Research needs for harmonic stability analysis of power electronic devices in low voltage networks

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This paper presents some of the research needs to overcome the constraints of different approaches to analyse harmonic instabilities in low voltage (LV) networks. Harmonic instabilities that refer to interactions of the control of power electronic (PE) devices and the network impedance have been observed increasingly in the past due to a growing share of renewable energy generators and other applications that are connected to the LV network via PE devices. Detailed white-box models can be derived if the device parameters are available while measurement-based identification approaches are required to parametrize black-box models. However, both approaches face individual challenges such as the computational effort, restrictions to small signal analysis and unknown system components, e.g. for manufacturers of PE devices the network impedance and for network operators the device specifications. The aim of this study is to present important challenges and constraints of the present methods to analyse harmonic instabilities in LV networks and consequently identify the research needs to overcome these challenges. In addition, measurements are shown to support the argumentation.


Original languageEnglish
Title of host publicationIECON Proceedings (Industrial Electronics Conference)
Publication statusPublished - 13 Oct 2021


Title47th Annual Conference of the IEEE Industrial Electronics Society, IECON 2021
Duration13 - 16 October 2021

External IDs

ORCID /0000-0001-8439-7786/work/142244140
ORCID /0000-0001-5338-7649/work/142255874


Sustainable Development Goals


  • Converters, Inverters, Modelling, Power Electronics, Power Quality