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

fYear

2008

fDate

8-10 Dec. 2008

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/EDSSC.2008.4760746

Filename

4760746