Smart Integration and Energy Optimization of EVs Charging Systems in a Nanogrid

Abstract

The electrification of the transportation for a sustainable mobility is an outcome of the European strategy to reduce the environmental pollution. It requires the need to upgrade the electric distribution system with smart infrastructures able to locally manage the energy demand of the Electric Vehicles (EVs) charging systems. A first level of integration can be implemented in smart homes and nanogrids. In such scenario, local renewable energy sources, energy storage systems, smart appliances and EVs charging points can be managed in a smart way, with the aim to minimize the stress on the distribution grid given by the stochastic and intermittent behaviour of the aggregated demand. This paper presents a study focused on the energy flow optimization of a smart home equipped with a bidirectional EV charging wallbox, a local energy storage system (ESS) and two deferrable appliances (DAs). The impact of the smart charging, the DAs and the local ESS in the smart home are evaluated and discussed in detail considering different case studies.