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

The proposed zero-current-switching switched-capacitor quasi-resonant DC-DC converter is a new type of bidirectional power flow control conversion scheme. It possesses the conventional features of resonant switched-capacitor converters: low weight, small volume, high efficiency, low EMI emission and current stress. A zero-current-switching switched-capacitor step-up/step-down bidirectional converter is presented that can improve the current stress problem during bidirectional power flow control processing. It can provide a high voltage conversion ratio using four power MOSFET main switches, a set of switched capacitors and a small resonant inductor. The converter operating principle of the proposed bidirectional power conversion scheme is described in detail with circuit model analysis. Simulation and experiment are carried out to verify the concept and performance of the proposed bidirectional DC-DC converter.

[1]  Danny Sutanto,et al.  Multiple and fractional voltage conversion ratios for switched-capacitor resonant converters , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).

[2]  Der-Cherng Liaw,et al.  Parametric study of a resonant switched capacitor DC-DC converter , 2001, Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology. TENCON 2001 (Cat. No.01CH37239).

[3]  Ka Wai Eric Cheng,et al.  Zero-current switching switched-capacitor quasiresonant step-down converter , 2002 .

[4]  Yuang-Shung Lee,et al.  ZCS bi-directional DC-to-DC converter application in battery equalization for electric vehicles , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[5]  Fan Zhang,et al.  A magnetic-less DC-DC converter for dual voltage automotive systems , 2002 .

[6]  Henry Shu-Hung Chung,et al.  Generalized structure of bi-directional switched-capacitor DC/DC converters , 2003 .

[7]  Henry Shu-Hung Chung,et al.  Development of a switched-capacitor DC-DC converter with bidirectional power flow , 2000 .

[8]  Jih-Sheng Lai,et al.  Bi-directional DC to DC converters for fuel cell systems , 1998, Power Electronics in Transportation (Cat. No.98TH8349).

[9]  R. M. Bass,et al.  Analysis of charge pumps using charge balance , 2000, 2000 IEEE 31st Annual Power Electronics Specialists Conference. Conference Proceedings (Cat. No.00CH37018).

[10]  Ka Wai Eric Cheng,et al.  Zero-current-switching switched-capacitor converters , 2001 .