1 Voltage Control of Dual Input Step-up SCI Converter using Fuzzy Switching Control Method

Dual input step-up Switched Capacitor Inductor (SCI) converters have been investigated in this paper. At first, the structure of this converter is reviewed and analyzed carefully. It has shown that besides capacitor and inductor, a small resonant inductor is also used in order to limit the current peak, which is caused by switched capacitor. Therefore, efficiency has been improved. In the proposed solution, fuzzy control method is used for controlling and switching the circuit. Simulation results have revealed that by using this method; the output waveforms are according to idealized ones while achieving a high voltage gained. In addition, by using such method, the output voltage ripple is significantly decreased.