CN108847762A - A kind of double-casing motor reducing torque ripple - Google Patents
A kind of double-casing motor reducing torque ripple Download PDFInfo
- Publication number
- CN108847762A CN108847762A CN201810757965.3A CN201810757965A CN108847762A CN 108847762 A CN108847762 A CN 108847762A CN 201810757965 A CN201810757965 A CN 201810757965A CN 108847762 A CN108847762 A CN 108847762A
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- iron core
- shaft
- casing
- motor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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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
- H02K1/12—Stationary parts of the magnetic circuit
-
- 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
- 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
- H02K1/32—Rotating parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- 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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/16—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields
- H02K5/161—Means for supporting bearings, e.g. insulating supports or means for fitting bearings in the bearing-shields radially supporting the rotary shaft at both ends of the rotor
Abstract
A kind of double-casing motor reducing torque ripple, including shaft, both ends of the shaft is by bearing support on electric motor end cap, multiple spaced positioning devices and rotor unit are set in the middle part of shaft, stator unit is arranged on the outside of positioning device, stator unit is connected with casing, and casing both ends are connected with electric motor end cap；Stator unit includes that inner iron core and external iron core are clamped between upper stator substrate, lower stator substrate, and interior winding is wound with outside inner iron core, outer winding is wound with outside external iron core；Rotor unit includes rotor disk, and rotor disk is inlaid with interior permanent magnet and outer permanent magnet, the magnetic field interaction that the rotating excitation field and interior permanent magnet that interior winding generates generate and the torque opposite in phase that the torque generated and outer winding and outer permanent magnet interaction generate；The present invention reduces motor torque fluctuation while improving electric machine iron core utilization rate, reducing motor volume and quality, so that motor torque density is high, torque ripple is small.
Description
Technical field
The invention belongs to double-casing motor technical field more particularly to a kind of double-casing motors for reducing torque ripple.
Background technique
Chinese patent (Publication No. CN102801264, entitled permanent magnetism lamination motor) proposes that permanent magnetism lamination motor uses
Pillar-shaped permanent magnet and iron core, coil winding improve iron core utilization rate on the outside of column iron core, reduce motor quality and volume.But
It is above-mentioned permanent magnetism lamination motor using integral pitch winding, torque ripple is larger；Existed using square frame without motor housing
The disadvantages of security risk, limits its application.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of bilayers for reducing torque ripple
Motor reduces motor torque fluctuation, so that motor while improving electric machine iron core utilization rate, reducing motor volume and quality
Torque density is high, and torque ripple is small.
In order to achieve the above object, the technical scheme adopted by the invention is as follows：
A kind of double-casing motor reducing torque ripple, including shaft 1,1 both ends of shaft are supported on electric motor end cap by bearing 2
On 4, multiple positioning devices 10 and rotor unit 6, positioning device 10 and the setting of the interval of rotor unit 6 are set in the middle part of shaft 1, and
The setting of stator unit 7 that rotor unit 6 cooperates is connected in 10 outside of positioning device, stator unit 7 and casing 12,12 both ends of casing
It is connected with electric motor end cap 4；
The stator unit 7 includes upper stator substrate 15 and lower stator substrate 16, upper stator substrate 15, lower stator substrate
N inner iron core 17 and external iron core 18 are clamped between 16, each inner iron core 17 and corresponding external iron core 18 are aligned radially, often
It is wound with interior winding 19 on the outside of a inner iron core 17, outer winding 20 is wound on the outside of external iron core 18；
The rotor unit 6 includes rotor disk 21, and rotor disk 21 is inlaid with permanent magnet 22 and outer permanent magnet 23 in n,
Permanent magnet 22 and corresponding outer permanent magnet 23 are staggered certain angle radially in each, and angular dimension is 180 °/n, interior permanent magnetism
The magnetizing direction of body 22 and outer permanent magnet 23 is parallel with shaft 1, and the polarity of interior permanent magnet 22 and outer permanent magnet 23 is along respective point
Degree circle is alternately arranged；
Permanent magnets 22 generate in windings 19 generate in n rotating excitation field and n magnetic field interaction and turning for generating
The torque opposite in phase that square and the n outer winding 20 and n outer interactions of permanent magnet 23 generate.
The bearing (ball) cover 3 being set in the 2 outside shaft 1 of bearing is connected on electric motor end cap 4.
There is sealing ring 14 between the bearing (ball) cover 3 and shaft 1.
The 21 end face direction of rotor disk offers rotor axial heat release hole.
The positioning device 10 offers the axial heat release hole of positioning in end face, offers the radial heat dissipation of positioning in cylinder
Hole；It positions axial heat release hole and is connected to radial heat release hole is positioned.
The shaft 1 is equipped with the shaft shoulder 33, to limit 2 axial position of bearing.
Beneficial effects of the present invention are：The interior winding 19 of stator unit 7 and the interior permanent magnet 22 of rotor unit 6 interact
The torque phase that the torque of generation and the interaction of outer permanent magnet 23 of the outer winding 20 of stator unit 7 and rotor unit 6 generate
On the contrary, fluctuation is cancelled out each other.The present invention can reduce motor torque fluctuation, improve while reducing motor volume and quality
Motor torque density, it is very economical.
Detailed description of the invention
Fig. 1 is the axial sectional view of the embodiment of the present invention.
Fig. 2 (a) is the front view of stator unit 7；Fig. 2 (b) is the axial sectional view of stator unit 7.
Fig. 3 (a) is the normal axomometric drawing up and down of inner iron core 17 and interior winding 19；Fig. 3 (b) is inner iron core 17 and interior winding
19 axial sectional view.
Fig. 4 is the front view of shaft 1.
Fig. 5 is the two isogonism axonometric drawing of left and right of interior permanent magnet 22.
Fig. 6 is the front view of rotor unit 6.
Fig. 7 (a) is the normal axomometric drawing up and down of positioning device 10；Fig. 7 (b) is the front view of positioning device 10.
Specific embodiment
Below in conjunction with attached drawing, the present invention is described in further detail.
Referring to Fig.1, a kind of double-casing motor reducing torque ripple, including shaft 1,1 both ends of shaft are supported on by bearing 2
On electric motor end cap 4, it is set with a positioning device 10 in the middle part of shaft 1, is set with rotor list in the shaft 1 of 10 two sides of positioning device
The stator list of first sleeve 9 and the cooperation of rotor unit 6 is set in shaft 1 between on the inside of member 6, rotor unit 6 and bearing 2
For 7 setting of member in 10 outside of positioning device, stator unit 7 is fixed on 11 inside of second sleeve, 11 outside of second sleeve and casing 12
Connection, 12 both ends of casing are connected by bolt 13 and electric motor end cap 4, the bearing (ball) cover being set in the 2 outside shaft 1 of bearing
3 are connected on electric motor end cap 4 by screw 8, have sealing ring 14 between the bearing (ball) cover 3 and shaft 1.
Referring to Fig. 2 (a), Fig. 2 (b), Fig. 3 (a) and Fig. 3 (b), the stator unit 7 includes upper stator substrate 15 under
Stator substrate 16 is clamped with n inner iron core 17 and external iron core 18 between upper stator substrate 15, lower stator substrate 16, each interior iron
The heart 17 and corresponding external iron core 18 are aligned radially, and interior winding 19,18 outside of external iron core are wound on the outside of each inner iron core 17
It is wound with outer winding 20.
Referring to Fig. 4, the shaft 1 is equipped with the shaft shoulder 33, to limit 2 axial position of bearing.
Referring to figure 5 and figure 6, the rotor unit 6 includes rotor disk 21, and rotor disk 21 is inlaid with permanent magnet 22 in n
With outer permanent magnet 23, it is each in permanent magnet 22 and corresponding outer permanent magnet 23 be staggered radially certain angle, angular dimension is
180 °/n, the magnetizing direction of interior permanent magnet 22 and outer permanent magnet 23 is parallel with shaft 1, and interior permanent magnet 22 and outer permanent magnet 23
Polarity is alternately arranged along respective reference circle.
The magnetic field interaction of the generation of permanent magnets 22 in winding 19 generates in the n rotating excitation field and n and produce
The torque opposite in phase that raw torque and the n outer winding 20 and n outer interaction of permanent magnet 23 generates.
Referring to Fig. 6, the 21 end face direction of rotor disk offers the first rotor axial direction heat release hole 24, the second rotor axial
Heat release hole 25 and third trochanter axial direction heat release hole 26.
Referring to Fig. 7 (a), Fig. 7 (b), the positioning device 10 offers the first positioning axial direction heat release hole 30, the in end face
Two position axial heat release hole 31, third positions axial heat release hole 32, offer the first positioning radial direction heat release hole 27, second in cylinder
Position radial heat release hole 28, third positions radial heat release hole 29；First, which positions axial heat release hole 30, second, positions axial heat release hole
31, third positions axial heat release hole 32 and the radial heat release hole 27, second of the first positioning positions radial heat release hole 28, third positions diameter
It is connected to heat release hole 29.
The operation principle of the present invention is that：Alternating current, n are passed through in winding 19 and outer winding 20 in n in stator unit 7
A interior winding 19 generates n interior permanent magnets 22 in rotating excitation field, with rotor unit 6 with outer winding 20 and generates with outer permanent magnet 23
Magnetic field interaction, drive shaft 1,2 inner ring of bearing, sleeve 9, rotor unit 6, positioning device 10 to rotate together, generate and turn
Square；The torque generated due to the rotating excitation field of a interior generation of windings 19 of n and the magnetic field interaction of the n interior generations of permanent magnets 22
The torque opposite in phase generated with the n outer winding 20 and n outer interactions of permanent magnet 23, fluctuation are cancelled out each other, and electricity is reduced
Machine torque ripple, while motor torque is improved, structure is extremely compact, greatly improves torque density.
Claims (6)
1. a kind of double-casing motor for reducing torque ripple, including shaft (1), shaft (1) both ends are supported on motor by bearing (2)
On end cap (4), it is characterised in that：Multiple positioning devices (10) and rotor unit (6), positioning device are set in the middle part of shaft (1)
(10) and rotor unit (6) interval setting and rotor unit (6) cooperation stator unit (7) setting positioning device (10) outside
Side, stator unit (7) and casing (12) connection, casing (12) both ends and electric motor end cap (4) connection；
The stator unit (7) includes upper stator substrate (15) and lower stator substrate (16), upper stator substrate (15), lower stator
N inner iron core (17) and external iron core (18), each inner iron core (17) and corresponding external iron core (18) are clamped between substrate (16)
It is aligned, is wound with interior winding (19) on the outside of each inner iron core (17) radially, be wound with outer winding on the outside of external iron core (18)
(20)；
The rotor unit (6) includes rotor disk (21), and rotor disk (21) is inlaid with permanent magnet (22) and outer permanent magnet in n
(23), permanent magnet (22) and corresponding outer permanent magnet (23) are staggered certain angle radially in each, angular dimension for 180 °/
The magnetizing direction of n, interior permanent magnet (22) and outer permanent magnet (23) is parallel with shaft (1), and interior permanent magnet (22) and outer permanent magnet
(23) polarity is alternately arranged along respective reference circle；
Permanent magnets (22) generate in windings (19) generate in n rotating excitation field and n magnetic field interaction and turning for generating
The torque opposite in phase that square and n outer windings (20) and n outer permanent magnet (23) interactions generate.
2. a kind of double-casing motor for reducing torque ripple according to claim 1, it is characterised in that：The bearing (2)
The bearing (ball) cover (3) being set in outside shaft (1) is connected on electric motor end cap (4).
3. a kind of double-casing motor for reducing torque ripple according to claim 1, it is characterised in that：The bearing (ball) cover
(3) have between shaft (1) sealing ring (14).
4. a kind of double-casing motor for reducing torque ripple according to claim 1, it is characterised in that：The rotor disk
(21) end face direction offers rotor axial heat release hole.
5. a kind of double-casing motor for reducing torque ripple according to claim 1, it is characterised in that：The positioning device
(10) the axial heat release hole of positioning is offered in end face, offers the radial heat release hole of positioning in cylinder；It positions axial heat release hole and determines
The radial heat release hole connection in position.
6. a kind of double-casing motor for reducing torque ripple according to claim 1, it is characterised in that：The shaft (1)
Equipped with the shaft shoulder (33), to limit bearing (2) axial position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810757965.3A CN108847762A (en) | 2018-07-11 | 2018-07-11 | A kind of double-casing motor reducing torque ripple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810757965.3A CN108847762A (en) | 2018-07-11 | 2018-07-11 | A kind of double-casing motor reducing torque ripple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108847762A true CN108847762A (en) | 2018-11-20 |
Family
ID=64196597
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810757965.3A Pending CN108847762A (en) | 2018-07-11 | 2018-07-11 | A kind of double-casing motor reducing torque ripple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108847762A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350747A (en) * | 2019-03-08 | 2019-10-18 | 贵州航天林泉电机有限公司 | A kind of axial-flux electric machine rotor structure |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2115609U (en) * | 1992-02-27 | 1992-09-09 | 金燕生 | Rotory electric motor |
| JP2004140937A (en) * | 2002-10-18 | 2004-05-13 | Fujitsu General Ltd | Axial gap type motor |
| US20060022552A1 (en) * | 2004-07-28 | 2006-02-02 | Silicon Valley Micro M Corporation | Multi-phase A.C. vehicle motor |
| CN101803157A (en) * | 2007-09-14 | 2010-08-11 | 信越化学工业株式会社 | Permanent magnet rotating machine |
| CN102801264A (en) * | 2012-09-04 | 2012-11-28 | 魏乐汉 | Permanent magnet laminated motor |
-
2018
- 2018-07-11 CN CN201810757965.3A patent/CN108847762A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2115609U (en) * | 1992-02-27 | 1992-09-09 | 金燕生 | Rotory electric motor |
| JP2004140937A (en) * | 2002-10-18 | 2004-05-13 | Fujitsu General Ltd | Axial gap type motor |
| US20060022552A1 (en) * | 2004-07-28 | 2006-02-02 | Silicon Valley Micro M Corporation | Multi-phase A.C. vehicle motor |
| CN101803157A (en) * | 2007-09-14 | 2010-08-11 | 信越化学工业株式会社 | Permanent magnet rotating machine |
| CN102801264A (en) * | 2012-09-04 | 2012-11-28 | 魏乐汉 | Permanent magnet laminated motor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110350747A (en) * | 2019-03-08 | 2019-10-18 | 贵州航天林泉电机有限公司 | A kind of axial-flux electric machine rotor structure |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181120 |
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| RJ01 | Rejection of invention patent application after publication |