CN114884243B - Axial magnetic flux permanent magnet motor based on mixed rotor - Google Patents
Axial magnetic flux permanent magnet motor based on mixed rotor Download PDFInfo
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- CN114884243B CN114884243B CN202210438735.7A CN202210438735A CN114884243B CN 114884243 B CN114884243 B CN 114884243B CN 202210438735 A CN202210438735 A CN 202210438735A CN 114884243 B CN114884243 B CN 114884243B
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- 238000004519 manufacturing process Methods 0.000 abstract description 10
- 239000011162 core material Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 6
- 230000005347 demagnetization Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
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- 238000010146 3D printing Methods 0.000 description 1
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
- H02K1/182—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to stators axially facing the rotor, i.e. with axial or conical air gap
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/24—Rotor cores with salient poles ; Variable reluctance rotors
- H02K1/246—Variable reluctance rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/02—Machines with one stator and two or more rotors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
Abstract
The invention discloses an axial flux permanent magnet motor based on a mixed rotor and application thereof, wherein the axial flux motor based on the mixed rotor comprises a permanent magnet rotor, a reluctance rotor and a stator; the reluctance rotor and the permanent magnet rotor are symmetrically arranged along the axial direction, the stator is positioned between the permanent magnet rotor and the reluctance rotor, and the length of an air gap between the permanent magnet rotor and the stator is greater than that between the reluctance rotor and the stator. The maximum torque operation of the motor can be realized by fully utilizing the reluctance torque and the permanent magnet torque of the motor, the manufacturing cost of the axial flux permanent magnet motor is reduced, and the reluctance side obtains better torque density. The axial flux motor solves the problems in the manufacturing process of the axial flux motor in the prior art.
Description
Technical Field
The application relates to the technical field of magnetic flux permanent magnet motors, in particular to an axial magnetic flux permanent magnet motor based on a hybrid rotor and application.
Background
The statements in this section merely provide background information related to the present application and may not necessarily constitute prior art.
With the continuous development of high-performance permanent magnets, a permanent magnet motor with a permanent magnet as a core magnetic source is developed in a further step, and the variety is more various. According to the motor flux path, it can be divided into: axial flux electric machine, radial flux electric machine, transverse flux electric machine.
The basic structure of the axial flux motor comprises a disc stator and a disc rotor, wherein an air gap is planar, and the magnetic flux of the air gap is axially distributed. The axial flux motor has the characteristic of structural diversification, and the existing axial motor is mainly divided into the following four types according to topological structures: single-stator single-rotor axial motor, single-stator double-rotor axial motor, double-stator single-rotor axial motor, multi-stator multi-rotor axial motor.
The traditional radial flux motor cannot adapt to the emerging industrial environment due to the fact that the motor shaft is overlong, occupied volume is large, power density is low, compared with the radial flux motor, iron core materials used by the axial flux motor are fewer, and the size of a rotor is larger. At present, the axial motor is gradually widely applied, and the advantages of the high-speed axial motor are reflected from home appliances to military space flight and from generator energy systems to transportation vehicles.
Axial flux machines have been limited in their axial structure by materials and state of the art and have not been developed for a considerable period of time, but have been increasingly overcoming manufacturing problems with technological development. At present, the manufacturing process of the axial flux motor is greatly developed, but the manufacturing process still has a small gap relative to the radial motor.
Disclosure of Invention
In order to solve the defects in the prior art, the application provides an axial flux permanent magnet motor based on a hybrid rotor and application thereof, and the maximum torque operation of the motor is realized by fully utilizing the reluctance torque and the permanent magnet torque of the motor.
In a first aspect, the present application provides a hybrid rotor-based axial flux permanent magnet machine;
an axial flux permanent magnet machine based on a hybrid rotor, comprising:
the permanent-magnet rotor is provided with a permanent-magnet rotor,
the reluctance rotor and the permanent magnet rotor are symmetrically arranged along the axial direction;
a stator located between the permanent magnet rotor and the reluctance rotor;
the length of the air gap between the permanent magnet rotor and the stator is greater than the length of the air gap between the reluctance rotor and the stator.
By adopting the technical scheme, the maximum values of the permanent magnetic moment of the permanent magnet rotor and the magnetic resistance moment of the magnetic resistance rotor can be overlapped at the same current phase angle, so that two torque components of the motor are fully utilized, and the output torque of the motor is improved; the cost of the reluctance rotor is lower than that of the permanent magnet rotor, the high-low temperature demagnetization condition is not generated, and the manufacturing cost of the axial flux permanent magnet motor is reduced under the condition that the output torque of the motor is ensured; the permanent magnet rotor side air gap field is jointly synthesized by the permanent magnet and the stator winding, the reluctance rotor side is formed by the stator winding only, and the length of the air gap is unequal, so that the reluctance side obtains better torque density.
According to a further technical scheme, the permanent magnet of the permanent magnet rotor is formed by arranging a plurality of permanent magnet units along the circular arc direction so as to form a sinusoidal structure;
the reluctance of the reluctance rotor is formed by arranging a plurality of reluctance units along the circular arc direction so as to form a sinusoidal structure.
By adopting the technical scheme, the permanent magnets are set to be of a sinusoidal structure, so that the sinusoidal quality of the back electromotive force of the motor can be improved, the harmonic content of an air gap magnetic field is reduced, the cogging torque is weakened, and the torque pulsation of the motor is reduced; the magnetic resistance is set to be a sinusoidal structure, so that the magnetic resistance has high salient pole ratio, and the air gap magnetic field is relatively smooth; the permanent magnets are arranged in sections, so that the eddy current loss of the permanent magnets is reduced, and the consumption of the permanent magnets is low under the condition of ensuring the quality of output torque; the permanent magnet and the magnetic resistance are arranged in sections, so that the surface loss paths are cut off, the permanent magnet and the magnetic resistance sections conduct and dissipate heat through the permanent magnet sheath and the magnetic resistance sheath, and meanwhile, the permanent magnet and the magnetic resistance which are arranged in sections can reduce the stress born by the permanent magnet sheath and the magnetic resistance sheath during operation.
According to a further technical scheme, the permanent magnet rotor comprises a permanent magnet, a permanent magnet end disc and a permanent magnet sheath, and the reluctance rotor comprises reluctance, a reluctance end disc and a reluctance sheath; the thickness of the permanent magnet sheath is equal to that of the permanent magnet; the thickness of the magnetic resistance sheath is equal to that of the magnetic resistance sheath;
the permanent magnet is arranged on the side surface of the permanent magnet end disc, which is close to the stator, and the permanent magnet sheath is sleeved on the permanent magnet; the magnetic resistance is arranged on the side surface of the magnetic resistance end disc, which is close to the stator, and the magnetic resistance sheath is sleeved on the magnetic resistance.
By adopting the technical scheme, the permanent magnet sheath and the magnetic resistance sheath are respectively arranged in the residual spaces of the permanent magnet end disc and the magnetic resistance end disc, so that the structure is compact and the effective air gap length of the motor is not influenced; the permanent magnet sheath is used for counteracting the centrifugal force generated by the permanent magnet in the high-speed running state, and the magnetic resistance sheath is used for counteracting the centrifugal force generated by the magnetic resistance in the high-speed running state.
Preferably, the permanent magnet rotor and the reluctance rotor have the same thickness, the permanent magnet end disc and the reluctance end disc are the same in material, and the permanent magnet sheath and the reluctance sheath are the same in material.
By adopting the technical scheme, the weights of the permanent magnet rotor and the reluctance rotor are approximate, and the radial unbalanced force of the axial flux permanent magnet motor is eliminated.
According to a further technical scheme, the stator consists of a stator iron core and a stator winding; the stator core is of a slotless structure, and the stator winding is a three-phase winding.
By adopting the technical scheme, the cogging torque is eliminated, so that vibration noise is effectively reduced, winding of the stator winding is facilitated, the eddy current density of the winding part at the outer diameter of the stator core is reduced, the formation rate of high-temperature hot spots is reduced, and the processing is convenient and fast and the loss is low.
Preferably, the stator core is made of a low-loss novel SMC composite soft magnetic material.
By adopting the technical scheme, compared with the common silicon steel sheet, the stator core has lower iron loss, better stability and higher magnetic permeability of the novel low-loss SMC composite soft magnetic material, can adopt a powder production process, can be manufactured by 3D printing, and has better process.
Preferably, the windings of the three-phase winding are litz wires.
By adopting the technical scheme, the litz wire replaces a round wire with a thicker section with a plurality of thin wires, so that the wire is softer and more flexible, is convenient to wind on the stator core, and simultaneously effectively reduces the eddy current loss caused by skin effect and proximity effect.
According to a further technical scheme, the reluctance of the reluctance rotor is made of a low-loss novel SMC composite soft magnetic material.
By adopting the technical scheme, the magnetic permeability of the reluctance rotor is improved, so that the trend of magnetic lines is more concentrated, and the reluctance torque of the motor is relatively increased.
The technical proposal further comprises a rotating shaft;
the permanent magnet rotor, the reluctance rotor and the stator positioned between the permanent magnet rotor and the reluctance rotor are connected through the rotating shaft.
In a second aspect, the present application provides a high-end apparatus;
high-end equipment comprises the axial flux permanent magnet motor based on the mixed rotor
Compared with the prior art, the beneficial effects of this application are:
1. the magnetic resistance and the permanent magnet are mutually symmetrical, the length of the air gap of the magnetic resistance rotor is lower than that of the air gap of the permanent magnet rotor, and the maximum values of the permanent magnet torque of the surface-mounted permanent magnet rotor and the magnetic resistance torque of the magnetic resistance rotor can be overlapped at the same current phase angle, so that two torque components of the motor are fully utilized;
2. the permanent magnets of the permanent magnet rotor are arranged in a sinusoidal way, so that the sinusoidal quality of the back electromotive force of the motor can be improved, the harmonic content of an air gap magnetic field is reduced, and simultaneously, the sinusoidal way weakens cogging torque and reduces the torque pulsation of the motor; the reluctance of the reluctance rotor is sinusoidal, the reluctance rotor has higher salient pole ratio, the air gap field is relatively smooth, and the cost is lower than that of the permanent magnet rotor, so that the production cost of the axial flux permanent magnet motor is reduced, and the conditions of high-temperature demagnetization and low-temperature demagnetization are avoided;
3. except that the permanent magnet and the magnetic resistance materials of the two rotors are different, the permanent magnet end disc, the magnetic resistance end disc, the permanent magnet sheath and the magnetic resistance sheath are made of the same specification materials, so that the weight of the two rotors is approximately the same, and the radial unbalanced force is eliminated;
4. the stator core adopts a slotless structure, and is made of a low-loss novel SMC composite soft magnetic material, so that litz wire winding is facilitated, the eddy current density at the outer diameter winding position of the stator core is reduced, the formation rate of high-temperature hot spots is reduced, the processing is convenient and rapid, the loss is low, and the cogging torque is avoided, so that vibration noise is effectively reduced;
5. compared with the traditional round wire, the litz wire is used for replacing the round wire with a thicker section by a plurality of thin wires, so that the wires are softer and more flexible, are convenient to wind on the stator, and simultaneously, the eddy current loss caused by skin effect and proximity effect is effectively reduced.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application.
FIG. 1 is a schematic diagram of an explosion of a structure according to an embodiment of the present application
FIG. 2 is a schematic diagram of a reluctance rotor and a permanent magnet rotor according to an embodiment of the present application
FIG. 3 is a schematic diagram of stator structure and winding phase distribution in an embodiment of the present application
Fig. 4 is a schematic side view of an embodiment of the present application.
Wherein, 1, permanent magnet rotor; 101. permanent magnet end plates; 102. a permanent magnet; 103. a permanent magnet sheath; 2. a reluctance rotor; 201. a magneto-resistive end disk; 202. a magneto-resistive sheath; 203. reluctance; 3. a stator; 301. a stator core; 302. a stator winding; 4. a rotating shaft.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. 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 application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, unless the context clearly indicates otherwise, the singular forms also are intended to include the plural forms, and furthermore, it is to be understood that the terms "comprises" and "comprising" and any variations thereof are intended to cover non-exclusive inclusions, such as, for example, processes, methods, systems, products or devices that comprise a series of steps or units, are not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or inherent to such processes, methods, products or devices.
Embodiments of the invention and features of the embodiments may be combined with each other without conflict.
Example 1
The embodiment provides an axial flux permanent magnet motor based on a hybrid rotor.
As shown in fig. 1-3, the axial flux permanent magnet motor based on a hybrid rotor comprises a permanent magnet rotor 1, a reluctance rotor 2, a stator 3 and a rotating shaft 4; the permanent magnet rotor 1 and the reluctance rotor 2 are axially and symmetrically arranged along the rotating shaft 4; the stator 3 is arranged between the permanent magnet rotor 1 and the reluctance rotor 2, and the rotating shaft 4 sequentially passes through the reluctance rotor 2, the stator 3 and the permanent magnet rotor 1; the length of the air gap between the permanent magnet rotor 1 and the stator 3 is larger than that between the reluctance rotor 2 and the stator 3; through analyzing the reluctance torque of the motor, the too large air gap can cause the too low efficiency of reluctance torque, the too small air gap can cause unilateral magnetic pulling force to increase, the motor is not stable to operate, the air gap field of the permanent magnet rotor 1 side is jointly synthesized by the permanent magnet 102 and the stator winding 302, the reluctance rotor 2 side is only formed by the stator winding 302, the air gap length of the reluctance rotor 2 side needs to be reduced to obtain more magnetic flux in order to obtain better torque density, the air gap length between the permanent magnet rotor 1 and the stator 3 and the air gap length between the reluctance rotor 2 and the stator 3 are determined according to simulation, different air gap length samples are acquired through JMAG simulation software according to the specifications of the permanent magnet rotor 1 and the reluctance rotor 2, the reluctance torque and the axial attraction force of the reluctance rotor 2 are calculated, the best effect is comprehensively compared, and the air gap length between the permanent magnet rotor 1 and the stator 3 and the air gap length between the reluctance rotor 2 and the stator 3 are obtained.
As shown in fig. 1 and 4, the axial flux permanent magnet motor based on the hybrid rotor has a double-rotor structure, and the permanent magnet rotor 1 and the reluctance rotor 2 have an axial double-layer structure with the same thickness. The permanent magnet rotor 1 comprises a permanent magnet 102, a permanent magnet end disc 101 fixed on the rotating shaft 4 and a permanent magnet sheath 103; the number of the permanent magnets 102 is 2, the permanent magnets 102 are symmetrically clung to the side surface of the permanent magnet end disc 101, which is close to the stator 3, around the center of the rotating shaft 4 to form a surface-mounted permanent magnet rotor 1, the magnetic poles of the two permanent magnets 102 are opposite, one permanent magnet is an N pole, and the other permanent magnet is an S pole; the outer diameter of the permanent magnet sheath 103 is the same as that of the permanent magnet end disc 101, the thickness of the permanent magnet sheath 103 is the same as that of the permanent magnet 102, and the permanent magnet sheath 103 is sleeved on the permanent magnet 102 and is tightly attached to the permanent magnet end disc 101 and fixed on the permanent magnet end disc 101 through screws. The reluctance rotor 2 includes a reluctance 203, a reluctance end disk 201 fixed to the rotating shaft 4, and a reluctance sheath 202; the number of the magnetic resistance 203 is 2, the magnetic resistance 203 is symmetrically clung to the side surface of the magnetic resistance end disc 201, which is close to the stator 3, of the center of the rotating shaft 4, the magnetic poles of the two magnetic resistance 203 are opposite, one magnetic pole is an N pole, and the other magnetic pole is an S pole; the outer diameter of the magnetic resistance sheath 202 is the same as that of the magnetic resistance end disc 201, the thickness of the magnetic resistance sheath 202 is the same as that of the magnetic resistance 203, and the magnetic resistance sheath 202 is sleeved on the magnetic resistance 203 and is tightly attached to the magnetic resistance end disc 201, and is fixed on the magnetic resistance end disc 201 through screws.
The permanent magnet 102 is formed by arranging 5 permanent magnet units along the circular arc direction and combining to form a sinusoidal structure; the sinusoidal structure is improved by the crescent moon shape, so that the consumption and processing difficulty of the permanent magnet 102 are reduced, and the axial attraction of the motor is reduced. As shown in fig. 2, as a concept of a sectional arrangement, the most middle permanent magnet unit is a rectangular permanent magnet unit, and both sides of the rectangular permanent magnet unit are symmetrically and sequentially provided with a parallelogram permanent magnet unit and a triangle permanent magnet unit; the triangular permanent magnet units, the parallelogram permanent magnet units and the rectangular permanent magnet units are easy to cut and manufacture, and the consumption of the sinusoidal permanent magnet 102 is reduced while the output torque quality is maintained. The reluctance 203 and the permanent magnet 102 are axially and mirror-symmetrical along the rotating shaft 4, the reluctance 203 is formed by arranging 5 reluctance units along the circular arc direction, the structure and the position of the reluctance units are identical to those of the permanent magnet units, namely, the middle reluctance unit is a rectangular reluctance unit, and the two sides of the rectangular reluctance unit are symmetrically and sequentially provided with a parallelogram reluctance unit and a triangle reluctance unit.
As shown in fig. 3, the stator 3 includes a stator core 301 and a stator winding 302; the stator core 301 is in a circular sleeve shape, adopts a slotless structure, is circumferentially chamfered on the surface, and is formed by laminating low-loss composite SMC materials; the stator winding 302 is a three-phase winding, and is uniformly wound around the stator core 301 using litz wire in a vertical direction around the circumference of the stator core 301. In the figure "+" represents the incoming line direction of each phase winding, "-" represents the outgoing line direction of each phase winding, and A, B, C represents the three phases of the stator winding 302, respectively, each phase being separated by a mechanical angle of 60 °. The distribution pattern within each phase of the stator winding 302 may vary, and the distribution of each phase winding is used herein for illustration only.
The stator winding 302 adopts concentric litz wire winding, adopts a plurality of thin wires to replace thick wires with larger sections, and twists the thin wires with insulating layers in the diameter direction, wherein the thin wires are carbon fiber composite copper wires with ultrahigh conductivity and good heat conduction performance; the loss generated by the coil is reduced, and the coil is easy to manufacture and wind and has good heat dissipation performance. Concentric litz wire windings are uniformly and tightly wound on the surface of the stator core 301, and three-phase windings are symmetrically arranged at 120 degrees in space to form an electromagnetic phase relation of the motor.
In this embodiment, the permanent magnet sheath 103 and the reluctance sheath 202 are both made of light aluminum alloy materials, the reluctance 203 of the reluctance rotor 2 is made of a low-loss novel SMC composite soft magnetic material, and the permanent magnet 102 is a high-performance permanent magnet manufactured by additive materials.
The axial magnetic flux structure is adopted in the embodiment, so that the axial effective air gap length is adjustable, the axial effective air gap is not influenced by the permanent magnet sheath 103, the volume is compact, and the heat dissipation performance is excellent; the stator core 301 adopts a slotless structure to eliminate cogging torque and reduce vibration noise; the stator winding 302 improves heat dissipation and efficiency by using flat wire winding techniques; the permanent magnet 102 realizes the sine of magnetic linkage and back electromotive force through shape optimization design, so that the motor has the advantages of low harmonic distortion, low vibration noise, high efficiency and the like; the permanent magnet sheath 103 is arranged on the residual space of the surface of the permanent magnet rotor 1 except the permanent magnet 102 with the optimized shape, has compact structure and does not influence the effective air gap length of the motor.
Example two
The embodiment discloses high-end equipment, and the high-end equipment comprises the axial flux permanent magnet motor based on the hybrid rotor.
The foregoing embodiments are directed to various embodiments, and details of one embodiment may be found in the related description of another embodiment.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.
Claims (5)
1. An axial flux permanent magnet motor based on a hybrid rotor is characterized by comprising,
the permanent-magnet rotor is provided with a permanent-magnet rotor,
the reluctance rotor and the permanent magnet rotor are symmetrically arranged along the axial direction; the permanent magnet rotor comprises a permanent magnet, a permanent magnet end disc and a permanent magnet sheath, and the reluctance rotor comprises reluctance, a reluctance end disc and a reluctance sheath; the permanent magnet of the permanent magnet rotor is formed by arranging a plurality of permanent magnet units along the circular arc direction so as to form a sinusoidal structure; the magnetic resistance of the magnetic resistance rotor is formed by arranging a plurality of magnetic resistance units along the circular arc direction so as to form a sinusoidal structure; the permanent magnet units in the middle of the permanent magnets arranged in a segmented mode are rectangular permanent magnet units, and parallelogram permanent magnet units and triangle permanent magnet units are symmetrically and sequentially arranged on two sides of each rectangular permanent magnet unit; the magneto-resistance units in the middle of the magneto-resistance units arranged in a segmented mode are rectangular magneto-resistance units, and the parallelogram magneto-resistance units and the triangle magneto-resistance units are symmetrically and sequentially arranged on two sides of the rectangular magneto-resistance units;
and a stator located between the permanent magnet rotor and the reluctance rotor;
the length of the air gap between the permanent magnet rotor and the stator is larger than that between the reluctance rotor and the stator; the stator consists of a stator iron core and a stator winding; the stator iron core is of a slotless structure, and the stator winding is a three-phase winding; the stator core is made of SMC composite soft magnetic materials; the windings of the three-phase windings are litz wires; the magnetic resistance is made of SMC composite soft magnetic material.
2. The hybrid rotor-based axial flux permanent magnet machine of claim 1, wherein the thickness of the permanent magnet jacket is equal to the thickness of the permanent magnet, and the thickness of the reluctance jacket is equal to the thickness of the reluctance jacket;
the permanent magnet is arranged on the side surface of the permanent magnet end disc, which is close to the stator, and the permanent magnet sheath is sleeved on the permanent magnet; the magnetic resistance is arranged on the side surface of the magnetic resistance end disc, which is close to the stator, and the magnetic resistance sheath is sleeved on the magnetic resistance.
3. The hybrid rotor-based axial flux permanent magnet machine of claim 2, wherein the permanent magnet rotor is the same thickness as the reluctance rotor, the permanent magnet end plates are the same material as the reluctance end plates, and the permanent magnet jacket is the same material as the reluctance jacket.
4. The hybrid rotor-based axial flux permanent magnet machine of claim 1, further comprising a rotating shaft;
the permanent magnet rotor, the reluctance rotor and the stator positioned between the permanent magnet rotor and the reluctance rotor are connected through the rotating shaft.
5. High-end equipment, characterized in that it comprises a hybrid rotor-based axial flux permanent magnet machine according to any of the preceding claims 1-4.
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| CN202210438735.7A CN114884243B (en) | 2022-04-25 | 2022-04-25 | Axial magnetic flux permanent magnet motor based on mixed rotor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210438735.7A CN114884243B (en) | 2022-04-25 | 2022-04-25 | Axial magnetic flux permanent magnet motor based on mixed rotor |
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| CN114884243A CN114884243A (en) | 2022-08-09 |
| CN114884243B true CN114884243B (en) | 2024-01-19 |
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| JP2004304912A (en) * | 2003-03-31 | 2004-10-28 | Fujitsu General Ltd | Axially gapped induction motor |
| JP2010119167A (en) * | 2008-11-11 | 2010-05-27 | Honda Motor Co Ltd | Axial gap motor, and method of manufacturing rotor thereof |
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