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Characterising Non-Intentional Supraharmonic Emissions from Inverters in Power Grids: Review and Challenges

Author

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  • Kasun Peiris

    (Australian Power Quality Research Centre, University of Wollongong, Wollongong 2522, Australia)

  • Sean Elphick

    (Australian Power Quality Research Centre, University of Wollongong, Wollongong 2522, Australia)

  • Duane Robinson

    (Australian Power Quality Research Centre, University of Wollongong, Wollongong 2522, Australia)

Abstract

Supraharmonic emissions, referred to as voltage/current waveform distortions in the 2–150 kHz range, have been identified as an emerging power quality concern. With the increased number of non-linear devices connected to the power grid, such as photovoltaic inverter systems, supraharmonic disturbances are expected to increase. Despite being a source of supraharmonic emissions, power electronic equipment has become a ubiquitous technology due to recent advancements. Similarly, researchers around the world have started studying these emissions; however, complete systematic knowledge concerning supraharmonic emissions is yet to be achieved. This paper uniquely delves into characterising emissions using existing knowledge, significantly improving the understanding of their complex micro-level interactions and highlighting emerging challenges. The paper presents a comprehensive summary integrating existing studies on supraharmonic emissions in five key areas: emissions, propagation and attenuation, measurement techniques, modelling and simulation, and mitigation.

Suggested Citation

  • Kasun Peiris & Sean Elphick & Duane Robinson, 2025. "Characterising Non-Intentional Supraharmonic Emissions from Inverters in Power Grids: Review and Challenges," Energies, MDPI, vol. 18(11), pages 1-23, June.
    • Handle: RePEc:gam:jeners:v:18:y:2025:i:11:p:2980-:d:1672351
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    References listed on IDEAS

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    1. Kasun Peiris & Sean Elphick & Jason David & Duane Robinson, 2024. "Impact of Multiple Grid-Connected Solar PV Inverters on Harmonics in the High-Frequency Range," Energies, MDPI, vol. 17(11), pages 1-13, May.
    2. Anthoula Menti & Pavlos Pachos & Constantinos S. Psomopoulos, 2025. "Supraharmonic Distortion at the Grid Connection Point of a Network Comprising a Photovoltaic System," Energies, MDPI, vol. 18(3), pages 1-31, January.
    3. Angel Arranz-Gimon & Angel Zorita-Lamadrid & Daniel Morinigo-Sotelo & Oscar Duque-Perez, 2021. "A Review of Total Harmonic Distortion Factors for the Measurement of Harmonic and Interharmonic Pollution in Modern Power Systems," Energies, MDPI, vol. 14(20), pages 1-38, October.
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