WO2011032550A1 - Kurzschlussläufer und verfahren zum herstellen eines solchen kurzschlussläufers - Google Patents
Kurzschlussläufer und verfahren zum herstellen eines solchen kurzschlussläufers Download PDFInfo
- Publication number
- WO2011032550A1 WO2011032550A1 PCT/DE2010/050046 DE2010050046W WO2011032550A1 WO 2011032550 A1 WO2011032550 A1 WO 2011032550A1 DE 2010050046 W DE2010050046 W DE 2010050046W WO 2011032550 A1 WO2011032550 A1 WO 2011032550A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- rotor
- elements
- passages
- solid
- squirrel
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
- H02K15/023—Cage rotors
-
- 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
- H02K17/168—Asynchronous induction motors having rotors with internally short-circuited windings, e.g. cage rotors having single-cage rotors
-
- 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
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49002—Electrical device making
- Y10T29/49009—Dynamoelectric machine
- Y10T29/49012—Rotor
Definitions
- the invention relates to a squirrel cage rotor according to the preamble of claim 1 and a method for producing such a squirrel cage rotor.
- Laminated, so constructed from many individual ferromagnetic sheets rotors for electric motors are known.
- solid rotor Various designs of a solid rotor are in the art realized and in use, such as: smooth solid runners, solid runners with slots, solid runner with outer sleeve, solid rotor with shorting cage, etc.
- the electric motor may typically comprise a ferromagnetic rotor shaft having a solid rotor section, a plurality of electrically conductive rod-shaped conductors and electrically conductive end rings.
- a squirrel cage rotor of the type mentioned in the introduction is known from DE 7000062 U. In this squirrel cage rotor are several conical conductor bars (rod elements) by shrinking in axial through a solid rotor section of
- the conductor bars are firmly connected to the solid rotor section.
- the conductor bars generally consist of a material other than the solid rotor section and therefore have different thermal expansion properties, the entire squirrel cage rotor can warp, which can lead to imbalances or even cracks.
- the invention has for its object to provide a squirrel cage, which has a lower distortion during operation.
- the invention is also based on the object, a method for producing such
- a squirrel-cage rotor for an electric motor has a rotor shaft which has a rotor made of ferromagnetic material
- a solid rotor section having a plurality of through passages extending in an axial direction of the rotor shaft distributed around a circumference of the solid rotor section has a plurality of electrically conductive bar elements each in one of the through passages are received, so that the respective rod elements extend in Axiauightung of the rotor shaft through the solid rotor section, wherein the rod elements each have a first longitudinal end and a first longitudinal end facing away from the second longitudinal end, and two electrically conductive
- End elements of which a first end member electrically connects the first longitudinal ends of the rod members with each other and a second end member electrically connects the second longitudinal ends of the rod members with each other, so that a short circuit cage is formed by rod members and end members.
- the squirrel-cage rotor according to the invention is characterized in that the respective bar elements are received in the through-passages such that when the length of the bar elements and / or the
- the solid rotor section is integrally formed on the rotor shaft, so that the rotor shaft and solid rotor section are made of the same material.
- This embodiment of the invention has the advantage that no frictional and / or positive connection between rotor shaft and Massifviererabites needs to be made, but both are produced from one piece, for example by turning. This reduces the manufacturing costs and possible problem areas of the squirrel cage rotor.
- the respective rod elements can thus in the
- Massivnrabites are displaced.
- Such support of the rod elements in the passageways may e.g. by a slight interference fit, a transition fit, a clearance fit, or even one over one
- the respective bar elements are unclamped in the respective bar elements
- the rod elements are on the one hand unrestrained relative to the
- the bar elements are included Increasing speed increasingly pressed against a radially outer portion of their respective passage passage, so that vibrations of the
- Rod elements reduced and the magnetic flux can be improved. This reduces the heating of the solid section and the rod elements.
- At least one of the first and the second longitudinal end of each rod member is connected to the associated end member so that upon a change in length of the respective
- the respective longitudinal end is, on the one hand, held firmly enough on the end element, such as e.g. clamped or e.g. coupled by means of a helical compression spring combination that the rod element can not inadvertently release from the passage passages during operation of the squirrel cage and always the maximum to be transmitted induction current (eddy current) is transferable via this connection.
- the rod element can not inadvertently release from the passage passages during operation of the squirrel cage and always the maximum to be transmitted induction current (eddy current) is transferable via this connection.
- eddy current eddy current
- Massiv constructiverabitess allows the respective longitudinal end displaced by overcoming a certain force in the axial direction relative to the end member to compensate for the change in length.
- the end elements may have blind recesses and / or through-recesses for receiving the longitudinal ends of the rod elements.
- Sackauslangept is to ensure that sufficient clearance is present between a bottom portion of the respective blind recess and the respective longitudinal end, so that the longitudinal extent of
- Bar element is receivable.
- both longitudinal ends can be accommodated axially displaceably in both end elements as described above.
- the transition fit ensures, on the one hand, that the relevant longitudinal end is held firmly enough on the end element, so that the rod element does not inadvertently escape from the respective one during operation of the squirrel cage rotor
- Induction current (eddy current) is transferable via this connection, and on the other hand, that the respective longitudinal end at a e.g.
- the end elements are each formed annularly, each end element is formed at least in two parts, and wherein the at least two parts of each end member are electrically connected together.
- a squirrel-cage rotor is provided with a solid-rotor section having a short-circuit cage
- the squirrel-cage rotor has a ferromagnetic rotor shaft with the solid mass portion integrally formed thereon, a plurality of electrically conductive rod elements (rod-shaped conductors) and electrically conductive, single or multi-part end elements (preferably end rings), and wherein the
- Bar elements are introduced in drilled or eroded holes in the solid rotor section of the rotor shaft.
- the rod elements may have a round, oval, square or any other profile cross-section.
- the rod elements are loosely or firmly connected to the one- or multi-part end elements (preferably end rings).
- the rod elements are loosely formed integrally with the ferromagnetic rotor shaft
- Bar elements and respective passage passages are ensured with good accuracy and on the other hand, the transition of the rod elements are ensured in the end elements with good positional accuracy.
- the passage passages are in the solid rotor section in each case by a cutting and / or an abrasive machining in the
- Solid rotor section i. by the preferably solid wall or
- FIG. 1 shows a schematic partially sectioned view of a
- Short circuit rotor according to an embodiment of the invention.
- FIG. 2 shows a cross-sectional view of a solid rotor section of FIG
- a squirrel-cage rotor 1 As shown in FIG. 1 and FIG. 2, a squirrel-cage rotor 1 according to the invention (not completely shown) comprises a rotor shaft 10 formed by ferromagnetic material, which has a solid-diameter section 1 1 integrally formed thereon in the form of a cylindrical diameter enlargement has, a plurality of electrically conductive rod elements 20 with a circular cross section of constant diameter and two electrically conductive end elements 30 and 40 in the form of two each one-piece end rings.
- the solid rotor section 1 1 has a plurality of passage passages 12 extending around an extent of the solid rotor section 11 in an axial direction AR of the rotor shaft 10.
- the rod elements 20 are each in one of the passage passages 12
- the respective rod elements 20 extend in the axial direction AR of the rotor shaft 10 through the solid rotor section 1 1, wherein the rod elements 20 each have a first longitudinal end 20a and the first
- a first (in Fig.1 left) end member 30 of the two end members 30, 40 electrically connects the first longitudinal ends 20a of the rod members 20 together.
- a second (in Fig. 1 right) end member 40 of the two end members 30, 40 connects the second longitudinal ends 20 b of the rod members 20 electrically
- the rod elements 20 and the two end elements 30, 40 thus form a short-circuit cage.
- the respective bar members 20 are received in the passageways 12 such that at e.g. Warming caused change in length of the rod members 20 and / or the solid rotor section 1 1, a relative movement in the axial direction AR of the rotor shaft 10 between the solid rotor section 1 1 and recorded in the passage passages 12 each
- the respective rod elements 20 are received unclamped in the passageways 12, so that a unrestricted relative movement in axial direction AR of the rotor shaft 10 between the solid rotor section 1 1 and the recorded in the passage passages 12 respective rod elements 20 is made possible. That is, to displace or displace the rod elements 20 in the passage passages 12 is substantially no clamping force to overcome.
- a clearance fit i. a fit in which both parts of the same nominal size but have such different tolerance ranges that the smallest inner diameter dimension of the through passage 12 is always greater than the largest outer diameter dimension of the rod member 20 is formed.
- Each end member 30, 40 has a plurality of around a circumference of
- each end element 30, 40 distributed around arranged through holes 31 and 41, which correspond in their circular graduation to that of the passage passages 12. Furthermore, each end element 30, 40 has a central one
- the first end element 30 is fitted with its central receiving bore 32 on a first longitudinal end 10a of the rotor shaft 10 and via a
- Inner diameter of the through hole 31 in each case is smaller than the smallest outer diameter of the rod member 20 is formed.
- the first longitudinal end 20 a of each rod member 20 is additionally secured via a not shown from radially outside of the end member 30 radially inwardly of its engaging in the through hole 31 grub screw against loosening from the through hole 31.
- the second end member 40 is fitted with its central receiving bore 42 on a second longitudinal end 10b of the rotor shaft 10 and via a
- Press fit tends to transition fit, i. a fit, with a slight excess of the outer diameter of the rod member 20 relative to the inner diameter of the through hole 41, is formed.
- each rod element 20 is not additionally secured by a grub screw.
- each bar member 20 is connected to the associated second end member 40 so that, at e.g.
- transmitting electrical current dimensioned electrical connection is a relative movement in the axial direction AR of the rotor shaft 10 between the second longitudinal end 20 b and the second end member 40 is made possible.
- the second longitudinal ends 20b of the rod elements 20 can overcome overcoming a certain force (here one through the Transient fit generated slight clamping force) in the axial direction AR relative to the second end member 40 to shift, so that the change in length
- the passage passages 12 in the solid rotor section 1 1 each by a machining and / or an abrasive machining, in particular by deep hole drilling (eg by means of horizontal boring mill) and / or spark erosion, introduced into the solid rotor section 1 1.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
- Induction Machinery (AREA)
Abstract
Description
Claims
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP10749769A EP2478624A1 (de) | 2009-09-15 | 2010-07-15 | Kurzschlussläufer und verfahren zum herstellen eines solchen kurzschlussläufers |
| CN201080051668.9A CN102598489B (zh) | 2009-09-15 | 2010-07-15 | 短路转子和用于制造这样的短路转子的方法 |
| RU2012114774/07A RU2012114774A (ru) | 2009-09-15 | 2010-07-15 | Короткозамкнутый ротор и способ изготовления короткозамкнутого ротора |
| JP2012529122A JP5671038B2 (ja) | 2009-09-15 | 2010-07-15 | かご形回転子と当該かご形回転子の製造方法 |
| US13/496,154 US20120262024A1 (en) | 2009-09-15 | 2010-07-15 | Squirrel-Cage Rotor And Method For Producing Such A Squirrel-Cage Rotor |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102009041564.5 | 2009-09-15 | ||
| DE102009041564A DE102009041564A1 (de) | 2009-09-15 | 2009-09-15 | Kurzschlussläufer und Verfahren zum Herstellen eines solchen Kurzschlussläufers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011032550A1 true WO2011032550A1 (de) | 2011-03-24 |
Family
ID=42940847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2010/050046 Ceased WO2011032550A1 (de) | 2009-09-15 | 2010-07-15 | Kurzschlussläufer und verfahren zum herstellen eines solchen kurzschlussläufers |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US20120262024A1 (de) |
| EP (1) | EP2478624A1 (de) |
| JP (1) | JP5671038B2 (de) |
| CN (1) | CN102598489B (de) |
| DE (1) | DE102009041564A1 (de) |
| RU (1) | RU2012114774A (de) |
| WO (1) | WO2011032550A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140097711A1 (en) * | 2012-10-05 | 2014-04-10 | Larry Kubes | One piece rotor hub/shaft for an electric machine and method |
| EP3400374B1 (de) * | 2016-02-12 | 2020-02-26 | Siemens Aktiengesellschaft | Gasturbinen-strang mit startmotor |
| CN106655573A (zh) * | 2016-12-16 | 2017-05-10 | 卧龙电气集团股份有限公司 | 大功率高转速异步电机用实心转子 |
| FR3090234B1 (fr) | 2018-12-14 | 2021-11-12 | Ge Energy Power Conversion Technology Ltd | Rotor à arbre non traversant et machine électrique tournante associée |
| FR3090232B1 (fr) | 2018-12-14 | 2020-12-18 | Ge Energy Power Conversion Technology Ltd | Rotor pour machine electrique tournante asynchrone a cage d’ecureuil et machine tournante associee |
| CN113241919B (zh) * | 2021-05-27 | 2022-07-22 | 江苏大学 | 一种无轴承复合转子笼型异步电机 |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB882513A (en) | 1959-08-19 | 1961-11-15 | Max Hany | Improvements in or relating to squirrel-cage induction motors |
| US3194996A (en) * | 1963-03-19 | 1965-07-13 | Westinghouse Electric Corp | Induction motor rotor |
| DE7000062U (de) | 1970-01-02 | 1970-04-30 | Mueller Georg Kugellager | Massiver kurzschlusslaeufer. |
| DE1613208A1 (de) * | 1966-03-23 | 1970-05-21 | Oerlikon Maschf | Rotor einer Asynchronmaschine mit gegen Zutritt von unter Druck stehenden Gasen oderFluessigkeiten geschuetzter Kaefigwicklung |
| US3517238A (en) | 1968-04-04 | 1970-06-23 | Gen Electric | Squirrel cage rotor and method of building the same |
| CH683957A5 (de) * | 1992-05-12 | 1994-06-15 | Industrieorientierte Forsch | Käfigläufer mit geschlitzten Leiterstäben. |
| EP0608675A1 (de) * | 1993-01-26 | 1994-08-03 | Gec Alsthom Acec Energie S.A. | Elektrischer Motor mit hoher Drehgeschwindigkeit und hoher Leistung |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE154116C (de) * | ||||
| US3246188A (en) * | 1964-11-09 | 1966-04-12 | Gen Electric | Amortisseur winding for synchronous machines |
| DE2719326A1 (de) * | 1977-04-27 | 1978-11-02 | Siemens Ag | Elektrische asynchronmaschine |
| JPS58201552A (ja) * | 1982-05-18 | 1983-11-24 | Hitachi Ltd | 回転電機の回転子 |
| US4453101A (en) * | 1983-09-27 | 1984-06-05 | General Electric Company | Amortisseur bar with improved interface between free conductor bars and amortisseur ring |
| JPS631352A (ja) * | 1986-06-20 | 1988-01-06 | Fuji Electric Co Ltd | かご形回転子 |
| JPH03261354A (ja) * | 1990-03-07 | 1991-11-21 | Yaskawa Electric Corp | 誘導電動機のソリッドロータの製造方法 |
| JPH05207714A (ja) * | 1992-01-27 | 1993-08-13 | Matsushita Seiko Co Ltd | 誘導電動機の回転子 |
| JPH06245421A (ja) * | 1993-02-15 | 1994-09-02 | Toyo Electric Mfg Co Ltd | 籠形誘導機の回転子の冷却装置 |
| DE19706851A1 (de) * | 1997-02-21 | 1998-09-03 | Bosch Gmbh Robert | Läufer und Verfahren zur Herstellung eines Läufers |
| DE10345637A1 (de) * | 2003-09-29 | 2005-05-25 | Siemens Ag | Kurzschlussläufer |
| US20070151055A1 (en) * | 2006-01-04 | 2007-07-05 | 766089 Alberta Ltd. | Pipeline pig brush and brush assembly |
| US7336013B2 (en) * | 2004-09-30 | 2008-02-26 | Reliance Electric Technologies, Llc | High mechanical strength electrical connection system and method |
-
2009
- 2009-09-15 DE DE102009041564A patent/DE102009041564A1/de active Pending
-
2010
- 2010-07-15 WO PCT/DE2010/050046 patent/WO2011032550A1/de not_active Ceased
- 2010-07-15 CN CN201080051668.9A patent/CN102598489B/zh not_active Expired - Fee Related
- 2010-07-15 EP EP10749769A patent/EP2478624A1/de not_active Withdrawn
- 2010-07-15 US US13/496,154 patent/US20120262024A1/en not_active Abandoned
- 2010-07-15 RU RU2012114774/07A patent/RU2012114774A/ru not_active Application Discontinuation
- 2010-07-15 JP JP2012529122A patent/JP5671038B2/ja not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB882513A (en) | 1959-08-19 | 1961-11-15 | Max Hany | Improvements in or relating to squirrel-cage induction motors |
| US3194996A (en) * | 1963-03-19 | 1965-07-13 | Westinghouse Electric Corp | Induction motor rotor |
| DE1613208A1 (de) * | 1966-03-23 | 1970-05-21 | Oerlikon Maschf | Rotor einer Asynchronmaschine mit gegen Zutritt von unter Druck stehenden Gasen oderFluessigkeiten geschuetzter Kaefigwicklung |
| US3517238A (en) | 1968-04-04 | 1970-06-23 | Gen Electric | Squirrel cage rotor and method of building the same |
| DE7000062U (de) | 1970-01-02 | 1970-04-30 | Mueller Georg Kugellager | Massiver kurzschlusslaeufer. |
| CH683957A5 (de) * | 1992-05-12 | 1994-06-15 | Industrieorientierte Forsch | Käfigläufer mit geschlitzten Leiterstäben. |
| EP0608675A1 (de) * | 1993-01-26 | 1994-08-03 | Gec Alsthom Acec Energie S.A. | Elektrischer Motor mit hoher Drehgeschwindigkeit und hoher Leistung |
| EP0608675B1 (de) | 1993-01-26 | 1995-09-13 | Gec Alsthom Acec Energie S.A. | Elektrischer Motor mit hoher Drehgeschwindigkeit und hoher Leistung |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102009041564A1 (de) | 2011-03-24 |
| CN102598489A (zh) | 2012-07-18 |
| CN102598489B (zh) | 2014-12-17 |
| JP5671038B2 (ja) | 2015-02-18 |
| EP2478624A1 (de) | 2012-07-25 |
| US20120262024A1 (en) | 2012-10-18 |
| RU2012114774A (ru) | 2013-10-27 |
| JP2013504997A (ja) | 2013-02-07 |
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