GB803957A - Improvements in or relating to control systems for synchronous machines - Google Patents

Improvements in or relating to control systems for synchronous machines

Info

Publication number
GB803957A
GB803957A GB26915/56A GB2691556A GB803957A GB 803957 A GB803957 A GB 803957A GB 26915/56 A GB26915/56 A GB 26915/56A GB 2691556 A GB2691556 A GB 2691556A GB 803957 A GB803957 A GB 803957A
Authority
GB
United Kingdom
Prior art keywords
bridge
current
stator
motor
pii
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
GB26915/56A
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 GB803957A publication Critical patent/GB803957A/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
    • H02K19/02—Synchronous motors
    • H02K19/10—Synchronous motors for multi-phase current
    • 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
    • H02P25/32—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 using discharge tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Ac Motors In General (AREA)
  • Motor And Converter Starters (AREA)

Abstract

803,957. Control of A.C. motors. BRONIEWSKI, B. Sept. 3, 1956 [Sept. 2, 1955], No. 26915/56. Class 38 (3). A three-phase synchronous machine which may operate as a generator or a motor has its stator winding S connected to a bridge PI, comprising thyratrons a-f, which permits the transfer of energy from the stator to the supply system Ra or in the opposite direction. The bridge PI is connected to a direct-current source consisting of a second bridge PII which is, in turn, connected to the supply system Ra. The control of the bridge PI is effected at the frequency of the stator current, whilst the control of the bridge PII takes place at the frequency of the supply, this control consisting in varying the firing periods of the valves by phase-shifting the grid voltages. In this manner, the amplitude of the stator current and is phase-relationship with the stator voltage s regulated. The machine may be started as a motor by allowing the passage of current through only two phases of the stator winding, by blocking some of the controlled rectifiers. During the starting period, the current in the bridge PII is intermittently interrupted at a frequency which is a multiple of the motor speed. When the motor reaches a predetermined speed, the voltage induced in the motor becomes sufficient to ensure commutation so that the intermittent current flow imposed on the valves of the bridge PII is removed. An inductance L reduces the ripple current.
GB26915/56A 1955-09-02 1956-09-03 Improvements in or relating to control systems for synchronous machines Expired GB803957A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH803957X 1955-09-02

Publications (1)

Publication Number Publication Date
GB803957A true GB803957A (en) 1958-11-05

Family

ID=4537886

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26915/56A Expired GB803957A (en) 1955-09-02 1956-09-03 Improvements in or relating to control systems for synchronous machines

Country Status (1)

Country Link
GB (1) GB803957A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148320A (en) * 1960-05-14 1964-09-08 Brush Electrical Eng Synchronous induction motor speed control
DE1261585B (en) * 1963-07-11 1968-02-22 Licentia Gmbh Method for operating an asynchronous cage-rotor motor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3148320A (en) * 1960-05-14 1964-09-08 Brush Electrical Eng Synchronous induction motor speed control
DE1261585B (en) * 1963-07-11 1968-02-22 Licentia Gmbh Method for operating an asynchronous cage-rotor motor

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