Optimisation of magnetic gears for large wind turbines

Author

Penzkofer, Andreas ; Atallah, Kais

Author_Institution

Dept. of Electron. & Electr. Eng., Univ. of Sheffield, Sheffield, UK

fYear

2015

fDate

10-13 June 2015

Firstpage

962

Lastpage

967

Abstract

An analytical model for the prediction of the magnetic field distribution in the airgaps and permanent magnet (PM) regions of a large radial magnetic gear (MG) is presented. The model is employed for the optimisation of a MG for a large wind turbine. Due to its size, the MG consists of a number of identical circumferential sections, and it is shown, that the number of sections could have a significant effect on the torque transmission capability and the active mass of the MG. It is also shown that design parameters, such as the gear ratio, direction of magnetisation and the pole-arc to pole-pitch ratio of the PMs can have significant effects on the performance of the MG.

Keywords

air gaps; gears; machine insulation; magnetic fields; optimisation; permanent magnets; wind turbines; active mass; airgaps; circumferential sections; gear ratio; large radial magnetic gear; large wind turbines; magnetic field distribution; magnetic gear optimisation; magnetisation direction; permanent magnet regions; pole-arc ratio; pole-pitch ratio; torque transmission capability; Analytical models; Gears; Magnetization; Permeability; Rotors; Stress; Torque; Analytical model; magnetic gear; wind turbine;

fLanguage

English

Publisher

ieee

Conference_Titel

Environment and Electrical Engineering (EEEIC), 2015 IEEE 15th International Conference on

Conference_Location

Rome

Print_ISBN

978-1-4799-7992-9

Type

conf

DOI

10.1109/EEEIC.2015.7165293

Filename

7165293