High-Inductive Zero-Voltage Commutations within Active-Neutral Point-Clamped Inverters

Conference: PCIM Europe 2018 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
06/05/2018 - 06/07/2018 at Nürnberg, Deutschland

Proceedings: PCIM Europe 2018

Pages: 8Language: englishTyp: PDF

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Kayser, Felix; Fuhrmann, Jan; Hammes, David; Eckel, Hans-Guenter (University of Rostock, Germany)

Improved three-level active neutral point clamped (ANPC) inverters allow an inductance between the upper and the lower half of the inverter. The failure current di/dt during the short is limited. A typical short-circuit detection is able to limit the failure current between both inverter parts. But this protection inductance results in a high-inductive zero-voltage switching of the high-voltage semiconductor. These switching conditions are unusual for high-voltage high-power devices. Within this paper the behavior during switching of the semiconductor is described with the help of measurements on highvoltage IGBTs and device simulations.