping the possibility for the electric vehicle to charge at their maximum power. To achieve this goal a modular approach is proposed. Finally, two different modular architectures are presented and compared. In both the solutions, the probability of having EVs charging at limited power is less than 5%.


Author(s):  
Xi Chen Xi Chen ◽  
Tianyan Jiang Tianyan Jiang ◽  
Maoqiang Bi Maoqiang Bi ◽  
You Wang You Wang ◽  
Haowei Gao Haowei Gao

2017 ◽  
Vol 367 ◽  
pp. 237-249 ◽  
Author(s):  
Andrew Burnham ◽  
Eric J. Dufek ◽  
Thomas Stephens ◽  
James Francfort ◽  
Christopher Michelbacher ◽  
...  

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1937 ◽  
Author(s):  
Germana Trentadue ◽  
Alexandre Lucas ◽  
Marcos Otura ◽  
Konstantinos Pliakostathis ◽  
Marco Zanni ◽  
...  

Multi-type fast charging stations are being deployed over Europe as electric vehicle adoption becomes more popular. The growth of an electrical charging infrastructure in different countries poses different challenges related to its installation. One of these challenges is related to weather conditions that are extremely heterogeneous due to different latitudes, in which fast charging stations are located and whose impact on the charging performance is often neglected or unknown. The present study focused on the evaluation of the electric vehicle (EV) charging process with fast charging devices (up to 50 kW) at ambient (25 °C) and at extreme temperatures (−25 °C, −15 °C, +40 °C). A sample of seven fast chargers and two electric vehicles (CCS (combined charging system) and CHAdeMO (CHArge de Move)) available on the commercial market was considered in the study. Three phase voltages and currents at the wall socket, where the charger was connected, as well as voltage and current at the plug connection between the charger and vehicle have been recorded. According to SAE (Society of Automotive Engineers) J2894/1, the power conversion efficiency during the charging process has been calculated as the ratio between the instantaneous DC power delivered to the vehicle and the instantaneous AC power supplied from the grid in order to test the performance of the charger. The inverse of the efficiency of the charging process, i.e., a kind of energy return ratio (ERR), has been calculated as the ratio between the AC energy supplied by the grid to the electric vehicle supply equipment (EVSE) and the energy delivered to the vehicle’s battery. The evaluation has shown a varied scenario, confirming the efficiency values declared by the manufacturers at ambient temperature and reporting lower energy efficiencies at extreme temperatures, due to lower requested and, thus, delivered power levels. The lowest and highest power conversion efficiencies of 39% and 93% were observed at −25 °C and ambient temperature (+25 °C), respectively.


2018 ◽  
Vol 9 (1) ◽  
pp. 14 ◽  
Author(s):  
Julia Krause ◽  
Stefan Ladwig ◽  
Lotte Saupp ◽  
Denis Horn ◽  
Alexander Schmidt ◽  
...  

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.


2018 ◽  
Vol 62 ◽  
pp. 314-329 ◽  
Author(s):  
Till Gnann ◽  
Simon Funke ◽  
Niklas Jakobsson ◽  
Patrick Plötz ◽  
Frances Sprei ◽  
...  

Energies ◽  
2014 ◽  
Vol 7 (3) ◽  
pp. 1207-1229 ◽  
Author(s):  
Antonio Colmenar-Santos ◽  
Carlos de Palacio ◽  
David Borge-Diez ◽  
Oscar Monzón-Alejandro

2016 ◽  
Vol 8 (4) ◽  
pp. 943-954 ◽  
Author(s):  
Till Gnann ◽  
Daniel Goldbach ◽  
Niklas Jakobsson ◽  
Patrick Plötz ◽  
Anders Bennehag ◽  
...  

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