Steady-state analysis of soft-switching converters

Author

Femia, Nicola ; Spagnuolo, Giovanni ; Vitelli, Massimo

Author_Institution

D.I.I.I.E., Salerno Univ., Fisciano, Italy

Volume

49

Issue

7

fYear

2002

fDate

7/1/2002 12:00:00 AM

Firstpage

939

Lastpage

954

Abstract

Steady-state analysis of soft-switching converters is discussed in this paper. Finding the steady-state solution of soft-switching converters by means of start-up transient simulation may involve onerous computations and convergence failure, because of the mix of fast and slow natural frequencies determined respectively by the presence of soft-switching Lr-Cr cells elements and bulky L-C filter elements. The numerical method proposed in this paper shows high reliability and fast convergence, thanks to the adoption of an interval analysis based technique for the detection of commutations and of a compensation theorem based technique for the analysis of commutations. Some examples of steady-state analysis of two dc-dc converters, an inverter and a power factor corrector are presented to highlight the good performances of the simulation algorithm

Keywords

DC-AC power convertors; DC-DC power convertors; commutation; convergence of numerical methods; invertors; polynomial approximation; power engineering computing; power factor correction; state-space methods; switching circuits; DC-AC converter; DC-DC converters; buck converter; commutation instants; fast convergence; fast natural frequencies; high reliability; interval analysis based technique; inverter; polynomial approximation; power electronics; power factor corrector; slow natural frequencies; soft-switching converters; start-up transient simulation; state-space model; steady-state analysis; Algorithm design and analysis; Computational modeling; Convergence of numerical methods; DC-DC power converters; Filters; Frequency conversion; Inverters; Performance analysis; Reliability theory; Steady-state;

fLanguage

English

Journal_Title

Circuits and Systems I: Fundamental Theory and Applications, IEEE Transactions on

Publisher

ieee

ISSN

1057-7122

Type

jour

DOI

10.1109/TCSI.2002.800470

Filename

1016826