FUZZY LOGIC-BASED ENERGY MANAGEMENT CONTROLLER FOR A HYBRID SOLAR WATER PUMPING SYSTEM

Abstract

This paper presents the design, modeling, and analysis of a fuzzy logic-based energy management controller (EMC) for a hybrid solar photovoltaic (PV) water pumping system. The hybrid system is made up of solar modules, a variable speed diesel generator (VSDG), maximum power point tracking (MPPT) controllers, battery storage, an energy management controller, a bi-directional converter, and a direct current (DC) water pump. The EMC, based on fuzzy logic (FL), is responsible for managing the flow of energy throughout the hybrid system to ensure an undisturbed power supply to the water pump. The PV array, battery bank, and VSDG are all sized to power a 2.2 kW water pump and the maximum power point tracking controllers are proposed for improving the efficiency of PV modules. The system components are modeled in the MATLAB/Simulink environment. Several case scenarios were considered and simulated in the MATLAB/Simulink environment to evaluate the proposed system. The proposed EMC demonstrated the successful management and control of the energy flow within the hybrid system with less dependency on the VSDG. The EMC was also able to regulate the charging and discharging of the battery bank.

Keywords

• energy management controller
• fuzzy logic
• maximum power point tracking controllers
• variable speed diesel generator