GB717020A - Improvements relating to the control of asynchronous induction motors - Google Patents

Improvements relating to the control of asynchronous induction motors

Info

Publication number
GB717020A
GB717020A GB25580/52A GB2558052A GB717020A GB 717020 A GB717020 A GB 717020A GB 25580/52 A GB25580/52 A GB 25580/52A GB 2558052 A GB2558052 A GB 2558052A GB 717020 A GB717020 A GB 717020A
Authority
GB
United Kingdom
Prior art keywords
motor
rectifier
control
resistor
grid
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
GB25580/52A
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.)
LODEWIJK FREDERIK ARIE KNOTTNE
Original Assignee
LODEWIJK FREDERIK ARIE KNOTTNE
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 LODEWIJK FREDERIK ARIE KNOTTNE filed Critical LODEWIJK FREDERIK ARIE KNOTTNE
Publication of GB717020A publication Critical patent/GB717020A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
    • H02P25/24—Variable impedance in stator or rotor circuit
    • H02P25/26—Variable impedance in stator or rotor circuit with arrangements for controlling secondary impedance

Landscapes

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

Abstract

717,020. Control of A.C. motors. KNOTTNERUS, L. F. A. Oct. 13, 1952 [Oct. 12, 1951], No. 25580/52. Class 38(3) [Also in Group XXXV] The slip-rings of an induction motor 1 are coupled to a grid-controlled rectifier 3 through a regulating transformer 2 the ratio of which is adjusted by means of a motor-driven governor 4 in such a manner that the anode potential of the rectifier remains constant despite changes in the rotor voltage of the motor. Grid control of the rectifier is effected by a rotary contact device 8 driven by a synchronous motor 5, each grid of the rectifier receiving a positive potential impulse in turn whilst the other grids remain at the negative potential afforded. through a rectifier 7. A torque motor 6 adjusts the device 8 to provide phase shift control of the rectifier. A carbon pile resistor 9 is connected in the circuit of the motor 6 and is initially adjusted by means of a handwheel 11. Further adjustment of the resistor 9 is effected by slide 10 coupled to the governor 4 so that any tendency for the speed of the motor to increase above the value corresponding to the setting of the handwheel is removed by a reduction in of the resistor 9 and adjustment of the motor 6 to retard the firing of the rectifier.
GB25580/52A 1951-10-12 1952-10-13 Improvements relating to the control of asynchronous induction motors Expired GB717020A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL717020X 1951-10-12

Publications (1)

Publication Number Publication Date
GB717020A true GB717020A (en) 1954-10-20

Family

ID=19814979

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25580/52A Expired GB717020A (en) 1951-10-12 1952-10-13 Improvements relating to the control of asynchronous induction motors

Country Status (1)

Country Link
GB (1) GB717020A (en)

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