M.Sc Benedikt Kohlhepp

M.Sc. Benedikt Kohlhepp

Department Elektrotechnik-Elektronik-Informationstechnik (EEI)
Lehrstuhl für Optoelektronik

Raum 01.026
Konrad-Zuse-Strasse 3/5
91052 Erlangen

Telefon: +49 9131 85-28951
Faxnummer: +49 9131 85-27787
E-Mail: benedikt.kohlhepp@fau.de
Webseite: https://www.ote.tf.fau.de/lehrstuhl/mitarbeiter/

Arbeitsgebiet

Elektromagnetische Verträglichkeit von Antriebsumrichtern
Leistungselektronik von Antriebsumrichtern mit schnellschaltenden Halbleitern

Laufende Arbeiten

EMV-Untersuchung eines ZVS-Umrichters mit GaN-Leistungshalbleitern
Untersuchung leitungsgeführter Störungen eines Umrichters mit GaN-HEMTs

Abgeschlossene Arbeiten

Untersuchung eines Modulationsverfahrens zu Reduzierung der Flankensteilheit in Umrichtern
Untersuchung eines aktiven du/dt-Filters für einen GaN-Umrichter
Simulation von Halbbrücken-Kommutierungskreisen auf Leiterplatten mit GaN-Bauelementen
Untersuchung und Modellierung von EMV-Filtern für leistungselektronische Schaltungen
Untersuchung eines 3-Phasen-Umrichters basierend auf Nullspannungsschalten und GaN-Leistugshalbleitern
Untersuchung eines DC-DC-Konverters auf Basis von GaN-HEMTs zur Speisung eines Batteriespeichers aus PV-Anlagen
Untersuchung eines Inverters mit variabler Schaltfrequenz auf Basis von GaN-Leistungshalbleitern
Untersuchung eines ZVS-Umrichters auf Basis von GaN-Leistungshalbleitern
Untersuchungen zur Ansteuerung eines 2-Level Pulswechselrichters mit GaN-Leistungshalbleitern
Untersuchung eines Messaufbaus zur Charakterisierung von induktiven Komponenten auf Basis von Wide-Bandgap-Halbleitern
Untersuchung der asymmetrischen Halbbrücke auf Basis von GaN-Leistungshalbleitern unter Berücksichtigung parasitärer Elemente
Untersuchung einer Hystereseregelung für einen GaN-Umrichter im variabelfrequenten Betrieb
Untersuchung eines 3-phasigen Umrichters mit ZVS

Vorträge

„Herausforderungen beim Einsatz von GaN-Leistungshalbleitern in modernen Umrichtern“ – Cluster Seminar & Workshop, 12.03.2020 in Aschaffenburg
„Messung von Schaltverlusten bei Wide Bandgap Halbleitern – Ein thermischer Ansatz “ – Cluster Online-Seminar “Echtzeitanalyse und Messtechnik in der elektrischen Antriebstechnik sowie in der Leistungselektronik”, 09.03.2021
„Messgeräte unter Störeinfluss“ – Cluster Online-Seminar “Echtzeitanalyse und Messtechnik in der elektrischen Antriebstechnik sowie in der Leistungselektronik”, 10.03.2022
„Loss measurement of magnetic components“ – ECPE Workshop “Design, Technology, Simulation and Application Aspects of Magnetic Components in PE ”, 22.-23.09.2022

Auszeichnungen

EPE Young Author Best Paper Award 2021 für das Paper „Detailed Simulation Model of an Asymmetrical Half-Bridge PWM Converter with Synchronous Rectification including Parasitic Elements”, Benedikt Kohlhepp, Markus Barwig, Thomas Dürbaum and Valentin Zeller, Friedrich-Alexander University, Erlangen-Nürnberg, Germany

Veröffentlichungen

2022

Kohlhepp B., Dobusch J., Kübrich D., Dürbaum T.:
Common Mode of Inverters: Survey and Study of Filter Placement on Grid and Load Side
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2022 (Nuremberg, DEU, 10. Mai 2022 - 12. Mai 2022)
In: PCIM Europe Conference Proceedings 2022
DOI: 10.30420/565822059
Kohlhepp B., Dürbaum T., Heubeck J.:
Non‐ideal behavior of ZVS inverter comprising variable and fixed frequency operation: Analysis, compensation, and verification
In: International Journal of Electrical Power & Energy Systems 2 (2022)
ISSN: 0142-0615
DOI: 10.1016
Kohlhepp B., Faber S., Kaiser J., Dürbaum T.:
Study on Commutation Loop Inductance and Current Distribution to DC-link Capacitors in a GaN Half-bridge
24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe (Hannover, 5. September 2022 - 9. September 2022)
In: 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe 2022
Kohlhepp B., Faber S., Kaiser J., Kübrich D., Dürbaum T.:
Extraction of Parasitic Elements of a Printed Circuit Board applied to a GaN Half-Bridge
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2022 (Nuremberg, DEU, 10. Mai 2022 - 12. Mai 2022)
In: PCIM Europe Conference Proceedings 2022
DOI: 10.30420/565822168
Kohlhepp B., Kübrich D., Dürbaum T.:
GaN-HEMT Based Test Setup for Measurement of Core Losses Under DC-Bias
12th International Conference on Integrated Power Electronics Systems, CIPS 2022 (Berlin, DEU, 15. März 2022 - 17. März 2022)
In: ETG-Fachbericht 2022
Kohlhepp B., Lutsch M., Dürbaum T.:
Three-Phase ZVS Inverter with Variable and Fixed Frequency Operation based on GaN Semiconductors
24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe (Hannover, 5. September 2022 - 9. September 2022)
In: 24th European Conference on Power Electronics and Applications, EPE 2022 ECCE Europe 2022

2021

Dobusch J., Schwanninger R., Kohlhepp B., Dürbaum T.:
How to choose the optimal gan-hemt for a hard switching application – a guide
2021 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2021 (Virtual, Online, 3. Mai 2021 - 7. Mai 2021)
In: PCIM Europe Conference Proceedings 2021
Kohlhepp B., Dürbaum T.:
Modulation Strategy Comprising TCM with Frequency Limit and DPWM for Fast Switching GaN-Inverters
In: 2021 IEEE 8th Workshop on Wide Bandgap Power Devices and Applications (WiPDA) 2021
DOI: 10.1109/WiPDA49284.2021.9645127
Kohlhepp B., Dürbaum T.:
Novel DPWM modulation scheme for three-phase ZVS inverters
56th International Universities Power Engineering Conference, UPEC 2021 (Virtual, Middlesbrough, GBR, 31. August 2021 - 3. September 2021)
In: 2021 56th International Universities Power Engineering Conference: Powering Net Zero Emissions, UPEC 2021 - Proceedings 2021
DOI: 10.1109/UPEC50034.2021.9548210
Kohlhepp B., Förster T., Dürbaum T.:
High frequency ZVS GaN-inverter with adaptive dead time
56th International Universities Power Engineering Conference, UPEC 2021 (Virtual, Middlesbrough, GBR, 31. August 2021 - 3. September 2021)
In: 2021 56th International Universities Power Engineering Conference: Powering Net Zero Emissions, UPEC 2021 - Proceedings 2021
DOI: 10.1109/UPEC50034.2021.9548249
Kohlhepp B., Kübrich D., Dürbaum T.:
Switching Loss Measurement-A Thermal Approach Applied to GaN-Half-Bridge Configuration
23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-85119039332&origin=inward
Kohlhepp B., Kübrich D., Peller S., Dürbaum T.:
Test setup using DC metering approach for loss measurements of inductive components – principle, characterization, validation and application
In: Iet Power Electronics (2021)
ISSN: 1755-4535
DOI: 10.1049/pel2.12155
Kohlhepp B., Kübrich D., Schwanninger R., Dürbaum T.:
Switching loss estimation of gan-hemts by thermal measurement procedure
2021 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2021 (Virtual, Online, 3. Mai 2021 - 7. Mai 2021)
In: PCIM Europe Conference Proceedings 2021
Kohlhepp B., Kübrich D., Tannhaeuser M., Dürbaum T.:
Modulation Method to Reduce Losses in Inverters with LC-Filters
23rd European Conference on Power Electronics and Applications, EPE 2021 ECCE Europe
URL: https://www.scopus.com/record/display.uri?eid=2-s2.0-85116643341&origin=inward
Kohlhepp B., Zeller V., Dürbaum T.:
Full gan asymmetrical half-bridge pwm converter with synchronous rectifier for a high efficient 90 W laptop charger
2021 International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2021 (Virtual, 3. Mai 2021 - 7. Mai 2021)
In: PCIM Europe Conference Proceedings 2021

2020

Kohlhepp B., Barwig M., Kübrich D., Roßmanith H., Dürbaum T.:
Inductor design considerations for overload conditions of lc-filters in high frequency gan-inverters
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2020 (Virtual, Online, 7. Juli 2020 - 8. Juli 2020)
In: PCIM Europe Conference Proceedings 2020
Kohlhepp B., Kuring C., Peller S., Kübrich D.:
Measurement of Dynamic On-State Resistance of High-Voltage GaN-HEMTs under Real Application Conditions
22nd European Conference on Power Electronics and Applications (EPE'20 ECCE Europe) (Lyon, France, 7. September 2020 - 11. September 2020)
DOI: 10.23919/EPE20ECCEEurope43536.2020.9215744
Kohlhepp B., Kübrich D., Dürbaum T.:
Experimental Study of the Coss-Losses Occurring During ZVS Transitions – Emphasis on Low and High Voltage GaN-HEMTs
11th International Conference on Integrated Power Electronics Systems (CIPS 2020) (Berlin, 24. März 2020 - 26. März 2020)
In: VDE (Hrsg.): CIPS 2020 2020
Kohlhepp B., Kübrich D., Tannhaeuser M., Dürbaum T.:
Adaptive dead time in high frequency GaN-Inverters with LC output filter
10th International Conference on Power Electronics, Machines and Drives, PEMD 2020
DOI: 10.1049/icp.2021.0977
Kohlhepp B., Kübrich D., Tannhauser M., Hoffmann A., Dürbaum T.:
Test Setup for Dynamic ON-State Resistance Measurement of High- And Low-Voltage GaN-HEMTs under Hard and Soft Switching Operations
In: IEEE Transactions on Instrumentation and Measurement 69 (2020), S. 7740-7751
ISSN: 0018-9456
DOI: 10.1109/TIM.2020.2985186
Kohlhepp B., Lanvermann T., Dürbaum T.:
Method for compensating the effects of gan-hemts on the output voltage in inverters during dead time
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2020 (Virtual, Online, 7. Juli 2020 - 8. Juli 2020)
In: PCIM Europe Conference Proceedings 2020
Kohlhepp B., Peller S., Kübrich D., Dürbaum T.:
Test Setup for Loss Measurements of Inductive Components by using GaN-HEMTs
21st IEEE Workshop on Control and Modeling for Power Electronics, COMPEL 2020 (Aalborg, 9. November 2020 - 12. November 2020)
In: 2020 IEEE 21st Workshop on Control and Modeling for Power Electronics, COMPEL 2020 2020
DOI: 10.1109/COMPEL49091.2020.9265698
Kohlhepp B., Zeller V., Barwig M., Dürbaum T.:
Detailed Simulation Model of an Asymmetrical Half-Bridge PWM Converter with Synchronous Rectification including Parasitic Elements
22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe (Lyon, 7. September 2020 - 11. September 2020)
In: 2020 22nd European Conference on Power Electronics and Applications, EPE 2020 ECCE Europe 2020
DOI: 10.23919/EPE20ECCEEurope43536.2020.9215674
Stenglein E., Kohlhepp B., Kübrich D., Albach M., Dürbaum T.:
GaN-Half-Bridge for Core Loss Measurements under Rectangular AC Voltage and DC Bias of the Magnetic Flux Density
In: IEEE Transactions on Instrumentation and Measurement 69 (2020), S. 6312-6321
ISSN: 0018-9456
DOI: 10.1109/TIM.2020.2972140
Stenglein E., Kohlhepp B., Kübrich D., Albach M., Dürbaum T.:
Novel gan half-bridge configuration for the measurement of core losses under rectangular voltages and DC-bias
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, PCIM Europe 2020 (Online, 7. Juli 2020 - 8. Juli 2020)
In: PCIM Europe Conference Proceedings 2020
URL: https://ieeexplore.ieee.org/document/9178103

2019

Kohlhepp B., Barwig M., Dürbaum T.:
GaN Improves Efficiency of an Asymmetrical Half-Bridge PWM Converter with Synchronous Rectifier
International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (PCIM 2019) (Nürnberg, 7. Mai 2019 - 9. Mai 2019)
In: VDE (Hrsg.): PCIM Europe 2019; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management 2019
Kohlhepp B., Barwig M., Dürbaum T.:
Influence of the Rectifier's Output Capacitance on the ZVS Transition in Asymmetrical Half-Bridge PWM Converters
10th International Conference on Power Electronics - ECCE Asia, ICPE 2019 - ECCE Asia (Busan, 27. Mai 2019 - 30. Mai 2019)
In: ICPE 2019 - ECCE Asia - 10th International Conference on Power Electronics - ECCE Asia 2019
Kohlhepp B., Kübrich D., Dürbaum T.:
Measuring and Modeling of Dynamic On-State Resistance of GaN-HEMTs
21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe (Genova, 3. September 2019 - 5. September 2019)
In: 2019 21st European Conference on Power Electronics and Applications, EPE 2019 ECCE Europe 2019
DOI: 10.23919/EPE.2019.8915553
Kohlhepp B., Kübrich D., Dürbaum T., Tannhaeuser M., Hoffmann A.:
Measuring of Dynamic On-State Resistance of GaN-HEMTs in Half-Bridge Application under Hard and Soft Switching Operation
IEEE Electrical Power and Energy Conference (EPEC) (Montreal)
In: 2019 IEEE ELECTRICAL POWER AND ENERGY CONFERENCE (EPEC), NEW YORK: 2019

2018

Kohlhepp B., Barwig M., Dürbaum T.:
Efficiency Comparison of an Asymmetrical Half-Bridge PWM Converter with Schottky and Synchronous Rectification
53rd International Universities Power Engineering Conference, UPEC 2018
DOI: 10.1109/UPEC.2018.8542033
Kohlhepp B., Barwig M., Dürbaum T.:
Improving Efficiency of an Asymmetrical Half-Bridge PWM Converter with Synchronous Rectification by a Modified Design Process
10th International Conference and Expositions on Electrical And Power Engineering, EPE 2018
DOI: 10.1109/ICEPE.2018.8559836
Kohlhepp B., Göttle J., Schmidt E., Dürbaum T.:
A Novel Combination of Algorithms for Accelerated Convergence to Steady-State
PCIM Europe 2018 - International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management (Nürnberg, 5. Juni 2018 - 7. Juni 2018)
In: VDE (Hrsg.): PCIM Europe 2018 2018