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GB1527032A - Apparatus for supplying high intensity currents - Google Patents

Apparatus for supplying high intensity currents

Info

Publication number
GB1527032A
GB1527032A GB335/76A GB33576A GB1527032A GB 1527032 A GB1527032 A GB 1527032A GB 335/76 A GB335/76 A GB 335/76A GB 33576 A GB33576 A GB 33576A GB 1527032 A GB1527032 A GB 1527032A
Authority
GB
United Kingdom
Prior art keywords
transformer
thyristors
terminals
choke
welding
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
GB335/76A
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.)
BAUMGAERTNER I
KALNBACH WKS SCHWEISSTECH
Original Assignee
BAUMGAERTNER I
KALNBACH WKS SCHWEISSTECH
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 BAUMGAERTNER I, KALNBACH WKS SCHWEISSTECH filed Critical BAUMGAERTNER I
Publication of GB1527032A publication Critical patent/GB1527032A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/40—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • G05F1/45—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load
    • G05F1/455—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only being controlled rectifiers in series with the load with phase control
    • 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
    • B23K9/06—Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073—Stabilising the arc
    • B23K9/0732—Stabilising of the arc current
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/02—Regulating electric characteristics of arcs
    • G05F1/08—Regulating electric characteristics of arcs by means of semiconductor devices
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/02—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess current

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Arc Welding Control (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Generation Of Surge Voltage And Current (AREA)
  • Ac-Ac Conversion (AREA)

Abstract

1527032 Protective arrangements for welding apparatus I BAUMGARTNER [trading as WKS SCHWEISSTECHNIK WILLY KALNBACH] 6 Jan 1976 [10 Jan 1975] 00335/76 Heading H2H A circuit for supplying high currents to a load connected to terminals X, Y comprises a transformer S-TO having a primary winding P connected in series with a choke Dr, reverseparallel thyristors T1, T2 connected across the choke and a control circuit SG for shifting the phase of the thyristor firing pulses when the output of the transformer secondary winding S is short circuited. The load may be a welding apparatus the electrodes of which are connected to the terminals X, Y. A mains supply is connected to terminals AS, SB and to terminals A, B of the control circuit. If the electrodes are short circuited, the fall in the welding voltage below a limit value determined by Zener diodes Z2, Z3 prevents a supply of power to a transformer TO2. A transistor T is non-conductive so that a capacitor C1 charges via resistors R7, R8 and a potentiometer POT. When the capacitor voltage reaches a predetermined value, a unijunction transistor PUT is switched on and the capacitor discharges through a transformer Z-TO which supplies firing pulses to the thyristors. In view of the resistor R8 the firing points of the thyristors are retarded so that the choke Dr prevents excessive current flowing through the transformer. During normal welding operations the transistor T is conductive and shorts out the resistor R8 so that the firing point of the thyristors and therefore the welding current is determined by the potentiometer setting. A temperature responsive switch TS short circuits the supply to the control circuit in the event of an excessive temperature. The load may alternatively be a motor or a rectifier station.
GB335/76A 1975-01-10 1976-01-06 Apparatus for supplying high intensity currents Expired GB1527032A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH29375A CH598654A5 (en) 1975-01-10 1975-01-10

Publications (1)

Publication Number Publication Date
GB1527032A true GB1527032A (en) 1978-10-04

Family

ID=4183690

Family Applications (1)

Application Number Title Priority Date Filing Date
GB335/76A Expired GB1527032A (en) 1975-01-10 1976-01-06 Apparatus for supplying high intensity currents

Country Status (14)

Country Link
JP (1) JPS51125846A (en)
AT (1) AT354573B (en)
BE (1) BE837441A (en)
CH (1) CH598654A5 (en)
DE (2) DE2530381C3 (en)
DK (1) DK7076A (en)
ES (1) ES444172A1 (en)
FI (1) FI753703A7 (en)
FR (1) FR2297112A1 (en)
GB (1) GB1527032A (en)
IT (1) IT1054747B (en)
NL (1) NL7600106A (en)
NO (1) NO760062L (en)
SE (1) SE406680B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000799A1 (en) * 1979-09-11 1981-03-19 Commw Scient Ind Res Org A generator of high current pulses

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2519480A1 (en) * 1982-01-07 1983-07-08 Hamm Jean Jacques Temp. limiting appts. for battery chargers or welding sets - where resistor is embedded in transformer windings and connected to electronic circuit which prevents overheating of transformer
CH668842A5 (en) * 1982-06-10 1989-01-31 Elpatronic Ag DEVICE FOR CONTINUOUSLY CONTROLLING THE AMPLITUDE OF A SINUS-SHAPED ELECTRIC AC.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE930337C (en) * 1951-02-23 1955-07-14 Gen Electric Circuit arrangement for igniting a welding arc with increased amperage
DE1116331B (en) * 1958-06-06 1961-11-02 Siemens Ag Arc welding transformer of dormant design with stepless control of the welding current and automatically down-regulated open circuit voltage
US3251000A (en) * 1963-11-15 1966-05-10 Welding Research Inc Safety system for a sequence timing control
US3549979A (en) * 1969-04-25 1970-12-22 Chemetron Corp Arc power supply with current level control
DE2047821B2 (en) * 1970-09-29 1972-11-23 Kirsch Kg, 5500 Trier DEVICE FOR CONTINUOUS CURRENT ADJUSTMENT FOR WELDING TRANSFORMERS FOR ELECTRIC ARC WELDING
DE2121298A1 (en) * 1971-04-30 1972-12-28 Runschke W Current control, especially phase control for welding power sources, suitable for single-phase and multi-phase operation
DE2130324B2 (en) * 1971-06-18 1978-02-16 Süd-Elektronik Ing. Heinrich Kurz Transistorensteuerungen, 8240 Schönau Arc welding power supply unit - using transformer with two parallel prim. windings, one contg. a current control circuit
DE2130335A1 (en) * 1971-06-18 1972-12-21 Sued Elektronik Ing Heinrich K Welding current control unit for arc welding
DE2351652B2 (en) * 1973-10-15 1975-10-23 Messer Griesheim Gmbh, 6000 Frankfurt Circuit arrangement for phase control current control of an alternating current welding arc

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1981000799A1 (en) * 1979-09-11 1981-03-19 Commw Scient Ind Res Org A generator of high current pulses
US4459460A (en) * 1979-09-11 1984-07-10 Commonwealth Scientific And Industrial Research Organization Generator of high current pulses

Also Published As

Publication number Publication date
FR2297112B1 (en) 1981-09-04
JPS51125846A (en) 1976-11-02
FI753703A7 (en) 1976-07-11
FR2297112A1 (en) 1976-08-06
CH598654A5 (en) 1978-05-12
SE406680B (en) 1979-02-19
IT1054747B (en) 1981-11-30
AT354573B (en) 1979-01-10
BE837441A (en) 1976-05-03
NO760062L (en) 1976-07-13
NL7600106A (en) 1976-07-13
ATA9476A (en) 1979-06-15
DK7076A (en) 1976-07-11
ES444172A1 (en) 1977-05-01
DE2530381B2 (en) 1980-07-17
DE2600329A1 (en) 1976-07-15
DE2530381C3 (en) 1981-03-12
SE7600043L (en) 1976-07-12
DE2530381A1 (en) 1976-07-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee