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Dive into the research topics where Fabian Denk is active.

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Featured researches published by Fabian Denk.


international power electronics and motion control conference | 2012

Switching speed-control of an optimized capacitor-clamped normally-on Silicon Carbide JFET cascode

Karsten Haehre; Michael Meisser; Fabian Denk; Rainer Kling; Wolfgang Heering

This paper presents the results of controlling the switching speed (dv/dt) of an optimized version of the capacitor-clamped normally-on Silicon Carbide (SiC) JFET cascode. The cascode circuit is an easy way to employ the normally-on SiC JFET in a normally-off configuration using a low-voltage Silicon (Si) MOSFET in series connection. The traditional cascode circuit exhibits some disadvantages, namely limited control of the switching speed and high frequency oscillations on the drain-source-voltage of the low-voltage Si MOSFET. The optimized capacitor-clamped cascode reduces the oscillations and enables control of the voltage and current slopes as well as implements a protection of the JFET gate. The theoretical background of the capacitor-clamped cascode and the control of voltage slope are explained and investigated experimentally.


european conference on power electronics and applications | 2017

Integrated PFC and series resonant frequency converter analysis and control

Michael Heidinger; Christoph Simon; Fabian Denk; Rainer Kling; Wolfgang Heering

A control algorithm for an integrated power factor correction (PFC) and series resonant converter (SRC) using only two switches is presented, allowing to open loop control the AC input current and the DC output current independently. The theory for this approach is analyzed in time domain and a novel approach for open loop regulation is presented and verified. The software defined power (SDF) control algorithms determines the switching frequency and duty cycle of the converter.


european conference on power electronics and applications | 2016

Investigations of SMPD SiC-MOSFET phase-leg modules for MHz inverters

Fabian Denk; Karsten Hähre; Rainer Kling; Wolfgang Heering

In this work we present results of investigations on the usability of ISOPLUS SMPD SiC-MOSFET phase-leg modules for medium-frequency resonant inverters. These modules combine excellent thermal performance, very low parasitic inductances and good switching performance with the benefits of surface-mountable packages. In the first step, a SPICE and a thermal simulation of a half-bridge inverter using the SMPD module and one using discrete SiC-MOSFETs in TO-247 package was performed. Here, the semiconductor losses of the discrete devices were 2.5 times higher than the one of the SMPD module. In the second step, a modular prototype of a resonant MHz half-bridge inverter with the SMPD module was built. A short circuit test and efficiency measurements with an ohmic load showed an excellent switching performance of the SMPD SiC-MOSFET phase-leg module in the MHZ range. With the inverter prototype, an efficiency of > 95% was measured, at a switching frequency of 2.01 MHz and an output power of 5.6 kW delivered to the load resistor.


Conference proceedings of the 6th IET International Conference on Power Electronics, Machines and Drives (PEMD'12), Bristol, United Kingdom, March 27-29, 2012 | 2012

Characterization and comparison of commercially available silicon carbide (SIC) power switches

Karsten Haehre; Michael Meisser; Fabian Denk; Rainer Kling


Energy technology | 2017

Solar Glasses: A Case Study on Semitransparent Organic Solar Cells for Self-Powered, Smart, Wearable Devices

Dominik Landerer; Daniel Bahro; Holger Röhm; Manuel Koppitz; Adrian Mertens; Felix Manger; Fabian Denk; Michael Heidinger; Thomas Windmann; Alexander Colsmann


PCIM Europe 2015 : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, 19 - 21 May 2015 ; proceedings | 2015

Normally-on SiC-JFET Cascode under ZVS conditions

Karsten Haehre; Thomas Lueth; Fabian Denk; Rainer Kling; Wolfgang Heering


PCIM Europe 2015 : International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nuremberg, 19 - 21 May 2015 ; proceedings | 2015

Minibloc SiC-MOSFET in a resonant half-bridge inverter operating in the MHz-range

Fabian Denk; Karsten Haehre; Rainer Kling; Wolfgang Heering


PCIM Europe: International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, Nürnberg, 16.-18. Mai 2017 | 2017

Constant current paralling controller for mid-power LEDs

Michael Heidinger; Christoph Simon; Fabian Denk; Rainer Kling; Wolfgang Heering


PCIM Europe 2017. International Messe für Leistungselektronik, intelligente Antriebstechnik, erneuerbare Energie und Energiemanagement, Nürnberg, 16.-18. Mai 2017 | 2017

Constant Current Paralleling Controller for Mid-Power LED

Michael Heidinger; Christoph Simon; Fabian Denk; Wolfgang Heering; Rainer Kling


Energy technology | 2017

Cover Feature: Solar Glasses: A Case Study on Semitransparent Organic Solar Cells for Self-Powered, Smart, Wearable Devices (Energy Technol. 11/2017)

Dominik Landerer; Daniel Bahro; Holger Röhm; Manuel Koppitz; Adrian Mertens; Felix Manger; Fabian Denk; Michael Heidinger; Thomas Windmann; Alexander Colsmann

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Rainer Kling

Karlsruhe Institute of Technology

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Wolfgang Heering

Karlsruhe Institute of Technology

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Karsten Haehre

Karlsruhe Institute of Technology

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Michael Heidinger

Karlsruhe Institute of Technology

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Christoph Simon

Karlsruhe Institute of Technology

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Adrian Mertens

Karlsruhe Institute of Technology

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Alexander Colsmann

Karlsruhe Institute of Technology

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Daniel Bahro

Karlsruhe Institute of Technology

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Dominik Landerer

Karlsruhe Institute of Technology

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Felix Manger

Karlsruhe Institute of Technology

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