System design for a solar powered electric vehicle charging station for workplaces

System design for a solar powered electric vehicle charging station for workplaces

Chandra Mouli, G.R. (TU Delft DC systems, Energy conversion & Storage)
Bauer, P. (TU Delft DC systems, Energy conversion & Storage)
Zeman, M. (TU Delft Electrical Sustainable Energy)

Electrical Sustainable Energy

2016

This paper investigates the possibility of charging battery electric vehicles at workplace in Netherlands using solar energy. Data from the Dutch Meteorological Institute is used to determine the optimal orientation of PV panels for maximum energy yield in the Netherlands. The seasonal and diurnal variation in solar insolation is analyzed to determine the energy availability for EV charging and the necessity for grid connection. Due to relatively low solar insolation in Netherlands, it has been determined that the power
rating of the PV array can be oversized by 30% with respect to power rating of the converter. Various dynamic EV charging profiles are compared with an aim to minimize the grid dependency and to maximize the usage of solar power to directly charge the EV. Two scenarios are considered – one where the EVs have to be charged only on weekdays and the second case where EV have to be charged all 7 days/week. A priority mechanism is proposed to facilitate the charging of multiple EV from a single EV–PV charger. The feasibility of integrating a local storage to the EV–PV charger to make it grid independent is evaluated. The optimal storage size that reduces the grid dependency by 25% is evaluated.

Batteries
Electric vehicles
Energy storage
Photovoltaic systems
Solar energy

http://resolver.tudelft.nl/uuid:986461ea-efa5-423e-890d-7b2e528f3f4e

https://doi.org/10.1016/j.apenergy.2016.01.110

0306-2619

Applied Energy, 168, 434-443

Institutional Repository

journal article

© 2016 G.R. Chandra Mouli, P. Bauer, M. Zeman