Title :
Stability analysis and AC modeling of high-efficiency BUCK/BOOST converter
Author :
Chen, L.L. ; Xu, J.P. ; Cheng, S.N. ; Liu, L. ; Deng, L.F.
Author_Institution :
Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan
Abstract :
A linear model of voltage-controlled BUCK/BOOST converter in CCM mode is built by means of inductor-voltage averaging approximation and capacitor-current averaging approximation according to working conditions. It is shown that the closed-loop control-to-output characteristics coincide with the results derived by the state-space averaging method. Dynamic characteristic of the system is simulated by using MATLAB in order to design the compensation network. The simulated results exhibit good agreement with those by HSPICE and experiment results, indicating the validity of the model and compensation network.
Keywords :
mathematics computing; power convertors; power system control; power system stability; AC modeling; CCM mode; HSPICE; MATLAB; capacitor-current averaging approximation; closed-loop control-to-output characteristics; inductor-voltage averaging approximation; state-space averaging method; ttability analysis; voltage-controlled BUCK/BOOST converter; Buck converters; Circuit topology; DC-DC power converters; Mathematical model; Power system modeling; Stability analysis; Switches; Switching circuits; Switching converters; Transfer functions; AC model; Buck/Boost converter; compensator; stability;
Conference_Titel :
Electron Devices and Solid-State Circuits, 2008. EDSSC 2008. IEEE International Conference on
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-2539-6
Electronic_ISBN :
978-1-4244-2540-2
DOI :
10.1109/EDSSC.2008.4760746
