Analytical and numerical analysis of dead-time distortion in power inverters

Author

Chierchie, Fernando ; Paolini, Eduardo E.

Author_Institution

Dept. de Ing. Electr. y de Computadoras, Univ. Nac. del Sur, Bahía Blanca, Argentina

fYear

2010

fDate

1-9 Oct. 2010

Firstpage

6

Lastpage

11

Abstract

The analytical spectrum of a pulse width modulated signal with dead-times is derived in this paper. The results are valid for any bounded, band limited signal. The harmonic content of the output voltage is computed by dividing the PWM signal in three components: a 50% duty cycle square-wave, a symmetrical, time-varying duty cycle square wave, and a pulse train that accounts for the dead-time. Specific expressions are obtained for simple modulating signals. Some numerical examples are included for comparison with theoretical results.

Keywords

PWM invertors; distortion; modulation; numerical analysis; PWM signal; analytical spectrum; bounded band limited signal; dead-time distortion; duty cycle square-wave; numerical analysis; power inverters; pulse train; pulse width modulated signal; time-varying duty cycle square wave; Educational institutions; Fourier transforms; Frequency modulation; IEEE catalog; Inverters; Pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Argentine School of Micro-Nanoelectronics Technology and Applications (EAMTA), 2010

Conference_Location

Montevideo

Print_ISBN

978-1-4244-6747-1

Electronic_ISBN

978-987-1620-14-2

Type

conf

Filename

5606373