ATE57893T1 - METHOD FOR SUPPLYING ENERGY TO A THREE-PHASE MOTOR OF A HOIST AND EQUIPMENT FOR CARRYING OUT THE METHOD. - Google Patents

METHOD FOR SUPPLYING ENERGY TO A THREE-PHASE MOTOR OF A HOIST AND EQUIPMENT FOR CARRYING OUT THE METHOD.

Info

Publication number
ATE57893T1
ATE57893T1 AT87111895T AT87111895T ATE57893T1 AT E57893 T1 ATE57893 T1 AT E57893T1 AT 87111895 T AT87111895 T AT 87111895T AT 87111895 T AT87111895 T AT 87111895T AT E57893 T1 ATE57893 T1 AT E57893T1
Authority
AT
Austria
Prior art keywords
lifting
load
phase motor
limiting
current intensity
Prior art date
Application number
AT87111895T
Other languages
German (de)
Inventor
Arnold Axmann
Manfred Dipl-Ing Fh Lotter
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Application granted granted Critical
Publication of ATE57893T1 publication Critical patent/ATE57893T1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
    • B66D1/28—Other constructional details
    • B66D1/40—Control devices
    • B66D1/48—Control devices automatic
    • B66D1/485—Control devices automatic electrical
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Ac Motors In General (AREA)
  • Elevator Control (AREA)
  • Control Of Multiple Motors (AREA)

Abstract

1. A method for supplying a three-phase motor (M) of a hoisting unit provided with a load measuring unit (6), in particular an asynchronous motor and in particular a cage motor, with electric energy of variable frequency and variable voltage or current intensity, in particular from a converter (1, 2), wherein the frequency is regulated such that when lifting a lifting load the three-phase motor forms the required lifting moment and wherein a basic value of the voltage or the current intensity is preset to be so high in the lower frequency range, that the magnetization of the three-phase motor is also sufficient in the lower frequency range for forming the lifting moment and for lifting load, characterised in that the basic value (U2) of the voltage (U) or current intensity is lowered relative to the limiting basic value (U1) required for forming a limiting lifting moment and for lifting a limiting lifting load, if the lifting load (5) detected by the load measuring unit (6) is smaller than the limiting lifting load.
AT87111895T 1986-08-28 1987-08-17 METHOD FOR SUPPLYING ENERGY TO A THREE-PHASE MOTOR OF A HOIST AND EQUIPMENT FOR CARRYING OUT THE METHOD. ATE57893T1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3629266 1986-08-28
EP87111895A EP0259656B1 (en) 1986-08-28 1987-08-17 Process for supplying power to a three-phase motor of a lifting device, and device for carrying out the process

Publications (1)

Publication Number Publication Date
ATE57893T1 true ATE57893T1 (en) 1990-11-15

Family

ID=6308371

Family Applications (1)

Application Number Title Priority Date Filing Date
AT87111895T ATE57893T1 (en) 1986-08-28 1987-08-17 METHOD FOR SUPPLYING ENERGY TO A THREE-PHASE MOTOR OF A HOIST AND EQUIPMENT FOR CARRYING OUT THE METHOD.

Country Status (3)

Country Link
EP (1) EP0259656B1 (en)
AT (1) ATE57893T1 (en)
DE (1) DE3765896D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4138596A1 (en) * 1991-11-23 1993-05-27 Buehne Werner Abus Kg LIFTING WORKING WITH VARIABLE LIFTING SPEED
DE4440420C3 (en) * 1994-11-07 2003-07-24 Demag Cranes & Components Gmbh Method and device for monitoring and / or controlling the speed of an electric drive with frequency converter for hoists
DE102007062609A1 (en) * 2007-12-22 2009-06-25 Aac-Concept Gmbh Method for operating asynchronous motor, involves calculating changing current frequency with continuously detected motor torque on basis of load dependent speed characteristic
ES2381541T3 (en) 2009-12-01 2012-05-29 Konecranes Plc Motor control system for a forklift drive mechanism
EP2921448B1 (en) * 2014-03-18 2016-05-18 ABB Technology Oy Method for operating winch, and winch
CN105439022B (en) * 2014-08-05 2017-12-05 北京金顺帆科技有限公司 A kind of helicopter hoist control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS499858B1 (en) * 1968-11-29 1974-03-07
US3940110A (en) * 1974-04-12 1976-02-24 Kenro Motoda Lifting apparatus
DE3048097A1 (en) * 1980-12-19 1982-07-29 Loher Gmbh, 8399 Ruhstorf Control circuit for asynchronous rotating machine - monitors supply frequency and machine speed to restart if necessary (NL 16.07.82)

Also Published As

Publication number Publication date
EP0259656B1 (en) 1990-10-31
DE3765896D1 (en) 1990-12-06
EP0259656A1 (en) 1988-03-16

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