Potential of passive feedbacks to reduce dynamic current imbalances of paralleled IGBTs

Konferenz: PCIM Europe 2019 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management
07.05.2019 - 09.05.2019 in Nürnberg, Deutschland

Tagungsband: PCIM Europe 2019

Seiten: 8Sprache: EnglischTyp: PDF

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Werner, Robin; Eckel, Hans-Guenter (University of Rostock, Germany)
Weigel, Jan; Boehmer, Juergen (Siemens Mobility GmbH, Germany)

This paper analyses the improvements in dynamic current sharing of paralleled IGBTs that can be achieved by passive feedbacks. During parallel turn-ON and turn-OFF, various asymmetries can lead to current mismatches. To avoid deratings, those mismatches have to be reduced, and passive measures regarding the gate-drive are a cost-efficient way to do so. However, not every passive measure has a reducing influence on current imbalances of every cause. Therefore, this paper investigates which passive measure can reduce which kind of current mismatch.