WO2012119542A1 - Générateur synchrone, à aimants permanents, entraîné par le vent et doté d'un enroulement multicouche - Google Patents

Générateur synchrone, à aimants permanents, entraîné par le vent et doté d'un enroulement multicouche Download PDF

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Publication number
WO2012119542A1
WO2012119542A1 PCT/CN2012/071985 CN2012071985W WO2012119542A1 WO 2012119542 A1 WO2012119542 A1 WO 2012119542A1 CN 2012071985 W CN2012071985 W CN 2012071985W WO 2012119542 A1 WO2012119542 A1 WO 2012119542A1
Authority
WO
WIPO (PCT)
Prior art keywords
casing
rotor
generator
permanent magnet
magnet synchronous
Prior art date
Application number
PCT/CN2012/071985
Other languages
English (en)
Inventor
Qizhi Zhang
Xishan Yang
Ketao YU
Original Assignee
Shandong Swiss Electric Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shandong Swiss Electric Co., Ltd. filed Critical Shandong Swiss Electric Co., Ltd.
Publication of WO2012119542A1 publication Critical patent/WO2012119542A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/46—Fastening of windings on the stator or rotor structure
    • H02K3/48—Fastening of windings on the stator or rotor structure in slots
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H02K7/1838—Generators mounted in a nacelle or similar structure of a horizontal axis wind turbine
    • 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
    • Y02E10/72—Wind turbines with rotation axis in wind direction

Definitions

  • the present invention relates to a generator for wind-generation, in particular a permanent magnet synchronous wind generator with multi-layer winding.
  • the power of the generator used for the wind generator is increasing.
  • all the high power permanent magnet synchronous generators used for wind power generation adopt the structure of one-layer winding with a one-layer permanent magnet.
  • Such a structure may satisfy the demands for lifting and transportation, when the power is lower (e.g. ⁇ 3MW).
  • the volume and weight of the generators as well as the inner capacity of the engine also increase, which causes much inconvenience to the transportation and installation, such as that the cost is too high with the usage of a super huge transportation or lifting equipment, and an even larger generator may just not be able to be transported and installed, as even larger lifting equipments for installation cannot be found.
  • a separated structure is adopted in the large permanent magnet synchronous generator.
  • the technical problem to be solved by the present invention is to provide a compact- structured wind generator in view of the above deficiencies.
  • the generator sufficiently utilizes the free space inside the generator. Without increasing the overall volume of the generator, the rated power of the generator is increased which facilitates the resolution of on-land transportation issues for large-scale permanent magnet synchronous generator, with creating additional installation and commissioning difficulties.
  • the present invention provides a permanent magnet synchronous wind generator with multi-layer winding which includes the following structure: it contains a casing and an end cap, characterized in that at least two circles of ring-shaped stator cores are fixedly connected to the interior of the casing. A coil winding is arranged on each stator iron core.
  • a rotor axis is arranged in the casing which is rotatably coupled to the casing and dynamically coupled to a power device.
  • a rotor fixedly connected to the rotor axis is arranged between adjacent stator cores.
  • a plurality of permanent magnets uniformly distributed at intervals is connected to a surface of the rotors near to the coil windings.
  • the stator iron core is provided with the internal and external circles.
  • the present invention without increasing the overall volume of the existing wind generator, fully utilizes the remaining space inside the generator by arranging two or more circles of the stator iron cores,.
  • Each iron core is provided with coil winding and a rotor is provided between the adjacent stator iron cores. That is to say, each circle of the coil winding of the stator iron core can generate electricity such that the power of the generator is highly improved without changing the overall size of the generator.
  • the present invention has the advantages of compact structure, small volume, large power and convenience in transport and installation.
  • Figure 1 is a schematic diagram of an embodiment of the present invention
  • Figure 2 is a sectional view along the line A-A shown in figure 1 and after removing the coil winding;
  • Figure 3 is a schematic diagram of another embodiment
  • FIG. 4 is a schematic diagram of the third embodiment. Detailed Description of the Preferred Embodiments
  • a permanent magnet synchronous wind generator with multi-layer winding contains a casing 1 and an end cap 2.
  • Two circles of stator cores 3 are fixedly connected to and concentrically arranged in the interior of the casing 1.
  • the stator iron core 3 is ring-shaped in general, and each circle of the stator iron cores 3 is provided with coil winding 4.
  • the stator iron core 3 is composed of a casing of iron core 31 and a plurality of fins 32 arranged on the internal peripheral surface or the external peripheral surface of the casing of iron core 31 at intervals. The trend of the fin 32 is parallel to the radial direction of the casing of iron core 31. The benefit of this structure is that it is convenient for processing.
  • the fins 32 of the internally located stator iron core 3 are distributed on the inner peripheral surface of the iron core 31, whereas the fins 32 of the of the externally located stator iron 3 are distributed on the external peripheral surface of the iron core 31.
  • the gap between the adjacent fins 32 forms the winding slot 33 for containing the coil winding 4.
  • the method of mounting the coil winding 4 on the stator iron core 3 or the winding method is a prior art technology which will not be elaborated herewith.
  • Inside the casing 1 an inner support casing 8 and a core axis 9 are fixedly connected to the casing.
  • the core axis 9 is arranged inside the inner support casing 8 and is arranged concentrically to the inner support casing 8.
  • the externally located stator iron core 3 is embedded on the inner side wall of the casing, and the internally located stator iron core 3 is sleeved on the outer side wall of the inner support casing 8.
  • the core axis 9 is rotatably coupled to the axle housing i.e. the rotor axis 5 through the bearing 10, where the rotor axis 5 is dynamically coupled to the power unit of the wind generator.
  • One end of the rotor axis 5 extends out of the end casing 2 for dynamic coupling.
  • a cylindrical rotor 6 which is fixed to the rotor axis 5.
  • a plurality of permanent magnets 7 are evenly and fixedly connected with at intervals.
  • the rotor axis 5 of the wind generator is dynamically coupled to the power unit of the wind generator systems.
  • the power unit drives the rotor axis 5 to operate the rotation of the rotor 6 such that a rotary magnet field is created.
  • the coil winding 4 cuts the magnet line to create an alternating current.
  • the alternating currents created by the coil winding 4 on the two circles of the stator iron cores 3 are transmitted to two AC current converters respectively, which regulate the alternating currents to meet the requirements of the transmission grid on frequency and voltage.
  • the generators are then combined to the grid.
  • FIG. 3 is a cross- sectional illustration of the generator after removing the coil winding.
  • the generator in such structure is an improved one on the basis of the first embodiment, that is to say, a concentrically arranged outer support casing 11 is provided outside the inner support casing 8.
  • the outer support casing 11 is also fixedly connected to the casing 1 and the stator iron cores 3 with the coil windings are respectively connected to the outside wall of the inner support casing 8, the inside wall of the outer support casing 11 and the inside wall of the casing 1.
  • the rotor 6 fixedly connected to the rotor axis 5 is located between two stator iron cores 3 on the inner side, and a plurality of permanent magnets 7 are evenly and fixedly connected to the internal and external peripheral surfaces of the rotor 6 at intervals.
  • a cylindrical outer rotor 12 fixedly connected to the rotor axis 5.
  • a plurality of permanent magnets 7 are evenly and fixedly connected to the out peripheral surface of outer rotor 12 at intervals.
  • the alternating currents formed by the coil winding on the three circles of the stator iron cores 3 are distributed and transmitted to three converters, which regulates the alternating currents to meet the requirements of the transmission grid on frequency and voltage.
  • the generators are then combined to the grid.
  • FIG. 4 is a cross-sectional illustration of the generator removing the coil winding.
  • the generator in such structure is an improved one on the basis of the second embodiment, that is to say, a circle of the stator core 3 equipped with a coil winding is connected to the outer side wall of the outer support casing 11.
  • This stator iron core 3 is located inside the outer rotor 12.
  • a plurality of permanent magnets 7 are evenly and fixedly arranged on the internal peripheral surface of the outer rotor 12.
  • the generator in such structure has four circles of the stator iron cores 3.
  • the alternating currents formed by the coil winding on the three circles of the stator iron cores 3 are distributed and transmitted to four converters, which regulates the alternating currents to meet the requirements of the transmission grid on frequency and voltage.
  • the generators are then combined to the grid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)

Abstract

La présente invention se rapporte à un générateur synchrone, à aimants permanents, entraîné par le vent et doté d'un enroulement multicouche. Ledit générateur comprend un boîtier (1) et un embout (2). Au moins deux cercles de noyaux de stator de forme annulaire sont raccordés de façon fixe à l'intérieur du boîtier. Un enroulement de bobine (4) est agencé sur chaque noyau de stator. Un arbre de rotor (5) disposé dans le boîtier est couplé de manière rotative au boîtier et couplé de manière dynamique à un dispositif de puissance. Un rotor (6) raccordé de façon fixe à l'arbre de rotor est disposé entre des noyaux de stator adjacents. Une pluralité d'aimants permanents (7) répartis de façon uniforme selon des intervalles sont raccordés à la surface du rotor près des enroulements de bobine. Le générateur a l'avantage de présenter une structure compacte, un faible volume, une grande puissance et une facilité de transport et d'installation.
PCT/CN2012/071985 2011-03-10 2012-03-06 Générateur synchrone, à aimants permanents, entraîné par le vent et doté d'un enroulement multicouche WO2012119542A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201120061764.3 2011-03-10
CN2011200617643U CN201956848U (zh) 2011-03-10 2011-03-10 多层绕组永磁同步风力发电机

Publications (1)

Publication Number Publication Date
WO2012119542A1 true WO2012119542A1 (fr) 2012-09-13

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/071985 WO2012119542A1 (fr) 2011-03-10 2012-03-06 Générateur synchrone, à aimants permanents, entraîné par le vent et doté d'un enroulement multicouche

Country Status (2)

Country Link
CN (1) CN201956848U (fr)
WO (1) WO2012119542A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2736154A1 (fr) * 2012-11-21 2014-05-28 Siemens Aktiengesellschaft Générateur à aimants permanents de stator double pour une éolienne
WO2015007338A1 (fr) * 2013-07-19 2015-01-22 Abb Technology Ltd Ensemble de production d'énergie éolienne

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201956848U (zh) * 2011-03-10 2011-08-31 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机
CN102111045A (zh) * 2011-03-10 2011-06-29 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机
JP2015512241A (ja) * 2012-02-28 2015-04-23 シーメンス アクチエンゲゼルシヤフトＳｉｅｍｅｎｓ Ａｋｔｉｅｎｇｅｓｅｌｌｓｃｈａｆｔ 電気機械
DE102013113657A1 (de) * 2012-12-07 2014-06-12 Denso Corporation Rotierende elektrische Maschine in Mehrfach-Luftspalt-Ausführung
CN103296846A (zh) * 2013-07-02 2013-09-11 国电联合动力技术有限公司 一种固定轴支撑的大型直驱风力发电机
CN103715849B (zh) * 2013-12-18 2016-03-02 江苏大学 一种直驱式磁悬浮风力发电机
CN112653307A (zh) * 2019-10-10 2021-04-13 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） 双层直驱型风力发电机

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929263A (zh) * 2006-09-14 2007-03-14 湖南大学 复合式风力永磁同步发电机
CN101917101A (zh) * 2010-08-06 2010-12-15 国电联合动力技术有限公司 一种双定子直驱永磁风力发电机
CN102111045A (zh) * 2011-03-10 2011-06-29 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机
CN201956848U (zh) * 2011-03-10 2011-08-31 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1929263A (zh) * 2006-09-14 2007-03-14 湖南大学 复合式风力永磁同步发电机
CN101917101A (zh) * 2010-08-06 2010-12-15 国电联合动力技术有限公司 一种双定子直驱永磁风力发电机
CN102111045A (zh) * 2011-03-10 2011-06-29 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机
CN201956848U (zh) * 2011-03-10 2011-08-31 山东瑞其能电气有限公司 多层绕组永磁同步风力发电机

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2736154A1 (fr) * 2012-11-21 2014-05-28 Siemens Aktiengesellschaft Générateur à aimants permanents de stator double pour une éolienne
WO2015007338A1 (fr) * 2013-07-19 2015-01-22 Abb Technology Ltd Ensemble de production d'énergie éolienne

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