CN101660481B - Sea wave linear motor driven by magnetic gear - Google Patents
Sea wave linear motor driven by magnetic gear Download PDFInfo
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- CN101660481B CN101660481B CN200910184161XA CN200910184161A CN101660481B CN 101660481 B CN101660481 B CN 101660481B CN 200910184161X A CN200910184161X A CN 200910184161XA CN 200910184161 A CN200910184161 A CN 200910184161A CN 101660481 B CN101660481 B CN 101660481B
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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
Abstract
The invention relates to a sea wave linear motor which is driven by a magnetic gear, comprising two structures which are both formed by a cylinder type permanent magnet synchronous linear motor and a cylinder type linear magnetic gear. The permanent magnet synchronous linear motor comprises a motor primary and a motor secondary, wherein, the motor primary comprises a primary iron core (1) and a primary winding (2); the primary iron core (1) is fixed at the bottom of the sea; the primary winding is embedded in a wire casing of the primary iron core; the motor secondary comprises a permanent magnet (3); the magnetic gear comprises a high speed side (3), a middle adjusting magnet ring (4), a low speed side (5) and an iron core (6); the magnetic gear high speed side is permanent magnet synchronous linear motor secondary (3); the adjusting magnet ring (4) in the middle part is fixed at the bottom of the sea; the magnetic gear low speed side comprises a permanent magnet (5) and an iron core (6) which are connected with a buoy (8) floating on the sea surface (9); an air gap (10) is arranged between the linear motor primary (1) and the linear motor secondary (3); an air gap (11) is arranged between the linear motor secondary (3) and the magnetic gear adjusting magnet ring (4); and an air gap (12) is arranged between the adjusting magnet ring (4) and the magnetic gear low speed side.
Description
Technical field
The present invention relates to the gear-driven sea wave linear motor of a kind of use magnetic, specifically is a kind of cylinder type permanent magnet linear synchronous generator that is applied to seawave power generation, the present invention relates to electrician, machine field.
Background technique
Whole world population constantly expands, and energy problem and environmental problem are increasingly serious, and people have to seek new energy and solve present crisis.The ocean area accounts for 70% of global surface area, and marine energy is one of the abundantest energy of reserves on the earth.Ocean energy is meant the renewable energy sources that is attached in the seawater, through the storage of various forms such as morning and evening tides, wave, exchange energy.Through the research in 40 years nearly; Chinese scholars has proposed the mode of multiple seawave power generation; Rotatablely move but be mostly to utilize all kinds of mechanical devices that the linear reciprocating motion of wave is converted to, and then carry out transformation of energy, have the scholar to propose to adopt linear electric motor directly to convert the straight line motion of wave to electric energy in recent years by electric rotating machine; And without any need for intermediate conversion mechanism, efficient is improved.But no matter be to adopt electric rotating machine or linear electric motor, because ocean wave motion speed is slower, generator volume and fair bigger; Manufacture cost is higher, if use conventional gearbox to carry out speedup, increases generator mover speed; Will inevitably bring system effectiveness to reduce, need problems such as periodic maintenance.Adopt the magnetic gear transmission; Both can solve the contradiction between wave phugoid motion speed and the generator volume, can avoid problems such as the directly loss that causes of contact of conventional gearbox, heating again, and need not to lubricate; There are not the machinery wearing and tearing; Noise free, and have good anti-overload ability, can effectively reduce the destruction that high sea causes system.
Summary of the invention
Technical problem: the deficiency that the present invention is directed to existing technology designs; Purpose is to reduce the running wastage of sea wave power generation system; Improve system effectiveness; In conjunction with wave linear reciprocating motion and the slow characteristics of movement velocity, the gear-driven cylindrical permanent synchronous linear of a kind of magnetic generator has been proposed, be applied to seawave power generation.
Technological scheme: the gear-driven ocean wave generator of magnetic of the present invention is used for bank seawave power generation off sea; Utilize the wave phugoid motion to drive magnetic gear low speed side by floating drum; And secondary by magnetic gear driven linear electric generator, improve the speed straight line to-and-fro motion speed that provides by wave.Elementary and the winding of linear electric motor is fixed in the seabed, and the elementary winding that cutting remained static when the secondary permanent magnet of linear electric motor moved back and forth produces induction electromotive force.Because frequency, speed that wave rises and falls are all non-constant,, can electric energy be transferred to electrical network or directly use to electric consumer so the present invention is transformed into power frequency through transducer with the electromotive force that produces.
This generator comprises a cylindrical permanent linear synchronous motor and a cylindrical linear magnetic gear; Permanent magnetic linear synchronous motor comprises electric motor primary, motor secondary; This electric motor primary comprises elementary iron core, elementary winding; Elementary iron core is fixed in the seabed, and elementary winding embeds in the wire casing of elementary iron core; Motor secondary comprises high-speed side; Straight line magnetic gear comprises high-speed side, middle tone magnet ring, low speed side and iron core; Wherein, high-speed side, low speed side are permanent magnet, are provided with low speed side in the outside of iron core; Be provided with the middle tone magnet ring in the outside of low speed side; The outside at the middle tone magnet ring is provided with high-speed side, is elementary iron core in the outside of high-speed side, and the middle tone magnet ring is fixed in the seabed; Low speed side links to each other with floating drum, and floating drum is across the sea floating; Be provided with first air gap between elementary iron core and the high-speed side; Be provided with interstice between high-speed side and the middle tone magnet ring; Middle tone magnet ring and low speed side are provided with the 3rd air gap.
Described high-speed side, low speed side are respectively the rings of being processed by the permanent-magnet material of a plurality of radial magnetizings, are arranged in order the formation cylinder type vertically, and its magnetizing direction of the ring that the permanent-magnet material of adjacent two radial magnetizings is processed is opposite, make magnetic field vertically by sinusoidal distribution.
The ring that described middle tone magnet ring is processed by ferromagnetic material and non-magnet material is spaced successively vertically and constitutes cylinder type.
Beneficial effect: the gear-driven sea wave linear motor of magnetic has following beneficial effect:
1) wave can be clean energy resource capable of circulation, and the present invention does not produce pollution, noiseless;
2) replace traditional electric rotating machine with linear electric motor, the linear reciprocating motion that has saved wave is transformed into the part that rotatablely moves, and is simple in structure, compact, and specific power is high;
3) movement velocity of magnetic gear low speed side is quickened by the magnetic gear; Reducing the generator volume, avoided problems such as the directly loss that causes of contact of conventional gearbox transmission, heating, need not to lubricate; There are not the machinery wearing and tearing; Noise free, and have good anti-overload ability, effectively reduce the destruction that high sea causes system.
4) system architecture is compact, and specific power is big.
5) adopt the rare-earth permanent magnet neodymium iron boron, and utilize adjustable magnetic ring modulation air-gap field, pushing force density is high.
Description of drawings
Fig. 1 is one of gear-driven ocean wave generator of magnetic---the outer high-speed structures (structure one) of interior low speed
Fig. 2 is two of the gear-driven ocean wave generator of magnetic---high-speed structures (structure two) in the outer low speed
Have among the figure: elementary unshakable in one's determination 1, elementary winding 2, high-speed side 3, middle tone magnet ring 4, low speed side 5, unshakable in one's determination 6, connecting shaft 7, floating drum 8, sea 9, the first air gaps 10, interstice 11, the 3rd air gap 12
Embodiment
First kind of structure:
The gear-driven sea wave linear motor of magnetic of the present invention; This generator comprises a cylindrical permanent linear synchronous motor and a cylindrical linear magnetic gear; Permanent magnetic linear synchronous motor comprises electric motor primary, motor secondary; This electric motor primary comprises elementary unshakable in one's determination 1, elementary winding 2, and elementary winding 2 embeds in elementary unshakable in one's determination 1 the wire casing, and elementary unshakable in one's determination 1 is fixed in the seabed; Motor secondary comprises high-speed side 3; Straight line magnetic gear comprises high-speed side 3, middle tone magnet ring 4, low speed side 5 and unshakable in one's determination 6; Wherein, high-speed side 3, low speed side 5 are permanent magnet, are provided with low speed side 5 in unshakable in one's determination 6 the outside; Be provided with middle tone magnet ring 4 in the outside of low speed side 5; Being provided with high-speed side 3 in the outside of middle tone magnet ring 4, is elementary unshakable in one's determination 1 in the outside of high-speed side 3, and middle tone magnet ring 4 is fixed in the seabed; Low speed side 5 links to each other with floating drum 8, and floating drum 8 swims on the sea 9; Elementary unshakable in one's determination 1 and high-speed side 3 between be provided with first air gap 10; Be provided with interstice 11 between high-speed side 3 and the middle tone magnet ring 4; Middle tone magnet ring 4 is provided with the 3rd air gap 12 with low speed side 5.
Second kind of structure do not have iron core 6 and connecting shaft 7 parts.
Described elementary unshakable in one's determination 1 is made up of common silicon steel material, identical with the generic linear motor manufacturing technology.
Said elementary winding 2 adopts distributed winding, reduces the induced electromotive force harmonic component.
Described secondary be the ring that the high-speed side 3 of magnetic gear is processed by the rare-earth permanent magnet NdFeB material of radial magnetizing, be arranged in order the formation cylinder type vertically, the magnetizing direction of adjacent two permanent-magnetic clamps is opposite, makes magnetic field vertically by sinusoidal distribution.
Described magnetic gear middle tone magnet ring 4, the ring of being processed by ferromagnetic material and non-magnet material is spaced vertically successively, constitutes cylinder type.
The ring that described magnetic gear low speed side 5 is processed by the rare-earth permanent magnet NdFeB material of radial magnetizing is arranged in order the formation cylinder type vertically, and the magnetizing direction of adjacent two permanent-magnetic clamps is opposite, makes magnetic field vertically by sinusoidal distribution.
In the described structure one, elementary unshakable in one's determination 1, the elementary winding 2 of linear electric motor is in the generator outside, and the magnetic gear is the outer high-speed structures of interior low speed in the inboard.Electric motor primary and magnetic gear adjustable magnetic ring are fixed in the seabed transfixion, and unshakable in one's determination 6 is ferromagnetic material in the middle of the magnetic gear low speed side, are connected input mechanical energy with floating drum 8 through connecting rod 7.Through magnetic gear speed-raising, linear electric motor are secondary does straight reciprocating motion, and permanent magnet cuts elementary winding 2, produces induction electromotive force.
In the described structure two, linear electric motor elementary unshakable in one's determination 1, elementary winding 2 is inboard at generator, the magnetic gear is high-speed structures in the outer low speed in the outside.Electric motor primary and magnetic gear adjustable magnetic ring are fixed in the seabed transfixion, and magnetic gear low speed side 5 directly is installed in the floating drum 8, constitute an integral body, input mechanical energy.Through magnetic gear speed-raising, linear electric motor are secondary does straight reciprocating motion, and permanent magnet cuts elementary winding 2, produces induction electromotive force.
Claims (4)
1. gear-driven sea wave linear motor of magnetic; It is characterized in that this generator comprises a cylindrical permanent linear synchronous motor and a cylindrical linear magnetic gear; Permanent magnetic linear synchronous motor comprises electric motor primary, motor secondary; This electric motor primary comprises elementary iron core (1), elementary winding (2), and elementary winding (2) embeds in the wire casing of elementary iron core (1), and elementary iron core (1) is fixed in the seabed; Motor secondary comprises high-speed side (3); Straight line magnetic gear comprises high-speed side (3), middle tone magnet ring (4), low speed side (5) and iron core (6); Wherein, high-speed side (3), low speed side (5) are permanent magnet, are provided with low speed side (5) in the outside of (6) unshakable in one's determination; Be provided with middle tone magnet ring (4) in the outside of low speed side (5); Being provided with high-speed side (3) in the outside of middle tone magnet ring (4), is elementary iron core (1) in the outside of high-speed side (3), and middle tone magnet ring (4) is fixed in the seabed; Low speed side (5) links to each other with floating drum (8), and floating drum (8) swims on the sea (9); Be provided with first air gap (10) between elementary iron core (1) and the high-speed side (3); Be provided with interstice (11) between high-speed side (3) and the middle tone magnet ring (4); Middle tone magnet ring (4) is provided with the 3rd air gap (12) with low speed side (5); Described high-speed side (3), low speed side (5) are respectively the rings of being processed by the permanent-magnet material of a plurality of radial magnetizings; Be arranged in order the formation cylinder type vertically; Its magnetizing direction of the ring that the permanent-magnet material of adjacent two radial magnetizings is processed is opposite, makes magnetic field vertically by sinusoidal distribution.
2. the gear-driven sea wave linear motor of magnetic according to claim 1 is characterized in that a permanent magnetic linear synchronous motor and a straight line magnetic gear are integrated, and utilizes wave to rise and fall and generates electricity.
3. the gear-driven sea wave linear motor of magnetic according to claim 1 is characterized in that magnetic gear low speed side links to each other with floating drum (8), and input wave ability improves permanent magnetic linear synchronous motor secondary (3) movement velocity through the magnetic gear.
4. the gear-driven sea wave linear motor of magnetic according to claim 1 is characterized in that the central spacer that described middle tone magnet ring (4) is processed by ferromagnetic material and non-magnet material constitutes cylinder type.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200910184161XA CN101660481B (en) | 2009-08-19 | 2009-08-19 | Sea wave linear motor driven by magnetic gear |
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| CN200910184161XA CN101660481B (en) | 2009-08-19 | 2009-08-19 | Sea wave linear motor driven by magnetic gear |
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| CN101660481B true CN101660481B (en) | 2012-04-25 |
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Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888164A (en) * | 2010-07-26 | 2010-11-17 | 东南大学 | Low-speed high-thrust single-air gap magnetic gear composite linear electric motor |
| CN101968025B (en) * | 2010-08-31 | 2012-09-19 | 东南大学 | Straight line wave power generator based on magnetic gear |
| CN102052232A (en) * | 2011-01-18 | 2011-05-11 | 浙江大学 | Small floating power generation device |
| CN103807085A (en) * | 2014-02-17 | 2014-05-21 | 东南大学 | Wave power generation device based on linear magnetic gear motor |
| CN104061116B (en) * | 2014-06-12 | 2016-08-17 | 东南大学 | A kind of wave energy generating set based on series connection straight line magnetic gear motor |
| CN104092351A (en) * | 2014-07-02 | 2014-10-08 | 东南大学 | Acceleration type linear magnetic gear permanent magnet composite motor |
| CN104578676B (en) * | 2015-01-04 | 2017-01-25 | 东南大学 | Linear magnetic gear with adjustable speed ratio |
| CN104578672A (en) * | 2015-01-22 | 2015-04-29 | 东南大学 | Cylinder type speed-changing linear permanent magnet generator used for wave power generation |
| CN104895731B (en) * | 2015-06-24 | 2017-05-03 | 电子科技大学 | Sea wave driven generator having composite rotary wind power generation function |
| CN106982006A (en) * | 2017-05-08 | 2017-07-25 | 南京邮电大学 | A kind of piezoelectricity electromagnetism combined vibrating energy capture device based on permeability magnetic material |
| SE543274C2 (en) * | 2019-03-04 | 2020-11-10 | Hagnesia Ab | Azimuthal or polodial flux machines |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201549978U (en) * | 2009-08-19 | 2010-08-11 | 东南大学 | Linear generator with magnetic gear for wave power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201549978U (en) * | 2009-08-19 | 2010-08-11 | 东南大学 | Linear generator with magnetic gear for wave power generation |
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