A double-layer stator modular magnetic motor
A modular, double-layer technology, applied in magnetic circuits, synchronous machines, electric components, etc., can solve the problem of low application of slot full rate, limited range of air-gap magnetic field speed regulation of permanent magnet synchronous motors, and difficult off-line of complex stator structures. and other problems to achieve the effect of easy winding
Active Publication Date: 2021-09-03
NANTONG UNIVERSITY
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Problems solved by technology
[0003] Purpose of the invention: Aiming at the above-mentioned prior art, a double-layer stator modular magnetic motor is proposed, which solves the problems of limited speed regulation range of air-gap magnetic field of permanent magnet synchronous motor and low application of slot full rate, and solves the problem of complex stator structure processing Difficult problems in the middle and lower lines
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[0016] The present invention will be further explained below in conjunction with the accompanying drawings.
[0017] Such as Figure 1 to Figure 3 As shown, a double-layer stator modular magnetic motor includes a double-layer stator unit 1 , a permanent magnet unit 2 , a non-magnetic fixed block 3 , a rotor 4 and a rotating shaft 5 . The double-layer stator unit 1 consists of an upper module 9 comprising a stator yoke 14 and a lower module 10 which together form stator teeth 13 . The double-layer stator units 1 are arranged along the circumference, and stator slots 6 are formed between the stator teeth 13 of adjacent double-layer stator units 1 . The stator slot 6 is separated by the slot wedge 12 into an upper slot 7 with a fan-shaped radial section and a lower slot 8 with a circular-arc wine glass-shaped radial section. This slot type is not only convenient for winding winding, but also can reduce the magnetic density of the outer stator teeth, Avoid overheating problems h...
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The invention discloses a double-layer stator modular magnetic motor, which comprises a double-layer stator unit, a permanent magnet unit, a nonmagnetic fixed block, a rotor and a rotating shaft. The double-layer stator units are arranged along the circumference, and stator slots are formed between the stator teeth of adjacent double-layer stator units. The stator slots are separated by slot wedges into upper slots with fan-shaped radial section and lower slots with arc wine glass shape. This slot type is not only convenient for winding winding, but also can reduce the magnetic density of outer stator teeth and avoid overheating problems during motor operation. . The armature winding is wound in the upper slot, the excitation winding is wound in the lower slot, and the slot wedge is used to fix and separate the upper and lower windings, which can solve the problem of difficult off-line when the slot shape is complex, and the application of the slot full rate is not high. The permanent magnet units and the non-magnetic fixed blocks are arranged alternately along the circumference on the inner surface of the stator. The excitation winding is fed with a DC pulse current to change the magnetization state of the AlNiCo permanent magnet, so that the air gap flux of the motor can be adjusted by charging and demagnetizing the permanent magnet unit.
Description
technical field [0001] The invention relates to a double-layer stator modular magnetic motor, which belongs to the technical field of permanent magnet motors. Background technique [0002] Due to the advantages of high efficiency, high power density, and strong overload capacity, permanent magnet synchronous motors are widely used in aerospace, industrial and agricultural production, and automobiles. However, the traditional permanent magnet synchronous motor has the problem that the air gap magnetic field cannot be adjusted. In order to realize the adjustable air-gap magnetic field, German scholar Vlado Ostovic proposed a "memory motor" that directly changes the magnetization level of the permanent magnet. This special structure can change the air gap magnetic field by repeatedly charging and demagnetizing the permanent magnet online at any time. However, since the permanent magnets are located on the rotor, there is a problem of heat dissipation; and due to the low magne...
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IPC IPC(8): H02K1/16H02K3/12H02K3/28H02K1/27H02K21/02
CPCH02K1/165H02K1/278H02K3/12H02K3/28H02K21/028H02K2201/03
Inventor 张蔚张双双梁惺彦王瑞翟良冠
Owner NANTONG UNIVERSITY