CN213717708U - Magnetic flux reversal and switching flux linkage composite permanent magnet motor structure - Google Patents
Magnetic flux reversal and switching flux linkage composite permanent magnet motor structure Download PDFInfo
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- CN213717708U CN213717708U CN202023079748.5U CN202023079748U CN213717708U CN 213717708 U CN213717708 U CN 213717708U CN 202023079748 U CN202023079748 U CN 202023079748U CN 213717708 U CN213717708 U CN 213717708U
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- permanent magnets
- flux linkage
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Abstract
The utility model discloses a compound permanent-magnet machine structure of reverse and switch flux linkage of magnetic flux, include: a stator core; the salient pole type rotor is rotatably arranged in the stator core; the surface-mounted permanent magnet module comprises a plurality of first permanent magnets, and each first permanent magnet is magnetized along the radial direction of the stator core; the built-in permanent magnet module comprises a plurality of second permanent magnets, and each second permanent magnet is magnetized along the tangential direction of the stator core. This compound permanent-magnet machine structure of magnetic flux reversal and switch flux linkage has adopted the principle that the reverse permanent-magnet machine of magnetic flux and the compound permanent-magnet machine of switch flux linkage superpose each other, has improved the electromagnetic properties of motor, has increased the torque density of motor, adopts to inlay on stator core and puts the suppression ring module that has fixed magnetism to shielded the permanent magnet leakage magnetic field on the stator tooth, further promoted the torque density of motor.
Description
Technical Field
The utility model relates to the technical field of electric machines, concretely relates to compound permanent-magnet machine structure of reverse and switch flux linkage of magnetic flux.
Background
In recent years, with the rapid development of rare earth permanent magnet materials and power electronic technology, permanent magnet motors are receiving more and more attention. The stator permanent magnet type synchronous motor breaks through the technical problems of the rotor permanent magnet type synchronous motor in the aspects of topological structure, heat dissipation capability, speed regulation capability and the like in the traditional sense, and becomes a new favorite in the field of servo motors. Different from a common permanent magnet motor, the stator permanent magnet type synchronous motor has the advantages that the permanent magnet is directly arranged on the stator side, the processing difficulty is greatly reduced, the mechanical strength is increased, the permanent magnet is directly contacted with the stator core, the heat can be effectively conducted out, and the thermal redundancy is increased. However, the stator permanent magnet synchronous motor has many disadvantages, and the amplitude of the alternating magnetic flux of the winding link is small, which results in a low back electromotive force induced by the winding, and limits further improvement of the torque density and the power density of the motor.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome above-mentioned technique not enough, provide a magnetic flux is reverse and compound permanent-magnet machine structure of switch flux linkage for the inherent torque density of stator permanent-magnet synchronous machine hangs down technical problem among the solution background art.
In order to achieve the above technical purpose, the technical scheme of the utility model provides a magnetic flux is reverse and compound permanent-magnet machine structure of switch flux linkage is provided, include:
a stator core;
the salient pole type rotor is rotatably arranged in the stator core;
the surface-mounted permanent magnet module comprises a plurality of first permanent magnets, the first permanent magnets are uniformly fixed on the inner circumferential surface of the stator core along the circumferential direction of the stator core, and each first permanent magnet is magnetized along the radial direction of the stator core;
the built-in permanent magnet module comprises a plurality of second permanent magnets, the second permanent magnets are uniformly embedded in the stator teeth of the stator core along the circumferential direction of the stator core, and the second permanent magnets are magnetized along the tangential direction of the stator core.
Further, a plurality of the first permanent magnets are arranged along a circumferential array of the stator core.
Further, a plurality of the second permanent magnets are arranged along a circumferential array of the stator core.
Further, the compound permanent-magnet machine structure of magnetic flux reversal and switch flux linkage still include the suppression ring module, the suppression ring module includes a plurality of third permanent magnets, and is a plurality of the third permanent magnet is followed stator core's circumference is evenly arranged, and is a plurality of third permanent magnet one-to-one is with a plurality of second permanent magnet outer end is adjacent to be arranged, and each the third permanent magnet magnetize the direction rather than adjacent the leakage magnetic line of force direction of second permanent magnet is opposite, the outer end is the second permanent magnet is kept away from the one end in stator core axle center.
Further, each of the third permanent magnets is magnetized along a radial direction of the stator core.
Furthermore, one end of the second permanent magnet, which is close to the third permanent magnet, is provided with an air gap groove adjacent to the third permanent magnet.
Compared with the prior art, the beneficial effects of the utility model include: this compound permanent-magnet machine structure of magnetic flux reversal and switch flux linkage has adopted the principle that the reverse permanent-magnet machine of magnetic flux and the compound permanent-magnet machine of switch flux linkage superpose each other, has improved the electromagnetic properties of motor, has increased the torque density of motor, adopts to inlay on stator core and puts the suppression ring module that has fixed magnetism to shielded the permanent magnet leakage magnetic field on the stator tooth, further promoted the torque density of motor.
Drawings
Fig. 1 is a schematic perspective view of an embodiment of a flux reversal and switching flux linkage composite permanent magnet motor structure provided in the present invention;
fig. 2 is a two-dimensional electromagnetic structure diagram in the magnetic flux reversal and switching flux linkage composite permanent magnet motor structure provided by the utility model.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and fig. 2, the present embodiment provides a flux reversal and switching flux linkage composite permanent magnet motor structure, including: stator core 1, salient pole formula rotor 2, surface-mounted permanent magnet module 3, built-in permanent magnet module 4.
The stator core 1 can be formed by laminating corresponding silicon steel sheets or by pressing SMC soft magnetic materials, the salient pole type rotor 2 can also be formed by laminating silicon steel sheets, a salient pole structure is adopted, the shape of the rotor is regular, machining is convenient, the rotor has a corresponding alternating magnetic field due to a salient pole slotting structure, so that the electromechanical energy exchange between the rotor and the stator is realized, the salient pole type rotor 2 is arranged in the stator core 1 in a rotating mode, the surface-mounted permanent magnet module 3 comprises a plurality of first permanent magnets, the first permanent magnets are uniformly fixed on the inner circumferential surface of the stator core 1 along the circumferential direction of the stator core 1, and the first permanent magnets are magnetized along the radial direction of the stator core 1.
The built-in permanent magnet module 4 comprises a plurality of second permanent magnets, the second permanent magnets are uniformly embedded in the stator teeth of the stator core 1 along the circumferential direction of the stator core 1, and the second permanent magnets are magnetized along the tangential direction of the stator core 1.
This compound permanent-magnet machine structure of magnetic flux reversal and switch flux linkage has adopted the principle that magnetic flux reversal permanent-magnet machine and switch flux linkage permanent-magnet machine superpose each other, has improved the electromagnetic properties of motor, has increased the torque density of motor, and in this embodiment, armature winding 5 inlays on the stator tooth, adopts the three-phase winding structure, when letting in current, can produce the magnetic field at the motor, form the magnetic flux to interact with the magnetic field that the magnet steel produced, produce the torque, and change the direction and the size that current polarity and amplitude can change output torque.
In this embodiment, first permanent magnet is circular-arc, the second permanent magnet is the strip, first permanent magnet, second permanent magnet inlay respectively and put on stator core 1's stator tooth's surface and inside, first permanent magnet, second permanent magnet all can adopt the neodymium iron boron material to make.
Specifically, the plurality of first permanent magnets are arranged along the circumferential array of the stator core 1, and the plurality of second permanent magnets are arranged along the circumferential array of the stator core 1.
In this embodiment, the flux reversal and switching flux linkage compound permanent magnet motor structure further includes a suppression ring module 6, the suppression ring module 6 includes a plurality of third permanent magnets, the plurality of third permanent magnets are uniformly arranged along the circumferential direction of the stator core 1, the plurality of third permanent magnets are arranged adjacent to the outer ends of the plurality of second permanent magnets in a one-to-one correspondence manner, the magnetizing direction of each third permanent magnet is opposite to the magnetic leakage field magnetic line direction of the adjacent second permanent magnet, the outer end is the end of the second permanent magnet far away from the axis of the stator core 1, the third permanent magnet is arc-shaped, the third permanent magnet can be made of neodymium iron boron material or ferrite material, the third permanent magnet is embedded in the circumferential direction on the stator teeth, a radial magnetizing mode is adopted, the magnetizing direction of the third permanent magnet is opposite to the magnetic leakage field direction on the stator teeth, thereby playing a good role in shielding leakage magnetic field and increasing torque density.
One end of the second permanent magnet, which is close to the third permanent magnet, is provided with an air gap slot a adjacent to the third permanent magnet, so that the leakage magnetic field is greatly reduced, and the torque density of the motor is increased.
The surface-mounted permanent magnet module 3 and the built-in permanent magnet module 4 are made of permanent magnet materials, serve as magnetomotive force sources, can stably and continuously generate magnetic fields, and form magnetic fluxes in the motor. The surface-mounted permanent magnet module 3 independently acts with the stator core 1 and the salient pole type rotor 2 to form a magnetic flux reverse permanent magnet motor; the built-in permanent magnet module 4 and the suppression ring module 6 independently act with the stator core 1 and the salient pole type rotor 2 to form a switching flux linkage permanent magnet motor; an excitation magnetic field in the motor is generated by the surface-mounted permanent magnet module 3, the built-in permanent magnet module 4 and the suppression ring module 6 together, and is equal to the superposition of a flux reversal motor and a switch flux linkage motor. The no-load counter-electromotive force, the electromagnetic torque and the electromagnetic power of the motor are equal to the sum of the no-load counter-electromotive force, the electromagnetic torque and the electromagnetic power of the two motors.
The working principle is as follows: the utility model provides a flux reversal and switch flux linkage compound permanent magnet motor structure, which is formed by mutually overlapping a flux reversal motor and a switch flux linkage motor in principle, thereby improving the torque density and the power density of the motor; moreover, the corresponding suppression ring modules 6 are embedded on the stator teeth, the permanent magnets with the magnetic force lines in the opposite directions to the magnetic force lines of the leakage magnetic field are arranged, and the corresponding air gap grooves a are formed in the stator teeth, so that the leakage magnetic field is greatly reduced, and the torque density of the motor is increased; the utility model provides a novel structure of compound permanent-magnet machine of magnetic flux reversal-switch flux linkage has that the magnetic leakage is less, torque density is high, processing is simple advantage, can extensively apply to fields such as servo motor, electric automobile.
The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides a compound permanent-magnet machine structure of magnetic flux reversal and switch flux linkage which characterized in that includes:
a stator core;
the salient pole type rotor is rotatably arranged in the stator core;
the surface-mounted permanent magnet module comprises a plurality of first permanent magnets, the first permanent magnets are uniformly fixed on the inner circumferential surface of the stator core along the circumferential direction of the stator core, and each first permanent magnet is magnetized along the radial direction of the stator core;
the built-in permanent magnet module comprises a plurality of second permanent magnets, the second permanent magnets are uniformly embedded in the stator teeth of the stator core along the circumferential direction of the stator core, and the second permanent magnets are magnetized along the tangential direction of the stator core.
2. The flux reversing and switching flux linkage composite permanent magnet machine structure of claim 1, wherein a plurality of said first permanent magnets are arranged in a circumferential array along said stator core.
3. The flux reversing and switching flux linkage composite permanent magnet machine structure of claim 1, wherein a plurality of said second permanent magnets are arranged in a circumferential array along said stator core.
4. The flux reversal and switching flux linkage compound permanent magnet motor structure according to claim 1, further comprising a suppression ring module, wherein the suppression ring module comprises a plurality of third permanent magnets, the plurality of third permanent magnets are uniformly arranged along the circumferential direction of the stator core, the plurality of third permanent magnets are arranged adjacent to the outer ends of the plurality of second permanent magnets in a one-to-one correspondence manner, the magnetizing direction of each third permanent magnet is opposite to the leakage magnetic field direction of the adjacent second permanent magnet, and the outer end is the end of the second permanent magnet far away from the axis of the stator core.
5. The flux reversing and switching flux linkage composite permanent magnet machine structure of claim 4, wherein each said third permanent magnet is magnetized in a radial direction of said stator core.
6. The flux reversing and switching flux linkage composite permanent magnet machine structure of claim 4, wherein an end of the second permanent magnet adjacent to the third permanent magnet is provided with an air gap slot adjacent to the third permanent magnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023079748.5U CN213717708U (en) | 2020-12-17 | 2020-12-17 | Magnetic flux reversal and switching flux linkage composite permanent magnet motor structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023079748.5U CN213717708U (en) | 2020-12-17 | 2020-12-17 | Magnetic flux reversal and switching flux linkage composite permanent magnet motor structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213717708U true CN213717708U (en) | 2021-07-16 |
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|---|---|---|---|
| CN202023079748.5U Active CN213717708U (en) | 2020-12-17 | 2020-12-17 | Magnetic flux reversal and switching flux linkage composite permanent magnet motor structure |
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|---|---|
| CN (1) | CN213717708U (en) |
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2020
- 2020-12-17 CN CN202023079748.5U patent/CN213717708U/en active Active
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