Hybrid Energy System Using ANFIS For CC-CV Battery Charging

A hybrid system is a combination of two or more energy sources. The most used energy sources are solar panels and batteries. Solar panel energy sources have variable currents and voltages that depends on irradiation and temperature. Besides, when both energy sources produce a voltage that exceeds the maximum battery limitation, it can cause an overcharge that can reduce the battery life. To overcome the voltage and current from solar panels that fluctuate, a DC-DC Converter is needed. Meanwhile it is necessary to choose an appropriate control system and charging method to prevent overcharging battery. In this research, a hybrid system with a multi-input buck converter proposed with ANFIS control for battery charging using the CC-CV method. From simulation results through the reliability test, control ANFIS can maintain the current and voltage according to the setpoint of 3A and 14.4V with less than 5% error value. ANFIS control can change conditions from CC to CV where CC-CV displacement occurs when the SOC of the battery is 99.76%.