WO2009111910A1 - Éolienne à suspension magnétique qui a un arbre vertical - Google Patents

Éolienne à suspension magnétique qui a un arbre vertical Download PDF

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Publication number
WO2009111910A1
WO2009111910A1 PCT/CN2008/000909 CN2008000909W WO2009111910A1 WO 2009111910 A1 WO2009111910 A1 WO 2009111910A1 CN 2008000909 W CN2008000909 W CN 2008000909W WO 2009111910 A1 WO2009111910 A1 WO 2009111910A1
Authority
WO
WIPO (PCT)
Prior art keywords
vertical axis
magnetic
permanent magnet
plate
fixed
Prior art date
Application number
PCT/CN2008/000909
Other languages
English (en)
Chinese (zh)
Inventor
王誉燕
杨臣机
Original Assignee
Wang Yuyen
Yang Chenchi
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 Wang Yuyen, Yang Chenchi filed Critical Wang Yuyen
Publication of WO2009111910A1 publication Critical patent/WO2009111910A1/fr

Links

Classifications

    • 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
    • H02K7/08—Structural association with bearings
    • H02K7/09—Structural association with bearings with magnetic bearings
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C32/00—Bearings not otherwise provided for
    • F16C32/04—Bearings not otherwise provided for using magnetic or electric supporting means
    • F16C32/0406—Magnetic bearings
    • F16C32/0408—Passive magnetic bearings
    • F16C32/041—Passive magnetic bearings with permanent magnets on one part attracting the other part
    • F16C32/0417—Passive magnetic bearings with permanent magnets on one part attracting the other part for axial load mainly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C39/00—Relieving load on bearings
    • F16C39/06—Relieving load on bearings using magnetic means
    • F16C39/063—Permanent magnets
    • 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
    • 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
    • F05B2280/50—Intrinsic material properties or characteristics
    • F05B2280/5008—Magnetic properties
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2360/00—Engines or pumps
    • F16C2360/31—Wind motors
    • 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
    • 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 vertical axis windmill, and more particularly to a magnetically suspended vertical axis windmill.
  • Chinese Patent No. 200580010406. 7 discloses a cantilever vertical axis windmill which generates less repetitive load on the rotating shaft, has high vibration stability and low noise, and includes an outer wheel that generates rotational torque by wind.
  • Chinese Patent No. 200620078636. 9 also discloses a vertical axis windmill comprising a base, a main shaft and blades vertically disposed on the base. At the upper and lower ends of the main shaft, a plurality of blade support plates are horizontally disposed, and the upper and lower blade support plates are opposite to each other, and the blade support plate is provided with a positioning tip bolt, and the end of the blade support plate is provided with a support connecting rod; The blade is rotatably connected to the positioning tip bolt through a top hole provided at an upper and lower end thereof.
  • the vertical axis windmill has a small wind speed, flexible rotation and convenient blade replacement.
  • the prior art vertical axis windmill includes a windmill body and a generator.
  • the windmill body is mounted on the load bearing flange of the generator, and the generator includes a casing, a vertical shaft, a bearing, a permanent magnet rotor, and a disk stator iron.
  • the casing is composed of upper and lower support plates arranged up and down, and a surrounding plate between the upper and lower support plates
  • the vertical shaft is pivotally connected to the upper and lower support plates via bearings
  • the disk stator core Installed in the casing, the upper end of the vertical shaft has a bearing flange, and the bearing flange receives the gravity of the windmill body.
  • this vertical axis windmill has problems: the windmill body at the upper end of the vertical shaft has a certain weight, so that
  • the bearing is subjected to a large axial force, which increases the wear of the glaze bearing and shortens the service life of the bearing. At the same time, the efficiency of the mechanism is reduced due to the increased frictional force of the bearing, which depletes mechanical energy.
  • a magnetic suspension vertical axis windmill comprising a windmill body and a generator, the windmill body being mounted on a load bearing flange of the generator;
  • the generator comprising a casing, a vertical shaft, a bearing, a radial permanent magnet rotor, a radial stator core and a winding
  • the casing includes upper and lower support plates arranged up and down, and a coaming plate between the upper and lower support plates
  • the vertical shaft is pivotally connected to the upper and lower by bearings
  • the radial permanent magnet rotor comprises a magnetic conductive steel cylinder and a magnetic steel
  • the radial stator core is fixedly coupled with the casing, the radial permanent magnet rot
  • a specific magnetic levitation device may comprise a bottom case, a permanent magnet and a magnetic chuck disposed outside the generator, wherein the bottom case comprises a bottom plate and a circumferential plate, and the upper end of the circumferential plate is fixedly coupled with the lower support plate, and the circumference The lower end of the plate is fixedly coupled to the bottom plate; the vertical shaft protrudes from the bottom case and is pivotally connected to the bottom plate of the bottom case; the permanent magnet is fixed on the vertical axis in the bottom case, The magnetic chuck is fixed on the lower support plate in the bottom case, or the permanent magnet is fixed on the lower support plate in the bottom case, and the magnetic chuck is fixed on the vertical axis in the bottom case. The mutual attraction of the permanent magnet and the magnetic chuck creates an upward magnetic levitation force.
  • a gap may be disposed between the permanent magnet and the magnetic chuck; the permanent magnet may be fixed on a vertical axis in the bottom case by a connecting mechanism or a supporting mechanism.
  • the support mechanism can be a support plate that is secured to a vertical axis within the bottom housing, and the permanent magnets are secured to the vertical axis within the bottom housing by being secured to the support plate.
  • the permanent magnet may be a one-piece magnet or may be composed of two or more sub-magnets. If the permanent magnet is composed of more than two sub-magnets, the adjacent sub-magnets may have the same magnetic polarity at the surface, or vice versa; preferably, adjacent sub-magnets are in opposite polarity on the surface. Arrange.
  • a magnetic suspension vertical axis windmill comprising a windmill body and a generator, the windmill body being mounted on a load bearing flange of the generator, the generator comprising a casing, a vertical axis, a bearing, a permanent magnet rotor, a disc stator core and a winding; wherein, the casing comprises upper and lower support plates arranged up and down and a coaming plate between the upper and lower support plates; the permanent magnet rotor comprises a magnetically conductive steel plate And the magnetic steel, the magnetic conductive steel disc is fixed on the vertical shaft; the casing is mounted on the support seat of the vertical pole of the magnetic suspension vertical axis windmill; the vertical shaft is pivotally connected to the upper and lower support plates through the bearing; the disc stator core Install
  • the magnetic levitation force is generated by mutual attraction between the magnetic steel and the disc stator core.
  • the disc stator core may have two, one disc stator core is fixed on the upper support plate, the other disc stator core is fixed on the lower support plate, and the two disc stator cores are There is a gap between them, and the magnet of the permanent magnet rotor can be located in the gap between the two disc stator cores.
  • the above-mentioned windmill is further provided with a dedicated magnetic levitation device, and the form of such a dedicated magnetic levitation device can be various.
  • a dedicated magnetic levitation device may be further disposed inside the generator, the magnetic levitation device comprising a permanent magnet and a magnetic chuck, wherein the magnetic chuck is mounted on the upper support plate in the disc stator core, and the permanent magnet is mounted on the guide On the magnet steel plate, and placed opposite the magnetic chuck.
  • a permanent magnet may be a monolithic magnet or may be composed of two or more sub-magnets. If the permanent magnet is composed of more than two sub-magnets, the adjacent sub-magnets may have the same magnetic polarity at the surface, or vice versa; preferably, adjacent sub-magnets are in opposite polarity on the surface. Arrange.
  • a special magnetic levitation device may be further disposed on the outside of the generator, the magnetic levitation device comprising a bottom case, a permanent magnet and a magnetic chuck; wherein the bottom case comprises a bottom plate and a circumferential plate, and the upper end and the lower support plate of the circumferential plate Fixedly coupled, the lower end of the circumferential plate is fixedly coupled to the bottom plate; the permanent magnet is fixed on the vertical shaft in the bottom case or the lower support plate in the bottom case, and correspondingly, the magnetic chuck is fixed on the lower support plate in the bottom case Or on the vertical axis inside the bottom case.
  • the permanent magnet may be a monolithic magnet or may be composed of two or more sub-magnets. If the permanent magnet is composed of more than two sub-magnets, the adjacent sub-magnets may have the same magnetic polarity at the surface, or vice versa; preferably, adjacent sub-magnets are in opposite polarity on the surface. Arrange.
  • a gap is provided between the permanent magnet and the magnetic chuck.
  • the permanent magnets are fixed to the vertical axis in the bottom casing by a connecting mechanism or a supporting mechanism.
  • the support mechanism may be a support plate that is fixed to a vertical axis within the bottom case, and the permanent magnets are fixed to the vertical axis in the bottom case by being fixed to the support plate.
  • the magnetic suspension vertical axis windmill of the invention utilizes the magnet of the disc stator core and the permanent magnet rotor, and/or the magnetic chuck and the permanent magnet to generate magnetic levitation force, overcomes the axial force of the bearing, and reduces the bearing. The wear and tear increases the mechanical efficiency. The invention is further described below in conjunction with the drawings.
  • Figure 1 is a cross-sectional view showing a first embodiment of the present invention.
  • Figure 2 is a cross-sectional view showing a second embodiment of the present invention.
  • Figure 3 is a cross-sectional view showing a third embodiment of the present invention.
  • Figure 4 is a cross-sectional view showing a fourth embodiment of the present invention. detailed description
  • Figure 1 shows a magnetically suspended vertical axis windmill comprising a windmill body (not shown), a generator.
  • the generator includes a casing 1, a vertical shaft 2, a bearing 3, a permanent magnet rotor, a disc stator core 7, and a winding.
  • the upper and lower support plates 11, 12 of the casing 1 are arranged up and down, and the upper and lower supports are located
  • the surrounding plate 13 between the strut plates 11 and 12 is formed;
  • the permanent magnet rotor is composed of a magnetic conductive steel plate 4 and a magnetic steel 5, and the magnetic conductive steel plate 4 is fixed on the vertical shaft 2;
  • the casing 1 is mounted on the support of the windmill pole On the seat 15, the vertical shaft 2 is pivotally connected to the upper and lower support plates 11, 12 through the bearing 3;
  • the disc stator core 7 is mounted in the casing 1, and the upper end of the disc stator core 7 is fixed to the upper support plate 11
  • the utility model further comprises a magnetic conductive steel disk 4, the magnetic conductive steel plate 4 is fixedly coupled with the vertical shaft 2, the magnetic steel plate 5 is fixed on the magnetic conductive steel plate 4, and the magnetic steel 5 corresponds to the lower end of the disk stator core 7, the permanent magnet There is a gap between the magnet steel 5 of the rotor and the lower end surface of the disc stat
  • the solution shown in Fig. 2 is a modification based on the embodiment 1.
  • the inside of the generator further includes a permanent magnet composed of magnets 61, 62 and a magnetic chuck 8, wherein the magnetic poles of the magnets 61, 62 are opposite in polarity at the upper surface; the magnetic chuck 8 is mounted on the disc stator core 7
  • a permanent magnet is mounted on the magnetic conductive steel disk 4 of the permanent magnet rotor and disposed opposite to the magnetic chuck 8.
  • the magnetic chuck 8 is made of a silicon steel sheet or is made of other magnetically permeable material.
  • the disk stator core 7 has two, and a disk stator core 7 is fixed to the upper support plate. 11 on, Another disc stator core 7 is fixed on the lower support plate 12, and there is a gap between the two disc stator cores 7, and the magnetic steel 5 of the permanent magnet rotor is located in the gap between the two disc stator cores 7;
  • a bottom case 9 a permanent magnet composed of magnets 61, 62, and a magnetic chuck 8, wherein the magnets 61, 62 have opposite polarities at the upper surface;
  • the bottom case 9 includes a bottom plate 91 and a circumference To the plate 92, the upper end of the circumferential plate 92 is fixedly coupled to the lower support plate 12, and the lower end is fixedly coupled to the bottom plate 91; the upper end of the magnetic chuck 8 is fixed to the lower support plate 12 in the bottom case 9; a support plate is disposed in the bottom case 9 10,
  • Figure 4 shows another structure of a magnetically suspended vertical axis windmill comprising a casing 1, a vertical shaft 2, a bearing 3, a radial permanent magnet rotor - a radial stator core 71 and windings.
  • the radial permanent magnet rotor is composed of a magnetic conductive steel cylinder 41 and a magnetic steel 5; the upper and lower support plates 11, 12 of the casing 1 are arranged up and down, and a siding 13 between the upper and lower support plates 11, 12
  • the vertical shaft 2 is pivotally connected to the upper and lower support plates 11 and 12 through the bearing 3; the radial stator core 71 is fixedly coupled with the casing 1 , that is, fixedly coupled with the enclosure 13 of the casing 1;
  • the rotor is located in the radial stator core 71, and the magnetic steel 5 is mounted on the magnetic conductive steel cylinder 41, and the magnetic conductive steel cylinder 41 is fixedly coupled to the vertical shaft 2.
  • a bottom case 9 a permanent magnet composed of magnets 61, 62, a magnetic chuck 8 and a support disk 10, wherein the magnetic poles of the magnets 61, 62 at the upper surface are opposite in polarity;
  • the bottom case 9 includes The bottom plate 91 and the circumferential plate 92, the upper end of the circumferential plate 92 is fixedly coupled with the lower support plate 12, and the lower end is fixedly coupled with the bottom plate 91;
  • the magnetic chuck 8 is fixed on the lower support plate 12 in the bottom case 1;
  • the support plate 10 is fixed at the bottom Inside the casing 9, the lower part of the vertical shaft 1, the vertical shaft 2 protrudes from the bottom casing 9, and is pivotally connected to the bottom plate 91 of the bottom casing 9, and the permanent magnet is fixed on the support plate 10.

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

Abstract

La présente invention concerne une éolienne à suspension magnétique qui a un arbre vertical, un corps d'éolienne et un générateur. Le corps d'éolienne est monté sur une bride porteuse. Le générateur comprend un boîtier (1), l'arbre vertical (2), un palier (3), un rotor à magnétisme permanent, un noyau de stator en forme de disque (7) et un enroulement. Le boîtier (1) est formé par des plaques d'appui supérieure et inférieure (11, 12), et une plaque circonférentielle (13) qui se situe entre les plaques d'appui supérieure et inférieure. L'extrémité supérieure du noyau de stator en forme de disque (7) est fixée sur la plaque d'appui supérieure (11). L'acier magnétique (5) du rotor à magnétisme permanent est opposé à l'extrémité inférieure du noyau du stator en forme de disque (7) et un dégagement est prévu entre eux. Avec la structure ci-dessus, en utilisant l'attraction entre le noyau du stator en forme de disque (7) et l'acier magnétique (5) du rotor à magnétisme permanent, la force axiale du palier peut être surmontée, l'abrasion du palier peut être réduite et la durée de vie du palier peut être prolongée. Dans le même temps, la force de friction du palier peut être réduite et l'efficacité mécanique peut être améliorée.
PCT/CN2008/000909 2008-03-13 2008-05-08 Éolienne à suspension magnétique qui a un arbre vertical WO2009111910A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNA2008100267801A CN101252301A (zh) 2008-03-13 2008-03-13 磁悬浮垂直轴风车
CN200810026780.1 2008-03-13

Publications (1)

Publication Number Publication Date
WO2009111910A1 true WO2009111910A1 (fr) 2009-09-17

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ID=39955524

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2008/000909 WO2009111910A1 (fr) 2008-03-13 2008-05-08 Éolienne à suspension magnétique qui a un arbre vertical

Country Status (2)

Country Link
CN (1) CN101252301A (fr)
WO (1) WO2009111910A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499219A (en) * 2012-02-08 2013-08-14 Nenuphar Vertical axis wind turbine with roof generator
CN103795298A (zh) * 2014-01-21 2014-05-14 河海大学 一种水轮发电机组转子部分电永磁磁力减载装置
CN108317045A (zh) * 2018-03-22 2018-07-24 许占欣 一种具有气隙调节功能的磁悬浮风力发电机

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101260863A (zh) * 2008-04-14 2008-09-10 王誉燕 一种主翼随风向变动转角的风车叶片
WO2011094914A1 (fr) * 2010-02-08 2011-08-11 国能风力发电有限公司 Dispositif de support par suspension magnétique pour éolienne à arbre vertical
CN101807839B (zh) * 2010-04-22 2011-11-09 福建福安闽东亚南电机有限公司 永磁盘式无铁心微风启动风力发电机
CN102005830B (zh) * 2010-11-18 2012-07-04 车晋绥 转盘永磁发电机
CN108900057B (zh) * 2018-08-31 2022-03-11 沈阳工业大学 一种定子齿外侧连线正多边形的轴向磁通永磁电机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443043A (en) * 1981-09-09 1984-04-17 Tokyo Shibaura Denki Kabushiki Kaisha Electric motor unit
US5493161A (en) * 1990-04-27 1996-02-20 Hitachi, Ltd. Sealed magnetic fluid bearing for polygon mirror drive motor
CN1315773A (zh) * 2000-03-27 2001-10-03 三星电机株式会社 扫描电机
JP2004301087A (ja) * 2003-03-31 2004-10-28 Ebara Corp 垂直軸風車装置
CN2836318Y (zh) * 2005-11-02 2006-11-08 罗卫城 磁悬浮风力发电机
CN1905331A (zh) * 2006-08-04 2007-01-31 林修鹏 一种盘式风力发电机

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4443043A (en) * 1981-09-09 1984-04-17 Tokyo Shibaura Denki Kabushiki Kaisha Electric motor unit
US5493161A (en) * 1990-04-27 1996-02-20 Hitachi, Ltd. Sealed magnetic fluid bearing for polygon mirror drive motor
CN1315773A (zh) * 2000-03-27 2001-10-03 三星电机株式会社 扫描电机
JP2004301087A (ja) * 2003-03-31 2004-10-28 Ebara Corp 垂直軸風車装置
CN2836318Y (zh) * 2005-11-02 2006-11-08 罗卫城 磁悬浮风力发电机
CN1905331A (zh) * 2006-08-04 2007-01-31 林修鹏 一种盘式风力发电机

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2499219A (en) * 2012-02-08 2013-08-14 Nenuphar Vertical axis wind turbine with roof generator
CN103795298A (zh) * 2014-01-21 2014-05-14 河海大学 一种水轮发电机组转子部分电永磁磁力减载装置
CN103795298B (zh) * 2014-01-21 2016-03-23 河海大学 一种水轮发电机组转子部分电永磁磁力减载装置
CN108317045A (zh) * 2018-03-22 2018-07-24 许占欣 一种具有气隙调节功能的磁悬浮风力发电机

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