Open AccessModel approach for electromagnetically excited mechanical vibrations in direct-drive wind turbines
Author(s) -
Christoph Mülder,
Tobias Duda,
Georg Jacobs,
Kay Hameyer
Publication year - 2020
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1618/2/022060
Subject(s) - air gap (plumbing) , turbine , finite element method , vibration , physics , electromagnetic field , magnetic field , mechanics , acoustics , field (mathematics) , wind power , mechanical engineering , engineering , electrical engineering , materials science , mathematics , quantum mechanics , pure mathematics , composite material , thermodynamics
In this paper a multi-physical modelling approach for calculating parasitic magnetic force excitations in wind turbine generators is presented. These parasitic excitations are dependent on the magnetic field distribution in the air gap and the air gap geometric shape, which is dependent on the external loads of the wind turbine. With this methodology mechanical multibody simulation is coupled with electromagnetic field calculation by means of finite-element calculation. First the general methodology and the calculation of the air gap width distribution is presented and subsequently the electromagnetic field and force calculation is explained.