CN108574386B - A New Type of Magnetic Concentrating Disc Motor - Google Patents
A New Type of Magnetic Concentrating Disc Motor Download PDFInfo
- Publication number
- CN108574386B CN108574386B CN201810319634.1A CN201810319634A CN108574386B CN 108574386 B CN108574386 B CN 108574386B CN 201810319634 A CN201810319634 A CN 201810319634A CN 108574386 B CN108574386 B CN 108574386B
- Authority
- CN
- China
- Prior art keywords
- outer layer
- permanent magnet
- layer permanent
- rotor core
- middle layer
- 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
- 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
-
- 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
- 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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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a kind of novel magneticfocusing disc type electric machines, including stator and rotor；Stator includes stator core and armature winding；Rotor includes three-decker, outer layer includes the outer layer permanent magnet and outer layer rotor core that muti-piece is arranged alternately, the position that outer layer rotor core is corresponded in middle layer is equipped with middle layer permanent magnet, internal layer includes internal layer rotor core, outer layer permanent magnet is cutting orientation magnetizing, middle layer permanent magnet is radial magnetizing, adjacent outward layer permanent magnet magnetizing direction is opposite, adjacent middle layer permanent magnet magnetizing direction is also opposite, the magnetizing direction of two pieces of adjacent outer layer permanent magnets of outer layer rotor core and middle layer permanent magnet both with respect to outer layer rotor core outwardly or inwardly, the ratio of outer layer perimeter shared by outer layer permanent magnet is 0.1~0.55.The present invention effectively increases the space utilization rate and power density of motor.
Description
Technical field
The present invention relates to a kind of novel magneticfocusing disc type electric machines.
Background technique
In recent years, with numerically-controlled machine tool, industrial robot, manipulator, Moped Scooter, computer and its peripheral equipment etc.
The needs of the tracking systems such as the rise of high-tech product and special applications such as radar, satellite antenna propose servo drive motor
The requirement of higher performance indicator and slim mounting structure.Simultaneously with the continuous improvement of people's living standards, especially right
Household electrical appliance miniaturization, slimming, the cry of low noise are higher and higher, and structure and volume to motor are also proposed new want
It asks.
In order to meet the needs such as industry and people's life, the disc-type permanent magnet motor with high performance index comes into being.It
The advantages of combining magneto and disc type electric machine, such motor have the structure of magneto simple, reliable for operation, volume
Small, light weight is lost the advantages that small, high-efficient also while having the axial dimension of disc type electric machine short, and silicon steel sheet utilization rate is high, turns
Dynamic inertia is small, the advantages such as power density height.Therefore, disc-type permanent magnet motor is at home and abroad promptly obtained with many advantages of itself
To widely applying.
But the magnetic circuit of traditional disc-type permanent magnet motor is axial magnetic circuit structure, magnetic circuit is fairly simple, and leakage field is big, and structure is not
It is compact, to bring space utilization rate and the relatively low defect of power density.
Summary of the invention
Goal of the invention: the object of the present invention is to provide space utilization rates and power density that one kind can effectively improve motor
Novel magneticfocusing disc type electric machine.
Technical solution: to reach this purpose, the invention adopts the following technical scheme:
Novel magneticfocusing disc type electric machine of the present invention, including stator and rotor；Stator includes stator core and armature
Winding；Rotor includes three-decker, and outer layer includes the outer layer permanent magnet and outer layer rotor core that muti-piece is arranged alternately, in middle layer
The position of corresponding outer layer rotor core is equipped with middle layer permanent magnet, and internal layer includes internal layer rotor core, and outer layer permanent magnet is tangential
It magnetizes, middle layer permanent magnet is radial magnetizing, and adjacent outward layer permanent magnet magnetizing direction is on the contrary, the adjacent middle layer permanent magnet side of magnetizing
To also on the contrary, the magnetizing direction of the adjacent two pieces of outer layer permanent magnets and middle layer permanent magnet of outer layer rotor core is both with respect to outer
Outwardly or inwardly, the ratio of outer layer perimeter shared by outer layer permanent magnet is 0.1~0.55 to layer rotor core.
Further, the position for outer layer permanent magnet being corresponded in middle layer is not provided with any object.Leakage field can be reduced in this way, together
When can reduce the weight of motor, thus reduce cost, improve power density.
Further, outer layer rotor core is sector, and outer layer permanent magnet is rectangle；Or outer layer rotor core is rectangle, outside
Layer permanent magnet is sector.
Further, middle layer permanent magnet is sector, and internal layer rotor core is annular.
Further, the material of all outer layer permanent magnets is identical, and the material of all middle layer permanent magnets is identical, middle layer permanent magnetism
The coercivity of body material is not more than the coercivity of outer layer permanent magnet material.
Further, stator core includes stator tooth and stator yoke.
The utility model has the advantages that the invention discloses a kind of novel magneticfocusing disc type electric machine, make full use of neodymium iron boron high-performance and
The high permeance of soft iron improves the utilization rate of permanent magnet and iron core by the two Binding change magnetic circuit, reduces leakage
Magnetic also increases the utilization rate in motor space, to improve the power density of motor.
Detailed description of the invention
Fig. 1 is the structure chart of motor in the specific embodiment of the invention；
Fig. 2 is the magnetizing direction schematic diagram of rotor in the specific embodiment of the invention；
Fig. 3 is the magnetic circuit schematic diagram of the outer layer permanent magnet of motor in the specific embodiment of the invention；
Fig. 4 is the magnetic circuit schematic diagram of the middle layer permanent magnet of motor in the specific embodiment of the invention.
Specific embodiment
Technical solution of the present invention is further introduced With reference to embodiment.
Present embodiment discloses a kind of novel magneticfocusing disc type electric machine, as shown in Figure 1, including stator and rotor.
Stator includes two groups of stator cores 1 and two groups of armature winding 2.Wherein, two groups of 1 sizes of stator core are identical, and mirror image is staggered relatively.
Stator core 1 includes stator tooth and stator yoke.Armature winding 2 is placed in stator core 1 using centralized Double Layer Winding
In stator slot, and connect between two groups of annular armature windings 2.
As depicted in figs. 1 and 2, rotor includes three-decker, and outer layer includes the outer layer permanent magnet 3 that muti-piece is arranged alternately and outer
Layer rotor core 4 correspond to the position of outer layer rotor core 4 in middle layer equipped with middle layer permanent magnet 5, corresponds to outer layer in middle layer
The position of permanent magnet 3 is not provided with any object, and internal layer includes internal layer rotor core 6, and outer layer permanent magnet 3 is cutting orientation magnetizing, intermediate
Layer permanent magnet 5 is radial magnetizing, and 3 magnetizing direction of adjacent outward layer permanent magnet is on the contrary, adjacent 5 magnetizing direction of middle layer permanent magnet also phase
Instead, the magnetizing direction of two pieces of adjacent outer layer permanent magnets 3 of outer layer rotor core 4 and middle layer permanent magnet 5 is both with respect to outer layer
Outwardly or inwardly, the ratio of outer layer perimeter shared by outer layer permanent magnet 3 is 0.1~0.55 to rotor core 4.Outer layer rotor core 4
For sector, outer layer permanent magnet 3 is rectangle；Or outer layer rotor core 4 is rectangle, outer layer permanent magnet 3 is sector.Middle layer permanent magnetism
Body 5 is sector, and internal layer rotor core 6 is annular.
The material of all outer layer permanent magnets 3 is identical, and the material of all middle layer permanent magnets 5 is identical, 5 material of middle layer permanent magnet
The coercivity of material is not more than the coercivity of 3 material of outer layer permanent magnet.
The magnetic circuit of outer layer permanent magnet 3 is as shown in figure 3, magnetic circuit are as follows: and 4 → air gap of outer layer permanent magnet 3 → outer layer rotor core →
The closed circuit that stator tooth → stator yoke → adjacent stators tooth → air gap → outer layer 4 → outer layer of rotor core permanent magnet 3 is constituted.In
The magnetic circuit of interbed permanent magnet 5 is as shown in figure 4, magnetic circuit are as follows: 4 → air gap of middle layer permanent magnet 5 → outer layer rotor core → stator tooth
→ stator yoke → adjacent stators tooth → air gap → outer layer rotor core 4 → adjacent middle layer 5 → internal layer of permanent magnet rotor core 6 →
The closed circuit that the middle layer permanent magnet 5 is constituted.As it can be seen that the magnetic structure of the middle layer permanent magnet of present embodiment is presented
Three-dimensional structure increases the utilization rate to motor space.
Present embodiment makes full use of the high-performance of neodymium iron boron, and the high permeance of soft iron is combined by the two and changed
Become magnetic circuit, improved the utilization rate of permanent magnet and iron core, reduce leakage field, also increases the utilization rate in motor space, thus
Improve the power density of motor.
Claims (5)
1. a kind of novel magneticfocusing disc type electric machine, it is characterised in that: including stator and rotor；Stator include stator core (1) and
Armature winding (2)；Rotor includes three-decker, and outer layer includes the outer layer permanent magnet (3) and outer layer rotor iron that muti-piece is arranged alternately
Core (4), the position that outer layer rotor core (4) is corresponded in middle layer are equipped with middle layer permanent magnet (5), and internal layer includes internal layer rotor iron
Core (6), outer layer permanent magnet (3) are cutting orientation magnetizing, and middle layer permanent magnet (5) is radial magnetizing, and adjacent outward layer permanent magnet (3) magnetizes
Contrary, adjacent middle layer permanent magnet (5) magnetizing direction is also on the contrary, the adjacent two blocks of outer layer permanent magnetism of outer layer rotor core (4)
Outwardly or inwardly both with respect to outer layer rotor core (4), outer layer is forever for the magnetizing direction of body (3) and middle layer permanent magnet (5)
The ratio of outer layer perimeter shared by magnet (3) is 0.1~0.55；The position that outer layer permanent magnet (3) is corresponded in middle layer is not provided with appointing
What object.
2. novel magneticfocusing disc type electric machine according to claim 1, it is characterised in that: outer layer rotor core (4) is sector,
Outer layer permanent magnet (3) is rectangle；Or outer layer rotor core (4) is rectangle, outer layer permanent magnet (3) is sector.
3. novel magneticfocusing disc type electric machine according to claim 2, it is characterised in that: middle layer permanent magnet (5) is sector,
Internal layer rotor core (6) is annular.
4. novel magneticfocusing disc type electric machine according to claim 1, it is characterised in that: the material of all outer layer permanent magnets (3)
Expect identical, the material of all middle layer permanent magnets (5) is identical, and the coercivity of middle layer permanent magnet (5) material is forever no more than outer layer
The coercivity of magnet (3) material.
5. novel magneticfocusing disc type electric machine according to claim 1, it is characterised in that: stator core (1) includes stator tooth
And stator yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810319634.1A CN108574386B (en) | 2018-04-11 | 2018-04-11 | A New Type of Magnetic Concentrating Disc Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810319634.1A CN108574386B (en) | 2018-04-11 | 2018-04-11 | A New Type of Magnetic Concentrating Disc Motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108574386A CN108574386A (en) | 2018-09-25 |
| CN108574386B true CN108574386B (en) | 2019-06-21 |
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ID=63574840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810319634.1A Active CN108574386B (en) | 2018-04-11 | 2018-04-11 | A New Type of Magnetic Concentrating Disc Motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108574386B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768684B (en) * | 2019-03-04 | 2020-08-11 | 哈尔滨工业大学 | Radial Parallel Double Stator Multiphase Permanent Magnet Fault Tolerant Motor |
| CN109921601A (en) * | 2019-03-18 | 2019-06-21 | 湖南大学 | A Novel High Torque Density Non-contact Axial Magnetic Coupling |
| CN112383159B (en) * | 2020-07-09 | 2022-04-29 | 东南大学 | Spoke type permanent magnet synchronous motor rotor structure |
| CN112152354B (en) * | 2020-08-19 | 2023-01-13 | 沈阳工业大学 | Surface insertion type permanent magnet disc type motor rotor |
| CN112152355B (en) * | 2020-08-19 | 2023-04-25 | 沈阳工业大学 | Built-in magnetic steel tangential magnetizing disc type motor rotor |
| CN113315282B (en) * | 2021-04-28 | 2022-07-26 | 西北工业大学 | Disc type motor rotor with optimized magnetic circuit |
| CN113241866B (en) * | 2021-06-09 | 2022-08-30 | 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 |
| CN117559692B (en) * | 2023-10-31 | 2024-09-20 | 天津大学 | Rotor structure of high-torque-density multidirectional magnetism-gathering axial flux permanent magnet motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102364844B (en) * | 2011-10-27 | 2013-08-28 | 华瑞科学仪器(上海)有限公司 | Assembled magnetic disk type generator |
| CN202856578U (en) * | 2012-08-27 | 2013-04-03 | 西北工业大学 | Disk-type three-phase magnetism-gathering type transverse magnetic field permanent magnetism motor for electric vehicles |
| DE102013212586A1 (en) * | 2013-06-28 | 2014-12-31 | Robert Bosch Gmbh | Electric machine with disc rotor |
| CN103762758A (en) * | 2014-01-08 | 2014-04-30 | 南京理工大学 | Rotor magnet-gathering type horizontal magnetic-flow permanent-magnet disc wind driven generator |
| CN105141091A (en) * | 2015-10-15 | 2015-12-09 | 东南大学 | Double-stator double-power-winding magnetic concentrating hybrid permanent magnet memory motor |
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2018
- 2018-04-11 CN CN201810319634.1A patent/CN108574386B/en active Active
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| Publication number | Publication date |
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| CN108574386A (en) | 2018-09-25 |
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