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Energies 2018, 11(2), 421; https://doi.org/10.3390/en11020421

Research on an Electric Vehicle Owner-Friendly Charging Strategy Using Photovoltaic Generation at Office Sites in Major Chinese Cities

1
National Active Distribution Network Technology Research Center, Beijing Jiaotong University, Beijing 100044, China
2
Haidian Electric Power Supply Company of State Grid Beijing Electric Power Company, Beijing 100044, China
3
Inner Mongolia Electric Power Research Institute, Hohhot 010020, Inner Mongolia, China
4
Liuzhou Power Supply Bureau, Guangxi Power Grid Co., Ltd., Liuzhou 545000, Guangxi, China
5
School of Electrical Engineering, Beijing Jiaotong University, Beijing 100044, China
6
Department of Electrical and Electronic Engineering, Faculty of Engineering, Tokyo City University, Tokyo 163-8001, Japan
7
Department of Electrical and Computer Engineering, Michigan Technological University, Houghton, MI 49931, USA
*
Authors to whom correspondence should be addressed.
Received: 24 December 2017 / Revised: 4 February 2018 / Accepted: 6 February 2018 / Published: 12 February 2018
(This article belongs to the Special Issue Energy Management in Vehicle–Grid–Traffic Nexus)
Full-Text   |   PDF [5271 KB, uploaded 12 February 2018]   |  

Abstract

Electric vehicles (EV) and photovoltaic (PV) generation are widely recognized around the world. Most EV owners in the major Chinese cities are forced to charge their EV batteries at the workplace during the daytime due to the limited space near their homes, which will increase the peak load during the daytime. On the other hand, the PV output is most likely to have a peak at around noon, which means, PVs could have a potential capability to compensate the EV charging load. An EV owner-friendly charging strategy based on PV utilization which alleviates both the EV charging constraints and the negative impact of the EV charging load on the grid is proposed. The PV utilization for compensating the unconstrained EV charging load is maximized to derive the maximum number of EVs with unconstrained charging. If the actual number of EVs exceeds the maximum number, a portion of EVs have to be charged only from the grid. Then, the line loss is introduced as the optimization objective in which the charging states are regulated. The case study shows that the proposed strategy can successfully increase the number of EVs with unconstrained charging, and reduce the peak-to-peak of the load curve. View Full-Text
Keywords: electric vehicle; office sites; major Chinese cities; PV utilization; EV owner-friendly charging strategy electric vehicle; office sites; major Chinese cities; PV utilization; EV owner-friendly charging strategy
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).
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Su, S.; Hu, Y.; Yang, T.; Wang, S.; Liu, Z.; Wei, X.; Xia, M.; Ota, Y.; Yamashita, K. Research on an Electric Vehicle Owner-Friendly Charging Strategy Using Photovoltaic Generation at Office Sites in Major Chinese Cities. Energies 2018, 11, 421.

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