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GB307121A - Improvements in the regulation of asynchronous alternating current machines - Google Patents

Improvements in the regulation of asynchronous alternating current machines

Info

Publication number
GB307121A
GB307121A GB3337027A GB3337027A GB307121A GB 307121 A GB307121 A GB 307121A GB 3337027 A GB3337027 A GB 3337027A GB 3337027 A GB3337027 A GB 3337027A GB 307121 A GB307121 A GB 307121A
Authority
GB
United Kingdom
Prior art keywords
brushes
stator
regulation
coils
windings
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
GB3337027A
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.)
English Electric Co Ltd
Original Assignee
English Electric 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 English Electric Co Ltd filed Critical English Electric Co Ltd
Priority to GB3337027A priority Critical patent/GB307121A/en
Publication of GB307121A publication Critical patent/GB307121A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K17/00—Asynchronous induction motors; Asynchronous induction generators
    • H02K17/02—Asynchronous induction motors
    • H02K17/34—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter
    • H02K17/38—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with a commutator machine

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)

Abstract

307,121. English Electric Co., Ltd., and Schroeder, G. Dec. 9, 1927. Alternating-current induction machines; rotary transformers.-In an arrangement for regulating an induction motor or other asynchronous machine by means of a commutator frequency converter driven at a speed proportional to that of the asynchronous motor and having no stator field windings or only commutating windings on its stator, the converter is provided with pairs of brushes movable relatively to each other for speed regulation, the voltage between the brushes being applied directly to a winding on the motor under regulation. In addition, all the brush sets may be moved together for phase regulation. In the form shown in Fig. 1, the three-phase secondary windings 3, 4, 5 of the main induction motor 1 are brought out on each pole to rings 6 which are connected to brushes on the commutator 14 of the frequency transformer 15. This consists of an unwound stator with a closed winding symmetrically tapped to six rings 16 connected to the supply through a transformer 18. Speed regulation of the main machine 1 is effected by moving brushes 7, 9, 11 in one direction and the brushes 8, 10, 12 in the other, and phase regulation by moving all the brushes together in the same direction. Fig. 2 shows the application to a frequency transformer having shunt and series commutating windings. In this case, the frequency converter is provided with two commutators, one at each end of its rotor, and the stator is divided into two parts capable of independent rotation, each with one of the brush sets. The secondary windings 3, 4, 5 are connected respectively to the brush pairs 7-8, 9-10 and 11-12 on the two commutators 19, 20 through the series commutating coils 22, 24. The twopart stator carries movably the auxiliary shunt coils 21, 23 in addition to the series coils. Speed regulation of the main motor 1 is effected by turning the two halves of the stator, together with the brushes and stator coils, in opposite directions and phase regulation is carried out by moving the two halves &c. in the same direction.
GB3337027A 1927-12-09 1927-12-09 Improvements in the regulation of asynchronous alternating current machines Expired GB307121A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3337027A GB307121A (en) 1927-12-09 1927-12-09 Improvements in the regulation of asynchronous alternating current machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3337027A GB307121A (en) 1927-12-09 1927-12-09 Improvements in the regulation of asynchronous alternating current machines

Publications (1)

Publication Number Publication Date
GB307121A true GB307121A (en) 1929-03-07

Family

ID=10352041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3337027A Expired GB307121A (en) 1927-12-09 1927-12-09 Improvements in the regulation of asynchronous alternating current machines

Country Status (1)

Country Link
GB (1) GB307121A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6297287B1 (en) 1997-06-04 2001-10-02 University Of Florida Research Foundation, Inc. Anti-arrhythmic composition and methods of treatment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6297287B1 (en) 1997-06-04 2001-10-02 University Of Florida Research Foundation, Inc. Anti-arrhythmic composition and methods of treatment

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