J
Johann W. Kolar
Researcher at ETH Zurich
Publications - 1009
Citations - 44219
Johann W. Kolar is an academic researcher from ETH Zurich. The author has contributed to research in topics: Rectifier & Three-phase. The author has an hindex of 97, co-authored 965 publications receiving 36902 citations. Previous affiliations of Johann W. Kolar include Alstom & Infineon Technologies.
Papers
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Journal ArticleDOI
Design of a Highly Efficient (97.7%) and Very Compact (2.2 kW/dm $^3$) Isolated AC–DC Telecom Power Supply Module Based on the Multicell ISOP Converter Approach
TL;DR: A multicell converter approach for a telecom rectifier module breaking through the efficiency and power density barriers of traditional single-cell converter systems is presented in this paper.
Proceedings ArticleDOI
Current handling capability of the neutral point of a three-phase/switch/level boost-type PWM (VIENNA) rectifier
TL;DR: In this paper, the stationary operational behavior of a three-phase/switch/level PWM rectifier is analyzed for asymmetrical loading of the output partial voltages, and the maximum admissible load of the neutral point (capacitive output voltage center point) is calculated.
Ultra-Low-Inductance Power Module for Fast Switching Semiconductors
TL;DR: In this article, an ultra-low-inductance power module using silicon carbide (SiC) devices has been developed by using an advanced packaging technology, which was achieved by using PCB technologies on a DCB substrate to provide more interconnection layers and design freedom.
Proceedings ArticleDOI
A novel hysteresis current control for three-phase three-level PWM rectifiers
TL;DR: A novel hysteresis current control concept for three-phase three-level PWM rectifiers is presented, based on a virtual connection of the output center point and the mains star point and achieves a decoupling of the three phases.
Journal ArticleDOI
Robust Angle-Sensorless Control of a PMSM Bearingless Pump
TL;DR: A new method for a hall-sensorless control of a permanent-magnet synchronous machine bearingless pump in its operating range from 0 to 8000 r/min and from zero load to full load is introduced.