Zero-current-switching switched-capacitor bidirectional DC-DCconverter

• Main Authors: Yin-Yuan Chiu, 邱雲源
• Other Authors: Yuang-Shung Lee
• Format: Others
• Language: zh-TW
• Published: 2006
• Online Access: http://ndltd.ncl.edu.tw/handle/70559327738240605640

碩士 === 輔仁大學 === 電子工程學系 === 94 === This paper presents the new topologies of zero-current switching switched-capacitor (ZCS SC) quasi-resonant converters with bi-directional power flow control conversion schemes. It possesses the features of quasi resonant switched-capacitor converters: low weight, small volume, high efficiency, low EMI emission and low current stress. A family of zero-current switching switched-capacitor bi-directional converters is proposed to improve the current stress problem during the bi-directional power flow control processing. They are able to provide the voltage conversion ratios from 2 / (double-mode/half-mode) to n / (n-mode/ mode) by using four power MOSFET main switches and a set of switched-capacitors with a small series connected resonant inductor for non-inverting or inverting modes. The operation principle of converter operation of the proposed bi-directional power conversion scheme is described in detail with circuit model analysis for non-inverting/inverting mode. Simulation and experimental results are carried out to verify the concept and the performance of the proposed non-inverting/inverting ZCS SC bi-directional quasi-resonant converters.