Analysis of supraharmonic emission in a microgrid in islanded and interconnected operation

Research output: Contribution to book/conference proceedings/anthology/reportConference contributionContributedpeer-review



The increasing penetration of distributed generation in microgrids and the connection of different types of electronic loads cause significant levels of supraharmonic emission, especially in islanded microgrids. In this paper loads with different circuit topologies are connected to a laboratory microgrid, and supraharmonic voltages and currents are analyzed in both interconnected and islanded mode. Different indexes were applied to evaluate the supraharmonic emissions in specific frequency bands. Additional combinations of loads are analyzed for the islanded microgrid with regard to different power contributions from the storage and the PV system are assessed to identify the impact of those elements on supraharmonic emission. Finally, measurements of supraharmonic impedance characteristics were performed to find possible causes of the supraharmonic levels, e.g. resonances.


Original languageEnglish
Title of host publication2022 20th International Conference on Harmonics & Quality of Power (ICHQP)
Number of pages6
ISBN (electronic)978-1-6654-1639-9
ISBN (print)978-1-6654-1640-5
Publication statusPublished - 1 Jun 2022

Publication series

SeriesInternational Conference on Harmonics and Quality of Power


Title2022 20th International Conference on Harmonics & Quality of Power (ICHQP)
Duration29 May - 1 June 2022
LocationNaples, Italy

External IDs

Scopus 85133768699
ORCID /0000-0002-7465-5750/work/142237847



  • Impedance measurement, Nonlinear distortion, Integrated circuit interconnections, Resonant frequency, Microgrids, Robustness, Inverters