GB1472263A - Dynamo electric machines - Google Patents

Dynamo electric machines

Info

Publication number
GB1472263A
GB1472263A GB4254274A GB4254274A GB1472263A GB 1472263 A GB1472263 A GB 1472263A GB 4254274 A GB4254274 A GB 4254274A GB 4254274 A GB4254274 A GB 4254274A GB 1472263 A GB1472263 A GB 1472263A
Authority
GB
United Kingdom
Prior art keywords
wedges
slot
members
recesses
electrically conductive
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
Application number
GB4254274A
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.)
English Electric Co Ltd
Original Assignee
English Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB4254274A priority Critical patent/GB1472263A/en
Priority to AU85183/75A priority patent/AU488067B2/en
Publication of GB1472263A publication Critical patent/GB1472263A/en
Expired legal-status Critical Current

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
    • H02K3/487—Slot-closing devices
    • 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
    • H02K3/16—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots for auxiliary purposes, e.g. damping or commutating

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)

Abstract

1472263 Securing rotor windings ENGLISH ELECTRIC CO Ltd 11 Sept 1975 [1 Oct 1974] 42524/74 Heading H2A The electrical conductors of the winding of the rotor of a dynamo-electric machine are held in position in axially extending slots in the rotor core by the provision in each slot of a plurality of electrically conductive wedges 6 disposed end-to-end in the slot, immediately adjacent wedges in each slot having their adjacent ends shaped to define opposed recesses, and a respective electrically conductive member 12 is located between each said pair of immediately adjacent wedges 6 so as to be accommodated partly within each of the corresponding opposed recesses and to be pressed into contact with co-operating surfaces of the corresponding pair of wedges, at least during operation of the machine, to provide an electrically conductive path between them. The members 12 prevent currents flowing between the ends of wedges 6 and the rotor teeth 9 under unbalanced loading conditions and stator winding faults in an A.C. generator. Members 12 may be pressed into engagement with surfaces 11 during fitting of the wedges 6 or due to centrifugal action. The recesses may be formed by chamfering radially inwardly facing surfaces 11 of wedges 6 to form triangular spaces extending transversely of the slots and defined between surfaces 11 and electrical insulation 8 between wedges 6 and the radially outer conductors (4) in each slot, members 12 being of triangular or circular, Fig. 6 (not shown), cross-section. In alternative forms, Figs. 4, 5, 7 (not shown) the wedge recesses are rectangular or triangular grooves and members 12 are of rectangular or circular section.
GB4254274A 1974-10-01 1974-10-01 Dynamo electric machines Expired GB1472263A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4254274A GB1472263A (en) 1974-10-01 1974-10-01 Dynamo electric machines
AU85183/75A AU488067B2 (en) 1974-10-01 1975-09-25 Improvements in or relating to dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4254274A GB1472263A (en) 1974-10-01 1974-10-01 Dynamo electric machines

Publications (1)

Publication Number Publication Date
GB1472263A true GB1472263A (en) 1977-05-04

Family

ID=10424883

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4254274A Expired GB1472263A (en) 1974-10-01 1974-10-01 Dynamo electric machines

Country Status (1)

Country Link
GB (1) GB1472263A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307216A2 (en) * 1987-09-10 1989-03-15 Northern Engineering Industries Plc Electrical machines incorporating slot wedges
EP0459716A1 (en) * 1990-05-31 1991-12-04 General Electric Company Slot insulation for electrical machines
EP1361642A1 (en) * 2002-05-10 2003-11-12 ALSTOM (Switzerland) Ltd Rotor of a turbogenerator

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0307216A2 (en) * 1987-09-10 1989-03-15 Northern Engineering Industries Plc Electrical machines incorporating slot wedges
EP0307216A3 (en) * 1987-09-10 1989-11-23 Northern Engineering Industries Plc Electrical machines incorporating slot wedges
EP0459716A1 (en) * 1990-05-31 1991-12-04 General Electric Company Slot insulation for electrical machines
EP1361642A1 (en) * 2002-05-10 2003-11-12 ALSTOM (Switzerland) Ltd Rotor of a turbogenerator

Also Published As

Publication number Publication date
AU8518375A (en) 1977-03-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee