The Concept of EV’s Intelligent Integrated Station and Its Energy Flow

Energies

Da Xie²  Haoxiang Chu²  Yupu Lu²  Chenghong Gu¹  Furong Li¹  Yu Zhang³ 

[1] Department of Electronic and Electrical Engineering, University of Bath, Bath BA2 7AY, UK; E-Mails:;Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China; E-Mails:;Research Institute of Electric Power, Shanghai Power Supply Company, Shanghai 200437, China; E-Mail:

关键词: charging/discharging strategy;    electric vehicle;    energy flow;    generalized energy;    intelligent integrated station;    load level;    peak load shifting;   

DOI  :  10.3390/en8054188

来源: mdpi

【 摘 要 】

The increasing number of electric vehicles (EVs) connected to existing distribution networks as time-variant loads cause significant distortions in line current and voltage. A novel EV’s intelligent integrated station (IIS) making full use of retired batteries is introduced in this paper to offer a potential solution for accommodating the charging demand of EVs. It proposes the concept of generalized energy in IIS, based on the energy/power flow between IIS and EVs, and between IIS and the power grid, to systematically evaluate the energy capacity of IIS. In order to derive a unique and satisfactory operation mode, information from both the grid (in terms of load level) and IIS (in terms of its energy capacity and EVs battery charging/exchanging requests) is merged. Then, based on the generalized energy of different systems, a novel charging/discharging control strategy is presented and whereby the operating status of the grid and energy capacity of IIS are monitored to make reasonable operation plans for IIS. Simulation results suggest that the proposed IIS offers peak load shifting when EV battery charging/exchanging requests are satisfied compared to existing charging stations.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.