GB284177A - Method of and means for starting synchronous motors - Google Patents

Method of and means for starting synchronous motors

Info

Publication number
GB284177A
GB284177A GB2743927A GB2743927A GB284177A GB 284177 A GB284177 A GB 284177A GB 2743927 A GB2743927 A GB 2743927A GB 2743927 A GB2743927 A GB 2743927A GB 284177 A GB284177 A GB 284177A
Authority
GB
United Kingdom
Prior art keywords
motor
field
current
relay
starting
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
GB2743927A
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.)
Electric Machinery Manufacturing Co
Original Assignee
Electric Machinery Manufacturing Co
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 Electric Machinery Manufacturing Co filed Critical Electric Machinery Manufacturing Co
Priority to GB2743927A priority Critical patent/GB284177A/en
Publication of GB284177A publication Critical patent/GB284177A/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
    • H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/46—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual synchronous motor

Landscapes

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

Abstract

284,177. Jackson, L. Mellersh-, (Electric Machinery Manufacturing Co.). July 20, 1926. Systems for alternating-current motors only.- In a starting system wherein a synchronous motor 1 starts as an induction motor and on approaching synchronous speed has its field-winding f automatically switched-on to a direct-current supply 30 by means of a polarized frequency relay 5, the relay is provided with an extra contact 48 connected to a circuit for operating an unloading device, e.g., a magnetic clutch or an airvalve. The object is to throw the load on the motor substantially simultaneously with the application of direct current to the field. A starting compensator may be arranged so that reduced voltage and full voltage are successively applied to the stator winding.
GB2743927A 1926-07-20 1926-07-20 Method of and means for starting synchronous motors Expired GB284177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2743927A GB284177A (en) 1926-07-20 1926-07-20 Method of and means for starting synchronous motors

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2743927A GB284177A (en) 1926-07-20 1926-07-20 Method of and means for starting synchronous motors

Publications (1)

Publication Number Publication Date
GB284177A true GB284177A (en) 1928-01-20

Family

ID=10259609

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2743927A Expired GB284177A (en) 1926-07-20 1926-07-20 Method of and means for starting synchronous motors

Country Status (1)

Country Link
GB (1) GB284177A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212348A (en) * 1987-11-10 1989-07-19 Hawker Controls Ltd Improvements in circuits for starting electric motors
CN106998166A (en) * 2017-05-13 2017-08-01 上海建东科技有限公司 The soft-start method and control device of a kind of permagnetic synchronous motor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2212348A (en) * 1987-11-10 1989-07-19 Hawker Controls Ltd Improvements in circuits for starting electric motors
GB2212348B (en) * 1987-11-10 1992-04-08 Hawker Controls Ltd Improvements in circuits for starting electric motors
CN106998166A (en) * 2017-05-13 2017-08-01 上海建东科技有限公司 The soft-start method and control device of a kind of permagnetic synchronous motor

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