CN201730753U - Five-degree-of-freedom full-suspension vertical axis wind driven generator with outer rotor structure - Google Patents

Five-degree-of-freedom full-suspension vertical axis wind driven generator with outer rotor structure Download PDF

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Publication number
CN201730753U
CN201730753U CN2010202675723U CN201020267572U CN201730753U CN 201730753 U CN201730753 U CN 201730753U CN 2010202675723 U CN2010202675723 U CN 2010202675723U CN 201020267572 U CN201020267572 U CN 201020267572U CN 201730753 U CN201730753 U CN 201730753U
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permanent
rotor
stator
magnetic suspension
permanent magnet
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Expired - Fee Related
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CN2010202675723U
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张广明
王德明
梅磊
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Nanjing Tech University
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Nanjing Tech University
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/70Wind energy
    • Y02E10/74Wind turbines with rotation axis perpendicular to the wind direction

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Abstract

A five-degree-of-freedom full-suspension vertical axis wind driven generator with an outer rotor structure comprises fan blades, a shell, a permanent magnet type radial magnetic suspension bearing rotor A, a permanent magnet type radial magnetic suspension bearing rotor B, an electromagnetic permanent magnet mixed type axial magnetic suspension bearing rotor A, an electromagnetic permanent magnet mixed type axial magnetic suspension bearing rotor B, a generator rotor, a permanent magnet type radial magnetic suspension bearing stator B, a generator stator, an electromagnetic permanent magnet mixed type axial magnetic suspension bearing stator and a permanent magnet type radial magnetic suspension bearing stator A, wherein the permanent magnet type radial magnetic suspension bearing rotor A and the permanent magnet type radial magnetic suspension bearing rotor B are respectively positioned at the bottom and the top of the; the electromagnetic permanent magnet hybrid type axial magnetic suspension bearing stator is positioned between the electromagnetic permanent magnet hybrid type axial magnetic suspension bearing rotor A and the electromagnetic permanent magnet hybrid type axial magnetic suspension bearing rotor B; the two ends of the stator shaft extend out of the housing from the top and bottom of the housing, respectively. The utility model discloses maintenance cost is low, wind energy utilization is high, the starting wind speed is low, has wide application prospect in the wind power generation field.

Description

The five-freedom degree full-suspension vertical shaft wind power generator of outer-rotor structure
Technical field
The present invention relates to a kind of magnetic suspension vertical shaft wind-driven generator of outer-rotor structure, specifically is a kind of five-freedom degree full-suspension vertical shaft wind power generator of outer-rotor structure, belongs to technical field of wind power generation.
Background technique
The principle of wind-power electricity generation is to utilize wind-force to drive the generator amature rotation to produce electric energy, by different generation modes are compared, can find that wind-power electricity generation is the green electric power supply on the complete meaning---pollution-free, renewable, nexhaustible.The wind energy amount of accumulateing in the whole world is huge, is about 2.74 * 109MW.Available wind energy is about 2 * 107MW, is about 10 times that developable water on the earth can total amount.THE WIND ENERGY RESOURCES IN CHINA is abundant, and the wind energy content that can develop is about 1,000,000,000 kW, and wherein, the land wind energy content is about 2.53 hundred million kW (liftoff 10m height), but the wind energy content of sea development and utilization is about 7.5 hundred million kW.Pay attention to today of energy-conserving and environment-protective in countries in the world, wind-power electricity generation is to improving ball ecological environment, and reducing atmospheric pollution has very positive effect, and the research and the application of wind-power electricity generation also all more and more paid attention in countries in the world.
In wind-power electricity generation; the wind energy that can be used to produce electric energy is between the incision wind speed and shuts down wind speed section between the wind speed; reduce and start wind speed and cut the utilization that wind speed just can increase available wind energy; just can under identical wind speed, produce more electric energy, thereby can utilize wind-force to generate electricity more fully.But, when the design wind-driven generator, in order to obtain lower incision wind speed, have to reduce the output power of wind-driven generator, in order to solve this contradiction, people have been applied to magnetic levitation technology in the supporting of wind power generator rotor, replace traditional mechanical bearing with magnetic suspension bearing, do the frictional force that not only can significantly reduce between rotor and bearing like this, friction torque, realize " the light breeze starting; breeze wind " of wind-driven generator, enlarge the utilization ratio of wind resource, improve generating efficiency, can also exempt the high cost of mechanical bearing operation and maintenance in the past, reduce cost of wind power generation, this not only helps the development of popularizing of China's wind-power electricity generation and wind-powered electricity generation cause, and China's enforcement energy-saving and emission-reduction work is played important impetus.
Difference according to blade shaft, wind-driven generator can be divided into horizontal axis wind-driven generator and vertical axis aerogenerator, horizontal axis wind-driven generator is that development both at home and abroad is maximum at present, the most common also is the most ripe a kind of wind-driven generator of technology, its starting torque is bigger, the power coefficient height, but in order to make wind wheel all the time over against wind direction, the wind-driven generator of the type need be equipped with device for regulating direction.The blade of horizontal axis wind-driven generator is in the process that rotates a circle, be subjected to the comprehensive function of inertial force and gravity, the direction of inertial force changes at any time, and the direction of gravity is constant all the time, what blade was suffered like this is exactly an alternate load, and this fatigue strength for blade is very disadvantageous.In addition, the generator of horizontal axis all places tens meters high-altitude, and this has brought a lot of inconvenience for the installation and maintenance maintenance of generator.The stressing conditions of the blade of vertical axis rotor in the process of rotation is good more than horizontal axis, because the direction of inertial force and gravity is constant all the time, suffered is a permanent load, so fatigue life is than the length of horizontal axis.Simultaneously, the generator of vertical shaft can be placed on the bottom or the ground of wind wheel, be convenient to installation and maintenance, but vertical axis aerogenerator exists starting performance poor, the shortcoming that starting wind velocity is high, this has limited its extensive use in wind power generation field, in order to address this problem, the general magnetic suspension bearing technology that adopts suspends generator amature to reduce the suffered frictional force of rotor, improves the starting performance of generator.Whether controlled according to suspending power, magnetic suspension bearing can be divided into passive-type and active two types.The passive-type magnetic suspension bearing mainly utilizes repulsion intrinsic between the magnetic material or suction (between permanent-magnet material, between permanent-magnet material and the soft magnetic material) to realize the suspension of rotating shaft, and it is simple in structure, and power loss is few.Active magnetic suspension bearing mainly is a stable suspersion of realizing rotating shaft by the magnetic force between the ACTIVE CONTROL stator and rotor, the complete active magnetic levitation bearing system of one cover is made up of magnetic suspension bearing body, displacement transducer, controller and power amplifier usually, set up the difference of mode according to bias magnetic field, active magnetic suspension bearing can be divided into full electromagnetic type and electromagnet and permanent magnet hybrid type.The bias magnetic field and the controlling magnetic field of full electromagnetic type magnetic suspension bearing produce by electromagnet; Electromagnet and permanent magnet hybrid magnetic suspension bearing adopts permanent-magnet material to set up bias magnetic field, can reduce the power loss of magnetic suspension bearing largely.
Summary of the invention
The objective of the invention is to propose the five-freedom degree full-suspension vertical shaft wind power generator of the outer-rotor structure that a kind of maintenance cost is low, wind energy utilization is high, starting wind velocity is low.
The present invention includes fan blade, shell, lay respectively at permanent-magnet type radial magnetic bearing A rotor, the permanent-magnet type radial magnetic bearing B rotor at outer casing bottom and top, be installed in electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B, generator amature on the outer casing inner wall, be arranged on permanent-magnet type radial magnetic bearing B stator, generator unit stator, electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator, permanent-magnet type radial magnetic bearing A stator on the stator axis from top to bottom; Permanent-magnet type radial magnetic bearing B stator is positioned at permanent-magnet type radial magnetic bearing B rotor, and generator unit stator is positioned at generator amature, and permanent-magnet type radial magnetic bearing A stator is positioned at permanent-magnet type radial magnetic bearing A rotor; Electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator is between electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B; Shell is stretched out from the top and the bottom of shell respectively in the two ends of stator axis.
Between above-mentioned permanent-magnet type radial magnetic bearing B stator exterior edge face and the permanent-magnet type radial magnetic bearing B rotor interior edge face, between generator unit stator exterior edge face and the generator amature interior edge face, between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator lower end surface and the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A upper-end surface, between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator upper-end surface and the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B lower end surface, all there is air gap between permanent-magnet type radial magnetic bearing A stator exterior edge face and the permanent-magnet type radial magnetic bearing A rotor interior edge face.
The effect of above-mentioned air gap mainly is the medium as the magnetic field energy storage, the preferred 0.3~1.5mm of its width.
Above-mentioned permanent-magnet type radial magnetic bearing A rotor, permanent-magnet type radial magnetic bearing B rotor embed the bottom and the top of shell respectively, and its exterior edge face is positioned on the same plane with the exterior edge face, bottom and the exterior edge face, top of shell respectively; Accordingly, the exterior edge face of permanent-magnet type radial magnetic bearing A stator, permanent-magnet type radial magnetic bearing B stator also is positioned on the same plane with the exterior edge face, bottom and the exterior edge face, top of shell respectively.
Based on said structure, magnetic suspending wind turbine generator of the present invention has the following advantages:
The present invention utilizes two permanent-magnet type radial magnetic bearings to realize that rotors are four radially suspensions on the degrees of freedom, utilize an electromagnet and permanent magnet mixed type axial magnetic suspension bearing to realize the suspension of rotor in axial freedom, not only realized the full suspension of rotor, maintenance cost, frictional loss have been reduced, reduced the incision wind speed, and simplified the structure of wind-driven generator magnetic levitation bearing system, and reduced the energy loss of magnetic levitation bearing system, improved the efficient of transformation of energy.With respect to traditional vertical axis aerogenerator, the present invention has numerous advantages such as wind energy utilization height, starting wind velocity are low, noise free, has wide market application prospect.
Description of drawings
Fig. 1 is the magnetic suspension vertical shaft wind-driven generator structure floor map of outer-rotor structure.
Label title among Fig. 1: 1, fan blade.2, shell.3, permanent-magnet type radial magnetic bearing A rotor.4, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A.5, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B.6, generator amature.7, permanent-magnet type radial magnetic bearing B rotor.8, permanent-magnet type radial magnetic bearing B stator.9, stator axis.10, generator unit stator.11, electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator.12, permanent-magnet type radial magnetic bearing A stator.
Embodiment
As shown in Figure 1, permanent-magnet type radial magnetic bearing A rotor 3, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A 4, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5, generator amature 6, permanent-magnet type radial magnetic bearing B rotor 7 all are sleeved on shell 2 inside, its exterior edge face all contacts with the interior edge face of shell 2, and fan blade 1 is fixed on the exterior edge face of shell 2.Wherein, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A 4 is between permanent-magnet type radial magnetic bearing A rotor 3, electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5 is between generator amature 6, electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11, and generator amature 6 is between permanent-magnet type radial magnetic bearing B rotor 7, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5.Permanent-magnet type radial magnetic bearing B stator 8, generator unit stator 10, electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11, permanent-magnet type radial magnetic bearing A stator 12 all are sleeved on stator axis 9 outsides, and its interior edge face all contacts with the exterior edge face of stator axis 9.Wherein, permanent-magnet type radial magnetic bearing B stator 8 is arranged in the axis hole that permanent-magnet type radial magnetic bearing B rotor 7 interior edge faces form, and has small air gap between permanent-magnet type radial magnetic bearing B stator 8 exterior edge faces and permanent-magnet type radial magnetic bearing B rotor 7 interior edge faces; Generator unit stator 10 is arranged in the axis hole that generator amature 6 interior edge faces form, and has small air gap between generator unit stator 10 exterior edge faces and generator amature 6 interior edge faces; Electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11 is between electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A 4, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5, and there is small air gap between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11 lower end surfaces and electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A 4 upper-end surfaces, has small air gap between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11 upper-end surfaces and the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5 lower end surface; Permanent-magnet type radial magnetic bearing A stator 12 is arranged in the axis hole that permanent-magnet type radial magnetic bearing A rotor 3 interior edge faces form, and has small air gap between permanent-magnet type radial magnetic bearing A stator 12 exterior edge faces and permanent-magnet type radial magnetic bearing A rotor 3 interior edge faces.
The present invention utilizes the interaction between interaction, permanent-magnet type radial magnetic bearing B rotor 7 and the permanent-magnet type radial magnetic bearing B stator 8 between permanent-magnet type radial magnetic bearing A rotor 3 and the permanent-magnet type radial magnetic bearing A stator 12 to realize the driven suspension of rotor on four degrees of freedom radially, utilizes interaction between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator 11 and electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A 4, the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B5 to realize the active suspension of rotor axial degrees of freedom.
When adopting the present invention to utilize wind-power electricity generation, wind is to fan blade 1, and fan blade 1 drives shell 2 and rotates, and shell 2 drives and is sleeved on its inner generator amature 6 rotations, makes generator unit stator 10 send electric energy.

Claims (4)

1. the five-freedom degree full-suspension vertical shaft wind power generator of an outer-rotor structure, it is characterized in that: comprise fan blade (1), shell (2), lay respectively at the permanent-magnet type radial magnetic bearing A rotor (3) at shell (2) bottom and top, permanent-magnet type radial magnetic bearing B rotor (7), be installed in the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A (4) on shell (2) inwall, electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B (5), generator amature (6) is arranged on the permanent-magnet type radial magnetic bearing B stator (8) on the stator axis (9) from top to bottom, generator unit stator (10), electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator (11), permanent-magnet type radial magnetic bearing A stator (12); Permanent-magnet type radial magnetic bearing B stator (8) is positioned at permanent-magnet type radial magnetic bearing B rotor (7), generator unit stator (10) is positioned at generator amature (6), and permanent-magnet type radial magnetic bearing A stator (12) is positioned at permanent-magnet type radial magnetic bearing A rotor (3); Electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator (11) is positioned between electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A (4), the electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B (5); Shell is stretched out from the top and the bottom of shell (2) respectively in the two ends of stator axis (9).
2. generator as claimed in claim 1 is characterized in that: between permanent-magnet type radial magnetic bearing B stator (8) exterior edge face and permanent-magnet type radial magnetic bearing B rotor (7) interior edge face, between generator unit stator (10) exterior edge face and generator amature (6) interior edge face, between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator (11) lower end surface and electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor A (4) upper-end surface, between electromagnet and permanent magnet mixed type axial magnetic suspension bearing stator (11) upper-end surface and electromagnet and permanent magnet mixed type axial magnetic suspension bearing rotor B (5) lower end surface, all there is air gap between permanent-magnet type radial magnetic bearing A stator (12) exterior edge face and permanent-magnet type radial magnetic bearing A rotor (3) interior edge face.
3. generator as claimed in claim 2 is characterized in that: the width in described institute crack is between 0.3~1.5mm.
4. as claim 1 or 2 or 3 described generators, it is characterized in that: permanent-magnet type radial magnetic bearing A rotor (3), permanent-magnet type radial magnetic bearing B rotor (7) embed the bottom and the top of shell (2) respectively, and its exterior edge face is positioned on the same plane with the exterior edge face, bottom and the exterior edge face, top of shell (2) respectively; Accordingly, the exterior edge face of permanent-magnet type radial magnetic bearing A stator (12), permanent-magnet type radial magnetic bearing B stator (8) also is positioned on the same plane with the exterior edge face, bottom and the exterior edge face, top of shell (2) respectively.
CN2010202675723U 2010-07-22 2010-07-22 Five-degree-of-freedom full-suspension vertical axis wind driven generator with outer rotor structure Expired - Fee Related CN201730753U (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915214A (en) * 2010-07-22 2010-12-15 南京工业大学 Five-degree-of-freedom full-suspension vertical axis wind driven generator with outer rotor structure
CN102611360A (en) * 2012-03-08 2012-07-25 南京航空航天大学 Five-freedom-degree magnetic suspension motor with brake function and control method thereof
CN103244357A (en) * 2013-05-27 2013-08-14 南京工业大学 Magnetic suspension bearing disc type hybrid excitation doubly-salient wind driven generator
CN108980206A (en) * 2018-09-29 2018-12-11 王文学 Full permanent magnetism dynamic complete suspending bearing
CN109713869A (en) * 2018-06-06 2019-05-03 史智勇 A kind of heavy caliber annular magnetic suspension motor and control method

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101915214A (en) * 2010-07-22 2010-12-15 南京工业大学 Five-degree-of-freedom full-suspension vertical axis wind driven generator with outer rotor structure
CN102611360A (en) * 2012-03-08 2012-07-25 南京航空航天大学 Five-freedom-degree magnetic suspension motor with brake function and control method thereof
CN103244357A (en) * 2013-05-27 2013-08-14 南京工业大学 Magnetic suspension bearing disc type hybrid excitation doubly-salient wind driven generator
CN103244357B (en) * 2013-05-27 2014-12-24 南京工业大学 Magnetic suspension bearing disc type hybrid excitation doubly-salient wind driven generator
CN109713869A (en) * 2018-06-06 2019-05-03 史智勇 A kind of heavy caliber annular magnetic suspension motor and control method
CN108980206A (en) * 2018-09-29 2018-12-11 王文学 Full permanent magnetism dynamic complete suspending bearing

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Granted publication date: 20110202

Termination date: 20120722