EAL, Institut für elektrische Antriebe und Leistungselektronik

Institut für elektrische Antriebe und Leistungselektronik

JKU, Johannes Kepler Universität Linz

Sprache: DE

Publikations Einzelansicht

Magnetic Gear: Radial Force, Cogging Torque, Skewing and Optimization


Autor(en): Gerald Jungmayr, Jens Loeffler, Bjoern Winter, Frank Jeske und Wolfgang Amrhein
Journal: Published in: Energy Conversion Congress and Exposition (ECCE), 2015 IEEE IEEE Explore Digital Library
Jahr: 2015
Buchtitel: ECCE 2015, IEEE Energy Conversion Congress & Expo, Montreal, Canada, Sept. 20 - 24, 2015
Seite(n): 8, 898 - 905
DOI: 10.1109/ECCE.2015.7309783
Zusammenfassung: Magnetic gears are able to transmit torque between an input and an output shaft without mechanical contact. As for electrical drives, torque density, acoustic noise and torque ripple are of primary concern. This paper describes the influence of the pole numbers on the radial forces and the cogging torques. We show how continuous and discrete skewing can suppress torque harmonics effectively. Further, we investigated different simulation modes for magnetic gears using finite-element software. A multi-objective optimization was conducted to find a Pareto-optimal magnetic gear, whose cogging torque was minimized by skewing one rotor. Finally, we present a prototype with a gear ratio of 1:21 and compare finite-element results with the measurements of unskewed and skewed magnetic gears.

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