Title :
A new switching frequency modulation scheme for EMI reduction in multiconverter topology
Author :
Mon, J. ; Gago, J. ; González, D. ; Balcells, J. ; Fernández, R. ; Gil, I.
Author_Institution :
Dept. d´´Eng. Electron., Univ. Politec. de Catalunya., Terrassa, Spain
Abstract :
This paper presents a modulation scheme in order to reduce conducted electromagnetic interference (EMI) generated by modular power converters with parallel topology. The proposed scheme is based on a combination of interleaving and Switching Frequency Modulation (SFM) techniques. The objective of this modulation scheme is to cancel certain harmonics of EMI and to reduce the amplitude of the remaining harmonics. The proposed scheme has been implemented in a field programmable gate array and a four channel parallel buck converter has been used in order to verify it. A significant EMI reduction has been obtained in comparison to use the interleaving and Switching Frequency Modulation separately.
Keywords :
PWM power convertors; electromagnetic interference; field programmable gate arrays; frequency modulation; switching convertors; EMI reduction; conducted electromagnetic interference; field programmable gate array; four channel parallel buck converter; modular power converters; multiconverter topology; switching frequency modulation scheme; Delay; Electromagnetic interference; Frequency modulation; Interleaved codes; Power harmonic filters; Power system harmonics; Switched-mode power supply; Switching converters; Switching frequency; Topology; EMC/EMI; Interleaved Converters; Power supply; Switched-mode power supply;
Conference_Titel :
Power Electronics and Applications, 2009. EPE '09. 13th European Conference on
Conference_Location :
Barcelona
Print_ISBN :
978-1-4244-4432-8
Electronic_ISBN :
978-90-75815-13-9
