On the Measurement of Power Electronic Devices' Frequency Coupling Admittance

Among the different methods present in the relevant literature to model power electronic devices for harmonic emission studies, frequency domain models based on the experimental evaluation of frequency coupling matrices are considered. This paper analyses the impact of the accuracy of experimental set up on the evaluation of frequency coupling admittance matrix of power electronic devices. An automated test system aimed to perform several experimental tests for the direct measurement of the frequency coupling admittance matrix is designed and implemented and its metrological characterization is performed. Experimental results are described highlighting the main measurement issues that have to be faced during such kind of experimental activities.