High Step-Up Converter Series Based on the Diode-Capacitor Network

Abstract:

This essay is about the application of a diode-capacitor network on conventional non-isolated DC–DC converter. The study will focus on obtaining high step-up voltage gain, low switch voltage stress, simple control, and high conversion efficiency. Three single-switch step-up converters with high step-up ratio based on the diode-capacitor network are proposed. The principle of operation and theoretical analysis of every single-switch step-up converter is evaluated for both continuous and discontinuous conduction modes. Given the mirror-symmetrical characteristic of the diode-capacitor network, cascade single-switch step-up converters based on the single-switch positive-output step-up converter are achieved when several diode-capacitor networks are arranged in series. Simulation analysis and experimental results obtained from the implemented prototypes operating at 40 kHz are provided to verify the performances of the proposed step-up converters.

• Periodical: Applied Mechanics and Materials (Volumes 719-720)
• Pages: 603-610
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.719-720.603
• Online since: January 2015
• Authors: Qi Chen*, Yu Qi Wu, Jia Lin Ma
• Keywords: Diode-Capacitor, Ripple, Single-Switch, Step-up, Voltage Stress

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