GB543744A - Improvements in inductor type high frequency alternators - Google Patents

Improvements in inductor type high frequency alternators

Info

Publication number
GB543744A
GB543744A GB1279240A GB1279240A GB543744A GB 543744 A GB543744 A GB 543744A GB 1279240 A GB1279240 A GB 1279240A GB 1279240 A GB1279240 A GB 1279240A GB 543744 A GB543744 A GB 543744A
Authority
GB
United Kingdom
Prior art keywords
damping
stator
slots
winding
core
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
GB1279240A
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.)
JACK HOLMES WALKER
British Thomson Houston Co Ltd
Original Assignee
JACK HOLMES WALKER
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 JACK HOLMES WALKER, British Thomson Houston Co Ltd filed Critical JACK HOLMES WALKER
Priority to GB1279240A priority Critical patent/GB543744A/en
Publication of GB543744A publication Critical patent/GB543744A/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
    • H02K19/22—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators
    • H02K19/24—Synchronous generators having windings each turn of which co-operates alternately with poles of opposite polarity, e.g. heteropolar generators with variable-reluctance soft-iron rotors without winding

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

543,744. Inductor alternators. BRITISH THOMSON-HOUSTON CO., Ltd., and WALKER, J. H. Aug. 9, 1940, No. 12792. [Class 35] A single-core heteropolar high-frequency inductor alternator, and particularly one in which the number of stator teeth equals that of the rotor teeth multiplied by twice the number of phases, has a damping winding on the stator embracing and damping the whole main exciting flux but not appreciably damping the oscillating flux. By these means pulsations of the main flux due to armature reaction are minimized. In addition, conducting bars or wedges, arranged to close the rotor slots completely and insulated from the core and from each other, may be used to damp harmonics in the oscillating flux due to the inverse field. The Figure shows one pole of a heteropolar alternator with generating coils D and with an exciting coil A wound in two large slots in the stator B. The stator damping winding consists of copper wedges E closing the slots and short-circuited by end rings F. The damping may be improved by additional wedges or bars in stator slots such that the winding pitch of adjacent bars is an even multiple of that of the oscillating flux. The stator damping windings may or may not be insulated from the core. Specification 483,660 is referred to. The Provisional Specification describes also a double-core inductor alternator in which the damping winding is a conducting ring fitted concentrically with the main fleld winding; or insulated conducting bars may be fitted in the rotor slots and connected to a conducting ring at each end of the machine. Aluminium or brass may replace copper. Specification 535,406 also is referred to.
GB1279240A 1940-08-09 1940-08-09 Improvements in inductor type high frequency alternators Expired GB543744A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1279240A GB543744A (en) 1940-08-09 1940-08-09 Improvements in inductor type high frequency alternators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1279240A GB543744A (en) 1940-08-09 1940-08-09 Improvements in inductor type high frequency alternators

Publications (1)

Publication Number Publication Date
GB543744A true GB543744A (en) 1942-03-11

Family

ID=10011214

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1279240A Expired GB543744A (en) 1940-08-09 1940-08-09 Improvements in inductor type high frequency alternators

Country Status (1)

Country Link
GB (1) GB543744A (en)

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