DC-DC conversion based on ZSI and boost rectifier using fuzzy logic control

This paper presents the application of ZSI for DC-DC conversion where both the inverter and converter stages is being controlled. The application of such system is in fuel cell. The fuel cell voltage output is very less which needs to be boosted up as per the requirement. So, ZSI performs both the boosting and inversion of voltage in single stage. The ZSI is controlled by simple boost control technique with the modification in traditional sinusoidal pulse width modulation. For second stage, the controller is designed for PWM boost rectifier. Fuzzy logic controller is integrated in the feedback loop and linear programming method is applied to shape the input current waveform. With fuzzy logic controller, the constant voltage is being obtained across the resistive load. The proposed method is simulated in SimPower System in MATLAB.