Seamless dynamic model for DC-DC converters applicable to bi-directional power transfer

Author

Imamura, Yusuke ; Ramadan, Husam A. ; Sihun Yang ; Dousoky, Gamal M. ; Shoyama, Masahito

Author_Institution

Kyushu Univ., Fukuoka, Japan

fYear

2013

fDate

2-6 Sept. 2013

Firstpage

1

Lastpage

10

Abstract

In this paper, seamless model of bi-directional DC-DC converter which is applicable to bi-directional power transfer is proposed. Conventional modeling method of bi-directional DC-DC converter is complex, because different models are needed for different directions of power flow. On the other hand, seamless model can be applied for both directions of power flow. Seamless circuit model is expressed by voltage source and bi-polar current source, and polarity of current source shows direction of power flow. In this model, control loop need to be switched by direction of power flow. Therefore analyzing and controlling bi-directional DC-DC converter is much easier than conventional way. Seamless dynamic model are derived by state-space averaging method. Analytical, simulated, experimental results are investigated, and availability of seamless model is suggested.

Keywords

DC-DC power convertors; load flow; switched mode power supplies; bidirectional DC-DC converters; bidirectional power transfer; bipolar current source; control loop; power flow; seamless circuit model; seamless dynamic model; state-space averaging method; voltage source; Analytical models; Batteries; Bidirectional control; Impedance; Integrated circuit modeling; Load flow; Load modeling; Converter control; DC power supply; Modeling; Renewable Energy System; Switched-mode power supply;

fLanguage

English

Publisher

ieee

Conference_Titel

Power Electronics and Applications (EPE), 2013 15th European Conference on

Conference_Location

Lille

Type

conf

DOI

10.1109/EPE.2013.6631843

Filename

6631843