CN1049535C - 旋转电机 - Google Patents
旋转电机 Download PDFInfo
- Publication number
- CN1049535C CN1049535C CN94191667A CN94191667A CN1049535C CN 1049535 C CN1049535 C CN 1049535C CN 94191667 A CN94191667 A CN 94191667A CN 94191667 A CN94191667 A CN 94191667A CN 1049535 C CN1049535 C CN 1049535C
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- electric rotating
- rotating machine
- coating
- conductor
- machine according
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- 239000004020 conductor Substances 0.000 claims abstract description 35
- 238000000576 coating method Methods 0.000 claims abstract description 25
- 239000011248 coating agent Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 239000000919 ceramic Substances 0.000 claims abstract description 11
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 239000010949 copper Substances 0.000 claims abstract description 9
- 238000004804 winding Methods 0.000 claims abstract description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 12
- 238000005219 brazing Methods 0.000 claims description 3
- 239000002241 glass-ceramic Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000696 magnetic material Substances 0.000 claims description 3
- 229920003002 synthetic resin Polymers 0.000 claims description 3
- 239000000057 synthetic resin Substances 0.000 claims description 3
- 239000000725 suspension Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 238000007750 plasma spraying Methods 0.000 claims 1
- 238000002791 soaking Methods 0.000 claims 1
- 239000000758 substrate Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000005507 spraying Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000010891 electric arc Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000011247 coating layer Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/32—Windings characterised by the shape, form or construction of the insulation
- H02K3/34—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation
- H02K3/345—Windings characterised by the shape, form or construction of the insulation between conductors or between conductor and core, e.g. slot insulation between conductor and core, e.g. slot insulation
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K17/00—Asynchronous induction motors; Asynchronous induction generators
- H02K17/02—Asynchronous induction motors
- H02K17/16—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors
- H02K17/20—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having deep-bar rotors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/30—Windings characterised by the insulating material
Landscapes
- Power Engineering (AREA)
- Engineering & Computer Science (AREA)
- Manufacture Of Motors, Generators (AREA)
- Insulation, Fastening Of Motor, Generator Windings (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)
- Induction Machinery (AREA)
- Coating By Spraying Or Casting (AREA)
- Windings For Motors And Generators (AREA)
- Control Of Multiple Motors (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Motor Or Generator Frames (AREA)
- Synchronous Machinery (AREA)
Abstract
在大型旋转电机中具有转子(1)，它含有位于转子铁芯(7)的槽(5)中的铜条导体(3)，导体以其端部连接在一起而形成绕组，条状导体通过在导体上的陶瓷基材料的涂层使其与转子铁芯在电气上绝缘。涂层用于防止在导体条和转子铁芯之间产生火化。
Description
本发明涉及旋转电机。
更具体地说，本发明涉及额定功率超过10千瓦的旋转电机，这种电机具有位于磁性材料的转子铁芯的槽中的铜或以铜为基础材料的棒状导体，这些导体连接在一起而形成绕组。这种电机今后就称作为特定类型的旋转电机。这类电机的例子是感应电动机，其中的转子棒状导体在其端部连接在一起而形成鼠笼式绕组，另外的例子就是同步电动机，其中的转子导体连接在一起而形成阻尼笼式绕组。
在这些电机中转子棒状导体通常是不绝缘的。但是，近年来人们发现，在某些情况下来绝缘的导体铜条的转子铁芯之间会发生火花。这种火花在要求工作于爆炸气氛下的电机中是不能接受的。
已经发现，这种火花可以通过保证棒状导体连续地和转子铁芯保持完好的电接触而避免。但是，尽管这种接触在新电机中是可以实现的，却不能保证在电机的整个寿命期内得以维持，这是因为，例如，棒状导体和转子铁芯的材料具有不同的热膨胀。
对于火花问题的另一种解决方法是使棒状导体和转子铁芯间形成绝缘。但是，已经证明选择满意的绝缘方法是很难的。例如，把导体用绝缘带或绝缘片包扎起来已证明是不能满意的，因为已证明，不可能使带或片包扎得足够紧，使包扎后的导体在转子铁芯的槽内达到足够的紧固度以避免铜棒的疲劳损坏。
本发明的一个目标是提供一种特定种类的旋转电机，在其中这一问题可得到缓解。
根据本发明，提供一种特定种类的旋转电机，其中的转子棒状导体通过在导体上覆盖一层陶瓷基的材料而与转子铁芯绝缘。
这个涂层适当地包括氧化铝(刚玉)陶瓷基材料，其厚度小于500微米。
这种涂层最好是微孔的陶瓷基材料，这样的涂层可以用等离子体喷涂工艺适当地施加在导体棒材上。
在涂层是微孔材料时，合宜的情况是用合成树脂材料加以浸渍。
两种按照本发明的旋转电机将通过例子并参考附图在这里予以说明，这附图是电机转子的部分图解透视图。
参考附图，第一台要说明的电机是一台额定功率为1500千瓦的感应电动机，它有一个由50根铜质转子导体条3组成的鼠笼式转子1，这些导体条分布在沿转子铁芯7的周围的槽5中，每个导体3有一个L形的截面，其总体尺寸为10.04×45.74毫米并有一个辐板部分9，即垂直的肢状部分，其尺寸为3.5×10毫米。
转子铁芯7是分段形式的，以传统方式用厚度为0.5毫米的磁性材料的叠片制造而成。
在嵌入转子槽5中以前，转子导体棒3先在等离子体喷射枪中用在惰性气体内的氧化铝陶瓷粉以等离子体喷涂技术在其上涂上一层电绝缘涂层。等离子体喷涂工艺本身是众所周知，例如，可以参阅1988年9月一期的《科学的美国人》78到83页上的一篇文章，题目是“等离子体喷射涂层”。
等离子体喷射枪一般包括一个水冷的锥形阴极，它位于水冷的圆角形阳极之内，阳极延伸到阴极之外以形成一个喷嘴。一股惰性气体流，一般是氩和氢的混合气体，通过阳极和阴极之间的空间，在那里气体被离化而形成等离子体。粉状材料通过一根管子导入到等离子体射流中，这是在喷嘴中形成的。
连接在阳极和阴极间的直流电源在工作时维持一个电弧，此电弧则产生等离子体焰并喷射到喷嘴之外。等离子体焰中合有熔融的粉状颗粒，喷焰把它们推向到靶上，在那里它们固化而形成一个涂层。
在用等离子体喷涂工艺形成涂层后，涂层就用任何一种方便的已知工艺，例如真空浸渍工艺来用合成树脂材料进行浸渍。
加上涂层的导体条3嵌到转子铁芯槽5中并且用铜焊或焊接的方法把它们的端部焊到铜或铜合金的端环11上而使它们连接在一起以形成一个鼠笼式绕组。
在第二种电机中，涂层不是用等离子体喷涂工艺和浸渍而形成的，而是用下述方式形成的，即把导体条3浸泡在适当的陶瓷基材料的悬浮液中，例如悬浮在水中的玻璃陶瓷粉，然后进行焙烧。
利用陶瓷基材料在导体条3上形成绝缘涂层可以提供极其坚固的涂层，它能牢固地附着在导体上并提供所需要的绝缘强度，而同时还可以提供从导体条3到转子铁芯7的所要求的导热水平。此外，涂层有足够的牢固程度以耐受在铜焊或焊接到端环11上时导体条3的端部所受的变形。
很明显，按照本发明，除了氧化铝和玻璃陶瓷外别的陶瓷材料也可以用作电机的转子条的绝缘涂层。一般说来，迄今为止用于其它目的的材料，例如用在内燃机部件上的为了提供耐热和/或耐磨涂层的材料，即基于锆的氧化物，如在上面提到过的在科学的美国人中的文章所说明的那些材料，预期也可能是令人满意的。
Claims (9)
1.一个额定功率超过10千瓦的旋转电机，带有一个转子，该转子包括铜或以铜为基的材料的条状导体，该导体条位于磁性材料的转子铁芯(7)的槽(5)中且相连在一起形成一个绕组，其特征在于，该导体条(3)涂有一层热处理后的以陶瓷为基的材料的涂层，从而与转子铁芯(7)在电气上绝缘。
2.根据权利要求1所述的旋转电机，其特征在于所述的导体条通过焊接或钎接电连接到共同的端环(11)上以构成所述的绕组。
3.根据权利要求1所述的旋转电机，其特征在于所述的涂层包括氧化铝陶瓷基材料。
4.根据权利要求1所述的旋转电机，其特征在于所述的涂层的厚度为小于500微米。
5.根据权利要求1、2或3所述的旋转电机，其特征在于所述的涂层含有微孔陶瓷基材料。
6.根据权利要求5所述的旋转电机，其特征在于所述的涂层是采用等离子体喷涂工艺施加到导体上的。
7.根据权利要求5所述的旋转电机，其特征在于所述的涂层用合成树脂材料浸渍。
8.根据权利要求1-4的任何一个所述的旋转电机，其特征在于涂层是在把导体浸泡在陶瓷基材料的悬浮液中后再进行焙烧而施加到导体条(3)上的。
9.根据权利要求8所述的旋转电机，其特征在于陶瓷基材料是一种玻璃陶瓷基材料。
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9306824.5 | 1993-04-01 | ||
| GB9306824A GB2277205B (en) | 1993-04-01 | 1993-04-01 | Rotating electrical machines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1120376A CN1120376A (zh) | 1996-04-10 |
| CN1049535C true CN1049535C (zh) | 2000-02-16 |
Family
ID=10733163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94191667A Expired - Fee Related CN1049535C (zh) | 1993-04-01 | 1994-03-16 | 旋转电机 |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6310418B1 (zh) |
| EP (1) | EP0697148B1 (zh) |
| JP (1) | JP3281922B2 (zh) |
| CN (1) | CN1049535C (zh) |
| AT (1) | ATE158450T1 (zh) |
| BR (1) | BR9406241A (zh) |
| CA (1) | CA2158161C (zh) |
| DE (1) | DE69405727T2 (zh) |
| DK (1) | DK0697148T3 (zh) |
| ES (1) | ES2106516T3 (zh) |
| FI (1) | FI954644A0 (zh) |
| GB (1) | GB2277205B (zh) |
| GR (1) | GR3025575T3 (zh) |
| WO (1) | WO1994023487A1 (zh) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE508533C2 (sv) * | 1997-02-10 | 1998-10-12 | Asea Brown Boveri | Industrirobot med en vridskiva som är elektriskt isolerad från industriroboten samt ett förfarande för tillverkning av sådan robot |
| EP1009090A1 (en) * | 1998-12-10 | 2000-06-14 | GENERAL ELECTRIC CANADA, Inc. | Spark suppresion of induction type rotors |
| DE10312441B4 (de) * | 2003-03-20 | 2009-02-26 | Compact Dynamics Gmbh | Wanderfeldmaschine |
| WO2005046044A1 (en) * | 2003-11-06 | 2005-05-19 | Varispeed Electric Motors Pty Ltd | A variable speed power generator having two induction generators on a common shaft |
| AU2004307733B2 (en) * | 2004-11-08 | 2011-04-07 | Varispeed Electric Motors Pty Ltd | A variable speed power generator having two induction generators on a common shaft |
| US7655868B2 (en) | 2008-01-08 | 2010-02-02 | General Electric Company | Stator bar components with high thermal conductivity |
| US8274190B2 (en) * | 2010-05-28 | 2012-09-25 | General Electric Company | Electric machine rotor bar and method of making same |
| GB201321420D0 (en) * | 2013-12-04 | 2014-01-15 | Eaton Ltd | High slip variable frequency induction motors |
| DE102014201702A1 (de) | 2014-01-31 | 2015-08-06 | Volkswagen Ag | Verfahren zur Herstellung einer nasslaufenden elektrischen Maschine und elektrische Maschine |
| EP3119727B1 (en) * | 2014-03-20 | 2021-01-20 | General Electric Technology GmbH | An insulation material and a method to produce |
| CN105634172A (zh) * | 2014-11-04 | 2016-06-01 | 珠海格力节能环保制冷技术研究中心有限公司 | 电机及其定子槽间绝缘支架 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3213302A (en) * | 1961-07-12 | 1965-10-19 | Gen Electric | Insulated metallic articles |
| JPS63253842A (ja) * | 1987-04-10 | 1988-10-20 | Toshiba Corp | 界磁コイルの製作方法 |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB824861A (en) * | 1955-10-12 | 1959-12-09 | Degussa | An electric conductor |
| US3659129A (en) * | 1970-09-15 | 1972-04-25 | Gen Electric | Insulated bar dynamoelectric machine and method of forming |
| US4054500A (en) | 1975-04-28 | 1977-10-18 | Gte Sylvania Incorporated | Method of making refractory metal-ceramic crucible |
| ZA78378B (en) | 1977-01-21 | 1979-06-27 | Hawker Siddeley Africa Ltd | Insulated bearings and methods of producing same |
| US4429007A (en) * | 1981-10-21 | 1984-01-31 | The United States Of America As Represented By The United States Department Of Energy | Electrical wire insulation and electromagnetic coil |
| JPS61276307A (ja) | 1985-05-31 | 1986-12-06 | Mitsubishi Electric Corp | 超電導コイル |
| NO162957C (no) * | 1986-04-30 | 1990-03-14 | Norske Stats Oljeselskap | Fremgangsmaate for fremstilling av et kromoksydbelegg. |
| JP2913773B2 (ja) | 1990-06-04 | 1999-06-28 | セイコーエプソン株式会社 | プリンタ |
| DE4106700A1 (de) | 1990-11-17 | 1992-05-21 | Ruetgers Pagid Ag | Schwingungsgedaempfte metallische traegerplatten |
| US5208190A (en) | 1991-10-08 | 1993-05-04 | Wisconsin Alumni Research Foundation | Microporous alumina ceramic membranes |
| JPH0656928A (ja) | 1992-08-07 | 1994-03-01 | Ube Ind Ltd | オレフィン重合用固体触媒 |
| US5436083A (en) * | 1994-04-01 | 1995-07-25 | Dow Corning Corporation | Protective electronic coatings using filled polysilazanes |
| US5711987A (en) * | 1996-10-04 | 1998-01-27 | Dow Corning Corporation | Electronic coatings |
| US5935638A (en) * | 1998-08-06 | 1999-08-10 | Dow Corning Corporation | Silicon dioxide containing coating |
-
1993
- 1993-04-01 GB GB9306824A patent/GB2277205B/en not_active Expired - Fee Related
-
1994
- 1994-03-16 DK DK94909222.5T patent/DK0697148T3/da active
- 1994-03-16 WO PCT/GB1994/000517 patent/WO1994023487A1/en not_active Application Discontinuation
- 1994-03-16 CA CA002158161A patent/CA2158161C/en not_active Expired - Fee Related
- 1994-03-16 BR BR9406241A patent/BR9406241A/pt not_active IP Right Cessation
- 1994-03-16 ES ES94909222T patent/ES2106516T3/es not_active Expired - Lifetime
- 1994-03-16 EP EP94909222A patent/EP0697148B1/en not_active Revoked
- 1994-03-16 CN CN94191667A patent/CN1049535C/zh not_active Expired - Fee Related
- 1994-03-16 DE DE69405727T patent/DE69405727T2/de not_active Revoked
- 1994-03-16 JP JP52178394A patent/JP3281922B2/ja not_active Expired - Fee Related
- 1994-03-16 AT AT94909222T patent/ATE158450T1/de not_active IP Right Cessation
-
1995
- 1995-09-29 FI FI954644A patent/FI954644A0/fi not_active Application Discontinuation
-
1997
- 1997-12-03 GR GR970403225T patent/GR3025575T3/el unknown
-
1999
- 1999-08-06 US US09/369,763 patent/US6310418B1/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3213302A (en) * | 1961-07-12 | 1965-10-19 | Gen Electric | Insulated metallic articles |
| JPS63253842A (ja) * | 1987-04-10 | 1988-10-20 | Toshiba Corp | 界磁コイルの製作方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| FI954644A (fi) | 1995-09-29 |
| DE69405727T2 (de) | 1998-01-08 |
| DE69405727D1 (de) | 1997-10-23 |
| ES2106516T3 (es) | 1997-11-01 |
| BR9406241A (pt) | 1996-01-09 |
| GB2277205B (en) | 1996-04-10 |
| JP3281922B2 (ja) | 2002-05-13 |
| GB2277205A (en) | 1994-10-19 |
| CA2158161A1 (en) | 1994-10-13 |
| GB9306824D0 (en) | 1993-05-26 |
| CA2158161C (en) | 1999-07-27 |
| EP0697148B1 (en) | 1997-09-17 |
| JPH08508394A (ja) | 1996-09-03 |
| CN1120376A (zh) | 1996-04-10 |
| DK0697148T3 (da) | 1998-05-04 |
| WO1994023487A1 (en) | 1994-10-13 |
| US6310418B1 (en) | 2001-10-30 |
| FI954644A0 (fi) | 1995-09-29 |
| GR3025575T3 (en) | 1998-03-31 |
| EP0697148A1 (en) | 1996-02-21 |
| ATE158450T1 (de) | 1997-10-15 |
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