GB1228757A - - Google Patents

Info

Publication number
GB1228757A
GB1228757A GB1228757DA GB1228757A GB 1228757 A GB1228757 A GB 1228757A GB 1228757D A GB1228757D A GB 1228757DA GB 1228757 A GB1228757 A GB 1228757A
Authority
GB
United Kingdom
Prior art keywords
field winding
winding
motor
diodes
switch
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
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 filed Critical
Publication of GB1228757A publication Critical patent/GB1228757A/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
    • H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
    • H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
    • H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
    • H02P3/24—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor by applying dc to the motor
    • 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
    • H02P23/00—Arrangements or methods for the control of AC motors characterised by a control method other than vector control
    • H02P23/10—Controlling by adding a dc current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Stopping Of Electric Motors (AREA)

Abstract

1,228,757. Control of A.C. motors. J. S. SMITH. 5 July, 1968 [20 July, 1967], No. 33510/67. Heading H2J. In an arrangement for braking the rotor 10 of an A.C. squirrel-cage induction motor by producing an effective direct current in the motor field winding(s), a pair of diodes D 1 , D 2 are connected in series opposing relationship for the or each field winding 12, one diode D 1 being arranged in series and the other diode D 2 in parallel with the associated field winding. For a single-phase motor, the auxiliary winding 15 is connected in parallel with the field winding 12 during braking by a switch 16. The braking effect is controlled by a variable resistor 18 connected between the junction point of diodes D 1 , D 2 , and winding 12 via a switch 17 coupled with the switch 16. The field windings of a three-phase delta or star-connected motor are provided with pairs of diodes, switches 17a, 17b, 17c and variable resistors 18a, 18b, 18c connected in a manner similar to that for a single field winding, Figs. 3, 4 (not shown).
GB1228757D 1967-07-20 1967-07-20 Expired GB1228757A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3351067 1967-07-20

Publications (1)

Publication Number Publication Date
GB1228757A true GB1228757A (en) 1971-04-21

Family

ID=10353913

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1228757D Expired GB1228757A (en) 1967-07-20 1967-07-20

Country Status (1)

Country Link
GB (1) GB1228757A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243730A (en) * 1990-03-21 1991-11-06 Truetzschler & Co An electric motor braking apparatus and method for braking a rotating roller

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2243730A (en) * 1990-03-21 1991-11-06 Truetzschler & Co An electric motor braking apparatus and method for braking a rotating roller
GB2243730B (en) * 1990-03-21 1994-05-11 Truetzschler Gmbh & Co Kg An apparatus and method for braking a rotating roller
US5374885A (en) * 1990-03-21 1994-12-20 Trutzschler Gmbh & Co. Kg Method and apparatus for braking a rotary component in a textile fiber processing machine

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed