GB861812A - Adjustable speed electric motor - Google Patents

Adjustable speed electric motor

Info

Publication number
GB861812A
GB861812A GB39376/57A GB3937657A GB861812A GB 861812 A GB861812 A GB 861812A GB 39376/57 A GB39376/57 A GB 39376/57A GB 3937657 A GB3937657 A GB 3937657A GB 861812 A GB861812 A GB 861812A
Authority
GB
United Kingdom
Prior art keywords
winding
rectifier
resistor
commutator
dec
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
GB39376/57A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB861812A publication Critical patent/GB861812A/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
    • H02K17/40—Cascade arrangement of an asynchronous motor with another dynamo-electric motor or converter with a rotary AC/DC converter

Landscapes

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

Abstract

861,812. Control of motors. SOGNI, G. Dec. 18, 1957 [Dec. 22, 1956], No. 39376/57. Class 38 (3). The slip energy from a wound rotor induction motor 1, 2, is rectified by rectifier 9 and fed to the armature 6 of a D.C. machine on the same shaft. Speed control is effected by means of variable resistor 14 or by varying the field excitation of the D.C. machine. Alternatively, the stator winding 1 may be adapted for stardelta conversion, or the winding may be tapped. A braking torque may be developed by shunting commutator 11 by a resistor, or by reversing the polarity of the D.C. field winding and connecting a resistor between the commutator 11 and rectifier 9. When the induction motor is supplied from a single-phase source, its rotor having a polyphase winding, the rectifier is protected against induced voltages of high frequency and amplitude at standstill by being shunted by capacitors and series-connected with inductors.
GB39376/57A 1956-12-22 1957-12-18 Adjustable speed electric motor Expired GB861812A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT861812X 1956-12-22

Publications (1)

Publication Number Publication Date
GB861812A true GB861812A (en) 1961-03-01

Family

ID=11330057

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39376/57A Expired GB861812A (en) 1956-12-22 1957-12-18 Adjustable speed electric motor

Country Status (1)

Country Link
GB (1) GB861812A (en)

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