The accuracy of the dU/dt filter simulation model should be analysed with measurement data from a prototype filter. One also needs to keep in mind that all of the measurements done for this thesis were made with a scaled-down test setup. The validity of the results and the applicability of the proposed filter design methods should be confirmed with measurements on a full-scale wind power generator. With the inclusion of common-mode calculations, the results in [30] could be validated. More thorough analysis should also be performed on the power losses in both of the filters to determine the combined effect of the filter components.
The effect of different filter core materials should also be studied when considering the losses in a dU/dt filter. Measuring prototype dU/dt filters with different core materials would also make it possible to create more accurate simulation models and design procedures for these filters.
Another important research topic would be to find out how to make the system as cost effective as possible in the long run. In addition to the initial capital required for purchasing and installing the devices, materials and components, the long-term maintenance expenses and the financial losses caused by the power losses in the filters should be taken into account.
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