Programmed pulsewidth modulated waveforms for electromagnetic interference mitigation in DC-DC converters

Author

Wang, Andrew C. ; Sanders, Seth R.

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

8

Issue

4

fYear

1993

fDate

10/1/1993 12:00:00 AM

Firstpage

596

Lastpage

605

Abstract

The regular switching action of a pulse-width-modulated (PWM) circuit generates conducted and radiated electromagnetic interference (EMI) and may also generate acoustical disturbances. Programmed pulsewidth modulation techniques have been applied using various methods to control harmonics inherent in switched power circuits. A method for generating an optimal programmed switching waveform for a DC-DC converter is presented. This switching waveform is optimized to reduce the amplitude of harmonic peaks in the EMI generated by the converter. Experimental results, a brief discussion of sensitivity, and a practical implementation of a circuit to generate the PWM waveform are given

Keywords

electromagnetic interference; harmonics; interference suppression; power convertors; pulse width modulation; DC-DC converters; EMI; acoustical disturbances; conducted electromagnetic interference; electromagnetic interference mitigation; harmonics control; programmed pulsewidth modulated waveforms; radiated electromagnetic interference; regular switching action; Acoustic pulses; EMP radiation effects; Electromagnetic interference; Electromagnetic scattering; Modulation coding; Pulse circuits; Pulse modulation; Pulse width modulation; Space vector pulse width modulation; Switching circuits;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/63.261032

Filename

261032