WO2004027960A1 - Elektrische maschine mit einem stator mit gekühlten wicklungsstäben - Google Patents
Elektrische maschine mit einem stator mit gekühlten wicklungsstäben Download PDFInfo
- Publication number
- WO2004027960A1 WO2004027960A1 PCT/CH2003/000540 CH0300540W WO2004027960A1 WO 2004027960 A1 WO2004027960 A1 WO 2004027960A1 CH 0300540 W CH0300540 W CH 0300540W WO 2004027960 A1 WO2004027960 A1 WO 2004027960A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cooling
- winding bars
- electrical machine
- stator
- slots
- Prior art date
Links
Classifications
-
- 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
- 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
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/24—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
Definitions
- the present invention relates to the field of cooling electrical machines. It relates to an electrical machine according to the preamble of claim 1.
- Such a machine is e.g. known from EP-B1-0 172 397.
- Large rotating electrical machines such as generators for generating electrical energy, comprise a rotor and a stator, which concentrically surrounds the rotor.
- the stator is usually made up of individual sheets build sheet metal body executed.
- the stator winding accommodated in the stator is formed with individual winding bars, which are inserted into corresponding grooves in the sheet metal body of the stator and secured in the grooves by slot wedges.
- FIG. 1 A cross section through a slot of a stator from the prior art filled with winding bars is shown in detail in FIG. 1.
- the stator 10 'from FIG. 1 the lower, transverse boundary of which at the same time limits the air gap to the underlying rotor not shown in FIG. 1, has a groove 12 in the sheet metal body 11 which extends radially outward from the air gap , in which two winding bars 14 and 13 are arranged one above the other in the radial direction.
- the winding bars 13, 14 themselves have a complicated internal structure, which is indicated in FIG. 1 and will not be discussed further here.
- a useful intermediate layer 17 is provided between the two winding bars 13, 14 and serves to improve the electrical and mechanical properties of the winding.
- the winding bars 13, 14 are secured in the groove 12 in a manner known per se by a wedge 15. Between the wedge 15 and the upper winding bar 14, a wedge pad 16 is usually additionally provided.
- a considerable electrical power loss is generated in the windings, which is generated as heat and must be dissipated to the outside of the windings.
- a cooling medium usually air or another gas
- air or another gas usually flows through special radial cooling slots in the stator sheet metal body, and also in the axial direction through the air gap or axial channels that run between the grooves in the sheet metal body.
- One possibility of improved cooling of the winding bars is to make the winding bars partially hollow and thus to design them as cooling channels (see, for example, DE-A1-196 21 058). However, this reduces the conductor cross section.
- the object is achieved by the entirety of the features of claim 1.
- the essence of the invention is that the conventional solid material spacing means between the winding bars are replaced by tubular spacing elements extending in the axial direction, the interior of which in each case forms a channel for the cooling medium.
- a very efficient cooling channel can be set up directly between the winding bars, which effectively dissipates the heat loss from the winding bars.
- the tubular spacer elements are designed to be resilient in the radial direction. This can be achieved in particular in that the spacer elements have a lenticular cross section.
- the cooling spacer elements can be integrated particularly easily into the cooling circuit of the machine if cooling slots through which the cooling medium flows are arranged at regular intervals in the sheet metal body of the stator transverse to the winding bars and if the spacing elements each have openings in the area of the cooling slots , through which cooling medium can flow from the interior of the spacer elements into the cooling slots or from the cooling slots into the interior of the spacer elements.
- the coupling is particularly good if means are present in the cooling slots which direct the flow of the cooling medium out of the cooling slots into the openings of the spacer elements.
- Spacers which are arranged in the cooling slots are preferably used as flow directing means.
- Fig. 1 in cross section a filled with winding bars groove in one
- FIG. 2 in a representation comparable to Fig. 1 a preferred
- FIG 3 shows a perspective, partially cut-away side view of a preferred type of coupling between the spacer element according to the invention and the (existing) radial cooling slots of the stator.
- the stator 10 has a plurality of grooves 12 running in the radial direction for receiving winding rods 13, 14 (running in the axial direction) ) Wedge 18 fixed. Between the winding bars 13, 14 a hollow spacer 9 with a lenticular cross section is now arranged instead of the conventional useful intermediate layer made of solid material.
- the hollow interior of the spacer element 19 forms a channel 20 through which cooling medium can flow between the winding bars 13, 14 and can absorb heat from the winding bars 13, 14 with high efficiency.
- the lenticular cross section of the spacer element 19 has two advantages: On the one hand, with a suitable choice of material for the spacer element 19, a spring effect results which biases the winding bars in the radial direction. As a result, vibrations in the winding bars 13, 14 or thermal expansions or the like can be absorbed and neutralized, which significantly improves operational reliability. On the other hand, the flat sides of the "lens" lie with a larger area on the adjacent winding bars, which significantly increases the heat transfer between winding bars 13, 14 and spacer element.
- the channel 20 of the spacer element 19 is now advantageously incorporated in a simple manner into the existing cooling circuit of the stator 10 in that the grooves 12 at the locations where the (radial) cooling slots 21, 22 in the sheet metal body 11 of the stator are located cross, corresponding openings 25,... 28 are provided in the spacer elements 19, through which the channel 20 in the spacer element 19 can exchange cooling medium in one direction or the other with the cooling slots 21, 22.
- arrows indicate a flow direction in which cooling medium flows from the cooling slots 21, 23 through the openings 25,... 28 into the channel 20 and flows out of the channel 20 in the axial direction.
- This flow is increased in that the spacers 23, 24, which are provided in the cooling slots 21, 22 for the mechanical stabilization of the cooling slots 21, 22, are bent in a flow-guiding manner towards the openings 25,... 28.
- the reverse flow direction is also provided.
- the current flow direction depends on the overall flow plan of the machine or the stator.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Windings For Motors And Generators (AREA)
- Motor Or Generator Cooling System (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2499641A CA2499641C (en) | 2002-09-23 | 2003-08-11 | Electrical machine having a stator with cooled winding bars |
AU2003249829A AU2003249829A1 (en) | 2002-09-23 | 2003-08-11 | Electrical machine with a stator with cooled winding bars |
EP03797132A EP1543603B1 (de) | 2002-09-23 | 2003-08-11 | Elektrische maschine mit einem stator mit gekühlten wicklungsstäben |
BR0314703-7A BR0314703A (pt) | 2002-09-23 | 2003-08-11 | Máquina elétrica tendo um estator com barras de enrolamento resfriadas |
AT03797132T ATE463071T1 (de) | 2002-09-23 | 2003-08-11 | Elektrische maschine mit einem stator mit gekühlten wicklungsstäben |
DE50312572T DE50312572D1 (de) | 2002-09-23 | 2003-08-11 | Elektrische maschine mit einem stator mit gekühlten wicklungsstäben |
US11/081,964 US7242119B2 (en) | 2002-09-23 | 2005-03-17 | Electrical machine having a stator with cooled winding bars |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10244202A DE10244202A1 (de) | 2002-09-23 | 2002-09-23 | Elektrische Maschine mit einem Stator mit gekühlten Wicklungsstäben |
DE10244202.9 | 2002-09-23 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/081,964 Continuation US7242119B2 (en) | 2002-09-23 | 2005-03-17 | Electrical machine having a stator with cooled winding bars |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004027960A1 true WO2004027960A1 (de) | 2004-04-01 |
Family
ID=31896306
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CH2003/000540 WO2004027960A1 (de) | 2002-09-23 | 2003-08-11 | Elektrische maschine mit einem stator mit gekühlten wicklungsstäben |
Country Status (10)
Country | Link |
---|---|
US (1) | US7242119B2 (de) |
EP (1) | EP1543603B1 (de) |
CN (1) | CN1320734C (de) |
AT (1) | ATE463071T1 (de) |
AU (1) | AU2003249829A1 (de) |
BR (1) | BR0314703A (de) |
CA (1) | CA2499641C (de) |
DE (2) | DE10244202A1 (de) |
ES (1) | ES2343795T3 (de) |
WO (1) | WO2004027960A1 (de) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008016758A1 (de) | 2008-03-31 | 2009-10-01 | Alstom Technology Ltd. | Stator für eine elektrische Maschine sowie elektrische Maschine mit einem solchen Stator |
EP2112745A1 (de) * | 2008-04-21 | 2009-10-28 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines elektrischen Leiters |
EP2276150A1 (de) * | 2009-07-15 | 2011-01-19 | Frank, Gabriele | Elektromechanischer Antrieb zum Erzeugen einer translatorischen Bewegung |
Families Citing this family (24)
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US20060108880A1 (en) * | 2004-11-24 | 2006-05-25 | Lg Electronics Inc. | Linear compressor |
US7538457B2 (en) * | 2006-01-27 | 2009-05-26 | General Motors Corporation | Electric motor assemblies with coolant flow for concentrated windings |
WO2007109749A2 (en) * | 2006-03-21 | 2007-09-27 | Wyeth | Methods for preventing and treating amyloidogenic diseases |
WO2008141467A1 (de) * | 2007-05-18 | 2008-11-27 | Abb Research Ltd | Verfahren zum fixieren von wicklungsstäben in nuten elektrischer maschinen oder von generatoren |
US7859146B2 (en) * | 2008-09-22 | 2010-12-28 | Hamilton Sundstrand Corporation | End winding cooling |
US20100090549A1 (en) * | 2008-10-10 | 2010-04-15 | General Electric Company | Thermal management in a fault tolerant permanent magnet machine |
US20100090557A1 (en) * | 2008-10-10 | 2010-04-15 | General Electric Company | Fault tolerant permanent magnet machine |
CN101814797A (zh) * | 2010-05-24 | 2010-08-25 | 哈尔滨理工大学 | 高速永磁电机定子冷却系统 |
US8466589B2 (en) * | 2010-09-23 | 2013-06-18 | General Electric Company | Stator and method of assembly |
EP2434617A1 (de) * | 2010-09-24 | 2012-03-28 | Siemens Aktiengesellschaft | Generator für eine elektrische Maschine |
US8456048B2 (en) * | 2010-09-29 | 2013-06-04 | General Electric Company | Cooling structure for a segmented stator assembly |
US8508085B2 (en) * | 2010-10-04 | 2013-08-13 | Remy Technologies, Llc | Internal cooling of stator assembly in an electric machine |
US9729020B2 (en) * | 2011-03-22 | 2017-08-08 | Hamilton Sundstrand Corporation | Motor stator having channels used for cooling and method of providing the channels |
JP5331160B2 (ja) * | 2011-05-18 | 2013-10-30 | トヨタ自動車株式会社 | 回転電機のコイル固定部材、および、回転電機 |
WO2013171130A1 (en) * | 2012-05-16 | 2013-11-21 | Alstom Technology Ltd | Electric machine and method for rewinding it |
WO2014039155A2 (en) | 2012-09-06 | 2014-03-13 | Carrier Corporation | Motor rotor and air gap cooling |
EP2933901B1 (de) * | 2014-04-15 | 2016-10-26 | Siemens Aktiengesellschaft | Stator einer elektrischen Maschine und dessen Herstellung |
DE102014216148A1 (de) * | 2014-08-14 | 2016-02-18 | Wobben Properties Gmbh | Synchrongenerator, insbesondere vielpoliger Synchron-Ringgenerator einer getriebelosen Windenergieanlage, und Windenergieanlage mit selbigem |
US11258322B2 (en) * | 2018-12-20 | 2022-02-22 | Teco-Westinghouse Motor Company | High speed induction machine |
CN109936227B (zh) * | 2019-04-11 | 2020-07-10 | 浙江大学 | 风力发电机 |
CN110417141B (zh) * | 2019-07-22 | 2020-10-27 | 浙江大学 | 定子及包括其的电机 |
JP7262623B2 (ja) * | 2020-01-21 | 2023-04-21 | 三菱電機株式会社 | 固定子およびこれを用いた回転電機 |
EP4096070A4 (de) * | 2020-01-21 | 2023-01-18 | Mitsubishi Electric Corporation | Stator und rotierende elektrische maschine damit |
DE102022208047A1 (de) * | 2022-08-03 | 2024-02-08 | Magna powertrain gmbh & co kg | Elektrische Maschine |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE445936C (de) * | 1922-02-14 | 1927-06-21 | Siemens Schuckertwerke G M B H | Anordnung zur Kuehlung von in Nuten eingebetteten Wicklungen elektrischer Maschinen |
DE448803C (de) * | 1924-08-07 | 1927-08-24 | Bbc Brown Boveri & Cie | Einrichtung zur Kuehlung elektrischer Maschinen und Apparate mittels eines im Innern der Maschine oder des Apparats nahe den zu kuehlenden Stellen expandierenden, gasfoermigen Kuehlmittels |
DE964161C (de) * | 1952-05-22 | 1957-05-16 | Siemens Ag | Elektrische Maschine mit axialer Nutenbelueftung |
GB1135242A (en) * | 1965-09-13 | 1968-12-04 | Ass Elect Ind | Improvements in or relating to packing means for conductors in stator slots of dynamo-electric machines |
US6177747B1 (en) * | 1998-11-02 | 2001-01-23 | Denso Corporation | Vehicle AC generator and method of manufacturing the same |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2695368A (en) * | 1953-01-27 | 1954-11-23 | Gen Electric | Dynamoelectric machine stator winding with fluid-cooling passages in conductor bars |
CH357797A (de) * | 1958-03-01 | 1961-10-31 | Oerlikon Maschf | Statorwicklung für elektrische Maschinen |
US4028569A (en) * | 1975-06-16 | 1977-06-07 | Westinghouse Electric Corporation | Ventilation system for dynamoelectric machines |
ATE37970T1 (de) * | 1984-08-13 | 1988-10-15 | Bbc Brown Boveri & Cie | Elektrische maschine mit indirekt gekuehlter statorwicklung. |
CH686327A5 (de) * | 1993-08-17 | 1996-02-29 | Abb Management Ag | Gasgekuehlte elektrische Maschine. |
GB2289992B (en) | 1994-05-24 | 1998-05-20 | Gec Alsthom Ltd | Improvements in or relating to cooling arrangements in rotating electrical machines |
JPH08116638A (ja) * | 1994-10-18 | 1996-05-07 | Toshiba Corp | 回転電機の円筒形回転子 |
DE19621058A1 (de) | 1996-05-24 | 1997-11-27 | Siemens Ag | Wicklung mit direkter Kühlung |
DE19742900A1 (de) * | 1997-09-29 | 1999-04-01 | Asea Brown Boveri | Nutverschlußanordnung |
SE513555C2 (sv) * | 1997-11-27 | 2000-10-02 | Abb Ab | Förfarande för applicering av ett rörorgan i ett utrymme i en roterande elektrisk maskin och roterande elektrisk maskin enligt förfarandet |
JPH11355992A (ja) * | 1998-06-04 | 1999-12-24 | Mitsubishi Electric Corp | 回転電機 |
US6268668B1 (en) * | 2000-01-03 | 2001-07-31 | General Electric Co. | Gas cooled generator stator structure and method for impingement cooling of generator stator coil |
EP1251624B1 (de) * | 2001-04-20 | 2009-01-21 | Converteam Ltd | Kühlung von Luftspaltelektrischermaschinewicklungen |
-
2002
- 2002-09-23 DE DE10244202A patent/DE10244202A1/de not_active Withdrawn
-
2003
- 2003-08-11 AT AT03797132T patent/ATE463071T1/de active
- 2003-08-11 DE DE50312572T patent/DE50312572D1/de not_active Expired - Lifetime
- 2003-08-11 AU AU2003249829A patent/AU2003249829A1/en not_active Abandoned
- 2003-08-11 WO PCT/CH2003/000540 patent/WO2004027960A1/de not_active Application Discontinuation
- 2003-08-11 BR BR0314703-7A patent/BR0314703A/pt not_active IP Right Cessation
- 2003-08-11 CN CNB038226537A patent/CN1320734C/zh not_active Expired - Fee Related
- 2003-08-11 EP EP03797132A patent/EP1543603B1/de not_active Expired - Lifetime
- 2003-08-11 ES ES03797132T patent/ES2343795T3/es not_active Expired - Lifetime
- 2003-08-11 CA CA2499641A patent/CA2499641C/en not_active Expired - Fee Related
-
2005
- 2005-03-17 US US11/081,964 patent/US7242119B2/en not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE445936C (de) * | 1922-02-14 | 1927-06-21 | Siemens Schuckertwerke G M B H | Anordnung zur Kuehlung von in Nuten eingebetteten Wicklungen elektrischer Maschinen |
DE448803C (de) * | 1924-08-07 | 1927-08-24 | Bbc Brown Boveri & Cie | Einrichtung zur Kuehlung elektrischer Maschinen und Apparate mittels eines im Innern der Maschine oder des Apparats nahe den zu kuehlenden Stellen expandierenden, gasfoermigen Kuehlmittels |
DE964161C (de) * | 1952-05-22 | 1957-05-16 | Siemens Ag | Elektrische Maschine mit axialer Nutenbelueftung |
GB1135242A (en) * | 1965-09-13 | 1968-12-04 | Ass Elect Ind | Improvements in or relating to packing means for conductors in stator slots of dynamo-electric machines |
US6177747B1 (en) * | 1998-11-02 | 2001-01-23 | Denso Corporation | Vehicle AC generator and method of manufacturing the same |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008016758A1 (de) | 2008-03-31 | 2009-10-01 | Alstom Technology Ltd. | Stator für eine elektrische Maschine sowie elektrische Maschine mit einem solchen Stator |
EP2112745A1 (de) * | 2008-04-21 | 2009-10-28 | Siemens Aktiengesellschaft | Verfahren zur Kühlung eines elektrischen Leiters |
EP2276150A1 (de) * | 2009-07-15 | 2011-01-19 | Frank, Gabriele | Elektromechanischer Antrieb zum Erzeugen einer translatorischen Bewegung |
Also Published As
Publication number | Publication date |
---|---|
CA2499641C (en) | 2012-02-28 |
CN1320734C (zh) | 2007-06-06 |
AU2003249829A1 (en) | 2004-04-08 |
CN1685588A (zh) | 2005-10-19 |
DE50312572D1 (de) | 2010-05-12 |
CA2499641A1 (en) | 2004-04-01 |
EP1543603B1 (de) | 2010-03-31 |
US20050200212A1 (en) | 2005-09-15 |
DE10244202A1 (de) | 2004-03-25 |
ES2343795T3 (es) | 2010-08-10 |
EP1543603A1 (de) | 2005-06-22 |
US7242119B2 (en) | 2007-07-10 |
ATE463071T1 (de) | 2010-04-15 |
BR0314703A (pt) | 2005-07-26 |
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