Autor(es):
Monteiro, Vítor 
; Pinto, J. G. ; Exposto, Bruno ; Gonçalves, Henrique ; Ferreira, João C. ; Couto, Carlos ; Afonso, João L.
Data: 2012
Identificador Persistente: http://hdl.handle.net/1822/20916
Origem: RepositóriUM - Universidade do Minho
Assunto(s): Battery charger; Electric vehicles; Reactive power control; V2G; Power quality
Descrição
Batteries of Electric Vehicles (EVs) and Plug-in
Hybrid Electric Vehicles (PHEVs) have a large potential not
only to provide energy for the locomotion of these vehicles, but
also to interact, in dynamic way, with the power grid. Thereby,
through the energy stored in the batteries, these vehicles can be
used to regulate the active and the reactive power, as local
Energy Storage Systems. This way, EVs can contribute to help
the power grid to regulate the active and reactive power flow in
order to stabilize the production and consumption of energy.
For this propose should be defined usage profiles, controlled by
a collaborative broker, taking into account the requirements of
the power grid and the conveniences of the vehicle user. Besides,
the interface between the power grid and the EVs, instead of
using typical power converters that only work on unidirectional
mode, need to use bidirectional power converters to charge the
batteries (G2V - Grid-to-Vehicle mode) and to deliver part of
the stored energy in the batteries back to the power grid (V2G -
Vehicle-to-Grid mode). With the bidirectional power converter
topology presented in this paper, the consumed current is
sinusoidal and it is possible to regulate the power factor to
control the reactive power, aiming to contribute to mitigate
power quality problems in the power grid. To assess the
behavior of the presented bidirectional power converter under
different scenarios, are presented some computer simulations
and experimental results obtained with a prototype that was
developed to be integrated in an Electric Vehicle.
