Electric Vehicle-To-Vehicle (V2V) Energy Transfer Using On-board Converters

Student thesis: Master's Thesis

Abstract

Electric vehicle-to-vehicle (V2V) charging is a new convenient method for sharing energy among Electric Vehicles (EVs). Existing V2V approaches with off-board power sharing interface add extra space and cost for EV users. Further, V2V using on-board type 2 chargers reported in the literature are not efficient due to redundant conversion stages. In this thesis, a new practical method is proposed for V2V power transfer by directly connecting the two EV batteries for sharing energy through the type-2 AC charger input ports and switches. The active rectifiers of the on-board type-2 chargers are not used for rectification during V2V, instead only a few switches of active rectifiers are simply used as an interface to connect the two EV batteries, to avoid the redundant power conversion and associated losses which effectively improves the overall V2V efficiency. The possible V2V charging scenarios of the proposed V2V approach are validated using MATLAB/Simulink simulation. For the simulation results, the actual on-board charger power rating i.e., 19.4 kW is considered. The practical validation of the proposed V2V approach is demonstrated through a scaled laboratory prototype, and the details of the experimental setup are reported in this report. With the practical limitation of the available battery ratings in the lab, the total power rating of the hardware setup is scaled down to 1.2 kW.
Date of AwardJul 2022
Original languageAmerican English

Keywords

  • Electric Vehicle (EV)
  • On-board Type-2 AC charger
  • vehicle-to-vehicle (V2V) charging.

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