CN102497077A - Rotor slotless switched reluctance motor - Google Patents
Rotor slotless switched reluctance motor Download PDFInfo
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- CN102497077A CN102497077A CN2011104013986A CN201110401398A CN102497077A CN 102497077 A CN102497077 A CN 102497077A CN 2011104013986 A CN2011104013986 A CN 2011104013986A CN 201110401398 A CN201110401398 A CN 201110401398A CN 102497077 A CN102497077 A CN 102497077A
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Abstract
The invention belongs to the field of electromechanical switched reluctance motors and relates to a rotor slotless switched reluctance motor, in particular to a switched reluctance motor having a rotor slotless structure. A stator of the rotor slotless switched reluctance motor has a magnetic pole structure which is formed by combining six main magnetic poles and auxiliary magnetic poles; a rotor has an anisotropic axial lamination structure and is laminated into a four-pole structure; the axial lamination structure comprises a rotary shaft, a non-magnetic-conduction bracket, an axial lamination, a non-magnetic-conduction filling material and a non-magnetic-conduction fastening ring; and magnetic poles of the axial lamination are formed by alternately laminating a high-magnetic-conduction material silicon steel sheet and a non-magnetic-conduction insulating material lamination along the axial direction. The rotor slotless switched reluctance motor has the advantages that: by adopting combined stator magnetic poles and an axial laminated rotor, the length of a magnetic path is reduced, the iron loss of the switched reluctance motor can be reduced, and the torque pulsation of the switched reluctance motor is effectively reduced; and windings are wound on the main magnetic poles, so that the windings are convenient to embed, the problem about insulation is solved, and the utilization rate of a slot is high.
Description
Technical field
The invention belongs to the switched reluctance machines field of electrical category, particularly a kind of rotor of being made up of composite type magnetic pole stator and axial lamination armature does not have the teeth groove switched reluctance machines.
Background technology
The switched reluctance motor drive system is a kind of electromechanical integration Alternating Current Governor System; Have simple in structure, reliable operation, system's control flexibly, plurality of advantages such as good speed adjustment features, operational efficiency height; It is particularly suitable in adverse circumstances and requires to move under the superfast occasion; Therefore be widely used in fields such as colliery, aviation, automobile, power bracket from several watts to several megawatts, the range of speeds forwards several ten thousand commentaries on classics to from several.Traditional switched reluctance motor is the biconvex electrode structure, has not both had winding on the rotor and has not also had permanent magnet, is wound with concentrated winding on the stator, and the windings in series on the radially relative magnetic pole becomes a phase.Switched reluctance motor can be designed to single-phase, two-phase, three-phase and different structure such as heterogeneous; And every utmost point monodentate and every extremely multiple tooth structure are arranged, and the biconvex electrode structure of conventional switch reluctance motor and switch power supply have caused it to have certain disadvantages: the one, and the edge flux that produces before stator tooth and rotor tooth overlap causes that electric current is non-linear; The 2nd, the torque on the switch reluctance machine rotor is formed by stacking a series of pulse torques, and synthetic torque is not a steady state value.These will cause switched reluctance machines to have intrinsic torque pulsation, and especially torque pulsation is bigger during the motor low cruise.So from motor body, reduce the research content that torque pulsation becomes the switched reluctance machines field to greatest extent.
Summary of the invention
The technical barrier that the present invention will solve is the switched reluctance machines that a kind of rotor of invention does not have teeth groove; Break through the biconvex utmost point category of conventional switch reluctance motor from structure; Defective from the torque pulsation of characteristic change conventional switch reluctance motor becomes a kind of high performance servo drive system from making switched reluctance machines.
The technical scheme that the present invention adopts is that a kind of rotor does not have the teeth groove switched reluctance machines; Rotor does not have the stator employing main pole of teeth groove switched reluctance machines and the field structure of auxiliary magnetic pole combination, and rotor adopts the axial lamination of anisotropy, and the rotor that rotor does not have the teeth groove switched reluctance machines builds up 4 electrode structures; The stator main pole is 6 utmost points; The stator auxiliary magnetic pole also is 6 utmost points, and the stator and rotor number of poles is 12/4 utmost point, and motor is 3 phases; 6 main pole 1-U1 of stator core 1,1-U2,1-V1,1-V2,1-W1, last 6 winding 2-U1,2-U2,2-V1,2-V2,2-W1, the 2-W2 of being wound with respectively of 1-W2; In order to improve the magnetic structure characteristic, 6 auxiliary magnetic pole 1-a1,1-a2,1-a3,1-a4,1-a5,1-a6 are arranged; The U phase winding is by being in series at 2 last winding 2-U1,2-U2 of spatial radial relative 2 main pole 1-U1,1-U2; The V phase winding is by being in series at 2 last winding 2-V1,2-V2 of spatial radial relative 2 main pole 1-V1,1-V2; The W phase winding is by being in series at 2 last winding 2-W1,2-W2 of spatial radial relative 2 main pole 1-W1,1-W2, thereby constitutes stator U, V, W three phase windings; The rotor of motor adopts the axial lamination of anisotropy, and axially lamination comprises rotating shaft 3, non-magnetic conduction support 4, axially lamination 5, non-magnetic conduction packing material 6 and non-magnetic conduction dead ring 7 are formed; Axially lamination 5 is alternately to be overrided to form vertically by high permeability material silicon steel sheet and non-magnetic conduction insulating material lamination, and control magnetic conduction lamination is 10: 1 with the thickness ratio of non-magnetic conduction lamination.
If the polar arc angle of auxiliary magnetic pole is β s2, main pole polar arc angle is that β s1, unit are degree; The polar arc angular dependence of auxiliary magnetic pole and main pole satisfies the following formula condition:
β
s2＝(0.5～0.8)β
s1 (1)
Total polar arc angle of setting sub-magnetic pole is β
s, then, β
s=β
S1+ β
S2(2)
The relation at total polar arc angle of rotor and magnetic pole of the stator is β
r＞β
s(3)
Axially the dark h of maximum groove of lamination should satisfy h >=20 δ (4)
δ is a gas length in the formula, and unit is mm.
The present invention has following remarkable result:
1) adopts combined-stator magnetic pole and the axial lamination armature of anisotropy can reduce the volume and the torque pulsation of switched reluctance machines effectively, and the length of magnetic path is shortened greatly, can reduce the iron loss of switched reluctance machines.
2) because magnetic pole of the stator is divided into main pole and auxiliary magnetic pole, only be wound with winding on the main pole,, need not consider the phase insulation problem, groove utilance height so it is more convenient to embed ratio of winding.
3) because rotor adopts the axial lamination armature structure of anisotropy, the salient pole of rotor can effectively reduce the volume of motor than high.
Description of drawings
Fig. 1 does not have the stator structure figure of teeth groove switched reluctance machines for rotor; Wherein, 1 is stator core, and 1-U1,1-U2,1-V1,1-V2,1-W1,1-W2 are 6 main poles; 1-a1,1-a2,1-a3,1-a4,1-a5,1-a6 are 6 auxiliary magnetic poles; β s1, β s2 be respectively main pole and auxiliary magnetic pole arc right central angle, be called the polar arc angle, unit is degree; 2-U1,2-U2,2-V1,2-V2,2-W1,2-W2 are 6 stator winding.
Fig. 2 does not have the rotor minor structure figure of teeth groove switched reluctance machines for rotor, and wherein, 3 are rotating shaft, and 4 be that non-magnetic conduction support, 5 is axial laminted pole, and 5a is axial laminted pole top, and 6 is non-magnetic conduction packing material, and 7 is non-magnetic conduction dead ring; β r is the polar arc angle of rotor magnetic pole, and unit is degree, and h is that the groove of rotor magnetic pole is dark, and unit is m.
When Fig. 3 switched on for the U phase winding, the axial laminted pole top 5a of main pole in the no teeth groove switched reluctance machines and axial laminted pole 5 was in the Distribution of Magnetic Field that does not line up under the position.
When Fig. 4 switches on for the U phase winding, the Distribution of Magnetic Field of axial laminted pole top 5a under aligned position of main pole in the no teeth groove switched reluctance machines and axial laminted pole 5.
Fig. 5 is the torque angle displacement characteristic curve that a 200W 3 phases 12/4 utmost point rotor does not have the teeth groove switched reluctance machines; Wherein, Abscissa is rotor position angle θ, and unit is degree, and it is θ=0 ° that the axial laminted pole top 5a of definition stator main pole 1-U1,1-U2 and rotor axial laminted pole 5 does not line up the position; Ordinate is the electromagnetic torque T of motor, and unit is Nm.
Embodiment
Specify practical implementation of the present invention below in conjunction with accompanying drawing and technical scheme.The stator that rotor does not have the teeth groove switched reluctance machines adopts the composite poles structure, and rotor adopts the axial lamination of anisotropy, and rotor is considered the manufacturability of axial lamination, and rotor builds up 4 electrode structures.According to the restriction relation of the stator and rotor number of magnetic poles of switched reluctance machines, the stator main pole is elected 6 utmost points as, and stator auxiliary magnetic pole number is confirmed thereupon, also be 6 utmost points, so the stator and rotor number of poles is 12/4 utmost point.According to the relation of the number of poles and the number of phases, motor is 3 phases.3 phases, 12/4 utmost point rotor of being invented does not have the teeth groove switched reluctance machines to be made up of stator and rotor, and its stator comprises stator core 1 and stator winding 2 two parts.Stator core 1 has 6 main pole 1-U1,1-U2,1-V1,1-V2,1-W1,1-W2 and 6 auxiliary magnetic pole 1-a1,1-a2,1-a3,1-a4,1-a5,1-a6; 6 main pole 1-U1,1-U2,1-V1,1-V2,1-W1, last 6 winding 2-U1,2-U2,2-V1,2-V2,2-W1, the 2-W2 of being wound with respectively of 1-W2; The U phase winding is by being in series at 2 last winding 2-U1,2-U2 of spatial radial relative 2 main pole 1-U1,1-U2; The V phase winding is by being in series at 2 last winding 2-V1,2-V2 of spatial radial relative 2 main pole 1-V1,1-V2; The W phase winding is by being in series at 2 last winding 2-W1,2-W2 of spatial radial relative 2 main pole 1-W1,1-W2, thereby constitutes U, V, W three phase windings.6 auxiliary magnetic pole 1-a1,1-a2,1-a3,1-a4,1-a5,1-a6 be last not to have winding, sees accompanying drawing 1.As shown in Figure 2, rotor is the axial lamination of anisotropy, is made up of rotating shaft 3, non-magnetic conduction support 4, axial lamination 5, non-magnetic conduction packing material 6 and non-magnetic conduction dead ring 7, and wherein, β r is the polar arc angle of rotor magnetic pole, and unit is degree; H is that the groove of rotor magnetic pole is dark, and unit is m.Axially lamination 5 alternately is overrided to form by high permeability material silicon steel sheet and non-magnetic conduction insulating material lamination vertically; Control magnetic conduction lamination is 10: 1 with the thickness ratio of non-magnetic conduction lamination, make salient pole that the rotor of being invented do not have a teeth groove switched reluctance machines than with the salient pole of traditional double salient pole switched reluctance machines than close.
As shown in Figure 3; Main pole in the no teeth groove switched reluctance machines is not lining up under the position with the axial laminted pole top 5a of axial laminted pole 5; Make the energising of U phase winding; The magnetic line of force that U phase winding 2-U1 produces passes through air gap through U phase magnetic pole 1-U1 and with its auxiliary magnetic pole 1-a1 that faces mutually, 1-a6 and main pole 1-V1,1-W2, gets into axial lamination armature, forms the closed-loop path.The magnetic line of force that U phase winding 2-U2 produces passes through air gap through U phase magnetic pole 1-U2 and with its auxiliary magnetic pole 1-a3 that faces mutually, 1-a4 and main pole 1-V2,1-W1, gets into axial lamination armature, forms the closed-loop path.The magnetic line of force is distorted when stator gets into rotor through air gap, and the tangential force that the distortion magnetic line of force produces drives rotor rotation.Magnetic line of force closed path when auxiliary magnetic pole 1-a1,1-a6,1-a3,1-a4 switch on U mutually shortens; Simultaneously, when axially the lamination armature magnetic pole was through auxiliary magnetic pole, because the anisotropy permeance of axial lamination armature magnetic pole is distorted the magnetic line of force, thereby the interval that makes motor produce torque was strengthened; When motor was rotated counterclockwise, auxiliary magnetic pole 1-a1 and 1-a4 worked; When motor turned clockwise, auxiliary magnetic pole 1-a3 and 1-a6 worked; Continue to make U phase winding energising, motor will rotate to aligned position, and the axial laminted pole top 5a that does not promptly have main pole and axial laminted pole 5 in the teeth groove switched reluctance machines is under aligned position, and is as shown in Figure 4.At this moment, cut off the electric current of U phase winding, give other phase winding energisings, motor continues to produce tangential electromagnetic force rotation; So change the "on" position of each phase winding in turn, motor is rotated continuously; When being U-V-W-U like power-up sequence, motor is rotated counterclockwise; When being U-W-V-U like power-up sequence, motor turns clockwise.
Total polar arc angle of magnetic pole of the stator is β
s=β
S1+ β
S2, be the motor of 12 utmost points for stator, stator poles arc angle β s value does
The relation at stator and rotor polar arc angle is β
r＞β
s, get
β
r≥32° (6)
For the magnetic driving fit reason that makes motor distributes; The width of stator auxiliary magnetic pole should equal the width of main pole; But see with the angle of control copper factor from strengthening the angle that produces torque zone; The width of auxiliary magnetic pole can not be too wide, takes all factors into consideration the factor of this two aspect, should make the polar arc angle of auxiliary magnetic pole and main pole satisfy β
S2=(0.5～0.8) β
S1So,
β
s1＝16°～20° (7)
β
s2＝10°～16° (8)
For axial lamination armature, rationally distribute in order to guarantee the magnetic line of force, axially the dark h of maximum groove of lamination should satisfy following relation
h≥20δ (9)
δ is a gas length in the formula, and unit is mm.
The key dimension that the rotor of being invented does not have a teeth groove switched reluctance machines is chosen close with traditional switched reluctance machines, is 200W for rated power, and rated speed is that the rotor of 1500r/min does not have the teeth groove switched reluctance machines, gets stator outer diameter D
s=120mm, rotor diameter D
r=60mm, gas length δ=0.3mm gets the stator poles arc angle and is respectively β
S1=20 °, β
S2=10 °, β
s=30 °, the rotor pole arc angle is β
r=32 °.Compare with the tradition 6/4 pole switching reluctance motor that adopts identical size, its output torque is close, sees table 1.Fig. 5 is the torque angle displacement characteristic curve that 200W3 phase 12/4 utmost point rotor does not have the teeth groove switched reluctance machines, and the curve from figure is visible, and its output torque flat part is widened, and less with the position angle variation, therefore, can reduce the pulsation of torque greatly.
The contrast of table 1 200W model machine
Adopt axial lamination armature switched reluctance machines of the present invention that torque pulsation is improved, and greatly improve efficiency of motor.The rotor that utilizes structure of the present invention to can be made into two phases, three-phase, four phases or the five equal different numbers of phases does not have the teeth groove switched reluctance machines.
Claims (1)
1. a rotor does not have the teeth groove switched reluctance machines, it is characterized in that, rotor does not have the stator employing main pole of teeth groove switched reluctance machines and the field structure of auxiliary magnetic pole combination; Rotor adopts the axial lamination of anisotropy; The rotor that rotor does not have the teeth groove switched reluctance machines builds up 4 electrode structures, and the stator main pole is 6 utmost points, and the stator auxiliary magnetic pole also is 6 utmost points; The stator and rotor number of poles is 12/4 utmost point, and motor is 3 phases; Be wound with 6 windings (2-U1,2-U2,2-V1,2-V2,2-W1,2-W2) respectively on 6 main poles (1-U1,1-U2,1-V1,1-V2,1-W1,1-W2) of stator core (1), 6 auxiliary magnetic poles (1-a1,1-a2,1-a3,1-a4,1-a5,1-a6) arranged in order to improve the magnetic structure characteristic; The U phase winding is in series by 2 windings (2-U1,2-U2) on relative 2 main poles (1-U1,1-U2) of spatial radial; The V phase winding is in series by 2 windings (2-V1,2-V2) on relative 2 main poles (1-V1,1-V2) of spatial radial; The W phase winding is in series by 2 windings (2-W1,2-W2) on relative 2 main poles (1-W1,1-W2) of spatial radial, constitutes stator U, V, W three phase windings; The rotor of motor adopts the axial lamination of anisotropy, and axially lamination comprises rotating shaft (3), non-magnetic conduction support (4), axially lamination (5), non-magnetic conduction packing material (6) and non-magnetic conduction dead ring (7) are formed; Axially lamination (5) alternately is overrided to form by high permeability material silicon steel sheet and non-magnetic conduction insulating material lamination vertically, and control magnetic conduction lamination is 10: 1 with the thickness ratio of non-magnetic conduction lamination;
If the polar arc angle of auxiliary magnetic pole is β s2, main pole polar arc angle is that β s1, unit are degree; The relation at auxiliary magnetic pole and main pole polar arc angle satisfies the following formula condition:
β
s2＝(0.5～0.8)β
s1 (1)
Total polar arc angle of setting sub-magnetic pole is β s, then, and β
s=β
S1+ β
S2(2)
The relation at total polar arc angle of rotor and magnetic pole of the stator is: β
r＞β
s(3)
Axially the dark h of maximum groove of lamination should satisfy: h >=20 δ (4)
In the formula, δ is a gas length, and unit is mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110401398 CN102497077B (en) | 2011-12-07 | 2011-12-07 | Rotor slotless switched reluctance motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110401398 CN102497077B (en) | 2011-12-07 | 2011-12-07 | Rotor slotless switched reluctance motor |
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|---|---|
| CN102497077A true CN102497077A (en) | 2012-06-13 |
| CN102497077B CN102497077B (en) | 2013-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110401398 Expired - Fee Related CN102497077B (en) | 2011-12-07 | 2011-12-07 | Rotor slotless switched reluctance motor |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117608A (en) * | 2013-02-20 | 2013-05-22 | 上海中科深江电动车辆有限公司 | Method for manufacturing synchronous reluctance motor rotor structure and related components |
| CN103825380A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Low-cogging-torque flux switching permanent magnet motor |
| CN103825420A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Laminated set rotor flux-switching permanent magnet motor |
| CN104377854A (en) * | 2013-08-16 | 2015-02-25 | 西门子公司 | Rotor of a dynamo-electric rotational machine |
| CN105141098A (en) * | 2015-09-21 | 2015-12-09 | 华晨汽车集团控股有限公司 | Switched reluctance motor with segmental rotor |
| CN107046336A (en) * | 2016-02-05 | 2017-08-15 | 通用汽车环球科技运作有限责任公司 | Synchronous magnetic resistance motor |
| CN110521088A (en) * | 2017-03-31 | 2019-11-29 | 皇家飞利浦有限公司 | Permanent magnet three-phase machine for the high-speed applications with low vibration and low resistance loss |
| CN112332571A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Axial lamination anisotropic synchronous reluctance motor rotor |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103117608A (en) * | 2013-02-20 | 2013-05-22 | 上海中科深江电动车辆有限公司 | Method for manufacturing synchronous reluctance motor rotor structure and related components |
| CN104377854B (en) * | 2013-08-16 | 2018-10-30 | 西门子公司 | The rotor of the machine of electronic rotation |
| CN104377854A (en) * | 2013-08-16 | 2015-02-25 | 西门子公司 | Rotor of a dynamo-electric rotational machine |
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| CN103825420A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Laminated set rotor flux-switching permanent magnet motor |
| CN103825380A (en) * | 2014-02-21 | 2014-05-28 | 东南大学 | Low-cogging-torque flux switching permanent magnet motor |
| CN105141098A (en) * | 2015-09-21 | 2015-12-09 | 华晨汽车集团控股有限公司 | Switched reluctance motor with segmental rotor |
| CN107046336A (en) * | 2016-02-05 | 2017-08-15 | 通用汽车环球科技运作有限责任公司 | Synchronous magnetic resistance motor |
| US10116174B2 (en) | 2016-02-05 | 2018-10-30 | GM Global Technology Operations LLC | Synchronous reluctance electric machine |
| CN107046336B (en) * | 2016-02-05 | 2019-12-13 | 通用汽车环球科技运作有限责任公司 | Synchronous reluctance motor |
| CN110521088A (en) * | 2017-03-31 | 2019-11-29 | 皇家飞利浦有限公司 | Permanent magnet three-phase machine for the high-speed applications with low vibration and low resistance loss |
| CN112332571A (en) * | 2019-11-12 | 2021-02-05 | 沈阳工业大学 | Axial lamination anisotropic synchronous reluctance motor rotor |
| CN112332571B (en) * | 2019-11-12 | 2024-06-25 | 沈阳工业大学 | Axial lamination anisotropic synchronous reluctance motor rotor |
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