Fractional-slot SPMSM magnetic pole structure optimization design method for reducing unbalanced magnetic pull
A technology of magnetic pole structure and optimized design, applied in the shape/pattern/structure of magnetic circuit, synchronous motor with stationary armature and rotating magnet, magnetic circuit, etc. Time and other issues, to achieve the effect of reducing unbalanced magnetic pull and torque fluctuation, improving stability, and improving the ability to resist error interference
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[0040] Taking a 48p / 54s motor as an example below, the embodiment of the present invention will be described in detail. The parameters of the motor are shown in Table 1.
[0041] Table 1 Fraction slot SPMSM parameters
[0042]
[0043]
[0044] (1) The initial magnetic poles of the fractional slot SPMSM adopt the equal-thickness magnetic pole structure with 90° parallel magnetization, such as figure 1 shown;
[0045] (2) put forward if figure 2 The improvement scheme of the motor magnetic pole shown, that is, the unequal thick magnetic pole structure with the magnetization direction changed;
[0046] (3) To reduce the torque fluctuation and unbalanced magnetic pull of the motor as the optimization goal, the Taguchi method is selected as the method for the optimal design of the fractional slot SPMSM magnetic pole structure, and the selection of optimization variables is as follows image 3 Shown:
[0047] A-the polar arc coefficient of the original equal-thickness ma...
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