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2005

Application of SiC-JFETs in current source inverter topologies

Koch, I., Hinrichsen, F., & Canders, W.-R. (2005). Application of SiC-JFETs in current source inverter topologies. In 2005 European Conference on Power Electronics and Applications (S. 7 pp.-P.7). Dresden, Germany. http://doi.org/10.1109/EPE.2005.219542

Abstract

SiC-JFETs are promising for many future applications but have a normally-on behaviour, which usually necessitates an auxiliary MOSFET to achieve self-blocking capability. However this characteristic is predestinated to current source inverter topologies as an attractive alternative for fast switching applications. The paper presents practical investigations o SiC-JFETs with a modified driver stage in a current source inverter and for comparison in a voltage source inverter topology. Measurement results of both topologies at a frequency of 250 kHz are included. Furthermore differences in the minimising of switching losses for each topology are shown.
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2005

Conference Paper

I. Koch

Frank Hinrichsen

W.-R. Canders

Inverters

Silicon carbide

Switches

Circuit topology

MOSFET circuits

Voltage

Power electronics

Diodes

Switching loss

Semiconductor materials

SiC-device

JFET

current source inverter (CSI)

silicon carbide

device application
"Nonequilibrium dynamics in scalar hybrid models"

Baacke, J. ", & Heinen, A. (2005). "Nonequilibrium dynamics in scalar hybrid models". In "6th International Conference on Strong and Electroweak Matter" (S. 281–285). http://doi.org/"10.1142/9789812702159_0039"
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2005

Conference Paper

Jurgen Baacke

Andreas Heinen
A Prototype for Translating XQuery Expressions into XSLT Stylesheets

Klein, N., Groppe, S., Böttcher, S., & Gruenwald, L. (2005). A Prototype for Translating XQuery Expressions into XSLT Stylesheets. In J. Eder, H.-M. Haav, A. Kalja, & J. Penjam (Hrsg.), ADBIS (Bd. 3631, S. 238–253). Springer.
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Klein, Niklas
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2005

Conference Paper

Niklas Klein

Sven Groppe

Stefan Böttcher

Le Gruenwald

Johann Eder

Hele-Mai Haav

Ahto Kalja

Jaan Penjam

comtec itegpub niklas.klein nkleinpub

2004

Searches for squarks with H1 at HERA

Vest, A. (2004). Searches for squarks with H1 at HERA. In 12th International Workshop on Deep Inelastic Scattering (DIS 2004).
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Vest, Anja
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2004

Conference Paper

Anja Vest

Teilchenphysik

DESY

H1 Collaboration
Current source IGBT-inverter for low inductive synchronous machines

Hinrichsen, F., Koch, I., & Canders, W.-R. (2004). Current source IGBT-inverter for low inductive synchronous machines. In 2004 IEEE 35th Annual Power Electronics Specialists Conference (IEEE Cat. No.04CH37551) (Bd. 4, S. 2849–2853). Aachen, Germany . http://doi.org/10.1109/PESC.2004.1355285

Abstract

Synchronous machines with air-gap permanent magnet excitation are advantageous in many modern applications. As a result of the construction principle the stator inductivities are often very low. Therefore, common voltage source inverters with sinusoidal output currents are not automatically the best supply solution for these machines. Either load reactors have to be used to smooth the output current or the high du/dt-rates of faster switches produce EMI problems and overvoltages at the machine windings. Investigations have shown that sine-wave machine currents are not the most effective way to feed these drives. This paper presents a novel way to overcome these problems by using a current source IGBT-inverter. The investigated system consists of a pulse-rectifier, a DC-current-link and an inverter with an output capacitor bank to decouple the stator currents from the DC-link. A simple, modular inverter construction is proposed. It makes no use of snubbers and is scalable over a wide power range. Practical experiments to prove the feasibility have been carried out with positive results.
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2004

Conference Paper

Frank Hinrichsen

I. Koch

W.-R. Canders

Insulated gate bipolar transistors

Synchronous machines

Inverters

Stators

Air gaps

Permanent magnets

Low voltage

Inductors

Switches

Electromagnetic interference
Searching for Deadlocks While Debugging Concurrent Haskell Programs

Christiansen, J., & Huch, F. (2004). Searching for Deadlocks While Debugging Concurrent Haskell Programs. In Proceedings of the Ninth ACM SIGPLAN International Conference on Functional Programming (S. 28–39). ACM. http://doi.org/10.1145/1016850.1016858
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Christiansen, Jan

Fachbereich

Fachbereich 3: Information und Kommunikation
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2004

Conference Paper

Jan Christiansen

Frank Huch

concurrent haskell

deadlock

debugging

detecting deadlocks

2002

The Future of Compressed Air Energy Storage: High Efficiency and Power Output with Reliable Turbine Technology

Tuschy, I., Althaus, R., Gerdes, R., & Keller-Sornig, P. (2002). The Future of Compressed Air Energy Storage: High Efficiency and Power Output with Reliable Turbine Technology. In G. Tsatsaronis (Hrsg.), ECOS 2002 15th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems: Proceedings (Bd. 2). Berlin: Technische Universität Berlin, Institute for Energy Engineering.
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Tuschy, Ilja
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2002

Conference Paper

Ilja Tuschy

Rolf Althaus

Ralf Gerdes

Peter Keller-Sornig

George Tsatsaronis
CAES with High Efficiency and Power Output

Tuschy, I., Althaus, R., Gerdes, R., & Keller-Sornig, P. (2002). CAES with High Efficiency and Power Output. In Energiespeicher (Bd. 1734). Düsseldorf: VDI-Verlag.
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Tuschy, Ilja
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2002

Conference Paper

Ilja Tuschy

Rolf Althaus

Ralf Gerdes

Peter Keller-Sornig
Simple Design and Control of ARCP-Inverter for Universal Power Range

Tareilus, G., Hinrichsen, F., & Canders, W.-R. (2002). Simple Design and Control of ARCP-Inverter for Universal Power Range. In SPEEDAM 2002, International Symposium on Power Electronics, Electrical Drives, Automation and Motion (S. 5). Ravello, Italy.

Abstract

This paper illustrates the development of an ARCPI with a simple, fully digital control which works on the basis of pre-calculated switching time values stored in a look-up table of a PLD. Although the load current is the only measured input value of the control system there is no need for special driver-stages with a zero-voltage detection possibility. The PLD-control can be easily adjusted to cope with different input parameters and therefore it can be used in full power range without hardware changes. The paper presents the calculation models for the values of the resonant components and the switching times and compares the theoretical results whith the measurements carried out on two different test-setups in the mid and high power range.
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2002

Conference Paper

Günter Tareilus

Frank Hinrichsen

W.-R. Canders

1999

Multibrennstoffkonzepte zur Nutzung von Biomassen und Reststoffen zur Krafterzeugung

Tuschy, I., Dittmann, A., & Franke, U. (1999). Multibrennstoffkonzepte zur Nutzung von Biomassen und Reststoffen zur Krafterzeugung. In Entwicklungslinien in der Energie- und Kraftwerkstechnik (Bd. 1457). Düsseldorf: VDI-Verlag.
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Tuschy, Ilja
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1999

Conference Paper

Ilja Tuschy

Achim Dittmann

Ulrich Franke

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