J. W. Kolar

1.6k total citations · 1 hit paper
30 papers, 1.3k citations indexed

About

J. W. Kolar is a scholar working on Electrical and Electronic Engineering, Control and Systems Engineering and Automotive Engineering. According to data from OpenAlex, J. W. Kolar has authored 30 papers receiving a total of 1.3k indexed citations (citations by other indexed papers that have themselves been cited), including 30 papers in Electrical and Electronic Engineering, 9 papers in Control and Systems Engineering and 4 papers in Automotive Engineering. Recurrent topics in J. W. Kolar's work include Multilevel Inverters and Converters (22 papers), Advanced DC-DC Converters (21 papers) and Silicon Carbide Semiconductor Technologies (11 papers). J. W. Kolar is often cited by papers focused on Multilevel Inverters and Converters (22 papers), Advanced DC-DC Converters (21 papers) and Silicon Carbide Semiconductor Technologies (11 papers). J. W. Kolar collaborates with scholars based in Switzerland, Austria and Chile. J. W. Kolar's co-authors include José Rodríguez, Patrick Wheeler, Marco Rivera, S.D. Round, Florian Krismer, L. A. Serpa, Marcelo Lobo Heldwein, H. Ertl, Christof Zwyssig and Franz Zach and has published in prestigious journals such as IEEE Transactions on Industrial Electronics, IEEE Transactions on Power Electronics and Electronics Letters.

In The Last Decade

J. W. Kolar

30 papers receiving 1.3k citations

Hit Papers

A Review of Control and Modulation Methods for Matrix Con... 2011 2026 2016 2021 2011 100 200 300 400
What are hit papers?

Hit papers significantly outperform the citation benchmark for their cohort. A paper qualifies if it has ≥500 total citations, achieves ≥1.5× the top-1% citation threshold for papers in the same subfield and year (this is the minimum needed to enter the top 1%, not the average within it), or reaches the top citation threshold in at least one of its specific research topics.

  1. A Review of Control and Modulation Methods for Matrix Converters
    2011 491 citations José Rodríguez, Marco Rivera et al. IEEE Transactions on Industrial Electronics profile →

Peers — A (Enhanced Table)

Peers by citation overlap · career bar shows stage (early→late) cites · hero ref

Name h Career Trend Papers Cites
J. W. Kolar Switzerland 17 1.3k 480 150 97 35 30 1.3k
Liliana De Lillo United Kingdom 21 1.2k 0.9× 481 1.0× 102 0.7× 90 0.9× 74 2.1× 75 1.3k
Hans Ertl Austria 13 1.1k 0.9× 324 0.7× 80 0.5× 63 0.6× 37 1.1× 33 1.2k
Samir Hazra United States 18 1.3k 1.0× 352 0.7× 91 0.6× 56 0.6× 33 0.9× 40 1.4k
Germán G. Oggier Argentina 14 1.6k 1.3× 540 1.1× 353 2.4× 77 0.8× 34 1.0× 74 1.7k
Kamalesh Hatua India 24 2.1k 1.6× 435 0.9× 102 0.7× 99 1.0× 43 1.2× 125 2.1k
J. Minibock Switzerland 15 1.0k 0.8× 303 0.6× 209 1.4× 65 0.7× 16 0.5× 24 1.1k
Tsuneo Kume Japan 19 1.1k 0.8× 333 0.7× 55 0.4× 88 0.9× 45 1.3× 46 1.1k
O. Apeldoorn Switzerland 16 1.1k 0.8× 188 0.4× 252 1.7× 67 0.7× 30 0.9× 34 1.1k
J. Mahdavi Iran 11 1.0k 0.8× 485 1.0× 134 0.9× 155 1.6× 74 2.1× 28 1.1k
Yongsug Suh South Korea 17 1.2k 0.9× 688 1.4× 144 1.0× 65 0.7× 32 0.9× 92 1.3k

Countries citing papers authored by J. W. Kolar

Since Specialization
Citations

This map shows the geographic impact of J. W. Kolar's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by J. W. Kolar with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites J. W. Kolar more than expected).

Fields of papers citing papers by J. W. Kolar

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by J. W. Kolar. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by J. W. Kolar. The network helps show where J. W. Kolar may publish in the future.

Co-authorship network of co-authors of J. W. Kolar

This figure shows the co-authorship network connecting the top 25 collaborators of J. W. Kolar. A scholar is included among the top collaborators of J. W. Kolar based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with J. W. Kolar. J. W. Kolar is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Rivera, Marco, et al.. (2018). Three-Phase AC-DC Converters with Passive, Active and Hybrid Current Injection Circuits -Part I. Repository@Nottingham (University of Nottingham). 1. 1–7. 3 indexed citations
2.
Knecht, O., Roman Bosshard, J. W. Kolar, & Christoph Starck. (2014). Optimization of Transcutaneous Energy Transfer coils for high power medical applications. 1–10. 26 indexed citations
3.
Cortés, Patricio, J. W. Kolar, & José Rodríguez. (2012). Comparative evaluation of Predictive Control schemes for three-phase buck-type PFC rectifiers. 666–672. 8 indexed citations
4.
Jankovic, Marko V., et al.. (2012). Hybrid three-phase rectifier with switched current injection device. LS3e.2–1. 5 indexed citations
5.
Rodríguez, José, Marco Rivera, J. W. Kolar, & Patrick Wheeler. (2011). A Review of Control and Modulation Methods for Matrix Converters. IEEE Transactions on Industrial Electronics. 59(1). 58–70. 491 indexed citations breakdown →
6.
Bortis, Dominik, S. Waffler, J. Biela, & J. W. Kolar. (2007). 25kW 3-Phase Unity Power Factor Buck Boost Rectifier with Wide Input and Output Range for Pulse Load Applications. 868–868. 2 indexed citations
7.
Zwyssig, Christof, et al.. (2007). Efficiency Optimization of a 100-W, 500 000-rpm Permanent-Magnet Machine Including Air Friction Losses. Conference record. 861–868. 8 indexed citations
8.
Serpa, L. A. & J. W. Kolar. (2007). Virtual-Flux Direct Power Control for Mains Connected Three-Level NPC Inverter Systems. 130–136. 22 indexed citations
9.
Luomi, Jorma, Christof Zwyssig, A. Looser, & J. W. Kolar. (2007). Efficiency Optimization of a 100-W, 500 000-rpm Permanent-Magnet Machine Including Air Friction Losses. Conference record. 861–868. 10 indexed citations
10.
Krismer, Florian, S.D. Round, & J. W. Kolar. (2006). Performance optimization of a high current dual active bridge with a wide operating voltage range. 1–7. 232 indexed citations
11.
Friedli, Thomas, et al.. (2006). A high efficiency indirect matrix converter utifizing RB-IGBTs. 1–7. 43 indexed citations
12.
Zwyssig, Christof, S.D. Round, & J. W. Kolar. (2006). Analytical and Experimental Investigation of a Low Torque, Ultra-High Speed Drive System. Conference record. 3. 1507–1513. 34 indexed citations
13.
Dalessandro, Luca, W.G. Odendaal, & J. W. Kolar. (2005). HF Characterization and Non-Linear Modeling of a Gapped Toroidal Magnetic Structure. 113. 1520–1527. 3 indexed citations
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Kolar, J. W., et al.. (2002). A novel three-phase three-switch three-level high power factor SEPIC-type AC-to-DC converter. 2. 657–665. 26 indexed citations
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Kolar, J. W., H. Ertl, & Franz Zach. (1991). Analysis of on- and off-line optimized predictive current controllers for PWM converter systems. IEEE Transactions on Power Electronics. 6(3). 451–462. 24 indexed citations
20.
Kolar, J. W.. (1989). Calculation of the Passive and Active Component Stress of Three-Phase PWM Converter Systems with High Pulse Rate. Medical Entomology and Zoology. 82 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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