DocumentCode :
2329698
Title :
Effects of switching frequency modulation on EMI performance of a converter using spread spectrum approach
Author :
Rahkala, M. ; Suntio, T. ; Kalliomäki, K.
Author_Institution :
Electr. Eng. Dept., Rovaniemi Polytechnics, Finland
Volume :
1
fYear :
2002
fDate :
2002
Firstpage :
93
Abstract :
A novel approach to simulate the EMI emissions comparable to EMC standards (CISPR 16/22) from the point of view of average (AV) and quasi-peak (QP) detection are presented. In addition an algorithm to convert the high-resolution FFT data to correspond with the defined measurement bandwidths is presented. A homodyne receiver approach was found to be useful for modeling the frequency selective process of EMI measurement equipment. The developed methods can be effectively used to study the effect of spread-spectrum technique to reduce EMI emissions. It was noticed that in order to optimize EMI in respect to AV detection a low frequency jittering is optimal. From a QP detection point of view it is favorable to apply a modulation frequency in the order of the same magnitude as the measurement of the bandwidth demanded
Keywords :
electromagnetic compatibility; electromagnetic interference; fast Fourier transforms; frequency modulation; homodyne detection; jitter; power convertors; CISPR 16/22; EMC standards; EMI measurement equipment; EMI performance; average detection; high-resolution FFT data; homodyne receiver; low frequency jittering; measurement bandwidths; modulation frequency; quasi-peak detection; spread spectrum approach; switching frequency modulation; Bandwidth; Electromagnetic compatibility; Electromagnetic interference; Frequency modulation; Noise reduction; Power supplies; Quadratic programming; Spread spectrum communication; Switching converters; Switching frequency;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Applied Power Electronics Conference and Exposition, 2002. APEC 2002. Seventeenth Annual IEEE
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-7404-5
Type :
conf
DOI :
10.1109/APEC.2002.989232
Filename :
989232
Link To Document :
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