CN1649239A - MW level direct drive permanent magnet external rotor synchronous generator - Google Patents

MW level direct drive permanent magnet external rotor synchronous generator Download PDF

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Publication number
CN1649239A
CN1649239A CNA2004100030893A CN200410003089A CN1649239A CN 1649239 A CN1649239 A CN 1649239A CN A2004100030893 A CNA2004100030893 A CN A2004100030893A CN 200410003089 A CN200410003089 A CN 200410003089A CN 1649239 A CN1649239 A CN 1649239A
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CN
China
Prior art keywords
permanent magnet
direct drive
stator
level direct
outer rotor
Prior art date
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Pending
Application number
CNA2004100030893A
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Chinese (zh)
Inventor
武钢
朱川江
马鸿兵
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Goldwind Science and Technology Co Ltd
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Xinjiang Goldwind Science and Technology Co Ltd
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Publication date
Application filed by Xinjiang Goldwind Science and Technology Co Ltd filed Critical Xinjiang Goldwind Science and Technology Co Ltd
Priority to CNA2004100030893A priority Critical patent/CN1649239A/en
Publication of CN1649239A publication Critical patent/CN1649239A/en
Pending legal-status Critical Current

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    • 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

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  • Motor Or Generator Cooling System (AREA)

Abstract

A MW level direct drive permanent magnetic outer rotor synchronous wind generator includes a fixed shaft, a rotary shaft, a coil winding, a magnetic steel, an iron core, a stator and an outer rotor, among which, the rotary shaft is mounted on the fixed shaft via a bearing, the stator is installed on the fixed shaft via its frame, the outer rotor is set on the rotary shaft via its frame, an axial cooling air channel is set between the winding coil and a stator support, a protection cover is set at the front face between the outer rotor and the stator.

Description

The MW level directly drives the permanent-magnetic outer rotor synchronous generator
Technical field
The present invention relates to a kind of MW level and directly drive the permanent-magnetic outer rotor synchronous generator, belong to technical field of wind power generation.
Background technology
Existing wind-driven generator mainly has asynchronous induction generator, electric excitation synchronous generator, magneto alternator.All there is different defectives in these three kinds of generators, and asynchronous induction generator will be from the electrical network absorbing reactive power, and it is excessive that power grade is not easy to do; The electricity excitation synchronous generator has excitation winding, need provide a cover independent field power supply, complex structure, and volume is bigger; Magneto alternator power is less.The rotating speed of these three kinds of generators is all very high, needs the supporting use of step-up gear; This will bring such as a series of problems such as lubricated, noise, maintenances; Preceding two types motor will be made the generator of equal high-power grade, and it is very big that its volume weight will reach, and is unfavorable for installing and transportation.
Summary of the invention
Task of the present invention is to provide a kind of slow-revving direct driving permanent-magnetic outer rotor synchronous generator of big capacity that overcomes above-mentioned deficiency, this generator comprises fixed axis, rotation axis, coil windings, permanent magnetic steel, iron core, stator and external rotor, wherein rotation axis by Bearing Installation on fixed axis, stator is installed on the fixed axis by stator support, and external rotor is installed on the rotation axis by rotor field spider.
Above-mentioned external rotor is the outermost protection body of generator (parts of stator wraps in inside, have only axle to stretch out from two ends), be again the matrix that permanent magnetic steel is installed, or the yoke of external rotor is formed the part of magnetic circuit.
Above-mentioned fixed axis can be hollow form.
Above-mentioned generator can be provided with axial cooling ventilation duct between winding coil and stator support; Windward side between external rotor and stator is provided with protective cover.
Above-mentioned rotor field spider is made up of transition support, air inlet duct, support disc, connector.
Each magnetic pole of above-mentioned generator is pieced together by the less permanent magnetic steel of polylith and is formed.
Above-mentioned generator, its capacity are more than 0.8MW, and outside dimension is between 2--6m, and rotating speed is below 40rpm.
The high capacity synchronous generator of the present invention program's design has adopted multipole outer-rotor structure, because number of poles is many, its rotating speed is very low, thereby does not need step-up gear supporting, can directly drive generating.Increase the reliability and the life-span of unit, reduced operation and maintenance cost.External rotor is the outermost protective casing of generator as casing, it is again the matrix that permanent magnetic steel is installed, on inner surface, mounted the permanent magnetism magnetic pole of forming by the less permanent magnetic steel of polylith, and the parts of stator are wrapped in inside, have only axle to stretch out from two ends, this structure has reduced the outside dimension of generator, only than motor gas-gap diameter big a little.Compare under identical power grade situation with outer-rotor structure, volume reduces greatly, and quality alleviates.Owing to utilized permanent magnetic steel preferably, effectively increased air gap flux density.Stator core is fastened on the stator support among the present invention, and stator support is fixed on the dead axle then, has groove, the inside to be packed with coil on the iron core and forms, and being has axial air duct on stator core and the stator support, and near the coil position, constitutes air cooling system.Motor does not have the cooling fan of carrying or adorns cooling system outward, reduces loss, and is simple in structure.Stator winding is sealed by air cooling system, thereby can not cause erosion to winding.Because rotor field spider adopts oblique reinforcement supporting construction, makes rotor supporting structure lie under the stator, thereby has shortened the axial dimension of generator greatly.And when improving support strength effective simplification structure.
Description of drawings
Fig. 1 is the structural representation of the embodiment of the invention;
Fig. 2 is the end view of embodiment of the invention rotor field spider;
Fig. 3 is the front view of embodiment of the invention rotor field spider.
With reference to Fig. 1; the generator external rotor is made up of casing (1), rotor field spider (2), rotation axis (3), permanent magnet (4), protective cover (5) in the embodiment of the invention; casing (1) is both as the outermost protection body of generator; be again the matrix that permanent magnet (4) is installed, or the yoke of external rotor is formed the part of magnetic circuit.Casing (1) is fastened on the rotor field spider (2), and rotor field spider (2) is being connected with rotation axis (3), and protective cover (5) is installed on the rotor field spider (2).Generator unit stator is made up of (6), coil (7) unshakable in one's determination, stator support (8), fixed axis (9), cooling air channel (11), and external rotor is connected with bearing (10) with rotation axis (3) by fixed axis (9) with stator.The protected cover of stator winding (7) (5) seal protection.With reference to Fig. 2, Fig. 3, in the embodiment of the invention, rotor field spider is made up of transition support (12), air inlet duct (13), support disc (14), connector (15).Rotor supports adopts one-sided oblique reinforcement supporting construction, has shortened the axial dimension of generator.

Claims (8)

1、一种MW级直接驱动永磁外转子风力发电机，包括固定轴、转动轴、线圈绕组、永磁磁钢、铁芯、定子和外转子，其特征在于：1. A MW level direct drive permanent magnet external rotor wind generator, comprising a fixed shaft, a rotating shaft, a coil winding, a permanent magnet, an iron core, a stator and an external rotor, characterized in that: (1)转动轴通过轴承安装于固定轴上；(1) The rotating shaft is installed on the fixed shaft through the bearing; (2)定子通过定子支架安装于固定轴上；(2) The stator is installed on the fixed shaft through the stator bracket; (3)外转子通过转子支架安装于转动轴上。(3) The outer rotor is mounted on the rotating shaft through the rotor bracket. 2、如权利要求1所述的MW级直接驱动永磁外转子风力发电机，其特征在于外转子既是发电机最外层的防护体，又是永磁磁钢安装的基体。2. The MW level direct drive permanent magnet outer rotor wind power generator as claimed in claim 1, characterized in that the outer rotor is not only the outermost protective body of the generator, but also the base for permanent magnet steel installation. 3、如权利要求1或2所述的MW级直接驱动永磁外转子风力发电机，其特征在于在绕组线圈和定子支架之间设有轴向的冷却通风道。3. The MW level direct drive permanent magnet outer rotor wind power generator according to claim 1 or 2, characterized in that an axial cooling ventilation channel is provided between the winding coil and the stator support. 4、如权利要求3所述的MW级直接驱动永磁外转子风力发电机，其特征在于固定轴呈中空状。4. The MW level direct drive permanent magnet outer rotor wind power generator as claimed in claim 3, characterized in that the fixed shaft is hollow. 5、如权利要求4所述的MW级直接驱动永磁外转子风力发电机，其特征在于转子支架由过渡支撑、进风道、支撑辐板、连接件组成。5. The MW level direct drive permanent magnet outer rotor wind power generator as claimed in claim 4, characterized in that the rotor bracket is composed of transition supports, air inlet ducts, support webs and connectors. 6、如权利要求5所述的MW级直接驱动永磁外转子风力发电机，其特征在于在外转子和定子之间的迎风面设有保护罩。6. The MW level direct drive permanent magnet outer rotor wind power generator as claimed in claim 5, characterized in that a protective cover is provided on the windward surface between the outer rotor and the stator. 7、如权利要求6所述的MW级直接驱动永磁外转子风力发电机，其特征在于每个磁极由多块较小的永磁磁钢拼贴组成。7. The MW level direct drive permanent magnet external rotor wind power generator as claimed in claim 6, characterized in that each magnetic pole is composed of a plurality of smaller permanent magnet steel collages. 8、如权利要求7所述的MW级直接驱动永磁外转子风力发电机，其特征在于发电机容量在0.8MW以上，外径尺寸在2-6m之间，转速在40rpm以下。8. The MW level direct drive permanent magnet external rotor wind power generator as claimed in claim 7, characterized in that the generator capacity is above 0.8MW, the outer diameter is between 2-6m, and the speed is below 40rpm.
CNA2004100030893A 2004-01-19 2004-01-19 MW level direct drive permanent magnet external rotor synchronous generator Pending CN1649239A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CNA2004100030893A CN1649239A (en) 2004-01-19 2004-01-19 MW level direct drive permanent magnet external rotor synchronous generator

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Application Number Priority Date Filing Date Title
CNA2004100030893A CN1649239A (en) 2004-01-19 2004-01-19 MW level direct drive permanent magnet external rotor synchronous generator

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CN1649239A true CN1649239A (en) 2005-08-03

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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100588083C (en) * 2007-12-28 2010-02-03 黄金伦 Wind wheel traction permanent magnetic motor
CN1976180B (en) * 2006-12-14 2010-05-26 天津市新源电气科技有限公司 Variable speed variable frequency pneumatic electric machine and excitation control system
CN101001036B (en) * 2006-12-15 2010-05-26 天津市新源电气科技有限公司 Variable-speed constant-frequency wind motor and excitation control system thereof
CN101793236A (en) * 2010-04-16 2010-08-04 湘电风能有限公司 Wind guide device of direct-drive wind power generator
CN101814793A (en) * 2010-04-16 2010-08-25 湘电风能有限公司 Natural air cooled and directly driven synchronizing windmill generator
CN101986532A (en) * 2010-11-16 2011-03-16 沈阳工业大学 1.5 and 2 megawatt-class middle-rotor low-speed permanent magnet synchronous wind generator
CN102121457A (en) * 2011-03-12 2011-07-13 华小平 Duplex bearing direct-drive wind generating set with bending moment independently bearing dead shaft
CN101714798B (en) * 2009-12-19 2011-09-07 山东鲁科风电设备有限公司 Megawatt direct-drive permanent-magnetism aerogenerator
CN102299579A (en) * 2011-09-07 2011-12-28 三一电气有限责任公司 Winding device, generator with winding device, and wind generating set
CN102377286A (en) * 2011-09-29 2012-03-14 江苏金风风电设备制造有限公司 Motor and cooling systeem thereof
WO2017148288A1 (en) * 2016-03-02 2017-09-08 新疆金风科技股份有限公司 Wind power generator system and fluid transportation device
CN107733114A (en) * 2017-09-26 2018-02-23 新疆金风科技股份有限公司 Rotor, motor and the wind power generating set of motor

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1976180B (en) * 2006-12-14 2010-05-26 天津市新源电气科技有限公司 Variable speed variable frequency pneumatic electric machine and excitation control system
CN101001036B (en) * 2006-12-15 2010-05-26 天津市新源电气科技有限公司 Variable-speed constant-frequency wind motor and excitation control system thereof
CN100588083C (en) * 2007-12-28 2010-02-03 黄金伦 Wind wheel traction permanent magnetic motor
CN101714798B (en) * 2009-12-19 2011-09-07 山东鲁科风电设备有限公司 Megawatt direct-drive permanent-magnetism aerogenerator
CN101814793B (en) * 2010-04-16 2012-04-18 湘电风能有限公司 A natural air-cooled direct-drive synchronous wind generator
CN101793236A (en) * 2010-04-16 2010-08-04 湘电风能有限公司 Wind guide device of direct-drive wind power generator
CN101814793A (en) * 2010-04-16 2010-08-25 湘电风能有限公司 Natural air cooled and directly driven synchronizing windmill generator
CN101793236B (en) * 2010-04-16 2012-09-05 湘电风能有限公司 Wind guide device of direct-drive wind power generator
CN101986532A (en) * 2010-11-16 2011-03-16 沈阳工业大学 1.5 and 2 megawatt-class middle-rotor low-speed permanent magnet synchronous wind generator
CN102121457A (en) * 2011-03-12 2011-07-13 华小平 Duplex bearing direct-drive wind generating set with bending moment independently bearing dead shaft
CN102299579A (en) * 2011-09-07 2011-12-28 三一电气有限责任公司 Winding device, generator with winding device, and wind generating set
CN102377286A (en) * 2011-09-29 2012-03-14 江苏金风风电设备制造有限公司 Motor and cooling systeem thereof
WO2017148288A1 (en) * 2016-03-02 2017-09-08 新疆金风科技股份有限公司 Wind power generator system and fluid transportation device
US10359028B2 (en) 2016-03-02 2019-07-23 Xinjiang Goldwind Science & Technology Co., Ltd. Air-cooled wind power generator system and fluid cooling device
CN107733114A (en) * 2017-09-26 2018-02-23 新疆金风科技股份有限公司 Rotor, motor and the wind power generating set of motor

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