Title :
Study on the Dynamical Characteristic for Current-Feedback BUCK Converter
Author :
Yuan Chenhu ; Wan jianru ; Zhou Hailiang
Author_Institution :
Sch. of Electr. Eng. & Autom., Tianjin Univ., Tianjin, China
Abstract :
Current-feedback BUCK Converter, namely CCBUCK, which is the dominant component of SMPS system, have rich dynamical characteristic. For revealing internal relation between stability and system circuit parameters, Dynamical Characteristic for Current-feedback BUCK Converter was studied. Two closed loop circuit model based on PI regulator was built. The simulation model for CCBUCK, controlled by peak current or valley value current, was constructed by using the exact state equations of CCBUCK. Through varying parameters nonlinearity characteristic was simulated and analyzed by numerical method. Through the experiments, the result shows CCBUCK is very sensitive to input voltage, while nonlinearity of CCBUCK, controlled by peak current or valley value current, was opposite. The research results could serve guidance for circuit parameters selection in CCBUCK converter application.
Keywords :
PI control; circuit feedback; closed loop systems; power convertors; power system control; power system simulation; switched mode power supplies; CCBUCK; PI regulator; SMPS system; circuit parameters selection; closed loop circuit; current-feedback buck converter; dynamical characteristic; nonlinearity characteristic; stability; system circuit parameters; Bifurcation; Chaos; Current control; Integrated circuit modeling; Pulse width modulation; Switches;
Conference_Titel :
Control, Automation and Systems Engineering (CASE), 2011 International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4577-0859-6
DOI :
10.1109/ICCASE.2011.5997895