CN102386742A - Outer-rotor-type eccentric rotor variable reluctance motor - Google Patents
Outer-rotor-type eccentric rotor variable reluctance motor Download PDFInfo
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- CN102386742A CN102386742A CN2011103657261A CN201110365726A CN102386742A CN 102386742 A CN102386742 A CN 102386742A CN 2011103657261 A CN2011103657261 A CN 2011103657261A CN 201110365726 A CN201110365726 A CN 201110365726A CN 102386742 A CN102386742 A CN 102386742A
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Abstract
The invention discloses an outer-rotor-type eccentric rotor variable reluctance motor comprising an eccentric rotor, a stator, an exciting winding, a driving outer gear ring and a driven inner gear ring, wherein the stator comprises a salient stator and a shaft used for fixing the salient stator, the salient stator is provided with a plurality of stator salient poles which are uniformly arranged along the circumference and are outward, the exciting winding is wound onto the stator salient poles of the salient stator; the eccentric rotor is formed by laminating an annular punching piece made of a soft magnetic material; the driving outer gear ring and the eccentric rotor are fixedly arranged, the driven inner gear ring is fixed in a motor shell and is meshed with the driving outer gear ring; and the eccentric rotor is eccentric relative to the stator, so as to form the outer-rotor-type eccentric rotor variable reluctance motor. A radial force is used for operation and a rotor is lighter, thus the outer-rotor-type eccentric rotor variable reluctance motor disclosed by the invention has the advantages of high energy density, compact structure and excellent dynamic performance; and besides, a gradation breath structure is adopted, thus the output torque is stable, and vibration and noise are less.
Description
Technical field
The present invention relates to a kind of motor, relate in particular to the eccentric external-rotor-type eccentric rotor variable reluctance motor of a kind of relative stator and rotating motor housing, belong to the electric equipment field.
Background technology
Variable reluctance motor is a kind of novel buncher, and governing system has direct current concurrently, exchanges the advantage of two types of governing systems, is the latest generation stepless time adjustment system of frequency conversion speed-adjusting system, brushless DC motor governing system of continuing.It simple in structure firm, speed-regulating range width, speed adjusting performance is excellent, and in whole speed adjustable range, all has greater efficiency, and system reliability is high, is suitable for high-speed cruising, receives personage's in the industry extensive concern.
Usually variable reluctance motor comprises that stator and who is installed in the support has the outstanding magnetic pole of opening according to certain intervals with respect to the stator rotor rotated on stator and the rotor, and the number of magnetic poles of stator and rotor is placed with certain rules relatively.Attempt to rotate to when rotor and the magnetic circuit magnetic resistance is minimized or during the maximized position of stator winding inductance, variable reluctance motor produces reluctance force and produces torque and externally does work.
Yet, because the inherent shortcoming of traditional variable reluctance motor (torque ripple, iron loss and magnetic loss are big, noise is big), make the application of variable reluctance motor receive very big restriction; Big such as the control difficulty, the height of controlling cost, iron loss is big, or the like; In order to improve the defective of traditional variable reluctance motor, the countries in the world scholar has carried out positive research to the root and the improved measure of its defective, for reducing iron loss and energization density, has and takes single-phase multiple tooth short magnetic circuit structural.
For improve its torque fluctuations with and the vibration noise level, Chinese invention patent application: switched reluctance machines (number of patent application: 200680043128.X) improve noise level through the mode of optimizing the rotor magnetic pole structure; And the Chinese invention patent application: magnetic resistant electric motor with double stator switch (number of patent application: 200510037635.X) adopt double-stator structure to improve its torque ripple situation; But the source that the technical scheme that above two kinds of applications for a patent for invention are adopted is not all improved vibration noise, promptly the excessive while also is the radial load that flogs a dead horse.
Summary of the invention
The technical problem that the present invention solves provides a kind of external-rotor-type eccentric rotor variable reluctance motor of new structure, to reduce magnetic loss, improves electric efficiency and energy density and reduces the output torque fluctuation; Improve the useful life of motor simultaneously.
Be technical problem described in the technical solution background, the present invention adopts following technical scheme:
A kind of external-rotor-type eccentric rotor variable reluctance motor; Comprise eccentric rotor, stator and excitation winding and driving external toothing and receive ring gear that wherein, said stator comprises salient pole stator and axle; The salient pole stator is fixed in the periphery of axle; The periphery of said salient pole stator has that a plurality of excitation winding is wound on the stator salient poles along the evenly distributed stator salient poles of circumference, and each excitation winding constitutes a phase;
The annulus punching that described eccentric rotor is processed by soft magnetic material is overrided to form, and with respect to stator and rotating motor housing arranged off-centre, stator places in the eccentric rotor;
Drive middle part or two ends that external toothing is fixed in eccentric rotor; Be fixed in the rotating motor housing by ring gear; Described driving ring gear with receive external toothing always to keep interior engagement; And the eccentric rotor inner headed face always keeps nonslipping the contact with the stator periphery, two breath structures that ladder becomes that eccentric rotor inner headed face and stator outside is round-formed like this;
When excitation winding is switched on; Through the action of a magnetic field, drive eccentric rotor and rotate around stator, the eccentric rotor inner headed face always keeps nonslipping the contact with a place of stator periphery; Receive ring gear through driving the external toothing driving, rotate the output torque acting thereby drive rotating motor housing.
Wherein, described stator is in the described eccentric rotor.
Wherein, eccentric rotor axial line and stator and the certain distance of rotating motor housing axial line skew, promptly eccentric rotor is eccentric with respect to stator and rotating motor housing.
Wherein, the material that rotating motor housing adopts is indefinite, and it is connected through bearing with axle, and concentric with stator.
Wherein, the eccentric rotor annular punching of being processed by soft magnetic material is overrided to form.
Wherein, the punching that the salient pole stator is processed by soft magnetic material is overrided to form, and this punching periphery has several stator salient poles of evenly arranging along circumference.
Wherein, the notch of salient pole stator is mounted with one or polylith permanent magnet.
Wherein, the notch of salient pole stator can install and fix the separated magnetic patch that non-magnet material is processed.
Wherein, the driving external toothing that is fixedly installed in the eccentric rotor two ends can keep being rotationally connected through two bearings and axle.
Wherein, keep to drive in external toothing and axle two bearings free to rotate, a bearing is supported the revolution of eccentric rotor around axle, and bearing is supported the autobiography of eccentric rotor around self axis, and two bearings are installed through a bearing bracket stand.
Wherein, the salient pole stator can be made up of the stator segment of segmentation.
Compared with prior art, the present invention has following beneficial effect:
External-rotor-type eccentric rotor variable reluctance motor of the present invention, stator comprise salient pole stator and axle, and place in the eccentric rotor; The annular punching that eccentric rotor is processed by soft magnetic material is overrided to form, and itself and stator and rotating motor housing are eccentric; Like this, the inner headed face of eccentric rotor always has a place to keep nonslipping with the stator periphery to contact, and drives external toothing and receive ring gear also always to keep engagement; When load, the excitation winding energising generates an electromagnetic field, and drives eccentric rotor, through driving external toothing and receiving ring gear to drive externally output acting of rotating motor housing rotation; Collection magnetic function through eccentric rotor; Make leakage field reduce; Through the breath structure that the ladder between eccentric rotor and the stator becomes, obtain counter balance torque output, and because radial load is used for work and lighter eccentric rotor; So external-rotor-type eccentric rotor variable reluctance motor of the present invention is compared the conventional switch reluctance motor and is possessed higher energy density, higher operating efficiency, better dynamic characteristic and higher output torque quality.
Description of drawings
Fig. 1 is the external-rotor-type eccentric rotor variable reluctance motor structural representation of the present invention's first specific embodiment;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is that the driving external toothing of the external-rotor-type eccentric rotor variable reluctance motor of the present invention's second specific embodiment is fixed in the two ends of eccentric rotor and receives ring gear to be fixed in the structural representation at rotating motor housing two ends;
Fig. 4 is the structural scheme of mechanism that is wound with excitation winding on the salient pole stator of external-rotor-type eccentric rotor variable reluctance motor of the present invention's the 3rd specific embodiment;
Fig. 5 is the B-B sectional view of Fig. 4;
Fig. 6 is the external-rotor-type eccentric rotor variable reluctance motor segmentation salient pole stator structure sketch map of the present invention's the 4th specific embodiment.
Embodiment
With reference to figure 1, this figure is the first specific embodiment structural representation of a kind of external-rotor-type eccentric rotor of the present invention variable reluctance motor.
The external-rotor-type eccentric rotor variable reluctance motor of present embodiment; Include stator (1), eccentric rotor (4), excitation winding (8A, 8B, 8C, 8D, 8E, 8F) and driving external toothing (7) and receive ring gear (10); Stator (1) comprises salient pole stator (2) and axle (3), and the outer surface that salient pole stator (2) is fixed in axle (3) forms stator (1); Excitation winding is wound on the stator salient poles (9-1,9-2,9-3,9-4,9-5,9-6), and wherein each excitation winding is a phase, that is, this specific embodiment external-rotor-type eccentric rotor variable reluctance motor is a six phase; In this specific embodiment, a stator salient poles is arranged between every phase, do not twine any winding on this stator salient poles; Each notch on the salient pole stator (2) is mounted with a permanent magnet or three permanent magnets (6); Drive the middle part that external toothing (7) is fixed in eccentric rotor, be fixed in the rotating motor housing (11) by ring gear (10), drive external toothing and always keep interior engagement with receiving ring gear; Eccentric rotor (4) and stator (1) arranged off-centre; In this specific embodiment; Eccentric distance between the axial line O ' of eccentric rotor and the center line O of stator is L; The inner surface S2 of eccentric rotor and the outer surface S1 of stator (1) always keep not contacting slidably, like this, have formed two breath structures that ladder becomes between S1 and the S2; Rotating motor housing (11) forms through two bearings (5-1,5-2) with axle (3) and is rotationally connected;
In this specific embodiment, eccentric rotor (4) and stator (1) and rotating motor housing (11) arranged off-centre drive external toothing and always keep engagement with receiving ring gear; The eccentric rotor inner headed face always keeps nonslipping the contact with the stator periphery; The position contacting both sides are that the ladder of symmetry becomes the breath structure, and during work, the excitation winding energising produces excitation field; This magnetic field always forms the loop through salient pole stator, breath and eccentric rotor; Drive the actuating force that eccentric rotor rotates around stator thereby form, finally through driving external toothing and receive ring gear, externally output acting; Two energisings of conducting when identical that also can be adjacent are to obtain bigger moment of torsion output;
In the work; Permanent magnet (6) magnetic field through notch; Eccentric rotor forms fricton-tight the contact with the stator periphery all the time, so also lets the driving external toothing that is fixedly installed in eccentric rotor periphery middle part always keep engagement with the ring gear that receives that is fixed in the rotating motor housing;
With reference to figure 2, be the A-A sectional view of Fig. 1;
Between axle (3) and the rotating motor housing (11) through free to rotate being connected of bearing (5-1,5-2) formation.Be fixed in the rotating motor housing (11) by ring gear (10), and drive the middle part that external toothing (7) is fixed in the periphery S3 of eccentric rotor.
With reference to figure 3, be that the driving external toothing of the second specific embodiment external-rotor-type eccentric rotor variable reluctance motor is mounted on the eccentric rotor two ends and receives ring gear to be mounted on the structural representation at rotating motor housing two ends.
Drive the two ends that external toothing (90-1,90-2) is fixed in eccentric rotor (111); Receive ring gear (100-1,100-2) to be fixed in the two ends of rotating motor housing (110); And drive external toothing and keep engagement with receiving ring gear; Drive external toothing (90-2) and form free to rotate being connected with axle through two bearings (60-2,80-2); These two bearings are installed through bearing bracket stand (70-2), drive external toothing (90-1) and form free to rotate being connected through two bearings (60-1,80-1) with axle, and these two bearings are installed through bearing bracket stand (70-1); Two rotations of supporting rotor around self axis in four bearings, other two bearings are supported the revolution of rotors around axis stator; During work; Eccentric rotor (111) rotates around stator; Receive ring gear through driving the external toothing driving; While driving shaft bolster (70-1,70-2), purpose drives external toothing and receives ring gear always to keep engagement for making, and the inner surface of eccentric rotor always has a place to form nonslipping the contact with stator external surface;
Should be noted that content that this specific embodiment discloses can be applicable to any situation of disclosed content.
With reference to figure 4, all be wound with the structural representation of excitation winding on the salient pole stator for the 3rd specific embodiment external-rotor-type eccentric rotor variable reluctance motor of the present invention.
Stator (100) comprises salient pole stator (200) and axle (300); Stator salient poles on the salient pole stator (200) (200-1,200-2,200-3,200-4) all is wound with excitation winding (400-1,400-2,400-3,400-4), and notch is installed with a permanent magnet or polylith permanent magnet or NULL (600);
With reference to figure 5, be the B-B schematic cross-section of Fig. 4.
Drive the middle part that external toothing (700) is fixed in eccentric rotor (800); And be fixed in that the ring gear (1000) that receives at middle part keeps meshing in the rotating motor housing (1100); The inner headed face of eccentric rotor (800) always keeps nonslipping with the periphery of stator (100) and contacts, and rotating motor housing (1100) forms free to rotate being connected through bearing (500) with axle;
In this specific embodiment, when work, the mode of its output torque acting is identical with first specific embodiment, repeats no more here; Different is, in this specific embodiment, each stator salient poles on the salient pole stator all is wound with excitation winding, and neither one stator salient poles in the middle of the excitation winding.
With reference to figure 6, adopt the structural representation of segmentation salient pole stator for the external-rotor-type eccentric rotor variable reluctance motor of the present invention's the 4th specific embodiment.
The salient pole stator is interfixed through dovetail groove by four " recessed " shape stator segments (1600-1,1600-2,1600-3,1600-4) and forms, and is also fixing through dovetail groove and axle simultaneously;
Should be noted that content that this specific embodiment discloses can be applicable to all situations of disclosed content, simultaneously, also can adopt other sectionalized stator structures to interfix and form the salient pole stator; Other identical with aforementioned specific embodiment repeated no more here.
Though preferred embodiment of the present invention has disclosed as above, the present invention is not limited to the foregoing description, and the technical staff, can change disclosed configuration without departing from the invention when understanding; Therefore, top several embodiment only are used for example and are not used in the restriction purpose; It will be apparent to those skilled in the art that, under the situation of not obvious change aforesaid operations, can make amendment configuration.
Claims (10)
1. external-rotor-type eccentric rotor variable reluctance motor; Include eccentric rotor, stator, excitation winding and driving external toothing and receive ring gear; It is characterized in that the annular punching that said eccentric rotor is processed by soft magnetic material is overrided to form, stator is in the eccentric rotor; Eccentric rotor and stator arranged off-centre; Make the inner headed face of eccentric rotor always have a place to keep nonslipping and contact,, formed two breath structures that ladder becomes between eccentric rotor inner headed face and the stator periphery through this contact with a place of the periphery of stator;
Stationary part comprises the salient pole stator and the fixing axle of salient pole stator; The punching that the salient pole stator is processed by soft magnetic material is overrided to form; The periphery of salient pole stator has several along the stator salient poles that circumference is evenly arranged, excitation winding is wound on the stator salient poles, and the salient pole stator is fixed on the axle;
Drive external toothing and fixed with eccentric rotor and rotating motor housing respectively by ring gear, and keep engagement;
During loaded work piece, said excitation winding energising, said eccentric rotor rotates around said stator; Simultaneously around self axis autobiography; In rotation process, the inner headed face of said eccentric rotor always has a place to keep nonslipping with a place of the outer garden face of said stator to contact, and drives external toothing and receive ring gear always to have a place to keep meshing; Like this, drive the said ring gear that receives through said driving external toothing and externally export acting.
2. external-rotor-type eccentric rotor variable reluctance motor according to claim 1; It is characterized in that; Said stator is fixedly formed by salient pole stator and axle, and salient pole stator periphery wherein has several stator salient poles of evenly arranging along circumference, and stator places in the eccentric rotor.
3. external-rotor-type eccentric rotor variable reluctance motor according to claim 1; It is characterized in that; Said excitation winding is wound on the stator salient poles, and when a stator salient poles was arranged between two said excitation winding, this said stator salient poles was not twined any coil windings.
4. external-rotor-type eccentric rotor variable reluctance motor according to claim 1 is characterized in that, each notch of described stator salient poles is installed with one or polylith permanent magnet or separated magnetic patch.
5. external-rotor-type eccentric rotor variable reluctance motor according to claim 1; It is characterized in that; Described eccentric rotor and described stator arranged off-centre; One place of the inner surface of eccentric rotor always forms nonslipping the contact with a place of stator external surface, and like this, eccentric rotor inner surface and stator outer surface have formed the breath structure of terraced change from position contacting.
6. according to claim 1 and 4 described external-rotor-type eccentric rotor variable reluctance motors, it is characterized in that described driving external toothing and eccentric rotor are fixed, and are positioned at the middle part of eccentric rotor, or be positioned at the two ends of eccentric rotor.
7. external-rotor-type eccentric rotor variable reluctance motor according to claim 6; It is characterized in that; The described driving external toothing that is fixed in the eccentric rotor two ends forms free to rotate being connected through two bearings and a bearing bracket stand with axle, wherein, and in two bearings; A revolution of supporting eccentric rotor around the stator axial line, a rotation of supporting eccentric rotor around self axial line; Two bearings are through a bearing bracket stand fixed installation.
8. according to claim 1 and 6 described external-rotor-type eccentric rotor variable reluctance motors, it is characterized in that, be fixed in the rotating motor housing by ring gear, and remain engagement with the driving external toothing.
9. according to claim 1 and 8 described external-rotor-type eccentric rotor variable reluctance motors; It is characterized in that; Rotating motor housing forms free to rotate being connected with axle through bearing; And rotating motor housing is concentric with stator, like this, can freely rotate around axle by ring gear and rotating motor housing.
10. external-rotor-type eccentric rotor variable reluctance motor according to claim 1 is characterized in that, the salient pole stator in the stator can be the stator segment of segmentation and forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103657261A CN102386742A (en) | 2011-11-18 | 2011-11-18 | Outer-rotor-type eccentric rotor variable reluctance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103657261A CN102386742A (en) | 2011-11-18 | 2011-11-18 | Outer-rotor-type eccentric rotor variable reluctance motor |
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| CN102386742A true CN102386742A (en) | 2012-03-21 |
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| CN2011103657261A Pending CN102386742A (en) | 2011-11-18 | 2011-11-18 | Outer-rotor-type eccentric rotor variable reluctance motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664098A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit reluctance type rotary transformer with multiple pairs of poles for space manipulator |
| CN102664099A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator |
| CN102664096A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor salient pole reluctance type multi-pole rotary transformer |
| CN111799973A (en) * | 2019-04-01 | 2020-10-20 | 通用汽车环球科技运作有限责任公司 | Cycloidal reluctance motor with rotor electromagnets |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645712A (en) * | 2005-01-07 | 2005-07-27 | 南京航空航天大学 | Magnetic resistant electric motor with double stator switch |
| CN201994733U (en) * | 2011-04-14 | 2011-09-28 | 周智庆 | Variable reluctance motor and rotor structure thereof |
| CN202713104U (en) * | 2011-11-18 | 2013-01-30 | 何嘉颖 | Outer rotor-type eccentric rotor variable-magnetic resistance motor |
-
2011
- 2011-11-18 CN CN2011103657261A patent/CN102386742A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1645712A (en) * | 2005-01-07 | 2005-07-27 | 南京航空航天大学 | Magnetic resistant electric motor with double stator switch |
| CN201994733U (en) * | 2011-04-14 | 2011-09-28 | 周智庆 | Variable reluctance motor and rotor structure thereof |
| CN202713104U (en) * | 2011-11-18 | 2013-01-30 | 何嘉颖 | Outer rotor-type eccentric rotor variable-magnetic resistance motor |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102664098A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit reluctance type rotary transformer with multiple pairs of poles for space manipulator |
| CN102664099A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator |
| CN102664096A (en) * | 2012-06-06 | 2012-09-12 | 哈尔滨工业大学 | Outer rotor salient pole reluctance type multi-pole rotary transformer |
| CN102664099B (en) * | 2012-06-06 | 2014-03-12 | 哈尔滨工业大学 | Outer rotor axial magnetic circuit single-pole magnetic resistance type rotating transformer for space manipulator |
| CN111799973A (en) * | 2019-04-01 | 2020-10-20 | 通用汽车环球科技运作有限责任公司 | Cycloidal reluctance motor with rotor electromagnets |
| CN111799973B (en) * | 2019-04-01 | 2022-10-04 | 通用汽车环球科技运作有限责任公司 | Cycloidal reluctance motor with rotor electromagnets |
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