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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Modelling the thermal coupling between internal power semiconductor dies of a water-cooled 3300V/1200A HiPak IGBT module
TL;DR: In this paper, the authors present a thermal model for a 3300V/1200A IGBT module based on numerical simulations and infrared temperature measurements, which includes the mutual thermal coupling of neighboring dies and permits easy integration into a circuit simulator.
Overview and Comparison of Grid Harmonics and Conducted EMI Standards for LV Converters Connected to the MV Distribution System
Ralph M. Burkart,Johann W. Kolar +1 more
TL;DR: Examination of converter modules in non-public low voltage grids connected to the medium voltage distribution system cover the IEEE 519, IEEE 1547, and CISPR 11 standards as well as the technical guideline “Generating Plants Connected to the Medium-Voltage Network” from BDEW.
Proceedings ArticleDOI
Ultra compact three-phase rectifier with electronic smoothing inductor
TL;DR: In this paper, the authors describe the practical realization of an electronic smoothing inductor (ESI) topology, which can reduce the harmonic current level, the output voltage ripple, and the volume of diode bridge rectifiers with a low realization effort.
Journal ArticleDOI
EMI Filter Design for a Three-Phase Buck–Boost Y-Inverter VSD With Unshielded Motor Cables Considering IEC 61800-3 Conducted and Radiated Emission Limits
TL;DR: In this article, a dc input and ac output filter structure allowing operation with unshielded cables is derived for a phase-modular 11-kW buck-boost Y-inverter motor drive system employing 1.2-kV SiC MOSFETs with a switching frequency of 100 kHz.
Proceedings ArticleDOI
A Three-Phase Delta Switch Rectifier for More Electric Aircraft Applications Employing a Novel PWM Current Control Concept
TL;DR: In this paper, a three-phase?-switch rectifier (comprising three?-connected bidirectional switches) is proposed for the PWM current controller, where all three phases are controlled simultaneously.