Abstract
The energy-transfer-capacitor in basic Cuk, Zeta and Sepic converters is split into two capacitors. The rectifier diode is replaced by two diodes that form with the two capacitors a switched-capacitor circuit, which appears connected between the input and output inductances of the original converter. As a result, hybrid circuits, presenting a higher DC voltage ratio than the classical Cuk, Zeta and Sepic converters, are obtained. Even if the new hybrid structures do not reach the DC gain of quadratic converters, they present a higher efficiency in processing the energy: unlike the cascaded converters whose efficiency is a product of the efficiencies of each block, the hybrid converters do not require an additional level of energy processing. A DC analysis, simulation and experimental results concerning the proposed circuits are presented.
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