Fast computation of Z-type network parameters for stability analysis of power electronics converter systems

Author

Borowy, Bogdan S. ; Wagner, Edward T.

Author_Institution

SatCon Appl. Technol., Cambridge, MA, USA

fYear

2002

fDate

3-4 June 2002

Firstpage

11

Lastpage

17

Abstract

This paper presents a method for fast computation or Z-parameters of power converters using MATLAB simulation tools. Stability analysis or distributed power converters is based on investigation of an interaction between the output impedance of a converter at one end and the cumulative input impedance of converters at the other end or a DC bus. The existing methods of Z-parameter calculations involve many theoretical derivations. The proposed method eliminates, the need for a tedious theoretical derivation of Z-parameters of the interconnected converters and provides a quick evaluation of stability at any operating point. Through the use of this method, the complexities of a complete nonlinear model are not an obstacle for stability analysis.

Keywords

circuit simulation; circuit stability; electric impedance; power convertors; power engineering computing; transfer functions; DC bus; MATLAB; Z-type network parameters computation; computer simulation tools; cumulative input impedance; distributed power converters; interconnected converters; nonlinear model; operating point; output impedance; power electronics converter systems; stability analysis; Circuits; Computational modeling; Computer networks; Impedance; Linear systems; Mathematical model; Power electronics; Power system stability; Stability analysis; Stability criteria;

fLanguage

English

Publisher

ieee

Conference_Titel

Computers in Power Electronics, 2002. Proceedings. 2002 IEEE Workshop on

ISSN

1093-5142

Print_ISBN

0-7803-7554-8

Type

conf

DOI

10.1109/CIPE.2002.1196708

Filename

1196708