FR2417200A1 - Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots - Google Patents

Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots

Info

Publication number
FR2417200A1
FR2417200A1 FR7803466A FR7803466A FR2417200A1 FR 2417200 A1 FR2417200 A1 FR 2417200A1 FR 7803466 A FR7803466 A FR 7803466A FR 7803466 A FR7803466 A FR 7803466A FR 2417200 A1 FR2417200 A1 FR 2417200A1
Authority
FR
France
Prior art keywords
alternator
stator slots
noiseless
motor vehicle
flux variation
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.)
Granted
Application number
FR7803466A
Other languages
French (fr)
Other versions
FR2417200B1 (en
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.)
Automobiles Citroen SA
Original Assignee
Automobiles Citroen SA
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 Automobiles Citroen SA filed Critical Automobiles Citroen SA
Priority to FR7803466A priority Critical patent/FR2417200A1/en
Publication of FR2417200A1 publication Critical patent/FR2417200A1/en
Application granted granted Critical
Publication of FR2417200B1 publication Critical patent/FR2417200B1/fr
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/16—Stator cores with slots for windings
    • H02K1/165—Shape, form or location of the slots
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)
  • Synchronous Machinery (AREA)

Abstract

The alternator has a magnetic shunt arranged so that the reluctance of the magnetic circuit is very much greater when the rotor's excitation poles are opposite the stator slots than when opposite the stator's armature. The magnetic shunt consists of a ferromagnetic plate between the projections of the stator slots and the insulating collar that separates the projections. Alternatively, the shunt may comprise the slot projections themselves. The variation in the magnetic flux cutting the poles in front of the slots is thus limited and the acoustic noise reduced accordingly.
FR7803466A 1978-02-08 1978-02-08 Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots Granted FR2417200A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7803466A FR2417200A1 (en) 1978-02-08 1978-02-08 Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7803466A FR2417200A1 (en) 1978-02-08 1978-02-08 Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots

Publications (2)

Publication Number Publication Date
FR2417200A1 true FR2417200A1 (en) 1979-09-07
FR2417200B1 FR2417200B1 (en) 1982-01-29

Family

ID=9204326

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7803466A Granted FR2417200A1 (en) 1978-02-08 1978-02-08 Noiseless alternator for motor vehicle - has ferromagnetic shunt plates reducing flux variation in front of stator slots

Country Status (1)

Country Link
FR (1) FR2417200A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266862A1 (en) * 1986-08-11 1988-05-11 Maghemite Inc. Improved brushless D.C. dynamoelectric machine
FR2886481A1 (en) * 2005-05-31 2006-12-01 Valeo Equip Electr Moteur Stator for e.g. alternator, has teeth cooperating with poles of rotor, and magnetically charged layer connecting two consecutive teeth, where layer is continuous layer connecting assembly of teeth and has preset thickness

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE222416C (en) * 1900-01-01
US2024745A (en) * 1933-10-14 1935-12-17 Westinghouse Electric & Mfg Co Laminated punching with small air-gap between teeth
FR806792A (en) * 1935-09-20 1936-12-24 Labinal Ets Improvements in the winding of armatures of electric machines
CH207004A (en) * 1938-05-27 1939-09-15 Bbc Brown Boveri & Cie Method for closing half-closed grooves in electrical machines.
DE2726218A1 (en) * 1976-06-10 1977-12-22 Ford Werke Ag AC MACHINE

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE222416C (en) * 1900-01-01
US2024745A (en) * 1933-10-14 1935-12-17 Westinghouse Electric & Mfg Co Laminated punching with small air-gap between teeth
FR806792A (en) * 1935-09-20 1936-12-24 Labinal Ets Improvements in the winding of armatures of electric machines
CH207004A (en) * 1938-05-27 1939-09-15 Bbc Brown Boveri & Cie Method for closing half-closed grooves in electrical machines.
DE2726218A1 (en) * 1976-06-10 1977-12-22 Ford Werke Ag AC MACHINE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0266862A1 (en) * 1986-08-11 1988-05-11 Maghemite Inc. Improved brushless D.C. dynamoelectric machine
FR2886481A1 (en) * 2005-05-31 2006-12-01 Valeo Equip Electr Moteur Stator for e.g. alternator, has teeth cooperating with poles of rotor, and magnetically charged layer connecting two consecutive teeth, where layer is continuous layer connecting assembly of teeth and has preset thickness

Also Published As

Publication number Publication date
FR2417200B1 (en) 1982-01-29

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Legal Events

Date Code Title Description
ST Notification of lapse