Angular-based modeling of unbalanced magnetic pull for analyzing the dynamical behavior of a 3-phase induction motor

A multiphysics asynchronous electric machine model based on the angular approach is developed in this paper by adding interaction between Unbalanced Magnetic Pull and rotor center radial displacements to reinforce electro-magneto-mechanic fields couplings. The novelty of proposed lies also calculating instantaneous speed shaft therefore tackling problems non-stationary operating conditions. This force generated from magnetic field distortion mainly due eccentricity. shifted geometric coordinates are introduced calculate effective air gap length case with Permeance Network Method adopted describe distribution electromagnetic achieved applying virtual work method. validated quasi-static regime comparing reference data traditional numerical without input physical characteristics about its frequency components investigated domain interpret transfer path different angularly-periodic variation induction machine. impact eccentricity amplitude dynamic behavior analyzed at points.