An FPGA-based aperiodic modulation strategy for EMI suppression in quasi-Z-source DC-DC converters

Saad Ul Hasan, Graham E. Town

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

    3 Citations (Scopus)

    Abstract

    The adoption of wide-bandgap (WBG) switching devices in switching power converters provides several advantages, such as high power density, compact size and high efficiency, however a potential side-effect is the increased electromagnetic interference (EMI) due to high-speed switching transients. This paper presents an aperiodic modulation technique to suppress EMI in H-bridge based switched-mode power converters. A generic framework for the generation of an aperiodic carrier signal is demonstrated which can be extended and flexibly applied in other power converters. The aperiodic modulation strategy is programmed in a MATLAB Simulink environment and implemented using a field-programmable gate array (FPGA). The efficacy of the proposed aperiodic modulation was tested on a quasi-Z-source DC-DC converter, and a 10 dB suppression in the peak conducted EMI emissions was demonstrated.

    Original languageEnglish
    Title of host publicationIEEE International Symposium on Circuits and Systems (ISCAS) 2017 : proceedings
    Subtitle of host publicationFrom Dreams to Innovation
    Place of PublicationPiscataway, NJ
    PublisherInstitute of Electrical and Electronics Engineers (IEEE)
    Pages1-4
    Number of pages4
    ISBN (Electronic)9781467368520
    DOIs
    Publication statusPublished - 25 Sep 2017
    Event50th IEEE International Symposium on Circuits and Systems, ISCAS 2017 - Baltimore, United States
    Duration: 28 May 201731 May 2017

    Conference

    Conference50th IEEE International Symposium on Circuits and Systems, ISCAS 2017
    CountryUnited States
    CityBaltimore
    Period28/05/1731/05/17

    Keywords

    • DC-DC Converters
    • electromagnetic compatibility
    • electromagnetic interference
    • spread spectrum
    • wide-bandgap (WBG)

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