A new quadratic boost converter with high voltage step-up ratio and reduced voltage stress

Abstract

In this paper, a new quadratic boost converter is proposed. Compared with the conventional quadratic boost converter, the new quadratic boost converter employs an additional capacitor-inductor-diode (CLD) cell consisting of an inductor, two diodes and two capacitors. The quadratic boost converter with CLD cell presented in this paper shows an improvement of the voltage step-up ratio over the conventional quadratic boost converter and boost converter. Consequently, it is well suited for extreme high voltage step-up ratio applications. The quadratic boost converter with CLD cell also shows a significant improvement in reduced voltage stresses of switch and diodes over the conventional quadratic boost converter and boost converter. The experimental results of the proposed converter have been presented to verify the analysis results.