Power-Voltage and Load Control of a Multi-Port Converter Using Fuzzy Logic

The shift towards a sustainable and efficient power generation is essential for limiting global warming. Renewable but volatile energies must be complemented with hybrid power plants (HPPs) to ensure grid stability and security of supply. Grid connection of HPPs is established by multi-port converters (MPCs). A vital component of MPCs is the energy management system (EMS) which controls the power flow and maximizes its efficiency. This paper discusses the design of an EMS for power-voltage control and load control of a grid-tied MPC. Connected to the MPC is an HPP, which combines solid oxide fuel cells (SOFCs), a micro gas turbine (MGT) and a battery storage. The proposed EMS uses fuzzy logic to regulate the power flow within MPC. Hence, system boundaries are considered by the EMS.