Johann W. Kolar

According to our database, Johann W. Kolar authored at least 94 papers between 1995 and 2024.

Collaborative distances:

• Dijkstra number of four.
• Erdős number of four.

2024

A Novel Pumping Principle for a Total Artificial Heart.

Tim Bierewirtz, Krishnaraj Narayanaswamy, Rosario Giuffrida, Tim Rese, Dominik Bortis, Daniel Zimpfer, Johann W. Kolar, Ulrich Kertzscher, Marcus Granegger

IEEE Trans. Biomed. Eng., February, 2024

Comparative Evaluation of Three-Phase Three-Level GaN and Seven-Level Si Flying Capacitor Inverters for Integrated Motor Drives Considering Overload Operation.

Gwendolin Rohner, Tino Gfrörer, Pascal S. Niklaus, Dominik Bortis, Mario Schweizer, Johann W. Kolar

IEEE Access, 2024

Wide DC Output Voltage Range Buck-Boost 6-Module Y-Rectifier Featuring Full Power Delivery in 3-Phase and 1-Phase Operation.

David Menzi, Lorenz Kappeler, Patrick Ziegler, Davide Biadene, Johann W. Kolar

IEEE Access, 2024

2023

Analysis and Experimental Verification of the EMI Signature of Three-Phase Three-Level TCM Soft-Switching Converter Systems.

Spasoje Milorad Miric, Pascal S. Niklaus, Jonas E. Huber, Christof Stäger, Michael Haider, Johann W. Kolar

IEEE Access, 2023

Third-Harmonic-Type Modulation Minimizing the DC-Link Energy Storage Requirement of Isolated Phase-Modular Three-Phase PFC Rectifier Systems.

Thomas Langbauer, David Menzi, Valentin Marugg, Franz Vollmaier, Jon Azurza, Matthias Kasper, Johann W. Kolar

IEEE Access, 2023

2022

Novel tubular linear actuator with integrated magnetic bearing.

Spasoje Milorad Miric, Johann W. Kolar, Dominik Bortis

Elektrotech. Informationstechnik, 2022

Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects.

Julian Böhler, Jonas E. Huber, Johann Wurz, Martin Stránský, Nissim Uvaidov, Srdjan Srdic, Johann W. Kolar

IEEE Access, 2022

2021

Dynamic Electromechanical Model and Position Controller Design of a New High-Precision Self-Bearing Linear Actuator.

Spasoje Milorad Miric, Rosario Giuffrida, Dominik Bortis, Johann Walter Kolar

IEEE Trans. Ind. Electron., 2021

CFD Assisted Evaluation of In Vitro Experiments on Bearingless Blood Pumps.

Pascal Puentener, Marcel Schuck, Johann W. Kolar

IEEE Trans. Biomed. Eng., 2021

Modular Multilevel Converter Circulating Current Control with Single Active Filter Module per Phase.

Jonas E. Huber, Johann W. Kolar

Proceedings of the 22nd IEEE International Conference on Industrial Technology, 2021

Design and Characterization of a Bearingless Cross-Flow Fan.

Ivana Bagaric, Daniel Steinert, Florian Wassmer, Thomas Holenstein, Thomas Nussbaumer, Johann W. Kolar

Proceedings of the IEEE/ASME International Conference on Advanced Intelligent Mechatronics, 2021

2020

Experimental Analysis and Optimization of a Contactless Eddy-Current-Based Speed Sensor for Smooth Conductive Surfaces.

Cheng Gong, Arda Tuysuz, Michael Flankl, Tibor Stolz, Johann W. Kolar, Thomas G. Habetler

IEEE Trans. Ind. Electron., 2020

Three-Phase Bidirectional Ultra-Wide Output Voltage Range Current DC-Link AC/DC Buck-Boost Converter.

Daifei Zhang, Mattia Guacci, Johann W. Kolar, Jordi Everts

Proceedings of the 46th Annual Conference of the IEEE Industrial Electronics Society, 2020

2019

Applicability of Solid-State Transformers in Today's and Future Distribution Grids.

Jonas E. Huber, Johann W. Kolar

IEEE Trans. Smart Grid, 2019

A 300 000-r/min Magnetically Levitated Reaction Wheel Demonstrator.

Arda Tuysuz, Timon Achtnich, Christof Zwyssig, Johann W. Kolar

IEEE Trans. Ind. Electron., 2019

Design and Experimental Analysis of a New Magnetically Levitated Tubular Linear Actuator.

Spasoje Milorad Miric, Pascal Kuttel, Arda Tuysuz, Johann W. Kolar

IEEE Trans. Ind. Electron., 2019

Energy Harvesting With Single-Sided Linear Induction Machines Featuring Secondary Conductive Coating.

Michael Flankl, Lucas de Oliveira Baumann, Arda Tuysuz, Johann W. Kolar

IEEE Trans. Ind. Electron., 2019

Scaling and design of miniature high-speed bearingless slice motors.

Marcel Schuck, Pascal Puentener, Thomas Holenstein, Johann W. Kolar

Elektrotech. Informationstechnik, 2019

2017

Low-Jitter GaN E-HEMT Gate Driver With High Common-Mode Voltage Transient Immunity.

Mario Mauerer, Arda Tuysuz, Johann W. Kolar

IEEE Trans. Ind. Electron., 2017

Active Magnetic Damper for Ultrahigh-Speed Permanent-Magnet Machines With Gas Bearings.

Andreas Looser, Arda Tuysuz, Christof Zwyssig, Johann W. Kolar

IEEE Trans. Ind. Electron., 2017

Cogging Torque Shape Optimization of an Integrated Generator for Electromechanical Energy Harvesting.

Michael Flankl, Arda Tuysuz, Johann W. Kolar

IEEE Trans. Ind. Electron., 2017

Behavior of the flying capacitor converter under critical operating conditions.

Panteleimon Papamanolis, Dominik Neumayr, Johann W. Kolar

Proceedings of the 26th IEEE International Symposium on Industrial Electronics, 2017

Planar inverted-F antenna design for a fully implantable mechanical circulatory support system.

Oliver Knecht, Yves Jundt, Johann W. Kolar

Proceedings of the IEEE International Conference on Industrial Technology, 2017

2016

New Position-Sensing Concept for Miniature Lateral-Stator Machines.

Arda Tuysuz, Johann W. Kolar

IEEE Trans. Ind. Electron., 2016

Voltage/current measurement performance and power supply rejection in all-digital Class-D power amplifiers.

Mario Mauerer, Arda Tuysuz, Johann W. Kolar

Proceedings of the IECON 2016, 2016

Weight and efficiency analysis of switched circuit topologies for modular power electronics in MEA.

Christoph Gammeter, Florian Krismer, Johann W. Kolar

Proceedings of the IECON 2016, 2016

Outrunner generator with optimized cogging torque pattern for an electromechanical energy harvester.

Michael Flankl, Arda Tuysuz, Johann W. Kolar

Proceedings of the IECON 2016, 2016

Analysis of capacitive power transfer GaN ISOP multi-cell DC/DC converter systems for single-phase telecom power supply modules.

Michael Antivachis, Matthias Kasper, Dominik Bortis, Johann W. Kolar

Proceedings of the IECON 2016, 2016

2015

20.3 A feedforward controlled on-chip switched-capacitor voltage regulator delivering 10W in 32nm SOI CMOS.

Toke Meyer Andersen, Florian Krismer, Johann Walter Kolar, Thomas Toifl, Christian Menolfi, Lukas Kull, Thomas Morf, Marcel A. Kossel, Matthias Braendli, Pier Andrea Francese

Proceedings of the 2015 IEEE International Solid-State Circuits Conference, 2015

Impact of Transcutaneous Energy Transfer on the electric field and specific absorption rate in the human tissue.

Oliver Knecht, Johann W. Kolar

Proceedings of the IECON 2015, 2015

Protection of MV/LV solid-state transformers in the distribution grid.

Thomas Guillod, Florian Krismer, Raphael Färber, Christian M. Franck, Johann W. Kolar

Proceedings of the IECON 2015, 2015

Analysis and power scaling of a single-sided linear induction machine for energy harvesting.

Michael Flankl, Arda Tuysuz, Johann W. Kolar

Proceedings of the IECON 2015, 2015

2014

A Novel Motor Topology for High-Speed Micro-Machining Applications.

Arda Tuysuz, Christof Zwyssig, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

Slotless Bearingless Disk Drive for High-Speed and High-Purity Applications.

Daniel Steinert, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

An Active Magnetic Damper Concept for Stabilization of Gas Bearings in High-Speed Permanent-Magnet Machines.

Andreas Looser, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

3-D Electromagnetic Modeling of EMI Input Filters.

Ivana F. Kovacevic, Thomas Friedli, Andreas M. Muesing, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

Optimization and Performance Evaluation of an AC-Chopper Ballast for HPS Lamps.

Florian Giezendanner, Jürgen Biela, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

Analysis and Design of a 300-W 500 000-r/min Slotless Self-Bearing Permanent-Magnet Motor.

Thomas Baumgartner, Ralph M. Burkart, Johann W. Kolar

IEEE Trans. Ind. Electron., 2014

4.7 A sub-ns response on-chip switched-capacitor DC-DC voltage regulator delivering 3.7W/mm² at 90% efficiency using deep-trench capacitors in 32nm SOI CMOS.

Toke Meyer Andersen, Florian Krismer, Johann W. Kolar, Thomas Toifl, Christian Menolfi, Lukas Kull, Thomas Morf, Marcel A. Kossel, Matthias Braendli, Peter Buchmann, Pier Andrea Francese

Proceedings of the 2014 IEEE International Conference on Solid-State Circuits Conference, 2014

Weight optimization of a machine for airborne wind turbines.

Christoph Gammeter, Yannick Drapela, Arda Tuysuz, Johann W. Kolar

Proceedings of the IECON 2014 - 40th Annual Conference of the IEEE Industrial Electronics Society, Dallas, TX, USA, October 29, 2014

2013

Automated Design of a High-Power High-Frequency LCC Resonant Converter for Electrostatic Precipitators.

Thiago Batista Soeiro, Jonas Mühlethaler, Jorgen Linner, Per Ranstad, Johann W. Kolar

IEEE Trans. Ind. Electron., 2013

Analysis of High-Efficiency Three-Phase Two- and Three-Level Unidirectional Hybrid Rectifiers.

Thiago Batista Soeiro, Johann W. Kolar

IEEE Trans. Ind. Electron., 2013

The New High-Efficiency Hybrid Neutral-Point-Clamped Converter.

Thiago Batista Soeiro, Johann W. Kolar

IEEE Trans. Ind. Electron., 2013

Comparative Evaluation of Advanced Three-Phase Three-Level Inverter/Converter Topologies Against Two-Level Systems.

Mario Schweizer, Thomas Friedli, Johann W. Kolar

IEEE Trans. Ind. Electron., 2013

Technological Issues and Industrial Application of Matrix Converters: A Review.

Lee Empringham, Johann W. Kolar, José R. Rodríguez, Pat Wheeler, Jon C. Clare

IEEE Trans. Ind. Electron., 2013

New modulation and control scheme for phase-modular isolated matrix-type three-phase AC/DC converter.

Patricio Cortes, Jonas E. Huber, Marcelo Silva, Johann W. Kolar

Proceedings of the IECON 2013, 2013

2012

50-N·m/2500-W Bearingless Motor for High-Purity Pharmaceutical Mixing.

Bernhard Warberger, Remo Kaelin, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2012

Novel Hybrid Modulation Schemes Significantly Extending the Reactive Power Control Range of All Matrix Converter Topologies With Low Computational Effort.

Frank Schafmeister, Johann W. Kolar

IEEE Trans. Ind. Electron., 2012

A Review of Control and Modulation Methods for Matrix Converters.

José R. Rodríguez, Marco Rivera, Johann W. Kolar, Patrick W. Wheeler

IEEE Trans. Ind. Electron., 2012

Bearingless 300-W PMSM for Bioreactor Mixing.

Thomas Reichert, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2012

Efficiency-Optimized High-Current Dual Active Bridge Converter for Automotive Applications.

Florian Krismer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2012

A Three-Phase Delta Switch Rectifier for Use in Modern Aircraft.

Michael Hartmann, Johann Miniböck, Hans Ertl, Johann W. Kolar

IEEE Trans. Ind. Electron., 2012

Comparative Evaluation of Three-Phase AC-AC Matrix Converter and Voltage DC-Link Back-to-Back Converter Systems.

Thomas Friedli, Johann W. Kolar, José R. Rodríguez, Patrick W. Wheeler

IEEE Trans. Ind. Electron., 2012

Comparative evaluation of bidirectional buck-type PFC converter systems for interfacing residential DC distribution systems to the smart grid.

Mircea-Florian Vancu, Thiago Batista Soeiro, Jonas Mühlethaler, Johann Walter Kolar, D. Aggeler

Proceedings of the 38th Annual Conference on IEEE Industrial Electronics Society, 2012

Soft-switching techniques for medium-voltage isolated bidirectional DC/DC converters in solid state transformers.

Gabriel Ortiz, Dominik Bortis, Johann Walter Kolar, Oscar Apeldoorn

Proceedings of the 38th Annual Conference on IEEE Industrial Electronics Society, 2012

Optimal design of EMI filters for single-phase boost PFC circuits.

Jonas Mühlethaler, Hirofumi Uemura, Johann W. Kolar

Proceedings of the 38th Annual Conference on IEEE Industrial Electronics Society, 2012

The η-α-Pareto front of inductive power transfer coils.

Roman Bosshard, Jonas Mühlethaler, Johann W. Kolar, Ivica Stevanovic

Proceedings of the 38th Annual Conference on IEEE Industrial Electronics Society, 2012

Analysis and design of an ultra-high-speed slotless self-bearing permanent-magnet motor.

Thomas Baumgartner, Ralph M. Burkart, Johann W. Kolar

Proceedings of the 38th Annual Conference on IEEE Industrial Electronics Society, 2012

2011

Half-Controlled Boost Rectifier for Low-Power High-Speed Permanent-Magnet Generators.

Daniel Krähenbühl, Christof Zwyssig, Johann W. Kolar

IEEE Trans. Ind. Electron., 2011

Review of Three-Phase PWM AC-AC Converter Topologies.

Johann W. Kolar, Thomas Friedli, José R. Rodríguez, Patrick W. Wheeler

IEEE Trans. Ind. Electron., 2011

The Three-Phase Common-Mode Inductor: Modeling and Design Issues.

Marcelo Lobo Heldwein, Luca Dalessandro, Johann W. Kolar

IEEE Trans. Ind. Electron., 2011

SiC versus Si - Evaluation of Potentials for Performance Improvement of Inverter and DC-DC Converter Systems by SiC Power Semiconductors.

Jürgen Biela, Mario Schweizer, Stefan Waffler, Johann W. Kolar

IEEE Trans. Ind. Electron., 2011

Comparison of Voltage-Source Inverter Topologies for Two-Phase Bearingless Slice Motors.

Martin T. Bartholet, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2011

Optimization of a 5-kW Telecom Phase-Shift DC-DC Converter With Magnetically Integrated Current Doubler.

Uwe Badstuebner, Jürgen Biela, Daniel Christen, Johann W. Kolar

IEEE Trans. Ind. Electron., 2011

2010

Guideline for a Simplified Differential-Mode EMI Filter Design.

Klaus Raggl, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2010

Accurate Power Loss Model Derivation of a High-Current Dual Active Bridge Converter for an Automotive Application.

Florian Krismer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2010

Acceleration-Performance Optimization for Motors With Large Air Gaps.

Philipp Karutz, Thomas Nussbaumer, Wolfgang Gruber, Johann W. Kolar

IEEE Trans. Ind. Electron., 2010

Implementation of a Transformerless Common-Mode Active Filter for Offline Converter Systems.

Marcelo Lobo Heldwein, Hans Ertl, Jürgen Biela, Johann W. Kolar

IEEE Trans. Ind. Electron., 2010

2009

Robust Angle-Sensorless Control of a PMSM Bearingless Pump.

Klaus Raggl, Bernhard Warberger, Thomas Nussbaumer, Simon Burger, Johann W. Kolar

IEEE Trans. Ind. Electron., 2009

Comprehensive Design and Optimization of a High-Power-Density Single-Phase Boost PFC.

Klaus Raggl, Thomas Nussbaumer, Gregor Doerig, Jürgen Biela, Johann W. Kolar

IEEE Trans. Ind. Electron., 2009

Design Guidelines for Interleaved Single-Phase Boost PFC Circuits.

Thomas Nussbaumer, Klaus Raggl, Johann W. Kolar

IEEE Trans. Ind. Electron., 2009

Novel Three-Phase CM/DM Conducted Emission Separator.

Marcelo Lobo Heldwein, Jürgen Biela, Hans Ertl, Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2009

Predictive Control of an Indirect Matrix Converter.

Pablo Correa, José R. Rodríguez, Marco Rivera, José R. Espinoza, Johann W. Kolar

IEEE Trans. Ind. Electron., 2009

2008

An Ultrahigh-Speed, Low Power Electrical Drive System.

Christof Zwyssig, Simon D. Round, Johann W. Kolar

IEEE Trans. Ind. Electron., 2008

Comparison of Prediction Techniques to Compensate Time Delays Caused by Digital Control of a Three-Phase Buck-Type PWM Rectifier System.

Thomas Nussbaumer, Marcelo Lobo Heldwein, Guanghai Gong, Simon D. Round, Johann W. Kolar

IEEE Trans. Ind. Electron., 2008

Novel Tracking Power Supply for Linear Power Amplifiers.

Guanghai Gong, Hans Ertl, Johann W. Kolar

IEEE Trans. Ind. Electron., 2008

Exact Analysis of Three-Phase Rectifiers With Constant Voltage Loads.

Predrag V. Pejovic, Johann W. Kolar

IEEE Trans. Circuits Syst. II Express Briefs, 2008

Design and Analysis of a New Drive-Integrated Auxiliary Dc-Dc Converter for Hybrid Vehicles.

Hanna Magdalena Plesko, Jürgen Biela, Johann Walter Kolar

Proceedings of the Industry Applications Society Annual Meeting, 2008

Design and Performance of a 200 kHz All-SiC JFET Current Source Converter.

Thomas Friedli, Simon D. Round, Dominik Hassler, Johann W. Kolar

Proceedings of the Industry Applications Society Annual Meeting, 2008

2007

Comparison of 3-Phase Wide Output Voltage Range PWM Rectifiers.

Thomas Nussbaumer, Johann W. Kolar

IEEE Trans. Ind. Electron., 2007

Parallel Connection of Two Three-Phase Three-Switch Buck-Type Unity-Power-Factor Rectifier Systems With DC-Link Current Balancing.

Martina Baumann, Johann W. Kolar

IEEE Trans. Ind. Electron., 2007

Efficiency Optimization of a 100-W, 500 000-rpm Permanent-Magnet Machine Including Air Friction Losses.

Jorma Luomi, Christof Zwyssig, Andreas Looser, Johann W. Kolar

Proceedings of the Conference Record of the 2007 IEEE Industry Applications Conference Forty-Second IAS Annual Meeting, 2007

2006

Differential Mode Input Filter Design for a Three-Phase Buck-Type PWM Rectifier Based on Modeling of the EMC Test Receiver.

Thomas Nussbaumer, Marcelo Lobo Heldwein, Johann W. Kolar

IEEE Trans. Ind. Electron., 2006

2005

Novel concept for mains voltage proportional input current shaping of a VIENNA rectifier eliminating controller multipliers.

Johann Miniböck, Johann W. Kolar

IEEE Trans. Ind. Electron., 2005

Comparative evaluation of three-phase high-power-factor AC-DC converter concepts for application in future More Electric Aircraft.

Guanghai Gong, Marcelo Lobo Heldwein, Uwe Drofenik, Johann Miniböck, Kazuaki Mino, Johann W. Kolar

IEEE Trans. Ind. Electron., 2005

A constant output current three-phase diode bridge rectifier employing a novel "Electronic Smoothing Inductor".

Hans Ertl, Johann W. Kolar

IEEE Trans. Ind. Electron., 2005

A novel control concept for reliable operation of a three-phase three-switch buck-type unity-power-factor rectifier with integrated boost output stage under heavily unbalanced mains condition.

Martina Baumann, Johann W. Kolar

IEEE Trans. Ind. Electron., 2005

2002

A novel multicell DC-AC converter for applications in renewable energy systems.

Hans Ertl, Johann W. Kolar, Franz C. Zach

IEEE Trans. Ind. Electron., 2002

Analysis of a multilevel multicell switch-mode power amplifier employing the "flying-battery" concept.

Hans Ertl, Johann W. Kolar, Franz C. Zach

IEEE Trans. Ind. Electron., 2002

1999

VIENNA rectifier II-a novel single-stage high-frequency isolated three-phase PWM rectifier system.

Johann W. Kolar, Uwe Drofenik, Franz C. Zach

IEEE Trans. Ind. Electron., 1999

1998

How to include the dependency of the R_DS(on) of power MOSFETs on the instantaneous value of the drain current into the calculation of the conduction losses of high-frequency three-phase PWM inverters.

Johann Walter Kolar, Hans Ertl, Franz C. Zach

IEEE Trans. Ind. Electron., 1998

1997

A novel three-phase utility interface minimizing line current harmonics of high-power telecommunications rectifier modules.

Johann W. Kolar, Franz C. Zach

IEEE Trans. Ind. Electron., 1997

Basic considerations and topologies of switched-mode assisted linear power amplifiers.

Hans Ertl, Johann Walter Kolar, Franz C. Zach

IEEE Trans. Ind. Electron., 1997

1995

A Novel Three-phase Three-Switch Three-Level Unity Power factor Boost-Type PWM Rectifier.

Johann W. Kolar, Franz C. Zach

J. Circuits Syst. Comput., 1995