A novel dithering algorithm to reduce the electro-magnetic interference (EMI) in single phase DC/AC inverters

Ali Elrayyah, K. Namburi, Y. Sozer, I. Husain

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

In this paper, the reduction of the electromagnetic emission interference (EMI) from DC/AC inverters through periodic dithering on the switching frequency of the pulse width modulated (PWM) signal is investigated. The effect of the various parameters involved in the dithering concept are studied which leads to proposing an optimum dithering method to reduce the EMI. The most important parameters involved in dithering are the dithering frequency range, rate of change of the dithering and the phase of the dithering signal. The effect of each of these parameters is studied and the values that give the best reduction are found. Moreover, analytical expressions for the EMI production mechanism are derived to be used for comparison purpose. The theoretical prediction for the dithering scheme that provide the best reduction in the EMI are found to be accurate through both simulation and experimental results.

Original languageEnglish
Title of host publication2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012
Pages652-659
Number of pages8
DOIs
Publication statusPublished - 2012
Externally publishedYes
Event4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012 - Raleigh, NC, United States
Duration: 15 Sep 201220 Sep 2012

Other

Other4th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2012
CountryUnited States
CityRaleigh, NC
Period15/9/1220/9/12

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Keywords

  • DC/AC inverter
  • EMI
  • Periodic dithering
  • PWM

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Fuel Technology

Cite this

Elrayyah, A., Namburi, K., Sozer, Y., & Husain, I. (2012). A novel dithering algorithm to reduce the electro-magnetic interference (EMI) in single phase DC/AC inverters. In 2012 IEEE Energy Conversion Congress and Exposition, ECCE 2012 (pp. 652-659). [6342759] https://doi.org/10.1109/ECCE.2012.6342759