Rectifier Design for Frequency Converters using Thyristor or Diode Modules in Parallel Connection
Conference: PCIM Asia 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/26/2019 - 06/28/2019 at Shanghai, China
Proceedings: PCIM Asia 2019
Pages: 7Language: englishTyp: PDF
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Authors:
Wettengel, Stefan; Lindenmueller, Lars; Laessig, Florian; Bernet, Steffen (TU Dresden, Institute of Electrical Power Engineering, Chair of Power Electronics, Dresden, Germany)
Stelte, Michael; Drilling, Christof; Leifeld, Matthias; Schiele, Juergen; Schenk, Mario (Infineon Technologies Bipolar GmbH & Co. KG, Warstein, Germany)
Abstract:
In a previous paper the authors presented a model to calculate the on-state voltage drop of thyristor and diode modules more accurately than with the commonly used linear model. The resulting alphabeta-Model had so far been experimentally validated with single, sinusoidal current half-waves. In this paper, the measurements are extended to a higher number of modules as well as longer time periods – the model is thus further validated. Based on this model, a simulative investigation of thyristor module parallel connection is executed which leads to advice on how to optimize a practical rectifier design for a minimal current sharing mismatch.