CN101976905B - Direct-drive composite permanent magnet motor - Google Patents
Direct-drive composite permanent magnet motor Download PDFInfo
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- CN101976905B CN101976905B CN 201010517794 CN201010517794A CN101976905B CN 101976905 B CN101976905 B CN 101976905B CN 201010517794 CN201010517794 CN 201010517794 CN 201010517794 A CN201010517794 A CN 201010517794A CN 101976905 B CN101976905 B CN 101976905B
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- permanent magnet
- rotor
- magnet motor
- magnetic gear
- motor
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Abstract
The invention relates to a direct-drive composite permanent magnet motor. The direct-drive composite permanent magnet motor comprises a self-controlled permanent magnet motor and a concentric magnetic gear, wherein the permanent magnet motor and the magnetic gear are assembled by adopting an axial serial structure, namely a high-performance magnetic gear consisting of double permanent magnet rotors and a reluctance-type stator and the self-controlled permanent magnet are connected coaxially. Power transmission between high-speed low-torque and low-speed high-torque is finished in the composite permanent magnet motor automatically without matching a mechanical gear box. The motor can be used as an electric motor as well as a generator.
Description
The application is that application number is 200810036366.9, and the applying date is on April 21st, 2008, is called dividing an application of " direct-drive composite permanent magnet motor ".
Technical field
The present invention relates to a kind of motor, be specifically related to a kind of direct-drive composite permanent magnet motor that is applicable to the slow-speed of revolution, large torque.
Background technology
Traditional motor driven systems is the combination of motor and mechanical variable speed device.But, the regular maintenance of mechanical transmission component (such as speed-changing gear box) and the replacing of vulnerable part need to be paid extra cost, and will be unusually expensive for the cost of its regular maintenance of long-distance running system (such as wind power generation, tidal power); Gap between the mechanical transmission component and frictional dissipation make high accuracy control be difficult to realize, have reduced reliability and the efficient of system and have produced noise; Motor and mechanical variable speed device also need larger installing space.
Summary of the invention
The purpose of this invention is to provide a kind of compact conformation, torque density height, can be used for the direct-drive composite permanent magnet motor of the slow-speed of revolution, large torque.It gives up mechanical transmission component, has improved the transmission efficiency of system, reduces volume, greatly reduces maintenance cost and noise.
To achieve these goals, design of the present invention is: high performance magnetic gear and autocontrol magneto are adopted the telescoping structure set or adopt the set of axial series structure, consist of one and be suitable for the directly compound high torque density magneto of driving, has the double-stator and double-rotor structure, i.e. multisegmented rotor and few utmost point rotor structure, reluctance type stator and armature stator structure.
According to above-mentioned inventive concept, the present invention adopts following technical proposals:
A kind of direct-drive composite permanent magnet motor, comprise an autocontrol magneto and a concentric type magnetic gear, it is characterized in that the concentric double-stator and double-rotor structure that assembles of described autocontrol magneto and concentric type magnetic gear, namely adopt the telescoping structure set to consist of the concentric type structure by the external rotor of magnetic gear and internal rotor and the internal stator of external stator and magneto.
Above-mentioned external rotor is cup rotor, is fixedly connected with central rotating shaft at the bottom of its glass type; External stator is cylindrical body, and the one end directly is fixedly connected with an end cap of support, and the other end is fixedly connected with the inner of internal stator by a radial transmission line; Internal rotor also is cup rotor, and its two ends are supported on the inside and outside two ends of internal stator by two bearings; The outer end of internal stator is fixedly connected with an end cap of support, settles central rotating shaft in the centre bore of internal stator; One end of central rotating shaft is supported on the outer end of internal stator by bearing, and the other end is supported on by bearing in the endoporus of another end cap of support.
Circumferential uniform P on the cup type body of above-mentioned internal rotor
1Right permanent magnet, the circumferential uniform setting-in P of the inwall of external rotor cup type body
2To permanent magnetic steel, and P
1＜P
2External stator is the reluctance type stator, and Ns the circumferentially uniform iron core teeth utmost point arranged on it, and namely the circumferential uniform fluting of cup shaped iron core is filled non-magnet material in the groove, should satisfy Ns=P
1+ P
2Or Ns=P
2-P
1This son is made of coiling armature winding on the inner-stator iron core.
Above-mentioned external rotor permanent magnet magnet steel adopts high-performance rare-earth permanent magnet material, and external rotor is surface mounted formula structure, and internal rotor is surface mounted formula or built-in radial formula or built-in tangential formula.
The iron core of above-mentioned external stator is evenly slotted, and fills non-magnet material in the groove.
Above-mentioned internal stator armature winding adopts the fractional slot winding structure.
A kind of direct-drive composite permanent magnet motor, comprise an autocontrol magneto and a concentric type magnetic gear, it is characterized in that magneto and magnetic gear adopt the set of axial series structure, namely the permanent magnetism birotor links to each other with the autocontrol magneto is coaxial with the high performance magnetic gear that the reluctance type stator consists of.
The present invention has following apparent outstanding substantive distinguishing features and remarkable advantage compared with prior art:
1. adopt magneto and magnetic gear to assemble one, eliminated noise, vibration and the corresponding loss of Mechanical Contact;
2. greatly reduce maintenance workload and expense, improved reliability;
3. intrinsic overload protection characteristics;
4. compact conformation has high torque density and High Power Factor.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is A-A place cutaway view among Fig. 1.
Fig. 3 is built-in magnet steel inner rotor core schematic diagram.
Fig. 4 is tangential magnet steel inner rotor core schematic diagram.
Fig. 5 is the structural representation of another embodiment of the present invention.
Embodiment
Embodiment one: referring to Fig. 1 and Fig. 2, this direct-drive composite permanent magnet motor comprises an autocontrol magneto and a concentric type magnetic gear, autocontrol magneto and concentric type magnetic gear assemble dual-rotor structure, namely by the external rotor 3 of magnetic gear and internal rotor 8 and the internal stator 12 of external stator 7 and magneto, adopt the telescoping structure set to consist of the concentric type structure.
Described external rotor 3 is cup rotor, is fixedly connected with central rotating shaft 11 at the bottom of its glass type; External stator 7 is cylindrical body, and the one end directly is fixedly connected with an end cap 2b of support 1, and the other end is fixedly connected with the inner of internal stator 12 by a radial transmission line 6; Internal rotor 8 also is cup rotor, and its two ends are supported on the inside and outside two ends of internal stator by two bearings; The outer end of internal stator 12 is fixedly connected with an end cap 2b of support 1, settles central rotating shaft 11 in the centre bore of internal stator 12; One end of central rotating shaft 11 is supported on the outer end of internal stator 12 by bearing, and the other end is supported on by bearing in the endoporus of another end cap 2a of support 1.
Magneto internal stator 10 is that slotted armature is unshakable in one's determination, embeds heterogeneous symmetrical armature winding 9 in the groove.The polyphase armature winding passes to symmetrical current, produces rotating magnetic field at interior air gap, with the magnetic field interaction generation electromagnetic torque of permanent magnetism internal rotor 8, realizes the energy transmission.Internal rotor permanent-magnetic body number of pole-pairs is P
1, the inner surface of external rotor 3 is placed with permanent magnetic steel 4, and number of pole-pairs is P
2, and P
1＜P
2Therefore, internal rotor 8 is high speed rotor, and external rotor 3 is the low speed rotor.Between internal rotor 8 and external rotor 3, be reluctance type external stator 7, on the reluctance type stator N arranged
sThe individual equally distributed iron core teeth utmost point 5, namely circumferential uniform fluting without conductor, in order to increase the intensity of external stator 7, is filled non-magnet material in the groove in the groove.Two rotors and external stator 7 have formed a high performance magnetic gear.The septum interalveolare of external stator 7 distributes and causes that air-gap permeance produces cyclic variation along circumference, thereby the permanent magnetism air-gap field on external stator 7 inside and outside both sides is played modulating action.The number of pole-pairs P of internal rotor 8
1Number of pole-pairs P with external rotor 3
2And the tooth number of poles N of external stator 7
sNeed to satisfy certain relation: N
s=P
1+ P
2(or N
s=P
2-P
1), thereby make two rotor space air-gap field modulation first-harmonics identical, realize the transmission of torque and rotational speed by the coupling effect of inner and outer rotors permanent magnetic field.The magnetic gear gearratio is G=P
2/ P
1
In the magneto, internal rotor 8 is not only the part of magnetic gear, consists of the autocontrol magneto with internal stator 10 simultaneously.Internal rotor 8 can have various ways, such as surface-type, built-in radial formula, built-in tangential formula (referring to Fig. 3 and Fig. 4).
Magneto can be made motor or generator operation.Be used as motor when operation, internal stator armature winding 9 is by inverter power supply, determines to open and turn-offs according to the position signalling of internal rotor 8.If the employing hall sensor signal, motor moves as brushless, permanently excited direct current motor; If adopt the high precision position encoder, motor can be used as the permanent synchronous servo motor operation.The rotating speed of internal rotor 8 is high, is conducive to improve the power density of motor.By the magnetic Field Coupling effect of internal rotor 8 and external rotor 3, realize the transmission of torque and rotational speed, external rotor 3 is with the slow-speed of revolution, large torque output.When as generator operation, external rotor 3 utilizes the magnetic Field Coupling effect by prime mover driven, drives internal rotor 8 rotations, and the permanent magnetic field of internal rotor 8 sends alternating current at the armature winding 9 internal induction electromotive force of internal stator 10.
Embodiment two: referring to Fig. 5, directly driving this composite type permanent magnet motor is to make the axial series form, is equivalent to an autocontrol magneto and coaxial linking of magnetic gear.The autocontrol magneto is the internal rotor form, the internal rotor 8 of namely going up example is divided into two rotors: autocontrol permanent magnet machine rotor 8a and magnetic gear internal rotor 8b, the space that autocontrol permanent magnet machine rotor 8a has is large, and form is more flexible, is easy to make the wide range speed control magneto.
Claims (1)
1. direct-drive composite permanent magnet motor, comprise an autocontrol magneto and a concentric type magnetic gear, it is characterized in that magneto and magnetic gear adopt the set of axial series structure, namely the high performance magnetic gear of permanent magnetism birotor and reluctance type stator formation and autocontrol magneto co-axial shafts are to series winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010517794 CN101976905B (en) | 2008-04-21 | 2008-04-21 | Direct-drive composite permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010517794 CN101976905B (en) | 2008-04-21 | 2008-04-21 | Direct-drive composite permanent magnet motor |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100363669A Division CN101330234A (en) | 2008-04-21 | 2008-04-21 | Direct-drive composite type permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101976905A CN101976905A (en) | 2011-02-16 |
| CN101976905B true CN101976905B (en) | 2013-03-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010517794 Active CN101976905B (en) | 2008-04-21 | 2008-04-21 | Direct-drive composite permanent magnet motor |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104648111A (en) * | 2013-11-21 | 2015-05-27 | 扬州市新港电机有限公司 | Power driving and power generation integrated stepless speed regulating system of automobile |
| CN105863566A (en) * | 2015-01-23 | 2016-08-17 | 宁波天安磁性传动科技有限公司 | Composite permanent magnet motor direct driven walking beam type oil pumping machine |
| GB2539202A (en) * | 2015-06-08 | 2016-12-14 | Elumotion Ltd | Rotary actuator |
| WO2017062654A1 (en) * | 2015-10-09 | 2017-04-13 | The Texas A&M University System | Method and apparatus for compact axial flux magnetically geared machines |
| CN106961194B (en) * | 2016-01-12 | 2019-07-09 | 高学才 | Electronic automobile-used Halbach birotor slides wide range speed control permanent magnetic wheels paddy electricity motivation certainly |
| CN109600017A (en) * | 2018-11-21 | 2019-04-09 | 东华大学 | A method of improving magnetic gear output torque density |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6794781B2 (en) * | 2002-04-13 | 2004-09-21 | Rolls-Royce Plc | Compact electrical machine |
| CN2918894Y (en) * | 2006-05-16 | 2007-07-04 | 贵州大学 | Electromagnetic gear |
| GB2437568A (en) * | 2006-04-24 | 2007-10-31 | Univ Sheffield | Electric machine having elements interacting in a magnetically geared manner |
-
2008
- 2008-04-21 CN CN 201010517794 patent/CN101976905B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6794781B2 (en) * | 2002-04-13 | 2004-09-21 | Rolls-Royce Plc | Compact electrical machine |
| GB2437568A (en) * | 2006-04-24 | 2007-10-31 | Univ Sheffield | Electric machine having elements interacting in a magnetically geared manner |
| CN2918894Y (en) * | 2006-05-16 | 2007-07-04 | 贵州大学 | Electromagnetic gear |
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|---|---|
| CN101976905A (en) | 2011-02-16 |
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| TR01 | Transfer of patent right |
Effective date of registration: 20200713 Address after: 322118 Hengdian Electronic Industry Park, Jinhua, Zhejiang, Dongyang Patentee after: HENGDIAN GROUP INNUOVO ELECTRIC Co.,Ltd. Address before: 322118 Zhejiang city of Dongyang province Hengdian Electronic Industrial Park Hengdian group innuovo Electric Co. Ltd. Patentee before: Xu Xiaohua |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: Direct drive composite permanent magnet motor Effective date of registration: 20201106 Granted publication date: 20130320 Pledgee: Dongyang sub branch of Bank of China Ltd. Pledgor: HENGDIAN GROUP INNUOVO ELECTRIC Co.,Ltd. Registration number: Y2020330000908 |