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The growing global awareness for a pollution free environment coupled with lower cost and higher availability of smaller generating units (PV and wind) has elevated the interest in distributed generation. On the other hand, Plugin Hybrid Electric Vehicles (PHEVs) present a promising and emerging technology of future transportation. But it should also be taken into account that the proliferation of PHEVs requires utilities to upgrade the distribution transformers to handle the additional load. Hence an intelligent integration of PHEVs and microgrids is needed to mitigate the issues of overloading on the distribution transformers. This paper proposes a charging station architecture with a small scale wind turbine as the primary source. Coordinated control strategy based on DC link voltage sensing is proposed to facilitate the operation of the charging facility in standalone and grid-connected mode. The proposed architecture and the control algorithm are validated through simulations using MATLAB/SIMULINK toolbox.

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The ongoing research in the field of plug-in electric vehicles (PEVs) and the growing global awareness for a pollution free environment, will lead to an increase in the number of PEVs in the near future. The proliferation of these PEVs will add stress to the already overloaded power grid creating new challenges for the distribution network. To mitigate this issue several researchers have proposed the idea of charging PEVs using renewables coupled with smart charging strategies. This chapter reviews the current literature on the state of the art infrastructure proposed for PEV charging facilities integrated with photovoltaic system. The proposed control algorithms, various smart charging techniques and different power electronic topologies for photovoltaic charging facilities (PCFs) are reviewed. Studies assessing the ability of photovoltaic charging stations to minimize the loading on distribution transformers are assessed. Finally, a simple and unique energy management algorithm for a PV based workplace charging facility based on dc link voltage sensing is presented. The power needed to charge the plug-in electric vehicles comes from grid-connected photovoltaic (PV) generation or the utility or both. The efficacy of the proposed algorithm is validated through simulation and experimental results.

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