DocumentCode
3381201
Title
Suppression of harmonic spikes in asynchronous sigma delta modulation by randomizing hysteresis window
Author
Aurasopon, A. ; Kumhom, P. ; Chamnongthai, K.
Author_Institution
Dept. of Electron. & Telecommun. Eng., King Mongkut´´s Univ. of Technol., Bangkok, Thailand
Volume
5
fYear
2004
fDate
23-26 May 2004
Abstract
This paper proposes to suppress the harmonic spikes in asynchronous sigma delta modulation by randomizing the hysteresis window for the distribution of the switching frequency and harmonic spectrum. The proposed scheme was examined in the dc/dc buck converter. The experimental results show that the proposed technique provides improved performance in terms of low peaks of harmonic while maintaining low output voltage ripple.
Keywords
DC-DC power convertors; asynchronous circuits; harmonics suppression; hysteresis; sigma-delta modulation; asynchronous sigma delta modulation; dc-dc buck converter; harmonic spectrum; harmonic spikes suppression; hysteresis window; low harmonic peaks; switching frequency; voltage ripple; Delta-sigma modulation; Electromagnetic interference; Frequency modulation; Hysteresis; Power harmonic filters; Pulse width modulation; Space vector pulse width modulation; Switching frequency; Variable speed drives; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2004. ISCAS '04. Proceedings of the 2004 International Symposium on
Print_ISBN
0-7803-8251-X
Type
conf
DOI
10.1109/ISCAS.2004.1329971
Filename
1329971
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