WO2001003874A1 - Generator for arc welding machines - Google Patents
Generator for arc welding machines Download PDFInfo
- Publication number
- WO2001003874A1 WO2001003874A1 PCT/EP2000/006536 EP0006536W WO0103874A1 WO 2001003874 A1 WO2001003874 A1 WO 2001003874A1 EP 0006536 W EP0006536 W EP 0006536W WO 0103874 A1 WO0103874 A1 WO 0103874A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- generator
- rectifier stage
- input rectifier
- diode
- current
- Prior art date
Links
Classifications
-
- 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
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0083—Converters characterised by their input or output configuration
- H02M1/0085—Partially controlled bridges
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/42—Circuits or arrangements for compensating for or adjusting power factor in converters or inverters
- H02M1/4208—Arrangements for improving power factor of AC input
- H02M1/4225—Arrangements for improving power factor of AC input using a non-isolated boost converter
-
- 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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
- H02M1/007—Plural converter units in cascade
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Definitions
- the present invention relates to a generator for arc welding machines which has an input rectifier stage capable of absorbing a practically sinusoidal current from the AC mains power supply.
- the generator according to the invention is of the electronic type.
- a classic layout for a generator for arc- welding machines is the one shown in Figure 1, which provides for the presence of a rectifier stage 1 followed by a block 2 with clamping capacitors to which an inverter block with high-frequency electronic switches 3 is connected; the inverter block drives a transformer 4 whose secondary winding supplies a rectifier stage 5 which, by means of an inductor 6 for clamping the output current, supplies a welding arc 7.
- a generator of this type absorbs from the mains, during operation, a current whose waveform has a high harmonic content, such as the one shown in Figure 2.
- FIG. 3 shows, with respect to the diagram of Figure 1, the addition of a stage, designated by the reference numeral 7, which is interposed between the rectifier block and the clamping block.
- This stage known as BOOST-type PFC, comprises an inductor 71, an electronic switch 72 and a diode 73 arranged as shown.
- the switch 72 is controlled by means of an appropriate block 74 which allows to render the absorption of the generator sinusoidal, as plotted in Figure 4.
- the aim of the present invention is to provide a generator for arc-welding machines which overcomes the above-cited problems, particularly as regards the optimization of operation and efficiency.
- a primary object of the present invention is to provide a circuit for the generator which reduces the number of electronic components, in order to reduce costs and improve efficiency.
- Figure 1 is a typical block diagram of a generator for welding machines, with mains-side absorption characterized by the presence of strong harmonics;
- Figure 2 plots the current absorbed by the generator of Figure 1 ;
- Figure 3 is a typical block diagram of a generator according to the state of the art, with a control stage for absorbing, on the mains side, current with a sinusoidal waveform;
- Figure 4 plots the current absorbed by the generator of Figure 3;
- FIG. 5 is a block diagram of the generator according to the present invention.
- Figure 6 is a simplified diagram of the input rectifier stage of the generator of Figure 5, in the case of single-phase power supply;
- Figure 7 is a simplified diagram of the input rectifier stage of the generator of the kind shown in Figure 5, in the case of three-phase power supply;
- Figure 8 is a detailed diagram of the stage of Figure 6, illustrating the path of the current
- Figure 9 is a detailed diagram of the rectifier stage and of the control stage of a conventional generator, of the type shown in Figure 3, illustrating the path of the current, for comparison with what is shown in Figure 8. Ways of carrying out the invention
- the generator is composed of a set of blocks which in Figure 5 are desi nated as input rectifier stage 101, capacitor clamping stage 102, inverter stage with fast electronic switches 103, current transformer 104, and power supply stage 105 for the welding arc 106.
- the part that characterizes the generator lies in the input rectifier stage 101, which is shown in detail in Figures 6, 7 and 8.
- the input stage 101 is shown in a first detail and relates to a generator with single-phase power supply.
- an inductor 107 which is directly connected to the mains input 108.
- the inductor 107 is followed by two diodes 109 and 110 which are interconnected in opposition, each diode being served by an electronic switch, respectively designated by the reference numerals 111 and 112.
- the outputs 113 and 114 supply the clamping capacitor stage 102.
- Each one of the inductors is followed by a respective diode 119, 120 and 121, each of which is served by an electronic switch, designated by the reference numerals 122, 123 and 124 respectively.
- Figure 8 shows in greater detail the structure of the input rectifier stage, further illustrating the driver 125 which acts on the switches 111 and 112.
- the current flows across the inductor 107, the diode 109, the capacitors 102 and the switch 112, which is closed.
- FIG. 9 shows the circuit that corresponds to the generator of Figure 3, which comprises a rectifier bridge with four diodes 201, 202, 203 and 204, an inductor 205 located downstream of the bridge with respect to the mains input 206, a further diode 207, a clamping capacitor 208 and a switch 209 controlled by a driver 210.
- the current flows across the diode 201, the diode 207, the capacitors 208 and the diode 204.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Arc Welding Control (AREA)
- Rectifiers (AREA)
- Arc Welding In General (AREA)
- Generation Of Surge Voltage And Current (AREA)
- Dc-Dc Converters (AREA)
- Processing Of Terminals (AREA)
Abstract
Description
Claims
Priority Applications (14)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
BR0006921-3A BR0006921A (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
DK00954462T DK1113900T3 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
JP2001509334A JP2003504210A (en) | 1999-07-13 | 2000-07-10 | Arc welder generator |
SI200030279T SI1113900T1 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
EP00954462A EP1113900B1 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
AU66912/00A AU770162B2 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
HU0103738A HU223161B1 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
PL00346587A PL195477B1 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
MXPA01002605A MXPA01002605A (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines. |
DE60005475T DE60005475T2 (en) | 1999-07-13 | 2000-07-10 | SUPPLY UNIT FOR ARC WELDING |
CA002343329A CA2343329C (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
AT00954462T ATE250479T1 (en) | 1999-07-13 | 2000-07-10 | SUPPLY UNIT FOR ARC WELDING |
US09/614,560 US6570128B1 (en) | 1999-07-13 | 2000-07-12 | Generator for arc welding machines |
NO20011240A NO325044B1 (en) | 1999-07-13 | 2001-03-12 | Generator for arc welding apparatus |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT1999PD000159A IT1307203B1 (en) | 1999-07-13 | 1999-07-13 | GENERATOR FOR ARC WELDING EQUIPMENT |
ITPD99A000159 | 1999-07-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001003874A1 true WO2001003874A1 (en) | 2001-01-18 |
Family
ID=11392682
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2000/006536 WO2001003874A1 (en) | 1999-07-13 | 2000-07-10 | Generator for arc welding machines |
Country Status (18)
Country | Link |
---|---|
US (1) | US6570128B1 (en) |
EP (1) | EP1113900B1 (en) |
JP (1) | JP2003504210A (en) |
CN (1) | CN1196560C (en) |
AT (1) | ATE250479T1 (en) |
AU (1) | AU770162B2 (en) |
BR (1) | BR0006921A (en) |
CA (1) | CA2343329C (en) |
CZ (1) | CZ301980B6 (en) |
DE (1) | DE60005475T2 (en) |
DK (1) | DK1113900T3 (en) |
ES (1) | ES2207542T3 (en) |
HU (1) | HU223161B1 (en) |
IT (1) | IT1307203B1 (en) |
MX (1) | MXPA01002605A (en) |
NO (1) | NO325044B1 (en) |
PL (1) | PL195477B1 (en) |
WO (1) | WO2001003874A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003008141A1 (en) * | 2001-07-19 | 2003-01-30 | Selco S.R.L. | Generator for unitary power factor arc welders |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CZ297139B6 (en) * | 2002-09-03 | 2006-09-13 | Transformer welding machine | |
ITPD20030027A1 (en) * | 2003-02-14 | 2004-08-15 | Selco Srl | GENERATOR FOR ARC WELDER WITH HIGH POWER FACTOR |
US7596002B2 (en) * | 2004-06-25 | 2009-09-29 | General Electric Company | Power conversion system and method |
US8269141B2 (en) | 2004-07-13 | 2012-09-18 | Lincoln Global, Inc. | Power source for electric arc welding |
US9956639B2 (en) * | 2005-02-07 | 2018-05-01 | Lincoln Global, Inc | Modular power source for electric ARC welding and output chopper |
US8581147B2 (en) * | 2005-03-24 | 2013-11-12 | Lincoln Global, Inc. | Three stage power source for electric ARC welding |
US8785816B2 (en) * | 2004-07-13 | 2014-07-22 | Lincoln Global, Inc. | Three stage power source for electric arc welding |
US9855620B2 (en) | 2005-02-07 | 2018-01-02 | Lincoln Global, Inc. | Welding system and method of welding |
US9647555B2 (en) | 2005-04-08 | 2017-05-09 | Lincoln Global, Inc. | Chopper output stage for arc welder power source |
CN102218583B (en) * | 2010-04-16 | 2013-10-16 | 深圳市佳士科技股份有限公司 | Inverter welding machine major loop with PFC (Power Factor Correction) function |
US20160065079A1 (en) * | 2014-09-03 | 2016-03-03 | Kettering University | Power transfer system |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0449467A1 (en) * | 1990-03-26 | 1991-10-02 | Powcon Incorporated | Apparatus employing a welding power supply for powering a plasma cutting torch |
EP0602495A1 (en) * | 1992-12-18 | 1994-06-22 | SELCO S.r.L. | Resonant-load power supply for arc welding |
WO1997001211A1 (en) * | 1995-06-23 | 1997-01-09 | University Of Warwick | Load resonant converters |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH03265467A (en) * | 1990-03-12 | 1991-11-26 | Fuji Electric Co Ltd | Three-phase converter circuit |
FR2742013B1 (en) * | 1995-11-30 | 1998-03-27 | Sgs Thomson Microelectronics | METHOD AND DEVICE FOR LIMITING THE CURRENT CALL OF A CAPACITOR ASSOCIATED WITH A RECTIFIER |
JPH11299245A (en) * | 1998-04-15 | 1999-10-29 | Hitachi Ltd | Control method of converter |
US6115267A (en) * | 1998-06-09 | 2000-09-05 | Herbert; Edward | AC-DC converter with no input rectifiers and power factor correction |
US6023037A (en) * | 1998-11-05 | 2000-02-08 | Lincoln Global, Inc. | Electric ARC welder and plasma cutter |
-
1999
- 1999-07-13 IT IT1999PD000159A patent/IT1307203B1/en active
-
2000
- 2000-07-10 EP EP00954462A patent/EP1113900B1/en not_active Expired - Lifetime
- 2000-07-10 CZ CZ20010913A patent/CZ301980B6/en not_active IP Right Cessation
- 2000-07-10 AU AU66912/00A patent/AU770162B2/en not_active Expired
- 2000-07-10 PL PL00346587A patent/PL195477B1/en unknown
- 2000-07-10 CA CA002343329A patent/CA2343329C/en not_active Expired - Lifetime
- 2000-07-10 CN CNB008013772A patent/CN1196560C/en not_active Expired - Lifetime
- 2000-07-10 JP JP2001509334A patent/JP2003504210A/en active Pending
- 2000-07-10 BR BR0006921-3A patent/BR0006921A/en not_active Application Discontinuation
- 2000-07-10 HU HU0103738A patent/HU223161B1/en not_active IP Right Cessation
- 2000-07-10 WO PCT/EP2000/006536 patent/WO2001003874A1/en active IP Right Grant
- 2000-07-10 DE DE60005475T patent/DE60005475T2/en not_active Expired - Lifetime
- 2000-07-10 ES ES00954462T patent/ES2207542T3/en not_active Expired - Lifetime
- 2000-07-10 AT AT00954462T patent/ATE250479T1/en active
- 2000-07-10 MX MXPA01002605A patent/MXPA01002605A/en active IP Right Grant
- 2000-07-10 DK DK00954462T patent/DK1113900T3/en active
- 2000-07-12 US US09/614,560 patent/US6570128B1/en not_active Expired - Lifetime
-
2001
- 2001-03-12 NO NO20011240A patent/NO325044B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0449467A1 (en) * | 1990-03-26 | 1991-10-02 | Powcon Incorporated | Apparatus employing a welding power supply for powering a plasma cutting torch |
EP0602495A1 (en) * | 1992-12-18 | 1994-06-22 | SELCO S.r.L. | Resonant-load power supply for arc welding |
WO1997001211A1 (en) * | 1995-06-23 | 1997-01-09 | University Of Warwick | Load resonant converters |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003008141A1 (en) * | 2001-07-19 | 2003-01-30 | Selco S.R.L. | Generator for unitary power factor arc welders |
CN100381242C (en) * | 2001-07-19 | 2008-04-16 | 赛尔柯有限公司 | Generator for unitary power factor arc welders |
Also Published As
Publication number | Publication date |
---|---|
ITPD990159A1 (en) | 2001-01-13 |
NO325044B1 (en) | 2008-01-21 |
DE60005475D1 (en) | 2003-10-30 |
CA2343329C (en) | 2009-01-13 |
HUP0103738A2 (en) | 2002-05-29 |
IT1307203B1 (en) | 2001-10-29 |
AU6691200A (en) | 2001-01-30 |
DK1113900T3 (en) | 2004-02-02 |
PL346587A1 (en) | 2002-02-11 |
JP2003504210A (en) | 2003-02-04 |
NO20011240D0 (en) | 2001-03-12 |
MXPA01002605A (en) | 2002-04-08 |
EP1113900B1 (en) | 2003-09-24 |
ES2207542T3 (en) | 2004-06-01 |
CN1316934A (en) | 2001-10-10 |
CA2343329A1 (en) | 2001-01-18 |
US6570128B1 (en) | 2003-05-27 |
DE60005475T2 (en) | 2004-05-06 |
CZ301980B6 (en) | 2010-08-25 |
BR0006921A (en) | 2001-07-31 |
ATE250479T1 (en) | 2003-10-15 |
PL195477B1 (en) | 2007-09-28 |
NO20011240L (en) | 2001-03-12 |
AU770162B2 (en) | 2004-02-12 |
CZ2001913A3 (en) | 2002-03-13 |
CN1196560C (en) | 2005-04-13 |
HU223161B1 (en) | 2004-03-29 |
EP1113900A1 (en) | 2001-07-11 |
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