This map shows the geographic impact of Lars Helle'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 Lars Helle with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Lars Helle more than expected).
This network shows the impact of papers produced by Lars Helle. 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 Lars Helle. The network helps show where Lars Helle may publish in the future.
Co-authorship network of co-authors of Lars Helle
This figure shows the co-authorship network connecting the top 25 collaborators of Lars Helle.
A scholar is included among the top collaborators of Lars Helle 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 Lars Helle. Lars Helle is excluded from
the visualization to improve readability, since they are connected to all nodes in the network.
Senturk, Osman S., Lars Helle, Stig Munk‐Nielsen, Remus Teodorescu, & Pedro Rodríguez. (2012). Proceedings of the IEEE Energy Conversion Congress and Exposition (ECCE), 2012.11 indexed citations
Silva, Rodrigo, et al.. (2012). Modular Multilevel Converter Modelling, Control and Analysis under Grid Frequency Deviations. Technical University of Denmark, DTU Orbit (Technical University of Denmark, DTU).1 indexed citations
Teodorescu, Remus, et al.. (2011). DC-link voltage oscillations reduction during unbalanced grid faults for high power wind turbines. European Conference on Power Electronics and Applications. 1–11.1 indexed citations
Senturk, Osman S., Lars Helle, Stig Munk‐Nielsen, Pedro Rodríguez, & Remus Teodorescu. (2009). Medium voltage three-level converters for the grid connection of a multi-MW wind turbine. QRU Quaderns de Recerca en Urbanisme. 1–8.30 indexed citations
Helle, Lars, Gert Karmisholt Andersen, Frede Blaabjerg, & Peter Omand Rasmussen. (1999). An Integrated Single-Phase Power-Factor-Controlled Switched Reluctance Motor Drive. VBN Forskningsportal (Aalborg Universitet). 137–142.3 indexed citations
19.
Andersen, Gert Karmisholt, Lars Helle, & Peter Omand Rasmussen. (1999). An Integrated Single Phase Power Factor Controlled Switched Reluctance Motor Drive with Minimum of Passive Components. VBN Forskningsportal (Aalborg Universitet).2 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.