Title :
Modeling and close-loop control strategies of Switched Z-source Isolated Bidirectional DC-DC Converter
Author :
Xiuyi Li ; Miao Zhu ; Jianwen Zhang ; Xu Cai
Author_Institution :
Dept. of Electr. Eng., Shanghai Jiao Tong Univ., Shanghai, China
Abstract :
The Switched Z-source Isolated Bidirectional DC-DC Converter (SZIBDC) is a novel topology that inherits the advantages of Dual Active Bridge (DAB) while overcoming its disadvantages. This paper presents the small-signal model of open-loop SZIBDC firstly. After that, five kinds of close-loop control strategies based on PI-regulator or Fuzzy Logic Controller (FLC) are theoretically analyzed and validated by simulation results. Their performance has been investigated from the perspective of steady and transient states. Finally a comparative study is made and relevant conclusions are drawn.
Keywords :
DC-DC power convertors; PI control; closed loop systems; fuzzy control; open loop systems; switching convertors; DAB; FLC; PI-regulator; close-loop control strategies; dual active bridge; fuzzy logic controller; open-loop SZIBDC; small-signal model; steady states; switched Z-source isolated bidirectional dc-dc converter; transient states; Computational modeling; Load modeling; Mathematical model; Resistance; Static VAr compensators; Topology; Voltage control; PI control; SZIBDC; control strategies; fuzzy control; small-signal model;
Conference_Titel :
Electronics and Application Conference and Exposition (PEAC), 2014 International
Conference_Location :
Shanghai
DOI :
10.1109/PEAC.2014.7037996
