Title :
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
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;
Conference_Titel :
Industrial Electronics, 1992., Proceedings of the IEEE International Symposium on
Conference_Location :
Xian
Print_ISBN :
0-7803-0042-4
DOI :
10.1109/ISIE.1992.279689
