Energy management strategy based on fuzzy logic for compound RES/ESS used in stand-alone application

This paper deals with the development of intelligent power management strategy (PMS) of renewable energy source (RES) associate an energy storage system (ESS) used in standalone application. The proposed system composed of renewable energy source is photovoltaic (PV) and energy storage system is a hydrogen fuel cell (FC) and battery energy storage. The system consists in principal of PV generator, an alkaline water electrolyser, a storage gas tank, a proton exchange membrane fuel cells (PEMFC) and battery is added to ensure continuous power supply and to take care of the intermittent nature supplying power distribution. Electrical power from PV generator meets the user loads and the surplus power used for water electrolysis to produce hydrogen, it is the power electrolyser (Pe), or stored in the battery. The system controlled using an intelligent fuzzy logic controller (FLC) to manage the power flow. The aim of this study is to optimize the proposed power generation system that guarantees the energy continuity and maximise the production of hydrogen. Prices rules of fuzzy switching regulators as conform the proposed configuration to ensure an optimal injecting of the FC power and to use the surplus power for water electrolysis. The proposed fuzzy logic energy management strategy (FLPMS) enables to convert the total PV produced power, get involved the fuel cell to the deficit power demands, maximise the production of the hydrogen and ensure the contentious charges/discharges of the battery.