CN105305671A - Cylindrical moving iron-type permanent magnet linear generator - Google Patents
Cylindrical moving iron-type permanent magnet linear generator Download PDFInfo
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- CN105305671A CN105305671A CN201510692473.7A CN201510692473A CN105305671A CN 105305671 A CN105305671 A CN 105305671A CN 201510692473 A CN201510692473 A CN 201510692473A CN 105305671 A CN105305671 A CN 105305671A
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- permanent magnet
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- mover
- linear generator
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Abstract
The invention discloses a cylindrical moving iron-type permanent magnet linear generator, which comprises a permanent magnet stator and a rotor, wherein the permanent magnet stator comprises a multi-tooth iron core, an armature winding and permanent magnets; the inner round surface of the multi-tooth iron core is uniformly provided with an even number of first tooth boots; the permanent magnets are fixed on the tooth tops of the first tooth boots; the outer round surface of the rotor is uniformly provided with a plurality of grooves; the inner round surface of the rotor is uniformly provided with bosses with the same number as the grooves; each boss and each groove are symmetrically arranged along the radial center line of the rotor; radial center lines of the boss and the groove coincide; the permanent magnet stator sleeves the periphery of the rotor; the axial length of the rotor is smaller than the axial length of the overall permanent magnet stator; and the rotor can perform reciprocating motion in an axial length range of the permanent magnet stator. By adopting the above structure, the manufacturing process is simple, thrust fluctuation is small, and the circumferential positioning force is large. In addition, on the premise of not causing reduced power, further lightweight of the rotor can be realized.
Description
Technical field
The present invention relates to a kind of generator, belong to technical field of motors, particularly a kind of cylinder type moving-iron type permanent magnet linear generator.
Background technology
Cylindrical linear generator is direct is the generator of electric energy by the changes mechanical energy of rectilinear motion, and save middle unnecessary mechanical transmission mechanism, reliability is high, therefore can be widely used in rectilinear motion power field.
The modes such as existing cylinder-shape linear electricity generator stator core adopts that silicon steel sheet circumference laminates, soft iron material processing or the compacting of powder soft-magnetic composite material are made, and pie made by armature winding, embeds in stator core slot.
Above-mentioned cylinder-shape linear generator also exists following deficiency:
1. manufacturing process is complicated, and cost is high.
2., because slot effect exists, motor force oscillation is large.
3. mover adopts moving-magnetic type or moving-iron type magnetic structure.Moving-magnetic type magnetic structure is complicated, quality weight; Moving-iron type magnetic structure is simple, and quality is slightly lighter than moving-magnetic type, but still heavier, and circumferential detent force is little.
Summary of the invention
The technical problem to be solved in the present invention is for above-mentioned the deficiencies in the prior art, and provides a kind of cylinder type moving-iron type permanent magnet linear generator, and this cylinder type moving-iron type permanent magnet linear generator manufacture craft is simple, and force oscillation is little, and circumferential detent force is large.
In addition, the application also provides a kind of cylinder type moving-iron type permanent magnet linear generator, and this cylinder type moving-iron type permanent magnet linear generator is not causing under under powered prerequisite, can realize the further lightweight of mover.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of cylinder type moving-iron type permanent magnet linear generator, comprises permanent-magnet stator and mover.
Described permanent-magnet stator comprises multiple tooth iron core, armature winding and permanent magnet, and multiple tooth iron core is circular, and the inner headed face of multiple tooth iron core is uniformly distributed with even number tooth boots one along the circumference; Armature winding is wrapped on the tooth root of tooth boots one, and permanent magnet is fixed on the tooth top of tooth boots one.
The periphery of described mover is along the circumferential direction evenly equipped with several grooves, and the inner headed face of mover is along the circumferential direction evenly equipped with the boss equal with number of recesses; Each boss and each groove are all arranged symmetrically with along the radial centre lines of mover, boss and groove one_to_one corresponding, and the radial centre lines of boss and groove coincides.
Permanent-magnet stator is sleeved on the periphery of mover, and the axial length of mover is less than the axial length of whole permanent-magnet stator, and mover can move reciprocatingly in the axial length range of permanent-magnet stator.
Mover inner headed face between adjacent two described boss is respectively provided with a profiled holes in " horn mouth " shape, and each profiled holes all can form sparse magnetic linkage position.
In described multiple tooth iron core tooth boots one tooth top on be provided with for by stopping means spacing for permanent magnet.
The quantity of described boss and groove is all equal with the quantity of tooth boots one.
Described permanent-magnet stator comprises at least two multiple tooth iron cores and at least one coaxially arranged every magnetic bridge, is non-magnet material, is arranged between adjacent two multiple tooth iron cores every magnetic bridge.
Described is also circular every magnetic bridge, is along the circumferential direction evenly equipped with the tooth boots two equal with tooth boots one quantity at the inner headed face every magnetic bridge; Armature winding is wrapped on the tooth root of tooth boots one and tooth boots two.
The internal diameter of described tooth boots two is less than the internal diameter of tooth boots one, but is greater than the internal diameter of permanent magnet.
The axial length of each described permanent magnet is equal to the axial length of single multiple tooth iron core, and permanent magnet is arranged in pairs vertically, and circumferentially the direction of magnetization of two adjacent permanent magnets is contrary.
The axial length of described mover be greater than single multiple tooth iron core axial length with every magnetic bridge axial length sum.
Each described boss and each groove all curved.
After the present invention adopts said structure, there is following beneficial effect:
1. permanent-magnet stator adopts general electric rotating machine manufacture craft, and technique is simple, low cost of manufacture.Permanent magnet is positioned at inside permanent-magnet stator, and assembling is simple, reliable, resistance to impact is strong, be easy to heat radiation.Therefore, it is possible to be widely used in reciprocal short stroke cylinder type permanent magnet linear electrical generator fields.
2. the setting of mover peripheral groove, can make mover circumference detent force large, can realize the circumference location of mover, improve frequency of oscillation and the response speed of linear electric generator.
3. the axial length of mover is less than the axial length of whole permanent-magnet stator, therefore the axial magnetic conductance between mover and permanent magnet changes little, and axial locating force is little, and also namely system force oscillation is little.
4. the setting of above-mentioned boss and profiled holes, not causing under under powered prerequisite, by Optimize magnetic circult, enables mover further lightweight.
Accompanying drawing explanation
Fig. 1 shows cylinder type moving-iron type permanent magnet linear generator front view of the present invention.
Fig. 2 shows cylinder type moving-iron type permanent magnet linear generator A-A cutaway view of the present invention.
Fig. 3 shows the permanent-magnet stator schematic perspective view of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Fig. 4 shows the multiple tooth iron core front view of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Fig. 5 shows the permanent magnet radially cutaway plan expansion distribution schematic diagram of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Fig. 6 show cylinder type moving-iron type permanent magnet linear generator of the present invention every magnetic bridge front view.
Fig. 7 shows the mover front view of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Fig. 8 shows the mover schematic perspective view of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Fig. 9 shows armature winding when not being energized, the magnetic linkage schematic diagram (mover does not comprise groove and boss) of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Figure 10 shows armature winding when not being energized, the magnetic linkage schematic diagram (mover only comprises groove) of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Figure 11 shows armature winding when not being energized, the magnetic linkage schematic diagram (mover comprises groove and boss) of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Figure 12 shows high load capacity corresponding electric current when flowing through armature winding, the magnetic linkage schematic diagram (mover comprises groove and boss) of cylinder type moving-iron type permanent magnet linear generator of the present invention.
Figure 13 shows the magnetic linkage schematic diagram when high load capacity with sparse magnetic linkage position L.
Wherein have:
100. permanent-magnet stator;
101. multiple tooth iron cores; 102. armature winding; 103. permanent magnet; 104. every magnetic bridge; 105. positive stop lug boss; 106. tooth boots one; 107. tooth boots two; 108. tooth root; 109. tooth top;
200. mover;
201. radial centre lines; 202. boss; 203. groove; 204. profiled holes.
In addition, in figure, L is expressed as sparse magnetic linkage position; H is expressed as high density magnetic linkage position.
Embodiment
Below in conjunction with accompanying drawing and concrete better embodiment, the present invention is further detailed explanation.
As shown in Figure 1, a kind of cylinder type moving-iron type permanent magnet linear generator, comprises permanent-magnet stator 100 and mover 200.
As shown in Figure 1, Figure 2 and Figure 3, permanent-magnet stator 100 comprises multiple tooth iron core 101, armature winding 102, permanent magnet 103 and every magnetic bridge 104.
The quantity of multiple tooth iron core 101, can set according to actual needs, preferably has two at least, more preferably two.Multiple multiple tooth iron core 101 is all coaxially arranged, and is arranged between adjacent two multiple tooth iron cores 101 every magnetic bridge 104.
Each multiple tooth iron core 101 is all preferred to be overrided to form vertically by silicon steel sheet, and each multiple tooth iron core 101 is all in circular.
As shown in Figure 4, described multiple tooth iron core 101, the inner headed face of multiple tooth iron core 101 is uniformly distributed with even number tooth boots 1 along the circumference, is preferably 6.
As shown in Figure 6, be non-magnet material every magnetic bridge 104, every magnetic bridge 104 also in circular, be along the circumferential direction evenly equipped with the tooth boots two 107 equal with tooth boots 1 quantity at the inner headed face every magnetic bridge 104.
Tooth boots 1 and tooth boots 2 107 include tooth root 108 and tooth top 109, and tooth top 109 is towards direction, the center of circle.Tooth boots 1 are all identical with tooth top 109 size with the tooth root 108 of tooth boots 2 107.
When multiple tooth iron core 101 only has one, directly armature winding 102 is wrapped on the tooth root 108 of tooth boots 1.
When multiple tooth iron core 101 is two or more, armature winding 102 will be wrapped on the tooth root 108 of tooth boots 1 and tooth boots 2 107, thus technique is simple.
Permanent magnet 103 is fixed on the tooth top 109 of tooth boots 1.The tooth top 109 of tooth boots 1 is preferably provided with for by stopping means spacing for permanent magnet 103.
Above-mentioned stopping means is preferably positive stop lug boss 105 as shown in Figure 4, and positive stop lug boss 105 is highly preferably less than the height of permanent magnet 103.In permanent magnet 103 assembling process, circumferential positioning action can be played, without the need to assembly tooling, assemble simple and reliable.
As replacement, above-mentioned stopping means also can be limited impression etc.
Permanent magnet 103 is mounted to rear flank in multiple tooth iron core 101, friction and impact, and reliability is high, and anti-degaussing ability is strong;
Further, the internal diameter R2 of tooth boots 2 107 is less than the internal diameter R1 of tooth boots 1, but is greater than the internal diameter of permanent magnet 103.Such setting, is convenient to be mounted with on the one hand; Can motor flux leakage be reduced on the other hand, improve power of motor density.
The axial length of each permanent magnet 103 all preferably equals the axial length of single multiple tooth iron core 101.
As shown in Figure 5, permanent magnet 103 is arranged in pairs vertically, and circumferentially the direction of magnetization of two adjacent permanent magnets 103 is contrary.Also namely, permanent magnet 103 vertically and circumferential N, S be alternately arranged.Therefore, can form transverse magnetic flux on adjacent teeth boots, cutting winding, generates electricity.
Permanent-magnet stator 100 is sleeved on the periphery of mover 200, and the axial length of mover 200 is less than the axial length of whole permanent-magnet stator 100, and mover 200 can move reciprocatingly in the axial length range of permanent-magnet stator 100.
Further, the axial length of mover 200 be greater than single multiple tooth iron core 101 axial length with every magnetic bridge 104 axial length sum.Thus the axial magnetic conductance between mover 200 and permanent magnet 103 changes not quite, and axial locating force is little, also namely system force oscillation is little.
As shown in Figure 7 and Figure 8, mover 200 is also overrided to form vertically primarily of silicon steel sheet.
The periphery of mover 200 is along the circumferential direction evenly equipped with several grooves 203.The quantity of groove 203 is preferably equal with tooth boots 1 quantity, thus makes the circumferential detent force of mover 200 stronger.
The inner headed face of mover 200 is along the circumferential direction evenly equipped with boss 202 equal with groove 203 quantity respectively and profiled holes 204.
Each boss 202 and each groove 203 all preferably curved.
Each boss 202 and each groove 203 are all arranged symmetrically with along the radial centre lines 201 of mover 200, and boss 202 coincides with the radial centre lines 201 of both grooves 203.
Profiled holes 204 is arranged between adjacent two boss 202, and each profiled holes 204 is all preferably in " horn mouth " shape, and " horn mouth " of profiled holes 204 is towards direction, the center of circle.In addition, each profiled holes 204 all can form sparse magnetic linkage position L.
The setting of above-mentioned profiled holes 204, simple and reliable process, weight is lighter, and circumferential detent force is larger, and the while of not causing under powered, makes the further lightweight of mover 200 weight, improves frequency of oscillation and the response speed of linear electric generator.
Following research groove 203, boss 202 and profiled holes 204 mechanism of production.
Fig. 9 to Figure 12 is the magnetic linkage analysis diagram representing the cylinder type moving-iron type permanent magnet linear generator without profiled holes 204, and in figure, fine rule represents magnetic linkage.
When Fig. 9 represents that armature winding 102 is not energized, in this case, the magnetic linkage that the permanent magnet 103 of permanent-magnet stator 100 produces only is had.Further, the position that the inner peripheral surface of mover 200 is corresponding with the circumference central authorities of permanent magnet 103 produces sparse magnetic linkage position L, the position that the outer peripheral face of mover 200 is corresponding with the notch of multiple tooth iron core 101 produces high density magnetic linkage position H.
When Figure 10 represents that armature winding 102 is not energized, in this case, due to the existence of groove 203, when mover 200 rotates in a circumferential direction, magnetic conductance between mover 200 and permanent magnet 103 changes greatly, thus produce larger cogging torque, namely the circumferential detent force of mover 200 is large, hinder mover 200 circumferential movement, realize mover 200 circumference location, but due to the minimizing of mover 200 magnetic circuit live part, sparse magnetic linkage position L and high density magnetic linkage position H is all to mover 200 offset inboard, sparse magnetic linkage position L and high density magnetic linkage position H magnetic is close increases, is unfavorable for maximum power output.
When Figure 11 represents that armature winding 102 is not energized, in this case, due to the existence of boss 202, effectively magnetic circuit is constant to make mover 200, solves sparse magnetic linkage position L and high density magnetic linkage position H magnetic is close increases problem, ensures maximum power output.
When Figure 12 represents that the corresponding electric current of high load capacity flows through armature winding 102, in this case, the magnetic linkage schematic diagram of cylinder type moving-iron type permanent magnet linear generator of the present invention, known when high load capacity, there is not circumferential offset in sparse magnetic linkage position L.
Also between the inner peripheral surface and outer peripheral face of mover 200, namely produce the sparse magnetic linkage position L not almost being utilized as magnetic circuit.Therefore, as long as do not produce saturation effects phenomenon at guarantee high density magnetic linkage position H, confirm the radical length of mover 200, even if then cut sparse magnetic linkage position L, also can not cause power reduction, and the further lightweight of mover 200 can be realized.
Figure 13 is the magnetic linkage schematic diagram when high load capacity with sparse magnetic linkage position L, and known when high load capacity, magnetic linkage can pass through along boss.
The above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, can also make some improvement under the premise without departing from the principles of the invention, and these improvement also should be considered as protection scope of the present invention.Such as, multiple tooth iron core 101 and be not limited to the number of teeth and the shape of embodiment every magnetic bridge 104 number of teeth and shape.And groove 203, boss 202, profiled holes 204 and permanent magnet 103 number and shape are also not limited to number and the shape of embodiment respectively.These equivalents all belong to protection scope of the present invention.
Claims (10)
1. a cylinder type moving-iron type permanent magnet linear generator, comprises permanent-magnet stator and mover, it is characterized in that:
Described permanent-magnet stator comprises multiple tooth iron core, armature winding and permanent magnet, and multiple tooth iron core is circular, and the inner headed face of multiple tooth iron core is uniformly distributed with even number tooth boots one along the circumference; Armature winding is wrapped on the tooth root of tooth boots one, and permanent magnet is fixed on the tooth top of tooth boots one;
The periphery of described mover is along the circumferential direction evenly equipped with several grooves, and the inner headed face of mover is along the circumferential direction evenly equipped with the boss equal with number of recesses; Each boss and each groove are all arranged symmetrically with along the radial centre lines of mover, boss and groove one_to_one corresponding, and the radial centre lines of boss and groove coincides;
Permanent-magnet stator is sleeved on the periphery of mover, and the axial length of mover is less than the axial length of whole permanent-magnet stator, and mover can move reciprocatingly in the axial length range of permanent-magnet stator.
2. cylinder type moving-iron type permanent magnet linear generator according to claim 1, it is characterized in that: the mover inner headed face between adjacent two described boss is respectively provided with a profiled holes in " horn mouth " shape, and each profiled holes all can form sparse magnetic linkage position.
3. cylinder type moving-iron type permanent magnet linear generator according to claim 1, is characterized in that: in described multiple tooth iron core tooth boots one tooth top on be provided with for by stopping means spacing for permanent magnet.
4. cylinder type moving-iron type permanent magnet linear generator according to claim 1, is characterized in that: the quantity of described boss and groove is all equal with the quantity of tooth boots one.
5. cylinder type moving-iron type permanent magnet linear generator according to claim 1, it is characterized in that: described permanent-magnet stator comprises at least two multiple tooth iron cores and at least one coaxially arranged every magnetic bridge, be non-magnet material every magnetic bridge, be arranged between adjacent two multiple tooth iron cores.
6. cylinder type moving-iron type permanent magnet linear generator according to claim 5, is characterized in that: described is also circular every magnetic bridge, is along the circumferential direction evenly equipped with the tooth boots two equal with tooth boots one quantity at the inner headed face every magnetic bridge; Armature winding is wrapped on the tooth root of tooth boots one and tooth boots two.
7. cylinder type moving-iron type permanent magnet linear generator according to claim 6, is characterized in that: the internal diameter of described tooth boots two is less than the internal diameter of tooth boots one, but is greater than the internal diameter of permanent magnet.
8. cylinder type moving-iron type permanent magnet linear generator according to claim 5, it is characterized in that: the axial length of each described permanent magnet is equal to the axial length of single multiple tooth iron core, permanent magnet is arranged in pairs vertically, and circumferentially the direction of magnetization of two adjacent permanent magnets is contrary.
9. cylinder type moving-iron type permanent magnet linear generator according to claim 5, is characterized in that: the axial length of described mover be greater than single multiple tooth iron core axial length with every magnetic bridge axial length sum.
10. cylinder type moving-iron type permanent magnet linear generator according to claim 1, is characterized in that: each described boss and each groove all curved.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510692473.7A CN105305671B (en) | 2015-10-22 | 2015-10-22 | A kind of cylinder type moving-iron type permanent magnet linear generator |
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| CN201510692473.7A CN105305671B (en) | 2015-10-22 | 2015-10-22 | A kind of cylinder type moving-iron type permanent magnet linear generator |
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| CN105305671A true CN105305671A (en) | 2016-02-03 |
| CN105305671B CN105305671B (en) | 2018-06-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995160A (en) * | 2017-12-25 | 2019-07-09 | 本田技研工业株式会社 | The rotor of rotating electric machine |
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|---|---|---|---|---|
| JPS5986466A (en) * | 1982-11-09 | 1984-05-18 | Yaskawa Electric Mfg Co Ltd | Permanent magnet field synchronous machine |
| US4713570A (en) * | 1986-06-04 | 1987-12-15 | Pacific Scientific Co. | Magnetically enhanced variable reluctance motor systems |
| JPH11215751A (en) * | 1998-01-23 | 1999-08-06 | Toshiharu Kawakami | Generator |
| CN101552535A (en) * | 2009-05-19 | 2009-10-07 | 哈尔滨工业大学 | Cylinder type flux-reversal linear machine |
| CN101789676A (en) * | 2010-03-10 | 2010-07-28 | 江苏大学 | Fault-tolerance permanent magnet linear motor |
| CN202455182U (en) * | 2012-03-14 | 2012-09-26 | 南京埃斯顿自动控制技术有限公司 | Permanent magnet motor rotor |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
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2015
- 2015-10-22 CN CN201510692473.7A patent/CN105305671B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5986466A (en) * | 1982-11-09 | 1984-05-18 | Yaskawa Electric Mfg Co Ltd | Permanent magnet field synchronous machine |
| US4713570A (en) * | 1986-06-04 | 1987-12-15 | Pacific Scientific Co. | Magnetically enhanced variable reluctance motor systems |
| JPH11215751A (en) * | 1998-01-23 | 1999-08-06 | Toshiharu Kawakami | Generator |
| CN101552535A (en) * | 2009-05-19 | 2009-10-07 | 哈尔滨工业大学 | Cylinder type flux-reversal linear machine |
| CN101789676A (en) * | 2010-03-10 | 2010-07-28 | 江苏大学 | Fault-tolerance permanent magnet linear motor |
| CN202455182U (en) * | 2012-03-14 | 2012-09-26 | 南京埃斯顿自动控制技术有限公司 | Permanent magnet motor rotor |
| CN104811011A (en) * | 2015-05-26 | 2015-07-29 | 哈尔滨工业大学 | Cylindrical type transverse magnetic-field permanent-magnet flux-switching linear motor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109995160A (en) * | 2017-12-25 | 2019-07-09 | 本田技研工业株式会社 | The rotor of rotating electric machine |
| CN109995160B (en) * | 2017-12-25 | 2021-02-09 | 本田技研工业株式会社 | Rotor of rotating electric machine |
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| CN105305671B (en) | 2018-06-26 |
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