CN111156132A - Magnetic suspension vertical shaft disc type coreless wind driven generator - Google Patents

Magnetic suspension vertical shaft disc type coreless wind driven generator Download PDF

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Publication number
CN111156132A
CN111156132A CN201911396541.XA CN201911396541A CN111156132A CN 111156132 A CN111156132 A CN 111156132A CN 201911396541 A CN201911396541 A CN 201911396541A CN 111156132 A CN111156132 A CN 111156132A
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China
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magnetic
rotating shaft
magnetic pole
magnetic suspension
shell
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CN201911396541.XA
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Chinese (zh)
Inventor
冯亮亮
曹永娟
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Nanjing University of Information Science and Technology
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Nanjing University of Information Science and Technology
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Priority to CN201911396541.XA priority Critical patent/CN111156132A/en
Publication of CN111156132A publication Critical patent/CN111156132A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
    • F03D9/20—Wind motors characterised by the driven apparatus
    • F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/005—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor  the axis being vertical
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/061—Rotors characterised by their aerodynamic shape, e.g. aerofoil profiles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D3/00—Wind motors with rotation axis substantially perpendicular to the air flow entering the rotor 
    • F03D3/06—Rotors
    • F03D3/062—Rotors characterised by their construction elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
    • F03D—WIND MOTORS
    • F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
    • F03D80/70—Bearing or lubricating arrangements
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/02—Machines with one stator and two or more rotors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
    • F05B2280/00—Materials; Properties thereof
    • F05B2280/40—Organic materials
    • F05B2280/4003—Synthetic polymers, e.g. plastics
    • 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
    • Y02E10/70—Wind energy
    • Y02E10/74—Wind turbines with rotation axis perpendicular to the wind direction
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

The invention relates to a magnetic suspension vertical shaft disc type coreless wind driven generator, which comprises a blade device, a stator device and a rotor device, wherein the rotor device is arranged on the stator device; the stator device comprises a shell and a disc-shaped non-magnetic bracket fixed on the inner side of the shell, and a coil is wound on the bracket; the rotor device comprises a hollow magnetic suspension rotating shaft, a magnetic conduction disc fixed on the magnetic suspension rotating shaft and an annular magnetic pole fixed on the magnetic conduction disc; the lower end of the blade shaft is fixed on the upper end of the magnetic suspension rotating shaft; the lower end of the magnetic suspension rotating shaft extends into the shell and is rotationally connected with the shell, mutually matched magnetic pole pairs are respectively arranged at the positions, close to each other, of the magnetic suspension rotating shaft and the shell, and the magnetic pole pairs generate upward suspension force on the magnetic suspension rotating shaft; when the rotor device rotates, the coil on the bracket cuts the magnetic induction line of the annular magnetic pole to generate induction current. The generator can be started by breeze, and has the advantages of low loss, light weight, small vibration, low manufacturing cost and long service life.

Description

Magnetic suspension vertical shaft disc type coreless wind driven generator
Technical Field
The invention relates to a wind driven generator, in particular to a permanent magnet wind driven generator adopting a magnetic suspension hollow rotating shaft and a disc-shaped non-magnetic-conductive bracket.
Background
Most impeller shafts of the existing wind driven generators are horizontally arranged and are generally supported by bearings, and parts are abraded during operation, so that the requirements on the bearings are high, and the production cost is increased; in addition, the power generation efficiency is low even the power generation cannot be realized at low wind speed due to the large rotation resistance; the operation and maintenance can also need high-altitude operation, the danger is large, the construction and installation difficulty is also large, and the household use is not facilitated. In recent years, vertical axis wind driven generators are rapidly developed in the aspects of wind-solar complementary street lamps, charging piles, household electricity utilization and the like. However, the conventional vertical shaft disc type motor is difficult to get rid of the use of the ball bearing and the iron core, which not only increases the loss of the motor, but also increases the manufacturing cost of the motor. In addition, fan blades adopted by some small wind driven generators have the characteristics of high manufacturing process difficulty and small rotating moment, and the breeze starting is difficult to realize if the fan blades are Darihiki type blades. For example, a wind turbine designed as a vertical axis maglev wind turbine with chinese patent publication No. CN305178815S uses darrieus type blades.
In order to realize the breeze start of the wind driven generator, the Chinese patent publication No. CN204145234U entitled "a breeze start high-efficiency coreless disk type permanent magnet wind driven generator" adopts an axial magnetic flux coreless structure, the structure has no tooth-slot torque and small start torque, but the structure still does not get rid of the traditional ball bearing, and the equivalent air gap length is larger, the magnetic leakage is more, and the harmonic content is more obvious.
In order to realize low loss and breeze starting, the Chinese patent publication No. CN108843514A, named as 'a magnetic suspension impeller siphon wind power generator', adopts a magnetic suspension impeller and a siphon, and the structure has higher requirements on the direction of natural wind speed, and the suspension force provided by a permanent magnet material is too small.
In order to reduce the weight of the motor, chinese patent publication No. CN206259836U entitled "a combined sinusoidal disk type coreless permanent magnet wind generator" adopts a hollow rotating shaft and coreless disk type stator structure, which can reduce a part of the weight, but cannot get rid of the dependence on the conventional bearing, and the loss is still not small. In addition, heat dissipation measures and shock absorption measures are not provided, and the service life of the motor is greatly reduced. Therefore, it is a problem to provide a permanent magnet generator with a low wind start, low loss, light weight, low vibration, low manufacturing cost and long service life.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a magnetic suspension vertical shaft disc type coreless wind driven generator which is started by breeze, low in loss, light in weight, small in vibration, low in manufacturing cost and long in service life.
In order to achieve the purpose, the technical scheme provided by the invention is as follows: a magnetic suspension vertical shaft disc type coreless wind driven generator comprises a blade device, a stator device and a rotor device; the stator device comprises a shell and a disc-shaped non-magnetic bracket fixed on the inner side of the shell, and a coil is wound on the bracket; the rotor device comprises a hollow magnetic suspension rotating shaft, a magnetic conduction disc fixed on the magnetic suspension rotating shaft and an annular magnetic pole fixed on the magnetic conduction disc; the lower end of the blade shaft is fixed on the upper end of the magnetic suspension rotating shaft; the lower end of the magnetic suspension rotating shaft extends into the shell and is rotationally connected with the shell, the magnetic suspension rotating shaft and the shell are respectively provided with magnetic pole pairs which are matched with each other at mutually close positions, and the magnetic pole pairs generate upward suspension force on the magnetic suspension rotating shaft; when the rotor device rotates, the coil on the bracket cuts the magnetic induction lines of the annular magnetic poles.
The technical scheme is further designed as follows: the shell comprises an upper shell and a lower shell which are fixedly connected with each other, a cavity is arranged in the shell, and the support, the magnetic conduction disc and the annular magnetic pole are all arranged in the cavity.
The lower end of the magnetic suspension rotating shaft penetrates through the through hole of the upper shell and extends into the cavity, and the end part of the magnetic suspension rotating shaft extends into the groove; the magnetic pole pair comprises a bottom magnetic pole pair arranged in the groove and an inner side magnetic pole pair arranged in the through hole.
The wind driven generator also comprises a protection device and a damping device, wherein the protection device comprises an annular hollow cup body arranged at the upper part of the upper shell and an annular cylinder fixed on the magnetic suspension rotating shaft, the magnetic suspension rotating shaft penetrates through the annular hollow cup body, and the annular cylinder is positioned in the annular hollow cup body; the damping device is arranged inside the protection device.
The magnetic pole pair further comprises an upper shell surface magnetic pole pair, and two magnetic poles of the upper shell surface magnetic pole pair are respectively arranged at the bottom of the annular cylinder and the outer side of the upper shell.
The blade is fixed on the blade shaft through a bolt and is ear-shaped; the blade is made of glass fiber reinforced plastic composite materials.
The support is the dicyclo structure, and passes through the bolt fastening at the shell inboard, the coil slant winding is on the support.
Two magnetic conductive disks which are symmetrical up and down are fixed on the magnetic suspension rotating shaft, and an outer ring magnetic pole and an inner ring magnetic pole which are symmetrical up and down are respectively arranged on the two magnetic conductive disks.
The hollow cup body is fixed on the top of the outer side of the upper shell through a bolt, and the annular cylinder is fixed on the magnetic suspension rotating shaft through a bolt.
The damping device comprises an elastic material block and an upper side magnetic pole pair which are arranged on the inner side of the upper part of the annular hollow cup body, and two magnetic poles of the upper side magnetic pole pair are respectively arranged on the elastic material block and the top of the annular cylinder.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
1. the invention provides a magnetic suspension vertical shaft disc type coreless wind driven generator, which integrates the advantages of a horizontal shaft magnetic suspension motor and a vertical shaft disc type coreless motor, and comprises ear-shaped blades, a hollow magnetic suspension rotating shaft, two rotor discs, a stator bracket and a protective device outside a casing, wherein the stator is arranged on the inner sides of the two rotor discs to form an axial double-air-gap motor; meanwhile, the motor structurally reserves the characteristics of small eddy current loss, light weight and small volume of the disc-type coreless motor, is convenient to manufacture, is very suitable for being applied to fishing boats around large lakes and rural areas with remote geographic positions, and can be combined with photovoltaic power generation to form a wind-solar complementary power generation system, such as a wind-solar complementary street lamp, a wind-solar complementary charging pile and the like.
2. The ear-shaped blade is fixed on a blade shaft through a bolt, and a blade rotating shaft is fixed above a main shaft through a bolt; the ear-shaped blades are made of glass fiber reinforced plastic composite materials and are made into four twisted blades, and a certain space is formed in the middle of each blade; compared with the traditional blade, the ear-shaped blade has the characteristics of large forward stress area and small reverse stress area, so that the blade has the advantage of large rotating moment and is easy to realize breeze starting.
3. The magnetic suspension rotating shaft provides upward suspension force through the magnetic pole pair; compared with the traditional rotating shaft, the magnetic suspension rotating shaft is lighter in weight, the traditional ball bearing is not adopted, and only the rotating linear bearing with composite motion is adopted between the protective device and the rotating shaft, so that the friction loss is greatly reduced.
4. The stator device comprises a shell which is symmetrical up and down, wherein a disc-shaped non-magnetic bracket is arranged on the inner side of the shell; the middle of the bracket is provided with an axially extending ring, the bracket is fixed on the inner wall of the shell through a bolt, and the bracket is provided with a coil wound according to an oblique rule, so that the length of an effective lead for cutting magnetic induction lines in a magnetic field can be increased to a certain extent, and the power generation efficiency is improved; in addition, a coil is wound on the axially extending circular ring, magnetic induction lines can be cut between the inner ring magnetic pole and the outer ring magnetic pole, and magnetic leakage is reduced to a certain extent; and finally, the non-magnetic-conductive bracket adopts a heat-resistant polyurethane plastic bracket, so that the quality of the motor is reduced, and the eddy current loss is greatly reduced.
5. The two rotors have the same structure and are magnetic disks; the magnetic conductive disc is provided with an inner ring magnetic pole and an outer ring magnetic pole which are axially magnetized, the adjacent surfaces of the inner ring magnetic pole and the outer ring magnetic pole are arranged according to different polarities, and the magnetic poles which are symmetrical up and down are also correspondingly arranged according to different polarities; the permanent magnets on the disc are in surface-mounted structures, and are fixed by bolts after being adhered to the surface of the disc by anaerobic adhesive, so that the disc is convenient to manufacture, the magnetic leakage of a motor is greatly reduced, and the utilization rate of the permanent magnets is improved; meanwhile, the surface-mounted mounting mode is beneficial to heat dissipation of the permanent magnet material of the motor, heat loss is reduced, and the operation efficiency of the motor is further improved.
6. The protection device adopted by the motor mainly prevents the rotating shaft from running unstably when the wind speed is overlarge, and in addition, the elastic material adopts metal rubber, so that the vibration of the motor during running can be reduced.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the stent of FIG. 1;
FIG. 3 is a schematic view of the annular magnetic pole structure of FIG. 1;
FIG. 4 is a schematic diagram of the levitation force of the magnetic levitation spindle in FIG. 1;
FIG. 5 is a schematic view of the magnetic circuit of FIG. 1;
FIG. 6 is a schematic view of the shock absorbing device of FIG. 1;
fig. 7 is a schematic view of the coil winding of fig. 1.
In the above figures: the magnetic suspension type magnetic suspension rotor blade comprises a blade 1, a magnetic suspension rotating shaft 2, a blade shaft 2.1, a support 3, an outer ring magnetic pole 4.1, an inner ring magnetic pole 4.2, an inner side magnetic pole 4.3, an inner side magnetic pole two 4.3 ', an upper side magnetic pole one 4.4, an upper side magnetic pole two 4.4', a bottom magnetic pole one 4.5, a bottom magnetic pole two 4.5 ', an upper shell surface magnetic pole one 4.6, an upper shell surface magnetic pole two 4.6', an elastic material block 4.7, an upper shell 5.1, a lower shell 5.2, an annular cylinder 5.3, an annular hollow cup 5.4, a first bolt 6.1, a second bolt 6.2, a third bolt 6.3, a fourth bolt 6.4, a fifth bolt 6.5, a sixth bolt 6.6, a seventh bolt 6.7, a rotary linear bearing 8 and a magnetic conduction disc 9.
Detailed Description
The invention is described in detail below with reference to the figures and the specific embodiments.
Examples
As shown in fig. 1, the magnetic suspension vertical shaft disk type coreless wind driven generator of the embodiment comprises a blade device, a stator device and a rotor device; the blade device comprises a blade shaft 2.1 and a blade 1 fixed at the top of the blade shaft 2.1; in the embodiment, the blade 1 is in an ear shape and is fixed on a blade shaft 2.1 through a bolt, the blade 1 is made of glass fiber reinforced plastic composite materials into four twisted blades, and a certain space is formed in the middle of each blade; compared with the traditional blade, the ear-shaped blade has the characteristics of large forward stress area and small reverse stress area, so that the blade has the advantage of large rotating moment.
The stator device in the embodiment comprises a shell and a disc-shaped non-magnetic bracket 3 fixed on the inner side of the shell, wherein the shell comprises an upper shell 5.1 and a lower shell 5.2 which are fixedly connected together through a sixth bolt 6.6, and a cavity is arranged in the shell; a coil is wound on the bracket 3; the rotor device comprises a hollow magnetic suspension rotating shaft 2, two magnetic conductive discs 9 fixed on the magnetic suspension rotating shaft 2 through seventh bolts 6.7 and annular magnetic poles fixed on the magnetic conductive discs 9, wherein the two magnetic conductive discs 9 are arranged up and down symmetrically; the lower end of the blade shaft 2.1 is fixed on the upper end of the magnetic suspension rotating shaft 2 through a first bolt 6.1; the lower end of the magnetic suspension rotating shaft 2 extends into the shell and is rotatably connected with the shell. In the wind driven generator of the embodiment, the stator support 3 is arranged at the inner sides of the two rotor magnetic conductive discs 9 to form an axial double-air-gap motor, the two rotors are coaxially arranged, and the stator is fixed at the inner side of the shell to form a three-disc structure of an inner stator outer rotor.
In this embodiment, the support 3, the magnetic disc 9 and the annular magnetic pole are all disposed in the cavity of the housing. The upper shell 5.1 in the shell is provided with a through hole, the inner side of the bottom of the lower shell 5.2 is provided with a groove, the lower end of the magnetic suspension rotating shaft 2 penetrates through the through hole of the upper shell 5.1 and extends into the cavity, and the end part of the magnetic suspension rotating shaft extends into the groove.
The wind driven generator further comprises a protection device and a damping device, wherein the protection device comprises an annular hollow cup body 5.4 fixed on the upper part of an upper shell 5.1 through a fourth bolt 6.4 and an annular cylinder 5.3 fixed on a magnetic suspension rotating shaft 2 through a second bolt 6.2, the magnetic suspension rotating shaft penetrates through the top of the annular hollow cup body 5.4 and is rotatably connected with the annular hollow cup body 5.4 through a rotating linear bearing 8, and the annular cylinder 5.3 is positioned in the annular hollow cup body 5.4; the protection device mainly prevents the rotating shaft from running unstably when the wind speed is too high. The damping device is arranged inside the protection device.
As shown in fig. 2, the upper part is a side view of the holder 3, and the lower part is a plan view of the holder 3. The bracket 3 is composed of two axially extending circular rings, an inner circular ring, an outer circular ring and a strip-shaped body for fixing the circular rings. The support 3 is fixed on the inner wall of the shell through a fifth bolt 6.5, and coils which are wound obliquely according to the horizontal and vertical rules are arranged on the support 3 and the axially extending circular ring.
Wherein: the diameters of the two axially extending circular rings are equal to the diameter of the inner circular ring, the diameter of the inner circular ring is between the diameter of the outer annular surface of the inner ring magnetic pole 4.2 and the diameter of the inner annular surface of the outer ring magnetic pole 4.1, and the two axially extending circular rings are supported by the strip-shaped body to extend in different directions;
wherein: the distance between the two axially extending rings to the upper and lower discs 9 should be greater than the distance between the poles 4.4 and 4.4' in the protection device.
As shown in fig. 3, the two rotors have the same structure and are both magnetic conductive alloy discs; the magnetic conductive disc 9 is provided with an inner ring magnetic pole 4.2 and an outer ring magnetic pole 4.1 which are axially magnetized, the adjacent surfaces of the inner ring magnetic pole 4.2 and the outer ring magnetic pole 4.1 are arranged according to different polarities, and the magnetic poles which are symmetrical up and down are also correspondingly arranged according to different polarities; permanent magnets on the disc are in surface-mounted structures, and are fixed by third bolts 6.3 after being adhered to the surface of the disc by anaerobic adhesive; except the magnetic poles on the rotor which are fixed by bolts, the other magnetic poles are all adhered to the surface of the permanent magnet by adopting anaerobic adhesive. The inner ring magnetic pole 4.2 is composed of four same annular strip magnetic poles, and the outer ring magnetic pole 4.1 is composed of eight annular strip magnetic poles with different lengths.
As shown in fig. 4, the magnetic suspension rotating shaft 2 mainly provides an upward suspension force by the bottom magnetic pole pair, the inner magnetic pole pair and the upper casing surface magnetic pole pair; the bottom magnetic pole pair comprises a bottom magnetic pole I4.5 and a bottom magnetic pole II 4.5 ', the inner magnetic pole pair comprises an inner magnetic pole I4.3 and an inner magnetic pole II 4.3 ', the upper shell surface magnetic pole pair comprises an upper shell surface magnetic pole I4.6 and an upper shell surface magnetic pole II 4.6 ', wherein the bottom magnetic pole I4.5 and the bottom magnetic pole II 4.5 ' are both axially magnetized cylindrical magnetic poles with certain thickness and are arranged by utilizing the principle of like-pole repulsion, the bottom magnetic pole I4.5 is arranged at the bottom end of the magnetic suspension rotating shaft 2, and the bottom magnetic pole II 4.5 ' is arranged in a groove of the lower shell 5.2 to provide an upward suspension force for the magnetic suspension rotating shaft 2; the inner side magnetic pole I4.3 and the inner side magnetic pole II 4.3 ' are radial magnetized annular magnetic poles with certain height difference, the inner side magnetic pole I4.3 is fixed on the magnetic suspension rotating shaft 2, and the inner side magnetic pole II 4.3 ' is arranged at the inner side of the through hole of the upper shell 5.1, particularly, the position of the inner side magnetic pole I4.3 is higher than that of the inner side magnetic pole II 4.3 ', and an oblique upward suspension force is formed by utilizing the height difference and the principle of like-pole repulsion; the first upper shell surface magnetic pole 4.6 and the second upper shell surface magnetic pole 4.6 'are axially magnetized hollow cylinder magnetic pole pairs with certain thickness, the first upper shell surface magnetic pole 4.6 is fixed on the upper surface of the upper shell, the second upper shell surface magnetic pole 4.6' is fixed at the bottom of the annular cylinder 5.3, and an upward suspension force is provided for the magnetic suspension rotating shaft 2 by utilizing the principle of like-pole repulsion; the three forces act together to suspend the magnetic suspension rotating shaft 2.
As shown in fig. 5, the constant magnetic flux starts from the outer ring magnetic pole 4.1 and passes through the air gap, and the winding on the stator support 3, the air gap, the outer ring magnetic pole 4.1, the magnetic conductive disc 9 and the air gap, the axially extending winding on the stator support 3, the magnetic conductive disc 9 and the air gap, the inner ring magnetic pole 4.2, the air gap, the winding on the stator support 3, the air gap, the inner ring magnetic pole 4.2, the magnetic conductive disc 9 and the air gap, the axially extending winding on the stator support 3, the magnetic conductive disc 9 and the air gap, and returns to the outer ring magnetic pole 4.1 to form a closed.
As shown in fig. 6, the damping device comprises an elastic material block 4.7 arranged inside the upper part of the annular hollow cup 5.4 and an upper magnetic pole pair, wherein the upper magnetic pole pair comprises an upper magnetic pole one 4.4 and an upper magnetic pole two 4.4'; the first upper magnetic pole 4.4 is arranged on the elastic material block 4.7, and the second upper magnetic pole 4.4' is arranged on the top of the annular cylinder 5.3. In the embodiment, the elastic material 4.7 is made of metal rubber material and is fixed on the protection device through bolts or adhered to the protection device through anaerobic glue.
The upper magnetic pole one 4.4 and the upper magnetic pole two 4.4' are also axially magnetized hollow cylindrical magnetic pole pairs with certain thickness, wherein the upper magnetic pole pair generates a downward force on the rotating shaft by utilizing the principle that like poles repel each other, and the force plus the gravity of the rotating shaft per se is balanced with the three forces shown in the figure 4.
As shown in fig. 7, the bracket 3 is provided with coils obliquely wound according to the horizontal, vertical and horizontal rules, and the bracket 3 is a non-magnetic and heat-resistant polyurethane plastic bracket; the horizontal-vertical-horizontal rule refers to the winding rule of the coil from an outer ring to a radial strip body, an inner ring, an axial strip body and an axial extension ring.
The magnetic suspension vertical shaft disc type coreless wind driven generator of the embodiment has the following working principle:
as shown in fig. 1, when the blades 1 are subjected to a certain wind speed, the blades 1 drive the magnetic suspension rotating shaft 2 to rotate, and the magnetic suspension rotating shaft 2 drives the magnetic conductive disc 9 and the inner ring magnetic pole 4.2 and the outer ring magnetic pole 4.1 which are symmetrical up and down to rotate; since the stator frame 3 is stationary, it can be seen that the coil cuts the magnetic induction lines between the magnetically conductive discs 9, thereby generating an induced current.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (10)

1. A magnetic suspension vertical shaft disk type coreless wind driven generator is characterized in that: the device comprises a blade device, a stator device and a rotor device; the stator device comprises a shell and a disc-shaped non-magnetic bracket fixed on the inner side of the shell, and a coil is wound on the bracket; the rotor device comprises a hollow magnetic suspension rotating shaft, a magnetic conduction disc fixed on the magnetic suspension rotating shaft and an annular magnetic pole fixed on the magnetic conduction disc; the lower end of the blade shaft is fixed on the upper end of the magnetic suspension rotating shaft; the lower end of the magnetic suspension rotating shaft extends into the shell and is rotationally connected with the shell, the magnetic suspension rotating shaft and the shell are respectively provided with magnetic pole pairs which are matched with each other at mutually close positions, and the magnetic pole pairs generate upward suspension force on the magnetic suspension rotating shaft; when the rotor device rotates, the coil on the bracket cuts the magnetic induction lines of the annular magnetic poles.
2. The magnetic suspension vertical shaft disc type coreless wind driven generator according to claim 1, wherein: the shell comprises an upper shell and a lower shell which are fixedly connected with each other, a cavity is arranged in the shell, and the support, the magnetic conduction disc and the annular magnetic pole are all arranged in the cavity.
3. The magnetic suspension vertical shaft disc type coreless wind driven generator according to claim 2, wherein: the lower end of the magnetic suspension rotating shaft penetrates through the through hole of the upper shell and extends into the cavity, and the end part of the magnetic suspension rotating shaft extends into the groove; the magnetic pole pair comprises a bottom magnetic pole pair arranged in the groove and an inner side magnetic pole pair arranged in the through hole.
4. The magnetically levitated vertical-axis disc-type coreless wind turbine of claim 3, wherein: the magnetic suspension device comprises an annular hollow cup body arranged at the upper part of an upper shell and an annular cylinder fixed on a magnetic suspension rotating shaft, wherein the magnetic suspension rotating shaft penetrates through the annular hollow cup body, and the annular cylinder is positioned in the annular hollow cup body; the damping device is arranged inside the protection device.
5. The magnetically levitated vertical-axis disc-type coreless wind turbine of claim 4, wherein: the magnetic pole pair further comprises an upper shell surface magnetic pole pair, and two magnetic poles of the upper shell surface magnetic pole pair are respectively arranged at the bottom of the annular cylinder and the outer side of the upper shell.
6. The magnetic suspension vertical shaft disc type coreless wind driven generator according to claim 1, wherein: the blades are fixed on the blade shaft through bolts; the blade is made of glass fiber reinforced plastic composite materials.
7. The magnetic suspension vertical shaft disc type coreless wind driven generator according to claim 1, wherein: the support is the dicyclo structure, and passes through the bolt fastening at the shell inboard, the coil slant winding is on the support.
8. The magnetic suspension vertical shaft disc type coreless wind driven generator according to claim 1, wherein: two magnetic conductive disks which are symmetrical up and down are fixed on the magnetic suspension rotating shaft, and an outer ring magnetic pole and an inner ring magnetic pole which are symmetrical up and down are respectively arranged on the two magnetic conductive disks.
9. The magnetically levitated vertical-axis disc-type coreless wind turbine of claim 4, wherein: the hollow cup body is fixed on the top of the outer side of the upper shell through a bolt, and the annular cylinder is fixed on the magnetic suspension rotating shaft through a bolt.
10. The magnetically levitated vertical-axis disc-type coreless wind turbine of claim 4, wherein: the damping device comprises an elastic material block and an upper side magnetic pole pair which are arranged on the inner side of the upper part of the annular hollow cup body, and two magnetic poles of the upper side magnetic pole pair are respectively arranged on the elastic material block and the top of the annular cylinder.
CN201911396541.XA 2019-12-30 2019-12-30 Magnetic suspension vertical shaft disc type coreless wind driven generator Pending CN111156132A (en)

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CN113217305A (en) * 2021-05-17 2021-08-06 广州赛特新能源科技发展有限公司 Composite shaft of wind driven generator and wind driven generator
CN113606089A (en) * 2021-08-21 2021-11-05 深圳市洹汉科技创新有限公司 Wind power generation system
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GB2618856A (en) * 2022-05-28 2023-11-22 Paunovic Nenad Device for fluid kinetic energy extraction and conversion
CN118481912A (en) * 2024-07-05 2024-08-13 北京菲普勒动力科技有限公司 Magnetic suspension breeze generator with speed control protection

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CN113217305A (en) * 2021-05-17 2021-08-06 广州赛特新能源科技发展有限公司 Composite shaft of wind driven generator and wind driven generator
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CN118481912A (en) * 2024-07-05 2024-08-13 北京菲普勒动力科技有限公司 Magnetic suspension breeze generator with speed control protection

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