Design of current observer based on generalized model of Multiphase Boost Converter

Author

Li Wei ; Difu Zhan ; Yongtao Yao ; Yicheng Zhang

Author_Institution

Inst. of Electr. Eng., Tongji Univ., Shanghai, China

fYear

2015

fDate

15-19 March 2015

Firstpage

330

Lastpage

335

Abstract

Multiphase Boost Converter (MBC) is widely applied in DC systems such as fuel cells and super capacitors. However complexity of MBC system limits its performance and application. In this paper, generalized model of MBC which can deal with topological innovations and non-ideal factors is reviewed. Based on this model, controllability and observability features of MBC is analyzed. It is concluded that MBC is always controllable and as long as MBC parameters are asymmetric, observable conditions are always satisfied. Then full order observer for MBC is designed, so costly current sensors of each phase can be eliminated. Finally, MBC model is verified by simulation and experiment, and observer performance is examined by circuit simulation.

Keywords

fuel cells; power convertors; supercapacitors; DC system; MBC parameter; MBC system; current observer; fuel cell; generalized model; multiphase boost converter; nonideal factor; supercapacitor; Controllability; Inductors; Integrated circuit modeling; Mathematical model; Observers; Sensors; Topology;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE

Conference_Location

Charlotte, NC

Type

conf

DOI

10.1109/APEC.2015.7104371

Filename

7104371