A “plug and measure” device for junction temperature monitoring in real converter environment

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: 6Sprache: EnglischTyp: PDF

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Kestler, Tobias; Bakran, Mark-M. (University of Bayreuth, Department of Mechatronics, Center of Energy Technology (ZET), Germany)

The dimensioning of power electronic products relies on simulation models, which are based on complex measurements for loss and thermal behaviour. A verification of the calculated allowable output power by measuring the junction temperature Tj in operation is often difficult or impossible and requires specially prepared DUTs. In contrast, the presented device allows Tj determination inside the operating final product. It is inserted between the gate driver and the power semiconductor assembly and measures the temperature sensitive internal gate resistor during either the DUT’s off or on-state. It can be used for IGBTs and (SiC) MOSFETs ranging from TO packages to high current modules with minimal impact.