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Arbeitsgebiet

• Elektromagnetische Verträglichkeit von Antriebsumrichtern
• Leistungselektronik von Antriebsumrichtern mit schnellschaltenden Halbleitern

Laufende Arbeiten

• Untersuchung eines Inverters mit variabler Schaltfrequenz auf Basis von GaN-Leistungshalbleitern
• Untersuchung eines ZVS-Umrichters auf Basis von GaN-Leistungshalbleitern

Abgeschlossene Arbeiten

• 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

 

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Veröffentlichungen

B. Kohlhepp (2020) - Vortrag: Herausforderungen beim Einsatz von GaN-Leistungshalbleitern in modernen Umrichtern, Seminar "Echtzeitanalyse und 
Leistungsmessung von elektrischen Maschinen und Stromrichtern", March 2020, Aschaffenburg, Germany

E. Stenglein, B. Kohlhepp, D. Kübrich, M. Albach, T. Dürbaum  (2020) - GaN-Half-Bridge for Core Loss Measurements Under Rectangular AC-Voltage 
and DC-Bias of the Magnetic Flux Density, IEEE Transactions on Instrumentation and Measurement

B. Kohlhepp et al. (2020) - Experimental Study of the Coss-Losses Occurring During ZVS Transitions – Emphasis on Low and High Voltage GaN-HEMTs, 
CIPS 2020 11th Int'l Conference on Integrated Power Electronics Systems, March 2020, Berlin, Germany

B. Kohlhepp et al. (2020) - Test Setup for Dynamic On-State Resistance Measurement of High- and Low-Voltage GaN-HEMTs under Hard and Soft Switching 
Operation, IEEE Transactions on Instrumentation and Measurement

B. Kohlhepp et al. (2019) - Measuring of Dynamic On-State Resistance of GaN-HEMTs in Half-Bridge Application under Hard and Soft Switching Operation, 
2019 IEEE Canada Electrical Power and Energy Conference (EPEC 2019), Oct. 2019, Montreal, Canada

B. Kohlhepp et al. (2019) - Measuring and Modeling of Dynamic On-State Resistance of GaN-HEMTs
21th European Conference on Power Electronics and Applications (EPE’19 ECCE Europe), Sept. 2019, Genua, Italy

B. Kohlhepp et al. (2019) - 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, May 2019, Busan, South Korea

B. Kohlhepp et al. (2019) - GaN Improves Efficiency of an Asymmetrical Half-Bride PWM Converte with Synchronous Rectifier 
PCIM Conference, May 2019, Nuremberg, Germany

B. Kohlhepp et al. (2018) - Improving Efficiency of an Asymmetrical Half-Bridge PWM Converter with Synchronous Rectification by a Modified Design Process
2018 International Conference and Exposition on Electrical And Power Engineering (EPE), October 2018, Iasi, Romania

B. Kohlhepp et al. (2018) - Efficiency Comparison of an Asymmetrical Half-Bridge PWM Converter with Schottky and Synchronous Rectification
International Universities Power Engineering Conference (UPEC), September 2018, Glasgow, Scotland

B. Kohlhepp et al. (2018) - A Novel Combination of Algorithms for Accelerated Convergence to Steady-State
PCIM Conference, June 2018, Nuremberg, Germany