Within-day recharge of plug-in hybrid electric vehicles: Energy impact of public charging infrastructure. Dong, J. & Lin, Z. Transportation Research Part D: Transport and Environment, 17(5):405-412, Elsevier Ltd, 7, 2012.
Within-day recharge of plug-in hybrid electric vehicles: Energy impact of public charging infrastructure [pdf]Paper  Within-day recharge of plug-in hybrid electric vehicles: Energy impact of public charging infrastructure [link]Website  abstract   bibtex   
This paper examines the role of public charging infrastructure in increasing the share of driving on electricity that plug-in hybrid electric vehicles might exhibit, thus reducing their gasoline consumption. Vehicle activity data obtained from a global positioning system tracked household travel survey in Austin, Texas, is used to estimate gasoline and electricity consumptions of plug-in hybrid electric vehicles. Drivers’ within-day recharging behavior, constrained by travel activities and public charger availability, is modeled. It is found that public charging offers greater fuel savings for hybrid electric vehicles s equipped with smaller batteries, by encouraging within-day recharge, and providing an extensive public charging service is expected to reduce plug-in hybrid electric vehicles gasoline consumption by more than 30% and energy cost by 10%, compared to the scenario of home charging only.

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