Hybrid magnetic circuit low harmonic multi-stator field-weakening extended-speed permanent magnet synchronous motor and method thereof
A permanent magnet synchronous motor, field weakening speed expansion technology, applied in the direction of magnetic circuit, magnetic circuit rotating parts, magnetic circuit static parts, etc., can solve the problem of weakening cogging torque, increasing motor leakage flux, vibration and Noise and other problems, to reduce the radial main magnetic flux, increase the effect of speed regulation range
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Embodiment 1
[0061]As shown in Figure 1(a), the overall three-dimensional schematic diagram of the motor, the number of phases of the motor in this embodiment is 3, the number of radial stator teeth is 24, the number of axial stator teeth is 12, the number of rotor slots is 4, and the number of permanent magnet blocks is 4 , the number of radial magnetic poles is 4, and the number of axial magnetic poles is 4. This embodiment includes a radial stator, an axial stator and a rotor. As shown in Figure 1(b), the radial stator is made of laminated silicon steel sheets. The radial stator includes a radial stator tooth 1, a radial stator yoke 2 and a radial stator slot 3, and a radial armature winding 4 is placed in the radial stator slot 3, and the radial armature winding 4 can be a distributed winding, a concentrated winding or The number of poles of the radial armature winding is the same as the number of radial magnetic poles of the rotor, the radial stator and the rotor are coaxial, and there...
Embodiment 2
[0063] The main difference between embodiment 2 and embodiment 1 is:
[0064] (1) As shown in Figure 2(a), there are axial stators at both ends of the motor in Example 2, and the two ends of the rotor iron core of the motor are all processed into the shape of fan rings to form axial magnetic poles, The rotor is shown in Fig. 2(c), and in Embodiment 1, only one end of the motor has an axial stator, and only one end of the motor rotor iron core is processed into the shape of a fan ring to form an axial magnetic pole;
[0065] The motor in Embodiment 2 has two axial air gaps 10, as shown in Fig. 2(e).
[0066] (2) The arrangement of the permanent magnets in Example 2 is different from that in Example 1. The permanent magnets in Example 1 are in a single parallel structure, while in Example 2 the permanent magnets are in a series-parallel hybrid structure. The rest is the same as that of Example 1, as shown in Figure 2(b) and Figure 2(d).
[0067] Wherein, in the above-mentioned...
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