Determination of Aerodynamic Losses of Electric Motors

The energy efficiency of machines is nowadays an intensively studied problem. the induction motor dominantly influenced by rotor’s and stator winding’s temperature. main goal research presented in this paper to develop a methodology based on Computational Fluid Dynamics (CFD) analysis internal external aerodynamics, which necessary for optimisation cooling motors. In paper, theoretical, as well numerical study aerodynamics motor, described verified experimental measurements. CFD-based study, Reynolds-averaged Navier–Stokes (RANS) turbulence modelling approach was applied flow field simulations inside outside motor. complexity solved problem increased not only geometric asymmetry but also flow’s asymmetric character caused fan’s rotation cool casing. This increases demand, especially computational resources, it impossible create simplified model incorporating symmetry. volume air velocity between ribs measured study. Comparing results data obtained from measurement, we concluded that CFD are good relationship with measurement analytical approximations. An experimentally validated so-called digital twin, will be future used virtual new designs concerning minimising losses maximising efficiency, respectively.