Gerenciamento de sistemas de carregamento de veículos elétricos integrados à microrredes com geração distribuída

Abstract

This work proposes a management system for electric vehicle charging stations integrated into microgrids with photovoltaic renewable energy generation. Initially, a literature review of the main topics used in developing this work is presented. The problems and benefits of charging electric vehicles on the grid are also presented and discussed. This is followed by a presentation of the microgrid structure used in this work and the modeling of the elements that make it up: the arrangement of photovoltaic panels, user loads, the battery energy storage system, and electric vehicle parking. An energy management strategy was developed for charging electric vehicles and the battery system to meet the preferences of EV users and microgrid owners with EV charging systems. The proposed management algorithm is based on rules that offer EV owners different charging modes, considering load demand, photovoltaic generation, and energy costs in a microgrid with distributed generation. The main objective of the proposed strategy is to offer users different EV charging modes and meet their charging time and cost requirements, considering priorities and aspects that impact the supply of charging power. Subsequently, fuzzy logic controllers are incorporated into the rule-based manager in ECO and V2G charging modes and in the operation of the battery energy storage system. Simulations of the electric vehicle charging management system for different photovoltaic generation scenarios were carried out, analyzing and discussing the results in detail. The results obtained made it possible to verify the operation of the proposed management system for charging electric vehicles and supplying energy to the microgrid.