Design of High-Speed PM Synchronous Motor—Thermal and Mechanical Analyzes Study for Aerospace Retraction Wheel Motor Application

A 3-D modeling of FEA (finite element analysis) design provides for high-speed synchronous with PMs (permanent magnets) applied in aerospace application will be examined under design considerations of n = 12,000 rpm, short-duty operation, and etc. for an ARWM (aerospace retraction wheel motor). First, lumped-elements will be fine-tuned following numerical method results is reported steady-state and transient solutions. Besides, the equations of thermal modeling such as Re, Nu, Gr and Pr numbers in order to calculate heat-transfer coefficient of convection on the rotor and stator surfaces in the air-gap have calculated. This section illustrates the temperature distribution of each point in a clear view. By CFD (fluid dynamic analysis) analysis, the fluid dynamics were modeled, pressure and velocity streamlines of cooling-flow have analyzed. An optimization algorithm was derived in order to have optimized number of water-channels as well. Second, calculation of nodal and tangential forces which deal with mechanical stresses of the ARWM have represented. The paper discusses an accurate magnetic-field analysis that addresses equivalent stress distribution in the magnetic core through using the transient FEA to estimate motor characteristics. The whole model shear and normal mechanical stresses and total
deformation of the ARWM has been investigated by transient FEA. The end-winding effects were included by the authors.