Modelling of Electric Vehicle Charging Station for DC Fast Charging

Angelov, George; Andreev, Miroslav; Hinov, Nikolay

doi:10.1109/isse.2018.8443663

Cited by 14 publications

(11 citation statements)

References 4 publications

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“…Araç içinde doğrultucu ve batarya grubu içerirken şarj cihazını araç dışında bulunduran bir yöntemdir [7]. Bu yöntemdeki şarj seviyesi şarj çıkışının güç seviyesi olarak ifade edilmektedir [18].…”

Section: Dahili şArj Yöntemi (On-board Charging Methods)unclassified

“…China Electricity Council (CEC)) ÇinHızlı şarj istasyonu ile ilgili literatür çalışmaları incelendiğinde Angelov ve ark. ları[7] EA'lar için batarya, güç dönüştürücüsü ve kontrol ünitesinden oluşan yeni bir şarj modeli tasarlamışlardır. Çalışmayı diğer çalışmalardan önemli yönü aşırı şarjı önlemek için 25V ve 400V sınırlama katsayısına sahip orantılı bir Pregülatörlü kontrol ünitesi içermesidir.…”

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“…Bu yöntem şehirlerarası yollar ve otobanlar hariç havaalanlarından üniversitelere kadar kurulmasında sakınca olmayan bir modeldir[21]. Bu yöntemdeki şarj süresi seviye 1 şarj etme süresinin yarısından daha azdır[7]. Bu istasyonlar IEC 62196 standardına göre 32A 250V (tek faz) ve 480V (üç faz) olarak sınırlandırılmıştır[22].…”

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Elektri̇kli̇ Araçlar İçi̇n Hizli Şarj İstasyonu Teknoloji̇leri̇

Kerem

Gürbak

2020

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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Electric vehicle (EV) technology is a new technology aiming to reduce fossil fuel usages. This new technology has some problems including battery charging time and range. One of the problems, battery charging times (level 1 level 2, level 3, and level 4), was investigated in this study. While level 1 and level 2 refer to methods of slow charging, level 3 and level 4 refer to fast charging. Fast charging methods consist of three different topologies: topology with AC/ DC/ DC converters (vehicle-to-grid (V2G) charging stations and one-way charging stations as their subbranches), common AC-connected multi-point topology and transformerless topologies. Figure A. EV Charging Methods Among these topologies, it was concluded that the V2G method is an effective and reliable method in terms of adaptation to renewable energy sources, energy efficient use, easy installation and adaptation to both AC and DC systems. Purpose: It is aimed to determine fastest and the most efficient charging method for EV's. Hence the layout, functionality and importance of EV charging stations have been investigated. Theory and Methods: Topologies of EV charging stations were analyzed and compared in literature from various perspectives. In addition, tables were created to detect variations between charging levels and charging rates. Results: Fast charging stations have been observed to be vital for EV's to adapt to future technologies. The V2G fast charging topology has been observed to have a high energy efficiency and can operate in accordance with other renewable energy sources. Conclusion: Some fast charging stations are viewed as a threat to the electricity grids as having a charging capacity at MW levels. Among the steps that can be taken against this challenge are to reduce the problems caused by the demand for electricity, to preserve the charging station's common link point voltage and to send reactive power to the grid to avoid voltage instability. Another precaution is to use the V2G fast charging method. These stations must also be built in compliance with IEC requirements in terms of user/ network protection, device reliability and energy efficiency.

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Section: Dahili şArj Yöntemi (On-board Charging Methods)unclassified

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Elektri̇kli̇ Araçlar İçi̇n Hizli Şarj İstasyonu Teknoloji̇leri̇

Kerem

Gürbak

2020

Gazi Üniversitesi Fen Bilimleri Dergisi Part C: Tasarım Ve Teknoloji

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“…The direction of current flow determines whether the battery is charging or discharging. Typically, the converter operates in buck mode and charges the battery if S buck is switched on and S boost is switched off, whereas the converter operates in discharging boost mode when S boost is switched on and S buck is switched off [22].…”

Section: A Modelling and Connection Of DC Fast Chargers To Gridsmentioning

confidence: 99%

“…Generally, a constant current-constant voltage (CC-CV) method (see Fig. 4) is applied to control the charging, prolong battery life and prevent battery degradation [13,22,24]. In this method, a CC mode is switched to a CV mode once the battery voltage reaches its upper threshold value, causing the charging current to reduce exponentially while increasing the state of charge (SoC) of the battery [22,25].…”

Section: A Modelling and Connection Of DC Fast Chargers To Gridsmentioning

confidence: 99%

Voltage Analysis on MV/LV Distribution Networks with the Integration of DC Fast Chargers

Sonder

Cipcigan

Ugalde‐Loo

2020

2020 6th IEEE International Energy Conference (ENERGYCon)

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The development of ultra-low carbon emission electric vehicles (EVs) has been grown rapidly over the last years in response to the large share of greenhouse gas emissions contributed by the transportation sector. One of the main issues among EV drivers is range anxiety, which mainly results from the long charging battery durations. DC fast charging, the latest charging technology, aims to shorten charging duration; however, the success of e-mobility will be also related to the capacity of the distribution network to integrate the new EVs and their chargers. Specifically, the integration of EVs and DC fast chargers will increase the peak demand and may pose significant challenges for MV and LV distribution networks if adequate control measures are not implemented. This paper introduces a topology for the modelling and connection of a DC fast charger on a real MV/LV distribution network and ensures that the network operates within acceptable limits and that consumers connected to it are minimally affected. Simulation results show that DC fast chargers stress the LV distribution network by causing grid congestions; however, local voltage control measures and a vehicle-to-grid technology can improve some of the grid-side challenges.

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