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A Switched Capacitor Based AC/DC Resonant Converter for High Frequency AC Power Generation

Author

Listed:
  • Cuidong Xu

    (Department of Electrical Engineering, the Hong Kong Polytechnic University, Hong Kong, China)

  • Ka Wai Eric Cheng

    (Department of Electrical Engineering, the Hong Kong Polytechnic University, Hong Kong, China)

Abstract

A switched capacitor based AC-DC resonant power converter is proposed for high frequency power generation output conversion. This converter is suitable for small scale, high frequency wind power generation. It has a high conversion ratio to provide a step down from high voltage to low voltage for easy use. The voltage conversion ratio of conventional switched capacitor power converters is fixed to n , 1/ n or −1/ n (n is the switched capacitor cell). In this paper, A circuit which can provide n , 1/ n and 2 n/m of the voltage conversion ratio is presented ( n is stepping up the switched capacitor cell, m is stepping down the switching capacitor cell). The conversion ratio can be changed greatly by using only two switches. A resonant tank is used to assist in zero current switching, and hence the current spike, which usually exists in a classical switching switched capacitor converter, can be eliminated. Both easy operation and efficiency are possible. Principles of operation, computer simulations and experimental results of the proposed circuit are presented. General analysis and design methods are given. The experimental result verifies the theoretical analysis of high frequency AC power generation.

Suggested Citation

  • Cuidong Xu & Ka Wai Eric Cheng, 2015. "A Switched Capacitor Based AC/DC Resonant Converter for High Frequency AC Power Generation," Energies, MDPI, vol. 8(10), pages 1-19, September.
    • Handle: RePEc:gam:jeners:v:8:y:2015:i:10:p:10842-10860:d:56526
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    References listed on IDEAS

    as
    1. Yi-Feng Wang & Liang Yang & Cheng-Shan Wang & Wei Li & Wei Qie & Shi-Jie Tu, 2015. "High Step-Up 3-Phase Rectifier with Fly-Back Cells and Switched Capacitors for Small-Scaled Wind Generation Systems," Energies, MDPI, vol. 8(4), pages 1-27, April.
    2. Mohamed Daowd & Mailier Antoine & Noshin Omar & Peter Van den Bossche & Joeri Van Mierlo, 2013. "Single Switched Capacitor Battery Balancing System Enhancements," Energies, MDPI, vol. 6(4), pages 1-26, April.
    3. Mohamed Daowd & Mailier Antoine & Noshin Omar & Philippe Lataire & Peter Van Den Bossche & Joeri Van Mierlo, 2014. "Battery Management System—Balancing Modularization Based on a Single Switched Capacitor and Bi-Directional DC/DC Converter with the Auxiliary Battery," Energies, MDPI, vol. 7(5), pages 1-41, April.
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