Aperiodic pulse-modulation technique to reduce peak EMI in impedance-source DC-DC converters

Saad Ul Hasan, Yuba Raj Kafle, Graham E. Town

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionpeer-review

1 Citation (Scopus)

Abstract

The use of wide-bandgap (WBG) devices in power converters provides several advantages in terms of efficiency, power density and low cooling requirements. However, a potential unwanted side-effect is the increased electromagnetic interference (EMI) noise, the basis of which is the high di/dt and dv/dt realized by the characteristic sharp rise and fall switching offered by the WBG power switches. To suppress the EMI, this paper presents a generic framework for the generation of an aperiodic carrier signal, which can be extended to drive multiple switched power converters. The aperiodic modulation scheme is implemented in a MATLAB Simulink environment and realized on a field-programmable gate array (FPGA) development board through an auto-code generation feature offered by a hardware description language (HDL) coder. Finally, the efficacy of the proposed aperiodic modulation methodology has been tested on a quasi-Z-source DC-DC converter. A 9 dB suppression in the peak conducted EMI emissions was demonstrated with no adverse impact on the voltage gain and efficiency of the power converter.

Original languageEnglish
Title of host publicationThe ECCE 2017 proceedings
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages5369-5374
Number of pages6
ISBN (Electronic)9781509029983, 9781509029976
ISBN (Print)9781509029990
DOIs
Publication statusPublished - 2017
Event9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017 - Cincinnati, United States
Duration: 1 Oct 20175 Oct 2017

Conference

Conference9th Annual IEEE Energy Conversion Congress and Exposition, ECCE 2017
CountryUnited States
CityCincinnati
Period1/10/175/10/17

Keywords

  • electromagnetic interference (EMI)
  • pulse-width modulation (PWM)
  • pulse-position modulation (PPM)
  • quazi-Zsource (qZS)
  • gallium nitride (GaN)
  • high-electron-mobility transistor (HEMT)
  • wide-bandgap (WBG)

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