CN102630362A - A rotor segment for a rotor of a permanent magnet electrical machine - Google Patents

A rotor segment for a rotor of a permanent magnet electrical machine Download PDF

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Publication number
CN102630362A
CN102630362A CN2010800537488A CN201080053748A CN102630362A CN 102630362 A CN102630362 A CN 102630362A CN 2010800537488 A CN2010800537488 A CN 2010800537488A CN 201080053748 A CN201080053748 A CN 201080053748A CN 102630362 A CN102630362 A CN 102630362A
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Prior art keywords
rotor
sector
magneto
stator
magnetic pole
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CN102630362B (en
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帕努·库罗宁
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Switch Drive Systems Oy
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Switch Drive Systems Oy
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    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • 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
    • H02K1/22—Rotating parts of the magnetic circuit
    • H02K1/27—Rotor cores with permanent magnets
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • 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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
    • H02K2201/15—Sectional machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • 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

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

Magnetic poles of a permanent magnet rotor composed of rotor segments (101-04) are positioned in a manner that a tangential interval between magnetic axes (114, 116) of adjacent magnetic poles belonging to neighboring rotor segments (101, 104) is greater than an average of tangential intervals between magnetic axes (114, 117) of adjacent magnetic poles belonging to a same rotor segment (101). Therefore, the tangential distance from the flanks (107, 108) of the segments to closest permanent magnets can be increased and more room can be provided for arrangements (121, 122) for fastening the rotor segments together. The above-described positioning of the magnetic poles decreases the magnetic coupling between the permanent magnet rotor and the stator windings but, on the other hand, cogging may torque also be decreased.

Description

The rotor sector that is used for the rotor of magneto
Technical field
Present invention relates in general to electric rotating machine.More specifically, the present invention relates to be used for the rotor sector of the rotor of magneto, and the present invention relates to magneto.
Background technology
Major diameter motor, for example air-gap diameter even can comprise sectionalized stator and/or segmentation rotor in many cases greater than the direct driving wind-driven generator of 2000mm.In typical case, rotor sector and/or stator sector are in the three unities manufacturing and be transported to another place, at this another place, place said sector are assembled into motor.The rotor sector of magneto typically comprises supporting construction and the permanent magnet that is attached to this supporting construction.Permanent magnet is arranged on the air gap surface of rotor sector, magnetic pole is provided.Said air gap surface is when the rotor sector is used as magneto a part of, towards the surface of the rotor sector of the stator of magneto.One of challenge of the p-m rotor of the rotor sector of assembling the above-mentioned type relates to the adjacent rotors sector is tightened together.Near the permanent magnet of sensitive for damages, carrying out the fastening fact has limited and fastening relevant apparatus and method.The another one challenge relates to the transportation of rotor sector, and this is because combine to have the structure of surface-mount type permanent magnet especially, and the permanent magnet near the side of rotor sector during transportation possibly be damaged easily.
Summary of the invention
According to a first aspect of the invention, a kind of novel permanent magnetic motor is provided.In magneto according to the present invention; The magnetic pole that includes the p-m rotor of rotor sector is located as follows, that is: at the mean value of the tangential spacing between the magnetic axis of the adjacent pole that belongs to the adjacent rotor sector greater than the tangential spacing between the magnetic axis of the adjacent pole that is belonging to same rotor sector.Therefore, can increase from the side of rotor sector, therefore can with the layout that the rotor sector tightens together more spaces be provided for being used for to the tangential distance of immediate permanent magnet.In addition, combine to have the structure of surface-mount type permanent magnet especially, because the said side of permanent magnet distance is farther, so reduced vulnerability during transportation.The above-mentioned location of magnetic pole has reduced the magnetic coupling between the stator winding of permanent magnet and magneto, still, on the other hand, also can reduce cogging torque.
A kind of rotor sector of the novel rotor that is used for magneto is provided according to a second aspect of the invention.First side and the central angle between second side
Figure BDA00001690745400021
maximum according to rotor sector of the present invention are the π radians; Promptly 180 °, and the said rotor sector permanent magnet that comprises supporting construction and be attached to said supporting construction.This permanent magnet is arranged on the air gap surface of rotor sector, magnetic pole is provided, and when this rotor sector was used as magneto a part of, said air gap surface was towards the stator of magneto.Said magnetic pole is positioned on the said air gap surface, makes:
Figure BDA00001690745400022
and
Figure BDA00001690745400023
Wherein:
α 1Be in first side of rotor sector with near the central angle between the magnetic axis of the magnetic pole of said first side,
α 2Be in second side of rotor sector with near the central angle between the magnetic axis of the magnetic pole of said second side,
P is the number of the magnetic pole of rotor sector,
R AgBe the air gap radius of rotor sector, and
B 1And B 2Be tangential length, said tangential length is selected such that when the rotor sector is used as magneto a part of, obtain the enough tangential spacings between the permanent magnet of adjacent rotor sector.Be fit to B 1And B 2Numerical value in concrete condition, depend on the mechanical realization and the size of rotor sector and/or depend on the geometry of stator winding.In actual conditions, 5mm is B 1And B 2Lower limit.Item B 1/ R AgWith item B 2/ R AgShown that radian is the general rule of arc length divided by radius.
A plurality of example embodiment of the present invention has been described in appended dependent claims.
When combining advantages, with understanding various example embodiment and other purpose of the present invention and the advantage about structure and method of operation of the present invention best for the following explanation of concrete example embodiment.
In this article, verb " comprises " that it neither repels, also do not require the existence of the characteristic of not enumerating as open qualification.Only if other explicit state, the characteristic of enumerating in the dependent claims is independent assortment each other.
Description of drawings
Explain example embodiment of the present invention and their advantage with reference to the accompanying drawings and by way of example in more detail, in the accompanying drawings:
Fig. 1 shows the cross section of magneto according to an embodiment of the invention, and
Fig. 2 shows the cross section of magneto according to another embodiment of the invention.
Embodiment
Fig. 1 shows the cross section of magneto according to an embodiment of the invention.At the magneto shown in Fig. 1 is external rotor electric machine, and in this external rotor electric machine, rotor is arranged to around stator.This stator comprises the sectionalized stator iron core that is assembled into by stator sector 125,126,127 and 128.Stator winding preferably but optionally be arranged in such a way, that is: each coil of stator winding occupies the only stator slot of a sector that belongs to stator core.In this case, the stator sector can twine separated from one anotherly, and the terminal of the winding of only different stator sectors must couple together with suitable manner behind the assembling stator core.According to one embodiment of present invention, the rotor at the magneto shown in Fig. 1 comprises four rotor sectors 101,102,103 and 104.Said rotor sector 101-104 is similar each other, therefore, only explains rotor sector 101 hereinafter in more detail.In Fig. 1, angle
Figure BDA00001690745400031
is illustrated in the central angle between second side 108 of first side 107 and rotor sector 101 of rotor sector 101.Because four similar rotor sectors are arranged; So central angle
Figure BDA00001690745400032
is the pi/2 radian, promptly 90 °.Yet, it should be noted that structure and size according to motor, rotor and stator can be by segmentation to have the sector of any suitable number.For example, in some situation, rotor can comprise only two rotor sectors; In this situation; Central angle
Figure BDA00001690745400033
will be the π radian, promptly 180 °, and; At some in other the situation, rotor can comprise three sectors or more than four sector.
Rotor sector 101 comprises supporting construction 109, and said supporting construction 109 can comprise lamination ferromagnetic material and/or solid ferromagnetic material.Rotor sector 101 comprises the permanent magnet 110,111,112 and 113 that is attached to supporting construction 109.In the situation shown in Fig. 1, said permanent magnet is installed on the surface of supporting construction 109.Yet, also can make supporting construction have the recess that is used for said permanent magnet.Permanent magnet is arranged on the air gap surface of rotor sector, magnetic pole is provided.Draw the direction of magnetization of each permanent magnet of arrow indication on the element of representing permanent magnet in the drawings.Said magnetic pole is positioned with so a kind of mode, that is: at the mean value of the tangential spacing between the magnetic axis of the adjacent pole that belongs to the adjacent rotor sector greater than the tangential spacing between the magnetic axis of the adjacent pole that is belonging to same rotor sector.In Fig. 1, central angle γ 1Corresponding to the tangential spacing between the magnetic axis 114 and 116 of the adjacent pole that belongs to adjacent rotor sector 101 and 104 respectively.Correspondingly, central angle γ 2Corresponding to the tangential spacing between the magnetic axis 115 and 120 of the adjacent pole that belongs to adjacent rotor sector 101 and 102 respectively.Because rotor sector 101-104 is similar each other, so γ 1Equal γ 2Central angle β 1, β 2And β 3Corresponding to the tangential spacing between the magnetic axis of the adjacent pole that belongs to rotor sector 101.Accomplish through the appropriate location of permanent magnet 110-113 the location of magnetic pole.Have in use under the situation of supporting construction of the recess that is used for permanent magnet, the location of magnetic pole also can be accomplished through the suitable shaping to the ferromagnetic part in the path that constitutes magnetic flux.The above-mentioned location of magnetic pole has increased respectively from side 107 and 108 tangential distance to immediate permanent magnet 110 and 113 of rotor sector 101, therefore for the layout 121 and 122 that rotor sector 101 is fastened to adjacent rotors sector 104 and 102 more spaces is provided.The above-mentioned location of magnetic pole has reduced in the p-m rotor of magneto and the coupling of the magnetic between the stator winding, still, on the other hand, also can reduce cogging torque.
Through will be in the central angle alpha shown in Fig. 1 1Be chosen to greater than
Figure BDA00001690745400041
Radian=11.25 ° and will be in the central angle alpha shown in Fig. 1 2Be chosen to greater than
Figure BDA00001690745400042
Can obtain above-mentioned characteristic at the magneto shown in Fig. 1.Denominator 8 comes from the fact that rotor sector 101 has four magnetic poles.Central angle alpha 1Be in first side 107 of rotor sector with near the angle between the magnetic axis 114 of the magnetic pole of this first side, and central angle alpha 2Be in second side 108 of rotor sector with near the angle between the magnetic axis 115 of the magnetic pole of this second side.Central angle alpha 1And central angle alpha 2This selection can characterize by means of following formula:
Figure BDA00001690745400043
and (1)
Figure BDA00001690745400044
R wherein AgIt is the air gap radius of rotor sector as shown in fig. 1.In conjunction with the external rotor electric machine that goes out as shown in fig. 1, this air gap radius R AgBe can by rotor ring around maximum radius of a circle.B 1And B 2Be tangential length, this tangential length is selected such that the enough tangential spacing of acquisition between the permanent magnet of adjacent rotor sector.Be fit to B 1And B 2Numerical value depend on the mechanical realization and the size of rotor sector as the case may be and/or depend on the geometry of stator winding.In actual conditions, 5mm is B 1And B 2Lower limit.
In the magneto shown in Fig. 1, the number of the magnetic pole of each rotor sector is four.In more common situation, be under the situation of p at the number of the magnetic pole of each rotor sector, central angle alpha 1 with central angle alpha 2 is:
Figure BDA00001690745400051
and (2)
Figure BDA00001690745400052
In rotor sector according to an embodiment of the invention, the magnetic axis of the magnetic pole of rotor sector is set pitch with uniform distances in this rotor sector, on tangential direction.In conjunction with the rotor sector 101 shown in Fig. 1, this will mean
Figure BDA00001690745400053
β 1, β 2And β 3Less than The fact be the conclusion of formula (1).β 1, β 2And β 3In each therefore less than summation α 1+ α 2=γ 1=γ 2, that is, the magnetic axis of whole magnetic poles of whole rotor is not to set pitch identically.
In rotor sector according to an embodiment of the invention, B 1Basically equal B 2, i.e. central angle alpha 1Basically equal central angle alpha 2
Fig. 2 shows the cross section of magneto according to an embodiment of the invention.Magneto shown in Fig. 2 is an inner rotor motor, and in this inner rotor motor, stator is arranged to around rotor.Said stator comprises the sectionalized stator iron core that is assembled by stator sector 225,226,227,228,229 and 230.Stator winding preferably but optionally be arranged in such a way, that is: each coil of stator winding occupies the only stator slot of a sector that belongs to stator core.In this case, the stator sector can twine separated from one anotherly, and the terminal of the winding of only different stator sectors must couple together with the mode that is fit to behind the assembling stator core.
According to one embodiment of present invention, the rotor of magneto comprises six rotor sectors 201,202,203,204,205 and 206 shown in figure 2.201-206 is secured to one another for the rotor sector, and is secured to axle 250.In Fig. 2, angle
Figure BDA00001690745400061
representes the central angle between second side 208 of first side 207 of rotor sector 201 and rotor sector 201.Because six similar rotor sectors are arranged; So central angle
Figure BDA00001690745400062
is π/3 radians, promptly 60 °.
Among the rotor sector 201-206 each comprises supporting construction, and said supporting construction can comprise lamination ferromagnetic material and/or solid ferromagnetic material.Among the rotor sector 201-206 each also comprises the permanent magnet that embeds superficial layer 232.Therefore, independent permanent magnet is not shown in Fig. 2.Permanent magnet is arranged on the air gap surface of rotor sector, magnetic pole is provided.In Fig. 2, the number of the magnetic pole of each rotor sector is p, and dotted line 214,217,218,219,231 and 215 is represented the magnetic axis of some magnetic poles in p the magnetic pole of rotor sector 201.Dotted line 216 is represented the magnetic axis of a magnetic pole in two outermost magnetic poles of rotor sector 206.Magnetic pole is located as follows, that is: at the mean value of the tangential spacing between the magnetic axis of the adjacent pole that belongs to the adjacent rotor sector greater than the tangential spacing between the magnetic axis of the adjacent pole that is belonging to same rotor sector.In Fig. 2, central angle γ 1Corresponding to the tangential spacing between the magnetic axis 214 and 216 of the adjacent pole that belongs to adjacent rotor sector 201 and 206 respectively.Central angle β 1, β 2..., β P-2And β P-2Corresponding to the tangential spacing between the magnetic axis of the adjacent pole that belongs to rotor sector 201.The above-mentioned location of magnetic pole has increased from the side of rotor sector to the tangential distance of immediate permanent magnet, for the layout that is used for each rotor sector is fastened to its adjacent rotor sector more spaces is provided thus.The above-mentioned location of magnetic pole has reduced in the stator winding of magneto and the coupling of the magnetic between the p-m rotor, still, on the other hand, also can reduce cogging torque.
In magneto according to an embodiment of the invention, in each rotor sector, the magnetic axis of magnetic pole is set pitch with uniform distances, and the magnetic pole of the stator pitch is different from the length of said uniform distances.
In magneto according to an embodiment of the invention, the length of said uniform distances, promptly the rotor magnetic pole pitch in each rotor sector roughly is:
（P S×p－n×τ S）／p，
P wherein SBe the magnetic pole of the stator pitch, p is the number of the magnetic pole of each rotor sector, τ SBe the stator slot pitch, and n is the integer more than or equal to 1.
For illustrative purposes, consider following example below:
Number=the p of the magnetic pole of-each rotor sector
-magnetic pole of the stator pitch=P S,
-stator slot pitch=τ S,
-referring to formula (1) and (2), the extra tangential distance B that locates in two sides of rotor sector 1And B 2Be the half the of stator slot pitch, i.e. B 1=B 2=τ S/ 2, and
-air gap radius is R Ag
In conjunction with external rotor electric machine as illustrated in fig. 1, the air gap radius R AgBe can by rotor ring around maximum radius of a circle, and, in conjunction with as inner rotor motor shown in figure 2, the air gap radius R AgBe can surrounding rotor minimum radius of a circle.
In above-mentioned example, at the central angle shown in Fig. 1 and 2
Figure BDA00001690745400071
α 1And α 2Be:
Figure BDA00001690745400072
and
Figure BDA00001690745400073
Therefore:
Figure BDA00001690745400074
and
Figure BDA00001690745400075
If magnetic pole of the stator pitch P for example S=150mm and stator slot pitch τ S=50mm, then central angle
Figure BDA00001690745400076
If the magnetic axis of the magnetic pole of each rotor sector is set pitch with uniform distances, the then length of this uniform distances, i.e. rotor magnetic pole pitch P in each rotor sector rBe:
﹙p×P S－2×τ S／2﹚／p=P S－τ S／p。
If magnetic pole of the stator pitch P for example S=150mm, stator slot pitch τ SThe number p=24 of the magnetic pole of=50mm and each rotor sector, then this rotor magnetic pole pitch P r=147.9mm.
It is restrictive that the concrete example that in the above explanation that provides, provides should not be interpreted as.Therefore, the present invention is not limited in the foregoing description.

Claims (10)

1. rotor sector (101,201) that is used for the rotor of magneto; In first side of said rotor sector and central angle maximum between second side (107,108,207,208) is the π radian; And said rotor sector comprises supporting construction (109) and permanent magnet (110-113); Said permanent magnet is attached to said supporting construction; And be arranged on the air gap surface of said rotor sector, provide at least two magnetic poles; When said rotor sector is used as said magneto a part of; Said air gap surface is characterized in that towards the stator of said magneto:
Figure FDA00001690745300012
and
Figure FDA00001690745300013
Wherein:
α 1Be in said first side (107,207) of said rotor sector and near the central angle between the magnetic axis (114,214) of the magnetic pole of said first side,
α 2Be in said second side (108,208) of said rotor sector and near the central angle between the magnetic axis (115,215) of the magnetic pole of said second side,
P is the number of the magnetic pole of said rotor sector,
R AgIt is the air gap radius of said rotor sector; In the situation of external rotor electric machine, said air gap radius be can by said rotor ring around maximum radius of a circle, and in the situation of inner rotor motor; Said air gap radius is can be around the minimum radius of a circle of said rotor, and
B 1And B 2Be tangential length, said tangential length is selected to and is used for when said rotor sector is used as said magneto a part of, obtains the enough tangential spacings between the permanent magnet of adjacent rotor sector, B 1More than or equal to 5 millimeters and B 2More than or equal to 5 millimeters, and a B 1/ R AgWith item B 2/ R AgShown that radian is the general rule of arc length divided by radius.
2. rotor sector according to claim 1, wherein, the magnetic axis of said magnetic pole is set pitch with uniform distances on tangential direction, and the central angle corresponding with each said uniform distances is less than α 1+ α 2
3. rotor sector according to claim 1 and 2, wherein, B 1Basically equal B 2
4. magneto, said magneto comprises stator and rotor, said rotor comprises at least two according to each the described rotor sector (101-104,201-206) among the claim 1-3.
5. magneto according to claim 4, wherein, in each rotor sector, the magnetic axis of said magnetic pole is set pitch with uniform distances, and the magnetic pole of the stator pitch is different from the length of said uniform distances.
6. magneto according to claim 5, wherein, the length of said uniform distances is roughly:
（P S×p－n×τ S）／p，
P wherein SBe said magnetic pole of the stator pitch, p is the number of the magnetic pole of each rotor sector, τ SBe the stator slot pitch, and n is the integer more than or equal to 1.
7. magneto according to claim 6, wherein, Integer n is 1.
8. according to each the described magneto among the claim 4-7, wherein, said magneto is an external rotor electric machine, makes said rotor around said stator.
9. according to each the described magneto among the claim 4-7, wherein, said magneto is an inner rotor motor, makes said stator around said rotor.
10. according to each the described magneto among the claim 4-9, wherein, said stator comprises the sectionalized stator iron core, and each coil of stator winding is arranged to occupy the only stator slot of a sector that belongs to said stator core.
CN201080053748.8A 2009-10-28 2010-10-20 A rotor segment for a rotor of a permanent magnet electrical machine Expired - Fee Related CN102630362B (en)

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Application Number Priority Date Filing Date Title
FI20096107A FI122303B (en) 2009-10-28 2009-10-28 Rotor segment for a rotor in a permanently magnetized electric machine
FI20096107 2009-10-28
PCT/FI2010/050817 WO2011051555A2 (en) 2009-10-28 2010-10-20 A rotor segment for a rotor of a permanent magnet electrical machine

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Publication number Priority date Publication date Assignee Title
CN110620457A (en) * 2018-06-19 2019-12-27 建准电机工业股份有限公司 Rotor of outer rotor type motor

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Publication number Priority date Publication date Assignee Title
DE102012208547A1 (en) 2012-05-22 2013-11-28 Wobben Properties Gmbh Synchronous generator of a gearless wind turbine
KR20240064343A (en) 2022-11-04 2024-05-13 한국해양과학기술원 Outer-rotor type permanent magnet synchronous generator

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CN2821195Y (en) * 2005-07-14 2006-09-27 潍坊中云机器有限公司 Split external rotor wind power generator
JP2007252079A (en) * 2006-03-15 2007-09-27 Nissan Motor Co Ltd Synchronous motor
WO2008146437A1 (en) * 2007-05-31 2008-12-04 Panasonic Corporation Electric motor
US20090134627A1 (en) * 2007-11-26 2009-05-28 Siemens Aktiengesellschaft Arrangement for a direct drive generator for a wind turbine and method for the assembly of the generator

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Publication number Priority date Publication date Assignee Title
CN2821195Y (en) * 2005-07-14 2006-09-27 潍坊中云机器有限公司 Split external rotor wind power generator
JP2007252079A (en) * 2006-03-15 2007-09-27 Nissan Motor Co Ltd Synchronous motor
WO2008146437A1 (en) * 2007-05-31 2008-12-04 Panasonic Corporation Electric motor
US20090134627A1 (en) * 2007-11-26 2009-05-28 Siemens Aktiengesellschaft Arrangement for a direct drive generator for a wind turbine and method for the assembly of the generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110620457A (en) * 2018-06-19 2019-12-27 建准电机工业股份有限公司 Rotor of outer rotor type motor

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KR20120088766A (en) 2012-08-08
CN102630362B (en) 2014-09-17
FI20096107A0 (en) 2009-10-28
FI20096107A (en) 2011-04-29
KR101339516B1 (en) 2014-01-10
WO2011051555A3 (en) 2011-11-17
FI122303B (en) 2011-11-30

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