End Winding Protections Improvements Helping To Downsize dV/dt Filter For Medium Voltage Machine Fed By NPP Multi-Levels VSI Drive

Yin, Weijun; Durantay, Lionel; Zhang, Lili; Haq, Saeed Ul; Vannay, Francois

doi:10.1109/icd.2018.8470213

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Dv/Dt Filtering Techniques for Electric Drives: Review and Challenges

Pastura

Nuzzo

Kohler

et al. 2019

IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society

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The use of wide band gap devices in power converters is becoming more and more popular since they enable operations at higher switching frequencies, voltages and temperatures compared to traditional power semiconductors, while also improving the efficiency. However, in electric drives, they also tend to increase voltage overshoots at motor terminals and to produce uneven voltage distributions across stator windings, due to their high rate of voltage change over time (dv/dt). In order to mitigate these issues, passive filters can be employed. The aim of this paper is to give an overview of possible solutions based on passive filters, analyzing the main advantages and drawbacks. A comprehensive, qualitative comparative study is carried out taking into account common mode currents reduction, power losses, costs, dimensions and reliability.

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