Mode-Filtering Analysis Method of Space and Time Harmonic Wave Components of Magnetic Fields in Rotating Machinery

Abstract

We propose a new analysis method of harmonic wave components of magnetic fields in rotating machinery. Using the magnetic permeability obtained by the transient analysis of nonlinear magnetic field, the harmonic wave components of the magnetic field are individually calculated both in the spaces of rotor and stator under the boundary condition that the harmonic wave components obtained by the transient analysis are set on the sliding surface. The mode separation of magnetic field will contribute to the study of reducing the harmful harmonic wave components for the rotating machinery.