GB1276837A - Electric motor speed control systems - Google Patents

Electric motor speed control systems

Info

Publication number
GB1276837A
GB1276837A GB6152168A GB6152168A GB1276837A GB 1276837 A GB1276837 A GB 1276837A GB 6152168 A GB6152168 A GB 6152168A GB 6152168 A GB6152168 A GB 6152168A GB 1276837 A GB1276837 A GB 1276837A
Authority
GB
United Kingdom
Prior art keywords
coil
motor
flux
armature
july
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
GB6152168A
Inventor
Harry Norman Barr
Jack Boardman
Terence Arthur Georg Humphreys
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.)
General Motors Ltd
Original Assignee
General Motors 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 General Motors Ltd filed Critical General Motors Ltd
Publication of GB1276837A publication Critical patent/GB1276837A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/02—Details
    • H02K21/021—Means for mechanical adjustment of the excitation flux
    • H02K21/028—Means for mechanical adjustment of the excitation flux by modifying the magnetic circuit within the field or the armature, e.g. by using shunts, by adjusting the magnets position, by vectorial combination of field or armature sections
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Brushless Motors (AREA)

Abstract

1276837 Permanent magnet generators GENERAL MOTORS Ltd 10 July 1969 [13 July 1968 27 Dec 1968] 33539/68 and 66121/68 Heading H2A A voltage generator 2 for the control system of a motor 1 is mounted in the end of the motor, consists of a rotating permanent magnet 4 which causes variations in the flux through the armature 8 of a fixed coil 3. The output is varied by adjusting the magnetic shunt provided by screw 12 and temperature variation is reduced by placing a further temperature sensitive shunt 15, Fig. 2, adjacent the annular magnet 14, which is heat insulated from the motor shaft by plastics bushes 16. The generator is screened from motor flux by the plate 10 and core 11. The coil 3 may be symmetrically mounted on armature 8, Fig. 4 (not shown), and in a further arrangement, Fig. 5 (not shown), the coil 3 is mounted so that flux may be varied by means of a screw passing through the coil and the base of a U-shaped armature 8.
GB6152168A 1968-07-13 1968-07-13 Electric motor speed control systems Expired GB1276837A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3353968 1968-07-13

Publications (1)

Publication Number Publication Date
GB1276837A true GB1276837A (en) 1972-06-07

Family

ID=10354266

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6152168A Expired GB1276837A (en) 1968-07-13 1968-07-13 Electric motor speed control systems

Country Status (1)

Country Link
GB (1) GB1276837A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2341243A1 (en) * 1972-08-16 1974-04-04 British Domestic Appliances ELECTRIC GENERATOR, IN PARTICULAR TACHOGENERATOR
FR2309733A1 (en) * 1975-04-30 1976-11-26 Tecumseh Products Co INTERNAL COMBUSTION ENGINE MAGNETO-ALTERNATOR

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2341243A1 (en) * 1972-08-16 1974-04-04 British Domestic Appliances ELECTRIC GENERATOR, IN PARTICULAR TACHOGENERATOR
FR2309733A1 (en) * 1975-04-30 1976-11-26 Tecumseh Products Co INTERNAL COMBUSTION ENGINE MAGNETO-ALTERNATOR

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Legal Events

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