Influence of Current Sensing Equipment and DC-Link Capacitor on the Performance of a Low Inductive SiC Switching Cell

Conference: PCIM Europe digital days 2020 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07/07/2020 - 07/08/2020 at Deutschland

Proceedings: PCIM Europe digital days 2020

Pages: 7Language: englishTyp: PDF

Sewergin, Alexander; Delhey, Severin; Buendgen, David; Stippich, Alexander; De Doncker, Rik W. (Institute for Power Electronics and Electrical Drives (ISEA), RWTH Aachen University, Aachen, Germany)

This paper introduces a three-dimensional switching cell design whereby special focus is laid upon a low-inductive current measurement setup which is essential for the calculation of switching losses in a double-pulse configuration. For this purpose, the effects of a conventional coaxial shunt and an optimized Rogowski coil on a low-inductive switching cell are examined. In addition to the influence of a DC-snubber capacitor integrated into the switching cell the influence of an external DC-link capacitor and its inductive connection to the switching cell is investigated.