Reduction of Torque and Radial Force Fluctuation in Permanent Magnet Synchronous Motors by Means of Multi-Objective Optimization
Piepenbreier B, Ley T (2011)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2011
Edited Volumes: 1st International Electric Drives Production Conference 2011, EDPC-2011 - Proceedings
Pages Range: 66-74
Conference Proceedings Title: EDPC 2011
Event location: Nuremberg
ISBN: 978-1-4577-1368-2
DOI: 10.1109/EDPC.2011.6085546
Abstract
This work relates to external rotor type permanent magnet synchronous machines having surface mounted permanent magnets and two-layer non-overlapping windings. A short review of approaches to reduce fluctuation of forces presented in literature is given. As the reduction is associated in most cases with a negative influence on other important design goals, multi-objective optimizations are applied in conjunction with the finite element analysis yielding PARETO-optimal solutions with different preferences. PARETO-optimal solutions regarding the permanent magnet magnetization distribution and the current profiles minimizing the torque fluctuation of a 12-slot 8-pole machine and the higher frequency radial force harmonics in a 12-slot 10-pole machine are presented and discussed. A discrete PARETO-optimal magnetization distribution has been identified which promises a higher fundamental PM flux linkage amplitude compared to radial magnetization, but at a significantly lower cogging torque and torque ripple utilizing the balancing of open circuit voltage harmonics. Furthermore, it is shown that individual current harmonics affect individual radial force harmonics dominantly. A test setup is proposed and the numerically obtained instantaneous torque and the influence of current harmonics on the radial force amplitudes are verified with good agreement. © 2011 IEEE.
Authors with CRIS profile
Bernhard Piepenbreier
Lehrstuhl für Elektrische Energietechnik
Jens Krotsch
Lehrstuhl für Elektrische Energietechnik
Involved external institutions
Germany (DE)How to cite
APA:
Piepenbreier, B., & Ley, T. (2011). Reduction of Torque and Radial Force Fluctuation in Permanent Magnet Synchronous Motors by Means of Multi-Objective Optimization. In EDPC 2011 (pp. 66-74). Nuremberg.
MLA:
Piepenbreier, Bernhard, and Thomas Ley. "Reduction of Torque and Radial Force Fluctuation in Permanent Magnet Synchronous Motors by Means of Multi-Objective Optimization." Proceedings of the 1st International Conference on Electric Drives Production, Nuremberg 2011. 66-74.
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