KR890000198A - Control method and apparatus of power supply for arc welding - Google Patents

Control method and apparatus of power supply for arc welding Download PDF

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Publication number
KR890000198A
KR890000198A KR1019880007057A KR880007057A KR890000198A KR 890000198 A KR890000198 A KR 890000198A KR 1019880007057 A KR1019880007057 A KR 1019880007057A KR 880007057 A KR880007057 A KR 880007057A KR 890000198 A KR890000198 A KR 890000198A
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South Korea
Prior art keywords
current
output
setter
square wave
value
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KR1019880007057A
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Korean (ko)
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KR910006099B1 (en
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다까유끼 가시마
아끼라 사가베
요시후미 야마나까
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원본미기재
히다찌 세이꼬 가부시기 가이샤
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Publication of KR890000198A publication Critical patent/KR890000198A/en
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Publication of KR910006099B1 publication Critical patent/KR910006099B1/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/06Arrangements or circuits for starting the arc, e.g. by generating ignition voltage, or for stabilising the arc
    • B23K9/073Stabilising the arc
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23KSOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00Arc welding or cutting
    • B23K9/09Arrangements or circuits for arc welding with pulsed current or voltage
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS 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
    • H02M7/00Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/42Conversion of dc power input into ac power output without possibility of reversal
    • H02M7/44Conversion of dc power input into ac power output without possibility of reversal by static converters
    • H02M7/48Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Arc Welding Control (AREA)
  • Inverter Devices (AREA)

Abstract

내용 없음No content

Description

아크 용접용 전원의 제어방법 및 장치Control method and apparatus of power supply for arc welding

본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.

제1도는 본 발명의 제2의 발명을 구체화한 실시예의 블럭도,1 is a block diagram of an embodiment incorporating a second invention of the present invention,

제2도는 제1도중의 출력측 인버터부의 회로구성도,2 is a circuit diagram of the output side inverter unit in FIG.

제3도는 제1도중의 전류제어 회로의 구성도.3 is a configuration diagram of the current control circuit in FIG.

Claims (3)

입력측 인버터부의 고주파 교류출력을 강압정류하여 리액터와 콘덴서에 의하여 평활하게한 직류를 출력측 인버터부에서 극성 반전시켜 다시 교류로 변환하여 아크 부하에 공급하고, 입력측 인버터부에서 출력전류를 제어하는 아크용접용 전원에 있어서, 출력전류의 극성반전의 직전에 전류제어계의 전류설정치를 절환하므로서 출력전류치를 변환시켜 대략소정의 전류치가 되었을때의 극성반전을 행하도록 제어하는 것을 특징으로하는 아크 용접용 전원의 제어방법.Arc welding for direct-current rectifying the high frequency AC output of the input side inverter part, and converting the DC smoothed by the reactor and the capacitor to polarity at the output side inverter part, converting it back to AC and supplying it to the arc load, and controlling the output current at the input side inverter part. In the power supply, the control of the arc welding power supply, characterized in that the switching of the current setting value of the current control system immediately before the polarity inversion of the output current is performed so that the output current value is converted to perform the polarity inversion when the predetermined current value is reached. Way. 입력측 인버터부의 고주파 교류출력을 강압, 정류하여 리액터와 콘덴서에 의하여 평활하게한 직류를 출력측 인버터부에서 극성 반전시켜 다시 교류로 변환하여 아크 부하에 공급하고, 압력측 인버터부에서 출력전류를 제어하는 아크 용접용 전원에 있어서, 소정의 위상차를 가진 2개의 제어용 구형파신호를 발생하는 수단과, 정상의 출력 전류치를 설정하는 제1의 전류 설정기와, 극성 반전시의 출력 전류치를 설정하는 제2의 전류 설정기와, 상기 양 구형파신호중 진상의 구형파신호의 상승, 하강에 동기하여 전류 제어계의 출력 전류설정치를 상기 제1의 전류 설정기의 설정치로부터 상기 제2의 전류 설정기의 설정치로 이행시키는 전류 제어회로와, 상기 양 구형파신호중 지상, 구형파 신호의 상승, 하강에 동기하여 출력측 인버터부를 반전 동작시키는 구동회로를 구비하고, 출력 전류치가 상기 제2의 전류 설정기의 설정치와 대략 같아졌을때에 출력전류의 극성반전을 행하도록 한 것을 특징으로 하는 용접용 전원의 제어장치.The high frequency AC output of the input side inverter part is stepped down and rectified, and the DC which is smoothed by the reactor and the capacitor is reversed in polarity at the output side inverter part, converted to AC again, and supplied to the arc load, and the arc controlling the output current at the pressure side inverter part. A welding power supply comprising: means for generating two control square wave signals having a predetermined phase difference, a first current setter for setting a normal output current value, and a second current setter for setting an output current value at polarity inversion A current control circuit for shifting the output current set value of the current control system from the set value of the first current setter to the set value of the second current setter in synchronization with the rising and falling of the true square wave signal of the two square wave signals; Inverting the output side inverter unit in synchronization with the rising and falling of the ground and square wave signals, The drive circuit includes, and outputs the current value of the welding power control apparatus for, characterized in that the set point of the current setting of the second group to perform the inversion of polarity of the output current in time been approximately equal to a. 입력측 인버터부의 고주파 교류출력을 강압, 정류하고 리액터와 콘덴서에 의하여 평활하게한 직류를 출력측 인버터부에서 극성 반전시켜 다시 교류로 변환하여 아크 부하에 공급하고, 압력측 인버터부에서 출력전류를 제어하는 아크 용접용 전원에 있어서, 소정의 위상차를 가진 2개의 제어용 구형파신호를 발생하는 수단과, 정상의 출력 전류치를 설정하는 제1의 전류 설정기와 극성 반전시의 출력 전류치를 설정하는 제2의 전류 설정기와 ,상기 제2의 전류 설정기의 설정치보다 높은 극성반전시의 상한 전류치를 설정하는 제3의 전류설정기와, 상기 양 구형파신호중 진상의 구형파신호의 상승, 하강에 동기하여 전류 제어계의 출력 전류 설정치를 상기 제1의 전류설정기의 설정치로부터 상기 제2의 전류 설정기의 설정치로 이행시키는 전류 제어회로와, 상기 양 구형파신호중 지상, 구형파 신호의 상승, 하강에 동기하여 출력측 인버터부를 반전 동작시키는 구동회로와, 상기 양 구형파신호의 위상차에 상당하는 지연시간이 경과한 것을 나타내는 신호와 출력 전류치가 상기 제3의 전류 설정기에서 설정된 상한 전류치 이하인 것을 나타내는 신호와의 일치를 조건으로하여 상기 지상 구형파신호를 발생시켜 출력전류의 극성반전을 가능하게 하는 극성반전 규제수단을 구비하고, 출력전류치가 상기 제3의 전류 설정기에서 설정된 상한 전류치 이하가 아니면 극성반전을 행하지 않도록한 것을 특징으로하는 용접용 전원의 제어장치.The high frequency AC output of the input side inverter section is stepped down and rectified, and the direct current, which is smoothed by the reactor and the capacitor, is reversed in polarity at the output side inverter section, converted into alternating current and supplied to the arc load, and the arc controlling the output current at the pressure side inverter section. A welding power supply comprising: means for generating two control square wave signals having a predetermined phase difference, a first current setter for setting a normal output current value, and a second current setter for setting an output current value at polarity inversion; A third current setter for setting an upper limit current value at the time of polarity reversal higher than a set value of the second current setter, and an output current set value of the current control system in synchronization with the rising and falling of the square wave signal of the positive phase among the two square wave signals; A current control circuit for shifting from the set value of the first current setter to the set value of the second current setter; The driving circuit for inverting the output side inverter unit in synchronization with the rising and falling of the ground and square wave signals among the two square wave signals, and a signal indicating that the delay time corresponding to the phase difference between the two square wave signals have elapsed, and the output current value And a polarity inversion regulating means for generating the above ground square wave signal to enable polarity inversion of the output current, subject to agreement with a signal indicating that it is equal to or less than the upper limit current value set in the current setter, wherein the output current value is the third current. A control device for a welding power supply, characterized in that the polarity inversion is not performed unless it is less than or equal to the upper limit current set by the setter. ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.※ Note: The disclosure is based on the initial application.
KR1019880007057A 1987-06-15 1988-06-13 Inverter controlled type power source for arc welding KR910006099B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP62146952A JP2537516B2 (en) 1987-06-15 1987-06-15 Control method and apparatus for arc welding power source
JP87-146952 1987-06-15

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KR890000198A true KR890000198A (en) 1989-03-13
KR910006099B1 KR910006099B1 (en) 1991-08-13

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE531142C2 (en) * 2007-05-11 2009-01-07 Esab Ab Welding power units, procedure and computer software product
CN103618469B (en) * 2013-11-29 2015-10-28 上海沪工焊接集团股份有限公司 Inversion AC wave shape control method and control circuit
JP7106799B2 (en) * 2018-06-15 2022-07-27 株式会社ダイヘン welding power supply

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58112657A (en) * 1981-12-25 1983-07-05 Sansha Electric Mfg Co Ltd Arc welder

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JPS63313669A (en) 1988-12-21
KR910006099B1 (en) 1991-08-13
JP2537516B2 (en) 1996-09-25

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