Abstract
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.
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References
Koch, S.-F., Peter, M., Fleischer, J.: Lightweight design and manufacturing of composites for high-performance electric motors. Procedia CIRP 66, 283–288 (2017)
Schneider, H.: Auswuchttechnik, 8th edn. Springer, Heidelberg (2013)
Brommundt, E., Sachau, D.: Auswuchten starrer Rotoren. In: Brommundt, E., Sachau, D. (eds.) Schwingungslehre mit Maschinendynamik, pp. 35–44. Springer Fachmedien Wiesbaden, Wiesbaden (2014)
DIN Deutsches Institut für Normung e. V., Mechanische Schwingungen – Anforderungen an die Auswuchtgüte von Rotoren in konstantem (starrem) Zustand: Teil 1: Festlegung und Nachprüfung der Unwuchttoleranz, DIN ISO 1940-1, 2003 (2003)
DIN Deutsches Institut für Normung e. V., Mechanische Schwingungen – Auswuchten von Rotoren: Teil 11: Verfahren und Toleranzen für Rotoren mit starrem Verhalten, DIN ISO 21940-11, 2017 (2017)
Deutsches, D.I.N.: Institut für Normung e. V., Mechanische Schwingungen – Auswuchten von Rotoren: Teil 21: Beschreibung und Bewertung von Auswuchtmaschinen. DIN ISO 21940–21, 2013 (2013)
Peter, M.: Unwuchtminimale Montage von Permanentmagnetrotoren durch modellbasierte Online-Optimierung. Dissertation, first edn., Shaker, Karlsruhe
Peter, M.: Unwuchtminimale Rotormontage, Karlsruhe (2016)
Meyer, A., Heyder, A., Kühl, A., Sand, C., Gehb, H., Abersfelder, S., Franke, J., Holzhey, R., Büttner, U., Wangemann, S.: Concept for magnet intra logistics and assembly supporting the improvement of running characteristics of permanent magnet synchronous motors. Procedia CIRP 43, 356–361 (2016)
Simon-Sempere, V., Burgos-Payan, M., Cerquides-Bueno, J.-R.: Influence of manufacturing tolerances on the electromotive force in permanent-magnet motors. IEEE Trans. Magn. 49, 5522–5532 (2013)
Kampker, A.: Elektromobilproduktion. Springer, Heidelberg (2014)
Hofmann, B., Masuch, M., Kummeth, P., Franke, J., Frey, P., Merklein, M.: In-line strategies and methods to reduce balancing efforts within rotor production for electric drives. In: Proceedings/2016 6th International Electric Drives Production Conference (E|DPC), pp. 27–31 (2016)
Meyer, A., Mayr, A., Malygin, N., Zhang, Y., Franke, J.: Selective magnet assembly assisted by an automated warehouse system: algorithms, performance and industry 4.0 readyness. In: Proceedings/2017 7th International Electric Drives Production Conference (E|DPC)
Colledani, M., Coupek, D., Verl, A., Aichele, J., Yemane, A.: A cyber-physical system for quality-oriented assembly of automotive electric motors. CIRP J. Manufact. Sci. Technol. 20, 12–22 (2018)
Ottmann, T., Widmayer, P.: Algorithmen und Datenstrukturen, 6th edn. Springer Vieweg, Heidelberg (2017)
Acknowledgments
The authors would like to thank M. Schiefer and M. Veigel from the Institute of Electrical Engineering (ETI) for providing the rotor design that is used for the latest validation steps. Further thanks are also due to A. Hilligardt and Z. Chen for their support regarding technical design and unbalance measurements.
The article has been written within the “OptiMA” project funded by the Deutsche Forschungsgemeinschaft (DFG).
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Wößner, W., Peter, M., Hofmann, J., Fleischer, J. (2019). Model-Based Assembly Optimization for Unbalance-Minimized Production Automation of Electric Motors. In: Schmitt, R., Schuh, G. (eds) Advances in Production Research. WGP 2018. Springer, Cham. https://doi.org/10.1007/978-3-030-03451-1_54
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DOI: https://doi.org/10.1007/978-3-030-03451-1_54
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