CN114172333B - Disc type permanent magnet synchronous motor with iron core and separated magnetic field modulation structure - Google Patents
Disc type permanent magnet synchronous motor with iron core and separated magnetic field modulation structure Download PDFInfo
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- CN114172333B CN114172333B CN202111549886.1A CN202111549886A CN114172333B CN 114172333 B CN114172333 B CN 114172333B CN 202111549886 A CN202111549886 A CN 202111549886A CN 114172333 B CN114172333 B CN 114172333B
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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
- 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
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/02—Details
- H02K21/021—Means for mechanical adjustment of the excitation flux
- H02K21/022—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator
- H02K21/025—Means for mechanical adjustment of the excitation flux by modifying the relative position between field and armature, e.g. between rotor and stator by varying the thickness of the air gap between field and armature
- H02K21/026—Axial air gap machines
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- 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
- H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos
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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
- H02K2201/03—Machines characterised by aspects of the air-gap between rotor and stator
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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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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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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 provides a disc type permanent magnet synchronous motor with an iron core and a separated magnetic field modulation structure, which comprises an upper end cover, an upper rotor disc, a stator winding disc, a lower rotor disc and a lower end cover which are sequentially arranged on a motor rotating shaft in a penetrating manner. The upper rotor disk and the lower rotor disk have the same structure, and a plurality of pairs of fan-shaped N, S pole permanent magnets which are alternately arranged are tightly fixed on the inner wall of the upper rotor disk and the lower rotor disk. The stator winding disk is composed of an up-regulating magnetic layer, a stator winding layer and a down-regulating magnetic layer; the stator winding layer is a non-overlapping winding layer and consists of a plurality of flat fan-shaped stator cores and stator coils wound on the stator cores, and the stator cores are radially arranged at equal intervals along the circumference; the upper magnetic layer and the lower magnetic layer have the same structure and are formed by arranging a plurality of flat fan-shaped magnetic regulating blocks at equal intervals in a staggered way with the stator core and radially along the circumference; the magnetic regulating blocks forming the upper magnetic regulating layer and the lower magnetic regulating layer are symmetrically arranged. The invention has the advantages of strong motor air gap field intensity, high torque density and large motor output torque.
Description
Technical Field
The invention relates to a disc type permanent magnet synchronous motor with an iron core, in particular to a disc type permanent magnet synchronous motor with an iron core and a separated magnetic field modulation structure. The invention belongs to the technical field of manufacturing of disc motors.
Background
As shown in fig. 1 and 2, the conventional disc-type permanent magnet synchronous motor with iron core comprises an upper end cover 1, an upper rotor disc 2, a stator winding disc 3, a lower rotor disc 4, a lower end cover 5 and a motor rotating shaft 6; the upper rotor disc 2 is fixed with the upper end cover 1, and the lower rotor disc 4 is fixed with the lower end cover 5; the stator winding disc 3 is located between the upper rotor disc 2 and the lower rotor disc 4; the upper end cover 1, the upper rotor disc 2, the stator winding disc 3, the lower rotor disc 4 and the lower end cover 5 are sequentially arranged on the motor rotating shaft 6 in a penetrating way. N pairs of N, S pole permanent magnets 21 are fixed on the inner wall of the upper rotor disk 2, and the N pole permanent magnets 21 and the S pole permanent magnets 21 are alternately arranged at intervals; similarly, n pairs of N, S pole permanent magnets 41 are fixed to the inner wall of the lower rotor disk 4, and the n and S pole permanent magnets 41 are alternately arranged at intervals. The stator winding disc 3 is arranged between the upper and lower rotor discs and is formed by arranging a plurality of flat fan-shaped stator cores 31 and stator coils 32 wound on the stator cores around the motor shaft 6.
The disc type permanent magnet synchronous motor has the advantages of small volume, compact structure, high power density and the like, is particularly suitable for being applied to the fields of electric automobiles, numerical control machine tools, flywheel energy storage, industrial robots and the like with higher requirements on performance indexes and installation space, however, the disc type permanent magnet synchronous motor also has some disadvantages, such as weaker air gap field strength, large magnetic leakage and more harmonic waves, and cannot meet the requirements of specific occasions on high torque density.
Disclosure of Invention
In view of the foregoing, it is an object of the present invention to provide a disc-type ironcore permanent-magnet synchronous motor with a split-type magnetic field modulation structure. The invention utilizes the harmonic wave part in the air-gap field of the motor to be converted into effective working wave by redesigning the stator winding disc structure of the disc-type permanent magnet synchronous motor with the iron core, thereby improving the effective working magnetic density of the motor and further improving the air-gap field intensity and the torque density of the disc-type permanent magnet synchronous motor with the iron core.
In order to achieve the above purpose, the invention adopts the following technical scheme: a disc type permanent magnet synchronous motor with an iron core and a separated magnetic field modulation structure comprises an upper end cover, an upper rotor disc, a stator winding disc, a lower rotor disc, a lower end cover and a motor rotating shaft; the upper rotor disc is fixed with the upper end cover, and the lower rotor disc is fixed with the lower end cover; the stator winding disks are located between the upper and lower rotor disks; the upper end cover, the upper rotor disc, the stator winding disc, the lower rotor disc and the lower end cover are sequentially arranged on the motor rotating shaft in a penetrating mode, and the motor rotating shaft is characterized in that:
the upper rotor disc and the lower rotor disc have the same structure and are ring-shaped, and a plurality of pairs of fan-shaped N, S pole permanent magnets which are alternately arranged are tightly fixed on the inner wall of the upper rotor disc and the lower rotor disc; the permanent magnets are identical in shape and size;
the permanent magnets fixed on the inner wall of the upper rotor disk and the permanent magnets fixed on the inner wall of the lower rotor disk at the same position have opposite polarities and the magnetizing directions are the same;
the stator winding disc is in a circular ring shape and consists of an up-regulating magnetic layer, a stator winding layer and a down-regulating magnetic layer, wherein the stator winding layer is positioned between the up-regulating magnetic layer and the down-regulating magnetic layer;
the stator winding layer is a non-overlapping winding layer and is annular, and consists of a plurality of flat fan-shaped stator cores and stator coils wound on the stator cores, and the stator cores are radially arranged at equal intervals along the circumference;
the upper magnetic layer and the lower magnetic layer have the same structure and are in a ring shape, and are formed by arranging a plurality of flat fan-shaped magnetic regulating blocks at equal intervals in a staggered manner with the stator core and radially along the circumference;
the magnetic regulating blocks forming the upper magnetic regulating layer and the lower magnetic regulating layer are symmetrically distributed.
Preferably, the number of the magnetic blocks of the up-regulating magnetic layer is the same as that of the magnetic blocks of the down-regulating magnetic layer, and the number of the single-layer magnetic blocks is Z 1 The number of the stator iron cores is Z 2 ，Z 1 +Z 2 =pr+ps; pr is the pole pair number of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor core and the lower rotor core; ps is the pole pair number of the space magnetic field formed after the stator winding coil is electrified.
Preferably, the ratio of the pole pair number Pr of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor disk and the lower rotor disk to the pole pair number Ps of the space magnetic field formed by the stator winding disk after the coils are electrified is 5-10.
Preferably, the radian of the magnetic regulating block is 360 degrees/(Z) 1 +Z 2 ) 0.6-0.8); the thickness of the magnetic regulating block is 1.5-3.0 mm.
Preferably, the air gap thicknesses between the magnetic regulating blocks positioned on the upper surface and the lower surface of the stator core, the stator core and the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk are the same.
Preferably, the outer diameter size and the inner diameter size of the magnetic regulating block, the stator core and the permanent magnet are the same; the outer diameters of the upper rotor core and the lower rotor core are larger than or equal to the outer diameter of the permanent magnet, and the inner diameters of the upper rotor core and the lower rotor core are smaller than or equal to the inner diameter of the permanent magnet.
Preferably, the magnetic regulating blocks, the upper rotor disk, the lower rotor disk and the stator core are made of the same material and are all made of high-saturation magnetic density soft magnetic alloy; the permanent magnet is made of neodymium iron boron.
Compared with the traditional disc type permanent magnet synchronous motor with the iron core, the invention has the following advantages:
1. the motor has strong air gap field intensity and high torque density.
According to the invention, the plurality of magnetic regulating blocks are additionally arranged between the stator iron core and the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk, the upper magnetic regulating blocks and the lower magnetic regulating blocks are staggered with the stator iron core, the space is fully utilized, and part of harmonic waves in the air gap field between the upper rotor disk and the lower rotor disk are converted into effective working waves through the common magnetic field modulation action of the separated magnetic regulating blocks and the stator iron core, so that the effective working density of the disk type permanent magnet synchronous motor with the iron core is greatly improved, the air gap field intensity of the motor is improved, and the torque density and the power density of the motor are further improved, and the output torque of the motor is increased.
2. The motor has large output torque and high motor performance.
Because the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk are closely arranged, compared with the traditional disc type coreless permanent magnet synchronous motor, the pole arc coefficient of the permanent magnets is increased, the output torque of the motor is increased, and the motor performance is high; and the assembly process is simple, and a positioning tool is omitted.
3. The stator coil has low copper consumption and high motor efficiency.
Because the fan-shaped coils forming the stator winding disk are arranged around the motor rotating shaft in a non-overlapping manner, compared with the traditional mode that the coils on the disk-type permanent magnet synchronous motor with the iron core are arranged around the motor rotating shaft in a partially overlapping manner, the length of the coil end is greatly reduced, the resistance is reduced, the copper consumption is reduced, the temperature rise is reduced, the motor efficiency is improved, and the arrangement of each coil and the design of the coil are more flexible.
Drawings
Fig. 1 is a schematic diagram of the internal structure of a conventional disc-type permanent magnet synchronous motor with an iron core;
fig. 2 is a schematic diagram of an exploded structure of upper and lower rotor disks and stator winding disks of a conventional disk-type permanent magnet synchronous motor with an iron core;
fig. 3 is a schematic diagram of the internal structure of the disc-type permanent magnet synchronous motor with the iron core;
fig. 4 is a schematic diagram of an exploded structure of upper and lower rotor disks and stator winding disks of the disk-type permanent magnet synchronous motor with iron cores of the invention.
Detailed Description
The structure and features of the present invention will be described in detail below with reference to the accompanying drawings and examples. It should be noted that various modifications can be made to the embodiments disclosed herein, and thus, the embodiments disclosed in the specification should not be taken as limiting the invention, but merely as exemplifications of embodiments, which are intended to make the features of the invention apparent.
As shown in fig. 3 and 4, the disc-type permanent magnet synchronous motor with the iron core with the separated magnetic field modulation structure disclosed by the invention comprises an upper end cover 7, an upper rotor disc 8, a stator winding disc 9, a lower rotor disc 10, a lower end cover 11 and a motor rotating shaft 12; the upper rotor disk 8 is fixed with the upper end cover 7, and the lower rotor disk 10 is fixed with the lower end cover 11; stator winding disks 9 are located between the upper rotor disk 8 and the lower rotor disk 10; the upper end cover 7, the upper rotor disk 8, the stator winding disk 9, the lower rotor disk 10 and the lower end cover 11 are sequentially arranged on the motor rotating shaft 12 in a penetrating way.
The upper rotor disk 8 is annular, and a plurality of pairs of fan-shaped N, S pole permanent magnets 81 which are alternately arranged are tightly fixed on the inner wall of the upper rotor disk; the lower rotor disk 10 has the same structure as the upper rotor disk 8, the lower rotor disk 10 is also in a ring shape, and a plurality of pairs of fan-shaped N, S pole permanent magnets 101 which are alternately arranged are tightly fixed on the inner wall of the lower rotor disk; the permanent magnets 81 fixed on the inner wall of the upper rotor disk and the permanent magnets 101 fixed on the inner wall of the lower rotor disk are identical in shape and size, the polarities of the permanent magnets 81 and 101 at the same position are opposite, and the magnetizing directions are identical.
The stator winding disk 9 is located between the upper rotor disk 8 and the lower rotor disk 10, is in a ring shape, and is composed of an up-regulating magnetic layer, a stator winding layer and a down-regulating magnetic layer, wherein the stator winding layer is located between the up-regulating magnetic layer and the down-regulating magnetic layer.
The stator winding layer is a non-overlapping winding layer and is annular, and is composed of a plurality of flat fan-shaped stator cores 91 and stator coils 92 wound on the stator cores, the stator cores 91 are radially arranged around the motor rotating shaft at equal intervals along the circumference, and each stator coil 92 is individually wound on the corresponding stator core 91.
The up-regulating magnetic layer is in a ring shape and is positioned on the stator winding layer, and is formed by arranging a plurality of flat sector-shaped magnetic regulating blocks 93 at equal intervals and staggered with the stator core 91 in a radial manner along the circumference.
The down-regulating magnetic layer has the same structure as the up-regulating magnetic layer, is in a ring shape and is positioned below the stator winding layer, and is also formed by a plurality of flat fan-shaped magnetic regulating blocks 93 which are equidistantly arranged and staggered with the stator core 91 and are radially arranged along the circumference.
The magnetic regulating blocks 93 constituting the upper and lower magnetic regulating layers are symmetrically arranged and staggered with the stator core 91.
When the pole pair number of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor disk and the lower rotor disk is Pr and the pole pair number of the space magnetic field formed by the electrified coils of the stator winding disk is Ps, the number Z1 of the single-layer magnetic regulating layer (namely the up magnetic regulating layer and the down magnetic regulating layer) magnetic regulating blocks and the number Z of the stator iron cores are equal to each other 2 The sum is as follows: z is Z 1 +Z 2 ＝Pr+Ps。
In the preferred embodiment of the invention, 20 pieces of N, S permanent magnets are respectively fixed on the inner walls of the upper rotor disk and the lower rotor disk, and the pole pair number Pr of the space magnetic field formed by the 20 pieces of permanent magnets is=10; the stator winding disk has 6 stator cores, namely Z 2 6, winding a stator coil on each stator core, wherein after 6 stator coils are electrified, the pole pair number Ps of the formed space magnetic field is=2; therefore, the number of the magnetic regulating blocks 63 of each layer of magnetic regulating layer is Z1=Pr+Ps-Z 2 ＝10+2-6＝6。
Effective working magnetic density value B for disc type permanent magnet synchronous motor with iron core tot ＝B conv +P×B modu Wherein B is conv B is the main wave magnetic flux density modu For adjustingAnd (3) magnetic flux density is produced, wherein P is the ratio of the pole pair number Pr of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor disk and the lower rotor disk to the pole pair number Ps of the space magnetic field formed by the electrified coils of the stator winding disk, namely the pole ratio. Obviously, the larger the pole ratio P is, the higher the magnetic density is, the stronger the output performance of the motor is, however, the too large pole ratio P can cause too many permanent magnets on the rotor disk, which increases the difficulty of the manufacturing process and the magnetic leakage, and the performance of the motor is not obvious, so the value of the pole ratio P is in the range of 5-10. In the preferred embodiment of the present invention, pr=10, ps=2, and the polar ratio p=5.
In order to improve the output torque of the disk type permanent magnet synchronous motor with iron core, the invention performs finite element analysis and calculation on the radian and thickness of the sector-shaped magnet adjusting block forming the magnet adjusting layer, and discovers that the radian theta of the magnet adjusting block 0 And the number Z of the magnetic regulating blocks 1 And the number Z of the stator iron cores 2 In general, the radian θ of a sector-shaped magnet is adjusted 0 ＝360°/(Z 1 +Z 2 ) 0.6-0.8, and the thickness h=1.5-3.0 mm of the magnetic regulating block. In the preferred embodiment of the present invention, the radian θ of the magnetic regulating block constituting the magnetic regulating layer 0 =20°; thickness h=2 mm.
Through finite element analysis, the relative angle theta between the center line of the magnet adjusting block and the center line of the adjacent stator core 1 And the relative angle θ between the stator plate and the permanent magnets on the inner wall of the rotor core 2 Will affect the output torque of the motor (here, will be θ 2 Defined as the angle between the axis of stator coil of the A-phase stator of the stator disk and the N-pole permanent magnet on the inner wall of the adjacent rotor core), in the preferred embodiment of the invention, the angle is calculated by finite element analysis, theta 1 ＝30°；θ 2 ＝6°。
The air gap thicknesses of the magnetic regulating blocks positioned on the upper surface and the lower surface of the stator core and the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk are the same, and in the preferred embodiment of the invention, the air gap thicknesses are 1mm.
The outer diameter size and the inner diameter size of the permanent magnets fixed on the inner walls of the stator iron core, the upper rotor disk and the lower rotor disk are the same; the outer diameters of the upper rotor disk and the lower rotor disk are larger than or equal to the outer diameters of the permanent magnets, and the inner diameters of the upper rotor disk and the lower rotor disk are smaller than or equal to the inner diameters of the permanent magnets. In the preferred embodiment of the invention, the outer diameter size of the magnet adjusting block, the stator core and the permanent magnet is 85mm, and the inner diameter size is 42mm.
The magnetic regulating blocks, the upper rotor disk, the lower rotor disk and the stator core are made of the same material and are all made of high-saturation magnetically-dense soft magnetic alloy; the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk are the same in size and are made of neodymium iron boron.
The invention adds several magnetic regulating blocks on the upper and lower surfaces of stator core with stator coil, and uses the magnetic regulating blocks on the upper and lower surfaces of stator core and the magnetic field modulation action of stator core to convert part of harmonic wave in the air gap field between permanent magnets fixed on the inner wall of upper and lower rotor disk into effective working wave, i.e. the main pole field whose pole logarithm is Pr produced by permanent magnets fixed on the inner wall of upper and lower rotor disk, further modulates and produces Z 1 +Z 2 -effective working magnetic field of pr=ps. The invention has the advantages that the effective working wave with the pole pair number of Ps is added besides the effect of the main pole magnetic field, the effective working magnetic density of the disc type permanent magnet synchronous motor with the iron core is greatly improved, the air gap magnetic field intensity of the motor is improved, the torque density and the power density of the motor are further improved, and the output torque of the motor is increased.
Experiments prove that the disc-type permanent magnet synchronous motor with the iron core and the traditional structure with the same size (the outer diameter phi 85mm and the inner diameter phi 40 mm) outputs torque of 1.5Nm when the amplitude of the zero-load air gap flux density fundamental wave of the motor is 1.05T and the phase current is 5A through finite element analysis and calculation; the invention has the disk-type iron core permanent magnet synchronous electron with the separated magnetic field modulation structure, the amplitude of the no-load air gap magnetic flux density fundamental wave of the motor is 0.9T, the amplitude of the modulated wave magnetic flux density is 0.08T, the total effective working magnetic flux density amplitude is 0.9T+5 x 0.08=1.3T, the output torque is 1.8Nm when the phase current is 5A, the output torque is 1.2 times that of the traditional structure, and the air gap magnetic field intensity and the torque density of the motor are both obviously improved.
Finally, it should be noted that: the embodiments described above are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (4)
1. A disc type permanent magnet synchronous motor with an iron core and a separated magnetic field modulation structure comprises an upper end cover, an upper rotor disc, a stator winding disc, a lower rotor disc, a lower end cover and a motor rotating shaft; the upper rotor disc is fixed with the upper end cover, and the lower rotor disc is fixed with the lower end cover; the stator winding disks are located between the upper and lower rotor disks; the upper end cover, the upper rotor disc, the stator winding disc, the lower rotor disc and the lower end cover are sequentially arranged on the motor rotating shaft in a penetrating way;
the upper rotor disc and the lower rotor disc have the same structure and are ring-shaped, and a plurality of pairs of fan-shaped N, S pole permanent magnets which are alternately arranged are tightly fixed on the inner wall of the upper rotor disc and the lower rotor disc; the permanent magnets are identical in shape and size; the method is characterized in that:
the permanent magnets fixed on the inner wall of the upper rotor disk and the permanent magnets fixed on the inner wall of the lower rotor disk at the same position have opposite polarities and the magnetizing directions are the same;
the stator winding disc is in a circular ring shape and consists of an up-regulating magnetic layer, a stator winding layer and a down-regulating magnetic layer, wherein the stator winding layer is positioned between the up-regulating magnetic layer and the down-regulating magnetic layer;
the stator winding layer is a non-overlapping winding layer and is annular, and consists of a plurality of flat fan-shaped stator cores and stator coils wound on the stator cores, and the stator cores are radially arranged at equal intervals along the circumference;
the upper magnetic layer and the lower magnetic layer have the same structure and are in a ring shape, and are formed by arranging a plurality of flat fan-shaped magnetic regulating blocks at equal intervals in a staggered manner with the stator core and radially along the circumference;
the magnetic regulating blocks forming the upper magnetic regulating layer and the lower magnetic regulating layer are symmetrically arranged;
the number of the magnetic blocks of the upper magnetic layer is the same as that of the magnetic blocks of the lower magnetic layer, and the number of the single-layer magnetic blocks is Z 1 The number of the stator iron cores is Z 2 ，Z 1 +Z 2 ＝Pr+Ps；
Pr is the pole pair number of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor core and the lower rotor core;
ps is the pole pair number of the space magnetic field formed after the stator winding coil is electrified;
the ratio of the pole pair number Pr of the space magnetic field formed by the permanent magnets on the inner walls of the upper rotor disk and the lower rotor disk to the pole pair number Ps of the space magnetic field formed by the stator winding disk after the coil is electrified is 5-10;
the radian of the magnetic regulating block is 360 degrees/(Z) 1 +Z 2 )*(0.6～0.8)；
The thickness of the magnetic regulating block is 1.5-3.0 mm.
2. The disc-type ironcore permanent-magnet synchronous machine with split-type magnetic field modulation architecture of claim 1, characterized in that: the thickness of the air gap between the magnetic regulating blocks positioned on the upper surface and the lower surface of the stator core, the stator core and the permanent magnets fixed on the inner walls of the upper rotor disk and the lower rotor disk is the same.
3. The disc-type ironcore permanent-magnet synchronous machine with split-type magnetic field modulation architecture of claim 2, characterized in that: the outer diameter sizes and the inner diameter sizes of the magnetic regulating blocks, the stator iron cores and the permanent magnets are the same;
the outer diameters of the upper rotor core and the lower rotor core are larger than or equal to the outer diameter of the permanent magnet, and the inner diameters of the upper rotor core and the lower rotor core are smaller than or equal to the inner diameter of the permanent magnet.
4. A disc-type ironcore permanent-magnet synchronous machine with a split-type magnetic field modulation architecture as claimed in claim 3, characterized in that: the magnetic regulating blocks, the upper rotor disk, the lower rotor disk and the stator core are made of the same material and are all made of high-saturation magnetically-dense soft magnetic alloy;
the permanent magnet is made of neodymium iron boron.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111549886.1A CN114172333B (en) | 2021-12-17 | 2021-12-17 | Disc type permanent magnet synchronous motor with iron core and separated magnetic field modulation structure |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111549886.1A CN114172333B (en) | 2021-12-17 | 2021-12-17 | Disc type permanent magnet synchronous motor with iron core and separated magnetic field modulation structure |
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| CN114172333A CN114172333A (en) | 2022-03-11 |
| CN114172333B true CN114172333B (en) | 2023-09-26 |
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| CN216872935U (en) * | 2021-12-17 | 2022-07-01 | 武汉环益电机智能科技有限公司 | Disc type iron core permanent magnet synchronous motor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4349089B2 (en) * | 2003-11-10 | 2009-10-21 | 株式会社エクォス・リサーチ | Axial gap rotating electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106374702A (en) * | 2016-11-11 | 2017-02-01 | 哈尔滨理工大学 | Disc type iron core-free magnetic flux modulation motor |
| CN113241866A (en) * | 2021-06-09 | 2021-08-10 | 武汉环益电机智能科技有限公司 | Disc type permanent magnet motor stator and rotor unit with magnetic gathering structure |
| CN113691092A (en) * | 2021-08-26 | 2021-11-23 | 南京信息工程大学 | Double-stator axial magnetic field hybrid excitation memory motor with asymmetric air gap structure |
| CN216872935U (en) * | 2021-12-17 | 2022-07-01 | 武汉环益电机智能科技有限公司 | Disc type iron core permanent magnet synchronous motor |
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| CN114172333A (en) | 2022-03-11 |
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