05. - 07.06.2018
PCIM Europe 2018
Power Electronics | Intelligent Motion | Renewable Energy | Energy Management


Oral Session

Power Converters


Thursday, 07.06.2018, 14:00 - 15:40 hrs


München 2


Ulrich Kirchenberger, STMicroelectronics, D


14:00 25 kW High Power Resonant Inverter Operating at 2.5 MHz with SiC SMD Phase-Leg Modules
M.Sc. Fabian Denk, Karlsruhe Institute of Technology, Karlsruhe, Deutschland
Nominated for the Best Paper Award
Nominated for the Young Engineer Award

In this work we present investigations on a high power resonant inverter operating at 2.5 MHz with ISOPLUS SMPD SiC-MOSFET phase-leg modules. These modules combine excellent thermal performance with very low parasitic inductances and good high frequency switching performance. A prototype of the full-bridge inverter with the SMPD module was built. With this prototype an efficiency of 95% was measured at a switching frequency of 2.5 MHz and an output power of maximal 25 kW could be delivered to the load resistor.
14:25 A Trans-Linked 5-kW Inverter Using SiC MOSFETs to Achieve Fan-less Operation
Tatsuya Miyazaki, ROHM, Kyoto, Japan
A trans-linked interleaved inverter using SiC metal-oxide-semiconductor field-effect transistors (MOSFETs) achieves a power conversion efficiency of 99% at 5 kW. The trans-linked topology leads to a less required inductance of the smoothing reactor formed by the leakage magnetic flux, and the high-frequency switching of SiC MOSFETs also contributes to reduce the inductance more. Thereby less winding turns is applicable in the reactor, and the consequent copper loss of the rector sufficiently trims the total power loss.
14:50 High power Constant Current Class EF2 GaN Power Amplifier for AirFuel Magnetic Resonance Wire-Less Power Transfer Systems
M.Sc. Tiefeng Shi, GaN Systems, San Jose, USA
This paper presents the constant current Class EF2 power amplifier (PA) for magnetic resonance WPT with GaN devices, where the current output of the Class EF2 PA remains almost constant when the load impedance varies. The solution enables power transfer coil load of the WPT system to simultaneously support multiple devices and naturally supply the power demanded by receiver with open loop. The Class EF2 PA can deliver 200W CW power at 6.78MHz, with 90% efficiency at 60V.
15:15 System Efficiency and Power Density Comparison of Voltage-Source Based DC-Link and Matrix Converters for Highly Integrated Electric Motor Drives
M.Sc. Rüdiger Schwendemann, Karlsruher Inst. für Technologie (KIT) Elektrotechnisches Institut (ETI), Karlsruhe, Deutschland
This paper compares power electronic systems (PES) regarding their suitability for system integration in the housing of variable speed drives. The PES are investigated with respect to the required volume and power losses. The analysis of the PES covers a shaft power from 10 to 40 kW and is done with different semiconductor technologies. Based on the investigation results the best combination of topology and power semiconductor type for each power range and switching frequency can be given.


Speaker detail

Mr. Fabian Denk
M.Sc. Fabian Denk
Karlsruhe Institute of Technology, Karlsruhe, Deutschland
Fabian Denk received the M.Sc. degree in electrical engineering from the Karlsruhe Institute of Technology, Germany, in 2014. He is currently working at the Light Technology Institute of the Karlsruhe Institute of Technology, Germany. His research handle the characterization of silicon carbide power transistors and the development of high power resonant inverters operating in the MHz-range.
Mr. Tatsuya Miyazaki
Tatsuya Miyazaki
ROHM, Kyoto, Japan
Tatsuya Miyazaki received the B. S. and M. S. degrees in meterial science and engineering from Kyoto University, Kyoto, Japan, in 2009 and 2011, respectively. He is with the Research and Development Division, ROHM Company Ltd., Kyoto, Japan. His research interests include high power application.
Mr. Rüdiger Schwendemann
M.Sc. Rüdiger Schwendemann
Karlsruher Inst. für Technologie (KIT) Elektrotechnisches Institut (ETI), Karlsruhe, Deutschland
Higher Education
09/2015 Master-thesis: Prototype Initialization of a SiC-MOSFET-Based Three-Phase Power Converter and Controller Implementation in VHDL
04/2013 - 09/2015 M.Sc. Electrical Engineering and Information Technology, KIT
10/2012 Bachelor-thesis: Optimization of a current source for Laser-Diodes
10/2009 - 09/2012 Bachelor of Engineering, DHBW Stuttgart, Campus Horb
Work Experience
10/2012 - 03/2013 Development Engineer for Power Electronics at Trumpf Laser
Mr. Tiefeng Shi
M.Sc. Tiefeng Shi
GaN Systems, San Jose, USA
More than twenty years of experience leading development of RF high power/high voltage products including devices with different technologies, DC/DC converter, power amplifiers (PAs). His most recent experience is with Intel as RF system design and PA architecture of Wireless Charging. His focus was on Class E and Class EF2 High Power Switch PAs for Wireless Power system capabilities with GaN devices.