Johann W. Kolar - Publications, H-index & Citations

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Johann W. Kolar

swiss federal institute of technology zurich

108H-index

1.0KPaper Count

4.9WCitation Count

Published Papers 247

Publication Date

Next-Generation Solid-State Transformers for Powering Artificial Intelligence Data Centers: A Survey of Emerging Topologies

IEEE Industrial Electronics Magazine

IF4.1

2026-05-11

PREAI

Jonas Huber; Johann W. Kolar

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Experimental Comparison of Three-Phase AC–AC Monolithic Bidirectional GaN Transistor-Based Current DC-Link Converter and GaN Transistor-Based Voltage DC-Link Converter

IEEE Journal of Emerging and Selected Topics in Power Electronics

IF4.9

2025-08-25

PREAI

Neha Nain; Yining Zhang; Stefan Walser; Johann W. Kolar; Jonas Huber

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Novel Bidirectional Three-Switch Single-Stage Single-Phase AC–DC Buck-Boost Converter With Ground-Referenced Output

ieee journal on emerging and selected topics in circuits and systems

IF4.9

2025-06-01

PREAI

Rahel Herzog; David Menzi; Michael Leibl; Luc Imperiali; Jonas Huber; Johann W. Kolar

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Sealless Production Ultracentrifuge and Its Magnetically Self-Bearing Openable Motors for Purification in Viral Nanotechnology

IEEE ACCESS

IF3.6

2025-01-01

OAAI

Hubmann, Emanuel J.; Steinert, Daniel; Nussbaumer, Thomas; Kolar, Johann W.

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Extending the Steinmetz Equation: Incorporating Mechanical Stress Effects in Ferrite Core Loss Calculations

IEEE OPEN JOURNAL OF POWER ELECTRONICS

IF3.9

2025-01-01

OAAI

Schafer, Jannik; Rohner, Gwendolin; Kolar, Johann W.

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Ultralightweight High-Efficiency Buck-Boost DC-DC Converters for Future eVTOL Aircraft With Hybrid Power Supply

IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION

IF8.3

2024-12-01

PREAI

Menzi, David; Imperiali, Luc; Burgisser, Elias; Ulmer, Martin; Huber, Jonas; Kolar, Johann W.

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Analytical Modeling and Comparison of EMI pre-filter Noise Emissions of Three-Phase Voltage and Current DC-Link Converters

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2024-11-01

PREAI

Zhang, Daifei; Leibl, Michael; Muhlethaler, Jonas; Huber, Jonas; Kolar, Johann W.

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A novel three-phase three-port UPS employing a single high-frequency isolation transformer

PESC 04: 2004 IEEE 35TH ANNUAL POWER ELECTRONICS SPECIALISTS CONFERENCE, VOLS 1-6, CONFERENCE PROCEEDINGS

IF0

2024-10-30

109

PREAI

Zhao, CH; Kolar, JW

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Multiobjective Optimization of Rotodynamic Blood Pumps: The Use Case of a Cavopulmonary Assist Device

ASAIO JOURNAL

IF2.3

2024-06-02

PREAI

Escher, Andreas; Miric, Spasoje; Thamsen, Bente; Giuffrida, Rosario; Schmidt, Pascal; Weinhold, Benjamin; Huebler, Michael; Zimpfer, Daniel; Kolar, Johann Walter; Granegger, Marcus

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Optimal Synergetic Operation and Experimental Evaluation of an Ultracompact GaN-Based Three-Phase 10-kW EV Charger

IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION

IF8.3

2024-06-01

PREAI

Li, Yunni; Anderson, Jon Azurza; Haider, Michael; Schafer, Jannik; Minibock, Johann; Huber, Jonas; Deboy, Gerald; Kolar, Johann W.

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Novel Three-Phase Electronic Transformer

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2024-05-01

PREAI

Menzi, David; Yang, Aobo; Chhawchharia, Saransh; Coday, Samantha; Kolar, Johann W.

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Novel Acoustic Failure Prediction Method for Active Magnetic Bearing Systems

IEEE-ASME TRANSACTIONS ON MECHATRONICS

IF7.3

2024-04-01

PREAI

Hubmann, Emanuel J.; Weissofner, Fabian; Steinert, Daniel; Nussbaumer, Thomas; Kolar, Johann W.

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Nonisolated Three-Phase Current DC-Link Buck-Boost EV Charger With Virtual Output Midpoint Grounding and Ground Current Control

IEEE TRANSACTIONS ON TRANSPORTATION ELECTRIFICATION

IF8.3

2024-03-01

PREAI

Zhang, Daifei; Cao, Danqing; Huber, Jonas; Everts, Jordi; Kolar, Johann W.

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

IEEE ACCESS

IF3.6

2024-01-01

OAAI

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

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Linear-Rotary Position Control System With Enhanced Disturbance Rejection for a Novel Total Artificial Heart

IEEE OPEN JOURNAL OF THE INDUSTRIAL ELECTRONICS SOCIETY

IF4.3

2024-01-01

OAAI

Giuffrida, Rosario V.; Horat, Andreas; Bortis, Dominik; Bierewirtz, Tim; Narayanaswamy, Krishnaraj; Granegger, Marcus; Kolar, Johann W.

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

IEEE ACCESS

IF3.6

2024-01-01

OAAI

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

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A Three-Phase Synergetically Controlled BuckBoost Current DC-Link EV Charger

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2023-12-01

PREAI

Zhang, Daifei; Huber, Jonas; Kolar, Johann W.

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ESR Modeling of Class II MLCC Large-Signal-Excitation Losses

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2023-05-01

PREAI

Menzi, David; Ben-Yaakov, Shmuel; Zulauf, Grayson; Kolar, Johann W.

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Three-Phase Synergetically Controlled Current DC-Link AC/DC Buck-Boost Converter With Two Independently Regulated DC Outputs

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2023-04-01

PREAI

Zhang, Daifei; Cao, Danqing; Huber, Jonas; Kolar, Johann W.

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100 kHz Large-Signal Bandwidth GaN-Based 10 kVA Class-D Power Amplifier With 4.8 MHz Switching Frequency

IEEE TRANSACTIONS ON POWER ELECTRONICS

IF6.5

2023-02-01

PREAI

Niklaus, Pascal S.; Kolar, Johann W.; Bortis, Dominik

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Research Directions