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DNL Ming Yang lab testDNV GL has announced a MW-level wind turbine power converter input-impedance measurement carried out in an independent lab with the commercial partner Ming Yang Smart Energy, Zhongshan, China. A current perturbation measurement setup is prototyped in the DNV GL Flex Power Grid Lab (FPGL) to measure the input-impedance of a MW-level wind turbine power converter and verify the harmonic impedance model that is essential for the management of harmonic resonance risks, especially in the practice of offshore wind farm grid integration.
 
The benefit of the current perturbation method is its scalability to meet the growing size of Device-Under-Test (e.g. wind turbine generator, PV generator etc). The demonstration took place in context of the EU research project PROMOTioN in Arnhem, the Netherlands. The PROMOTioN (Progress on Meshed HVDC Offshore Transmission Networks) project aims to tackle technical, regulatory, financial and legal challenges to the implementation of offshore meshed HVDC transmission networks.
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