Electromagnetic compatibility assessment in multiconverter power systems : conducted interference issues

An assessment of electromagnetic compatibility is important from a technical as well as legal point of view. The harmonized standards should provide detailed guidelines enabling assessment of electromagnetic compatibility for the typical application of devices in systems. This paper presents the specific issues accompanying measurements of conducted electromagnetic interference in multiconverter systems. The theoretical considerations have been confirmed by experimental results obtained in a laboratory and in a real 1 MW photovoltaic power plant. The presented theoretical and experimental results might constitute the recommendations for practitioners dealing with conducted interference measurements, while the proposed approach can be used as a basis for the elaboration of reliable standards for electromagnetic compatibility assessment in multiconverter systems within the scope of the studied interference frequency range.