Abstract

This paper presents a step-up zeta converter with wide-range control of input variation voltage using fuzzy logic. A wide range of converter control is commonly applied as part of the Energy Management System (EMS) to provide a constant output voltage. In this paper, a Photovoltaic (PV) represents a high variation of the voltage source. To overcome the fluctuating PV output voltage, a zeta-type DC-DC converter is used to keep it constant at a value of 24V DC. Zeta converters have lower output voltage ripple and relatively higher efficiency than other types of DC-DC converters. The results show that Zeta Converter can increase the output voltage to 24V with a minimum input voltage of 17V, with an average efficiency of 85.83% in simulation and 71.9% during implementation. The fuzzy algorithm can keep the output voltage constant at 24V with various input voltages.

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