Performance of a High-Efficiency Switched-Capacitor-Based Resonant Converter With Phase-Shift Control

This paper presents operating performance of a switched-capacitor-based resonant converter (SCRC) using a phase-shift control method. The proposed phase-shift control realizes zero-voltage switching operation, and thus achieves a high-conversion efficiency. A theoretical analysis shows that the SCRC can reduce its inductor volume compared with a conventional buck converter when the output voltage range is within 19%-81% of its input voltage. Experimental results verify the operating characteristics of the proposed method and show the improved conversion efficiency of more than 99%.

[1]  L.M. Tolbert,et al.  Multilevel DC–DC Power Conversion System With Multiple DC Sources , 2008, IEEE Transactions on Power Electronics.

[2]  Ka Wai Eric Cheng,et al.  Design and analysis of switched-capacitor-based step-up resonant converters , 2005, IEEE Transactions on Circuits and Systems I: Regular Papers.

[3]  Fumio Ueno,et al.  A realization of low‐power supplies using switched‐capacitor transformers and its analysis , 1983 .

[4]  H. Akagi,et al.  A Bidirectional DC–DC Converter for an Energy Storage System With Galvanic Isolation , 2007, IEEE Transactions on Power Electronics.

[5]  Fan Zhang,et al.  A New Design Method for High-Power High-Efficiency Switched-Capacitor DC–DC Converters , 2008, IEEE Transactions on Power Electronics.

[6]  Bo Zhang,et al.  Duty ratio control of resonant switched capacitor DC-DC converter , 2005, 2005 International Conference on Electrical Machines and Systems.

[7]  H. Fujita,et al.  Voltage-Balancing Circuit Based on a Resonant Switched-Capacitor Converter for Multilevel Inverters , 2008, IEEE Transactions on Industry Applications.

[8]  T. Ninomiya,et al.  Resonant switched capacitor converter with high efficiency , 2004, 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551).

[9]  A. Ioinovici,et al.  Switched-capacitor power electronics circuits , 2001 .

[10]  Fang Zheng Peng,et al.  A family of zero current switching switched-capacitor dc-dc converters , 2010, 2010 Twenty-Fifth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[11]  T. Ninomiya,et al.  Evaluation of Conducted Noise of Resonant Switched Capacitor Converter , 2006, INTELEC 06 - Twenty-Eighth International Telecommunications Energy Conference.

[12]  Fang Zheng Peng,et al.  Zero-current-switching multilevel modular switched-capacitor dc-dc converter , 2009, 2009 IEEE Energy Conversion Congress and Exposition.

[13]  Ka Wai Eric Cheng.  New generation of switched capacitor converters , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).

[14]  Ka Wai Eric Cheng,et al.  Unified analysis of switched-capacitor resonant converters , 2004, IEEE Transactions on Industrial Electronics.

[15]  P. Steimer,et al.  High power resonant Switched-Capacitor step-down converter , 2008, 2008 IEEE Power Electronics Specialists Conference.

[16]  Jih-Sheng Lai,et al.  Design of high-efficiency bidirectional DC-DC converter and high-precision efficiency measurement , 2008, 2008 34th Annual Conference of IEEE Industrial Electronics.

[17]  T. Ninomiya,et al.  Output Voltage Control of Resonant Boost Switched Capacitor Converter , 2007, 2007 Power Conversion Conference - Nagoya.

[18]  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).