The concept of EV's intelligent integrated station and its energy flow

Da Xie, Haoxiang Chu, Yupu Lu, Chenghong Gu, Furong Li, Yu Zhang

Research output: Contribution to journalArticle

4 Citations (Scopus)
51 Downloads (Pure)

Abstract

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.

Original languageEnglish
Pages (from-to)4188-4215
Number of pages28
JournalEnergies
Volume8
Issue number5
Early online date11 May 2015
DOIs
Publication statusPublished - 31 May 2015

Keywords

  • Charging/discharging strategy
  • Electric vehicle
  • Energy flow
  • Generalized energy
  • Intelligent integrated station
  • Load level
  • Peak load shifting

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