Unified Modeling of Rectifier-Controlled DC-Power Supplies

Author

Grötzbach, Manfred ; Lutz, Rainer Von

Author_Institution

Department of Electrical Engineering, WE 7, University of Federal Defense Munich, Werner-Heisenberg-Weg 39, D-8014 Neubiberg, West Germany.

Issue

2

fYear

1986

fDate

4/1/1986 12:00:00 AM

Firstpage

90

Lastpage

100

Abstract

The known analysis of dc-dc converters in discontinuous operation mode and with voltage commutation based on a piecewise-linear description is extended to the analysis of line-commutated converters. With the latter as system-dependent pulsewidths the overlap angles appear, which can be computed in a manner analogous to the current-flow duration and the reloading time, respectively. This leads to a unified state-space modeling of dc-dc and ac-dc converters by which the steady-state and the dynamic small-signal behavior can be evaluated directly. If the piecewise-defined system equations are integrated numerically, a rather generalized analysis of power converters is found if the structure of switched systems is taken into account. As an illustrative example, a voltage-commutated dc-dc converter with a nonlinear dc inductance is studied.

Keywords

AC-DC power converters; DC-DC power converters; Nonlinear dynamical systems; Nonlinear equations; Piecewise linear techniques; Power system modeling; Steady-state; Switched systems; Switching converters; Voltage;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.1986.4766287

Filename

4766287