Modeling and Simulation of Brushless DC Motor Considering Magnetic Saturation

In this paper, the modeling and simulation of a brushless DC motor including magnetic saturation, with the use of a saturation factor, is presented. Hypotheses related to the behavior of the dispersed magnetic flux, the flux in the air gap and the reluctance of the magnetic material are discussed and adopted. The methodology for calculating the saturation factor and the stages in which the simulation of the model was carried out are presented. The simulation of the model is carried out for five different alternatives of permanent magnets materials (N30SH, N38SH, N40UH, N52 and Y30). The obtained results are compared with those available in the Simulink block.