  The integration of large-scale wind farms and large-scale charging stations
for electric vehicles with the electricity grids necessitate energy storage
support for both technologies. Matching the energy variability of the wind
farms with the demand variability of the electric vehicles (EVs) off-grid could
potentially eliminate the need for expensive energy storage technologies
required to stabilize the grid. The objective of this paper is to investigate
the feasibility of using wind generation as direct energy source to power the
EV charging stations. An interval-based approach corresponding to the time slot
of EV charging is introduced for wind energy conversion and analyzed using
different constrains and criteria including, wind speed averaging time
interval, various turbines manufacturers, and standard high-resolution wind
speed data sets. We performed a piecewise recursive of wind turbines' output
energy to measure the EV charging efficiency. Wind averaging results show that
the three minutes intervals have increased the total number of EVs by more than
80% compared to one-- and two -minute intervals. The potential cost reduction
due to decoupling of both technologies from the utility grid, energy storage
systems, and the associated energy conversion power electronics has merit and
research in this direction is worth pursuing
