Energy Management of an Integrated PV/Battery/Electric Vehicles Energy System Interfaced by a Multi-port Converter

Integrated energy systems, including renewable energy sources (RES) and battery energy storage (BES), have high potentialities to deal with issues caused by the high penetration of electric vehicles (EVs) in power systems. The full realization of the benefits of such systems depends on implementation of an energy management system (EMS) in order to monitor power sharing between different components of the system. In this paper, an EMS is proposed for a multi-port converter as an integrated PV/BES/EV energy system. It takes into account the EV mileage, BES dis/charge cycles and financial benefits, and schedule for the optimal dis/charge of batteries, and also involves EVs in V۲X programs. In this approach, the potential of EVs as a portable energy storage can be employed in providing ancillary services to the power grid. The obvious advantages of the proposed EMS performance have been specified by simulation and comparison with the benchmark method. According to the obtained results, for a specific period of time, a better interaction has been established between the average achievement of the final SOC and the financial profit of the integrated energy system under the proposed EMS. According to the proposed method, for a ۱۰% reduction in the final SOC compared to the benchmark method, the minimum financial benefit is about ۰.۲۶۰۷ pounds (received from the grid), equivalent to ۰.۲۰۸۲ pounds (paid to the grid) in the benchmark method.

Keywords:

Energy Mannagement , Multiport Converter , Electric Vehice , Photovoltaic system