DE1112796B - Device to achieve the required voltage characteristics for welding generators for arc welding - Google Patents
Device to achieve the required voltage characteristics for welding generators for arc weldingInfo
- Publication number
- DE1112796B DE1112796B DEK41380A DEK0041380A DE1112796B DE 1112796 B DE1112796 B DE 1112796B DE K41380 A DEK41380 A DE K41380A DE K0041380 A DEK0041380 A DE K0041380A DE 1112796 B DE1112796 B DE 1112796B
- Authority
- DE
- Germany
- Prior art keywords
- voltage
- welding
- achieve
- current
- characteristic
- 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.)
- Pending
Links
- 238000003466 welding Methods 0.000 title claims description 13
- 230000005284 excitation Effects 0.000 claims description 4
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000001419 dependent effect Effects 0.000 claims 2
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Control Of Eletrric Generators (AREA)
Description
Einrichtung zur Erreichung der benötigten Stromspannungs-Charakteristik für Schweißgeneratoren zum Lichtbogenschweißen Die Erfindung bezieht sich auf eine Einrichtung, die zur Erreichung der benötigten Stromspannungs-Charakteristik dient.Device to achieve the required voltage characteristic for welding generators for arc welding The invention relates to a Device that is used to achieve the required voltage characteristic.
Es ist bekannt, daß zum Schweißen mit Gleichstrom Generatoren mit einer stark bzwflach fallenden Stromspannungskennlinie benötig werden. Diese Eigenschaft wird normalerweise durch Querfeld-, Streufeld- oder Gegenverbundmaschinen erreicht, also Sonderbauarten, die meist einen erhöhten Materialaufwand erfordern.It is known that for welding with direct current generators with a strongly or gently falling current-voltage characteristic are required. This attribute is usually achieved by cross-field, stray field or counter-compound machines, that is, special designs that usually require an increased amount of material.
Aus diesem Grunde wurden bereits verschiedene Anordnungen vorgeschlagen, die es ermöglichen sollen, mit einem normal ausgerüsteten Generator die geforderten Eigenschaften zu erreichen. Hierzu gehören Schaltungen mit vormagnetischen Drosseln, teilweise in Verbindung mit einem Stoßspannungstransformator. Jedoch haben diese Schaltungen den Nachteil, daß durch den Aufbau eines zweiten magnetischen Kreises die Trägheit des Regelvorganges wesentlich vergrößert wird, was zu einer Verschlechterung der dynamischen Eigenschaften der Schweißmaschine führt.For this reason, various arrangements have already been proposed, which should make it possible to achieve the required with a normally equipped generator To achieve properties. This includes circuits with pre-magnetic chokes, partly in connection with a surge voltage transformer. However, these have Circuits have the disadvantage that by building a second magnetic circuit the inertia of the control process is significantly increased, which leads to a deterioration the dynamic properties of the welding machine.
Der Sinn des Erfindungsgedankens ist, diesen Nachteil zu vermeiden und außerdem eine leichte Einstellung der Stromspannungs-Charakteristik zu ermöglichen. Dabei ist besonders hervorzuheben, daß ein Einstellen der Schweißspannung und der Neigung der Stromspannungskennlinie in weiten Grenzen durch einfache Mittel erreicht werden soll. Erfindungsgemäß sollen die für einen Lichtbogen-Schweißgenerator charakteristischen Eigenschaften dadurch erreicht werden, daß dessen Erregerwicklung nicht wie üblich über normale Trockengleichrichter gespeist wird, sondern über an sich bekannte steuerbare Halbleiter-Gleichrichter fremd erregt wird.The idea behind the invention is to avoid this disadvantage and also allow easy adjustment of the voltage characteristic. It should be emphasized that setting the welding voltage and the Inclination of the voltage characteristic curve achieved within wide limits by simple means shall be. According to the invention, the characteristic of an arc welding generator Properties can be achieved in that its excitation winding is not as usual is fed via normal dry rectifiers, but via controllable ones known per se Semiconductor rectifier is externally excited.
Gemäß der Schaltskizze liegt die Erregerwicklung J-K über eine Anordnung steuerbarer Halbleiter-Gleichrichter GI an der galvanisch vom Netz getrennten Wechselspannung Ui.According to the circuit diagram, the excitation winding J-K lies over an arrangement controllable semiconductor rectifier GI on the alternating voltage, which is galvanically separated from the mains Ui.
Mit dem Spannungsteiler Rp, der an einer konstanten Gleichspannung liegt, wird eine bestimmte Steuerspannung Ust 1 eingestellt. Eine zweite Steuerspannung US, 2, die je nach Wahl der Kennlinie positiv oder negativ sein kann, liegt mit USt, in Reihe. A specific control voltage Ust 1 is set with the voltage divider Rp, which is connected to a constant DC voltage. A second control voltage US, 2, which can be positive or negative depending on the choice of the characteristic, is connected in series with USt.
Diese Spannung kann dem Strompfad entnommen werden oder generatorspannungsabhängig sein. Die Differenz oder die Summe dieser beiden Spannungen steuert dann den Gleichrichter und damit die Erregung, wodurch die gewünschte Kennlinie erreicht wird.This voltage can be taken from the current path or depending on the generator voltage be. The difference or the sum of these two voltages then controls the rectifier and thus the excitation, whereby the desired characteristic is achieved.
Claims (4)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK41380A DE1112796B (en) | 1960-08-05 | 1960-08-05 | Device to achieve the required voltage characteristics for welding generators for arc welding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DEK41380A DE1112796B (en) | 1960-08-05 | 1960-08-05 | Device to achieve the required voltage characteristics for welding generators for arc welding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE1112796B true DE1112796B (en) | 1961-08-17 |
Family
ID=7222391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DEK41380A Pending DE1112796B (en) | 1960-08-05 | 1960-08-05 | Device to achieve the required voltage characteristics for welding generators for arc welding |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE1112796B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1179656B (en) * | 1963-09-17 | 1964-10-15 | Knapsack Ag | Control device for direct current welding machines with pre-magnetized choke in the direct current welding circuit |
| DE1301208B (en) * | 1966-06-24 | 1969-08-14 | Mini Ind Constructillor | Device for reducing the voltage of a direct current welding generator when idling |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2740924A (en) * | 1951-07-05 | 1956-04-03 | Keefe & Merritt Company O | Dry plate type rectifier |
-
1960
- 1960-08-05 DE DEK41380A patent/DE1112796B/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2740924A (en) * | 1951-07-05 | 1956-04-03 | Keefe & Merritt Company O | Dry plate type rectifier |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1179656B (en) * | 1963-09-17 | 1964-10-15 | Knapsack Ag | Control device for direct current welding machines with pre-magnetized choke in the direct current welding circuit |
| DE1301208B (en) * | 1966-06-24 | 1969-08-14 | Mini Ind Constructillor | Device for reducing the voltage of a direct current welding generator when idling |
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