Modeling and simulation of switched capacitor converters for electric vehicle energy storage systems

This paper presents the analysis and novel controller design for a hybrid 4-quadrant (4-Q) switched-capacitor (SC) Luo and a conventional buck-boost bidirectional DC/DC converters, for HEV/PHEV energy storage system applications, based on power of traction motor and battery current gradient. Features of voltage step-down, voltage step-up, and bi-directional power flow are integrated into a single circuit. The novel hybrid controller strategy enables simpler dynamics compared to a standard buck converter, with input filter, good regulation capability, low EMI, lower source current ripple, ease of control, and continuous input current waveform in both modes of operation (buck and boost modes).

[1]  A. Khaligh,et al.  Power electronics intensive solutions for advanced electric, hybrid electric, and fuel cell vehicular power systems , 2006, IEEE Transactions on Power Electronics.

[2]  Srdjan M. Lukic,et al.  Topological overview of hybrid electric and fuel cell vehicular power system architectures and configurations , 2005, IEEE Transactions on Vehicular Technology.

[3]  H. Chung,et al.  Development of a generalized switched-capacitor DC/DC converter with bi-directional power flow , 2000, 2000 IEEE International Symposium on Circuits and Systems. Emerging Technologies for the 21st Century. Proceedings (IEEE Cat No.00CH36353).

[4]  M. Veerachary,et al.  Peak-Current Mode control of Hybrid Switched Capacitor Converter , 2006, 2006 International Conference on Power Electronic, Drives and Energy Systems.

[5]  Sheldon S. Williamson,et al.  Power-Electronics-Based Solutions for Plug-in Hybrid Electric Vehicle Energy Storage and Management Systems , 2010, IEEE Transactions on Industrial Electronics.

[6]  Fang Lin Luo,et al.  Luo-Converters, a series of new DC-DC step-up (boost) conversion circuits , 1997, Proceedings of Second International Conference on Power Electronics and Drive Systems.

[7]  Srdjan M. Lukic,et al.  Energy Storage Systems for Automotive Applications , 2008, IEEE Transactions on Industrial Electronics.

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

[9]  Fang Lin Luo,et al.  Re-lift circuit: a new DC-DC step-up (BOOST) converter , 1997 .

[10]  M. Veerachary.  Control of Switched Capacitor Step-Down Buck Converter , 2006, IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics.

[11]  Fang Lin Luo,et al.  Positive output Luo converters: voltage lift technique , 1999 .

[12]  Fang Lin Luo,et al.  Luo-converters, voltage lift technique , 1998, PESC 98 Record. 29th Annual IEEE Power Electronics Specialists Conference (Cat. No.98CH36196).

[13]  Fang Lin Luo,et al.  Advanced DC/DC Converters , 2003 .