CN108649764A - A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation - Google Patents
A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation Download PDFInfo
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- CN108649764A CN108649764A CN201810702153.9A CN201810702153A CN108649764A CN 108649764 A CN108649764 A CN 108649764A CN 201810702153 A CN201810702153 A CN 201810702153A CN 108649764 A CN108649764 A CN 108649764A
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- 230000005284 excitation Effects 0.000 title claims abstract description 11
- 238000004804 winding Methods 0.000 claims abstract description 62
- 239000000725 suspension Substances 0.000 claims abstract description 35
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000000203 mixture Substances 0.000 claims description 4
- 230000004907 flux Effects 0.000 description 17
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000004323 axial length Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005339 levitation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/02—Synchronous motors
- H02K19/10—Synchronous motors for multi-phase current
- H02K19/103—Motors having windings on the stator and a variable reluctance soft-iron rotor without windings
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
-
- 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
- H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
The invention discloses a kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation, including rotor and stator, the rotor to be made of shaft and rotor core, and the excircle of the rotor core has been evenly arranged rotor permanent magnet；The stator includes the stator core being radially outward sequentially connected along rotor core, magnetism-isolating loop, axial suspension winding, magnetic guiding loop, and it is symmetrically disposed on the axial control iron core and circular ring shape constant-current source winding of stator core both sides, the outer of the axial control iron core connects magnetic guiding loop, and interior edge extends to rotor core；The stator core and magnetism-isolating loop are connected to the T-shaped structure that the radial component of axial component inner wall forms by axial component and outer end, the axial component of stator core and radial component are divided into symmetrical two parts by the axial component inner wall of the radial component outer wall fitting magnetism-isolating loop of the stator core, the radial component of the magnetism-isolating loop；The motor torque winding for being located at internal layer and outer layer, radial suspension winding are wound in the stator core.
Description
Technical field
The present invention relates to bearing-frees and magnetic suspension motor manufacturing technology field, and in particular to the three of a kind of constant-current source excitation from
By degree permanent-magnetic electric machine with bearing.
Background technology
Bearing-free and magnetic suspension motor are the novel high speed specific type of electric machine to grow up at the end of the eighties in last century, bearing-free electricity
Machine is broadly divided into three kinds of magnetic resistance type, induction type and permanent magnet type non-bearing motor, compared with other two kinds, permanent magnet type non-bearing motor
Using rotor permanent magnet structure, have many advantages, such as high without excitation, power density and torque density, controls simple, be most work
A kind of bearing-free motor of industry application prospect.There are three magnetic fields, i.e. torque winding inside traditional permanent magnet type non-bearing motor
Magnetic field, suspending windings magnetic field and rotor permanent magnet magnetic field, and torque winding magnetic field number of pole-pairsP MWith suspending windings magnetic field number of pole-pairsP B
Between must satisfyP M=P B± 1 relationship, torque are generated by torque winding magnetic field and rotor permanent magnet magnetic field, and suspending power is by suspending
Winding magnetic field and rotor permanent magnet magnetic field generate, and to realize that rotor stability suspends and rotation must use complicated suspending power and turn
Square dynamically decoupling control algorithm, and exist between torque and suspending power generation and restrict equilibrium relation, the limitation of the two inherent defects
The commercial Application process of traditional permanent magnet type non-bearing motor.
In addition, permanent-magnetic electric machine with bearing needs axial magnetic suspension bearing to match with it to realize five-degree magnetic suspension operation
It closes and uses.Axial magnetic bearing will certainly increase the axial length of floatation electric motor system, and then reduce critical speed and power density.
Therefore, realizing torque and on the basis of Decoupling control of levitation force, the integrated of permanent-magnetic electric machine with bearing and axial magnetic bearing is realized
Have become the research hotspot in magnetic suspension motor field.
Invention content
The object of the present invention is to provide a kind of compact-sized, axial suspension power, radial suspension force and the non-coupling perseverances of torque
The Three Degree Of Freedom permanent-magnetic electric machine with bearing of stream source excitation.
The invention is realized by the following technical scheme：
A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation, including rotor and stator, the rotor is by shaft and turns
Sub- iron core composition, the excircle of the rotor core have been evenly arranged rotor permanent magnet；The stator includes along rotor core diameter
To be sequentially connected outward stator core, magnetism-isolating loop, axial suspension winding, magnetic guiding loop, and be symmetrically disposed on stator core two
The axial control iron core and circular ring shape constant-current source winding of side, the outer of the axial control iron core connect magnetic guiding loop, and interior edge is to turning
Sub- iron core extends and is provided with axial working gas gap；The stator core and magnetism-isolating loop are connected to by axial component and outer end
The T-shaped structure of the radial component composition of axial component inner wall, the axial component outer wall fitting magnetism-isolating loop of the stator core
The axial component of stator core and radial component are divided into symmetrical two by the radial component of axial part inner wall, the magnetism-isolating loop
Point；It is provided with radial working gas gap between the stator core and rotor core, is wound with and is located in the stator core
The motor torque winding of internal layer and outer layer, radial suspension winding.
The further scheme of the present invention is that stator slot is provided in the stator core, the motor torque winding, radial direction
Suspending windings are respectively embedded into stator slot.
The further scheme of the present invention is that the magnetic field number of pole-pairs of motor torque winding and the magnetic field of radial suspension winding are extremely right
The difference of number is more than or equal to three.
The advantages of the present invention over the prior art are that：
One, the integrated of two-freedom permanent-magnetic electric machine with bearing and axial magnetic bearing is realized, is that a kind of structure novel, the world are first
A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of wound, is to be provided axially and radially to bias respectively by two circular ring shape constant-current source windings
Magnetic flux, axial suspension winding, which is powered, generates axial suspension magnetic flux, and radial suspension winding, which is powered, generates radial suspension magnetic flux, it is radial and
Axial suspension magnetic flux adjusts biasing magnetic flux respectively, makes the magnetic field-enhanced of axially and radially air gap side, and opposite direction magnetic field subtracts
It is weak, the suspending power for being directed toward magnetic field-enhanced direction is generated, according to the prior art, establishes axially and radially displacement closed loop control system,
Realize rotor axial and radial Three Degree Of Freedom stable suspersion；And torque be the torque winding magnetic field generated by motor torque winding and
The rotor permanent magnet magnetic field interaction that rotor permanent magnet generates generates, and the number of pole-pairs of torque winding magnetic fieldP MAnd radial suspension
The number of pole-pairs in the suspending windings magnetic field that winding generatesP BBetween meetP M‒P B>=3 relationship, torque and suspending power are without coupling, control
Simply, it is easy to accomplish；
Two, it is applied in five-degree magnetic suspension drive system, an axial magnetic bearing and two-freedom bearing-free can be replaced forever
Magneto will greatly reduce axial length and system bulk and weight, to realizing bearing-free switch reluctance motor commercial Application
With landmark significance.
Description of the drawings
Fig. 1 is the axial arrangement and magnetic flux sectional view of the present invention.
Fig. 2 is stator core and rotor structure, coils arrangement and the magnetic flux schematic diagram of the present invention.
Specific implementation mode
A kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation as shown in Figure 1, including rotor and stator, it is described
Rotor is made of shaft 12 and rotor core 11, and the rotor core surface is embedded with rotor permanent magnet 13.
The stator includes the stator core 5 being radially outward sequentially connected along rotor core 11, magnetism-isolating loop 8, circular ring shape
Axial suspension winding 4, magnetic guiding loop 2, and it is symmetrically disposed on the left side axial direction control iron core 1 and right-hand axis of 5 both sides of stator core
To control iron core 3, left circles annular constant-current source winding 6, right circles annular constant-current source winding 7, left side axially controls iron core 1 and the right side
It is disc, left side circular ring shape that side axle, which can be magnetic pole types structure, the present embodiment such as disc, three poles, quadrupole to control iron core 3,
Constant-current source winding 6, right circles annular constant-current source winding 7 can connect, and axially control iron core 1 and right side axially control in the left side
The outer of iron core 3 is separately connected the arranged on left and right sides face of magnetic guiding loop 2, and interior edge extends to rotor core 11 and is provided with left axle respectively
To working gas gap, right axle to working gas gap；The stator core 5 and magnetism-isolating loop 8 are to be connected to axis by axial component and outer end
The T-shaped structure formed to the radial component of portion's inner wall, the axis of the axial component outer wall fitting magnetism-isolating loop 8 of the stator core 5
To internal partial wall, the axial part hair and radial component of stator core 5 are divided into left and right symmetrical by the radial component of the magnetism-isolating loop 8
7 fonts two parts, the thickness of 8 axial component of the magnetism-isolating loop and radial component is more than the sum of arranged on left and right sides axial air-gap；
The axial component of the stator core 5, the axial component of magnetism-isolating loop 8, axial suspension winding 4 the left and right sides be bonded respectively left side
Axial control iron core 1, right side axially control 3 inner wall of iron core；The magnetism-isolating loop 8 is made of monoblock aluminium；The left side circular ring shape
The arranged on left and right sides and outer wall of constant-current source winding 6 are bonded the axial control iron core 1 in left side, stator core 5, the right side annulus respectively
The arranged on left and right sides and outer wall of shape constant-current source winding 7 are bonded the axial control iron core 3 in right side, stator core 5 respectively.
It is provided with radial working gas gap between the stator core 5 and rotor core 11, is provided in the stator core 5
Stator slot is embedded in the stator slot and is located at internal layer, the motor torque winding 9 of outer layer, radial suspension winding 10, radial
Suspending windings 10 are centralized winding, as shown in Fig. 2, the winding on six teeth up and down in the directions y is outstanding for controlling the directions generation y
The series connection of buoyancy, i.e. Y1 ~ Y12 is a phase, suspending power of the winding for generating the directions x on the tooth of left and right six in the directions x, i.e. X1 ~
X12 series connection is a phase.
Rotor core 11, left side axially control iron core 1, magnetic guiding loop 2, right side axially control iron core 3, stator core 5 by
Axially and radially the good material of magnetic property is made.
Axially control iron core 1, right side axially control iron core 3, left circles annular constant-current source winding 6, right circles in the left side
Annular constant-current source winding 7, stator core 5, magnetism-isolating loop 8, axial suspension winding 4, magnetic guiding loop 2, radial suspension winding 10, torque around
Group 9 laminates in an axial direction.
Suspension theory is：Left circles annular constant-current source winding 6, right circles annular constant-current source winding 7 generate left side partially respectively
Set magnetic flux 17, right side biasing magnetic flux 16, left side biasing magnetic flux 17 passes through axial iron core 1, the left axle of controlling in left side to work gas successively
Gap, rotor core 11, radial working gas gap, stator core 5 form closed path；Right side biases magnetic flux 16 and passes through right-hand axis successively
To control iron core 3, right axle closed path is formed to working gas gap, rotor core 11, radial working gas gap, stator core 5.
Axial suspension winding 4, which is powered, generates axial suspension magnetic flux 15, and axial suspension magnetic flux 15 passes through magnetic guiding loop 2, a left side successively
Side axle axially controls 3 shape of iron core to working gas gap, rotor core 11, right axle to control iron core 1, left axle to working gas gap, right side
At closed path；Radial suspension winding 10 is powered, and generates radial suspension magnetic flux 14, and radial suspension magnetic flux 14 passes through the stator of top
Iron core 5, the radial working gas gap of top, rotor core 11, the stator core 5 of the radial working gas gap of lower section, lower section, with stator
The iron core portion of gripping forms closed path.Radial and axial suspension magnetic flux adjusts corresponding biasing magnetic flux, makes radial and axial side gas
Gap is magnetic field-enhanced, and opposite direction air-gap field weakens, to generate the suspending power for being directed toward air-gap field enhancing direction, in stator
Upper installation axial direction and radial displacement transducer, or pass through without gap sensors algorithm, detection and identification rotor radial and axial direction
Displacement signal establishes axially and radially displacement closed-loop control, realizes rotor Three Degree Of Freedom stable suspersion.
Principle of Rotating is：Motor torque winding 9, which is powered, generates torque winding magnetic field, as shown in Fig. 2, torque winding magnetic field pole
LogarithmP MWith suspending windings magnetic field number of pole-pairsP BBetween meetP M‒P B>=3 relationship, and the rotor that rotor permanent magnet 13 generates is forever
The number of pole-pairs of magnets magnetic fields is identical as the number of pole-pairs of torque winding magnetic field, and the decoupling of torque and suspending power is realized in structure, turns
Square is generated by torque winding magnetic field and rotor permanent magnet magnetic field interaction.
Claims (3)
1. a kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation, including rotor and stator, the rotor is by shaft
（12）And rotor core（11）Composition, it is characterised in that：The rotor core（11）Excircle be evenly arranged rotor permanent magnet
Body（13）；The stator includes along rotor core（11）The stator core being radially outward sequentially connected（5）, magnetism-isolating loop（8）, it is axial
Suspending windings（4）, magnetic guiding loop（2）, and it is symmetrically disposed on stator core（5）The axial control iron core of both sides and circular ring shape constant current
The outer of source winding, the axial control iron core connects magnetic guiding loop（2）, interior edge is to rotor core（11）Extend and is provided with axial direction
Working gas gap；The stator core（5）And magnetism-isolating loop（8）It is the diameter that axial component inner wall is connected to by axial component and outer end
To the T-shaped structure of part composition, the stator core（5）Axial component outer wall be bonded magnetism-isolating loop（8）Axial component in
Wall, the magnetism-isolating loop（8）Radial component by stator core（5）Radial component and axial component be divided into symmetrical two
Point；The stator core（5）With rotor core（11）Between be provided with radial working gas gap, the stator core（5）Upper coiling
There is the motor torque winding for being located at internal layer and outer layer（9）, radial suspension winding（10）.
2. a kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation as described in claim 1, it is characterised in that：It is described
Stator core（5）On be provided with stator slot, the motor torque winding（9）, radial suspension winding（10）It is respectively embedded into stator slot
In.
3. a kind of Three Degree Of Freedom permanent-magnetic electric machine with bearing of constant-current source excitation as described in claim 1, it is characterised in that：Motor
The difference of the magnetic field number of pole-pairs of torque winding and the magnetic field number of pole-pairs of radial suspension winding is more than or equal to three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810702153.9A CN108649764B (en) | 2018-06-30 | 2018-06-30 | Three-degree-of-freedom bearingless permanent magnet motor with constant current source excitation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810702153.9A CN108649764B (en) | 2018-06-30 | 2018-06-30 | Three-degree-of-freedom bearingless permanent magnet motor with constant current source excitation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108649764A true CN108649764A (en) | 2018-10-12 |
| CN108649764B CN108649764B (en) | 2020-06-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810702153.9A Active CN108649764B (en) | 2018-06-30 | 2018-06-30 | Three-degree-of-freedom bearingless permanent magnet motor with constant current source excitation |
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| Country | Link |
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| CN (1) | CN108649764B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020001290A1 (en) * | 2018-06-30 | 2020-01-02 | 淮阴工学院 | Three-degree-of-freedom bearingless asynchronous motor excited by constant current source |
| CN117424415A (en) * | 2023-09-19 | 2024-01-19 | 淮阴工学院 | Constant current source axial auxiliary excitation five-degree-of-freedom magnetic suspension motor |
| CN117536992A (en) * | 2023-09-19 | 2024-02-09 | 淮阴工学院 | Three-degree-of-freedom hybrid excitation magnetic bearing |
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|---|---|---|---|---|
| CN1852005A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | Super-high-speed high-power magnetic-suspension main-shaft motor |
| CN101207309A (en) * | 2007-12-07 | 2008-06-25 | 沈阳工业大学 | High speed magnetic suspension permanent magnet motor without bearing |
| CN101392795A (en) * | 2008-10-24 | 2009-03-25 | 江苏大学 | External rotor radial-axial three freedom degree mixed magnetic bearing |
| CN103016525A (en) * | 2012-12-19 | 2013-04-03 | 江苏大学 | Constant current biased radial-axial magnetic bearing |
| WO2013150060A3 (en) * | 2012-04-04 | 2014-07-03 | Ksb Aktiengesellschaft | Asynchronous motor and underwater pump |
-
2018
- 2018-06-30 CN CN201810702153.9A patent/CN108649764B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1852005A (en) * | 2006-04-30 | 2006-10-25 | 南京航空航天大学 | Super-high-speed high-power magnetic-suspension main-shaft motor |
| CN101207309A (en) * | 2007-12-07 | 2008-06-25 | 沈阳工业大学 | High speed magnetic suspension permanent magnet motor without bearing |
| CN101392795A (en) * | 2008-10-24 | 2009-03-25 | 江苏大学 | External rotor radial-axial three freedom degree mixed magnetic bearing |
| WO2013150060A3 (en) * | 2012-04-04 | 2014-07-03 | Ksb Aktiengesellschaft | Asynchronous motor and underwater pump |
| CN103016525A (en) * | 2012-12-19 | 2013-04-03 | 江苏大学 | Constant current biased radial-axial magnetic bearing |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020001290A1 (en) * | 2018-06-30 | 2020-01-02 | 淮阴工学院 | Three-degree-of-freedom bearingless asynchronous motor excited by constant current source |
| CN117424415A (en) * | 2023-09-19 | 2024-01-19 | 淮阴工学院 | Constant current source axial auxiliary excitation five-degree-of-freedom magnetic suspension motor |
| CN117536992A (en) * | 2023-09-19 | 2024-02-09 | 淮阴工学院 | Three-degree-of-freedom hybrid excitation magnetic bearing |
| CN117424415B (en) * | 2023-09-19 | 2024-06-21 | 淮阴工学院 | Constant current source axial auxiliary excitation five-degree-of-freedom magnetic suspension motor |
| CN117536992B (en) * | 2023-09-19 | 2024-06-28 | 淮阴工学院 | Three-degree-of-freedom hybrid excitation magnetic bearing |
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| Publication number | Publication date |
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| CN108649764B (en) | 2020-06-02 |
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Application publication date: 20181012 Assignee: Shanghai Yanqiao Information Technology Co.,Ltd. Assignor: HUAIYIN INSTITUTE OF TECHNOLOGY Contract record no.: X2021980014312 Denomination of invention: A three degree of freedom bearingless permanent magnet motor excited by constant current source Granted publication date: 20200602 License type: Common License Record date: 20211213 |
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Effective date of registration: 20240821 Address after: 810, 8th Floor, Building 10, Courtyard 1, Tianxing Street, Fangshan District, Beijing, 102400 Patentee after: Beijing Zhichanhui Technology Co.,Ltd. Country or region after: China Address before: 223005 Huaian 1 Jiangsu Economic Development Zone Patentee before: HUAIYIN INSTITUTE OF TECHNOLOGY Country or region before: China |
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