DocumentCode :
3461197
Title :
Considerations for digital controllers targeted at conducted-noise spectrum-spreading in dc-dc converters
Author :
Dousoky, Gamal M. ; Shoyama, Masahito
Author_Institution :
Kyushu Univ., Fukuoka, Japan
fYear :
2010
fDate :
21-24 June 2010
Firstpage :
920
Lastpage :
926
Abstract :
A substantial part of the manufacturing cost of power converters for telecommunication applications involves designing filters to comply with the EMI limits. This paper investigates the effect of several frequency modulation profiles on conducted-noise reduction in dc-dc converters with programmed switching controller. The converter is operated in variable frequency modulation regime. Twelve switching frequency modulation profiles have been studied. Some of the modulation data are prepared using MATLAB software, and others are generated online. Moreover, all the frequency profiles have been designed and implemented using FPGA and experimentally investigated. The experimental results show that the conducted-noise spreading depends on both the modulation sequence profile and the statistical characteristics of the sequence. Considering this investigation significantly reduces the filter size.
Keywords :
DC-DC power convertors; field programmable gate arrays; switching convertors; DC-DC converters; FPGA; conducted-noise reduction; conducted-noise spectrum spreading; digital controllers; frequency modulation; switching controller; Costs; DC-DC power converters; Digital control; Electromagnetic interference; Filters; Frequency modulation; Manufacturing; Switching converters; Telecommunication control; Telecommunication switching; DC-DC power conversion; Frequency Modulation; Noise Reduction; Programmed Switching;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Power Electronics Conference (IPEC), 2010 International
Conference_Location :
Sapporo
Print_ISBN :
978-1-4244-5394-8
Type :
conf
DOI :
10.1109/IPEC.2010.5543363
Filename :
5543363
Link To Document :
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