CN110556995A - Novel high-power-density claw pole permanent magnet motor - Google Patents
Novel high-power-density claw pole permanent magnet motor Download PDFInfo
- Publication number
- CN110556995A CN110556995A CN201910980494.7A CN201910980494A CN110556995A CN 110556995 A CN110556995 A CN 110556995A CN 201910980494 A CN201910980494 A CN 201910980494A CN 110556995 A CN110556995 A CN 110556995A
- Authority
- CN
- China
- Prior art keywords
- claw
- motor
- stator
- pole
- yoke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 210000000078 claw Anatomy 0.000 title claims abstract description 109
- 238000004804 winding Methods 0.000 claims abstract description 40
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 10
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 4
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 4
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 230000004323 axial length Effects 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910000859 α-Fe Inorganic materials 0.000 claims description 3
- 238000013461 design Methods 0.000 description 10
- 230000004907 flux Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000006872 improvement Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 239000008358 core component Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005415 magnetization Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
- H02K21/145—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures having an annular armature coil
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention relates to a novel high-power-density claw-pole permanent magnet motor which consists of a plurality of claw-pole motor modules, wherein two adjacent claw-pole motor modules are deviated by a specific angle along the axial side; the special-shaped armature winding adopts a global annular winding structure, and is S-shaped in the circumferential direction; the stator core is provided with an annular stator yoke, a plurality of yoke walls are distributed on the front end face and the rear end face of the annular circumference of the stator yoke in a staggered manner, and the plurality of yoke walls are uniformly distributed on the end face of the stator yoke where the plurality of yoke walls are located along the circumferential direction; each yoke wall is connected with a claw pole, and claw parts of adjacent front claw poles and rear claw poles are opposite; a stator cavity for accommodating the special-shaped armature winding is formed by the plurality of claw poles and the stator yoke in a surrounding manner; and a plurality of permanent magnets are uniformly distributed on the side surface of the ring of the rotor core adjacent to the claw pole along the circumferential direction. The weight of the machine body can be reduced on the premise of ensuring the reliability of the machine body.
Description
Technical Field
The invention relates to the technical field of transverse flux permanent magnet motors, in particular to a novel high-power-density claw pole permanent magnet motor.
Background
A transverse flux permanent magnet motor is a new motor that has been developed in recent years, and has a higher power density in the case where both the axial length and the radial length are relatively large, compared to an axial flux motor and a radial flux motor. The claw-pole permanent magnet motor is a special case of a transverse flux motor, is widely applied to various fields, such as the field of automobile industry and the field of aerospace, and has better performance because the claw-pole permanent magnet motor better utilizes a space three-dimensional magnetic field compared with the traditional motor. And with the development of novel materials and manufacturing processes, the claw pole motor is easy to manufacture, the manufacturing cost is continuously reduced, and the operation reliability is improved.
However, the conventional claw-pole motor is not perfect in structure, and the conventional claw-pole motor mostly adopts a linear annular winding structure, so that the utilization rate of a cavity of a stator slot is low, the space of the claw-pole motor is not fully utilized, and the performance of the claw-pole motor has a further enhanced space. In the aspect of a stator structure, a stator core structure of a traditional claw-pole motor is not complete enough, and when the claw-pole motor is used in a partial field (such as the situation that the weight and the cost of the motor are required), the problems of heavy weight, high cost and the like can be caused, and the incomplete stator structure can also cause large iron loss and is not easy to provide higher power.
Therefore, it is an important issue to solve the problems of heavy weight, high cost and low efficiency while optimizing the performance of the claw-pole motor.
Disclosure of Invention
The invention aims to provide a novel claw pole permanent magnet motor with high power density, which aims to solve the technical problems in the background technology, improve the power density and the efficiency of the claw pole permanent magnet motor and reduce the weight of a machine body on the premise of ensuring the reliability of the claw pole permanent magnet motor.
In order to achieve the purpose, the invention adopts the following technical scheme:
A novel high-power-density claw-pole permanent magnet motor is composed of a plurality of claw-pole motor modules, wherein two adjacent claw-pole motor modules are offset by a specific angle along the axial side, and each claw-pole motor module is of a single-stator and single-rotor structure and comprises a stator core with front and rear claw poles, a special-shaped armature winding, a permanent magnet and a rotor core; the stator iron core and the special-shaped armature winding jointly form a stator, and the stator is characterized in that:
The special-shaped armature winding adopts a global annular winding structure, is S-shaped in the circumferential direction and is annular as a whole; the stator core is provided with an annular stator yoke, a plurality of yoke walls are distributed on the front end face and the rear end face of the annular circumference of the stator yoke in a staggered manner, and the plurality of yoke walls are uniformly distributed on the end face of the stator yoke where the plurality of yoke walls are located along the circumferential direction; each yoke wall is connected with a claw pole, and claw parts of adjacent front claw poles and rear claw poles are opposite; a stator cavity for accommodating the special-shaped armature winding is formed by the plurality of claw poles and the stator yoke in a surrounding manner;
A plurality of permanent magnets are uniformly distributed on the side surface of the ring of the rotor core adjacent to the claw pole along the circumferential direction; the permanent magnets are magnetized along the circumferential direction of the motor, the magnetizing directions of the adjacent permanent magnets are opposite, the number of the permanent magnets is the same as that of claw poles on the stator iron core, and the permanent magnets and the stator iron core are opposite in position.
And grooves are formed in the stator yokes between two adjacent yoke walls on the stator core, and the grooves in the front end face are opposite to the claw poles in the rear end face. The shape of the groove may be semicircular, semi-elliptical, polygonal (rectangular, trapezoidal) but is not limited to the above type.
The novel high-power-density claw-pole permanent magnet motor is an inner rotor motor or an outer rotor motor, when the novel high-power-density claw-pole permanent magnet motor is an inner rotor motor, the inner diameter of a rotor core is fixed with a motor shaft, a plurality of permanent magnets are uniformly distributed on the circumferential side surface of the outer diameter, and a stator core is sleeved on the outer diameter of the rotor core; when the motor is an outer rotor motor, a plurality of permanent magnets are uniformly distributed on the circumferential side surface of the inner diameter of a rotor core and sleeved on a stator core, a through hole is formed in the center of the stator core and used for axial positioning when a plurality of claw pole motor modules are installed, and the outer diameter of the rotor core is fixed with a motor shaft.
The permanent magnet is arc trapezoid, the length of the permanent magnet is consistent with the axial length of the rotor core, and the length of the permanent magnet is larger than the area of the claw part of the claw pole.
The stator core comprises two identical annular stator yokes, a plurality of yoke walls are uniformly arranged on the outer end face of each annular stator yoke, the ends, without the yoke walls, of the two identical annular stator yokes are fixed together, and the yoke walls on the annular stator yokes are arranged in a staggered mode after the two identical annular stator yokes are fixed.
Compared with the prior art, the invention has the beneficial effects that:
a) The armature winding is of an S-shaped special structure, so that the armature winding is more suitable for the structure of the stator core of the claw-pole permanent magnet motor, the utilization rate of the winding slot of the stator core can be better improved, the slot fullness rate of the claw-pole permanent magnet motor is improved, and higher input current is obtained under the same current density, so that the torque density and the efficiency of the claw-pole motor are improved.
b) Because this motor structure adopts the modularized design, the specific angle that staggers by a plurality of claw utmost point motor module is placed by the motor promptly, and along the axial and constitute, every claw utmost point motor module structure is the same, only needs the same structure module of processing when manufacturing, greatly reduced production degree of difficulty, relatively independent between every claw utmost point motor module moreover, when certain module trouble, can independently maintain, the fault-tolerant ability is strong, has reduced and has maintained the degree of difficulty.
c) the stator yoke adopts an integral annular structure, the mechanical strength is high, meanwhile, as the groove is arranged on the stator yoke between two adjacent claw poles on the same end surface, the integral weight of the motor is effectively reduced under the condition of not influencing the stability and the performance of the motor, the manufacturing material is saved, the weight of the stator structure is reduced by more than 30 percent, the application occasion of the motor is expanded, and the heat dissipation is facilitated.
d) Because the invention belongs to a transverse flux permanent magnet motor, the stator phases are not coupled, the analysis can be independently carried out, the fault-tolerant performance is improved, the defect that the electromagnetic load is mutually restrained due to the limitation of a geometric structure in the motor design is eliminated theoretically, and the torque density of the motor is effectively improved.
the invention has the remarkable advantages that:
The invention fully improves the defects of the common claw pole permanent magnet motor, and the advantages of the claw pole motor can be further embodied by adopting the S-shaped curve armature winding, the permanent magnet position arrangement and the groove arrangement, thereby greatly improving the torque density and the efficiency of the claw pole motor, greatly reducing the weight of the claw pole motor and being more flexibly applied to the fields of automobile industry, aerospace and the like.
The motor structure is not limited to be applied to an inner rotor motor, and is also applicable to an outer rotor motor.
Drawings
Fig. 1 is a schematic perspective view of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 2 is a rear view of a single claw pole motor module of an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 3 is a left side view of a single claw pole motor module of an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 4 is a schematic perspective view of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 5 is a schematic diagram of a special-shaped armature winding of an embodiment of the novel high power density claw pole permanent magnet motor of the invention.
fig. 6 is a left side view of a special-shaped armature winding of an embodiment of the novel high power density claw pole permanent magnet motor of the invention.
fig. 7 is a perspective view of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 8 is a schematic structural diagram of a stator core of a single claw-pole motor module according to an embodiment of the novel high power density claw-pole permanent magnet motor of the present invention.
Fig. 9 is a schematic view of an internal magnetic circuit of a claw-pole stator core of the novel high-power-density claw-pole permanent magnet motor according to an embodiment of the present invention.
Fig. 10 is a schematic structural view of a stator core of a single claw-pole motor module according to an embodiment of the novel high power density claw-pole permanent magnet motor of the present invention.
Fig. 11 is a schematic view of a stator core component of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 12 is a schematic perspective view of a claw-pole motor according to an embodiment of the novel high-power-density claw-pole permanent magnet motor of the present invention.
Fig. 13 is a schematic perspective view of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 14 is a left side view of a single claw pole motor module of an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 15 is a schematic view of a stator core component of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 16 is a schematic perspective view of a single claw pole motor module according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 17 is a rear perspective view of a single claw pole motor module of an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 18 is a schematic perspective view of a permanent magnet according to an embodiment of the novel high power density claw pole permanent magnet motor of the present invention.
Fig. 19 is a power factor graph of an embodiment of the novel high power density claw pole permanent magnet machine of the present invention.
Fig. 20 is a torque curve diagram of an embodiment of the novel high power density claw pole permanent magnet machine of the present invention.
Fig. 21 is a flux linkage graph of an embodiment of the novel high power density claw pole permanent magnet machine of the present invention.
1-a stator core; 2-special-shaped armature winding; 3-a rotor core; 4-a permanent magnet; 5-a stator yoke; 6-claw pole; 7-cavity.
Detailed Description
The present invention will be further explained by way of examples with reference to the accompanying drawings, which are not intended to limit the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "central," "axial," "lateral," "radial," "length," "width," "upper," "lower," "front," "rear," and the like are used in the orientations and positional relationships indicated in the drawings for the purpose of convenience and simplicity of description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integral to; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The novel high-power-density claw-pole permanent magnet motor is composed of a plurality of single-phase claw-pole motor modules, adjacent claw-pole motor modules are axially offset by a specific angle, and each claw-pole motor module is of a single-stator single-rotor structure; the permanent magnet motor comprises a rotor iron core 3, a permanent magnet 4, a stator iron core 1 and a special-shaped armature winding 2; the stator iron core and the special-shaped armature winding jointly form a stator,
The special-shaped armature winding adopts a global annular winding structure, is S-shaped in the circumferential direction and is annular as a whole; the stator core is provided with an annular stator yoke, a plurality of yoke walls are distributed on the front end face and the rear end face of the annular circumference of the stator yoke in a staggered manner, and the plurality of yoke walls are uniformly distributed on the end face of the stator yoke where the plurality of yoke walls are located along the circumferential direction; each yoke wall is connected with a claw pole, and claw parts of adjacent front claw poles and rear claw poles are opposite; a stator cavity for accommodating the special-shaped armature winding is formed by the plurality of claw poles and the stator yoke in a surrounding manner;
A plurality of permanent magnets are uniformly distributed on the side surface of the ring of the rotor core adjacent to the claw pole along the circumferential direction; the permanent magnets are magnetized along the circumferential direction of the motor, the magnetizing directions of the adjacent permanent magnets are opposite, the number of the permanent magnets is the same as that of claw poles on the stator iron core, and the permanent magnets and the stator iron core are opposite in position.
In the invention, the stator yoke between two adjacent yoke walls on the stator core is provided with a groove, and the groove positioned on the front end surface is opposite to the claw pole positioned on the rear end surface. The shape of the groove may be semicircular, semi-elliptical, polygonal (rectangular, trapezoidal) but is not limited to the above type. The groove design on the stator yoke on the stator part greatly reduces the weight of the motor and saves materials on the premise of not influencing the performance and stability of the motor.
After the novel high-power-density claw-pole permanent magnet motor is optimized and improved in the aspects of the stator core structure and the special-shaped armature winding, the novel high-power-density claw-pole permanent magnet motor shows obvious improvement in the power factor (see fig. 19) compared with the stator core structure and the special-shaped armature winding before improvement, and also shows obvious improvement in the average torque (see fig. 20) compared with the design before improvement.
The rotor iron core is made of silicon steel sheets or soft magnetic composite materials, the rotor is simple in structure, and the rotor iron core is circular (see figure 1).
The novel high-power-density claw pole permanent magnet motor can be formed by nesting a plurality of single-phase claw pole motor modules in multiple layers along the axial direction and offsetting by a specific angle (see fig. 12). the offset angle of each claw pole motor module is different according to different pole pair numbers and different phase numbers, so that a symmetrical running state can be formed (the torque of the single-phase claw pole motor modules is not stable, so that the torque is stable because a plurality of single-phase claw pole motor modules are required to run symmetrically), the pole pair number refers to the pole number of a rotor, the phase number refers to the number of axially arranged modules, and the offset angle is 360 DEG/N P m, wherein N p is the pole pair number, and m is the phase number.
The permanent magnet is made of ferrite materials, neodymium iron boron materials or other permanent magnet materials.
The working principle and the process of the claw pole permanent magnet motor are as follows: when the motor runs, the stator is static, and the rotor rotates along the axial direction. Magnetic force lines are emitted along the N pole of the permanent magnet, penetrate through the air gap and the claw poles, enter the arc connecting section of the adjacent stator yoke, penetrate through the adjacent claw poles, penetrate through the air gap and enter the S pole of the permanent magnet (see figure 9), and the motor converts electric energy into mechanical energy to do work due to the fact that the magnetic circuit passes through the annular winding which is electrified with variable current.
The stator core is made of SMC stator core modules, and the SMC stator core modules can be customized by manufacturers and can also be pressed by a powder metallurgy manufacturing process or manufactured by a wire cutting method.
The stator core (see fig. 10) of the present invention includes two identical annular stator yokes, one ends of which having no yoke walls are fixed together, and the yoke walls of each of the annular stator yokes are arranged in a staggered manner after the fixation. Two identical annular stator yokes (see fig. 11) are fastened together in a manner that mainly comprises gluing, or anchoring, clamping. When the stator core is manufactured, claw poles are arranged on one surface of the stator core, and then the stator core of the single-phase claw pole motor module is assembled by two stator cores which are oppositely arranged as shown in the figure. When the S-curve special-shaped armature winding is embedded, the utilization of space positions and the result of optimized design are mainly considered, so that the slot filling rate, the torque density and the efficiency are improved.
example 1
The novel high-power-density claw-pole permanent magnet motor is an inner rotor motor and is composed of a plurality of claw-pole motor modules, two adjacent claw-pole motor modules are offset by a specific angle along the axial direction, and each claw-pole motor module is of a single-stator and single-rotor structure and comprises a rotor core, a stator core, a permanent magnet and a special-shaped armature winding (see fig. 4).
The stator comprises two parts, namely a stator core (see figure 8) and a special-shaped armature winding (see figure 5), the special-shaped armature winding is arranged in a cavity of the stator core in an S-shaped curve shape, the stator core is provided with a circular stator yoke, a plurality of yoke walls are distributed on the front end surface and the rear end surface of the circular circumference of the stator yoke in a staggered manner, and the plurality of yoke walls are uniformly distributed on the end surface of the stator yoke where the yoke walls are located along the circumferential direction; each yoke wall is connected with a claw pole, and claw parts of adjacent front claw poles and rear claw poles are opposite; a stator cavity 7 for accommodating the special-shaped armature winding is formed by enclosing the plurality of claw poles and the stator yoke;
the permanent magnets are alternately arranged on the rotor core along the circumferential direction, the number of the permanent magnets is the same as that of the claw poles on the stator core, and the arrangement of the positions of the permanent magnets on the rotor core also corresponds to the positions of the claw poles on the stator core.
On the stator iron core, trapezoidal grooves are formed in the stator yoke arc sections between two adjacent yoke walls, and the positions of the trapezoidal grooves are opposite to the claw poles of the opposite surfaces along the axial direction.
The permanent magnets are magnetized along the circumferential direction of the motor, and the magnetizing directions of the adjacent permanent magnets are opposite.
The permanent magnet is made of ferrite or neodymium iron boron materials, and the rotor iron core is made of silicon steel sheets and is annular.
Basic parameters of novel high-power-density claw pole permanent magnet motor structure
In order to highlight the advantages of the application, the motor of the embodiment is subjected to corresponding performance test, the electromagnetic scheme of the motor is determined by adopting a common design method of the motor and a field-circuit combination method according to the design requirements of the motor, and the motor is modeled and analyzed by using a motor magnetic circuit method design module RMxprt, so that the optimal design of the motor magnetic circuit is completed. Finite element simulation analysis is respectively carried out on the static field and the transient field of the motor by using an electromagnetic field finite element module Maxwell2D, and a prototype curve in FIG. 19 represents a power factor curve after the S-shaped winding is changed into a common annular winding according to the motor structure and relevant parameters of the embodiment. The curvetype curve in fig. 19 represents the power factor curve of the motor of the present embodiment, and it can be seen from fig. 19 that the present application represents a significant improvement in power factor. The average torque changes of the two motors are considered at the same time, fig. 20 is a comparison graph of the average torque changes of the two motors, and it can be seen from fig. 20 that the average torque of the motor of the embodiment is due to the common annular winding motor form.
the curvetype curve in fig. 21 represents a flux linkage curve of the motor body performance and stability of the motor of this embodiment (i.e., having a trapezoidal groove and an S-shaped winding), and the prototype curve in fig. 21 represents a flux linkage curve of the motor body performance and stability of the S-shaped winding without a trapezoidal groove, which is set according to the motor structure of this embodiment, and it can be seen from fig. 21 that the influence of the groove design on the motor body performance and stability is small, and the reduction of the motor weight can be realized on the premise of ensuring the motor performance by setting the groove.
Example 2
The structure of each part of the novel high-power-density claw-pole permanent magnet motor is the same as that of embodiment 1, except that the shape of the arc-shaped groove in the motor is arc-shaped (see fig. 15).
Example 3
The novel high-power-density claw-pole permanent magnet motor is an outer rotor motor (see fig. 16-17), and the overall structure is the same as that of the motor in embodiment 1, except that the inner diameter of the rotor is larger than the outer diameter of the stator core, and the center of the stator core is provided with a shaft hole for installing and fixing a plurality of claw-pole motor modules. The stator core is provided with a stator yoke, the stator yoke is annular and thick in radial thickness, a plurality of yoke walls are uniformly distributed on the front end face and the rear end face of the stator yoke, the yoke walls on the front end face and the yoke walls on the rear end face are arranged in a staggered mode, the yoke walls are radially far away from the annular center of the stator yoke, claw poles are fixed on each yoke wall, claw parts of two adjacent claw poles on the front end face and the rear end face are oppositely arranged, namely, the claw parts face a stator cavity, and an S-shaped curve special-shaped armature winding is arranged in the stator cavity of the stator core. The radial thickness of the rotor is thin, a plurality of permanent magnets are uniformly distributed in the inner diameter wall surface of the rotor along the circumferential direction, the area of each permanent magnet is larger than that of each claw pole, and the total number of the claw poles on the front end surface and the rear end surface is consistent with that of the permanent magnets on the rotor core. The motor shaft is arranged on the outer diameter round side surface of the rotor core.
the rotor core is made of soft magnetic composite materials.
The permanent magnet is made of neodymium iron boron materials, the magnetization is carried out along the circumferential direction of the motor, and the magnetization directions of the adjacent permanent magnets are opposite.
while the invention has been described in conjunction with specific embodiments thereof, it will be understood that it is capable of further modifications. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the invention and including such departures from the present disclosure as come within known or customary practice within the art to which the invention pertains and as may be applied to the essential features hereinbefore set forth.
As the present invention may be embodied in several forms without departing from the spirit of the essential characteristics of the invention, it should also be understood that the above-described embodiments are not to limit the present invention unless otherwise specified, but rather should be construed broadly within the spirit and scope of the invention as defined in the appended claims. The described embodiments are to be considered in all respects only as illustrative and not restrictive.
various modifications and equivalent arrangements are intended to be included within the spirit and scope of the invention and appended claims. The detailed description is, therefore, to be understood as being a schematic illustration of various ways in which the principles of the invention may be practiced. In the claims that follow, means-plus-function clauses are intended to cover the structures described herein as performing the defined function and not only structural equivalents but also equivalent structures.
Nothing in this specification is said to apply to the prior art.
Claims (9)
1. A novel high-power-density claw-pole permanent magnet motor is composed of a plurality of claw-pole motor modules, wherein two adjacent claw-pole motor modules are offset by a specific angle along the axial side, and each claw-pole motor module is of a single-stator and single-rotor structure and comprises a stator core with front and rear claw poles, a special-shaped armature winding, a permanent magnet and a rotor core; the stator iron core and the special-shaped armature winding jointly form a stator, and the stator is characterized in that:
The special-shaped armature winding adopts a global annular winding structure, is S-shaped in the circumferential direction and is annular as a whole; the stator core is provided with an annular stator yoke, a plurality of yoke walls are distributed on the front end face and the rear end face of the annular circumference of the stator yoke in a staggered manner, and the plurality of yoke walls are uniformly distributed on the end face of the stator yoke where the plurality of yoke walls are located along the circumferential direction; each yoke wall is connected with a claw pole, and claw parts of adjacent front claw poles and rear claw poles are opposite; a stator cavity for accommodating the special-shaped armature winding is formed by the plurality of claw poles and the stator yoke in a surrounding manner;
A plurality of permanent magnets are uniformly distributed on the side surface of the ring of the rotor core adjacent to the claw pole along the circumferential direction; the permanent magnets are magnetized along the circumferential direction of the motor, the magnetizing directions of the adjacent permanent magnets are opposite, the number of the permanent magnets is the same as that of claw poles on the stator iron core, and the permanent magnets and the stator iron core are opposite in position.
2. A machine as claimed in claim 1, characterized in that the stator core is provided with recesses in the stator yoke between two adjacent yoke walls, the recesses in the front end face being situated opposite the claw poles in the rear end face.
3. The machine of claim 2, wherein the shape of the groove is semi-circular, semi-elliptical or polygonal.
4. The motor of claim 1, wherein the novel high power density claw pole permanent magnet motor is an inner rotor motor or an outer rotor motor, when the novel high power density claw pole permanent magnet motor is an inner rotor motor, the inner diameter of a rotor core is fixed with a motor shaft, a plurality of permanent magnets are uniformly arranged on the circumferential side surface of the outer diameter, and a stator core is sleeved on the outer diameter of the rotor core; when the motor is an outer rotor motor, a plurality of permanent magnets are uniformly distributed on the circumferential side surface of the inner diameter of a rotor core and sleeved on a stator core, a through hole is formed in the center of the stator core and used for axial positioning when a plurality of claw pole motor modules are installed, and the outer diameter of the rotor core is fixed with a motor shaft.
5. The motor according to claim 1, wherein the permanent magnet has a circular trapezoid shape, and a length of the permanent magnet is identical to an axial length of the rotor core and is larger than an area of the claw portion of the claw pole.
6. The electric motor of claim 1, wherein the stator core comprises two identical annular stator yokes, each having a plurality of yoke walls uniformly disposed on an outer end surface thereof, wherein the ends of the two identical annular stator yokes without the yoke walls are fixed together, and wherein the yoke walls on each of the annular stator yokes are staggered after the fixing.
7. An electric machine according to claim 1, characterized in that the rotor core is made of silicon steel sheet or soft magnetic composite material.
8. The machine of claim 1 wherein the angular offset between the individual modules of each claw pole machine is 360 °/N p m, where N p is the pole pair number and m is the phase number.
9. The motor of claim 1, wherein the permanent magnet is made of ferrite material or neodymium iron boron material; the stator core is made of SMC stator core modules.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980494.7A CN110556995A (en) | 2019-10-16 | 2019-10-16 | Novel high-power-density claw pole permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980494.7A CN110556995A (en) | 2019-10-16 | 2019-10-16 | Novel high-power-density claw pole permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110556995A true CN110556995A (en) | 2019-12-10 |
Family
ID=68742944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910980494.7A Pending CN110556995A (en) | 2019-10-16 | 2019-10-16 | Novel high-power-density claw pole permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110556995A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315270A (en) * | 2021-06-02 | 2021-08-27 | 河北工业大学 | Claw-pole motor stator core and motor assembly applying same |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29623132U1 (en) * | 1996-06-20 | 1997-11-06 | Bosch Gmbh Robert | DC motor |
| CN1848605A (en) * | 2005-03-18 | 2006-10-18 | 株式会社日立产机*** | Multiple phase claw pole type motor |
| CN101213729A (en) * | 2005-04-28 | 2008-07-02 | 株式会社电装 | Motor and its control device |
| CN101911432A (en) * | 2008-03-12 | 2010-12-08 | 株式会社日立制作所 | Stator core for dynamo-electric machine and manufacturing method therefor |
| CN107836070A (en) * | 2015-05-29 | 2018-03-23 | 法国高勒特技公司 | Solenoid armature and its manufacture method for electric rotating machine |
| CN210518073U (en) * | 2019-10-16 | 2020-05-12 | 河北工业大学 | Novel high-power-density claw pole permanent magnet motor |
-
2019
- 2019-10-16 CN CN201910980494.7A patent/CN110556995A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE29623132U1 (en) * | 1996-06-20 | 1997-11-06 | Bosch Gmbh Robert | DC motor |
| CN1848605A (en) * | 2005-03-18 | 2006-10-18 | 株式会社日立产机*** | Multiple phase claw pole type motor |
| CN101213729A (en) * | 2005-04-28 | 2008-07-02 | 株式会社电装 | Motor and its control device |
| CN101911432A (en) * | 2008-03-12 | 2010-12-08 | 株式会社日立制作所 | Stator core for dynamo-electric machine and manufacturing method therefor |
| CN107836070A (en) * | 2015-05-29 | 2018-03-23 | 法国高勒特技公司 | Solenoid armature and its manufacture method for electric rotating machine |
| CN210518073U (en) * | 2019-10-16 | 2020-05-12 | 河北工业大学 | Novel high-power-density claw pole permanent magnet motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113315270A (en) * | 2021-06-02 | 2021-08-27 | 河北工业大学 | Claw-pole motor stator core and motor assembly applying same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20060119192A1 (en) | Electrodynamic apparatus and method of manufacture | |
| US20130221789A1 (en) | Rotor for modulated pole machine | |
| CN112564346B (en) | High-torque-density axial magnetic field permanent magnet motor rotor structure and motor thereof | |
| CN110504811B (en) | Dislocation birotor magnetic flux switching type permanent magnet motor and power generation equipment | |
| CN103715945A (en) | 12/14 bearingless permanent magnet biased switched reluctance motor | |
| Zhang et al. | Mechanical construction and analysis of an axial flux segmented armature torus machine | |
| CN110838779B (en) | Mixed excitation wound rotor and mixed excitation wound synchronous motor | |
| CN105119454A (en) | Halbach array permanent magnet DC brushless motor | |
| CN210518073U (en) | Novel high-power-density claw pole permanent magnet motor | |
| CN109004777A (en) | A kind of flux-reversal claw-pole motor component | |
| JPWO2020194390A1 (en) | Rotating machine | |
| CN111509883A (en) | Rotor assembly and axial magnetic field motor | |
| CN110556995A (en) | Novel high-power-density claw pole permanent magnet motor | |
| CN106208431B (en) | transverse flux motor iron core | |
| CN117081280A (en) | Stator assembly and motor | |
| CN112821591B (en) | Core component of modularized claw pole permanent magnet motor | |
| CN214255894U (en) | Core component of modularized claw pole permanent magnet motor | |
| CN103840586A (en) | Permanent magnetic outer rotor hub motor | |
| JP2008187863A (en) | Axial gap rotary electric machine and compressor | |
| US20170229934A1 (en) | Interior permanent magnet electric machine | |
| CN110797993A (en) | Stator yoke segmented block type motor | |
| CN102306996A (en) | Cylindrical linear motor | |
| CN219351382U (en) | Rotor structure and motor | |
| JP2014082836A (en) | Rotor and rotary electric machine having the same | |
| WO2011045842A1 (en) | Permanent magnet dynamo-electric machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |