Control of hybrid renewable energy and storage-integrated multienergy microgrid with electric and gas boiler, electric vehicle, and household loads

Abstract

A hybrid renewable energy sources (RES) microgrid supported by battery storages (BS) is designed in this paper to feed residential demands including electric vehicle (EV), electric boiler (EB), and household loads. A gas boiler (GB) is also considered in the proposed microgrid to evaluate an entire thermal bus through the GB, EB, and an underfloor heating system. A constant-speed wind turbine (WT) and a PV power system are considered as RES to reduce the dependency of energy on the grid. Great importance is placed on the thermal and electrical power balance between sources and loads; hence, a fuzzy logic (FL)-based energy management system (EMS) is designed in this respect. The EMS was evaluated using Simulink under various weather conditions and thermal/electrical demands. The results show that the proposed EMS controlled the BS power and satisfied the requested demands under all conditions, while hardly intervening in the grid power.