CN103026589A - 旋转电机 - Google Patents

旋转电机 Download PDF

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Publication number
CN103026589A
CN103026589A CN2011800238141A CN201180023814A CN103026589A CN 103026589 A CN103026589 A CN 103026589A CN 2011800238141 A CN2011800238141 A CN 2011800238141A CN 201180023814 A CN201180023814 A CN 201180023814A CN 103026589 A CN103026589 A CN 103026589A
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China
Prior art keywords
rotor
electric rotating
laminated core
groove
rotating machine
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CN2011800238141A
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English (en)
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R·N·奥凯
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GE Renewable Technologies Wind BV
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Alstom Hydro France SAS
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Publication of CN103026589A publication Critical patent/CN103026589A/zh
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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/26Rotor cores with slots for windings
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02KDYNAMO-ELECTRIC MACHINES
    • H02K1/00Details of the magnetic circuit
    • H02K1/06Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/22Rotating parts of the magnetic circuit
    • H02K1/28Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
    • H02K1/30Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures using intermediate parts, e.g. spiders

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

本发明涉及一种旋转电机,尤其是一种功率范围从20MVA到500MVA的双馈型异步电机。所述电机包括能够绕着轴旋转并被定子同轴地围绕的转子以及具有层状片堆叠体的空心圆柱形转子片体,所述层状片堆叠体由多个以环形段的形式的片金属段(27)组成,由压制板对所述片金属段(27)施加均匀压力。所述段由在轴向方向上穿过所述转子片体的螺栓固定。所述片堆叠体借助于在轴向上沿所述转子片体(15)的内半径(31)的槽(29)而与所述转子的同轴中心体啮合。为了获得没有不利地影响冷却系统的这种类型电机的机械耦接,每个槽(29)由一对肋(30)形成,所述肋位于所述片金属段(27)的内半径(31)上且由所述槽的宽度分开,所述肋具有径向向内的取向。

Description

旋转电机
技术领域
本发明涉及电机领域。本发明涉及一种根据权利要求1的前序部分的旋转电机。
背景技术
双馈型异步电机是众所周知的。下面将以示例的方式示出它们的设计。旋转电机或异步电机包括转子,该转子可以绕着轴旋转并且被定子同轴地围绕。定子具有定子绕组,该定子绕组容纳在定子叠层芯(laminated core)内并且以定子端部绕组的形式从定子叠层芯的端部突出。
转子包括具有轴的中心体,在该中心体的端部设置有用于传输电流的滑环(slip ring)。转子叠层芯绕着中心体延伸,该转子叠层芯携载有以转子端部绕组的形式从转子叠层芯的端部突出的转子绕组。必须紧固转子绕组来抵抗所产生的离心力。转子叠层芯的转子叠层堆叠体(lamination stack)用于吸收这些力并同时限定磁通量的路径。
辅助轮缘(rim)24设置在转子叠层芯的端部。与转子叠层堆叠体类似,辅助轮缘由叠层片组成,在轴向方向上压制该叠层片以形成复合组件。借助于多个在轴向方向上延伸穿过转子叠层芯和辅助轮缘的螺栓来进行该压制。压制板设置在辅助轮缘与转子叠层芯或轮缘之间以便分散压力。
转子的转子叠层芯和中心体是独立部件,两者必须彼此啮合以便传递扭矩。公开文献US 4942324(参见其图1)公开了提供楔子(26),其啮合在轮缘(24)的内圆周中的对应切槽(cut slot)中,以便在轮缘(24)与轮彀(hub)(9)之间提供耦接。该已知的连接类型重现在本申请唯一附图的右半部分的叠层段27′中,其中槽29′设置在叠层段27′的内圆周上,用于轮缘与中心体之间的啮合。
由于槽29′在径向方向上延伸到叠层段27′或轮缘中,因此必须将用于螺栓的孔28′向外移以维持距槽29′足够的径向距离。这导致承载(load-bearing)轮缘高度不利地减小。
发明内容
因此本发明的目的是创建引言部分中所提及的类型的旋转电机,其避免了由于中心体与轮缘之间的机械连接而导致的不利限制。
该目的由权利要求1的全部特征来实现。
所提出的解决方案的基本特征是:槽在各种情况下均由径向向内对齐的凸轮对形成,该凸轮设置在叠层段的内半径上并且通过槽的宽度而彼此分开。通过沿着内半径设置凸轮,槽可以更移近转子的中心。这种新的形式也允许在增大磁轭的尺寸的同时,用于剪力螺栓(shear bolt)的孔也可以向内偏移而无需改变叠层或转子的内半径或外半径,并且几乎不增加转子叠层芯的重量。仍然能保证用于冷却的风道足够大。
根据本发明的优选实施例,凸轮的径向高度等于槽的槽深。
通过适当的制造工艺从叠层段形成凸轮。特别地,在这里将冲压或激光成形作为优选方法提出。
根据本发明的补充实施例,转子叠层堆叠体的相邻叠层段设置为彼此相对偏移。
附图说明
以下将结合附图参照示例性实施例更详细的说明本发明。
唯一附图示出了根据本发明的示例性实施例的用于具有互锁连接装置的异步电机的转子叠层芯的叠层段。
具体实施方式
附图示出了在先方案(附图的右半部分;现有技术)与根据本发明的方案(附图的左半部分)的示例性实施例之间的差异的直接比较。
在叠层段27、27′中切割槽以便将扭矩从中心体传递到转子叠层芯。在根据现有技术的方案的情况下,如从附图的右半部分可见,在叠层段27′中切割出这些槽29′会导致承载轮缘高度减小。
如从附图的左半部分所见,通过沿着内径31设置凸轮30,可以将槽29朝向转子11的中心进一步向内移。
根据本发明的这种措施允许在增大磁轭的尺寸的同时,用于剪力螺栓的镗孔或孔28也可以向内偏移而无需改变叠层或转子的内半径或外半径。这显著地改进了从转子的中心体到转子叠层芯的叠层堆叠体的力的传递,同时不会对冷却产生负面影响,并且几乎没有增大转子叠层芯的重量。
以本身已知的方式,槽29可以为矩形、大致矩形、梯形或任何其它截面形状。
叠层段27在叠层堆叠体内是层状的。即,叠层段27设置为层与层之间彼此相对偏移。这种措施用来增加叠层堆叠体的机械完整性并减小翘曲的风险。

Claims (7)

1.一种旋转电机,尤其是一种功率范围从20MVA到500MVA的双馈型异步电机,所述电机包括转子,所述转子能够绕着轴旋转并被定子同轴地围绕且具有空心圆柱形转子叠层芯,所述转子叠层芯包括由多个环区段形叠层段(27)组成的层状叠层堆叠体,所述叠层段(27)在外缘上配备有用于容纳转子绕组的齿部(20),并且所述叠层段(27)借助于在轴向方向上穿过所述转子叠层芯和压制板的螺栓而被夹紧,并且所述转子叠层芯借助于所述转子叠层芯的内半径(31)上的轴向槽(29)而与所述转子的同轴中心体啮合以便传递扭矩,其特征在于:所述槽(29)在各种情况下均由径向向内对齐的凸轮(30)对形成,所述凸轮(30)设置在所述叠层段(27)的内半径(31)上并且通过所述槽的宽度而彼此分开。
2.根据权利要求1所述的旋转电机,其特征在于:所述凸轮(30)的径向高度等于所述槽(29)的槽深。
3.根据权利要求1或2所述的旋转电机,其特征在于:面对所述槽(29)的相应的相邻凸轮(30)的表面至少大致平行地对齐。
4.根据权利要求1和2中任一项所述的旋转电机,其特征在于:由所述凸轮(30)形成的所述槽(29)为梯形。
5.根据权利要求1至4中任一项所述的旋转电机,其特征在于:所述凸轮(30)通过由所述叠层段(27)冲压出而形成。
6.根据权利要求1至4中任一项所述的旋转电机,其特征在于:所述凸轮(30)通过激光工艺而由所述叠层段(27)形成。
7.根据权利要求1所述的旋转电机,其特征在于:所述转子叠层芯的相邻叠层段(27)设置为彼此相对偏移。
CN2011800238141A 2010-05-10 2011-05-09 旋转电机 Pending CN103026589A (zh)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102010019818 2010-05-10
DE102010019818.8 2010-05-10
PCT/EP2011/057443 WO2011141435A2 (de) 2010-05-10 2011-05-09 Rotierende elektrische maschine

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CN103026589A true CN103026589A (zh) 2013-04-03

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US (1) US20130062991A1 (zh)
EP (1) EP2569852A2 (zh)
JP (1) JP2013526822A (zh)
CN (1) CN103026589A (zh)
CA (1) CA2799033A1 (zh)
DE (1) DE202011110583U1 (zh)
ES (1) ES1126730Y (zh)
PT (1) PT11073T (zh)
RU (1) RU2012152937A (zh)
WO (1) WO2011141435A2 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124802A (zh) * 2013-04-25 2014-10-29 通用汽车环球科技运作有限责任公司 电机转子的线圈保持架

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3048703B1 (fr) * 2015-01-20 2021-10-06 GE Energy Power Conversion Technology Ltd Masse magnétique pour rotor, rotor, machine électrique et procédé de fabrication de cette masse
DE102016210993A1 (de) * 2016-06-20 2017-12-21 Continental Automotive Gmbh Rotor für eine elektrische Asynchronmaschine mit angegossenem Käfigläufer, elektrische Maschine und Herstellungsverfahren

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073604B (de) * 1960-01-21 Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen Verfahren zum Paketieren der Läuferbleche einer elektrischen Maschine in Schichtbauart
US4942324A (en) * 1988-05-30 1990-07-17 Mitsubishi Denki Kabushiki Kaisha Rotor for rotary electric machine
EP0414129A2 (en) * 1989-08-16 1991-02-27 Hitachi, Ltd. Electric rotary machine, method for producing the same and hydro-electric power installation with the machine
US20070222326A1 (en) * 2005-12-08 2007-09-27 A.O. Smith Corporation Rotor assembly having a reduced back portion and a method of manufacturing same

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1073604B (de) * 1960-01-21 Siemens-Schuckertwerke Aktiengesellschaft, Berlin Und Erlangen Verfahren zum Paketieren der Läuferbleche einer elektrischen Maschine in Schichtbauart
US4942324A (en) * 1988-05-30 1990-07-17 Mitsubishi Denki Kabushiki Kaisha Rotor for rotary electric machine
EP0414129A2 (en) * 1989-08-16 1991-02-27 Hitachi, Ltd. Electric rotary machine, method for producing the same and hydro-electric power installation with the machine
US20070222326A1 (en) * 2005-12-08 2007-09-27 A.O. Smith Corporation Rotor assembly having a reduced back portion and a method of manufacturing same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104124802A (zh) * 2013-04-25 2014-10-29 通用汽车环球科技运作有限责任公司 电机转子的线圈保持架
CN104124802B (zh) * 2013-04-25 2017-04-12 通用汽车环球科技运作有限责任公司 电机转子的线圈保持架

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Publication number Publication date
CA2799033A1 (en) 2011-11-17
JP2013526822A (ja) 2013-06-24
RU2012152937A (ru) 2014-06-20
ES1126730U (es) 2014-10-07
WO2011141435A3 (de) 2012-11-22
PT11073T (pt) 2015-03-23
EP2569852A2 (de) 2013-03-20
US20130062991A1 (en) 2013-03-14
ES1126730Y (es) 2015-01-20
WO2011141435A2 (de) 2011-11-17
DE202011110583U1 (de) 2014-10-27

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