CN102437701A - Shore-based wave-power generator - Google Patents
Shore-based wave-power generator Download PDFInfo
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- CN102437701A CN102437701A CN2011104439531A CN201110443953A CN102437701A CN 102437701 A CN102437701 A CN 102437701A CN 2011104439531 A CN2011104439531 A CN 2011104439531A CN 201110443953 A CN201110443953 A CN 201110443953A CN 102437701 A CN102437701 A CN 102437701A
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Abstract
The invention discloses a shore-based wave-power generator, which comprises a vertically arranged annular stator and a rotor arranged on the axis of the stator. Stator coil slots are formed on the outer surface of the stator. A primary three-phase winding is embedded in the stator coil slot. The rotor comprises a rotor shaft, a substrate surrounding the rotor shaft and a Halbach array permanent magnet surrounding the substrate. The Halbach array permanent magnet comprises at least one permanent magnet array. Each permanent magnet array comprises four annular permanent magnets which are axially arranged in turn. An air gap is formed between the inner surface of the stator and the Halbach array permanent magnet. When the shore-based wave-power generator is used, the conventional permanent magnet is replaced by the Halbach array permanent magnet, so that the material cost of the permanent magnet is decreased; and a generated magnetic field is endowed with a higher sinusoidal property and stronger magnetic induction strength at the same time.
Description
Technical field
The present invention relates to a kind of bank base ocean wave generator that is used for seawave power generation.
Background technology
Wave has very huge energy, can rush to land to steamer from tsunami, even the building that can overthrow the bank just is not difficult to find out the huge of energy wherein, and wave can be the hydraulic power potentials with the performance of kinetic energy form.Have scientist once to estimate, on the sea of 1 sq-km, the power of wave ability is up to 2.0 * 100000 kilowatts; If we can rationally utilize wave, the kinetic energy of wave is converted into electric energy, this energy not only reserves is big, pollution-free; And be regenerative resource, inexhaustible; China is ocean big country in addition, and available marine resources are very abundant.
Ocean wave generator is to utilize the vertical displacement up and down of wave as power, and the pushing generator mover makes water can be converted into electric energy, and the electric energy that it produced is sent to the transformer station on bank earlier, sends into electrical network after boosting.
In the traditional line motor, direction of magnetization rotation between vertical air gap of the direction of magnetization of permanent magnet and adjacent magnets, because of symmetry, magnetic field is symmetrical in the permanent magnet array both sides.With Halbach type permanent magnet array, can be easy to obtain in the space can weaken the slot effect moment of motor greatly by the magnetic field of comparatively ideal Sine distribution.Even adopt every extremely less permanent magnet hop count (for example 3 sections, even 2 sections), also can be easy to obtain and the similar Distribution of Magnetic Field of desirable Halbach type permanent magnet array.The feasible slot effect moment of the motor of Halbach type permanent magnet array that adopts of These characteristics almost can be ignored, and helps improving motor properties.These characteristics explain that also the cost that will make this kind high-performance motor is not high, because pass through to adopt the Halbach type array of less hop count, and adopt simple winding and the non-flume structure of stator and rotor, just can obtain the magnetic field of desirable Sine distribution.
The cylinder type permanent magnet linear generator is arranged difference by the mover permanent magnet can be divided into the radial magnetizing structure, axial charging structure and Haier Bake array (Halbach) structure that magnetizes;
Radial magnetizing structure permanent magnet array needs mover to grip portion's magnetic conduction, and efficient is lower, and its magnetic is close mainly concentrates on shown in the permanent magnet.Be difficult to obtain sinusoidal magnetic field.The magnetic field of axial charging structure permanent magnet array is to be equally distributed at radially both direction up and down; The axial charging structure is had relatively high expectations to air gap, when air gap hour permanent magnet higher utilance is arranged, leakage field can enlarge markedly when air gap strengthens; Performance index such as power density, efficient obviously reduce; Therefore, the axial charging structure is not suitable for being applied in the air gaps linear electric motors, and its air gap flux density also is difficult to reach sinusoidal simultaneously.In practical application, be difficult to accomplish the desirable Halbach array that magnetizes, so constitute with sectional magnet in the practical application, every every of permanent magnet of is extremely descend arranged Approximate Equivalent ideal Halbach array by certain direction.
The mover of the patent of the patent No. 201020163714 " a kind of permanent magnet linear generator " is by mover core and place the non-magnet material in the mover core groove to form, but the magnetic flux density in its magnetic field and the existence of sine property are not enough.
Electricity field excitation linear motor has excitation loss to produce, and has reduced overall efficiency; The iron-free permanent-magnetism linear motor has that reluctance force is little, the positioning accuracy advantages of higher, and level and vertical drive power can be provided simultaneously, but because of there not being ferromagnetic material to constitute magnetic circuit, has low, the hypodynamic shortcoming of pulsing of air gap flux density.
Summary of the invention
Technical problem:The present invention is directed to the deficiency and the defective of prior art, a kind of bank base ocean wave generator that makes magnetic field have better sine property and stronger magnetic flux density is provided.
Technical scheme:A kind of bank base ocean wave generator; Comprise vertical setting annular stator be arranged on the mover on the said axis stator; Stator external surface is provided with stator slot winding; Stator slot winding is embedded with the utmost point three phase windings just, and mover comprises the mover axle, around the substrate of mover axle with around Haier's Bake array permanent magnet of substrate; Haier's Bake array permanent magnet comprises at least one group of permanent magnet array; Every group of permanent magnet array comprises four annular permanent magnets that axially are arranged in order along mover; Each magnetizing direction of organizing permanent magnet array puts in order identical; The magnetizing direction of four annular permanent magnets inwardly is followed successively by radially, axially upwards, radially outward, axially downwards from bottom to top in each permanent magnet array; Or axially upwards, radially outward, axially downwards, radially inside, or radially outward, axially downwards, radially inwardly, axially upwards, or axially downwards, radially inwardly, axially upwards, radially outward; Be provided with air gap between inner surface of stator and the Haier's Bake array permanent magnet.
Among the present invention, air gap is 0.5 to 1 centimetre gap between inner surface of stator and the Haier's Bake array permanent magnet.
The permanent magnet linear synchronous motor that is used for seawave power generation of the present invention is the basis with bank base sea wave generator station; Utilize sea beat generator permanent magnet mover to move up and down; The cutting straight line motor stator winding produces induced electromotive force; Use converter plant that the linear electric generator frequency translation is power frequency again, just can electricity be flowed to user or electrical network;
When the present invention does not move at inferior utmost point winding, have a stationary magnetic field that is produced by permanent magnet between the linear electric motors air gap, this magnetic field is Sine distribution by rectilinear direction; Stator winding does not have electric current to pass through; When wave comes, promote permanent magnet and move up and down, similar basically on the principle with electric rotating machine; Difference is that the magnetic field of linear electric motors is along the rectilinear direction translation; The stator winding cutting magnetic induction line will produce induced electromotive force, and when external circuit was closed, linear electric motors were just to the external circuit transmission of electric energy.
Beneficial effect:Magnetic field of the present invention is provided by permanent magnet, does not therefore have exciting current to pass through, and has reduced copper loss; Because do not have excitation winding, slip ring and brush, thereby improve reliability, made the probability that is short-circuited or opens a way reduce; Because the excitation field of magneto need not winding and insulation work, thereby the space that magnetic pole occupies reduces significantly, in less area of space, can obtain bigger magnetic field intensity; Because this machine operation is in wave, thereby the heat radiation of motor and cooling are very efficient.
Because this permanent magnet linear synchronous motor has used permanent magnet to replace electric excitation, and does not have excitation loss.Therefore, the efficient of permanent magnet linear synchronous motor is higher than electric field excitation linear synchronous generator, and need not from electrical network, to draw the exciting current that lags behind, thereby has greatly improved the overall efficiency of motor;
Of the present invention time utmost point permanent magnet is made up of Haier's Bake array permanent magnet, and the permanent magnet array of Haier's Bake array permanent magnet magnetizes by direction shown in Figure 2, makes that magnetic field sine property is better, magnetic flux density is stronger, can improve air gap flux density; Because of there are not 3 subharmonic in strong side magnetic field, can significantly reduce the pulsation of electromagnetic force.The present invention replaces traditional rotary generator with linear electric motors, need not contact and drives, and reduces dielectric loss, improves generating efficiency; And replace traditional permanent magnet with the Halbach permanent magnet, not only reduced the cost of permanent magnet material, also make the magnetic field sine property of generation better simultaneously, magnetic flux density is stronger.
Mover of the present invention adopts substrate overcoat magnet structure, does not adopt core material.Because the monolateral Distribution of Magnetic Field that Halbach magnet self-shielding effect produces no longer needs mover to adopt magnetic material for it path to be provided, make system that lower moment of inertia and fast-response ability preferably arranged;
With respect to traditional magneto framework, because the parallel magnetic field after the decomposition of Halbach magnet ring and the mutual superposition of radial magnetic field make the magnetic field intensity of opposite side promote significantly, can reduce the volume of motor so effectively, promote the power density of motor;
In traditional magneto,, generally deciding to take skewed slot to weaken its influence on the mover framework because inevitably there is harmonic wave in air-gap field.In the Halbach motor, because air-gap field Sine distribution degree is higher, harmonic content is little, need not skewed slot so decide mover;
Because the permanent magnetism working point of Halbach permanent magnet is higher, generally all above 0.9, has promoted the utilance of permanent magnetism;
Often adopt distributed winding to come the magnetomotive influence of reduced harmonic in the tradition magneto, because its magnetic field Sine distribution degree is higher, the harmonic field influence is less, so ocean wave generator of the present invention can adopt centralized winding in the Halbach motor;
The present invention adopts Halbach motor magnet array, and the bearing of motor is required to reduce greatly; Can bear the impact of wave, not fragile; Do not produce toxic gas, no additional noise, environment protection health.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further explain.
Fig. 1 is a permanent-magnetism linear motor axial section sketch map of the present invention.
Fig. 2 is a permanent-magnetism linear motor sectional axonometric drawing of the present invention, and arrow is depicted as the permanent magnet magnetizing direction among the figure.
Fig. 3 is a Halbach permanent magnet radial magnetizing structure.
Fig. 4 is a Halbach permanent magnet axial charging structure.
Fig. 5 is the Halbach permanent magnet ideal structure that magnetizes.
Fig. 6 is Halbach permanent magnet that the present invention the adopted structure that magnetizes.
Have among the figure: stator 1, stator slot winding 2, Haier's Bake array permanent magnet 3, mover axle 4, substrate 5, air gap 6, the first utmost point three phase windings 7.
Embodiment
As shown in Figure 1, this bank base ocean wave generator mainly comprises following a few part: stator 1, stator slot winding 2, Haier's Bake array permanent magnet 3, mover axle 4, substrate 5, air gap 6, the first utmost point three phase windings 7.
Embodiment 1: bank base ocean wave generator of the present invention; Comprise vertical setting annular stator 1 be arranged on the mover on stator 1 axis; Stator 1 adopts the magnetic conduction steel disc to laminate formation, and to strengthen magnetic density in the air gap, the outer surface of stator 1 is provided with stator slot winding 2; Stator slot winding 2 is embedded with the first utmost point three phase windings 7 of parallel placement, and elementary three phase windings 7 adopt enamelled wire to turn to concentrated winding; Mover comprises mover axle 4, around the substrate 5 of mover axle 4 with around Haier's Bake array permanent magnet 3 of substrate 5; Haier's Bake array permanent magnet 3 usefulness epoxy resin stick on the substrate 5; Substrate adopts non-magnetic stainless steel punching press to form, robustness and reliability when working to strengthen mover; Haier's Bake array permanent magnet 3 comprises at least one group of permanent magnet array; Every group of permanent magnet array comprises four annular permanent magnets that axially are arranged in order along mover; It all is identical that each magnetizing direction of organizing permanent magnet array puts in order; The magnetizing direction of four annular permanent magnets inwardly is followed successively by radially, axially upwards, radially outward, axially downwards from bottom to top in each permanent magnet array, between the inner surface of Haier's Bake array permanent magnet 3 and stator 1 0.5 centimetre gap is arranged.
Embodiment 2: in each permanent magnet array the magnetizing direction of four annular permanent magnets be followed successively by from bottom to top axially upwards, radially outward, axially downwards, radially inside; Between the inner surface of Haier's Bake array permanent magnet 3 and stator 1 0.8 centimetre gap is arranged, other are with embodiment 1.
Embodiment 3: the magnetizing direction of four annular permanent magnets is followed successively by radially outward, axially downwards, radially inwardly, axially upwards from bottom to top in each permanent magnet array; Between the inner surface of Haier's Bake array permanent magnet 3 and stator 1 0.6 centimetre gap is arranged, other are with embodiment 1.
Embodiment 4: the magnetizing direction of four annular permanent magnets is followed successively by axially downwards, radially inwardly, axially upwards, radially outward from bottom to top in each permanent magnet array; Between the inner surface of Haier's Bake array permanent magnet 3 and stator 11 centimetre gap is arranged; In the generator two bottom sides two rhones are set in addition; The seawater that drains to above the mover through air gap etc. just spills through this rhone, does not influence the use of equipment, and other are with embodiment 1.
Behind the installation in position of the present invention, generator bottom is fixed in the corresponding pipeline, and when seawater went up, seawater increased to certain position through pipeline and promotes mover then and move upward; When seawater fell, mover fell through self gravitation, thus mover along with the rise of seawater with fall to pumping, thereby the magnetic field of permanent magnet generation is being moved up and down, be equivalent to stator coil at cutting magnetic induction line.Produce electric current in the stator coil; This electric current is because the factor affecting such as frequency instability that seawater goes up and falls; So be not the electric current of certain frequency, needing through converter plant is power frequency with its frequency inverted, and the electric current after the conversion just can flow to the user and use or send into electrical network.
Claims (2)
1. bank base ocean wave generator; It is characterized in that; This ocean wave generator comprises the stator (1) of the annular of vertical setting and is arranged on the mover on said stator (1) axis; The outer surface of stator (1) is provided with stator slot winding (2), and stator slot winding (2) is embedded with the utmost point three phase windings (7) just, and said mover comprises mover axle (4), around the substrate (5) of said mover axle (4) with around Haier's Bake array permanent magnet (3) of said substrate (5); Said Haier Bake array permanent magnet (3) comprises at least one group of permanent magnet array; Said every group of permanent magnet array comprises four annular permanent magnets that axially are arranged in order along mover; Each magnetizing direction of organizing permanent magnet array puts in order identical; The magnetizing direction of four annular permanent magnets inwardly is followed successively by radially, axially upwards, radially outward, axially downwards from bottom to top in each permanent magnet array; Or axially upwards, radially outward, axially downwards, radially inside, or radially outward, axially downwards, radially inwardly, axially upwards, or axially downwards, radially inwardly, axially upwards, radially outward; Be provided with air gap (6) between the inner surface of stator (1) and the Haier's Bake array permanent magnet (3).
2. bank base Wave power generation device according to claim 1 is characterized in that, described air gap (6) is 0.5 to 1 centimetre gap between inner surface and the Haier's Bake array permanent magnet (3) of stator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104439531A CN102437701A (en) | 2011-12-27 | 2011-12-27 | Shore-based wave-power generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104439531A CN102437701A (en) | 2011-12-27 | 2011-12-27 | Shore-based wave-power generator |
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| CN102437701A true CN102437701A (en) | 2012-05-02 |
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| CN2011104439531A Pending CN102437701A (en) | 2011-12-27 | 2011-12-27 | Shore-based wave-power generator |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467343A (en) * | 2014-11-27 | 2015-03-25 | 金陵科技学院 | Cylindrical magnetic-pole combined linear generator |
| CN107453578A (en) * | 2017-06-12 | 2017-12-08 | 沈阳工业大学 | Magnetic flux parallel connection frequency multiplication cylinder type permanent magnet linear Oscillatory generator |
| CN107612199A (en) * | 2017-10-31 | 2018-01-19 | 天津昊野科技有限公司 | A kind of complete deep permagnetic synchronous motor in sea of built-in driving |
| CN110594078A (en) * | 2019-09-25 | 2019-12-20 | 深圳洋能科技有限公司 | Wave-activated generator |
| CN111416496A (en) * | 2020-04-26 | 2020-07-14 | 山东理工大学 | Moving-coil electromagnetic linear actuator based on combined Halbach array |
| CN114738175A (en) * | 2022-01-27 | 2022-07-12 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wave energy power generation device, and wind and wave integrated power generation system and method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567613A (en) * | 2009-01-22 | 2009-10-28 | 东南大学 | Linear permanent-magnet generator |
| CN102088237A (en) * | 2011-01-27 | 2011-06-08 | 东南大学 | Trapezoid coil-type permanent-magnetic coreless linear motor |
| CN202405988U (en) * | 2011-12-27 | 2012-08-29 | 东南大学 | Sea-wave power generator |
-
2011
- 2011-12-27 CN CN2011104439531A patent/CN102437701A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101567613A (en) * | 2009-01-22 | 2009-10-28 | 东南大学 | Linear permanent-magnet generator |
| CN102088237A (en) * | 2011-01-27 | 2011-06-08 | 东南大学 | Trapezoid coil-type permanent-magnetic coreless linear motor |
| CN202405988U (en) * | 2011-12-27 | 2012-08-29 | 东南大学 | Sea-wave power generator |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104467343A (en) * | 2014-11-27 | 2015-03-25 | 金陵科技学院 | Cylindrical magnetic-pole combined linear generator |
| CN107453578A (en) * | 2017-06-12 | 2017-12-08 | 沈阳工业大学 | Magnetic flux parallel connection frequency multiplication cylinder type permanent magnet linear Oscillatory generator |
| CN107453578B (en) * | 2017-06-12 | 2019-09-24 | 沈阳工业大学 | Magnetic flux parallel connection frequency multiplication cylinder type permanent magnet linear Oscillatory generator |
| CN107612199A (en) * | 2017-10-31 | 2018-01-19 | 天津昊野科技有限公司 | A kind of complete deep permagnetic synchronous motor in sea of built-in driving |
| CN110594078A (en) * | 2019-09-25 | 2019-12-20 | 深圳洋能科技有限公司 | Wave-activated generator |
| CN111416496A (en) * | 2020-04-26 | 2020-07-14 | 山东理工大学 | Moving-coil electromagnetic linear actuator based on combined Halbach array |
| CN111416496B (en) * | 2020-04-26 | 2024-04-05 | 山东理工大学 | Moving-coil electromagnetic linear actuator based on composite Halbach array |
| CN114738175A (en) * | 2022-01-27 | 2022-07-12 | 中国华能集团清洁能源技术研究院有限公司 | Offshore wave energy power generation device, and wind and wave integrated power generation system and method |
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Application publication date: 20120502 |