GB1396309A - Electrical machines - Google Patents

Electrical machines

Info

Publication number
GB1396309A
GB1396309A GB1475771A GB1475771A GB1396309A GB 1396309 A GB1396309 A GB 1396309A GB 1475771 A GB1475771 A GB 1475771A GB 1475771 A GB1475771 A GB 1475771A GB 1396309 A GB1396309 A GB 1396309A
Authority
GB
United Kingdom
Prior art keywords
brush
division
ring
motor
temperature
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
GB1475771A
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
Priority to GB1475771A priority Critical patent/GB1396309A/en
Publication of GB1396309A publication Critical patent/GB1396309A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/34—Testing dynamo-electric machines
    • G01R31/343—Testing dynamo-electric machines in operation
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/24—Laminated contacts; Wire contacts, e.g. metallic brush, carbon fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R39/00—Rotary current collectors, distributors or interrupters
    • H01R39/02—Details for dynamo electric machines
    • H01R39/18—Contacts for co-operation with commutator or slip-ring, e.g. contact brush
    • H01R39/26—Solid sliding contacts, e.g. carbon brush
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
    • H02K13/003—Structural associations of slip-rings

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Motor Or Generator Current Collectors (AREA)

Abstract

1396309 Automatic control of temperature and force INTERNATIONAL RESEARCH & DEVELOPMENT CO Ltd 7 Aug 1972 [13 May 1971] 14757/71 Heading G3R [Also in Division H2] In a brushgear arrangement in a dynamoelectric machine, a motor 25 drives a jacking screw 22 via gearing 24 to advance a fibre brush 20 [Division H2] against a rotating slip-ring 21 as the brush wears away in use thereof, the motor being driven by a relay unit 26 and control circuit 30 in accordance with the temperature of the brush as sensed by a thermocouple 29. In an over-riding arrangement for controlling the relay unit 26, the brush 20 and an auxiliary, solid type, brush 27 running on an unused part of the slip-ring are both connected to a voltage control unit 28 whereby to sense the contact potential of the main brush 20, and to ensure that it does not go outside permitted limits. The brush position may also be controlled by sensing the contact pressure or contact friction (no details provided).
GB1475771A 1971-05-13 1971-05-13 Electrical machines Expired GB1396309A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1475771A GB1396309A (en) 1971-05-13 1971-05-13 Electrical machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1475771A GB1396309A (en) 1971-05-13 1971-05-13 Electrical machines

Publications (1)

Publication Number Publication Date
GB1396309A true GB1396309A (en) 1975-06-04

Family

ID=10046958

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1475771A Expired GB1396309A (en) 1971-05-13 1971-05-13 Electrical machines

Country Status (1)

Country Link
GB (1) GB1396309A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001521A1 (en) * 1977-09-28 1979-04-18 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Improvements relating to electrical sliding contact devices
FR2469813A1 (en) * 1979-11-08 1981-05-22 France Etat MULTI-FILAMENTARY BROOM SLIDING ELECTRIC CONTACT DEVICE
EP0099158A1 (en) * 1982-07-12 1984-01-25 Josephus Bernardus Michael Berings A device for controlling a brush-commutator assembly of an electric machine
EP3457150A1 (en) * 2017-09-13 2019-03-20 Mitsubishi Hitachi Power Systems, Ltd. Spark detecting apparatus and method for devices using electric sliding contact, spark reduction method for devices using electric sliding contact, and sliding error detecting apparatus and method for devices using electric sliding contact

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0001521A1 (en) * 1977-09-28 1979-04-18 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Improvements relating to electrical sliding contact devices
FR2469813A1 (en) * 1979-11-08 1981-05-22 France Etat MULTI-FILAMENTARY BROOM SLIDING ELECTRIC CONTACT DEVICE
EP0029375A1 (en) * 1979-11-08 1981-05-27 ETAT-FRANCAIS représenté par le Délégué Général pour l' Armement Electrical sliding contact device having a multifibre brush and electrical rotating machine using such a device
EP0099158A1 (en) * 1982-07-12 1984-01-25 Josephus Bernardus Michael Berings A device for controlling a brush-commutator assembly of an electric machine
US4567414A (en) * 1982-07-12 1986-01-28 Berings Josephus B M Method and a device for controlling a brush-commutator assembly of an electric machine
EP3457150A1 (en) * 2017-09-13 2019-03-20 Mitsubishi Hitachi Power Systems, Ltd. Spark detecting apparatus and method for devices using electric sliding contact, spark reduction method for devices using electric sliding contact, and sliding error detecting apparatus and method for devices using electric sliding contact

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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