SE7909926L - STROMKELLA FOR REAR WELDING - Google Patents

STROMKELLA FOR REAR WELDING

Info

Publication number
SE7909926L
SE7909926L SE7909926A SE7909926A SE7909926L SE 7909926 L SE7909926 L SE 7909926L SE 7909926 A SE7909926 A SE 7909926A SE 7909926 A SE7909926 A SE 7909926A SE 7909926 L SE7909926 L SE 7909926L
Authority
SE
Sweden
Prior art keywords
rectifiers
phase
welding
addition
controllable rectifiers
Prior art date
Application number
SE7909926A
Other languages
Unknown language ( )
Swedish (sv)
Inventor
P Bodewig
Original Assignee
Messer Griesheim Gmbh
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 Messer Griesheim Gmbh filed Critical Messer Griesheim Gmbh
Publication of SE7909926L publication Critical patent/SE7909926L/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
    • H02M5/02—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc
    • H02M5/04—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters
    • H02M5/22—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M5/25—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
    • H02M5/27—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means for conversion of frequency
    • H02M5/271—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases without intermediate conversion into dc by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means for conversion of frequency from a three phase input voltage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
    • B23K9/1006—Power supply
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • H01F30/14—Two-phase, three-phase or polyphase transformers for changing the number of phases

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Arc Welding In General (AREA)

Abstract

In a power source for arc welding, a three-phase transformer (10) is connected to a three-phase network (R, S, T) and, in addition, controllable rectifiers are provided for generating an alternating single- phase welding current which is one- and-one-half or three times the supply frequency. In order to obtain the desired welding current frequency with as small a number of controllable rectifiers as is possible, the primary windings (11, 12, 13) in the three- phase transformer (10) are delta connected and the secondary windings (14, 15, 16) are star connected and, in addition, each secondary winding (14, 15, 16) is arranged in series with two antiparallel- connected controllable rectifiers (17/18, 19/20, 21/22), the rectifiers (17 to 22) being connected to a workpiece (25) via the centre tap of a choke (23) and the centre point (M) of the secondary windings (14, 15, 16) being connected to a welding torch (26). <IMAGE>
SE7909926A 1978-12-22 1979-11-30 STROMKELLA FOR REAR WELDING SE7909926L (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782855664 DE2855664A1 (en) 1978-12-22 1978-12-22 POWER SOURCE FOR ARC WELDING

Publications (1)

Publication Number Publication Date
SE7909926L true SE7909926L (en) 1980-06-23

Family

ID=6058120

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7909926A SE7909926L (en) 1978-12-22 1979-11-30 STROMKELLA FOR REAR WELDING

Country Status (7)

Country Link
JP (1) JPS5588984A (en)
BR (1) BR7908322A (en)
DE (1) DE2855664A1 (en)
FR (1) FR2444529A1 (en)
GB (1) GB2039168A (en)
IT (1) IT1126530B (en)
SE (1) SE7909926L (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4435632A (en) * 1982-02-12 1984-03-06 Hobart Brothers Company Three phase square wave welding power supply
DE4004667A1 (en) * 1990-02-15 1991-08-22 Peter Bodewigs AC POWER SOURCE FOR WELDING
US6114655A (en) * 1997-06-11 2000-09-05 Illinois Tool Works Inc. Method and apparatus for producing welding power
US6177651B1 (en) * 1998-06-11 2001-01-23 Illinois Tool Works Inc. Method and apparatus for producing welding power
AT411444B (en) * 2000-06-28 2004-01-26 Fronius Schweissmasch Prod WELDING MACHINE, WHICH ON ONE, TWO OR THREE-PHASE NETWORKS CAN BE OPERATED

Also Published As

Publication number Publication date
FR2444529B3 (en) 1982-05-07
DE2855664A1 (en) 1980-07-03
JPS5588984A (en) 1980-07-05
FR2444529A1 (en) 1980-07-18
GB2039168A (en) 1980-07-30
IT1126530B (en) 1986-05-21
IT7927945A0 (en) 1979-12-07
BR7908322A (en) 1980-09-16

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