Permanent magnet, surface profile design method thereof and motor
A design method and permanent magnet technology, applied in the manufacture of motor generators, design optimization/simulation, electromechanical devices, etc., can solve problems such as excessive torque ripple of permanent magnets, reduce consumption, improve utilization, and reduce vibration noise effect
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Embodiment 1
[0089] Such as figure 2 As shown, the permanent magnet 10 has: a top surface 11 , a base surface 12 , a first side surface 131 , a second side surface 132 , a first transition surface 141 , a second transition surface 142 , a transition plane 15 , a front surface 16 and a rear surface 17 .
[0090] The top surface 11 and the base surface 12 are parallel to each other, and the length of the top surface 11 on the cross section of the permanent magnet 10 is smaller than the length of the bottom surface 12 on the cross section.
[0091] The first side 131 is connected to the top surface 11 via the first transition surface 141 , and the second side 132 is connected to the top surface 11 via the second transition surface 142 .
[0092] The first transitional surface 141 includes a first transitional curved surface 1411 adjacent to the top surface 1 , a second transitional curved surface 1412 adjacent to the first side surface 131 , and a transitional plane 15 between the first tran...
Embodiment 2
[0106] Such as image 3 As shown, the permanent magnet 20 of embodiment 2 is roughly the same as the permanent magnet 10 of embodiment 1, the difference is:
[0107] The transition plane 25 of the permanent magnet 20 in this embodiment is parallel to the imaginary plane 28 .
[0108] The virtual plane 28 is a plane defined by the intersection of the top surface 21 and the first transitional curved surface 2411 and the intersection of the first side 231 and the second transitional curved surface 2412 .
[0109] This embodiment also provides a design method for the surface profile of the permanent magnet 20. By using this design method, the width of the top surface 21, the height of the first side 231, and the preferred value of the setting position of the transition plane 25 can be selected, so as to obtain a better Excellent permanent magnet surface profile.
[0110] The design method includes the following operations:
[0111] Using the setting position of the transition p...
Embodiment 3
[0124] Such as Figure 6 and 7 As shown, the permanent magnet 30 of embodiment 3 is roughly the same as the permanent magnet 10 of embodiment 1, the difference is:
[0125] The transition plane 30 of this embodiment is not parallel to the virtual plane 38;
[0126] The virtual plane 38 is a plane defined by the intersection line between the top surface 31 and the first transitional curved surface 3411 and the intersection line between the first side surface 331 and the second transitional curved surface 3412 .
[0127]This embodiment also provides a design method for the surface profile of the permanent magnet 30 , using this design method, the preferred value of the setting position and inclination angle of the transition plane 35 can be selected, so as to obtain a better surface profile of the permanent magnet.
[0128] The design method is:
[0129] Using the inclination angle of the transition plane 35 relative to the virtual plane 38 as a variable, the simulation softw...
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