CN100561829C - Magnetic flux inverse type electric motor - Google Patents
Magnetic flux inverse type electric motor Download PDFInfo
- Publication number
- CN100561829C CN100561829C CNB2007100613763A CN200710061376A CN100561829C CN 100561829 C CN100561829 C CN 100561829C CN B2007100613763 A CNB2007100613763 A CN B2007100613763A CN 200710061376 A CN200710061376 A CN 200710061376A CN 100561829 C CN100561829 C CN 100561829C
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- field spider
- iron core
- stator
- magnetic flux
- electric motor
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Abstract
A kind of magnetic flux inverse type electric motor, its core include the electromagnet portion that is arranged in the motor base: promptly, be positioned at the armature spindle at center; Be enclosed within the field spider iron core on the armature spindle; Be positioned at field spider periphery unshakable in one's determination and be fixed on the salient pole stator core on the motor base and be wound on the concentrated winding of stator on the stator salient poles; Be arranged on the opposite Nd-Fe-B permanent magnet of magnetizing direction on the surface of each phase stator salient poles pole shoe; The field spider iron core is that unshakable in one's determination and back segment field spider iron core constitutes by the leading portion field spider of axis direction, the rotor with salient pole that is formed on the field spider iron core is the evenly setting at interval of a canine tooth one little tooth, and the linking unshakable in one's determination and back segment field spider iron core of leading portion field spider is the corresponding linking with little tooth of canine tooth.The present invention is because with the above-mentioned structure of field spider employing unshakable in one's determination, the cogging torque that produces respectively between the permanent magnet on rotor core canine tooth and little tooth and the salient pole stator pole shoes is cancelled out each other basically because phase place is different, reach the purpose that weakens the magnetic flux inverse type electric motor cogging torque significantly.
Description
Technical field
The present invention relates to a kind of motor.Particularly relate to a kind of magnetic flux inverse type electric motor that can weaken the cogging torque of magnetic flux inverse type electric motor significantly.
Background technology
Magnetic flux inverse type electric motor is a kind of novel brushless doubly salient permanent magnet motor.The magnetic flux inverse type electric motor stator is similar to Stators for Switched Reluctance Motors, each phase stator of coiling is concentrated winding on each stator salient poles, different is that magnetic flux inverse type electric motor is fixed with two Fe-B rare-earth permanent magnets that magnetizing direction is opposite in the stickup of the surface of each stator salient poles pole shoe, and the intersection of two Nd-Fe-B permanent magnets is exactly the axial location of stator salient poles; The rotor of magnetic flux inverse type electric motor and the rotor structure of switched reluctance machines are basic identical.Rotation along with the magnetic flux inverse type electric motor rotor, every phase stator concentrates the permanent magnetism magnetic linkage of winding institute interlinkage can change polarity and amplitude near linear change, stator winding internal induction electromotive force is the trapezoidal wave near flat-top, and magnetic flux inverse type electric motor can be realized four quadrant running.It has the two-fold advantage of switched reluctance machines and permanent-magnet brushless DC electric machine: simple in structure, be suitable for high speed rotating, and control is flexibly; Unit volume is exerted oneself greatly, ferromagnetic material utilance height, and cost is low; Self-induction and mutual inductance are little, thereby a little electrical time constant and high fault-tolerant ability are arranged, and have good application prospects.But present stage is also not comprehensive to the research of magnetic flux inverse type electric motor, no matter be its structure or performance all also comes with some shortcomings, especially many problems such as cogging torque of motor are restricting further developing of magnetic flux inverse type electric motor.At present, though the scientific worker has done some researchs to the weakening method of cogging torque, and can weaken cogging torque preferably, still there is certain defective in many methods, are difficult to obtain practical application aborning.
Summary of the invention
Technical problem to be solved by this invention is that a kind of magnetic flux inverse type electric motor that can weaken the cogging torque of magnetic flux inverse type electric motor significantly is provided.
The technical solution adopted in the present invention is: a kind of magnetic flux inverse type electric motor, its core include the electromagnet portion that is arranged in the motor base: promptly, be positioned at the armature spindle at center; Be enclosed within on the armature spindle and with the field spider iron core of its rotation; The stator that is fixed on the salient pole stator core on the motor base and is wound on the stator salient poles that is positioned at field spider periphery unshakable in one's determination is concentrated winding; Be arranged on the surface of each phase stator salient poles pole shoe and the opposite Nd-Fe-B permanent magnet of magnetizing direction; Described field spider iron core is by constituting at the leading portion field spider of axis direction back segment field spider iron core unshakable in one's determination and that be connected with it, the rotor with salient pole that is formed on leading portion field spider iron core and the back segment field spider iron core is the evenly setting at interval of a canine tooth one little tooth, and the linking unshakable in one's determination and back segment field spider iron core of leading portion field spider is the corresponding linking with little tooth/canine tooth of canine tooth/little tooth.
All have 8 salient poles on described leading portion field spider iron core and the back segment field spider iron core, wherein, 4 is the same canine tooth of polar arc width, and 4 is the same little tooth of polar arc width.
Described leading portion field spider is unshakable in one's determination and back segment field spider core length is equal, equal diameters.
Magnetic flux inverse type electric motor of the present invention, because inconsistent with the polar arc width design of 8 rotor with salient pole of field spider punching, 8 rotor with salient pole are designed to 4 canine tooths and 4 little teeth that the polar arc width is the same that the polar arc width is the same, and canine tooth and little space of teeth are evenly arranged, the linking that field spider is divided into two sections of front and back and staggers a field spider pole span mutually at axis direction, the cogging torque that produces respectively between the permanent magnet before and after making on two sections field spiders canine tooth unshakable in one's determination and little tooth and the salient pole stator pole shoes is different and cancel out each other basically owing to phase place, reach the purpose that weakens the magnetic flux inverse type electric motor cogging torque significantly, to solve the bigger difficult problem of magnetic flux inverse type electric motor cogging torque.
Description of drawings
Fig. 1 is a magnetic flux inverse type electric motor cross-sectional view of the present invention;
Fig. 2 is a magnetic flux inverse type electric motor rotor punching structural representation of the present invention;
Fig. 3 is the structural representation of magnetic flux inverse type electric motor rotor of the present invention;
Fig. 4 is the right view of Fig. 3;
Fig. 5 is the left view of Fig. 3.
Wherein:
1: salient pole stator core 2: stator is concentrated winding
4: the second Nd-Fe-B permanent magnets of 3: the first Nd-Fe-B permanent magnets
5: armature spindle 6: leading portion field spider iron core
7: back segment field spider iron core 8: stator salient poles pole shoe
9: little tooth 10: canine tooth
Embodiment
Below in conjunction with drawings and Examples magnetic flux inverse type electric motor of the present invention is made a detailed description.
Magnetic flux inverse type electric motor of the present invention includes the pedestal that constitutes motor, the front end housing and the rear end cap of motor base, the bearing that is positioned at front end housing and rear end cap, terminal box, cooling fan etc.The electromagnet portion of its core is provided with in motor base as shown in Figure 1: be positioned at the armature spindle 5 on the bearing that is supported on front end housing and rear end cap at center; Be enclosed within on the armature spindle 5 and with armature spindle 5 secure fit and with the field spider iron core of its rotation; The stator that is fixed on the salient pole stator core 1 on the motor base and is wound on the stator salient poles that is positioned at field spider periphery unshakable in one's determination is concentrated winding 2; Described salient pole stator core 1 is overrided to form by the silicon steel sheet punching, have 6 salient poles on it uniformly, two relative on circumference salient poles belong to same phase, 6 salient poles belong to A, B, C three-phase respectively, stator on two salient poles of same phase concentrates winding 2 to be connected in series, the magnetomotive force direction unanimity that the stator that respectively is in series during energising concentrates winding to produce; On the surface of each phase stator salient poles pole shoe 8, be pasted with the first opposite Nd-Fe-B permanent magnet 3 of magnetizing direction and second Nd-Fe-B permanent magnet 4 in addition with chemical bonding agent, first Nd-Fe-B permanent magnet 3 is the same with second Nd-Fe-B permanent magnet, 4 geomeries, the permanent magnet parallel magnetization, the permanent magnet magnetizing direction is approximate to be thought radially.
Direction after first Nd-Fe-B permanent magnet 3 magnetizes is to point to rotor by stator salient poles, and the direction of second Nd-Fe-B permanent magnet 4 after magnetizing is to point to stator salient poles by rotor.The adjacent two permanent magnet magnetizing directions in two adjacent stator salient poles pole shoe both sides are identical, promptly when the permanent magnet of a certain stator salient poles pole shoe upper left side was first Nd-Fe-B permanent magnet 3, the permanent magnet on right side also was first Nd-Fe-B permanent magnet 3 on another phase stator salient poles pole shoe on the then adjacent left side; Otherwise the permanent magnet on right side is second Nd-Fe-B permanent magnet 4 on a certain stator salient poles pole shoe, and the permanent magnet on right side also is second Nd-Fe-B permanent magnet 4 on another phase stator salient poles pole shoe on then adjacent the right.Polarity on each stator salient poles pole shoe after the magnetizing of first Nd-Fe-B permanent magnet 3 and second Nd-Fe-B permanent magnet 4 is indicated with N, S symbol in the drawings.
As Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, field spider iron core of the present invention also is to be overrided to form by the silicon steel sheet punching, the back segment field spider iron core 7 that is divided into leading portion field spider unshakable in one's determination 6 and is connected with it at axis direction.Described leading portion field spider unshakable in one's determination 6 and back segment field spider 7 equal in length unshakable in one's determination, equal diameters.Leading portion field spider unshakable in one's determination 6 and back segment field spider iron core 7 will be pressed against tightly and constitute a complete rotor together.In order to prevent the diffusing spreading of silicon steel sheet of leading portion field spider unshakable in one's determination 6 and back segment field spider 7 both sides unshakable in one's determination, can adopt the argon arc welding procedure that the rotor tooth root bead is connected together, perhaps install only pressure ring additional in both sides unshakable in one's determination.All have 8 salient poles on leading portion field spider unshakable in one's determination 6 and the back segment field spider iron core 7, rotor with salient pole on leading portion field spider unshakable in one's determination 6 and back segment field spider iron core 7 is a canine tooth 10 1 little teeth 9 and evenly is provided with at interval, in 8 salient poles, 4 is that 10,4 of the same canine tooths of polar arc width are the same little teeth 9 of polar arc width.The linking of leading portion field spider unshakable in one's determination 6 and back segment field spider iron core 7 is the corresponding linking with little tooth/canine tooth of canine tooth/little tooth.It is leading portion field spider unshakable in one's determination 6 and the back segment field spider iron core 7 field spider pole span that staggers mutually, two sections field spider field spider teeth unshakable in one's determination are respectively a canine tooth 10 and little tooth 9 corresponding linkings before and after being equivalent to, or say so a little tooth 9 and a canine tooth 10 corresponding linkings.When canine tooth 10 cooperated in a certain specific dimensions scope with the polar arc width of little tooth 9, the cogging torque that produces respectively between the permanent magnet on the two sections field spiders in front and back canine tooth 10 unshakable in one's determination and little tooth 9 and the salient pole stator pole shoes was different and cancel out each other basically owing to phase place.
Owing under stator salient poles pole shoe of magnetic flux inverse type electric motor two permanent magnets that the radial magnetizing direction is opposite are arranged, during the rotor rotation, the permanent magnetism magnetic linkage change polarity of the concentrated winding institute of every phase stator interlinkage and its amplitude are near linear change, when rotor turns over a rotor polar distance, each phase stator is concentrated the positive and negative variation one-period of magnetic flux of winding institute interlinkage, stator winding internal induction electromotive force is the trapezoidal wave near flat-top, can give corresponding winding energising according to the control mode of brshless DC motor, motor is realized four quadrant running.According to the motor reversible operation principle in the Electrical Motor, magnetic flux inverse type electric motor both can be used as motor, also can be used as generator operation.
Claims (3)
1. a magnetic flux inverse type electric motor includes the electromagnet portion that is arranged in the motor base: promptly, be positioned at the armature spindle (5) at center; Be enclosed within that armature spindle (5) is gone up and with the field spider iron core of its rotation; The stator that is fixed on the salient pole stator core (1) on the motor base and is wound on the stator salient poles that is positioned at field spider periphery unshakable in one's determination is concentrated winding (2); Be arranged on the surface of each phase stator salient poles pole shoe (8) and opposite first Nd-Fe-B permanent magnet (3) and second Nd-Fe-B permanent magnet (4) of magnetizing direction; It is characterized in that, described field spider iron core is by constituting at the leading portion field spider iron core (6) of axis direction and the back segment field spider iron core (7) that is connected with it, the rotor with salient pole that is formed on leading portion field spider iron core (6) and the back segment field spider iron core (7) is the evenly setting at interval of a canine tooth (10) one little teeth (9), and the linking of leading portion field spider iron core (6) and back segment field spider iron core (7) is the corresponding linking with little tooth/canine tooth of canine tooth/little tooth.
2. magnetic flux inverse type electric motor according to claim 1, it is characterized in that, all have 8 salient poles on described leading portion field spider iron core (6) and the back segment field spider iron core (7), wherein, 4 is the same canine tooth of polar arc width (10), 4 is the same little tooth (9) of polar arc width, and evenly is provided with at interval.
3. magnetic flux inverse type electric motor according to claim 1 is characterized in that, described leading portion field spider iron core (6) and back segment field spider iron core (7) equal in length, equal diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100613763A CN100561829C (en) | 2007-10-09 | 2007-10-09 | Magnetic flux inverse type electric motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100613763A CN100561829C (en) | 2007-10-09 | 2007-10-09 | Magnetic flux inverse type electric motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101183806A CN101183806A (en) | 2008-05-21 |
| CN100561829C true CN100561829C (en) | 2009-11-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007100613763A Expired - Fee Related CN100561829C (en) | 2007-10-09 | 2007-10-09 | Magnetic flux inverse type electric motor |
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| CN (1) | CN100561829C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917310A (en) * | 2015-06-29 | 2015-09-16 | 中国船舶重工集团公司第七一二研究所 | Low-speed reluctance motor and manufacturing method thereof |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290890A (en) * | 2011-08-23 | 2011-12-21 | 山东大学 | Novel double-salient permanent magnet direct-drive wind driven generator |
| EP2865075A2 (en) * | 2012-06-21 | 2015-04-29 | Höganäs AB (publ) | Transverse flux machine |
| CN107579641B (en) * | 2017-10-23 | 2019-11-19 | 徐州惠博机电科技有限公司 | A kind of automobile start generator |
| CN107742963B (en) * | 2017-11-27 | 2024-01-26 | 湖北科技学院 | Dual-rotor motor |
| CN111262358A (en) * | 2020-02-17 | 2020-06-09 | 南京航空航天大学 | Low-torque ripple magnetic flux reverse motor |
| CN111293849B (en) * | 2020-03-10 | 2022-03-11 | 东南大学 | Flux reversal permanent magnet motor of combined rotor modulator |
| CN111799926B (en) * | 2020-07-06 | 2023-03-31 | 东莞市吉铼升电机股份有限公司 | Miniature motor and rotor winding method thereof |
| CN113193670B (en) * | 2021-05-20 | 2023-06-16 | 河北工业大学 | Modularized magnetic flux reversing motor |
| CN113178961B (en) * | 2021-05-20 | 2023-06-16 | 河北工业大学 | Axial modularized magnetic flux reversing motor |
-
2007
- 2007-10-09 CN CNB2007100613763A patent/CN100561829C/en not_active Expired - Fee Related
Non-Patent Citations (4)
| Title |
|---|
| Reduction of Cogging Torque in Flux-Reversal Machine byRotor Teeth Pairing. Tae Heoung Kim, Sung Hong Won, Ki Bong, Ju Lee.IEEE TRANSACTIONS ON MAGNETICS,Vol.41 No.10. 2005 |
| Reduction of Cogging Torque in Flux-Reversal Machine byRotor Teeth Pairing. Tae Heoung Kim, Sung Hong Won, Ki Bong, Ju Lee.IEEE TRANSACTIONS ON MAGNETICS,Vol.41 No.10. 2005 * |
| 削弱反磁通电机齿槽转矩的两种新方法. 沈勇环，陈益广，赵维友.电工技术学报，第22卷第7期. 2007 |
| 削弱反磁通电机齿槽转矩的两种新方法. 沈勇环，陈益广，赵维友.电工技术学报，第22卷第7期. 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104917310A (en) * | 2015-06-29 | 2015-09-16 | 中国船舶重工集团公司第七一二研究所 | Low-speed reluctance motor and manufacturing method thereof |
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| Publication number | Publication date |
|---|---|
| CN101183806A (en) | 2008-05-21 |
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Granted publication date: 20091118 Termination date: 20101009 |