Title :
Spectral analysis and EMI comparison of PWM, quasi-resonant, and resonant converters
Author :
Zhang, Y.F. ; Yang, L. ; Lee, C.Q.
Author_Institution :
Dept. of Electr. Eng. & Comput. Sci., Illinois Univ., Chicago, IL, USA
Abstract :
In this paper, a theoretical method for analyzing the spectra of modulated control signals for PWM, Quasi-Resonant Converters (QRC), and Resonant Converters (RC) is presented. A comparison of the EMI performance of the QRC, RC, and PWM converters is given based on the spectral bandwidth. Our study shows that, for the same line and load variation, the QRC and RC have better EMI performance than the PWM converter
Keywords :
PWM power convertors; electromagnetic interference; resonant power convertors; spectral analysis; EMI performance; PWM converters; modulated control signal spectra; quasi-resonant converters; resonant converters; spectral analysis; spectral bandwidth; Bandwidth; Electromagnetic interference; Frequency modulation; Load management; Pulse width modulation; Pulse width modulation converters; Radio control; Resonance; Signal analysis; Spectral analysis; Switching frequency; Turning;
Conference_Titel :
Circuits and Systems, 1994., Proceedings of the 37th Midwest Symposium on
Conference_Location :
Lafayette, LA
Print_ISBN :
0-7803-2428-5
DOI :
10.1109/MWSCAS.1994.519044
