An Improved Variable Switching Frequency Modulation Strategy for Three-Level converters with Reduced Conducted EMI

2019 ◽  
Author(s):  
Jianan Chen ◽  
Dong Jiang ◽  
Wei Sun ◽  
Zewei Shen ◽  
Yechi Zhang
Keyword(s):  
Frequency Modulation ◽  
Switching Frequency ◽  
Conducted Emi

scholarly journals Conducted EMI of Switching Frequency Modulated Boost Converter

2013 ◽  
Vol 3 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Deniss Stepins
Keyword(s):  
Frequency Modulation ◽  
Experimental Verification ◽  
Electromagnetic Interference ◽  
Modulation Frequency ◽  
Boost Converter ◽  
Switching Frequency ◽  
Research Papers ◽  
Theoretical Results ◽  
Analysis Line ◽  
Conducted Emi

Abstract In this paper conducted electromagnetic interference (EMI) of boost converter with switching frequency modulation (SFM) is theoretically analyzed in details. In the analysis line impedance stabilization network parameters, power inductor and input filtering capacitor parameters are taken into account. The analysis shows that the conducted EMI attenuation due to the use of SFM depends not only on modulation index as it is assumed in numerous research papers, but also on central switching frequency. Useful expressions to numerically calculate SFM boost converter conducted EMI spectrum and attenuation due to the use of triangular and sawtooth modulation waveforms are derived. Additionally experimental verification of the theoretical results is performed using a superheterodyne spectrum analyzer. Moreover a procedure for the choice of optimum SFM parameters (modulation waveform, frequency deviation and modulation frequency) to get maximum conducted EMI attenuation is proposed.

Conducted EMI Reduction in Power Converters by Means of Periodic Switching Frequency Modulation

2007 ◽  
Vol 22 (6) ◽  
pp. 2271-2281 ◽  
Author(s):  
David Gonzalez ◽  
Josep Balcells ◽  
Alfonso Santolaria ◽  
Jean-Charles Le Bunetel ◽  
Javier Gago ◽  
...  
Keyword(s):  
Frequency Modulation ◽  
Power Converters ◽  
Switching Frequency ◽  
Conducted Emi ◽  
Periodic Switching ◽  
Emi Reduction

Switching frequency modulation for GaN-based power converters

2015 ◽  
Author(s):  
B. Weiss ◽  
R. Reiner ◽  
R. Quay ◽  
P. Waltereit ◽  
F. Benkhelifa ◽  
...  
Keyword(s):  
Frequency Modulation ◽  
Power Converters ◽  
Switching Frequency
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