DEVELOPMENT OF A FUZZY LOGIC TECHNIQUE FOR BIOGAS GENERATION OF ELECTRICAL ENERGY

Abstract

Production of biogas energy is one of the important technical solutions that contribute to the transformation of energy system from being fossil fuel dependent to renewable energy originated. Thus, comprehensive understanding of biogas energy is necessary in order to develop an accurate and robust model that will predict and control the biogas production. This research paper develops a fuzzy logic controller model for biogas generation of electrical energy. A fuzzy logic algorithm was designed to aid power delivery to the load in order to improve the performance of the biogas system. A decision was made for fuzzy logic using three operations: fuzzification process, inference engine for rule base and defuzzification process. The model developed was simulated using MATLAB-SIMULINK. The results showed that for biogas electrical power output with fuzzy logic controller, the power output increased by 3.65 kWh, which is 45.6% increase with introduction of fuzzy logic controller. The results demonstrated the applicability of the method. The fuzzy logic controller model produced smaller deviations and exhibited a superior predictive performance on forecasting of biogas production.