Effect of frequency modulation on input current of switch-mode power converter

Author

Stepins, Deniss

Author_Institution

Riga Tech. Univ., Riga, Latvia

fYear

2013

fDate

10-13 Nov. 2013

Firstpage

683

Lastpage

688

Abstract

Comprehensive theoretical analysis of the effect of switching frequency modulation (SFM) on input current of DC/DC switch-mode power converters (SMPC) operating in discontinuous conduction mode (DCM) is presented. Theoretical and SIMULINK simulation results are verified experimentally. Peak input and power components currents increase and low-frequency harmonics appear in the input current due to the use of SFM. Some considerations on the right choice of modulation parameters to reduce the negative effects considering also output voltage ripples and electromagnetic interference attenuation are proposed. The analysis performed can be very useful for a design of DC/DC SMPC with SFM in DCM.

Keywords

DC-DC power convertors; electromagnetic interference; frequency modulation; harmonic analysis; switching convertors; DC-DC switch-mode power converter; DCM; SFM; SMPC; discontinuous conduction mode; electromagnetic interference attenuation; low-frequency harmonics; power component; switch-mode power converter; switching frequency modulation; voltage ripple; Electromagnetic interference; Frequency modulation; Harmonic analysis; Pulse width modulation; Switching frequency; Voltage control; DC-DC power converter; electromagnetic interference; frequency modulation; pulse width modulation;

fLanguage

English

Publisher

ieee

Conference_Titel

Industrial Electronics Society, IECON 2013 - 39th Annual Conference of the IEEE

Conference_Location

Vienna

ISSN

1553-572X

Type

conf

DOI

10.1109/IECON.2013.6699217

Filename

6699217