Estimation of an unbalanced grid impedance using a three-phase power converter
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A4 Artikkeli konferenssijulkaisussa
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Date
2020-09-07
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Language
en
Pages
10
Series
Proceedings of the 22nd European Conference on Power Electronics and Applications, EPE’20 ECCE Europe
Abstract
This paper proposes a real-time method for estimating an unbalanced grid impedance using a three-phase converter. In the method, a periodic single-frequency or multi-frequency excitation signal is added to the converter voltage reference. The converter measures currents and voltages at the point of common coupling. The impedance estimate is obtained from the measurements using sliding discrete Fourier transform (SDFT). The method is experimentally validated.Description
Keywords
Converter control, Estimation technique, Impedance measurement, Three-phase system
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Citation
Kukkola, J, Pirsto, V, Routimo, M & Hinkkanen, M 2020, Estimation of an unbalanced grid impedance using a three-phase power converter . in Proceedings of the 22nd European Conference on Power Electronics and Applications, EPE’20 ECCE Europe ., 9215676, European Conference on Power Electronics and Applications, IEEE, European Conference on Power Electronics and Applications, Virtual, Online, 07/09/2020 . https://doi.org/10.23919/EPE20ECCEEurope43536.2020.9215676