Title :
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
fDate :
7/1/1995 12:00:00 AM
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;
Journal_Title :
Power Electronics, IEEE Transactions on
