Title :
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
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;
Conference_Titel :
Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE
Conference_Location :
Charlotte, NC
DOI :
10.1109/APEC.2015.7104371
