Averaged modelling and analysis of buck ZCS-QRC

Author

Sun, Jian ; Wang, Xingren ; Han, Xisheng

Author_Institution

Dept. of Automatic Control, Beijing Univ. of Aeronaut. & Astron., China

fYear

1992

Firstpage

680

Abstract

A large signal nonlinear averaged model of buck ZCS-QRC is established by using the averaging method for discontinuous systems with two time scales (AMDTTS). The validity of the application of this method is verified by showing that the assumptions, under which AMDTTS can be justified, are strictly fulfilled by the converter model. The accuracy of the averaged model is guaranteed by the fact that the parameter values of resonant elements are much smaller than that of the filter elements. Analytic derivation of the static characteristics and simulated dynamic responses show that the averaged model is a very good continuous approximation of the original piecewise liner model

Keywords

approximation theory; network analysis; power convertors; switching circuits; ZCS; accuracy; averaged model; averaging method; buck; continuous approximation; discontinuous systems; dynamic responses; filter elements; large signal nonlinear averaged model; piecewise liner model; quasi-resonant power convertors; resonant elements; switching circuits; time scales; Analytical models; Automatic control; Filters; Piecewise linear techniques; Resonance; State-space methods; Sun; Switching converters; Topology; Zero current switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics, 1992., Proceedings of the IEEE International Symposium on

Conference_Location

Xian

Print_ISBN

0-7803-0042-4

Type

conf

DOI

10.1109/ISIE.1992.279689

Filename

279689