CN103066781B - Linear generator used for sea wave power generation - Google Patents
Linear generator used for sea wave power generation Download PDFInfo
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- CN103066781B CN103066781B CN201110317444.4A CN201110317444A CN103066781B CN 103066781 B CN103066781 B CN 103066781B CN 201110317444 A CN201110317444 A CN 201110317444A CN 103066781 B CN103066781 B CN 103066781B
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Abstract
The invention discloses a linear generator used for sea wave power generation. The generator comprises four primary stators, one secondary mover and a mover bearing mechanism. The four primary stators are arranged on an outer side of a periphery of the secondary mover as a two symmetrical manner. A same air gap is arranged between the each primary stator and a relative side surface of the secondary mover so as to form four mutually independent flat-type linear generators. The mover bearing mechanism is arranged on the secondary mover so that the secondary mover moves along a same axis. The linear generator used for the sea wave power generation of the invention adapts a requirement of the sea wave power generation. Sea wave energy can be high-efficiently converted into electric energy. The generator possesses the following characteristics that the structure is compact; operation is reliable and so on. Under a same generating condition, a generating capacity of the generator is four times of the generating capacity of a unilateral flat-type linear generator.
Description
Technical field
The present invention relates to a kind of generator that can be used for seawave power generation, be specifically related to a kind of linear electric generator for seawave power generation.
Background technology
Along with the problem of environmental pollution day by day reducing and cause day by day serious of the non-renewable energy resources such as coal, oil, developing regenerative resource has become the strategic choice that international community solves human survival problem.Sea wave energy, as a kind of regenerative resource of cleanliness without any pollution, is one of major fields of various countries' development new forms of energy.It is estimated, the sea wave energy deposit of China can supply generating 110,000,000,000,000 kilowatt hour every year, and the prospect of its development and utilization is boundless.
Seawave power generation technology, is converted into the process of the electric energy being easy to utilize exactly by relevant intermediate link by the kinetic energy of ocean wave, power is that kinetic energy, the potential energy utilizing the lifting of wave to produce generates electricity, and it is one of reproducible energy electricity-generating method.In seawave power generation field, compared to traditional rotary generator, the rectilinear motion of wave can be directly changed into electric energy and not need by any intermediate conversion mechanism by linear electric generator, obviously has more competitiveness.Therefore, seawave power generation linear electric generator that is efficient, reliable, reasonable, simple possible is the demand in seawave power generation market.
The structure of the existing generator using wave as power has multiple, if the patent No. is 200810020658.3 disclose sea wave linear motor and comprise elementary stator and secondary mover, wherein, the both sides of secondary mover arrange two pieces of opposite polarity permanent magnets respectively up and down, elementary stator has two and is symmetrically located at the both sides of secondary mover, separate with air gap, the magnetic circuit on secondary mover both sides is separated by non-magnet material.Although this technical scheme compact conformation also can save the consumption of permanent magnet, energy conversion rate is not high, therefore can not obtain maximized generate output.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, provide a kind of linear electric generator for seawave power generation, it can adapt to the requirement of seawave power generation, can convert sea wave energy to electric energy efficiently, has compact conformation, the feature such as reliable.
The technical scheme realizing above-mentioned purpose is: a kind of linear electric generator for seawave power generation, comprises four elementary stators, a secondary mover and mover load carrier.Wherein, described four elementary stators, with outside the surrounding being arranged in described secondary mover between two symmetrically, keep identical air gap between each elementary stator with the side of relative secondary mover, to form four separate platypelloid type linear electric generators; Described mover load carrier comprises two cover linear axis assemblies, and this two covers linear axis assembly on symmetry axis is symmetrically arranged on described secondary mover, makes described secondary mover along same axial-movement with the center line of described secondary mover.
The above-mentioned linear electric generator for seawave power generation, wherein, described each elementary stator comprises elementary stator core and is embedded the elementary three-phase windings in elementary stator core; Described secondary mover comprises a casing and four groups of permanent magnets, the hollow housing of described casing to be a cross section be square, one group of location notch is offered with above-below direction respectively in four sides of this casing, two installing holes are offered accordingly in centrosymmetric mode respectively in the upper and lower end face of this casing; Described four groups of permanent magnets are arranged in the mounting groove on four sides of described casing in mode symmetrical between two one by one, often organize permanent magnet to be arranged above and below by the mode that adjacent permanent magnet polarity is contrary, and the polarity of the permanent magnet of two adjacent groups permanent magnet on same level position is also contrary; The described linear axis assembly of often overlapping comprises linear bearing in the installing hole be separately fixed at for a pair on described casing upper and lower end face and one and to intert in this pair linear bearing and the linear axis of described casing upper and lower end face is exposed at two.
The above-mentioned linear electric generator for seawave power generation, wherein, the height of described elementary stator is 1/1 to two/4th of the height of described casing.
The above-mentioned linear electric generator for seawave power generation, wherein, described two installing holes are opened on the same diagonal of described casing upper and lower end face.
The above-mentioned linear electric generator for seawave power generation, wherein, described air gap is 2 ~ 4mm.
The technical scheme of the linear electric generator for seawave power generation of the present invention, adopt four elementary stators with outside the surrounding being arranged in secondary mover between two symmetrically, and adopt two covers to be symmetrically arranged on linear axis assembly on secondary mover as mover load carrier, ensure, between each elementary stator with the side of relative secondary mover, there is identical air gap when secondary mover motion, make the permanent magnet on the secondary mover side of each elementary stator and its correspondence form a platypelloid type linear electric generator respectively, therefore form four platypelloid type linear electric generators.Linear electric generator for seawave power generation of the present invention is applicable to seawave power generation field, and this electric generator structure is compact, low cost of manufacture, reliable, energy conversion efficiency is high, and under identical power generation conditions, the generate output of this generator is four times of monolateral platypelloid type linear electric generator.
Accompanying drawing explanation
Fig. 1 is the front view of the linear electric generator for seawave power generation of the present invention;
Fig. 2 is the vertical view of Fig. 1;
Fig. 3 a is the body structure schematic diagram for mover secondary in the linear electric generator of seawave power generation of the present invention;
Fig. 3 b is the vertical view of Fig. 3 a;
Fig. 4 is the structural representation for often overlapping linear axis assembly in the linear electric generator of seawave power generation of the present invention.
Embodiment
Refer to Fig. 1 to Fig. 4, the linear electric generator for seawave power generation of the present invention, comprise four elementary stators, 1, secondary mover 2 and mover load carrier, wherein:
The elementary three-phase windings 12 that each elementary stator 1 comprises elementary stator core 11 and is embedded in elementary stator core 11;
Secondary mover 2 comprises a casing 21 and four groups of permanent magnets 22, the hollow housing of casing 21 (see Fig. 3 a and Fig. 3 b) to be a cross section be square, welded by steel sheet component and form, four sides of this casing 21 offer one group for accurately locating the location notch 211 of permanent magnet 22 with above-below direction respectively, the upper and lower end face of this casing 21 offers two installing holes 212 respectively accordingly, and these two installing holes 212 are opened on the same diagonal on casing 21 upper and lower end face in centrosymmetric mode; The material of permanent magnet 22 is neodymium iron boron; Four groups of permanent magnets 22 are to be arranged in the mounting groove 211 on four sides of casing 21 between two symmetrically one by one, often organize permanent magnet 22 to be arranged above and below by the mode that adjacent permanent magnet polarity is contrary, and the polarity of the permanent magnet 22 of two adjacent groups permanent magnet 22 on same level position is also contrary; The height of elementary stator 1 depends on generator designs capacity, and the height of secondary mover 2 must be greater than elementary stator 1 height of twice, and therefore the height of elementary stator 1 is 1/1 to two/4th of the height of casing 21;
Four elementary stators 1 are with outside the surrounding being arranged in secondary mover 2 between two symmetrically, and each elementary stator 1 keeps identical air gap with between the side of relative secondary mover 2, and this air gap is 2 ~ 4mm, to form four separate platypelloid type linear electric generators; Such layout makes the normal force produced between the permanent magnet 22 of motion and elementary stator 1 cancel out each other, and guarantees that the air gap between each elementary stator 1 with secondary mover 2 is equal, guarantees the reliability service of generator;
Mover load carrier comprises two cover linear axis assemblies, and the operation characteristic of linear bearing assembly is that resistance is little, and precision is high, has enough walking life-spans and gratifying bearing capacity; Often overlap linear axis assembly (see Fig. 4) to comprise linear bearing 31 in the installing hole 212 be separately fixed at for a pair on casing 21 upper and lower end face and one and to intert in this pair linear bearing 31 and the linear axis 32 of casing 21 upper and lower end face is exposed at two; The arrangement of two cover linear bearing assemblies can effectively offset the normal force produced between the two.
Because two cover linear axis assemblies are on symmetry axis is symmetrically arranged on secondary mover 2 with the center line of secondary mover 2, make secondary mover 2 along same axial-movement, effectively can retrain the walking road warp of secondary mover 2, air gap during guarantee generator operation between elementary stator 1 and secondary mover 2 remains unchanged, the bearing capacity of engine block can be increased again, improve the reliability of generator.
The operation principle of the linear electric generator for seawave power generation of the present invention is: the elementary stator 1 on generator and the linear axis 32 in mover load carrier are all fixed on the carrier of geo-stationary; Secondary mover 2 is connected with Wave energy transmission system, and secondary mover 2 freely can be walked in the stroke range of linear bearing 31.When ocean wave motion drives secondary mover 2 to move by energy delivery system, permanent magnet 22 produces the magnetic field of motion, the magnetic field of motion by elementary three-phase windings 12 cutting magnetic line, thus produces induced electromotive force in elementary three-phase windings 12, outwards powers eventually through the cable on elementary stator 1.
The feature of the linear electric generator for seawave power generation of the present invention is: four elementary stators 1 are distributed in outside the surrounding of secondary mover 2, one group of permanent magnet 22 on secondary mover 2 side of each elementary stator 1 and its correspondence forms a platypelloid type linear electric generator respectively, therefore forms four platypelloid type linear electric generators.Because four elementary stators 1 are with outside the surrounding being arranged in secondary mover 2 between two symmetrically, the normal force that produces between elementary stator 1 and secondary mover 2 therefore effectively can be eliminated on the impact of generator operation.When the linear reciprocating motion that ocean wave motion drives secondary mover 2 to produce relative to elementary stator 1 by transmission system, permanent magnet 22 on secondary mover 2 produces the magnetic field of motion, be placed in armature winding 12 cutting magnetic line on the iron core of elementary stator 1, thus induced electromotive force is produced in armature winding 12, outwards power eventually through cable.In the cycle that secondary mover 2 once moves, four the elementary stators 1 be positioned at outside its surrounding all produce induced electromotive force generating, and therefore energy conversion efficiency is high.Under identical power generation conditions, the generate output of this generator is four times of monolateral platypelloid type linear electric generator.
Those of ordinary skill in the art will be appreciated that, above embodiment is only used to the present invention is described, and be not used as limitation of the invention, as long as in spirit of the present invention, all will drop in Claims scope of the present invention the change of the above embodiment, modification.
Claims (3)
1., for a linear electric generator for seawave power generation, comprise four elementary stators, a secondary mover and mover load carrier, it is characterized in that,
Described four elementary stators, with outside the surrounding being arranged in described secondary mover between two symmetrically, keep identical air gap between each elementary stator with the side of relative secondary mover, to form four separate platypelloid type linear electric generators;
Described mover load carrier comprises two cover linear axis assemblies, and this two covers linear axis assembly on symmetry axis is symmetrically arranged on described secondary mover, makes described secondary mover along same axial-movement with the center line of described secondary mover;
Described each elementary stator comprises elementary stator core and is embedded the elementary three-phase windings in elementary stator core;
Described secondary mover comprises a casing and four groups of permanent magnets, the hollow housing of described casing to be a cross section be square, one group of location notch is offered with above-below direction respectively in four sides of this casing, two installing holes are offered accordingly in centrosymmetric mode respectively in the upper and lower end face of this casing; Described four groups of permanent magnets are arranged in the location notch on four sides of described casing in mode symmetrical between two one by one, often organize permanent magnet to be arranged above and below by the mode that adjacent permanent magnet polarity is contrary, and the polarity of the permanent magnet of two adjacent groups permanent magnet on same level position is also contrary;
The described linear axis assembly of often overlapping comprises linear bearing in the installing hole be separately fixed at for a pair on described casing upper and lower end face and one and to intert in this pair linear bearing and the linear axis of described casing upper and lower end face is exposed at two,
Described two installing holes are opened on the same diagonal of described casing upper and lower end face.
2. the linear electric generator for seawave power generation according to claim 1, is characterized in that, the height of described elementary stator is 1/1 to two/4th of the height of described casing.
3. the linear electric generator for seawave power generation according to claim 1, is characterized in that, described air gap is 2 ~ 4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317444.4A CN103066781B (en) | 2011-10-19 | 2011-10-19 | Linear generator used for sea wave power generation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110317444.4A CN103066781B (en) | 2011-10-19 | 2011-10-19 | Linear generator used for sea wave power generation |
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| Publication Number | Publication Date |
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| CN103066781A CN103066781A (en) | 2013-04-24 |
| CN103066781B true CN103066781B (en) | 2015-04-01 |
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| CN201110317444.4A Expired - Fee Related CN103066781B (en) | 2011-10-19 | 2011-10-19 | Linear generator used for sea wave power generation |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106870266B (en) * | 2017-04-13 | 2018-08-03 | 江苏科技大学 | It is a kind of to be used for underwater straight line differential power generator |
| CN107800265B (en) * | 2017-11-13 | 2020-01-17 | 中国科学院电工研究所 | Cylindrical transverse flux permanent magnet synchronous linear generator |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615400A (en) * | 2002-01-10 | 2005-05-11 | 瑞典海上能源公司 | A wave-power unit and the use of a wave-power unit for production of electric power, a method of generating electric power and a system of components for manufacturing a linear generator for a wave-po |
| CN101218653A (en) * | 2005-07-07 | 2008-07-09 | 皇家飞利浦电子股份有限公司 | Actuator assembly, method of driving an actuator assembly and apparatus for driving an actuator assembly |
| CN102137999A (en) * | 2008-08-28 | 2011-07-27 | 西贝斯特公司 | A wave-power unit, and a use of a such |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01264557A (en) * | 1988-04-15 | 1989-10-20 | Canon Inc | Linear motor |
| JPH0823669A (en) * | 1994-07-04 | 1996-01-23 | Copal Co Ltd | Linear actuator |
| JP2001286121A (en) * | 2000-03-31 | 2001-10-12 | Sanyo Denki Co Ltd | Cylinder-type linear motor |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1615400A (en) * | 2002-01-10 | 2005-05-11 | 瑞典海上能源公司 | A wave-power unit and the use of a wave-power unit for production of electric power, a method of generating electric power and a system of components for manufacturing a linear generator for a wave-po |
| CN101218653A (en) * | 2005-07-07 | 2008-07-09 | 皇家飞利浦电子股份有限公司 | Actuator assembly, method of driving an actuator assembly and apparatus for driving an actuator assembly |
| CN102137999A (en) * | 2008-08-28 | 2011-07-27 | 西贝斯特公司 | A wave-power unit, and a use of a such |
Non-Patent Citations (1)
| Title |
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| 海浪发电用永磁直线同步发电机参数分析以及结构优化;李丹;《中国优秀硕士学位论文全文数据库 工程科技Ⅱ辑》;20100815(第8期);第27-40、46-55页 * |
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Granted publication date: 20150401 Termination date: 20191019 |