GB754066A - Automatic load-dependent y-delta change-over system for electric induction motors - Google Patents

Automatic load-dependent y-delta change-over system for electric induction motors

Info

Publication number
GB754066A
GB754066A GB26685/54A GB2668554A GB754066A GB 754066 A GB754066 A GB 754066A GB 26685/54 A GB26685/54 A GB 26685/54A GB 2668554 A GB2668554 A GB 2668554A GB 754066 A GB754066 A GB 754066A
Authority
GB
United Kingdom
Prior art keywords
relay
delta
motor
change
star
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
GB26685/54A
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.)
Licencia Talalmanyokat Ertekesito Vallalat
Original Assignee
Licencia Talalmanyokat Ertekesito Vallalat
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 Licencia Talalmanyokat Ertekesito Vallalat filed Critical Licencia Talalmanyokat Ertekesito Vallalat
Publication of GB754066A publication Critical patent/GB754066A/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P25/00Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
    • H02P25/16Arrangements 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
    • H02P25/18Arrangements 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 with arrangements for switching the windings, e.g. with mechanical switches or relays
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02PCONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P1/00Arrangements for starting electric motors or dynamo-electric converters
    • H02P1/16Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
    • H02P1/26Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor
    • H02P1/32Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual polyphase induction motor by star/delta switching

Landscapes

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

Abstract

754,066. Control of A.C. motors. LICENCIA TALALMANYOKAT ERTEKESITO VALLALAT. Sept. 14, 1954 [Sept. 15, 1953], No. 26685/54. Class 38(3) An induction motor M is changed to the delta or star-connection when the load is increasing or decreasing by means of a change-over switch 2 which is actuated by a relay 4 of the watt-metric type. As shown, the single winding of the control relay is energized both in accordance with a phase current of the motor and in response to the voltage between two phases of the supply, the resultant energization being proportional to the wattful current of the motor. The relay 4 is of the time-delay type, and its armature may have an extension carrying adjustable abutments for effecting the switching operations of the relay, the arrangement being such that the change from star to delta-connection is made at a higher current-value than the change from delta to star. In addition, the relay 4 may be provided with a dash-pot. A two-pole switch 5 disables the relay 4 and enables the motor to be operated permanently in delta.
GB26685/54A 1953-09-15 1954-09-14 Automatic load-dependent y-delta change-over system for electric induction motors Expired GB754066A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HU754066X 1953-09-15

Publications (1)

Publication Number Publication Date
GB754066A true GB754066A (en) 1956-08-01

Family

ID=10980223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB26685/54A Expired GB754066A (en) 1953-09-15 1954-09-14 Automatic load-dependent y-delta change-over system for electric induction motors

Country Status (1)

Country Link
GB (1) GB754066A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478399A1 (en) * 1980-03-13 1981-09-18 Borg Warner CONTROL SYSTEM FOR INDUCTION ALTERNATIVE MOTORS
FR2490037A1 (en) * 1980-09-10 1982-03-12 Lbm Presses Electrically operated moulding press - has motor windings connected in star and triangle pattern during operating cycle to provide higher approach speed and greater force at low s
US4691155A (en) * 1979-04-06 1987-09-01 Taylor Noel R Automatic load seeking control for a motor
CN102811018A (en) * 2011-06-03 2012-12-05 西门子公司 Asynchronous motor adopting star connection or delta connection related to load

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4691155A (en) * 1979-04-06 1987-09-01 Taylor Noel R Automatic load seeking control for a motor
FR2478399A1 (en) * 1980-03-13 1981-09-18 Borg Warner CONTROL SYSTEM FOR INDUCTION ALTERNATIVE MOTORS
FR2490037A1 (en) * 1980-09-10 1982-03-12 Lbm Presses Electrically operated moulding press - has motor windings connected in star and triangle pattern during operating cycle to provide higher approach speed and greater force at low s
CN102811018A (en) * 2011-06-03 2012-12-05 西门子公司 Asynchronous motor adopting star connection or delta connection related to load
WO2012163433A3 (en) * 2011-06-03 2013-04-25 Siemens Aktiengesellschaft Asynchronous motor with load-dependent star or delta connection

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