The difference between the tile and the straight plate is that the tile can improve the efficiency of the motor at high speed. Because the magnetizing surface of  Ferrite magnet ferrite magnetic steel is always straight, it cannot achieve the efficiency of the magnetic shoe under the condition of ensuring the air gap is unchanged. The electric vehicle motors all use silicon steel stator. The higher the working frequency, the greater the iron loss, and the magnetic shoe can solve this problem. At the same speed, the working frequency of the silicon steel sheet will also be reduced, and the iron loss will be relatively reduced, The other differences are negligible. Usually, high-power motors choose more magnetic pads.