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In-situ EMC Measurement and Analysis of a Balcony Photovoltaic System with Microinverter

Balcony photovoltaic systems make an important contribution to decentralized energy generation. At the same time, reports from European market surveillance authorities and recent studies have raised questions regarding the electromagnetic compatibility (EMC) of microinverters. This white paper investigates the EMC characteristics of a balcony PV system under real operating conditions and analyzes interference sources, coupling paths, and potential measures for reducing emissions.

This paper provides an overview of how common-mode and differential-mode currents, magnetic field strengths, and cable routing influence the electromagnetic emissions of balcony photovoltaic systems. In addition, measurements and simulations demonstrate how interference coupling mechanisms can be analyzed and assessed.

Gain valuable insights into assessing EMC risks in photovoltaic systems and effective measures for reducing electromagnetic emissions already during the planning and installation phases.

Chapter overview

  • Introduction
  • Description of the System and Measurement Environment
  • Measurement of Magnetic Field Strength
  • Measurement of Common-Mode and Differential-Mode Currents
  • Development of a System Model
  • Experimental Investigation of the Influence of Cable Routing
  • Results and Summary
  • References

This paper is only available in German.

Author

Prof. Dr.-Ing. Sven Battermann
Hochschule Bielefeld, Campus Minden, Deutschland

Prof. Dr.-Ing. Sven Battermann conducts research and teaches in the field of electromagnetic compatibility, with a focus on the analysis of electromagnetic interference sources and coupling mechanisms in electrical and electronic systems. This white paper was created in collaboration with Mirko Halbe (M. Eng.), Bielefeld University of Applied Sciences.

Download the full paper as a PDF

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Note: The full paper is part of the official EMV 2026 conference proceedings.