Employing the low switching frequency space vector modulators in multi-modular three-level converters

Author

Saeedifard, M. ; Bakhshai, A.R. ; Rashidinejad, M.

Author_Institution

Dept. of Electr. Eng., Isfahan Technol. Univ., Iran

Volume

1

fYear

2003

fDate

4-7 May 2003

Firstpage

497

Abstract

This paper presents a novel low switching frequency SVM in conjunction with a modified delayed sampling principle for generating the switching patterns of individual GTO-based three-level units of a multi-module converter structure. Alternative switching strategies are compared with respect to their impact on output voltage spectrum, switching frequency and THD. This paper also shows that the proposed low frequency switching strategies are well appropriate for capacitor voltage balancing too. The validity of the proposed switching schemes has been verified by simulation.

Keywords

capacitor switching; modulators; sampling methods; switching convertors; capacitor voltage; delayed sampling technique; low switching frequency; multimodular three-level converters; output voltage spectrum; space vector modulation; Delay; Frequency conversion; Frequency modulation; Inverters; Sampling methods; Space technology; Support vector machines; Switching converters; Switching frequency; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical and Computer Engineering, 2003. IEEE CCECE 2003. Canadian Conference on

ISSN

0840-7789

Print_ISBN

0-7803-7781-8

Type

conf

DOI

10.1109/CCECE.2003.1226446

Filename

1226446