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Non‐linear Dynamics of Electrical Machines: A Kind of Electro‐Mechanical Sommerfeld Effect?
Author(s) -
Boy Felix,
Hetzler Hartmut
Publication year - 2018
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201800193
Subject(s) - permeance , rotordynamics , rotor (electric) , torque , dynamics (music) , harmonic , reliability (semiconductor) , mechanics , motion (physics) , physics , classical mechanics , control theory (sociology) , computer science , mechanical engineering , engineering , acoustics , power (physics) , permeation , genetics , control (management) , quantum mechanics , artificial intelligence , membrane , biology , thermodynamics
Electrical machines in modern applications, as for example in electric mobility, are operated at high and rapidly changing rotational speeds. Under such conditions, lateral rotor oscillations due to unbalanced magnetic pull and modified flux linkage may affect the torque and rotational motion and thus the operational reliability. Such a scenario, which shows certain similarities to the SOMMERFELD‐effect in classical rotordynamics, is analysed within this paper using a computationally fast model, based on LAGRANGE‐MAXWELL equations and the permeance harmonic method.