CN103825420A - Laminated set rotor flux-switching permanent magnet motor - Google Patents
Laminated set rotor flux-switching permanent magnet motor Download PDFInfo
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- CN103825420A CN103825420A CN201410058580.XA CN201410058580A CN103825420A CN 103825420 A CN103825420 A CN 103825420A CN 201410058580 A CN201410058580 A CN 201410058580A CN 103825420 A CN103825420 A CN 103825420A
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Abstract
The invention discloses a laminated set rotor flux-switching permanent magnet motor which comprises a stator of a salient pole structure and a rotor arranged on the inner side of the stator. U-shaped magnetic conducting iron cores are arranged on the stator, asymmetric pole shoes are arranged on tooth portions, close to a groove opening, of the U-shaped iron cores, permanent magnets are embedded into stator teeth, the permanent magnets are magnetized tangentially, and the magnetizing directions of every two adjacent permanent magnets are opposite. The rotor is provided with no permanent magnet or winding. The rotor is composed of laminated sets, pole holding rods, a rotor aluminum block and a rotor shaft, the laminated sets are formed by alternately overlying axial magnetic conducting lamination pieces and non-magnetic conducting lamination pieces in the longitudinal direction, and the laminated sets are fixed to the rotor aluminum block through the pole holding rods. The special rotor structure of the motor forces magnetic flow to pass through rotor lamination piece circular paths, rotor fixing pole width is large, magnetic resistance on a permanent magnetic flux path is changed slowly along with the rotation of the rotor, and therefore compared with a salient pole structure rotor flux-switching permanent magnet motor, the rotor axial laminated structure and the stator asymmetric pole shoes can effectively reduce the cogging torque of the motor, and the torque ripple of the motor is reduced.
Description
Technical field
What the present invention relates to is a kind of motor, is specifically related to a kind of stack of laminations rotor flux switch type magneto.
Background technology
Along with permanent magnetic material performance improve constantly and perfect, the particularly progressively reduction of the thermal stability of Nd-Fe-Bo permanent magnet material and the improvement of corrosion resistance, price and the application of novel power transistor, add the progressively ripe of magneto development technique, make magneto obtain application more and more widely in every field such as national defence and industry.The use of permanent magnetic material, makes magneto compared with traditional electrical excitation electromotor, have simple in structure, volume is little, quality is light, efficiency is high and the advantage such as reliable.
Magneticflux-switching type magneto belongs to a kind of permagnetic synchronous motor.The similar switched reluctance machines of its basic structure, is double-salient-pole structure, but is embedded with the permanent magnet of radial magnetizing at each stator tooth.The magnetic flux path that permanent magnet produces changes along with the change of rotor-position, makes the magnetic flux generation alternation of stator winding linkage, and this is different from the doubly salient permanent magnet motor of the embedded permanent magnet of stator yoke portion in itself.In doubly salient permanent magnet motor only there is amplitude variation and nonpolarity variation with rotor-position in magnetic flux, and therefore, doubly salient permanent magnet motor is unipolarity motor.In Magneticflux-switching type magneto, magnetic flux is with rotor-position alternation, and amplitude and polarity all change, and Magneticflux-switching type magneto is a kind of bipolarity motor.
Magneticflux-switching type magneto main structure is: (1) adopts permanent magnetic material and permanent magnet is placed on stator; (2) stator armature winding is centralized winding, and end is shorter, after coiling moulding, embeds in stator slot again; (3) rotor core is made up of permeability magnetic material, on rotor both without permanent magnet also without armature winding.Simple, sturdy and durable, the applicable wide speed range operation of Magneticflux-switching type permanent magnet motor structure has the higher advantage such as power density and efficiency simultaneously.Therefore, Magneticflux-switching type magneto has prospects for commercial application widely, be suitable for working temperature higher, motor volume and quality had to be strict with have again the application scenario of exerting oneself more greatly, as the field such as Aero-Space, electric motor car simultaneously.
The rotor of current Magneticflux-switching type magneto mainly adopts salient-pole structure.Research shows, obvious shortcoming of Magneticflux-switching type magneto of double-salient-pole structure is that cogging torque is bigger than normal, and cogging torque is a main cause of torque pulsation while causing the specified operation of motor.Conventionally, adopt the method such as the oblique utmost point, the empty groove of tooth portion to reduce cogging torque, but this can increase difficulty of processing, the oblique utmost point of skewed slot also can reduce exerting oneself of motor simultaneously.
Summary of the invention
Goal of the invention: for above-mentioned prior art, provide a kind of stack of laminations rotor flux switch type magneto, in guaranteeing amplitude and induced potential sine degree, effectively reduce cogging torque and the torque pulsation of this motor.
Technical scheme: the present invention, for addressing the above problem, adopts following technical scheme:
A kind of stack of laminations rotor flux switch type magneto, comprises the stator of salient-pole structure and is arranged at the stack of laminations construction rotor of described stator inner side; On described stator, be provided with 6n U-shaped stator magnetic conductive iron, the adjacent side of two adjacent U-shaped stator magnetic conductive iron forms a stator tooth, in stator tooth, be embedded with permanent magnet, the magnetizing direction of described permanent magnet cutting orientation magnetizing and two adjacent permanent magnet is contrary, on stator tooth, be wound with centralized armature coil, the centralized armature coil of homophase is connected in series or in parallel, forms threephase armature winding; Described rotor comprises 5n the stack of laminations and the armature spindle that are fixedly installed on rotor block, described each stack of laminations is overrided to form along rotor radial by the axial lamination of circular arc, each stack of laminations is dehisced towards described stator, each stack of laminations accounts for 360 °/5n of rotor mechanical angle, the adjacent laminates end of adjacent two stack of laminations forms rotor pole, and wherein n is positive integer.
As improvement of the present invention, described U-shaped stator magnetic conductive iron is provided with asymmetric pole shoe near the tooth portion of notch, and two U-iron heart width of pole shoes on same stator tooth are identical, width of pole shoe difference on adjacent stators tooth.
To further improvement, also comprise that 5n the utmost point hold (14) as the present invention on described stator (2), described each stack of laminations (13) fixes on described rotor aluminium block (15) by a utmost point holding.
Further, the described utmost point for fixing stack of laminations is held (14) for non-magnet material.
As preferred version of the present invention, described rotor lamination stack (13) is alternately overrided to form along rotor radial by axial magnetic conduction lamination and non-magnetic lamination.
Further, described rotor pole extremely wide is U-shaped magnetic conductive iron (22) near the 2-3 of the single tooth portion width of notch doubly.
Further, the described rotor block for fixed rotor stack of laminations (13) adopts non-magnet material to make.
Beneficial effect: the present invention compared with prior art, has the following advantages:
(1) stack of laminations rotor flux switch type magneto of the present invention is owing to adopting stack of laminations construction rotor, two adjacent stack of laminations form a rotor pole, rotor is had larger extremely wide, but effectively leading pole is wide almost constant, select optimum rotor pole wide through optimal design, be rotor pole extremely wide for U-shaped magnetic conductive iron near the 2-3 of the single tooth portion width of notch doubly, thereby can effectively reduce the cogging torque of motor, the asymmetric pole shoe of stator U-shaped core tooth part can further reduce the cogging torque of motor.
(2) rotor is cylinder, the utmost point is held part for non-magnet material, the utmost point is held part and is equivalent to rotor, in fact rotor is salient-pole structure, adjacent two stack of laminations are equivalent to rotor pole near the part of air gap, the magnetic flux that permanent magnet produces is by U-shaped stator core, circular arc rotor lamination stack and stator winding linkage, and the magnetic flux of stator winding linkage is bipolarity, and motor induced potential has good sinusoidal degree.
(3) stack of laminations rotor flux switch type magneto of the present invention is owing to adopting stack of laminations construction rotor, in saving silicon steel sheet and permanent magnetic material consumption, motor can provide the output average torque suitable with salient-pole structure rotor, and has less torque pulsation.
Accompanying drawing explanation
Fig. 1 is 6/5 utmost point stack of laminations rotor flux switch type magneto schematic diagram;
Fig. 2 is the axial lamination schematic diagram of rotor circular arc of 6/5 utmost point stack of laminations rotor flux switch type magneto;
Fig. 3 is 12/10 utmost point stack of laminations rotor flux switch type magneto schematic diagram;
In figure, have: stack of laminations construction rotor 1, stator 2, the axial lamination 11 of circular arc and 12, stack of laminations 13, rotor pole hold 14, rotor aluminium block 15, armature spindle 16, permanent magnet 21, the U-iron heart 22, centralized armature coil 23, asymmetric pole shoe 24.
Embodiment
Below in conjunction with Figure of description and embodiment, the present invention is done further and illustrated.
Embodiment 1: be 6/5 stack of laminations rotor flux switch type magneto as described in Figure 1, comprise the stator 2 and the stack of laminations construction rotor 1 that is arranged at described stator 2 inner sides of salient-pole structure.On stator 2, be provided with 6 U-shaped stator magnetic conductive iron 22, U-shaped stator magnetic conductive iron is provided with asymmetric pole shoe near the tooth portion of notch, and the silicon steel sheet that is 0.35mm with thickness is washed into stator punching by the U-shaped shown in Fig. 1, and punching laminates into stator core vertically.The adjacent side of two adjacent U-shaped stator magnetic conductive iron forms a stator tooth, in stator tooth, be embedded with permanent magnet 21, on stator, be embedded with altogether 6 permanent magnets 21, permanent magnet 21 is selected the permanent magnetic material such as ferrite or neodymium iron boron, and the magnetizing direction of permanent magnet 21 cutting orientation magnetizings and two adjacent permanent magnet 21 is contrary.Two U-iron heart width of pole shoes on same stator tooth are identical, width of pole shoe difference on adjacent stators tooth.On stator tooth, be wound with centralized armature coil 23, totally 6 centralized armature coils 23, the centralized armature coil of homophase is connected in series or in parallel, forms threephase armature winding.Rotor 1 by 13,5 utmost points of 5 stack of laminations hold 14, rotor block 15 and armature spindle 16 form.As shown in Figure 2, each stack of laminations is alternately overrided to form along rotor radial by the axial magnetic conduction lamination of circular arc and non-magnetic lamination, and magnetic conduction lamination adopts the thick cold-reduced silicon sheet of 0.27mm, and non-magnetic lamination adopts the electrician paper more smaller than cold-reduced silicon sheet thickness.Each stack of laminations is dehisced towards stator 2 sides, each stack of laminations 13 accounts for 72 ° of mechanical angles of rotor, the adjacent laminates end of adjacent two stack of laminations forms rotor pole, rotor pole extremely wide is U-shaped magnetic conductive iron 22 near the 2-3 of the single tooth portion width of notch doubly, and stack of laminations 13 thickness are 1～2 times of single facewidth of U-shaped stator core.Stack of laminations 13 is held 14 by the utmost point of non-magnet material and is fixed on rotor block 15, and this utmost point is held 14 circular arcs that are positioned at stack of laminations, the utmost point hold 14 one side and stack of laminations 13 arc surface laminating, it is also circular arc that the utmost point is held 14 another side.By the utmost point hold 14 with the supporting installation of stack of laminations 13 and rotor block 15, making 1 rotor is ganoid cylindrical structure.The utmost point holds 14 for non-magnet material, adopts non-magnet material to make for the rotor block 13 of fixed rotor stack of laminations, and rotor block is aluminum rotor block in the present embodiment.
Embodiment 2: being illustrated in figure 3 12/10 stack of laminations rotor flux switch type magneto, is stator unit, rotor unit to be carried out to multiple expansion on the basis of 6/5 stack of laminations rotor flux switch type magneto described in embodiment 1 to obtain.The stack of laminations rotor flux switch type permanent magnet motor stator part of this structure comprises 12 U-shaped stator magnetic conductive iron 2, the adjacent side of two adjacent U-shaped stator magnetic conductive iron forms a stator tooth, between adjacent U-shaped stator magnetic conductive iron, be provided with permanent magnet 21, totally 12 permanent magnets.On stator tooth, be wound with centralized armature coil 23, totally 12 centralized armature coils 23, the centralized armature coil of homophase is connected in series or in parallel, forms threephase armature winding.Rotor 1 by 13,10 utmost points of 10 stack of laminations hold 14, rotor block 15 and armature spindle 16 form.Each stack of laminations is dehisced towards stator 2 sides, and each stack of laminations 13 accounts for 36 ° of mechanical angles of rotor, and the adjacent laminates end of adjacent two stack of laminations forms rotor pole, and stack of laminations 13 is held 14 by the utmost point of non-magnet material and is fixed on rotor block 15.12/10 all the other structures of stack of laminations rotor flux switch type magneto arrange all consistent with 6/5 stack of laminations rotor flux switch type magneto.
Magneticflux-switching type permanent magnet motor stator tooth portion in the present invention is provided with pole shoe, and rotor adopts stack of laminations structure, and axially stack of laminations schedules on rotor aluminium block with utmost point holding.Unique rotor lamination stack, make rotor pole wide larger, but effective leading pole of the actual rotor utmost point is wide almost constant, and therefore on permanent magnet magnetic path, magnetic resistance is comparatively mild with rotor variation, and motor cogging torque is less, and output torque is more steady.Meanwhile, stator and rotor sructure cooperation can guarantee again motor magnetic linkage amplitude and Waveform sine.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (7)
1. a stack of laminations rotor flux switch type magneto, is characterized in that, comprises the stator (2) of salient-pole structure and is arranged at the stack of laminations construction rotor (1) of described stator (2) inner side; On described stator (2), be provided with 6n U-shaped stator magnetic conductive iron (22), the adjacent side of two adjacent U-shaped stator magnetic conductive iron forms a stator tooth, in stator tooth, be embedded with permanent magnet (21), the magnetizing direction of described permanent magnet (21) cutting orientation magnetizing and two adjacent permanent magnet (21) is contrary, on stator tooth, be wound with centralized armature coil (23), the centralized armature coil of homophase is connected in series or in parallel, forms threephase armature winding; Described rotor (1) comprises 5n the stack of laminations (13) and the armature spindle (16) that are fixedly installed on rotor block (15), described each stack of laminations is overrided to form along rotor radial by the axial lamination of circular arc, each stack of laminations is dehisced towards described stator (2), each stack of laminations (13) accounts for 360 °/5n of rotor mechanical angle, the adjacent laminates end of adjacent two stack of laminations forms rotor pole, and wherein n is positive integer.
2. stack of laminations rotor flux switch type magneto according to claim 1, it is characterized in that: described U-shaped stator magnetic conductive iron is provided with asymmetric pole shoe near the tooth portion of notch, two U-iron heart width of pole shoes on same stator tooth are identical, width of pole shoe difference on adjacent stators tooth.
3. stack of laminations rotor flux switch type magneto according to claim 1 and 2, it is characterized in that: on described stator (2), also comprise that 5n the utmost point hold (14), described each stack of laminations (13) fixes on described rotor aluminium block (15) by a utmost point holding.
4. stack of laminations rotor flux switch type magneto according to claim 3, is characterized in that: the described utmost point for fixing stack of laminations is held (14) for non-magnet material.
5. stack of laminations rotor flux switch type magneto according to claim 1 and 2, is characterized in that: described rotor lamination stack (13) is alternately overrided to form along rotor radial by axial magnetic conduction lamination and non-magnetic lamination.
6. stack of laminations rotor flux switch type magneto according to claim 1 and 2, is characterized in that: described rotor pole extremely wide for U-shaped magnetic conductive iron (22) near the 2-3 of the single tooth portion width of notch doubly.
7. stack of laminations rotor flux switch type magneto according to claim 1 and 2, is characterized in that: the described rotor block for fixed rotor stack of laminations (13) adopts non-magnet material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410058580.XA CN103825420A (en) | 2014-02-21 | 2014-02-21 | Laminated set rotor flux-switching permanent magnet motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410058580.XA CN103825420A (en) | 2014-02-21 | 2014-02-21 | Laminated set rotor flux-switching permanent magnet motor |
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| CN103825420A true CN103825420A (en) | 2014-05-28 |
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| CN201410058580.XA Pending CN103825420A (en) | 2014-02-21 | 2014-02-21 | Laminated set rotor flux-switching permanent magnet motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328549A (en) * | 2021-06-08 | 2021-08-31 | 清华大学 | Iron core with magnetic conductive wire, magnetic circuit component, axial magnetic field motor and reluctance motor |
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| US6509667B1 (en) * | 2000-09-08 | 2003-01-21 | Delphi Technologies, Inc. | Rotor for a reluctance motor |
| JP2003333813A (en) * | 2002-05-15 | 2003-11-21 | Okuma Corp | Rotor of synchronous reluctance motor |
| JP3789671B2 (en) * | 1999-02-15 | 2006-06-28 | 三洋電機株式会社 | Linear motor stator and manufacturing method thereof |
| CN101478210A (en) * | 2009-01-22 | 2009-07-08 | 南京埃斯顿自动控制技术有限公司 | Asymmetric groove shaped permanent synchronizing motor |
| CN102097913A (en) * | 2009-12-14 | 2011-06-15 | 徐隆亚 | Double-fed brushless motor rotor and manufacturing method thereof |
| CN102474139A (en) * | 2009-08-14 | 2012-05-23 | Abb研究有限公司 | Modular rotor for synchronous reluctance machine |
| CN102497077A (en) * | 2011-12-07 | 2012-06-13 | 大连理工大学 | Rotor slotless switched reluctance motor |
| CN202840895U (en) * | 2012-08-08 | 2013-03-27 | 中国电力科学研究院 | Low-cogging-torque flux-switching permanent magnet motor |
| CN203339827U (en) * | 2013-06-17 | 2013-12-11 | 东南大学 | A switched flux motor hiding salient poles |
| CN103563239A (en) * | 2011-03-25 | 2014-02-05 | 泰克尼莱克有限公司 | Design improvements for flux switching machines |
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2014
- 2014-02-21 CN CN201410058580.XA patent/CN103825420A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3789671B2 (en) * | 1999-02-15 | 2006-06-28 | 三洋電機株式会社 | Linear motor stator and manufacturing method thereof |
| US6509667B1 (en) * | 2000-09-08 | 2003-01-21 | Delphi Technologies, Inc. | Rotor for a reluctance motor |
| JP2003333813A (en) * | 2002-05-15 | 2003-11-21 | Okuma Corp | Rotor of synchronous reluctance motor |
| CN101478210A (en) * | 2009-01-22 | 2009-07-08 | 南京埃斯顿自动控制技术有限公司 | Asymmetric groove shaped permanent synchronizing motor |
| CN102474139A (en) * | 2009-08-14 | 2012-05-23 | Abb研究有限公司 | Modular rotor for synchronous reluctance machine |
| CN102097913A (en) * | 2009-12-14 | 2011-06-15 | 徐隆亚 | Double-fed brushless motor rotor and manufacturing method thereof |
| CN103563239A (en) * | 2011-03-25 | 2014-02-05 | 泰克尼莱克有限公司 | Design improvements for flux switching machines |
| CN102497077A (en) * | 2011-12-07 | 2012-06-13 | 大连理工大学 | Rotor slotless switched reluctance motor |
| CN202840895U (en) * | 2012-08-08 | 2013-03-27 | 中国电力科学研究院 | Low-cogging-torque flux-switching permanent magnet motor |
| CN203339827U (en) * | 2013-06-17 | 2013-12-11 | 东南大学 | A switched flux motor hiding salient poles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113328549A (en) * | 2021-06-08 | 2021-08-31 | 清华大学 | Iron core with magnetic conductive wire, magnetic circuit component, axial magnetic field motor and reluctance motor |
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Application publication date: 20140528 |
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