Custom spectral shaping for EMI reduction in high-frequency inverters and ballasts

Author

Johnson, Sandra ; Zane, Regan

Author_Institution

Ball Aerosp. & Technol. Corp., Broomfield, CO, USA

Volume

20

Issue

6

fYear

2005

Firstpage

1499

Lastpage

1505

Abstract

This paper presents the use of frequency modulation (FM) as a spread spectrum technique to reduce electromagnetic interference caused by high-frequency resonant inverters and electronic ballasts. Amplitude modulation (AM) effects due to resonant tank dynamics are counteracted by the use of uniquely shaped modulating waveforms, resulting in the elimination of power spectral density (PSD) distortion and reduced peak currents. Emphasis is placed on shaping the inverter or ballast output current PSD to fit within designated FCC chimneys.

Keywords

amplitude modulation; electromagnetic interference; frequency modulation; lamp accessories; resonant invertors; EMI reduction; amplitude modulation; electromagnetic interference; electronic ballast; frequency modulation; high-frequency resonant inverter; power spectral density distortion; resonant tank dynamics; spectral shaping; spread spectrum technique; Amplitude modulation; Crosstalk; Electromagnetic interference; Electronic ballasts; FCC; Frequency modulation; Hafnium; Resonance; Resonant inverters; Spread spectrum communication; Electromagnetic interference (EMI); electronic ballast; frequency modulation (FM); resonant inverter; spread spectrum;

fLanguage

English

Journal_Title

Power Electronics, IEEE Transactions on

Publisher

ieee

ISSN

0885-8993

Type

jour

DOI

10.1109/TPEL.2005.857565

Filename

1528624