CN108768030A - A kind of iron core and disc type electric machine - Google Patents
A kind of iron core and disc type electric machine Download PDFInfo
- Publication number
- CN108768030A CN108768030A CN201811008532.4A CN201811008532A CN108768030A CN 108768030 A CN108768030 A CN 108768030A CN 201811008532 A CN201811008532 A CN 201811008532A CN 108768030 A CN108768030 A CN 108768030A
- Authority
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- China
- Prior art keywords
- iron core
- magnet steel
- steel
- installation position
- teeth
- 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.)
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Classifications
-
- 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
-
- 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
Abstract
The invention discloses a kind of iron core and motor, multigroup magnet steel installation position is evenly equipped with along the circumferential direction of iron core on iron core；Every group of magnet steel installation position includes multiple steel tanks, and along the circumferential direction of iron core, is provided with the first iron core teeth between adjacent steel tank with group magnet steel installation position, and with the magnet steel for installing like pole in the steel tank of group magnet steel installation position；The second iron core teeth is provided between adjacent sets magnet steel installation position, and the steel tank of adjacent sets magnet steel installation position is used to install the magnet steel of opposite pole.Every group of magnet steel installation position includes multiple steel tanks, and along the circumferential direction of iron core, is separated by the first iron core teeth between group steel tank, increase the d axle inductances of motor.When motor be carried out at high speed weak magnetic control when, under identical voltage, when increase motor d axle inductances, the size of required electric current can be substantially reduced, motor can be significantly improved in other words in the highest weak magnetic rotating speed that can reach.
Description
Technical field
The present invention relates to motor component technical fields, more particularly, to a kind of iron core and disc type electric machine.
Background technology
Radial magnetic field motor and motor in axial magnetic field (being also disc type electric machine) are the Liang great branches of motor field.Disc type electric machine
It receives and is more and more widely used with its higher iron core utilization, the power density of bigger and higher torque density.
However, when disc type electric machine is when carrying out weak magnetic control, need larger electric current, energy consumption larger.
Therefore, how to reduce disc type electric machine required electric current when carrying out weak magnetic control be those skilled in the art urgently
The technical issues of solution.
Invention content
In view of this, the first purpose of the invention is to provide a kind of iron core, disc type electric machine can be reduced and carrying out weak magnetic
Required electric current when control.
Second object of the present invention is to provide a kind of disc type electric machine.
In order to realize above-mentioned first purpose, the present invention provides following schemes：
A kind of iron core is evenly equipped with multigroup magnet steel installation position on the iron core along the circumferential direction of the iron core；
Magnet steel installation position described in every group includes multiple steel tanks, and along the circumferential direction of the iron core, with the group magnet steel
The first iron core teeth is provided between the adjacent steel tank in installation position, and interior for installing with the steel tank for organizing the magnet steel installation position
The magnet steel of like pole；
The second iron core teeth, and the steel tank of adjacent sets magnet steel installation position are provided between magnet steel installation position described in adjacent sets
The magnet steel for installing opposite pole.
In a specific embodiment, along the axial direction of the iron core, the thickness of second iron core teeth is big
In the thickness of first iron core teeth.
In another specific embodiment, the steel tank, first iron core teeth and the equal edge of the second iron core teeth
The radial direction for the iron core is divided into default layer setting.
In another specific embodiment, first iron core teeth on same layer and the equal edge of the second iron core teeth
The outside width of radial direction for the iron core becomes larger；
First iron core teeth of same layer is set between the steel tank of adjacent layer；
At the abutted surface of adjacent second iron core teeth, the width of second iron core teeth in outer layer is more than in interior
The width of second iron core teeth of layer.
In another specific embodiment, the default layer is 2 layers.
In another specific embodiment, the steel tank is dovetail groove.
In another specific embodiment, the iron core passes through silicon steel band or amorphous band punching press winding system
At.
Each embodiment according to the present invention can be combined arbitrarily as needed, the embodiment party of gained after these combinations
Case is also a part for the specific embodiment of the invention within the scope of the present invention.
In one particular embodiment of the present invention, iron core is provided with multigroup magnet steel installation position, phase along its circumferential direction
Neighbour's group magnet steel installation position is separated by the second iron core teeth, and the magnet steel of adjacent sets magnet steel installation position installation opposite pole, realizes iron
In-core magnetic field is uniformly distributed.Every group of magnet steel installation position includes multiple steel tanks, and along the circumferential direction of iron core, with organize steel tank it
Between by the first iron core teeth separate, increase the d axle inductances of motor.
When motor be carried out at high speed weak magnetic control when, when ignoring the influence of motor stator resistance, what motor can reach
Supreme ideal rotating speed is
In formula, p is motor number of pole-pairs, and Ψ f are rotor flux, and Ld is the d axle inductances of motor, and u and i are respectively the defeated of motor
Enter voltage and input current.It can be seen that under identical voltage from formula, it, can be apparent when the d axle inductances for increasing motor
The size of required electric current is reduced, motor can be significantly improved in other words in the highest weak magnetic rotating speed that can reach.
In order to realize above-mentioned second purpose, the present invention provides following schemes：
A kind of disc type electric machine, including magnet steel and the iron core as described in above-mentioned any one；
The magnet steel is mounted in the steel tank of the iron core.
In a specific embodiment, the magnet steel includes：
Pedestal, the floor installation is in the steel tank；
Scallop, the scallop is arranged in the top surface of the pedestal, and the scallop of the magnet steel in adjacent steel tank can
It fits together.
In another specific embodiment, the cross section of the pedestal is trapezoidal, and the face of the top surface of the pedestal
Area of the product less than the bottom surface of the pedestal.
Each embodiment according to the present invention can be combined arbitrarily as needed, the embodiment party of gained after these combinations
Case is also a part for the specific embodiment of the invention within the scope of the present invention.
Since disc type electric machine disclosed by the invention includes the magnet steel in above-mentioned any one, have possessed by iron core
Beneficial effect disc type electric machine disclosed by the invention included.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
Obtain other attached drawings according to these attached drawings.
Fig. 1 is the structural schematic diagram of iron core provided by the invention；
Fig. 2 is the A partial enlargement structural representations of Fig. 1；
Fig. 3 is the winding structural schematic diagram of iron core provided by the invention；
Fig. 4 is the structural schematic diagram for the magnet steel installed in iron core provided by the invention；
Fig. 5 is the installation process structural schematic diagram of iron core mounting magnetic steel provided by the invention；
Fig. 6 is the structural schematic diagram of the mounting magnetic steel of iron core provided by the invention.
Wherein, in Fig. 1-6：
It is magnet steel installation position 1, steel tank 2, the first iron core teeth 3, the second iron core teeth 4, magnet steel 5, pedestal 501, scallop 502, outer
Round iron core 6, inner circle iron core 7.
Specific implementation mode
It is below in conjunction with the accompanying drawings and specific real in order to make those skilled in the art be better understood from technical scheme of the present invention
Applying mode, the present invention is described in further detail.
Explanation of nouns：
Disc type electric machine：Disc type electric machine is also motor in axial magnetic field, and the direction in the magnetic field inside motor is axially.By
It is generally all presented in motor in axial magnetic field flat, therefore is also disc type electric machine.
D-axis inductance：(d axis and q axis are the coordinate systems established on rotor, this seat in the dq coordinate systems of motor
Mark system rotates synchronously with rotor, and it is d axis to take rotor field direction, is q axis perpendicular to rotor field direction), phase winding is in the axis sides d
Upward inductance.
Quadrature axis inductance：(d axis and q axis are the coordinate systems established on rotor, this seat in the dq coordinate systems of motor
Mark system rotates synchronously with rotor, and it is d axis to take rotor field direction, is q axis perpendicular to rotor field direction), phase winding is in the axis sides q
Upward inductance.
Salient pole ratio：The ratio of d-axis inductance and quadrature axis inductance.
Embodiment one
As shown in figures 1 to 6, the present invention provides a kind of iron cores.Can be used in intermediate stator, both sides rotor or single stator,
In the disc type electric machine structure of single rotor or tandem type.
Wherein, on iron core multigroup magnet steel installation position 1 is evenly equipped with along the circumferential direction of iron core.
Every group of magnet steel installation position 1 includes multiple steel tanks 2 for mounting magnetic steel 5.And along the circumferential direction of iron core, same group
It is provided with the first iron core teeth 3 between the adjacent steel tank 2 in magnet steel installation position 1, it is interior for installing with the steel tank 2 for organizing magnet steel installation position 1
The magnet steel 5 of like pole.
The second iron core teeth 4 is provided between adjacent sets magnet steel installation position 1, and the steel tank 2 of adjacent sets magnet steel installation position 1 is used for
The magnet steel 5 (the namely magnet steel 5 of opposite magnetic pole) for installing opposite pole, convenient for the normal use in magnetic field on iron core.
In the present embodiment, iron core is provided with multigroup magnet steel installation position 1, adjacent sets magnet steel installation position along its circumferential direction
1 is separated by the second iron core teeth 4, and the magnet steel 5 of opposite pole is installed in adjacent sets magnet steel installation position 1, realizes magnetic field in iron core
It is uniformly distributed.Every group of magnet steel installation position 1 includes multiple steel tanks 2, and along the circumferential direction of iron core, is passed through between group steel tank 2
First iron core teeth 3 separates, and increasing the d axle inductances of motor, (inductance is proportional to the magnetic conductance of field circuit, generates the magnetic of d axle inductances
Path is needed across magnet steel, since the first iron core teeth 3 is located on the magnetic flux path, it is thus possible to increase the field circuit
Therefore magnetic conductance increases the d axle inductances of motor).
When motor be carried out at high speed weak magnetic control when, when ignoring the influence of motor stator resistance, what motor can reach
Supreme ideal rotating speed is
In formula, p is motor number of pole-pairs, and Ψ f are rotor flux, and Ld is the d axle inductances of motor, and u and i are respectively the defeated of motor
Enter voltage and input current.It can be seen that under identical voltage from formula, it, can be apparent when the d axle inductances for increasing motor
The size of required electric current is reduced, motor can be significantly improved in other words in the highest weak magnetic rotating speed that can reach.
Embodiment two
In second embodiment provided by the invention, the structure class of the iron core in the present embodiment and the iron core in embodiment one
Seemingly, something in common is just repeated no more, only introduces difference.
In the present embodiment, the invention particularly discloses the axial direction along iron core, the thickness of the second iron core teeth 4 is more than
The thickness of first iron core teeth 3.
The second iron core teeth 4 on iron core can increase motor q axle inductances (inductance is proportional to the magnetic conductance of field circuit, production
The magnetic flux path of raw q axle inductances needs the medial axis across the magnetic pole of adjacent opposed polarity, due to the second iron core teeth 4
In on the magnetic flux path, it is thus possible to increase the magnetic conductance of the field circuit, increases the q axle inductances of motor), due to the second iron core
The thickness of tooth 4 is more than the thickness of the first iron core teeth 3, therefore, d axle inductances<Q axle inductances, d axis magnetic circuit and q axis magnetic circuit are asymmetric, root
According to formula
Τem=p [ψfiq+(Ld-Lq)idiq]
In formula, p is motor number of pole-pairs, ΨfFor rotor flux, idAnd iqRespectively d shaft currents and q shaft currents.Therefore in electricity
The reluctance torque component (first half is permanent magnet torque component) that above-mentioned formula latter half can be increased in the torque of machine, to
Increase the torque density of motor.
Further, the invention discloses steel tank 2, the first iron core teeth 3 and the second iron core teeths 4 each along the radial direction side of iron core
It is arranged to default layer is divided into.Default layer can be random layer, be set with specific reference to actual needs.
Further, the invention discloses the 4 equal edges of the second iron core teeth in the first iron core teeth 3 and same layer on same layer
The radial direction of iron core, equal width becomes larger outward.
First iron core teeth 3 of same layer is set between the steel tank 2 of adjacent layer, is easy to implement adjacent layer magnet steel 5 along iron core
Radial direction limited.
At the abutted surface of adjacent second iron core teeth 4, the width of the second iron core teeth 4 in outer layer is more than the in internal layer
The width of two iron core teeths 4 limits convenient for the magnet steel 5 to adjacent layer along the radial direction of iron core.
In the present embodiment, by taking default layer is 2 layers as an example, that is to say, that iron core has been divided into outer circle iron core 6 and inner circle iron core
7。
Further, in order to be limited along the axially direction of vertical iron core to magnet steel 5, the invention discloses steel tanks
2 be dovetail groove, when mounting magnetic steel 5, by magnet steel 5 respectively along being shifted onto inside and outside iron core in steel tank 2.
Further, the invention discloses iron cores is made up of silicon steel band or amorphous band punching press winding.In order to just
In punching press, the invention discloses the size all sames of the steel tank 2 in multigroup magnet steel installation position 1.I.e. the present invention by iron core into
Row Unequal distance punching press carries out punching press using identical diel on the different location on silicon steel band or amorphous band,
Form the steel tank 2 for placing magnet steel 5.
By carrying out the punching press of uneven Unequal distance to annular Wound core, the embedded dovetail groove of magnet steel 5 is formed；Annular volume
Around iron core by the mould punching of uneven Unequal distance, is formed in the installation site of every pole magnet steel 5 and placed by multiple dovetail grooves
Magnet steel 5.
The invention has the advantages that：
(1) manufacture can be realized only by a secondary diel in rotor core, and production efficiency is very high, is suitble to high-volume
Production；
(2) every group of magnet steel installation position 1 includes multiple steel tanks 2 for mounting magnetic steel 5, i.e., per pole magnet steel 5 by multiple independences
Magnet steel 5 form, reduce the eddy-current loss of magnet steel 5；
(3) 3 structure of the first iron core teeth in iron core can increase the d axle inductances of motor, weak magnetic of the increase motor in high speed
Ability improves the efficiency of high speed operation of motor.
(4) convex grey subset of motor is promoted by the second iron core teeth 4 of iron core, promotes the reluctance torque component of motor, carries
The torque density of lifting motor.
Embodiment three
The present invention provides the iron cores in a kind of disc type electric machine, including magnet steel 5 and such as above-mentioned any one embodiment.Magnet steel
5 are mounted in the steel tank 2 of iron core.
Since disc type electric machine disclosed by the invention includes the iron core in above-mentioned any one embodiment, iron core is had
Advantageous effect disc type electric machine disclosed by the invention included.
Example IV
In fourth embodiment provided by the invention, the disc type electric machine in disc type electric machine and embodiment three in the present embodiment
Structure it is similar, something in common is just repeated no more, difference is only introduced.
In the present embodiment, it includes pedestal 501 and scallop to specifically disclose magnet steel 5.Pedestal 501 is mounted in steel tank 2, fan
Shape portion is arranged in the top surface of pedestal 501, and specific scallop is that integral type connects with pedestal 501, and fan-shaped top surface area is more than bottom
The top surface area of seat 501.The scallop of the magnet steel 5 in adjacent steel tank 2 in same group of magnet steel installation position 1 can be fitted in one
It rises.There are certain gaps between the scallop of the magnet steel 5 of adjacent sets magnet steel installation position 1, expose the first iron core portion and the second iron
Core offers the connecting hole of mounting bracket, the magnet steel 5 of the width and adjacent sets magnet steel installation position 1 of holder in the second iron core portion
Scallop between there are gap width it is equal, convenient for magnet steel 5 carry out along iron core circumferential direction upper limit.
Further, it is trapezoidal the invention discloses the cross section of pedestal 501, and the area of the top surface of pedestal 501 is less than
The area of the bottom surface of pedestal 501.
In use, magnet steel 5 is installed in the steel tank 2 of above-mentioned iron core, and the fan of the magnet steel 5 in the adjacent steel tank 2 of iron core
Shape portion can fit together, and further be limited to magnet steel 5, and magnet steel 5 is avoided to be moved along the circumferential direction of iron core.With group steel tank
It is provided with the first iron core teeth 3 between 2 magnet steel 5, increases the d axle inductances of motor.When motor be carried out at high speed weak magnetic control when,
Under identical voltage, when the d axle inductances for increasing motor, it can be substantially reduced the size of required electric current, it in other words can be with
Motor is significantly improved in the highest weak magnetic rotating speed that can reach.
The direction for inside and outside herein referring to the axis along iron core towards iron core is interior, away from the direction of the axis of iron core
It is outer.Only for the purposes of description, do not have other special meanings.
It should also be noted that, herein, relational terms such as first and second and the like are used merely to one
Entity or operation are distinguished with another entity or operation, without necessarily requiring or implying between these entities or operation
There are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant are intended to contain
Lid non-exclusive inclusion, so that article or equipment including a series of elements include not only those elements, but also
Including other elements that are not explicitly listed, or further include for this article or the intrinsic element of equipment.Do not having
In the case of more limitations, the element that is limited by sentence "including a ...", it is not excluded that in the article for including above-mentioned element
Or there is also other identical elements in equipment.
Principle and implementation of the present invention are described for specific case used herein, and above example is said
It is bright to be merely used to help understand the core idea of the present invention.It should be pointed out that for those skilled in the art,
Without departing from the principle of the present invention, can be with several improvements and modifications are made to the present invention, these improvement and modification
It falls into the protection domain of the claims in the present invention.
Claims (10)
1. a kind of iron core, which is characterized in that be evenly equipped with multigroup magnet steel installation position along the circumferential direction of the iron core on the iron core
(1)；
Magnet steel installation position (1) described in every group includes multiple steel tanks (2), and along the circumferential direction of the iron core, with the group magnetic
The first iron core teeth (3) is provided between the adjacent steel tank (2) in steel installation position (1), and with the group magnet steel installation position (1)
Magnet steel (5) in steel tank (2) for installing like pole；
The second iron core teeth (4), and adjacent sets magnet steel installation position (1) are provided between magnet steel installation position (1) described in adjacent sets
Steel tank (2) be used to that the magnet steel (5) of opposite pole to be installed.
2. iron core according to claim 1, which is characterized in that along the axial direction of the iron core, second iron core
The thickness of tooth (4) is more than the thickness of first iron core teeth (3).
3. iron core according to claim 1, which is characterized in that the steel tank (2), first iron core teeth (3) and described
Second iron core teeth (4) is divided into default layer each along the radial direction of the iron core and is arranged.
4. iron core according to claim 3, which is characterized in that first iron core teeth (3) on same layer and described
Two iron core teeths (4) become larger each along the outside width of radial direction of the iron core；
First iron core teeth (3) of same layer is set between the steel tank (2) of adjacent layer；
At the abutted surface of adjacent second iron core teeth (4), the width of second iron core teeth (4) in outer layer, which is more than, to be in
The width of second iron core teeth (4) of internal layer.
5. iron core according to claim 3, which is characterized in that the default layer is 2 layers.
6. iron core according to claim 5, which is characterized in that the steel tank (2) is dovetail groove.
7. according to the iron core described in any one of claim 1-6, which is characterized in that the iron core by silicon steel band or
Amorphous band punching press winding is made.
8. a kind of disc type electric machine, which is characterized in that including magnet steel (5) and the iron core as described in any one of claim 1-7；
The magnet steel (5) is mounted in the steel tank (2) of the iron core.
9. disc type electric machine according to claim 8, which is characterized in that the magnet steel (5) includes：
Pedestal (501), the pedestal (501) are mounted in the steel tank (2)；
Scallop (502), the scallop (502) are arranged in the top surface of the pedestal (501), and the magnetic in adjacent steel tank (2)
The scallop (502) of steel (5) can fit together.
10. disc type electric machine according to claim 9, which is characterized in that the cross section of the pedestal (501) is trapezoidal, and
The area of the top surface of the pedestal (501) is less than the area of the bottom surface of the pedestal (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008532.4A CN108768030A (en) | 2018-08-31 | 2018-08-31 | A kind of iron core and disc type electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811008532.4A CN108768030A (en) | 2018-08-31 | 2018-08-31 | A kind of iron core and disc type electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108768030A true CN108768030A (en) | 2018-11-06 |
Family
ID=63966729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811008532.4A Pending CN108768030A (en) | 2018-08-31 | 2018-08-31 | A kind of iron core and disc type electric machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108768030A (en) |
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| CN206894380U (en) * | 2017-07-03 | 2018-01-16 | 苏州英磁新能源科技有限公司 | A kind of new fixing groove disk type electric motor rotor and motor |
| CN208445373U (en) * | 2018-08-31 | 2019-01-29 | 上海适达动力科技股份有限公司 | A kind of iron core and disc type electric machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101803157A (en) * | 2007-09-14 | 2010-08-11 | 信越化学工业株式会社 | Permanent magnet rotating machine |
| US20090134731A1 (en) * | 2007-11-26 | 2009-05-28 | Denso Corporation | Magnet type synchronous machine |
| WO2009116572A1 (en) * | 2008-03-19 | 2009-09-24 | 三洋電機株式会社 | Permanent magnet synchronization motor |
| CN202405896U (en) * | 2012-01-12 | 2012-08-29 | 信质电机股份有限公司 | Rotor core and high-efficiency variable-frequency speed regulation permanent magnet synchronous motor with same |
| CN103414301A (en) * | 2013-08-15 | 2013-11-27 | 南京信息工程大学 | Axial magnetic field ironless permanent magnet motor with split mounting type magnetic poles |
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