CN219627444U

CN219627444U - Magnetic suspension stator-rotor structure, motor, generator and wind driven generator system

Info

Publication number: CN219627444U
Application number: CN202321028088.9U
Authority: CN
Inventors: 杨若菡; 叶国良; 李铁才; 李晴
Original assignee: Jieluyuan Technology Shenzhen Co ltd
Current assignee: Jieluyuan Technology Shenzhen Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2023-09-01
Anticipated expiration: 2033-04-28

Abstract

The utility model belongs to the technical field of motors, and particularly relates to a magnetic suspension stator-rotor structure, a motor, a generator and a wind driven generator system, wherein the magnetic suspension stator-rotor structure comprises a stator and a rotor, the stator comprises n sections of stator segments which are arranged at intervals along the axial direction of the stator, each stator segment comprises a stator core and a stator winding, a plurality of teeth are arranged on the stator core along the circumferential direction of the stator core, a winding groove is formed between every two adjacent teeth, and the stator windings are embedded in the winding groove; the rotor comprises n sections of rotor sections which are arranged at intervals along the axial direction of the rotor, the rotor sections comprise a rotor body and a plurality of permanent magnets which are arranged on one side of the rotor body close to the stator sections, and the axially adjacent permanent magnets are arranged in a staggered manner along the circumferential direction or the axially adjacent tooth parts are arranged in a staggered manner along the circumferential direction. Compared with the slotless stator-rotor structure, the utility model is used for the motor or the engine, and can improve the overall performance and efficiency of the motor or the engine.

Description

Magnetic suspension stator-rotor structure, motor, generator and wind driven generator system

Technical Field

The utility model belongs to the technical field of motors, and particularly relates to a magnetic suspension stator-rotor structure, a motor, a generator and a wind driven generator system.

Background

The stator and rotor structure of the existing motor or engine comprises a stator and a rotor, wherein the stator comprises a slotted stator and a non-slotted stator. When the rotor permanent magnet and the stator teeth meet or are separated, the magnetic field nearby the rotor permanent magnet and the stator teeth changes, so that the magnetic co-energy of air between the permanent magnet and the stator teeth changes, tooth slot positioning moment is generated by the change of the magnetic co-energy, and the tooth slot positioning moment can cause the problems of torque pulsation, vibration noise, unstable operation and the like when the motor or the engine runs.

The slotless stator does not contain stator teeth or their corresponding slots, and the slotless stator can eliminate cogging torque, but the motor or engine employing the slotless stator is still lower in overall performance and efficiency than the motor or engine employing the slotted stator.

Disclosure of Invention

The utility model aims to provide a magnetic suspension stator-rotor structure, a motor, a generator and a wind driven generator system, so as to reduce tooth space positioning moment and improve the performance of the motor or the generator.

In order to achieve the above object, the present utility model provides a magnetic levitation stator and rotor structure, comprising:

the stator comprises n sections of stator segments which are arranged at intervals along the axial direction of the stator, n is an integer greater than or equal to 2, the stator segments comprise a stator core and stator windings, a plurality of tooth parts are arranged on the stator core along the circumferential direction of the stator core, a winding groove is formed between every two adjacent tooth parts, and the stator windings are embedded in the winding groove;

the rotor comprises n sections of rotor segments which are arranged at intervals along the axial direction of the rotor, the rotor segments are matched with the stator segments in a one-to-one correspondence manner, and the rotor segments comprise a rotor body and a plurality of permanent magnets which are arranged on one side of the rotor body close to the stator segments;

the magnetic suspension stator-rotor structure is characterized in that the stator and the rotor are arranged in one of the following modes:

the rotor is nested outside the stator and is coaxially arranged, the permanent magnets which are axially adjacent are arranged in a staggered way along the circumferential direction clockwise or anticlockwise direction, or,

the stators are nested outside the rotor and coaxially arranged, and the axially adjacent tooth parts are arranged in a staggered manner along the circumferential direction clockwise or anticlockwise direction.

Optionally, the rotor body is sleeved outside the stator core, the tooth part and the winding groove are arranged on the outer cylindrical surface of the stator core, the permanent magnets are arranged on the inner cylindrical surface of the rotor body, the permanent magnets adjacent in the axial direction are staggered along the clockwise direction or the anticlockwise direction, and the stator winding comprises a fractional groove concentrated winding.

Optionally, the axial length of the stator core is equal to the axial length of the permanent magnet, the n-section stator segments and the n-section rotor segments are all arranged along an axial interval preset axial distance, the preset axial distance is smaller than a multiple of a radial magnetic gap between the stator and the rotor, and the multiple is smaller than or equal to 2.

Optionally, when the stator and the rotor are nested and coaxially installed, the stator segment and the rotor segment have offset along the axial direction, the offset is a preset multiple of the preset axial distance, the preset multiple is smaller than 1, the preset axial distance is smaller than a multiple of the axial length, and the multiple is 5-10.

Optionally, when the n sections of stator segments and the n sections of rotor segments are nested and installed together, the permanent magnets adjacent to each other in the axial direction are sequentially staggered by 360 °/(PZn) along the clockwise or anticlockwise direction of the circumferential direction, wherein P is the number of pole pairs, and Z is the number of slots of the stator core; or, the axially adjacent tooth parts are sequentially staggered by 360 °/(PZn) along the circumferential direction clockwise or anticlockwise direction, wherein P is the number of magnetic pole pairs, and Z is the number of slots of the stator core.

Optionally, each section of the rotor section comprises a plurality of permanent magnets, and the plurality of permanent magnets are vertically arranged at intervals along the circumferential direction of the rotor body at the same axial position to form a section of the rotor section;

each section of stator section comprises a plurality of iron cores and a plurality of coil windings, the plurality of iron cores are axially stacked, teeth of the plurality of iron cores are stacked to form a plurality of teeth, the plurality of coil windings are embedded into winding grooves formed in the same axial position between corresponding teeth to form a section of stator section, each section of stator section corresponds to a group of three-phase motor stator windings, and the three-phase motor stator windings corresponding to n sections of stator sections are communicated in a serial or parallel mode.

The utility model also provides a magnetic levitation motor comprising:

a magnetic levitation stator-rotor structure;

the stator or the rotor is connected with an output shaft of the motor, and the stator winding receives externally input current.

The utility model also provides a magnetic levitation generator comprising:

a magnetic levitation stator-rotor structure;

the stator or the rotor is connected with a power input piece, and the stator winding outputs current outwards.

Optionally, the magnetic suspension generator further comprises a vertical shaft and a bearing, the stator core is arranged on the vertical shaft in a penetrating mode, the bearing is connected with the vertical shaft and the rotor body, the rotor body is located on the outer side of the stator to form an outer rotor motor, and the rotor is connected with the power input piece.

The utility model also provides a magnetic suspension wind driven generator system, which comprises:

the magnetic suspension generator;

the power input piece comprises the fan blade, and the fan blade is connected with the rotor body.

The magnetic suspension stator-rotor structure, the motor, the generator and the wind driven generator system disclosed by the utility model have the following beneficial effects:

in the utility model, the rotor and the stator which are matched with each other are equally divided into n sections, n is an integer greater than or equal to 2, each section of stator section comprises a stator iron core and a stator winding, a plurality of tooth parts are arranged on the stator iron core along the circumferential direction of the stator iron core, each section of rotor section comprises a rotor body and a plurality of permanent magnets arranged on one side of the rotor body close to the stator section, and the tooth parts which are axially adjacent are arranged in a staggered manner along the circumferential direction clockwise or anticlockwise direction or the tooth parts which are axially adjacent are arranged in a staggered manner along the circumferential direction clockwise or anticlockwise direction can greatly reduce the tooth groove positioning moment of the magnetic levitation stator rotor structure.

Other features and advantages of the utility model will be apparent from the following detailed description, or may be learned by the practice of the utility model.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model. It is evident that the drawings in the following description are only some embodiments of the present utility model and that other drawings may be obtained from these drawings without inventive effort for a person of ordinary skill in the art.

Fig. 1 is a schematic diagram of a magnetic levitation stator and rotor structure in an embodiment of the utility model.

Fig. 2 is a schematic illustration of circumferential misalignment of permanent magnets in an embodiment of the utility model.

Fig. 3 is a schematic structural diagram of a magnetic levitation motor according to an embodiment of the present utility model.

Fig. 4 is a schematic structural diagram of a magnetic levitation stator-generator in an embodiment of the utility model.

Fig. 5 is a schematic structural diagram of a magnetic levitation wind power generator system according to an embodiment of the present utility model.

Reference numerals illustrate:

111. a stator core; 112. a stator winding;

121. a rotor body; 122. a permanent magnet;

130. an output shaft of the motor;

200. a magnetic levitation generator; 210. a power input member; 220. a vertical shaft; 230. a bearing; 240. and (5) a fan blade.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments may be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the utility model. One skilled in the relevant art will recognize, however, that the utility model may be practiced without one or more of the specific details, or with other methods, components, devices, steps, etc. In other instances, well-known methods, devices, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the utility model.

The utility model will be described in further detail with reference to the drawings and the specific examples. It should be noted that the technical features of the embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1, the magnetic levitation stator-rotor structure includes a stator and a rotor. The stator includes n stator segments 110 spaced apart along its axis, n being an integer greater than or equal to 2, e.g., n may be 2, 4, 6, etc. The stator segment 110 includes a stator core 111 and a stator winding 112, a plurality of teeth are provided on the stator core 111 along a circumferential direction thereof, and a winding groove is formed between adjacent teeth, and the stator winding 112 is embedded in the winding groove. The rotor includes n rotor segments 120 arranged at intervals along its axial direction, the rotor segments 120 being fitted one-to-one with the stator segments 110. The rotor segment 120 includes a rotor body 121 and a plurality of permanent magnets 122 disposed on a side of the rotor body 121 adjacent to the stator segment 110, the permanent magnets 122 being disposed on a side of the rotor body 121 adjacent to the stator core 111.

Wherein, the stator and the rotor are arranged in one of the following modes:

the rotor is nested outside the stator and coaxially arranged, and the permanent magnets 122 axially adjacent to each other are staggered along the circumferential direction clockwise or anticlockwise;

the stator is nested outside the rotor and coaxially arranged, and the axially adjacent tooth parts are staggered along the circumferential direction clockwise or anticlockwise.

That is, in the magnetic levitation stator-rotor structure, the rotor may be nested outside the stator, but not limited thereto, and the stator may also be nested outside the rotor, as the case may be. The axially adjacent permanent magnets 122 may be disposed in a staggered manner in a clockwise or counterclockwise direction in the circumferential direction, but not limited thereto, and the axially adjacent teeth may be disposed in a staggered manner in a clockwise or counterclockwise direction in the circumferential direction, as the case may be.

In the utility model, the mutually matched rotor and stator are divided into n sections, each section of stator section 110 comprises a stator iron core 111 and a stator winding 112, a plurality of teeth parts are arranged on the stator iron core 111 along the circumferential direction of the stator iron core, each section of rotor section 120 comprises a rotor body 121 and a plurality of permanent magnets 122 arranged on one side of the rotor body 121 close to the stator section 110, and the tooth socket positioning moment of the magnetic levitation stator-rotor structure can be greatly reduced by arranging the axially adjacent teeth parts in a staggered manner along the circumferential direction or arranging the axially adjacent teeth parts in a staggered manner along the circumferential direction.

For example, referring to fig. 1, a rotor body 121 is sleeved outside a stator core 111, tooth portions and winding grooves are provided on an outer cylindrical surface of the stator core 111, permanent magnets 122 are provided on an inner cylindrical surface of the rotor body 121, and axially adjacent permanent magnets 122 are offset in a circumferential clockwise or counterclockwise direction.

It should be noted that, the axially adjacent permanent magnets 122 may be offset in a clockwise or counterclockwise direction, but not limited thereto, and the axially adjacent teeth may be offset in a clockwise or counterclockwise direction, as the case may be.

The rotor body 121 is sleeved outside the stator core 111, and the tooth parts and the winding grooves are arranged on the outer cylindrical surface of the stator core 111, that is, the magnetic levitation stator-rotor structure is used for an outer rotor motor or an outer rotor engine, and the outer rotor motor has the advantages of large rotation inertia, stable operation and the like and has irreplaceable unique advantages compared with an inner rotor structure. The rotor part of the outer rotor motor is directly connected with the driving element, so that not only can the useless space between the motor and the equipment be effectively reduced, but also the energy loss of indirect driving is greatly reduced due to the direct driving mode.

In some embodiments, n stator segments 110 and n rotor segments 120 are nested together, and axially adjacent permanent magnets 122 are sequentially displaced by β ° in a circumferential clockwise or counterclockwise direction when the axially adjacent permanent magnets 122 are displaced in the circumferential clockwise or counterclockwise direction, as shown in fig. 2, β=360°/(PZn), where P is the pole pair number and Z is the slot number of the stator core 111.

It should be noted that, when the axially adjacent permanent magnets 122 are displaced in the circumferential direction clockwise or counterclockwise direction, the axially adjacent permanent magnets 122 are sequentially displaced in the circumferential direction clockwise or counterclockwise direction by 360 °/(PZn), but not limited thereto, when the axially adjacent tooth portions are displaced in the circumferential direction clockwise or counterclockwise direction, the axially adjacent tooth portions are sequentially displaced in the circumferential direction clockwise or counterclockwise direction by 360 °/(PZn), wherein P is the pole pair number, and Z is the slot number of the stator core 111, and the specific situation may be determined.

According to the utility model, the axially adjacent permanent magnets 122 are sequentially staggered by 360 degrees/(PZN) along the circumferential direction clockwise or anticlockwise direction, namely the positioning torque is smoothly positioned through the equivalent inclined permanent magnets 122, so that the positioning torque can be reduced by 2-100 times, and the magnetic suspension stator-rotor structure is used for a generator, so that the starting resistance of the generator can be greatly reduced.

Referring to fig. 1, in the stator configuration, the stator windings 112 comprise fractional-slot concentrated windings. Wherein the number of slots per pole q=Z/(2 Pm). Ltoreq.1/2, Z is the number of slots, 2P is the number of poles, and m is the number of phases. The larger the number of grooves Z, the more suitable the generator with larger outer diameter is constructed, and the larger the power capacity of the generator is.

It should be noted that, the stator winding 112 may be a fractional slot concentrated winding, but not limited thereto, and the stator winding 112 may also be an integer slot.

Stator winding 112 includes fractional-slot concentrated windings, which have advantages of simple winding structure, less copper consumption at the ends, high efficiency, and less torque ripple than integer-slot distributed windings.

Referring to fig. 1, each of the rotor segments 120 includes a plurality of permanent magnets 122, and the plurality of permanent magnets 122 are vertically spaced apart from each other in the circumferential direction of the rotor body 121 at the same axial position to form a segment of the rotor segment 120. Each section of stator segment 110 comprises a plurality of iron cores and a plurality of coil windings, the plurality of iron cores are axially stacked, teeth of the plurality of iron cores are stacked to form a plurality of teeth, the plurality of coil windings are embedded into winding grooves formed in the same axial position between the corresponding teeth to form a section of stator segment 110, each section of stator segment 110 correspondingly obtains a group of three-phase motor stator windings 112, and the three-phase motor stator windings 112 corresponding to n sections of stator segments 110 are communicated in a serial or parallel mode.

Compared with the mode that the stator windings 112 are independently arranged on each section of stator segment 110, the utility model avoids the problem of doubling the winding end, and the magnetic levitation stator-rotor structure is used for a motor or a generator, can reduce the axial size of the motor or the generator and improves the efficiency of the motor or the generator.

Referring to fig. 1, the axial length of the stator core 111 and the axial length of the permanent magnet 122 are equal, and the n-segment stator segment 10 and the n-segment rotor segment 120 are each disposed along an axial interval of a preset axial distance λ, where the preset axial distance λ is smaller than a multiple of a radial magnetic gap δ between the stator and the rotor and is greater than or equal to the radial magnetic gap δ between the stator and the rotor, and the multiple is less than or equal to 2. That is, the preset axial spacing λ is equal to 1 to 2 times the radial magnetic gap δ.

When the magnetic suspension stator-rotor structure is used for a motor or a generator, the rotor and the stator are connected through the bearing, the service life of the bearing can be seriously influenced by the eccentric problem between the rotor and the stator, and particularly, when the working environment of the motor or the generator is severe, the bearing between the rotor and the stator is more easily damaged.

In the utility model, the rotor and the stator which are matched with each other are equally divided into n sections, n is an integer greater than or equal to 2, meanwhile, the preset axial distance lambda is smaller than the multiple of the radial magnetic gap delta between the stator and the rotor and greater than or equal to the radial magnetic gap delta between the stator and the rotor, the rotor and the stator jointly define a magnetic suspension bearing which can be used for providing axial force, when the motor or the generator is vertically installed, the radial component of the magnetic attraction force between the stator iron core 111 and the permanent magnet 122 is zero, and the axial magnetic suspension force can counteract the gravity of the rotor and the connecting accessories thereof, so the design can solve the problem that the bearing between the rotor and the stator is more easily damaged.

Referring to fig. 1, when the stator and the rotor are nested and coaxially installed, the stator segment 110 and the rotor segment 120 have a misalignment amount α in the axial direction, where the misalignment amount α is a preset multiple of the preset axial distance λ, and the preset multiple is smaller than 1. The stator winding 112 and the permanent magnet 122 have a misalignment amount α along the axial direction, which is essentially used to adjust the bearing capacity of the magnetic suspension bearing. For example, when the offset α is 0.5 times the preset axial distance λ, that is, α=0.5λ, the bearing capacity of the magnetic bearing may be maximized. The preset axial distance λ is smaller than a multiple of the axial length of the stator core 111 by a factor of 5-10, that is, the preset axial distance λ is much smaller than the axial length of the stator core 111, for example, the preset axial distance λ may be equal to one tenth of the axial length of the stator core 111.

All stator windings 112 and permanent magnets 122 are staggered in the axial direction, meanwhile, the bearing capacity of all magnetic suspension bearings is adjusted, the magnetic suspension force of a magnetic suspension stator-rotor structure is increased, and when the magnetic suspension stator-rotor structure is used for a motor or a generator, the mass of a rotor and a connecting accessory thereof can be larger, and the design space of the rotor and the connecting accessory thereof is increased.

In addition, the preset axial distance lambda is far smaller than the axial length of the stator core 111, so that the design is adopted, the axial magnetic suspension rigidity is almost proportional to the number n of segments, the bearing capacity of the magnetic suspension bearing can be maximum, meanwhile, the preset axial distance lambda is far smaller than the axial length of the stator core 111, the influence on the axial length of the stator core 111 is small, the stator winding 112 covers the preset axial distance lambda, the actual effective length of the stator winding 112 is unchanged, and the effective length of the motor or the generator is not influenced when the magnetic suspension stator-rotor structure is applied to the motor or the generator, so that the efficiency of the motor or the generator is ensured.

Referring to fig. 3, the utility model also provides a magnetic suspension motor, which comprises the magnetic suspension stator-rotor structure disclosed in the foregoing. In the magnetic levitation stator-rotor structure, the rotor is connected to the motor output shaft 130, and the stator winding 112 receives an externally input current.

In the magnetic levitation stator-rotor structure, the rotor may be connected to the motor output shaft 130, but not limited thereto, and in the magnetic levitation stator-rotor structure, the stator may be connected to the motor output shaft 130, as the case may be. That is, the magnetic levitation stator-rotor structure may be used for an outer rotor motor or an inner rotor motor.

The magnetic suspension motor comprises a magnetic suspension stator-rotor structure, wherein, in the magnetic suspension stator-rotor structure, a rotor and a stator which are matched with each other are equally divided into n sections, each section of stator section 110 comprises a stator core 111 and a stator winding 112, a plurality of tooth parts are arranged on the stator core 111 along the circumference of the stator core, each section of rotor section 120 comprises a rotor body 121 and a plurality of permanent magnets 122 arranged on one side of the rotor body 121 close to the stator section 110, and through arranging axially adjacent tooth parts along the circumference dislocation or axially adjacent tooth parts along the circumference dislocation, the tooth groove positioning moment of the magnetic suspension stator-rotor structure can be greatly reduced, and compared with a motor adopting a slotless stator-rotor structure, the integral performance and the efficiency of the motor can be improved.

Referring to fig. 4, the present utility model further provides a magnetic levitation generator 200, where the magnetic levitation generator 200 includes the magnetic levitation stator and rotor structure disclosed above. In the magnetic levitation stator-rotor structure, the rotor is connected to the power input member 210, and the stator winding 112 outputs current outwards.

It should be noted that, in the magnetic levitation stator-rotor structure, the rotor may be connected to the power input member 210, but not limited thereto, and in the magnetic levitation stator-rotor structure, the stator may also be connected to the power input member 210, as the case may be.

The magnetic levitation generator 200 comprises a magnetic levitation stator-rotor structure, wherein, the rotor and the stator which are matched with each other are equally divided into n sections, each section of stator section 110 comprises a stator core 111 and a stator winding 112, a plurality of teeth are arranged on the stator core 111 along the circumference of the stator core, each section of rotor section 120 comprises a rotor body 121 and a plurality of permanent magnets 122 arranged on one side of the rotor body 121 close to the stator section 110, and the axial adjacent teeth are arranged in a circumferential dislocation manner or in a circumferential dislocation manner, so that the tooth slot positioning moment of the magnetic levitation stator-rotor structure can be greatly reduced, and compared with a generator adopting a slotless stator-rotor structure, the integral performance and efficiency of the generator can be improved.

As an example, referring to fig. 4, the magnetic levitation generator 200 further includes a vertical shaft 220 and a bearing 230, the stator core 111 is penetratingly disposed on the vertical shaft 220, the bearing 230 connects the vertical shaft 220 and the rotor body 121, the rotor body 121 is located outside the stator to form an external rotor motor, and the rotor is connected with the power input member 210.

The magnetic suspension generator 200 adopts a magnetic suspension stator-rotor structure, so that tooth slot positioning moment of the magnetic suspension stator-rotor structure is greatly reduced, and the overall performance and efficiency of the generator are improved. On the basis, when the magnetic levitation generator 200 is installed in the vertical direction, not only can the tooth slot positioning moment of the magnetic levitation stator and rotor structure be reduced, but also axial magnetic levitation can be realized, the working condition of the bearing 230 is improved, the bearing 230 can not bear axial force, and the performance of the magnetic levitation generator 200 is improved.

Referring to fig. 5, the present utility model also provides a magnetic levitation wind power generator system including the magnetic levitation power generator 200 disclosed above. Specifically, the magnetic levitation wind power generator system includes a fan blade 240, and the power input member 210 includes the fan blade 240, which is connected to the rotor body 121.

The magnetic suspension wind power generator system comprises a magnetic suspension power generator 200, the magnetic suspension power generator 200 is installed in the vertical direction, a rotor and a stator jointly define a magnetic suspension bearing capable of providing axial force, axial magnetic suspension can be achieved, working conditions of the bearing 230 are improved, the bearing 230 can not bear the axial force, and meanwhile, tooth slot positioning moment of a magnetic suspension stator-rotor structure is greatly reduced through circumferentially dislocating the axially adjacent tooth parts or circumferentially dislocating the axially adjacent tooth parts, the overall performance of the magnetic suspension wind power generator system is improved, and breeze starting can be achieved.

Reference herein to the rotor segment 120 being axially segmented means that it is axially segmented along the vertical shaft 220 when the vertical shaft 220 is vertically disposed. Thus, for each axial segment, the permanent magnet segment itself may constitute a magnetic field for generating electricity or for rotating the motor, and thus each permanent magnet segment itself may be an aggregate of a plurality of permanent magnet segments arranged in the circumferential direction of the vertical shaft 220. The axial segments referred to in the present utility model or the utility model are considered to be axially segmented along the vertical shaft 220 and do not affect or interfere with the manner in which the individual permanent magnet axial segments themselves are provided as carriers for the magnetic field, i.e. the individual permanent magnet axial segments themselves may be conventionally employed to effect the fixing of the permanent magnet segments.

The terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and the like are to be construed broadly, and may be fixedly attached, detachably attached, or integrally formed, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present specification, reference to the terms "some embodiments," "exemplary," and the like, means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present utility model have been shown and described, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives and variations may be made in the above embodiments by those skilled in the art within the scope of the utility model, which is therefore intended to be covered by the appended claims and their equivalents.

Claims

1. The utility model provides a magnetic suspension stator-rotor structure which characterized in that includes:

2. The magnetic levitation stator-rotor structure of claim 1, wherein the rotor body is sleeved outside the stator core, the tooth portion and the winding groove are arranged on an outer cylindrical surface of the stator core, the permanent magnets are arranged on an inner cylindrical surface of the rotor body, the permanent magnets axially adjacent to each other are staggered in a clockwise or anticlockwise direction along the circumferential direction, and the stator winding comprises a fractional-slot concentrated winding.

3. The magnetic levitation stator-rotor structure of claim 1, wherein the axial length of the stator core and the axial length of the permanent magnet are equal, the n stator segments and the n rotor segments are each disposed along an axial interval of a preset axial distance, the preset axial distance is smaller than a multiple of a radial magnetic gap between the stator and the rotor, and the multiple is smaller than or equal to 2.

4. A magnetic levitation stator-rotor structure according to claim 3, wherein the stator segments and the rotor segments have a misalignment offset in an axial direction when the stator and the rotor are nested and coaxially mounted, the misalignment offset being a preset multiple of the preset axial distance, the preset multiple being less than 1, the preset axial distance being less than a multiple of the axial length, the multiple being 5-10.

5. The magnetic levitation stator and rotor structure of claim 1, wherein when the n-segment stator segments and the n-segment rotor segments are nested together, the permanent magnets axially adjacent to each other are sequentially staggered by 360 °/(PZn) along a circumferential clockwise direction or a counterclockwise direction, wherein P is a pole pair number and Z is a slot number of the stator core; or, the axially adjacent tooth parts are sequentially staggered by 360 °/(PZn) along the circumferential direction clockwise or anticlockwise direction, wherein P is the number of magnetic pole pairs, and Z is the number of slots of the stator core.

6. A magnetic levitation stator and rotor structure as defined in claim 1, wherein each of said rotor segments comprises a plurality of permanent magnets vertically spaced apart at the same axial location along the circumferential direction of said rotor body to form a segment of said rotor segments;

7. A magnetic levitation motor, comprising:

a magnetic levitation stator and rotor structure according to any one of claims 1 to 6;

8. A magnetic levitation generator, comprising:

9. The magnetic levitation generator of claim 8, further comprising a vertical shaft and a bearing, wherein the stator core is disposed on the vertical shaft in a penetrating manner, wherein the bearing connects the vertical shaft and the rotor body, wherein the rotor body is disposed outside the stator to form an external rotor motor, and wherein the rotor is connected to the power input member.

10. A magnetic levitation wind power generator system, comprising:

a magnetic levitation generator according to claim 8 or 9;