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M.Sc. Wilken Wößner

Akad. Mitarbeiter
Bereich: Maschinen, Anlagen und Prozessautomatisierung
Sprechstunden: nach Vereinbarung
Raum: 132, Geb. 50.36
Tel.: +49 1523 9502631
Wilken WoessnerPuq6∂kit edu

76131 Karlsruhe
Kaiserstraße 12

M.Sc. Wilken Wößner

Forschungs- und Arbeitsgebiete:

  • Elektromaschinenbau







seit 10/2017 Wissenschaftlicher Mitarbeiter am Institut für Produktionstechnik (wbk) des Karlsruher Instituts für Technologie (KIT) 
10/2015 - 09/2017 Studium des Maschinenbaus (M.Sc.) am Karlsruher Institut für Technologie (KIT)
10/2011 - 09/2015 Studium des Maschinenbaus (B.Sc.) am Karlsruher Institut für Technologie (KIT)



[ 1 ] Wößner, W.; Stoll, J. .; Oliveira Flammer, M.; Wurster, P.; Peter, M. & Fleischer, J. (2018), „Intelligent Rotor Assembly Enabling Positive Balancing Concepts for High-Performance Permanent Magnet Rotors“. 2018 8th International Electric Drives Production Conference (EDPC), Hrsg. IEEE, S. 207-212.
The increasing electrification of vehicles poses new challenges to the automotive industry. Especially in highperformance applications, the drive system is designed for high rotational speeds, best dynamic behaviour and optimal power-to-weight ratio. However, most rotor designs for drivetrain application are commonly designed for negative balancing. In that case, balancing discs are used to enable the subtraction of a small amount of mass, thus balancing the rotor. The excessive mass of the balancing discs must cover all production deviations and leads to massive balancing discs with a weight ratio of up to 10 % for the overall rotor system. In order to reduce the weight and the installation space for permanent magnet rotors, this article presents an approach that allows to avoid excessive masses by using a rotor components arrangement with minimized unbalance followed by a positive balancing process. In preliminary investigations, the initial rotor unbalance occurring in a state-of-the-art assembly process was therefore significantly reduced by using an optimized selective assembly. Based on researched state-of-the-art positive balancing concepts, new positive balancing concepts are systematically developed, tested and evaluated for applicability in high-performing motors. It shows that the required balancing quality in high-performance applications (usually
[ 2 ] Wößner, W.; Peter, M.; Hofmann, J. & Fleischer, J. (2019), „Model-based assembly optimization for unbalance-minimized production automation of electric motors“. Advances in Production Research, Hrsg. Schmitt, R. & Schuh, G., S. 551-562.
Existing electric motors of higher power are optimized for driving stationary systems and are therefore generally too heavy, too large and too expensive for use in vehicles. New production processes are needed to ensure the cost efficient production of light-weight electric drives. This article presents an approach to reduce the rotor mass of permanently excited synchronous motors (PSM) by using a model-based optimized assembly procedure for rotor components. It aims to create savings in weight and winnings in dynamics by omitting the use of balancing discs that are usually needed to store mass for a costly balancing process. Investigations on two separate rotor designs are carried out to analyse whether the required balancing grade can be reached through an optimized assembly of the rotor components. For the first rotor design, an analysis of the unbalance state of all main rotor components (shaft, rotor discs and magnets) was carried out in order to validate the prediction of the resulting unbalance of the complete rotor. Improvement measures regarding the description of measuring and assembly deviations are listed and put into practice for the preparation of new investigations with a rotor design that sets higher demands to the desired residual rotor unbalance.