GB694135A - Improvements in and relating to variable speed electric motors - Google Patents

Improvements in and relating to variable speed electric motors

Info

Publication number
GB694135A
GB694135A GB2449/51A GB244951A GB694135A GB 694135 A GB694135 A GB 694135A GB 2449/51 A GB2449/51 A GB 2449/51A GB 244951 A GB244951 A GB 244951A GB 694135 A GB694135 A GB 694135A
Authority
GB
United Kingdom
Prior art keywords
energized
winding
series
windings
distributer
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
GB2449/51A
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
Publication of GB694135A publication Critical patent/GB694135A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
    • H02P25/186—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays whereby the speed is regulated by using a periodic interrupter

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc Machiner (AREA)

Abstract

694,135. Dynamo-electric machines. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 31, 1951 [Feb. 16, 1950], No. 2449/51. Class 35. A variable speed D.C. motor comprises a polarized rotor and a stationary armature having three windings 1, 2, 3 energized in succession by means of a distributer switch 19 through saturable reactors 25, 29, 33 which serve to facilitate the commutation. The rotor field winding 4 is energized through slip-rings 6, 7 and a controlling rheostat 12 from the D.C. mains 10, 11. If desired, a quadrature commutating winding 14 energized through sliprings 15, 16 may be connected in the armature circuit. The distributer 19 may comprise a series of cam-operated contacts, but as shown it consists of a series of stationary contacts 1c, 2c, 3c, which are energized in sequence by a conducting arm 21 mounted on the rotor shaft 5 and connected through a rheostat 24 to the supply line 10. In order to assist commutation, each stator winding is connected to its corresponding distributer segment through a saturable reactor whose control winding is energized in dependence on the voltage across the other two windings. Thus, for example, winding 1 is connected to 1c through coil 26 of reactor 25 whose control winding 27 is connected in series with resistor 28 across stator windings 2 and 3.
GB2449/51A 1950-02-15 1951-01-31 Improvements in and relating to variable speed electric motors Expired GB694135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US694135XA 1950-02-15 1950-02-15

Publications (1)

Publication Number Publication Date
GB694135A true GB694135A (en) 1953-07-15

Family

ID=22088817

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2449/51A Expired GB694135A (en) 1950-02-15 1951-01-31 Improvements in and relating to variable speed electric motors

Country Status (1)

Country Link
GB (1) GB694135A (en)

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