To use the tooth magnetic flux as the working magnetic flux of the DC brushless motor, it is necessary to carry out some quantitative analysis on the tooth magnetic induction intensity, and find out some related quantities and their relationship with the tooth magnetic flux density in order to design the DC brushless motor. Time as the basis for judgment and design analysis. The following analysis of the relationship between the relevant data of the motor magnet, stator and punching sheet and the tooth magnetic flux density, calculates the tooth magnetic flux density of the DC brushless motor, and draws some relevant conclusions.
(1) The punching piece is unchanged, the length is changed, and the tooth magnetic flux density is almost unchanged.
(2) Changing the tooth width, the tooth width is inversely proportional to the tooth magnetic flux density, and the error is small.
(3) The magnetic steel material changes, the tooth magnetic flux density is proportional to the magnetic steel remanence, and the error is within the design coincidence rate.
(4) Under the condition that the tooth magnetic flux density is not saturated, the punching material changes, and the tooth magnetic flux density changes little.
(5) The shape of the punched magnetic steel is scaled up, and the motor magnetic circuit performance, air gap magnetic flux density and tooth magnetic flux density are almost unchanged.
(6) The other shape of the punching film changes, and the tooth magnetic flux density is not very affected.
(7) The shape of the surface-mounted magnetic steel is different, and the tooth magnetic flux density is basically the same as the motor torque constant and the rated operating point.
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