Simplified Procedure to Predict the EM Emissions of Wind Energy Conversion Systems

Abstract

In order to ensure a reliable operation of radio services like radio broadcasting or terrestrial navigation, the electromagnetic emissions of Wind Energy Conversion Systems (WECS) must be taken into account. Due to the enormous metrological effort as well as the dependence on weather conditions, which influences the power level of WECS, the idea of measuring the common-mode current Icm on the power line of WECS and estimating the magnetic field based on this quantity arises. Therefore, the attenuation properties of the most common tower types of WECS are examined in this work. Using the Icm and the attenuation values, a simplified procedure for the prediction of the magnetic field of WECS is presented. The achieved results allow a quick and simplified assessment of the emitted magnetic field of WECS.