Combination of Forward-Voltage Measurement and Short-Circuit Detection for High-Voltage RC-IGBTs
Conference: PCIM Europe 2017 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
05/16/2017 - 05/18/2017 at Nürnberg, Deutschland
Proceedings: PCIM Europe 2017
Pages: 6Language: englishTyp: PDF
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Authors:
Muenster, Patrick; Lexow, Daniel; Cordt, Dennis; Eckel, Hans-Guenter (University of Rostock, Germany)
Abstract:
One possibility to determine the collector-current direction of high-voltage IGBTs is the forward-voltage measurement via the high-voltage desaturation (HV DESAT) method. In this paper the blocking capacitance of the DESAT diodes is used to detect short-circuits, without impairing the ability of the forward-voltage measurement. The presented detection is able to distinguish between short circuits, like low- and high-inductive type 1 as well as type 2 and switching transients during normal turn-ON.