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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Proceedings ArticleDOI
Comparison of not synchronized sawtooth carrier and synchronized triangular carrier phase current control for the VIENNA rectifier I
U. Drofenik,Johann W. Kolar +1 more
TL;DR: A detailed analysis of different current control concepts for a three-phase three-switch three-level boost-type PWM rectifier (VIENNA Rectifier I) with unity power factor is presented in this paper.
Proceedings ArticleDOI
Comparative theoretical and experimental evaluation of bridge leg topologies of a three-phase three-level unity power factor rectifier
J. Minibock,Johann W. Kolar +1 more
TL;DR: In this paper, a theoretical and experimental analysis of the voltage stress on the power semiconductors employed in a bridge leg of a unidirectional three-phase three-level PWM (VIENNA) rectifier is given.
Journal ArticleDOI
The essence of the little box challenge-part A: Key design challenges & solutions
TL;DR: Two promising inverter concepts to tackle the GLBC are selected, including an H-bridge based inverter with DC-link referenced output filter and a DC/|AC| buck-stage with series-connected low-frequency (LF) |AC|/AC unfolder inverter, which are providing key guidelines for the future development of ultra-compact power electronic converters.
Journal ArticleDOI
Modeling and Pareto Optimization of Microfabricated Inductors for Power Supply on Chip
Toke Meyer Andersen,Claudius M. Zingerli,Florian Krismer,Johann W. Kolar,Ningning Wang,Cian O Mathuna +5 more
TL;DR: In this article, the optimal tradeoff between efficiency and power density is identified using the Pareto front, which results from the evaluation of a large number of microfabricated inductors in the design space defined by the application.
Proceedings ArticleDOI
Comparative evaluation of soft-switching concepts for bi-directional buck+boost dc-dc converters
S. Waffler,Johann W. Kolar +1 more
TL;DR: In this paper, the authors investigated the performance of the ARCP, CF-ZVS-M, SAZZ and ZCT-QZVT soft-switching converters, and proposed analytical models that correlate semiconductor, capacitor and inductor losses with the component volume.