05 Fakultät Informatik, Elektrotechnik und Informationstechnik

Permanent URI for this collectionhttps://elib.uni-stuttgart.de/handle/11682/6

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Publication Type: search.filters.UBSTyp.KonferenzbeitragAuthor: search.filters.author.Nitzsche, Maximilian

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Now showing 1 - 3 of 3
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    Precise voltage measurement for power electronics with high switching frequencies
    (2018) Nitzsche, Maximilian; Zehelein, Matthias; Tröster, Nathan; Roth-Stielow, Jörg
    In this paper different approaches in precise measurement of gate voltages as well as drain-source voltages of modern SiC and GaN transistors are compared. An approach to calculate the necessary bandwidth of a voltage probe to reproduce the voltage slope is presented. Furthermore, state-of-the-art voltage probes are compared in means of bandwidth, common mode reduction and response on EMI.
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    Comprehensive comparison of a SiC MOSFET and Si IGBT based inverter
    (2019) Nitzsche, Maximilian; Cheshire, Christoph; Fischer, Manuel; Ruthardt, Johannes; Roth-Stielow, Jörg
    The investment which is necessary to replace Si IGBTs with SiC MOSFETs in medium to high power DC-AC inverters needs to be balanced carefully against the advantages SiC offers. This paper compares a 20 kW Si IGBT inverter with a 20 kW SiC MOSFET inverter. The power semiconductor components are operated identically in a modular half bridge module to ensure comparability. Thereby the measurement of the switching losses is explicitly not the focus but the overall efficiency while taking volume, current ripple, switching frequency and inductance into account. The limits of reasonable operating range shall be evaluated and an overview on the benefits of SiC on system level will be given.
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    Power electronic systems for electric aircraft
    (2020) Nitzsche, Maximilian; Roth-Stielow, Jörg
    Electric aviation poses several unique challenges which influence the development of power electronic systems for electric flight. This presentation focuses on the aspects of redundancy, semiconductor material (especially silicon carbide SiC), electromagnetic compatibility and reliability. These topics are discussed in relation to recent developments regarding electric aviation such as e.g. distributed electric propulsion (DEP) and modularity of power electronic systems.