Development of the Electric Vehicle’s Infrastructure System for Renewable Energy Maximization

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  • 再生可能エネルギーを利用した電気自動車向けインフラシステム
  • 再生可能エネルギーを利用した電気自動車向けインフラシステム[含 質疑]
  • サイセイ カノウ エネルギー オ リヨウ シタ デンキ ジドウシャ ムケ インフラ システム ガン シツギ

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Abstract

The Electric Vehicle (EV) is clean and environmental friendly vehicle. However, its power source, electricity still contains fossils. To reduce the fossil utilization, the authors established the Renewable Energy for Electric Vehicle (RE-EV) project. In this paper, two research topics are studied. One is a study of actual operation data to obtain the potential of the EV with PV electricity. An EV (i-MiEV) manufactured by Mitsubishi Motors Corporation was operated for 1 year. In this project, acharging station consisting of a 2.6 kW Photovoltaic power generation (PV) system with a 9 kWh battery system and measuring equipment was installed in Ookayama campus in Tokyo Institute of Technology. This system maximizes the PV electricity and minimizes grid electricity while charging the EV. Second is a statistical study to estimate CO2 emissions for various kinds of driving patterns. In this paper, 6 driving patterns from statistical data and 1 actual data were studied by Life-Cycle Assessment (LCA) approach to estimate CO2 emissions. As a result, 80% of charging electricity is from PV from actual operation data.Regarding the LCA, CO2 emissions of EV with PV electricity are same with utility electricity at short distance driving pattern and much better at long distance driving patterns, even when the system uses lead acid battery. And CO2 emissions of all EV driving patterns are smaller than those of a gasoline vehicle.

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