GB1343275A - Homopolar electrical machines - Google Patents

Homopolar electrical machines

Info

Publication number
GB1343275A
GB1343275A GB1343275DA GB1343275A GB 1343275 A GB1343275 A GB 1343275A GB 1343275D A GB1343275D A GB 1343275DA GB 1343275 A GB1343275 A GB 1343275A
Authority
GB
United Kingdom
Prior art keywords
coils
field coil
field
screening
screening coils
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
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.)
International Research and Development Co Ltd
Original Assignee
International Research and Development 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 International Research and Development Co Ltd filed Critical International Research and Development Co Ltd
Publication of GB1343275A publication Critical patent/GB1343275A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K31/00—Acyclic motors or generators, i.e. DC machines having drum or disc armatures with continuous current collectors

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Superconductive Dynamoelectric Machines (AREA)

Abstract

1343275 Homopolar machines INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 19 April 1971 [3 Nov 1969] 53842/69 Heading H2A To reduce the external field of a homopolar. machine having a super conducting field coil mounted coaxially with the rotor, a pair of superconducting screening coils are mounted on opposite sides of the field coil, the screening coils having a diameter at least as large as that of the field coil and being of opposite polarity. Fig. 1 shows a machine with a dream type rotor 10 in which the screening coils 15, 16 are the same diameter as the field coil 13. The fields B of the screening coils reinforce that (n) of the field coil adjacent the latter and oppose the field A externally of the screening coils. Where the rotor has field coils at opposite ends, screening coils of larger diameter are used as is the case with a machine having a disc type rotor 18, Fig. 2, in which the screening coils are shown at 22, 23.
GB1343275D 1969-11-03 1969-11-03 Homopolar electrical machines Expired GB1343275A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5384269 1969-11-03

Publications (1)

Publication Number Publication Date
GB1343275A true GB1343275A (en) 1974-01-10

Family

ID=10469155

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1343275D Expired GB1343275A (en) 1969-11-03 1969-11-03 Homopolar electrical machines

Country Status (1)

Country Link
GB (1) GB1343275A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481149A (en) * 1993-11-12 1996-01-02 Toyota Jidosha Kabushiki Kaisha Homopolar dynamoelectric machine
EP3128663A1 (en) * 2015-08-06 2017-02-08 Rolls-Royce plc Active screening for an electrical machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5481149A (en) * 1993-11-12 1996-01-02 Toyota Jidosha Kabushiki Kaisha Homopolar dynamoelectric machine
EP3128663A1 (en) * 2015-08-06 2017-02-08 Rolls-Royce plc Active screening for an electrical machine
US20170040881A1 (en) * 2015-08-06 2017-02-09 Rolls-Royce Plc Active screening for an electrical machine
US10680503B2 (en) * 2015-08-06 2020-06-09 Rolls-Royce Plc Active screening for an electrical machine

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee