GB579411A - Improvements in dynamo electric machines - Google Patents

Improvements in dynamo electric machines

Info

Publication number
GB579411A
GB579411A GB337140A GB337140A GB579411A GB 579411 A GB579411 A GB 579411A GB 337140 A GB337140 A GB 337140A GB 337140 A GB337140 A GB 337140A GB 579411 A GB579411 A GB 579411A
Authority
GB
United Kingdom
Prior art keywords
teeth
stator
rotor
pitch
phase
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
GB337140A
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Priority to GB337140A priority Critical patent/GB579411A/en
Publication of GB579411A publication Critical patent/GB579411A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K19/00—Synchronous motors or generators
    • H02K19/16—Synchronous generators
    • H02K19/18—Synchronous generators having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generators
    • H02K19/20—Synchronous generators having windings each turn of which co-operates only with poles of one polarity, e.g. homopolar generators with variable-reluctance soft-iron rotors without winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Synchronous Machinery (AREA)

Abstract

579,411. Inductor-alternators. MANDL, A., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Feb. 22, 1940, No. 3371. [Class 35] In a polyphase homopolar alternator with semi-closed slots and with each coil of the output winding embracing only one tooth of the stator, the coils for the several phases being located in phase sequence on the teeth, the pitch of the stator teeth is (mnŒ1) 180/m electrical degrees where m is the number of phases and n any integer such that the stator tooth pitch is greater than half the rotor tooth pitch. The figure shows a three-phase machine having sixteen rotor teeth, of which five, 3-7 are shewn. Stator teeth 8, 10, 12, 14 carry coils of the three-phase winding 15-18 and are separated by unwound teeth 9, 11, 13. The teeth are provided with pole tips so as to form semi-closed slots and the tops of the unwound teeth are substantially longer than those of the wound teeth, so that the latter are substantially of the width of the rotor teeth. An arrangement comprising two such rotors and stators on the same axis and with one exciting winding, but offset so that the even harmonics cancel-out is described.
GB337140A 1940-02-22 1940-02-22 Improvements in dynamo electric machines Expired GB579411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB337140A GB579411A (en) 1940-02-22 1940-02-22 Improvements in dynamo electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB337140A GB579411A (en) 1940-02-22 1940-02-22 Improvements in dynamo electric machines

Publications (1)

Publication Number Publication Date
GB579411A true GB579411A (en) 1946-08-02

Family

ID=9757049

Family Applications (1)

Application Number Title Priority Date Filing Date
GB337140A Expired GB579411A (en) 1940-02-22 1940-02-22 Improvements in dynamo electric machines

Country Status (1)

Country Link
GB (1) GB579411A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230406A (en) * 1959-05-12 1966-01-18 Printed Motors Inc High frequency electromechanical generator

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3230406A (en) * 1959-05-12 1966-01-18 Printed Motors Inc High frequency electromechanical generator

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