US3280244A - Transposed conductor bar - Google Patents

Transposed conductor bar Download PDF

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Publication number
US3280244A
US3280244A US295762A US29576263A US3280244A US 3280244 A US3280244 A US 3280244A US 295762 A US295762 A US 295762A US 29576263 A US29576263 A US 29576263A US 3280244 A US3280244 A US 3280244A
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US
United States
Prior art keywords
planes
transposed
conductor bar
strands
conductor
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.)
Expired - Lifetime
Application number
US295762A
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English (en)
Inventor
Pannen Egon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Licentia Patent Verwaltungs GmbH
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Licentia Patent Verwaltungs GmbH
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Publication date
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Publication of US3280244A publication Critical patent/US3280244A/en
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Expired - Lifetime legal-status Critical Current

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    • 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
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
    • H02K3/14—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots with transposed conductors, e.g. twisted conductors

Definitions

  • a basic object of the present invention to provide an arrangement in which the above-mentioned drawback is avoided, i.e., an arrangement in which the flow of an eddy-current between the two independently transposed bars arranged in wide slots is avoided.
  • the present invention resides in an arrangement wherein a winding conductor bar which is constituted by a plurality of individual conduetors or strands, and which is transposed in any desired manner, has four planes, of which the conductors of the second and third planes are transposed in the usual manner while the conductors of the iirst and fourth planes are transposed about the second and third plane-s.
  • Such a four-plane bar incorporating, for example, the conventional 360 transposition for the second and third and for the first and fourth planes, has the following advantage as compared to a two-plane bar: thanks to the fact that the width of the individual conductors is halved, the additional losses (eddy currents) which are caused by the radial leakage field in each individual conductor itself are reduced to one quarter. Consequently, the additional losses produced in the bar as a whole are only half as large as compared to those in a conventional twoplane conductor.
  • the bar instead of being a twoplane bar is a four-plane bar, in consequence of which the width of the individual conductors is halved.
  • the four-plane conductor bar according to the ICC present invention can be made by "simpliiied manufacturing techniques inasmuch as it does not consist of two disconnected halves but, due to the interconnection and combination of all four planes, of a single cohesive structure.
  • the conductor bar according to the present invention offers particular advantages when used in conjunction with the conventional 540-transposition, because such an arrangement completely cancels the effect of the cross eld in the slots and the front leakage fields of any direction and magnitude. In such a conductor bar, all of the eddy-currents which are induced by the front leakage field and the cross eld are completely cancelled both between the individual strands as well as between the four planes.
  • FIGURE 1 is a schematic longitudinal view of a conductor bar according to the instant invention.
  • FIGURES 2 and 3 are sectional views taken on lines 2-2 and 3 3, respectively, of FIGURE 1.
  • FIGURE 4 is a perspective view of a conductor bar portion according to the present invention.
  • the conductor bar consists of four planes I, II, III, and IV each having four individual conductors or strands.
  • the two outer planes I and IV consist of four strands a, b, c, d, and e, f, g, h, respectively, while the two inner planes II and III consist of four strands 1, 2, 3, 4, and 5, 6, 7, 8, respectively.
  • the conductor bar of the present invention constittes a single, connected structural entity. Furthermore, due to the fact that the conductors of the two outer planes are transposed about the two inner planes, the losses in the strands caused by the radial iield and the front leakage field are considerably reduced.
  • winding arrangement while applicable to alternating current motors and generators in general, is particularly suited for use with turbo-generators.
  • FIGURE 4 shows the structural arrangement of the above-described conductor bar.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)
  • Coils Of Transformers For General Uses (AREA)
US295762A 1962-07-18 1963-07-17 Transposed conductor bar Expired - Lifetime US3280244A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0042482 1962-07-18

Publications (1)

Publication Number Publication Date
US3280244A true US3280244A (en) 1966-10-18

Family

ID=7269894

Family Applications (1)

Application Number Title Priority Date Filing Date
US295762A Expired - Lifetime US3280244A (en) 1962-07-18 1963-07-17 Transposed conductor bar

Country Status (3)

Country Link
US (1) US3280244A (de)
CH (1) CH412089A (de)
GB (1) GB966178A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647932A (en) * 1970-12-11 1972-03-07 Westinghouse Electric Corp Transposed conductor for dynamoelectric machines
US3825783A (en) * 1971-09-03 1974-07-23 Kraftwerk Union Ag Conductor bar for electrical machines
US3837072A (en) * 1972-12-08 1974-09-24 Asea Ab Method of manufacturing a coherent roebel bar coil
US3976904A (en) * 1971-02-12 1976-08-24 Siemens Aktiengesellschaft Transposed bar for electric machines
US4128779A (en) * 1977-04-05 1978-12-05 Westinghouse Electric Corp. Stranded conductor for dynamoelectric machines
DE2811249A1 (de) * 1978-03-15 1979-09-20 Kraftwerk Union Ag Mehrebenen-leiterstab fuer elektrische maschinen, insbesondere fuer turbogeneratoren
US4262163A (en) * 1979-10-22 1981-04-14 General Electric Company Busway phase transposition assembly
US4384227A (en) * 1980-06-09 1983-05-17 Mitsubishi Denki Kabushiki Kaisha Armature winding for a dynamoelectric machine
US4395693A (en) * 1979-10-25 1983-07-26 Teldix Gmbh Electrical winding for a transformer, a choke coil or the like
US5270598A (en) * 1992-04-15 1993-12-14 Westinghouse Electric Corp. Solid connector for stator phase winding and method of assembly
US5323079A (en) * 1992-04-15 1994-06-21 Westinghouse Electric Corp. Half-coil configuration for stator
US20150114676A1 (en) * 2013-10-31 2015-04-30 Alstom Technology Ltd. Conductor bar with multi-strand conductor element

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19754943A1 (de) * 1997-12-11 1999-06-17 Asea Brown Boveri Wicklung für eine elektrische Maschine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821641A (en) * 1956-04-16 1958-01-28 Allis Chalmers Mfg Co Strand transposition
US2830208A (en) * 1957-03-06 1958-04-08 Allis Chalmers Mfg Co Stator coil transposition
US3118015A (en) * 1962-10-26 1964-01-14 Gen Electric Balanced transposition for stranded conductor with asymmetrically disposed strand ends
US3188377A (en) * 1962-06-08 1965-06-08 Gen Electric Armature bar transposition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2821641A (en) * 1956-04-16 1958-01-28 Allis Chalmers Mfg Co Strand transposition
US2830208A (en) * 1957-03-06 1958-04-08 Allis Chalmers Mfg Co Stator coil transposition
US3188377A (en) * 1962-06-08 1965-06-08 Gen Electric Armature bar transposition
US3118015A (en) * 1962-10-26 1964-01-14 Gen Electric Balanced transposition for stranded conductor with asymmetrically disposed strand ends

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3647932A (en) * 1970-12-11 1972-03-07 Westinghouse Electric Corp Transposed conductor for dynamoelectric machines
US3976904A (en) * 1971-02-12 1976-08-24 Siemens Aktiengesellschaft Transposed bar for electric machines
US3825783A (en) * 1971-09-03 1974-07-23 Kraftwerk Union Ag Conductor bar for electrical machines
US3837072A (en) * 1972-12-08 1974-09-24 Asea Ab Method of manufacturing a coherent roebel bar coil
US4128779A (en) * 1977-04-05 1978-12-05 Westinghouse Electric Corp. Stranded conductor for dynamoelectric machines
DE2811249A1 (de) * 1978-03-15 1979-09-20 Kraftwerk Union Ag Mehrebenen-leiterstab fuer elektrische maschinen, insbesondere fuer turbogeneratoren
US4262163A (en) * 1979-10-22 1981-04-14 General Electric Company Busway phase transposition assembly
US4395693A (en) * 1979-10-25 1983-07-26 Teldix Gmbh Electrical winding for a transformer, a choke coil or the like
US4384227A (en) * 1980-06-09 1983-05-17 Mitsubishi Denki Kabushiki Kaisha Armature winding for a dynamoelectric machine
US5270598A (en) * 1992-04-15 1993-12-14 Westinghouse Electric Corp. Solid connector for stator phase winding and method of assembly
US5323079A (en) * 1992-04-15 1994-06-21 Westinghouse Electric Corp. Half-coil configuration for stator
US20150114676A1 (en) * 2013-10-31 2015-04-30 Alstom Technology Ltd. Conductor bar with multi-strand conductor element

Also Published As

Publication number Publication date
GB966178A (en) 1964-08-06
CH412089A (de) 1966-04-30

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