CN202405989U - Low speed large torque permanent magnet cursor straight line wave-activated generator - Google Patents
Low speed large torque permanent magnet cursor straight line wave-activated generator Download PDFInfo
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- CN202405989U CN202405989U CN2012200203286U CN201220020328U CN202405989U CN 202405989 U CN202405989 U CN 202405989U CN 2012200203286 U CN2012200203286 U CN 2012200203286U CN 201220020328 U CN201220020328 U CN 201220020328U CN 202405989 U CN202405989 U CN 202405989U
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- iron core
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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Abstract
The utility model relates to a low speed large torque permanent magnet cursor straight line wave-activated generator. The generator comprises a motor primary and a motor secondary, wherein the motor secondary is isolated from the motor primary for an air gap; the motor primary comprises a cylindrical primary iron core (1), primary windings (2) and magnetic flux modulation electrodes (3); convex teeth which protrude out of the surface of the primary iron core (1) are arranged at the periphery of the primary iron core (1); the magnetic flux modulation electrodes (3) are arranged on the convex teeth; the secondary windings (2) are embedded into line grooves between adjacent convex teeth of the primary iron core (1); the primary iron core (1) is fixed under the water; the motor secondary comprises permanent magnets (4), a cylindrical rotor iron core (5) and a buoy (6); the permanent magnets (4) at the low speed side are axially distributed in equal distances along the surface of the cylindrical rotor iron core (5); and the rotor iron core (5) is fixed inside the buoy (6). According to the generator, a larger effective magnetic harmonic wave component and a larger output torque are provided; and the magnetic flux density and the iron core loss of a rotor iron core magnet yoke are reduced.
Description
Technical field
The utility model relates to a kind of Halbach low speed large torque moment permanent-magnet vernier straight line wave-activated generator, belongs to the wave power generation technical field.
Background technology
Water body is being contained huge energy, and in today of world energy sources growing tension, wave power generation becomes the important directions of development new forms of energy.And traditional wave-activated generator adopted is electric rotating machine, and low, the poor durability of efficient when low speed becomes the key factor of restriction wave power generation development.In recent years, the vertical displacement up and down that Chinese scholar proposition employing linear electric motors directly utilize wave is as power, and the secondary rectilinear motion of drive motors produces electric energy, can make the raising of whole system efficient, ILS etc.But because wave motion speed is lower, traditional gear box that adopts carries out speed governing as intermediate link, and with increase motor secondary speed, and gear box increases the whole drive system volume and weight, also has problems such as noise, wearing and tearing, response time length simultaneously.
If adopt Halbach low speed large torque moment permanent-magnet vernier straight line wave-activated generator; Introducing through magnetic flux Wehnelt electrode on the elementary iron core; High-speed side and adjustable magnetic ring structure independently in traditional magnetic gear have been saved; Make electric machine structure more simple, both can governing speed, solved again that mechanical gear drive system noise is high, problems such as efficient is low, transmission precision is low, low-response, mechanical wear.Therefore, be necessary to propose a kind of linear electric motors device to promote the development of wave power generation.
Summary of the invention
Technical problem:The utility model is to the defective of wave power generation prior art; Propose a kind of low speed large torque moment permanent-magnet vernier straight line wave-activated generator, utilize the modulating action of magnetic flux Wehnelt electrode on the electric motor primary iron core, save adjustable magnetic ring and magnetic high-speed gear side in traditional magnetic gear structure; With magnetic gear low speed side as the motor secondary permanent magnet; Make structure simpler, and reduced the loss of electric machine, volume and weight, improved efficient and durability.Simultaneously secondary permanent magnet adopts special Halbach array, and bigger effective magnetic field harmonic wave composition and output torque can be provided, and reduces the magnetic flux density of mover iron core yoke, reduces core loss.
Technical scheme:For solving the problems of the technologies described above, the utility model provides a kind of low speed large torque moment permanent-magnet vernier straight line wave-activated generator, and this motor comprises electric motor primary, is separated with the motor secondary of air gap with electric motor primary;
Electric motor primary comprises columned elementary iron core, elementary winding, magnetic flux Wehnelt electrode; The periphery of elementary iron core is provided with outstanding its surperficial double wedge, on double wedge, is provided with the magnetic flux Wehnelt electrode, and elementary winding embeds in the wire casing between the adjacent double wedge of elementary iron core, and elementary iron core is fixed in the bottom;
Motor secondary comprises permanent magnet, mover iron core cylindraceous, floating drum; The permanent magnet of low speed side axially equidistantly distributes along mover iron core cylindraceous surface, and the mover iron core is fixed in the floating drum, and mover iron core and floating drum are done as a whole swimming on the water surface.
Preferably, between mover iron core and the elementary winding air gap is arranged.
Preferably, the material of permanent magnet is a neodymium iron boron, and every permanent magnet is divided into three parts, and every part of magnetizing direction difference makes magnetic field vertically by Sine distribution.
Preferably, electric motor primary iron core and mover core material are silicon steel sheet.
Preferably, the floating drum material is a non-magnet_conductible material.
Preferably, permanent magnet pole logarithm n
rWith elementary winding number of pole-pairs n
pSum is the number n of magnetic flux Wehnelt electrode
s
Beneficial effect:
(1) saves the mechanical speed-changing gear case, do not had mechanical wear, maintenance and the noise problem of gear box, improved the motor reliability.Improve motor speed simultaneously, reduced volume, weight and the manufacturing cost of motor;
(2) motor is single gap structure, and processing technology is simple, and stability and reliability are improved;
(3) the more magnetic line of force is arranged through air gap in the motor, so effective harmonic wave composition value of air gap flux density is higher than general magnetic field modulation system magneto, the output torque increases;
(4) electric mover iron core yoke magnetic flux density can reduce in a large number, and this will reduce mover iron core magnetic vibrating feeder yoke core loss, dwindles mover iron core yoke portion size, saves material;
(5) isolate through unshakable in one's determination between the motor secondary permanent magnet, blocked flowing each other of eddy current in each permanent magnet, reduced the eddy current loss in the permanent magnet;
(6) the mover iron core adopts high energy product neodymium iron boron excitation, does not have slip ring and brush, need not the additional power source excitation, have simple in structure, volume little in light weight, power density is high, efficient is high and advantage such as good reliability.
Description of drawings
Fig. 1 is the utility model structural representation;
Wherein have: elementary iron core 1, elementary winding 2, magnetic flux Wehnelt electrode 3, permanent magnet 4, mover iron core 5, floating drum 6, the water surface 7;
Fig. 2 is the local permanent magnet magnetizing direction of a utility model magnetic gear low speed side sketch map;
Wherein have: elementary iron core 1, elementary winding 2, magnetic flux Wehnelt electrode 3, permanent magnet 4, mover iron core 5.
Permanent magnet 4 each utmost point are divided into three parts, and the arrow direction is the magnetizing direction of this part permanent magnet among the figure, and the equal scalable of the width of every part of permanent magnet and magnetizing direction is to reach maximum power output.
Embodiment
Below with reference to accompanying drawings the utility model is described.
The utility model relates to a kind of low speed large torque moment permanent-magnet vernier straight line wave-activated generator; It is through the magnetic field modulation effect of magnetic flux Wehnelt electrode on the electric motor primary iron core; Can when guaranteeing magnetic gear motor advantage, save adjustable magnetic ring and the high-speed side of magnetic gear in traditional magnetic gear structure, shortcoming such as solved in the wave power generation that used electric machine volume is big, system complex, efficient are low.It saves the high-speed side of traditional magnetic gear, has realized the integration of magnetic gear and linear electric motors.
Referring to Fig. 1, the low speed large torque moment permanent-magnet vernier straight line wave-activated generator that Fig. 2, the utility model provide, is separated with the motor secondary of air gap with electric motor primary at electric motor primary;
Electric motor primary comprises columned elementary iron core 1, elementary winding 2, magnetic flux Wehnelt electrode 3; The periphery of elementary iron core 1 is provided with outstanding its surperficial double wedge, on double wedge, is provided with magnetic flux Wehnelt electrode 3, and in the wire casing between the adjacent double wedge of the elementary iron core 1 of elementary winding 2 embeddings, elementary iron core (1) is fixed in the bottom;
Motor secondary comprises permanent magnet 4, mover iron core cylindraceous 5, floating drum 6; The permanent magnet 4 of low speed side axially equidistantly distributes along mover iron core cylindraceous 5 surfaces, and mover iron core 5 is fixed in the floating drum 6, and mover iron core 5 is done as a whole swimming on the water surface 7 with floating drum 6.
Between mover iron core 5 and the elementary winding 2 air gap is arranged.
The material of permanent magnet 4 is a neodymium iron boron, and every permanent magnet is divided into three parts, and every part of magnetizing direction difference makes magnetic field vertically by Sine distribution.
Electric motor primary iron core 1 is silicon steel sheet with mover iron core 5 materials.
Floating drum 6 materials are non-magnet_conductible material.
Permanent magnet 4 number of pole-pairs n
rWith elementary winding 2 number of pole-pairs n
pSum is the number n of magnetic flux Wehnelt electrode 3
s
Magnetic gear low speed side is secondary permanent magnet 4, and to evenly being attached to mover iron core 5 surfaces, mover iron core 5 is fixed in the floating drum 6 permanent magnet along Cylindorical rod, and they do as a whole swimming on the water surface 7.Permanent magnet pole logarithm n
rWith elementary winding number of pole-pairs n
pSum is the number n of magnetic flux Wehnelt electrode 3
sElementary winding field pole logarithm is the attainable speed no-load voltage ratio of this motor with the ratio of secondary permanent magnet pole logarithm.Adopt new Halbach array on the electric mover iron core 5; Compare with radial magnetizing general magnetic field modulation system magneto; Owing to can utilize finite element optimization adjustment permanent magnet width ratio and magnetizing direction; So it can provide bigger effective magnetic field harmonic wave composition and output torque, reduce the magnetic flux density and the core loss of mover iron core yoke.
The low speed large torque moment permanent-magnet vernier straight line wave-activated generator that the utility model proposes is used for the offshore wave power generation; Utilizing the heaving of the sea campaign directly to promote floating drum moves up and down; Make the modulating action of the magnetic field process magnetic flux Wehnelt electrode of the secondary permanent magnet generation that is fixed in the floating drum; The elementary winding that cutting remains static produces induced electromotive force.Because the modulating action of magnetic flux Wehnelt electrode; Can regulate the size in magnetic field; Therefore can realize being equivalent to make the effect of mover speedup; The effect of the high electromotive force of elementary winding internal induction when reaching mover low speed is converted into power frequency with converter plant with the electromotive force that produces again, just can give user or electrical network with power delivery.
The low speed large torque moment permanent-magnet vernier straight line wave-activated generator of the utility model, this motor will comprise electric motor primary, motor secondary; Electric motor primary comprises columned elementary iron core, elementary winding, magnetic flux Wehnelt electrode; Elementary iron core adopts the embedded cursor structure of salient pole, and the little toothed portion of salient pole is the magnetic flux Wehnelt electrode on the elementary iron core, and elementary winding embeds in the wire casing of elementary iron core, and elementary iron core is fixed in the bottom; Motor secondary comprises permanent magnet, mover iron core cylindraceous, floating drum; Magnetic gear low speed side is secondary permanent magnet, and it axially evenly distributes along mover iron core cylindraceous surface, and the mover iron core is fixed in the floating drum, and they do as a whole swimming on the water surface.
Described permanent magnet is the ring of being processed by the neodymium iron boron of a plurality of radial magnetizings, and distributing vertically constitutes cylindrical shape, and evenly is attached to mover iron core surface, and every permanent magnet is divided into three parts by a certain percentage, and every part of magnetizing direction difference makes magnetic field vertically by Sine distribution.
Described permanent magnet adopts special Halbach array; Utilize finite element can optimize and revise permanent magnet width ratio and magnetizing direction; Compare with radial magnetizing general magnetic field modulation system magneto; It can provide bigger effective magnetic field harmonic wave composition and output torque, reduces the magnetic flux density and the core loss of mover iron core yoke.
When wave promotes floating drum with speed
up and down during rectilinear motion; Magnetic field modulation effect through the magnetic flux Wehnelt electrode; The speed in the magnetic field that in elementary air gap, modulates is
, and this magnetic field and electric motor primary winding produce relative motion and send electric energy.
The utility model is a low speed large torque moment permanent-magnet vernier straight line wave-activated generator; Magnetic flux Wehnelt electrode 3 has replaced the adjustable magnetic ring to carry out magnetic field modulation; Magnetic gear low speed side is secondary permanent magnet 4; To evenly being attached to mover iron core 5 surfaces, mover iron core 5 is fixed in the floating drum 6 along Cylindorical rod for it, and they do as a whole swimming on the water surface 7.Permanent magnet pole logarithm n
rWith elementary winding number of pole-pairs n
pSum is the number n of magnetic flux Wehnelt electrode 3
s, elementary winding field pole logarithm is the attainable speed no-load voltage ratio of this motor with the ratio of permanent magnet pole logarithm.
Described elementary winding 2 adopts distributed winding, to reduce the induced electromotive force harmonic component.
Described permanent magnet 4 is rings of being processed by the neodymium iron boron of a plurality of radial magnetizings; Distributing vertically constitutes cylindrical shape, and evenly is attached to mover iron core surface, and every permanent magnet is divided into three parts by a certain percentage; Every part of magnetizing direction difference makes magnetic field vertically by Sine distribution.
The utility model utilizes space harmonics to transmit magnetic field and energy based on the space magnetic field modulation principle of magnetic flux Wehnelt electrode, and the magnetic circuit form of motor is that cylinder ring is to magnetic circuit.When wave promotes floating drum with speed
when moving up and down; Be fixed on the modulating action of the magnetic field of the permanent magnet generation in the floating drum through the magnetic flux Wehnelt electrode; In near the air gap of elementary winding, produce a modulating wave magnetic field along the cylinder axial translation; Its speed is
; This magnetic field and electric motor primary winding produce relative motion, and cutting produces induced electromotive force and sends electric energy.The speed no-load voltage ratio equals magnetic gear low speed side permanent magnet and counts n
rWith elementary winding field pole logarithm n
pThe ratio.Generally, permanent magnet is counted n
rGreater than elementary winding field pole logarithm n
pSo this can realize motor generator operation under low-speed conditions.
This motor secondary permanent magnet adopts special Halbach array; Utilize finite element optimization adjustment permanent magnet width ratio and magnetizing direction; Bigger effective magnetic field harmonic wave composition and output torque can be provided, reduce the magnetic flux density and the core loss of mover iron core yoke.
The above is merely the preferred embodiments of the utility model; The protection range of the utility model does not exceed with above-mentioned execution mode; As long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.
Claims (6)
1. low speed large torque moment permanent-magnet vernier straight line wave-activated generator is characterized in that: this motor comprises electric motor primary, is separated with the motor secondary of air gap with electric motor primary;
Electric motor primary comprises columned elementary iron core (1), elementary winding (2), magnetic flux Wehnelt electrode (3); The periphery of elementary iron core (1) is provided with outstanding its surperficial double wedge, on double wedge, is provided with magnetic flux Wehnelt electrode (3), and elementary winding (2) embeds in the wire casing between the adjacent double wedge of elementary iron core (1), and elementary iron core (1) is fixed in the bottom;
Motor secondary comprises permanent magnet (4), mover iron core cylindraceous (5), floating drum (6); The permanent magnet of low speed side (4) axially equidistantly distributes along mover iron core cylindraceous (5) surface, and mover iron core (5) is fixed in the floating drum (6), and mover iron core (5) and floating drum (6) are done as a whole swimming on the water surface (7).
2. low speed large torque moment permanent-magnet vernier straight line wave-activated generator according to claim 1 is characterized in that: between mover iron core (5) and the elementary winding (2) air gap is arranged.
3. low speed large torque moment permanent-magnet vernier straight line wave-activated generator according to claim 1, it is characterized in that: the material of permanent magnet (4) is a neodymium iron boron, and every permanent magnet is divided into three parts, and every part of magnetizing direction difference makes magnetic field vertically by Sine distribution.
4. low speed large torque moment permanent-magnet vernier straight line wave-activated generator according to claim 1 is characterized in that: electric motor primary iron core (1) and mover iron core (5) material are silicon steel sheet.
5. low speed large torque moment permanent-magnet vernier straight line wave-activated generator according to claim 1 is characterized in that: floating drum (6) material is a non-magnet_conductible material.
6. low speed large torque moment permanent-magnet vernier straight line wave-activated generator according to claim 1 is characterized in that: permanent magnet (4) number of pole-pairs n
rWith elementary winding (2) number of pole-pairs n
pSum is the number n of magnetic flux Wehnelt electrode (3)
s
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200203286U CN202405989U (en) | 2012-01-17 | 2012-01-17 | Low speed large torque permanent magnet cursor straight line wave-activated generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200203286U CN202405989U (en) | 2012-01-17 | 2012-01-17 | Low speed large torque permanent magnet cursor straight line wave-activated generator |
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| Publication Number | Publication Date |
|---|---|
| CN202405989U true CN202405989U (en) | 2012-08-29 |
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|---|---|---|---|
| CN2012200203286U Expired - Fee Related CN202405989U (en) | 2012-01-17 | 2012-01-17 | Low speed large torque permanent magnet cursor straight line wave-activated generator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102570770A (en) * | 2012-01-17 | 2012-07-11 | 东南大学 | Low-speed high-torque permanent-magnet cursor linear wave generator |
| WO2018105754A3 (en) * | 2016-10-18 | 2018-08-23 | RI, Yongjin | Method for increasing the electric power output by weakening the electromagnetic braking force to be exerted on the rotor of electric generator |
| CN108512358A (en) * | 2018-04-28 | 2018-09-07 | 天津大学 | The compound multiport wave-activated generator of magnetic gear |
| CN110676985A (en) * | 2019-09-20 | 2020-01-10 | 哈尔滨工业大学（深圳） | Design method of non-uniform tooth permanent magnet vernier motor |
| US11936270B2 (en) | 2011-10-27 | 2024-03-19 | The University Of British Columbia | Displacement devices and methods for fabrication, use and control of same |
-
2012
- 2012-01-17 CN CN2012200203286U patent/CN202405989U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11936270B2 (en) | 2011-10-27 | 2024-03-19 | The University Of British Columbia | Displacement devices and methods for fabrication, use and control of same |
| CN102570770A (en) * | 2012-01-17 | 2012-07-11 | 东南大学 | Low-speed high-torque permanent-magnet cursor linear wave generator |
| WO2018105754A3 (en) * | 2016-10-18 | 2018-08-23 | RI, Yongjin | Method for increasing the electric power output by weakening the electromagnetic braking force to be exerted on the rotor of electric generator |
| CN108512358A (en) * | 2018-04-28 | 2018-09-07 | 天津大学 | The compound multiport wave-activated generator of magnetic gear |
| CN110676985A (en) * | 2019-09-20 | 2020-01-10 | 哈尔滨工业大学（深圳） | Design method of non-uniform tooth permanent magnet vernier motor |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120829 Termination date: 20140117 |