GB289147A - Improvements in and relating to dynamo electric machines - Google Patents

Improvements in and relating to dynamo electric machines

Info

Publication number
GB289147A
GB289147A GB173927A GB173927A GB289147A GB 289147 A GB289147 A GB 289147A GB 173927 A GB173927 A GB 173927A GB 173927 A GB173927 A GB 173927A GB 289147 A GB289147 A GB 289147A
Authority
GB
United Kingdom
Prior art keywords
switch
brushes
commutator
winding
power factor
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
GB173927A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Priority to GB173927A priority Critical patent/GB289147A/en
Publication of GB289147A publication Critical patent/GB289147A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K27/00—AC commutator motors or generators having mechanical commutator
    • H02K27/12—AC commutator motors or generators having mechanical commutator having multi-phase operation
    • H02K27/18—AC commutator motors or generators having mechanical commutator having multi-phase operation in shunt connection with rotor feeding

Landscapes

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

Abstract

289,147. British Thomson-Houston Co., Ltd., and Dreghorn, H. Jan. 20, 1927. Alternating - current commutator machines. - In a compensated induction motor, in order to obtain power factor correction for both directions of running without the necessity for moving the commutator brushes, a switch is connected between the brushes and the secondary winding. In the form shown, the brushes 6, 7, 8 of the commutator 9 of the regulating winding (which, together with the primary winding on the rotor is not shown in the Figure) are connected to the two sides A, B of a two-way switch. The blades of the switch are connected to the secondary windings 3, 4, 5 of the motor which are so designed that the requisite power factor correction is given when the brushes are displaced by 60‹, i.e. when midway between the coils 3, 4, 5. When the switch is closed at A and B respectively the proper compensations for counter-clockwise and clockwise rotations are given without the need for moving the brushes. In the general case, the angle of displacement is 360¸2N where N is the number of phases of the machine. The switch may be combined with the switch which reverses the primary leads.
GB173927A 1927-01-20 1927-01-20 Improvements in and relating to dynamo electric machines Expired GB289147A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB173927A GB289147A (en) 1927-01-20 1927-01-20 Improvements in and relating to dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB173927A GB289147A (en) 1927-01-20 1927-01-20 Improvements in and relating to dynamo electric machines

Publications (1)

Publication Number Publication Date
GB289147A true GB289147A (en) 1928-04-20

Family

ID=9727138

Family Applications (1)

Application Number Title Priority Date Filing Date
GB173927A Expired GB289147A (en) 1927-01-20 1927-01-20 Improvements in and relating to dynamo electric machines

Country Status (1)

Country Link
GB (1) GB289147A (en)

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