Title :
A critical assessment of the implementation of PWM techniques in switchmode magnet power supplies
Author :
Jin, Hye-Jin ; Lavers, J.D. ; Dewan, S.B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Concordia Univ., Montreal, Que., Canada
fDate :
7/1/1993 12:00:00 AM
Abstract :
The characteristics of a carrier-based pulse-width modulator under different modulation techniques are evaluated. Modulation with the most commonly used carrier waveforms (triangular and sawtooth waveforms) and sampling methods (uniform, double and natural sampling) is studied. In each case, the switching harmonics at the modulator output are calculated and the frequency response of the modulator is determined. Different modulation techniques are then compared, and the one that best suits switchmode magnet power supply applications is identified.
Keywords :
frequency response; pulse width modulation; switched mode power supplies; PWM; carrier waveforms; double sampling; frequency response; modulation techniques; natural sampling; pulse-width modulator; sawtooth waveforms; switchmode magnet power supplies; triangular waveforms; uniform sampling; Harmonic analysis; Harmonic distortion; Power supplies; Pulse width modulation; Sampling methods; Switches;
Journal_Title :
Electrical and Computer Engineering, Canadian Journal of
DOI :
10.1109/CJECE.1993.6592925
