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

Kasun Peiris, Sean Elphick and Duane Robinson ()
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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

Energies, 2025, vol. 18, issue 11, 1-23

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.

Keywords: power quality; harmonic; solar PV system; rooftop solar; high-frequency harmonics; supraharmonic (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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