Analysis of delta PWM static AC-DC converters

Author

Rahman, M. Azizur ; Esmail, Ali R D ; Choudhury, Mohammed A.

Author_Institution

Fac. of Eng. & Appl. Sci., Memorial Univ. of Newfoundland, St. John´´s, Nfld., Canada

Volume

10

Issue

4

fYear

1995

fDate

7/1/1995 12:00:00 AM

Firstpage

494

Lastpage

503

Abstract

An analysis and implementation of delta modulation (DM) technique in the control of AC-DC converters are presented in this paper. The DM technique offers advantages of easy implementation, continuous converter voltage control, and a direct control on the line harmonics. A simple model of the delta modulator is proposed to predict switching frequency, identify dominant harmonics, and determine switching points of the converter waveforms. Results of parametric variations of the modulator and performances of the single and three phase DM converters are reported. Experimental results of the single and three phase DM AC-DC converters validate the analytical results

Keywords

AC-DC power convertors; PWM power convertors; delta modulation; power system harmonics; switching circuits; voltage control; continuous converter voltage control; delta PWM static AC-DC converters; delta modulation; direct control; dominant harmonics identification; line harmonics; switching frequency prediction; switching points determination; AC-DC power converters; Delta modulation; Hysteresis; Power harmonic filters; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Switching converters; Voltage control;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.391948

Filename

391948