Frequency Analysis of PWM Inverters With Dead-Time for Arbitrary Modulating Signals

Author

Chierchie, Fernando ; Stefanazzi, Leandro ; Paolini, Eduardo E. ; Oliva, A.R.

Author_Institution

Inst. de Investig. en Ing. Electr. (IIIE) "Alfredo Desages", UNS, Bahia Blanca, Argentina

Volume

29

Issue

6

fYear

2014

fDate

Jun-14

Firstpage

2850

Lastpage

2860

Abstract

The effect of dead-time on the spectrum of pulse-width modulated signals is analyzed in this paper. The study is valid for arbitrary, band-limited modulating signals, extending previous results in the literature. A simple distortion index is developed that can be used at the design stage to select dead-time or switching frequency based on maximum allowed distortion. Experimental results with various band-limited signals reveal a very good agreement between the theoretical results and the experiments.

Keywords

PWM invertors; distortion; PWM inverters; arbitrary modulating signals; band-limited modulating signals; band-limited signals; dead-time effect; dead-time frequency; distortion index; frequency analysis; pulse-width modulated signals; switching frequency; Fourier transforms; Frequency modulation; Harmonic analysis; Indexes; Inverters; Pulse width modulation; Dead-time distortion; digital modulation; frequency spectrum; harmonic distortion; power amplifier; pulse-width modulation (PWM); switching amplifier;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2013.2276098

Filename

6572859