CN102182624A - Magnetic suspension horizontal shaft direct-driving type wind driven generator with five freedom degrees - Google Patents

Magnetic suspension horizontal shaft direct-driving type wind driven generator with five freedom degrees Download PDF

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Publication number
CN102182624A
CN102182624A CN2011100838246A CN201110083824A CN102182624A CN 102182624 A CN102182624 A CN 102182624A CN 2011100838246 A CN2011100838246 A CN 2011100838246A CN 201110083824 A CN201110083824 A CN 201110083824A CN 102182624 A CN102182624 A CN 102182624A
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CN
China
Prior art keywords
permanent
stator
magnetic suspension
rotor
bearing
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Pending
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CN2011100838246A
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Chinese (zh)
Inventor
张广明
梅磊
王德明
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Nanjing Tech University
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Nanjing Tech University
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Priority to CN2011100838246A priority Critical patent/CN102182624A/en
Publication of CN102182624A publication Critical patent/CN102182624A/en
Pending legal-status Critical Current

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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
    • Y02E10/72Wind turbines with rotation axis in wind direction

Abstract

A magnetic suspension horizontal shaft wind driven generator with five freedom degrees comprises a stator of a permanent magnet type radial magnetic suspension bearing A at the left end of a shell, a stator of a permanent magnet type radial magnetic suspension bearing B at the right end of the shell, and a stator of a permanent magnet deflection type axial magnetic suspension bearing and a generator stator which are arranged on the inner wall of the shell. A rotor of the permanent magnet type radial magnetic suspension bearing A, a generator rotor, a rotor B of the permanent magnet deflection type axial magnetic suspension bearing, a rotor A of the permanent magnet deflection type axial magnetic suspension bearing, and a rotor of the permanent magnet type radial magnetic suspension bearing B are arranged on a spindle. Two ends of the spindle extend out from two ends of the shell, and fan blades are arranged at one end of the spindle. In the generator, the suspension of the rotors on four radial freedom degrees is realized by the two permanent magnet type radial magnetic suspension bearings, and the suspension of the rotors on an axial freedom degree is realized by the permanent magnet deflection type axial magnetic suspension bearing, so that the full suspension of the rotors is realized, and the cut-in wind speed is reduced, thereby simplifying the structure of a magnetic suspension bearing system of a wind driven generator and enhancing the efficiency of power conversion.

Description

A kind of suspension of five-freedom degree magnetic horizontal axis direct-drive aerogenerator
Technical field
The present invention relates to a kind of horizontal axis direct-drive aerogenerator, specifically is a kind of suspension of five-freedom degree magnetic horizontal axis direct-drive aerogenerator, 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 * 10 9MW.Available wind energy is about 2 * 10 7MW 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 * 10 9KW, wherein, the land wind energy content is about 2.53 * 10 8KW(is liftoff 10m height), but the wind energy content of sea development and utilization is about 7.5 * 10 8KW.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.
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, sets up the difference of mode according to bias magnetic field, and active magnetic suspension bearing can be divided into two kinds on electromagnetism eccentrically arranged type and permanent magnet bias type.Permanent magnet bias type magnetic suspension bearing adopts permanent-magnet material to set up bias magnetic field, can reduce the power loss of magnetic suspension bearing largely.
In existing full permanent-magnet type magnetic suspending wind turbine generator, the rotor of wind-driven generator can't be realized whole suspensions of five degrees of freedom, therefore the mechanical friction between rotating part and the nonrotational part is not thoroughly eliminated in the blower fan, can't further reduce the incision wind speed.
If will realize the five degree of freedom of wind power generator rotor suspends, then the supporting system that is adopted with in the existence of active magnetic suspension bearing must be arranged, if adopt electromagnetism eccentrically arranged type magnetic suspension bearing, can bring bigger energy loss, in addition, if adopt active magnetic suspension bearing in a plurality of degrees of freedom, then can increase the scale of control system, cause the use of magnetic levitation bearing system and operating cost higher.
Summary of the invention
The objective of the invention is to propose the suspension of five-freedom degree magnetic horizontal axis direct-drive aerogenerator that a kind of maintenance cost is low, wind energy utilization is high, starting wind velocity is low.
The present invention includes shell, lay respectively at permanent-magnet type radial magnetic bearing A stator, the permanent-magnet type radial magnetic bearing B stator of shell left end and right-hand member, be installed in permanent magnet bias profile shaft on the outer casing inner wall to magnetic suspension bearing stator and generator unit stator, generator unit stator at permanent-magnet type radial magnetic bearing A stator and permanent magnet bias profile shaft between the magnetic suspension bearing stator; Main shaft be provided with permanent-magnet type radial magnetic bearing A rotor, generator amature, permanent magnet bias profile shaft to magnetic suspension bearing rotor B, permanent magnet bias profile shaft to magnetic suspension bearing rotor A, permanent-magnet type radial magnetic bearing B rotor; Permanent-magnet type radial magnetic bearing A rotor is positioned at permanent-magnet type radial magnetic bearing A stator, generator amature is positioned at generator unit stator, permanent-magnet type radial magnetic bearing B rotor is positioned at permanent-magnet type radial magnetic bearing B stator, the permanent magnet bias profile shaft to the magnetic suspension bearing stator the permanent magnet bias profile shaft to magnetic suspension bearing rotor A and permanent magnet bias profile shaft between magnetic suspension bearing rotor B; Stretch out from the left end and the right-hand member of shell respectively at the two ends of main shaft, and one end end is equipped with fan blade.
Between above-mentioned permanent-magnet type radial magnetic bearing A stator interior edge face and the permanent-magnet type radial magnetic bearing A rotor exterior edge face, between generator unit stator interior edge face and the generator amature exterior edge face, the permanent magnet bias profile shaft to magnetic suspension bearing stator left side and permanent magnet bias profile shaft between magnetic suspension bearing rotor B right side, the permanent magnet bias profile shaft to magnetic suspension bearing stator right side and permanent magnet bias profile shaft between magnetic suspension bearing rotor A left side, all there is air gap between permanent-magnet type radial magnetic bearing B stator interior edge face and the permanent-magnet type radial magnetic bearing B rotor exterior 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.
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 a permanent magnet bias profile shaft to realize the suspension of rotor in axial freedom to magnetic suspension bearing, 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 horizontal axis direct-drive aerogenerator, numerous advantages such as the present invention has the wind energy utilization height, the incision wind speed is low, noise is little, system architecture is simple and practical and operating cost is low have wide market application prospect.
Description of drawings
Fig. 1 is a kind of suspension of five-freedom degree magnetic horizontal axis direct-drive aerogenerator structural plan schematic representation.
Label title among Fig. 1: 1, permanent-magnet type radial magnetic bearing A stator.2, shell.3, generator unit stator.4, the permanent magnet bias profile shaft is to the magnetic suspension bearing stator.5, main shaft.6, permanent-magnet type radial magnetic bearing B stator.7, fan blade permanent-magnet type radial magnetic bearing B rotor.8, permanent-magnet type radial magnetic bearing B rotor.9, the permanent magnet bias profile shaft is to the magnetic suspension bearing rotor A.10, the permanent magnet bias profile shaft is to magnetic suspension bearing rotor B.11, generator amature.12, permanent-magnet type radial magnetic bearing A rotor.
Embodiment
As shown in Figure 1, permanent-magnet type radial magnetic bearing A stator 1, generator unit stator 3, permanent magnet bias profile shaft all are fixed on shell 2 inside to magnetic suspension bearing stator 4, permanent-magnet type radial magnetic bearing B stator 6, wherein, generator unit stator 3 at permanent-magnet type radial magnetic bearing A stator 1, permanent magnet bias profile shaft between magnetic suspension bearing rotor B10, the permanent magnet bias profile shaft to magnetic suspension bearing stator 4 the permanent magnet bias profile shaft to magnetic suspension bearing rotor B10, permanent magnet bias profile shaft between magnetic suspension bearing rotor A 9.
Permanent-magnet type radial magnetic bearing A rotor 12, generator amature 11, permanent magnet bias profile shaft all are sleeved on main shaft 5 outsides to magnetic suspension bearing rotor A 9, permanent magnet bias profile shaft to magnetic suspension bearing rotor B10, permanent-magnet type radial magnetic bearing B rotor 8, fan blade 7, and its interior edge face all contacts with the exterior edge face of main shaft 5.Wherein, permanent-magnet type radial magnetic bearing A rotor 12 is arranged in the axis hole that permanent-magnet type radial magnetic bearing A stator 1 interior edge face forms, and has small air gap between permanent-magnet type radial magnetic bearing A rotor 12 exterior edge faces and permanent-magnet type radial magnetic bearing A stator 1 interior edge face; Generator amature 11 is arranged in the axis hole that generator unit stator 3 interior edge faces form, and has small air gap between generator amature 11 exterior edge faces and generator unit stator 3 interior edge faces; The permanent magnet bias profile shaft lays respectively at the permanent magnet bias profile shaft to magnetic suspension bearing stator 4 both sides to magnetic suspension bearing rotor A 9, permanent magnet bias profile shaft to magnetic suspension bearing rotor B10, and there is small air gap to magnetic suspension bearing rotor A 9 left sides and permanent magnet bias profile shaft in the permanent magnet bias profile shaft between magnetic suspension bearing stator 4 right sides, and there is small air gap to magnetic suspension bearing rotor B10 right side and permanent magnet bias profile shaft in the permanent magnet bias profile shaft between magnetic suspension bearing stator 4 left sides; Permanent-magnet type radial magnetic bearing B rotor 8 is arranged in the axis hole that permanent-magnet type radial magnetic bearing B stator 6 interior edge faces form, and has small air gap between permanent-magnet type radial magnetic bearing B rotor 8 exterior edge faces and permanent-magnet type radial magnetic bearing B stator 6 interior edge faces; Fan blade 7 is installed on the low order end of main shaft 5.
The present invention utilizes the interaction between interaction, permanent-magnet type radial magnetic bearing B stator 6 and the permanent-magnet type radial magnetic bearing B rotor 8 between permanent-magnet type radial magnetic bearing A stator 1 and the permanent-magnet type radial magnetic bearing A rotor 12 to realize the driven suspension of rotor on four degrees of freedom radially, utilizes the permanent magnet bias profile shaft to realize the active suspension of rotor axial degrees of freedom to the interaction between magnetic suspension bearing rotor B10 of magnetic suspension bearing rotor A 9, permanent magnet bias profile shaft to magnetic suspension bearing stator 4 and permanent magnet bias profile shaft.
When adopting the present invention to utilize wind-power electricity generation, wind is to fan blade 7, and fan blade 7 drives main shaft 5 and rotates, and main shaft 5 drives and is sleeved on its outside generator amature 11 rotations, makes generator unit stator 3 send electric energy.

Claims (3)

1. suspension of five-freedom degree magnetic horizontal axis wind-driven generator, it is characterized in that: comprise shell (2), lay respectively at permanent-magnet type radial magnetic bearing A stator (1), the permanent-magnet type radial magnetic bearing B stator (6) of shell left end and right-hand member, be installed in permanent magnet bias profile shaft on shell (2) inwall to magnetic suspension bearing stator (4) and generator unit stator (3), generator unit stator (3) is positioned at permanent-magnet type radial magnetic bearing A stator (1) and permanent magnet bias profile shaft between magnetic suspension bearing stator (4); Main shaft (5) is provided with permanent-magnet type radial magnetic bearing A rotor (12), generator amature (11), permanent magnet bias profile shaft to magnetic suspension bearing rotor B(10), the permanent magnet bias profile shaft is to magnetic suspension bearing rotor A (9), permanent-magnet type radial magnetic bearing B rotor (8); Permanent-magnet type radial magnetic bearing A rotor (12) is positioned at permanent-magnet type radial magnetic bearing A stator (1), generator amature (11) is positioned at generator unit stator (3), permanent-magnet type radial magnetic bearing B rotor (8) is positioned at permanent-magnet type radial magnetic bearing B stator (6), the permanent magnet bias profile shaft to magnetic suspension bearing stator (4) be positioned at the permanent magnet bias profile shaft to magnetic suspension bearing rotor A (9) and permanent magnet bias profile shaft to magnetic suspension bearing rotor B(10) between; Stretch out from the left end and the right-hand member of shell respectively at the two ends of main shaft (5), and one end end is equipped with fan blade (7).
2. wind-driven generator as claimed in claim 1 is characterized in that: between permanent-magnet type radial magnetic bearing A stator (1) and permanent-magnet type radial magnetic bearing A rotor (12), between generator unit stator (3) and the generator amature (11), the permanent magnet bias profile shaft to magnetic suspension bearing stator (4) and permanent magnet bias profile shaft to magnetic suspension bearing rotor B(10) between, the permanent magnet bias profile shaft to magnetic suspension bearing stator (4) and permanent magnet bias profile shaft between magnetic suspension bearing rotor A (9), all leave air gap between permanent-magnet type radial magnetic bearing B stator (6) and the permanent-magnet type radial magnetic bearing B rotor (8).
3. generator as claimed in claim 2 is characterized in that: the width of described air gap is between 0.3 ~ 1.5mm.
CN2011100838246A 2011-04-02 2011-04-02 Magnetic suspension horizontal shaft direct-driving type wind driven generator with five freedom degrees Pending CN102182624A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011100838246A CN102182624A (en) 2011-04-02 2011-04-02 Magnetic suspension horizontal shaft direct-driving type wind driven generator with five freedom degrees

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011100838246A CN102182624A (en) 2011-04-02 2011-04-02 Magnetic suspension horizontal shaft direct-driving type wind driven generator with five freedom degrees

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CN102182624A true CN102182624A (en) 2011-09-14

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104768846A (en) * 2012-06-20 2015-07-08 那扎尔·默罕默德·哈桑 High altitude maglev vertical-axis wind turbine system (HAM-VAWT)
CN106762435A (en) * 2017-03-13 2017-05-31 珠海市光普太阳能科技有限公司 Rectilinear wind power generation unit
CN108005857A (en) * 2017-08-07 2018-05-08 陆继荣 The special culvert type of electric airplane, which is vortexed, balances wind-driven generator
CN110617182A (en) * 2019-10-08 2019-12-27 吴辉 Magnetic suspension wind generating set
CN112228279A (en) * 2019-06-30 2021-01-15 北京金风科创风电设备有限公司 Generator and wind generating set
CN113357091A (en) * 2021-07-06 2021-09-07 三一重能股份有限公司 Wind driven generator and wind driven generator control method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1948746A (en) * 2006-10-17 2007-04-18 刘骁 Vertical full magnetic suspension wind force power generator
US20100126374A1 (en) * 2008-11-23 2010-05-27 Qigen Ji Magnetostatic levitation and propulsion systems for moving objects
CN101806286A (en) * 2009-02-16 2010-08-18 卓向东 Full suspension type permanent magnetic suspension wind driven generator

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1948746A (en) * 2006-10-17 2007-04-18 刘骁 Vertical full magnetic suspension wind force power generator
US20100126374A1 (en) * 2008-11-23 2010-05-27 Qigen Ji Magnetostatic levitation and propulsion systems for moving objects
CN101806286A (en) * 2009-02-16 2010-08-18 卓向东 Full suspension type permanent magnetic suspension wind driven generator

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104768846A (en) * 2012-06-20 2015-07-08 那扎尔·默罕默德·哈桑 High altitude maglev vertical-axis wind turbine system (HAM-VAWT)
CN106762435A (en) * 2017-03-13 2017-05-31 珠海市光普太阳能科技有限公司 Rectilinear wind power generation unit
CN108005857A (en) * 2017-08-07 2018-05-08 陆继荣 The special culvert type of electric airplane, which is vortexed, balances wind-driven generator
CN112228279A (en) * 2019-06-30 2021-01-15 北京金风科创风电设备有限公司 Generator and wind generating set
CN112228279B (en) * 2019-06-30 2023-03-03 北京金风科创风电设备有限公司 Generator and wind generating set
CN110617182A (en) * 2019-10-08 2019-12-27 吴辉 Magnetic suspension wind generating set
CN110617182B (en) * 2019-10-08 2020-09-22 乐清市芮易经济信息咨询有限公司 Magnetic suspension wind generating set
CN112145364A (en) * 2019-10-08 2020-12-29 邵峥业 Magnetic suspension wind generating set
CN112145364B (en) * 2019-10-08 2022-04-08 江苏卓海电气装备有限公司 Magnetic suspension wind generating set
CN113357091A (en) * 2021-07-06 2021-09-07 三一重能股份有限公司 Wind driven generator and wind driven generator control method

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Application publication date: 20110914