CN203071777U - Coreless permanent magnet motor - Google Patents
Coreless permanent magnet motor Download PDFInfo
- Publication number
- CN203071777U CN203071777U CN 201320063143 CN201320063143U CN203071777U CN 203071777 U CN203071777 U CN 203071777U CN 201320063143 CN201320063143 CN 201320063143 CN 201320063143 U CN201320063143 U CN 201320063143U CN 203071777 U CN203071777 U CN 203071777U
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- Prior art keywords
- permanent magnet
- stator
- rotor
- motor
- external rotor
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052742 iron Inorganic materials 0.000 claims abstract description 21
- 239000000696 magnetic material Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 9
- 230000001360 synchronised effect Effects 0.000 claims description 10
- 229920006335 epoxy glue Polymers 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 230000005284 excitation Effects 0.000 abstract description 8
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000008901 benefit Effects 0.000 description 9
- 229910052761 rare earth metal Inorganic materials 0.000 description 4
- 150000002910 rare earth metals Chemical class 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000003137 locomotive effect Effects 0.000 description 3
- 230000010349 pulsation Effects 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
Abstract
A coreless permanent magnet motor comprises a stator and a rotor, wherein the stator is a hollow cup type winding, the rotor has a double-rotor structure, an inner rotor of the motor is provided with a permanent magnet, the outer rotor adopts soft magnetic materials with good magnetic conducting performance, and the excitation magnetic field of the permanent magnet of the inner rotor enters into the outer rotor through a coil, so as to synchronizing the outer rotor and the excitation magnetic field, thus the eddy current loss is reduced, and the efficiency is improved. The coreless permanent magnet motor reduces the iron loss of the high-speed motor, improves the power density of the motor, reduces torque ripple, and solves the heating problem of the motor at high speed.
Description
Technical field
The utility model relates to a kind of coreless permanent magnet motor, and especially a kind of birotor permanent magnetic does not have the iron core synchronous machine, belongs to machine field.
Background technology
The high speed coreless permanent magnet motor is compared with conventional motors, energy-saving material-saving, excellent performance; Compare with having of present advanced person rare-earth permanent-magnet electric machine unshakable in one's determination, efficient is higher, weight is lighter, stability is better.Common apparatus such as the blower fan that the rare earth permanent magnet iron-core less motor can be applicable to have a large capacity and a wide range, water pump, compressor, also can be used on fields such as electric automobile, wind power generation, Digit Control Machine Tool, oil-field oil pumper, mobile power station, and advantageous advantage is arranged, development prospect is wide.According to initial estimate, if having 1/3 to substitute in the newly-increased motor, nearly 50,000,000,000 kilowatt hours of can economizing on electricity every year, 500,000 tons of save silicon steel discs, 20,000 tons of copper can be created nearly 10,000,000,000 yuan output value, and economic benefit and social benefit are very considerable.It is predicted that China's pure electric automobile output will be above 10% of passenger car total output in 2015, year power consumption surpasses 20,000,000,000 kilowatt hours.Rare earth permanent magnet iron-core less motor efficient is higher, and volume is littler, and is more obvious than present most advanced suitable permanent magnetic brushless technical advantage in the electric automobile field.According to conservative measuring and calculating, rare earth permanent magnet iron-core less motor large-scale application on electric automobile, by 2015, a year economize on electricity surpassed 1,200,000,000 kilowatt hours.There is this novel product of 1/3rd usefulness to substitute in the motor as increasing newly, nearly 50,000,000,000 kilowatt hours of can economizing on electricity every year, 500,000 tons of save silicon steel discs, 20,000 tons of copper can be created nearly 10,000,000,000 yuan output value, and economic benefit and social benefit are very considerable.
On the other hand, existing coreless permanent magnet synchronous machine because the existence of the problems such as high temperature under eddy current loss, leakage field and the high speed rotating, makes the power density of motor that the possibility of further lifting still be arranged.Therefore, how to improve the electromagnetic efficiency of motor, reduce the loss that exists in the machine operation, become a problem of this area staff's common concern.
The utility model content
In view of this, the purpose of this utility model is to propose a kind of new coreless permanent magnet motor, and this coreless permanent magnet motor can reduce the iron loss of high-speed electric expreess locomotive, simultaneously the power density of the motor of Ti Gaoing, reduce torque pulsation, solve the problem that motor generates heat down at a high speed.
A kind of coreless permanent magnet motor according to the purpose of this utility model proposes comprises:
Stator, this stator comprise the drag cup that is formed by a plurality of winding coil cast, and this drag cup is around the machine shaft setting;
Internal rotor is arranged on described stator interior, and this internal rotor comprises the spoke that is fixed on the machine shaft, is installed in the rotor yoke iron on the described spoke, and is fixed on the permanent magnet on this rotor yoke iron;
External rotor, this external rotor include external rotor cup tube that soft magnetic material constitutes and described external rotor cup tube are fixed on external rotor flange on the machine shaft, and described external rotor cup tube design is in the stator outside, and with the synchronous coaxial rotation of described internal rotor.
Preferably, described stator also comprises stator forward flange and stator rear flange, and the drag cup of described stator and this stator forward flange, stator rear flange are bonded to an integral body with epoxy glue.
Preferably, the stator rear flange is fixed on the machine shaft by one group of deep groove ball bearing respectively behind the described stator forward flange.
Preferably, mode sticking beyond the described permanent magnet is fixed on the described rotor yoke iron, and perhaps described permanent magnet is embedded on the described rotor yoke iron.
Preferably, described external rotor cup tube is connected on the external rotor flange by epoxy glue, and interference fit between the two.
Preferably, described external rotor flange is fixed on the machine shaft by radially a tight fixed bolt, and interference fit between the two.
Preferably, this motor comprises that also described position sensing system comprises encoder retainer, encoder magnetic guiding loop and encoder magnet steel ring for the position sensing system of internal rotor rotating cycle statistics.
Preferably, the slot number of described stator and internal rotor cooperates that to satisfy pitch be 1 condition.
Preferably, the slot number coordinated scheme of described stator and internal rotor is a kind of in 8 utmost points, 9 grooves, 6 grade of 9 groove or 8 utmost points, 12 grooves.
Coreless permanent magnet motor of the present utility model, stator is cup type winding, rotor is dual-rotor structure, the internal rotor of motor is installed permanent magnet, external rotor adopts magnetic conduction soft magnetic material preferably, and internal rotor permanent-magnetic body excitation field enters external rotor by coil, makes external rotor and excitation field synchronous, reduce eddy current loss, improved efficient.The utility model has reduced the iron loss of high-speed electric expreess locomotive, and the power density of the motor of Ti Gaoing reduces torque pulsation simultaneously, solves the problem that motor generates heat down at a high speed, has proposed new technical scheme.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 has provided the structural representation of the utility model coreless permanent magnet motor.
1. permanent magnet 2. rotor yoke irons 3. stator forward flanges 4. encoder retainers 5 encoder magnetic guiding loops 6. encoder magnet steel rings 7. machine shafts 8 rotor spokes 9. stator drag cups 10. external rotor cup tubes 11. external rotor flanges 12. stator rear flanges 13. deep groove ball bearings 14. back-up rings 15. adjusting pads 16. holding screws
Embodiment
Along with the development in electric automobile field, also increasing for the demand of high speed coreless permanent magnet motor.As the replacement scheme of permanent magnetic brushless, coreless permanent magnet motor has bigger advantage in cost of manufacture and energy consumption saving, can bring more economic benefit and social benefit.
Rotating speed and the power density of the utility model in order to improve coreless permanent magnet motor, adopted dual-rotor structure, stator is drag cup structure, and permanent magnet excitation magnetic field is by the drag cup coil on the internal rotor, enter in the permeability magnetic material of external rotor, form the closed-loop path, this structure is synchronous at inner and outer rotors, does not almost have iron loss on external rotor, reduced the leakage field of motor, main flux is increased, and having reached increases the purpose of air-gap field, and then has improved the power density of motor.
The motor primary structure of realizing above-mentioned technique effect comprises:
Stator, this stator comprise the drag cup that is formed by a plurality of winding coil cast, and this drag cup is around the machine shaft setting;
Internal rotor is arranged on described stator interior, and this internal rotor comprises the spoke that is fixed on the machine shaft, is installed in the rotor yoke iron on the described spoke, and is fixed on the permanent magnet on this rotor yoke iron;
External rotor, this external rotor include external rotor cup tube that soft magnetic material constitutes and described external rotor cup tube are fixed on external rotor flange on the machine shaft, and described external rotor cup tube design is in the stator outside, and with the synchronous coaxial rotation of described internal rotor.
Below, will by reference to the accompanying drawings the technical solution of the utility model be done concrete description.
See also Fig. 1, Fig. 1 is the schematic cross-section of coreless permanent magnet motor of the present utility model.As shown in the figure, this coreless permanent magnet motor realizes driving the purpose of load by the rotation of machine shaft 7.This machine shaft 7 is extended to stator rear flange 12 directions by the center of external rotor flange 11, and stretches out these stator rear flange 12 formation and rotate output.This motor mainly comprises:
Stator, this stator comprise the drag cup 9 that is formed by a plurality of winding coil cast, and this drag cup 9 arranges around machine shaft 7, and be fixing by the epoxy glue cast between each winding coil.Slot number between stator and the internal rotor cooperates can multiple scheme, yet the pitch that preferably satisfies between the two is 1, is a kind of in 8 utmost points, 9 grooves, 6 grade of 9 groove or 8 utmost points, 12 grooves such as the slot number coordinated scheme.
Stator also comprises stator forward flange 11 and stator rear flange 12, and drag cup 9 and this stator forward flange 11, the stator rear flange 12 usefulness epoxy glues of stator are bonded to an integral body.This integral body makes stator to be fixed in the motor, and and internal rotor and external rotor between keep certain position relation.Concrete, this stator forward flange 11 and stator rear flange 12 are fixed on the deep groove ball bearing 13 of front and back by one group of back-up ring 4 and adjusting pad 5 respectively, machine shaft 7 is fixed on these former and later two deep groove ball bearings 13, makes this machine shaft 7 to realize rolling with stator and is connected.Wherein stator rear flange 12 is near a side of machine shaft 7 outputs, and the axle center of satisfying stator drag cup 9 overlaps with machine shaft 7.
Internal rotor is arranged on the inside of said stator, and this internal rotor comprises the rotor spoke 8 that is fixed on the machine shaft 7, is installed in the rotor yoke iron 2 on the rotor spoke 8, and is fixed on the permanent magnet 1 on this rotor yoke iron 2.Rotor spoke 8 is selected around machine shaft 7, and rotor yoke iron 2 is installed on the outer ledge place of this rotor spoke 8, and permanent magnet 1 can be fixed on the described rotor yoke iron 2, such as boning with epoxy glue by outer sticking mode; Also can directly permanent magnet 1 be embedded on the described rotor yoke iron 2.
External rotor, this external rotor include external rotor cup tube 10 that soft magnetic material constitutes and this external rotor cup tube 10 are fixed on external rotor flange 11 on the machine shaft 7.This external rotor cup tube 10 is connected on the external rotor flange 11 by epoxy glue, and interference fit between the two.11 of external rotor flanges are fixed on the machine shaft by one group of tight fixed bolt 16 radially, and interference fit between the two.These external rotor cup tube 10 designs are in the stator outside, and this external rotor cup tube 10 that its size can be inserted in stator drag cup 9 and can make gets final product around these stator drag cup 9 rotations.Because tightening cooperates between external rotor and the machine shaft 7, so external rotor can guarantee and the synchronous coaxial rotation of internal rotor.
This motor comprises that also described position sensing system comprises encoder retainer 4, encoder magnetic guiding loop 5 and encoder magnet steel ring 6 for the position sensing system of internal rotor rotating cycle statistics and the detection of internal rotor position of rotation.Wherein encoder retainer 4 is fixed on the deep groove ball bearing 13, and encoder magnetic guiding loop 5 is fixed on this encoder retainer 4, and 6 on encoder magnet steel ring is fixed on the machine shaft 7 and with this encoder magnetic guiding loop 5 and forms relative rotation.
During work, in a plurality of winding coils of motor stator drag cup 9, produce the magnetic field interaction that rotating magnetic field and permanent magnet produce behind the feeding electric current, thereby motor shaft 7 is rotated, realize the purpose of driving load.The excitation field that permanent magnet 1 sends on the internal rotor is by the coil of drag cup 9, enter in the permeability magnetic material of external rotor, form the closed-loop path, this structure is synchronous at inner and outer rotors, on external rotor, almost do not have iron loss, reduced the leakage field of motor, main flux is increased, having reached increases the purpose of air-gap field, and then has improved the power density of motor.
In sum, the utility model proposes a kind of coreless permanent magnet motor, stator is drag cup type winding, rotor is dual-rotor structure, and the internal rotor of motor is installed permanent magnet, and external rotor adopts magnetic conduction soft magnetic material preferably, internal rotor permanent-magnetic body excitation field enters external rotor by coil, make external rotor and excitation field synchronous, reduce eddy current loss, improved efficient.The utility model has reduced the iron loss of high-speed electric expreess locomotive, and the power density of the motor of Ti Gaoing reduces torque pulsation simultaneously, solves the problem that motor generates heat down at a high speed.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to embodiment illustrated herein, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the utility model.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from spirit or scope of the present utility model in other embodiments herein.Therefore, the utility model will can not be restricted to embodiment illustrated herein, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a coreless permanent magnet motor is characterized in that, comprising:
Stator, this stator comprise the drag cup that is formed by a plurality of winding coil cast, and this drag cup is around the machine shaft setting;
Internal rotor is arranged on described stator interior, and this internal rotor comprises the spoke that is fixed on the machine shaft, is installed in the rotor yoke iron on the described spoke, and is fixed on the permanent magnet on this rotor yoke iron;
External rotor, this external rotor include external rotor cup tube that soft magnetic material constitutes and described external rotor cup tube are fixed on external rotor flange on the machine shaft, and described external rotor cup tube design is in the stator outside, and with the synchronous coaxial rotation of described internal rotor.
2. coreless permanent magnet motor as claimed in claim 1, it is characterized in that: described stator also comprises stator forward flange and stator rear flange, the drag cup of described stator and this stator forward flange, stator rear flange are bonded to an integral body with epoxy glue.
3. coreless permanent magnet motor as claimed in claim 2, it is characterized in that: the stator rear flange is fixed on the machine shaft by one group of deep groove ball bearing respectively behind the described stator forward flange.
4. coreless permanent magnet motor as claimed in claim 1 is characterized in that: mode sticking beyond the described permanent magnet is fixed on the described rotor yoke iron, and perhaps described permanent magnet is embedded on the described rotor yoke iron.
5. coreless permanent magnet motor as claimed in claim 1, it is characterized in that: described external rotor cup tube is connected on the external rotor flange by epoxy glue, and interference fit between the two.
6. coreless permanent magnet motor as claimed in claim 1 is characterized in that: described external rotor flange is fixed on the machine shaft by radially a tight fixed bolt, and interference fit between the two.
7. coreless permanent magnet motor as claimed in claim 1 is characterized in that: this motor comprises that also described position sensing system comprises encoder retainer, encoder magnetic guiding loop and encoder magnet steel ring for the position sensing system of internal rotor rotating cycle statistics.
8. coreless permanent magnet motor as claimed in claim 1 is characterized in that: the slot number of described stator and internal rotor cooperates that to satisfy pitch be 1 condition.
9. coreless permanent magnet motor as claimed in claim 8 is characterized in that: the slot number coordinated scheme of described stator and internal rotor is a kind of in 8 utmost points, 9 grooves, 6 grade of 9 groove or 8 utmost points, 12 grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063143 CN203071777U (en) | 2013-02-04 | 2013-02-04 | Coreless permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320063143 CN203071777U (en) | 2013-02-04 | 2013-02-04 | Coreless permanent magnet motor |
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| Publication Number | Publication Date |
|---|---|
| CN203071777U true CN203071777U (en) | 2013-07-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320063143 Expired - Fee Related CN203071777U (en) | 2013-02-04 | 2013-02-04 | Coreless permanent magnet motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN203071777U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078459A (en) * | 2013-02-04 | 2013-05-01 | 苏州大学 | Coreless permanent magnet motor |
| CN107742963A (en) * | 2017-11-27 | 2018-02-27 | 湖北科技学院 | A kind of spinner motor |
| CN107994744A (en) * | 2018-01-02 | 2018-05-04 | 马永林 | A kind of list stator and double-rotor coaxial motor |
| CN110138118A (en) * | 2018-08-27 | 2019-08-16 | 胡茂忠 | A kind of generator of novel efficient |
-
2013
- 2013-02-04 CN CN 201320063143 patent/CN203071777U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103078459A (en) * | 2013-02-04 | 2013-05-01 | 苏州大学 | Coreless permanent magnet motor |
| CN107742963A (en) * | 2017-11-27 | 2018-02-27 | 湖北科技学院 | A kind of spinner motor |
| CN107742963B (en) * | 2017-11-27 | 2024-01-26 | 湖北科技学院 | A dual-rotor motor |
| CN107994744A (en) * | 2018-01-02 | 2018-05-04 | 马永林 | A kind of list stator and double-rotor coaxial motor |
| CN107994744B (en) * | 2018-01-02 | 2023-12-12 | 马永林 | Single-stator double-rotor coaxial motor |
| CN110138118A (en) * | 2018-08-27 | 2019-08-16 | 胡茂忠 | A kind of generator of novel efficient |
| CN110138118B (en) * | 2018-08-27 | 2021-03-19 | 胡茂忠 | Novel efficient generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130717 Termination date: 20160204 |