Small-signal model of a voltage source inverter (VSI) considering the dead-time effect and space vector modulation types

Author

Ahmed, S. ; Shen, Z. ; Mattavelli, P. ; Boroyevich, D. ; Jaksic, M. ; Karimi, K. ; Fu, J.

Author_Institution

Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA

fYear

2011

fDate

6-11 March 2011

Firstpage

685

Lastpage

690

Abstract

This paper presents a modified small-signal model of a voltage source inverter (VSI) that captures model nonlinearities such as dead time and modulation effects that were not presented in the literature. Previous research has concentrated on developing compensation methods for these types of phenomena in a switching model, but none actually derived an analytical model that can predict them. In this paper, the small-signal model of the VSI in literature is used, and the different phenomena are then incorporated into the model to get a complete one. In addition, the output impedance of the VSI is derived with the modified small-signal model, compared to the conventional one and validated with switching model and experimental results.

Keywords

invertors; power system simulation; analytical model; dead-time effect; small-signal model; space vector modulation; switching model; voltage source inverter; Analytical models; Impedance; Integrated circuit modeling; Inverters; Mathematical model; Support vector machines; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Power Electronics Conference and Exposition (APEC), 2011 Twenty-Sixth Annual IEEE

Conference_Location

Fort Worth, TX

ISSN

1048-2334

Print_ISBN

978-1-4244-8084-5

Type

conf

DOI

10.1109/APEC.2011.5744670

Filename

5744670