Dr.-Ing. Andreas Liske
- Assistant Professor
- Group:
Regelung leistungselektronischer Systeme
- Office Hours:
nach Vereinbarung
- Room: 114
CS 11.10 - Phone: +49 721 608-46848
- andreas liske ∂ kit edu
Title | Image | Source | Short Description |
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Measurement of Inverter Induced Current Slopes for Control and Identification Algorithms in Power Electronics and Electrical Drives Applications | Invited Talk at IEEE 7th Southern Power Electronics Conference (SPEC), 05-08th December, 2022, Fiji |
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An Easily Adaptive Current Control Method for DC-DC Converters | Invited Talk at "Wangener Automotive Symposium – Inverter Trends & Technology" |
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Short-Circuit Turn OFF Capability of an Adaptive Open Loop Gate Driver for Insulated Gate Bipolar Transistors | IECON 2020 The 46th Annual Conference of the IEEE Industrial Electronics Society |
This paper analyzes how a previously presentedadaptive open loop gate driver handles fault currents. Whencontrolling insulated gate bipolar transistors (IGBTs), it isessential to ensure safe operation in the whole operating range.Most important, the gate driver must be able to safely turn OFFa unacceptably high current like a short-circuit current. Such afault generates a current of unknown magnitude, which has tobe switched off as safe and slow as possible. A special shutdownmode of the investigated open loop gate driver is presented in thispaper, which makes it possible to safely shut down a fault currentwithout knowing the actual operating point of the IGBT. Basedon measurement results it is shown that all currents, includingdesaturation of the IGBT can be safely turned OFF. |
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Sensitivity analysis of an adaptive open loop gate driver to manufacturing related varying IGBT parameters | |||
Neue Methode zur Bestimmung und Beschreibung der taktfrequenten Stromsteigungen in Drehstromsynchronmaschinen | Dissertation an der Fakultät für Elektrotechnik und Informationstechnik (ETIT) des Karlsruher Instituts für Technologie (KIT) KITopen-ID: 1000121303 DOI: 10.5445/IR/1000121303 |
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Messung der taktfrequenten Stromsteigungen in Stromrichterschaltungen | Vortrag beim ECPE-Cluster-Seminar "Echtzeitanalyse und Leistungsmessung von elektrischen Maschinen und Stromrichtern" |
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Cascaded H-Bridge based Parallel Hybrid Converter — A novel Topology for perfectly sinusoidal high power Voltage Sources | IECON 2019 - 45th Annual Conference of the IEEE Industrial Electronics Society |
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Resource optimal FPGA implementation of a Least-Squares-Estimator for fast and robust online measurement of current slope and absolute value | 2019 21st European Conference on Power Electronics and Applications (EPE '19 ECCE Europe), DOI: 10.23919/EPE.2019.8915548 |
This paper presents an improved Least-Squares-Estimator for the fast, non-recursive online measurement of the first derivative and absolute value of a piecewise linear oversampled current signal. Core topic is the partially online calculation of the pseudoinverse matrix in combination with an optimized small lookup table, minimizing memory requirements significantly. |
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New Gate Driver for online adjustable switching behavior of Insulated Gate Bipolar Transistors (IGBTs) | 2019 21th European Conference on Power Electronics and Applications (EPE'19 ECCE Europe) |
This paper presents a new gate driver concept that allows an online, open-loop adjustment of the switching behavior of power semiconductors during operation. An inductive impedance instead of an ohmic impedance enables the required adjustable gate current and thus the desired gate voltage curve. The driver can individually adapt the switching behavior of the transistor to each individual switching edge. Thus for example the dv/dt and di/dt can be influenced, whereby the EMI behavior, the reverse recovery rate, the occurring overvoltage or the switching losses can also be influenced. The new gate driver was compared to a conventional resistive gate driver and the measurement results clearly show the advantages of the proposed driver concept. |
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Online Parameter Identification of Permanent Magnet Synchronous Machines with Nonlinear Magnetics based on the Inverter Induced Current Slopes and the dq-System Equations | 2019 21th European Conference on Power Electronics and Applications (EPE'19 ECCE Europe) |
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Measurement of Two-Level Inverter Induced Current Slopes at High Switching Frequencies for Control and Identification Algorithms of Electrical Machines | The 2018 International Power Electronics Conference, IPEC'18 ECCE Asia, Niigata, Japan |
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Direct Adaptive Current Control in Space Vector Overmodulation Mode | 2017 IEEE 12th International Conference on Power Electronics and Drive Systems (PEDS), Honolulu, HI, 2017, pp. 715-720. |
In this paper an algorithm is presented how the current slopes of the freewheeling switching states of an VSI- driven 3-phase isotropic synchronous machine can be obtained by only evaluating the measured current slopes during the two applied active switching states. This enables the identification of the freewheeling current slopes in operating conditions where the freewheeling switching states are too short for a direct measurement. Notably, the use of the “Direct Adaptive Current Control” in the overmodulation range is made possible with the proposed technique. |
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Direct Adaptive Current Control - A universal current control scheme for electrical machines | IECON 2014 - 40th Annual Conference on IEEE Industrial Electronics Society |
This paper presents a direct, adaptive and parameter-free current control scheme that is independent of the motor type and doesn’t need any machine parameters. A given setpoint can be reached accurately within one switching cycle. |
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*ARTIKEL* | |||
Analysis and Modeling of the Quasi-Z-Source-Inverter | IECON 2011 - 37th Annual Conference on IEEE Industrial Electronics Society, Melbourne |
This paper presents a dynamic average model of |
title | type | semester | place |
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Control of Power-Electronic Systems | Lecture (V)/Tutorial (Ü) | SS 2024 | 11.10 Engelbert-Arnold-Hörsaal (EAS) |
Vorlesung 432//Stromrichter Steuerungstechnik SRST | Vorlesung | 8C8D1596A76E43C4B3E53463F7B46E61 | |
Vorlesung 529//Schaltungstechnik | lecture | Wintersemester | 8C8D1596A76E43C4B3E53463F7B46E61 |
Vorlesung 736//Workshop Microcontroller | internship | kl. HS ETI, LAbor Zwischengeschoss ETI |