電気自動車の移動目的地での充電可能性を考慮した充電負荷曲線の推計

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  • An Estimation of Electric Vehicle Load Profiles Considering Destination Charging in Japan
  • デンキ ジドウシャ ノ イドウ モクテキチ デ ノ ジュウデン カノウセイ オ コウリョ シタ ジュウデン フカ キョクセン ノ スイケイ

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This paper aims at estimating daily load profiles of plug-in electric vehicle (EV) considering destination charging in Japan. Using the road traffic census data on passenger vehicles, we reveal the charging load at 30% EV penetration. Assuming that EVs are charged at their garages and commercial facilities, we show that the load profile on weekdays has three peaks and that the highest occurs in the evening. When EVs can also be charged at users' workplaces after commuting, the charging peak in the morning becomes higher. On weekends, a highest charging peak occurs in the evening, which is lower than that on weekdays. We also show impacts of charging power and battery capacity of EVs on load profiles. In addition, we assume a charging scenario for weekends where EVs parked all day are utilized in order to consume power generated from photovoltaic (PV) systems. If we can effectively employ EVs parked all day, which account for 48% of all EVs, they would improve the situation with their large charging potential to consume power from PV systems.

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