GB1129492A - A drive system for an asynchronous electric motor - Google Patents

A drive system for an asynchronous electric motor

Info

Publication number
GB1129492A
GB1129492A GB5214/66A GB521466A GB1129492A GB 1129492 A GB1129492 A GB 1129492A GB 5214/66 A GB5214/66 A GB 5214/66A GB 521466 A GB521466 A GB 521466A GB 1129492 A GB1129492 A GB 1129492A
Authority
GB
United Kingdom
Prior art keywords
motor
voltage
contactor
controller
feb
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
GB5214/66A
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.)
ALLMAENNA SYENSKA ELEK SKA AKT
Original Assignee
ALLMAENNA SYENSKA ELEK SKA AKT
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 ALLMAENNA SYENSKA ELEK SKA AKT filed Critical ALLMAENNA SYENSKA ELEK SKA AKT
Publication of GB1129492A publication Critical patent/GB1129492A/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
    • H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
    • H02P27/02—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude
    • H02P27/026—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using supply voltage with constant frequency and variable amplitude whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00—Other constructional features or details
    • B66C13/18—Control systems or devices
    • B66C13/22—Control systems or devices for electric drives
    • B66C13/23—Circuits for controlling the lowering of the load
    • B66C13/26—Circuits for controlling the lowering of the load by ac motors
    • 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
    • H02P23/24—Controlling the direction, e.g. clockwise or counterclockwise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C2700/00—Cranes
    • B66C2700/08—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists
    • B66C2700/081—Electrical assemblies or electrical control devices for cranes, winches, capstans or electrical hoists with ac motors

Abstract

1,129,492. Automatic speed control. ALLMANNA SVENSKA ELEKTRISKA A.B. Feb. 7, 1966 [Feb. 8, 1965] No.5214/66. Heading G3R. [Also in Division H2] An induction motor driving a crane starts to lower the load when switch 40 is closed, the desired lowering speed being determined by the reference voltage at terminals 11, 12. Relay 13 is energized to close contacts 15 whereby contactor 17 is closed. Phase controller 20 ignites controlled rectifiers 1-3 for the motor to provide full driving torque. As the motor accelerates, the output voltage of tachometer generator 10 opposes the reference voltage so that the controller 20 delays the firing pulses for the controlled rectifiers to reduce the stator voltage. If the motor is over-driven by the load, the error signal is reversed so closing contactor 16 and opening contactor 17. The controller 20 operates to increase the motor voltage so that a braking torque is produced.
GB5214/66A 1965-02-08 1966-02-07 A drive system for an asynchronous electric motor Expired GB1129492A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE1569/65A SE313871B (en) 1965-02-08 1965-02-08

Publications (1)

Publication Number Publication Date
GB1129492A true GB1129492A (en) 1968-10-09

Family

ID=20258429

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5214/66A Expired GB1129492A (en) 1965-02-08 1966-02-07 A drive system for an asynchronous electric motor

Country Status (5)

Country Link
BE (1) BE675942A (en)
DE (1) DE1538268A1 (en)
GB (1) GB1129492A (en)
NO (1) NO122084B (en)
SE (1) SE313871B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347408A1 (en) * 1988-06-13 1989-12-20 VOITH WERKE Ing. A. Fritz Voith Gesellschaft m.b.H. & Co. KG. Drive for lifting devices or the like
RU2574380C2 (en) * 2014-02-12 2016-02-10 Станислав Владимирович Пастин Method for pulse-frequency regulation of alternating current drive with source of variable frequency and device for its implementation
CN112242800A (en) * 2020-11-20 2021-01-19 中船华南船舶机械有限公司 Multi-motor electric control system

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2461102C2 (en) * 1974-12-23 1985-09-19 Impuls Elektronik Gmbh & Co Kg, 7100 Heilbronn Elevator drive with pole-changing three-phase motor
SE422862B (en) * 1978-02-13 1982-03-29 Wihk Bernt Erik Livingstone STROM TIME-CONTROLLED CONTROL DEVICE FOR A SHORT-CURRENT MULTI-PHASE ASYNCHRONOUS MOTOR

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0347408A1 (en) * 1988-06-13 1989-12-20 VOITH WERKE Ing. A. Fritz Voith Gesellschaft m.b.H. & Co. KG. Drive for lifting devices or the like
RU2574380C2 (en) * 2014-02-12 2016-02-10 Станислав Владимирович Пастин Method for pulse-frequency regulation of alternating current drive with source of variable frequency and device for its implementation
CN112242800A (en) * 2020-11-20 2021-01-19 中船华南船舶机械有限公司 Multi-motor electric control system
CN112242800B (en) * 2020-11-20 2022-05-17 中船华南船舶机械有限公司 Multi-motor electric control system

Also Published As

Publication number Publication date
BE675942A (en) 1966-06-16
SE313871B (en) 1969-08-25
DE1538268A1 (en) 1969-06-19
NO122084B (en) 1971-05-18

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