GB546594A - Improvements in and relating to the excitation of polyphase dynamo-electric machines - Google Patents

Improvements in and relating to the excitation of polyphase dynamo-electric machines

Info

Publication number
GB546594A
GB546594A GB1647140A GB1647140A GB546594A GB 546594 A GB546594 A GB 546594A GB 1647140 A GB1647140 A GB 1647140A GB 1647140 A GB1647140 A GB 1647140A GB 546594 A GB546594 A GB 546594A
Authority
GB
United Kingdom
Prior art keywords
windings
commutators
current
phase
wound
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
GB1647140A
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.)
ARTHUR LOUIS WALLOF
Original Assignee
ARTHUR LOUIS WALLOF
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 ARTHUR LOUIS WALLOF filed Critical ARTHUR LOUIS WALLOF
Priority to GB1647140A priority Critical patent/GB546594A/en
Publication of GB546594A publication Critical patent/GB546594A/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

Landscapes

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

Abstract

546,594. Exciting alternating-current machines. WALLOF, A. L. Nov. 14; 1940, No. 16471. [Class 35] In a polyphase dynamo-electric machine, the unidirectional excitation current is obtained by rectifying an alternating current by a set of commutators rotated by the machine. The alternating current may be obtained from windings inductively associated with the main windings. In the motor shown in Fig. 1 the stator is provided with main windings 31, 32, 33 lap wound with four coils in series to each phase, two slots to each coil and alternate coils wound in opposite senses, Fig. 3 (not shown). An identical set of stator windings 91, 92, 93 in the same slots supply three-phase current to brushes 97a, 98a, 99a engaging commutators 82, 82, 83 each in four segments with opposite segments joined. One field winding 10, 11, 12 for each phase is wound on each of four rotor poles, similar windings being joined in series to adjacent segments of corresponding commutators. A further set of brushes 97b, 98b, 99b phased 180 degrees from the first set are delta-connected through phasebalancing resistors 311. The rotor is provided with squirrel-cage bars 14 ... 17 for starting; when the motor is running synchronously the commutators supply direct current to the rotor field windings. The application to quarter-phase motors is also described.
GB1647140A 1940-11-14 1940-11-14 Improvements in and relating to the excitation of polyphase dynamo-electric machines Expired GB546594A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1647140A GB546594A (en) 1940-11-14 1940-11-14 Improvements in and relating to the excitation of polyphase dynamo-electric machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1647140A GB546594A (en) 1940-11-14 1940-11-14 Improvements in and relating to the excitation of polyphase dynamo-electric machines

Publications (1)

Publication Number Publication Date
GB546594A true GB546594A (en) 1942-07-21

Family

ID=10077930

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1647140A Expired GB546594A (en) 1940-11-14 1940-11-14 Improvements in and relating to the excitation of polyphase dynamo-electric machines

Country Status (1)

Country Link
GB (1) GB546594A (en)

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