CN105562888B - System is limited based on the welding machine rated power for suppressing double PI - Google Patents
System is limited based on the welding machine rated power for suppressing double PI Download PDFInfo
- Publication number
- CN105562888B CN105562888B CN201610056475.1A CN201610056475A CN105562888B CN 105562888 B CN105562888 B CN 105562888B CN 201610056475 A CN201610056475 A CN 201610056475A CN 105562888 B CN105562888 B CN 105562888B
- Authority
- CN
- China
- Prior art keywords
- resistor
- circuit
- operational amplifier
- voltage
- diode
- 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.)
- Active
Links
- 238000003466 welding Methods 0.000 title claims abstract description 51
- 230000033228 biological regulation Effects 0.000 claims abstract description 12
- 239000003990 capacitor Substances 0.000 claims description 30
- 230000000087 stabilizing effect Effects 0.000 claims description 24
- 230000000670 limiting effect Effects 0.000 claims description 12
- 238000005070 sampling Methods 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000001914 filtration Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 230000002829 reductive effect Effects 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 230000002401 inhibitory effect Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 239000002699 waste material Substances 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
-
- 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
- B23K9/16—Arc welding or cutting making use of shielding gas
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
- Arc Welding Control (AREA)
Abstract
The invention provides a kind of based on the welding machine rated power limitation system for suppressing double PI, including：Wave filtering circuit, mu balanced circuit, comparison circuit, current loop circuit, inverter PI output circuits, wire-feed motor constant voltage circuit, wire feeding circuit PI regulation circuits；Comparison circuit is according to average current value If current signal Igs corresponding with the current value Is of setting size output, the current loop circuit provides given current signal Iset, and the inverter PI output circuits export the electric current Ie by limitation according to current signal Ig and current signal Iset value；The wire-feed motor constant voltage circuit exports given voltage Vs according to voltage feedback value Vf and current signal Ig, and the wire feeding circuit PI regulation circuits export the voltage Ve by limitation according to voltage Vs value.The present invention can suppress constant current ring PI and wire feeding circuit PI, successfully solve gas-shielded welder the problem of peak power output is inconsistent under different string diameters.
Description
Technical Field
The invention relates to a control technology of a welding machine, in particular to a welding machine rated power limiting system based on double PI inhibition.
Background
With the increasing occupancy of gas shielded welders in the metal product processing industry, welders find that the maximum rated output of the welder is often obtained when welding with a thicker wire diameter, taking a common NB-250 gas shielded welder as an example, the welder can weld 250A current when using 1.0 welding wire, but the maximum output current is only 180 plus 190A when using 0.8 welding wire, which results in that the welder who wants to weld 250A current with 0.8 wire must use 350A welder, and the current output 250A of NB-250 welder is not problematic in terms of power device selection of the welder itself. The reason is that when the wire feeding speed is increased to enable the 0.8 welding wire to weld 250A of current, the current exceeds 300A when the 1.0 welding wire is used, the welding machine has the risk of IGBT damage or top wire explosion caused by insufficient output power of the welding machine, so that the risk of damage of the welding machine is increased, and the welding manufacturability is extremely poor, so that a welding machine technician can only reduce the maximum wire feeding speed of the welding machine to enable the maximum wire feeding speed to meet the standard that the 1.0 welding wire is 250A, and the maximum current is only 190A when the 0.8 welding wire is welded, which causes great waste of welding power when the 0.8 welding wire is welded.
Disclosure of Invention
In view of the defects in the prior art, the invention aims to provide a welding machine rated power limiting system based on inhibiting double PI.
The invention provides a welding machine rated power limiting system based on inhibiting double PI, which is characterized by comprising the following components: the wire feeder comprises a sampling filter circuit, a voltage stabilizing circuit, a comparison circuit, a current loop circuit, an inverter PI output circuit, a wire feeder constant voltage circuit and a wire feeder PI regulating circuit; wherein,
the sampling filter circuit collects the average current value If of the current output of the welding machine and transmits the average current value If to the first input end of the comparison circuit;
the voltage stabilizing circuit provides a set current value Is (namely an action threshold value) and transmits the set current value to a second input end of the comparison circuit;
the comparison circuit outputs a corresponding current signal Ig according to the magnitude of the average current value If and the set current value Is, and transmits the current signal Ig to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI;
-the current loop circuit provides a given current signal Iset and delivers the current signal Iset to the inverter PI output circuit;
-the inverter PI output circuit outputs a limited current Ie depending on the values of the current signal Ig and the current signal Iset;
-said constant wire feeder voltage circuit outputting a given voltage Vs according to a feedback wire voltage Vf and a current signal Ig and delivering said given voltage Vs to a wire feeder PI regulation circuit;
the wire feed circuit PI regulation circuit outputs a limited voltage Ve as a function of the value of the set voltage Vs and the wire feed set voltage Vg.
Preferably, the voltage stabilizing circuit comprises: the circuit comprises a resistor R147, a resistor R149, a resistor R150, a resistor R66, a zener diode U12 and a capacitor C49, wherein one end of the resistor R149 is connected to a positive voltage end, and the other end of the resistor R149 is respectively connected with one end of a resistor R66, the cathode of the zener diode, one end of the resistor R147 and one end of a capacitor C49; the other end of the resistor R147 is connected with one end of the resistor R150 and the control end of the voltage-stabilizing diode respectively, and the other end of the resistor R150, the other end of the capacitor C49 and the anode of the voltage-stabilizing diode are all grounded; the other end of the resistor R66 forms an output port of the voltage stabilizing circuit and is connected to a second input end of the comparison circuit.
Preferably, the comparison circuit includes: the operational amplifier U8A and the capacitor C45, wherein the non-inverting input end of the operational amplifier U8A forms the first input end of the comparison circuit and is connected to the sampling filter circuit, and the inverting input end of the operational amplifier U8A forms the second input end of the comparison circuit and is connected to the voltage stabilizing circuit; the inverting input end of the operational amplifier U8A is connected to the output end of the operational amplifier U8A through a capacitor C45, the positive power supply end of the operational amplifier U8A is connected with 15V, and the negative power supply end of the operational amplifier U8A is connected with ground; the output end of the operational amplifier U8A is respectively connected to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI.
Preferably, the inverter PI output circuit includes: the circuit comprises a resistor R39, a resistor R94, a resistor R96, a resistor R113, a resistor R146, a resistor R151, a resistor R152, a diode D47, an operational amplifier U9A, an operational amplifier U9B, a voltage stabilizing diode D50 and a capacitor C28, wherein one end of the resistor R39 is connected to a first input end of a comparison circuit, and the other end of the resistor R39 is respectively connected to one end of the resistor R151, one end of the resistor R146, one end of the resistor R113, the anode of the voltage stabilizing diode D50 and the inverting input end of the operational amplifier U9A; the other end of the resistor R151 is connected to the cathode of a diode D47, and the anode of the diode D47 is connected to the output end of the comparison circuit; the other end of the resistor R146 is respectively connected to one end of a resistor R94 and the output end of an operational amplifier U9B, the other end of the resistor R94 is respectively connected to the inverting input end of the operational amplifier U9B and one end of a resistor R96, the other end of the resistor R96 is connected to a current loop circuit, and the non-inverting input end of the operational amplifier U9B is grounded; the negative electrode of the voltage stabilizing diode D50 is connected to one end of a resistor R152, the other end of the resistor R113 is connected to one end of the resistor R152 through a capacitor C28, the output end of the operational amplifier U9A is connected to one end of the resistor R152, the non-inverting input end of the operational amplifier U9A is grounded, and the positive power supply end and the negative power supply end of the operational amplifier U9A are respectively connected to the positive voltage end and the negative voltage end; the other end of the resistor R152 outputs a limited current Ie.
Preferably, the wire feeder constant voltage circuit includes: the diode D56, the resistor R30, the resistor R62, the resistor R80, the variable resistor W3, the zener diode Z4 and the operational amplifier U2D, wherein the anode of the diode D56 is connected to the output end of the comparison circuit, and the cathode of the diode D56 is respectively connected to one end of the resistor R30, one end of the variable resistor W3, the cathode of the zener diode Z4 and the inverting input end of the operational amplifier U2D through a resistor R80; the other end of the variable resistor W3 is connected to the output end of the operational amplifier U2D through a resistor R62, the anode of the zener diode Z4 is connected to the output end of the operational amplifier U2D, the non-inverting input end of the operational amplifier U2D is grounded, the output end of the operational amplifier U2D outputs a given voltage Vs, and the other end of the resistor R30 receives a voltage feedback value Vf.
Preferably, the wire feeder circuit PI regulation circuit includes: a resistor R10, a resistor R21, a diode V18, a diode V19, a zener diode Z6, a capacitor C20 and an operational amplifier U2B, wherein the cathode of the diode V18 receives a given voltage Vs and is respectively connected to the anode of the diode V19, one end of a resistor R21, one end of the capacitor C20, the cathode of the zener diode Z6 and the inverting input end of the operational amplifier U2B, the anode of the zener diode Z6 is connected to the other end of the capacitor C20 through the resistor R10, the anode of the zener diode Z6 is connected to the output end of the operational amplifier U2B, and the non-inverting input end of the operational amplifier U2B, the anode of the diode V18 and the cathode of the diode V19 are all grounded; the other end of the resistor R21 is connected with a wire feeding given voltage Vg, and the output end of the operational amplifier U2B outputs a limited voltage Ve.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention inhibits the constant current loop PI and the wire feeding circuit PI by sampling and judging the average current, successfully solves the problem that the maximum output power of the gas shielded welding machine is inconsistent under different wire diameters, and leads the gas shielded welding machine to output the same power under the condition of using different wire diameters.
2. The method is applied to the cooperative control of the inverter and the wire feeder when the maximum rated output of the gas shielded welding machine is output, realizes the accurate control of the maximum rated power output of the welding machine, reduces the power loss and simultaneously ensures the normal use of the welding machine.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic circuit diagram of a dual PI suppression based welder rated power limiting system provided by the invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
The invention provides a solution according to the defects of the gas-shielded welding machine on the market at present, by sampling a filtered current signal (the signal can be regarded as the average current output by the current welding machine), comparing the signal If with a set signal Is, and outputting a high signal Ig when the sampled current signal If Is larger than the set signal Is, the purpose of inhibiting the constant current loop PI of the welding machine Is achieved because the signal and the current feedback signal If are in the same direction, so that the output power of an inverter of the welding machine Is reduced, and at the moment, If no other measures are taken, in the actual welding process, because the output power Is reduced and the wire feeding speed Is not changed, the phenomena of top wire explosion and the like occur to lead the welding process to be extremely poor. The Ig signal is also output to the wire feeding circuit PI regulating circuit, and the Ig signal and the output voltage feedback signal Vf of the wire feeding circuit are in the same direction, so that the output of the wire feeding circuit PI is inhibited, the wire feeding speed is reduced, and the top wire explosion phenomenon does not occur.
Specifically, the invention provides a welding machine rated power limiting system based on inhibiting double PI, which comprises: the wire feeder comprises a sampling filter circuit, a voltage stabilizing circuit, a comparison circuit, a current loop circuit, an inverter PI output circuit, a wire feeder constant voltage circuit and a wire feeder PI regulating circuit; wherein,
the sampling filter circuit collects the average current value If of the current output of the welding machine and transmits the average current value If to the first input end of the comparison circuit;
the voltage stabilizing circuit provides a set current value Is and supplies the set current value to a second input end of the comparison circuit;
the comparison circuit outputs a corresponding current signal Ig according to the magnitude of the average current value If and the set current value Is, and transmits the current signal Ig to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI;
-the current loop circuit provides a given current signal Iset and delivers the current signal Iset to the inverter PI output circuit;
-the inverter PI output circuit outputs a limited current Ie depending on the values of the current signal Ig and the current signal Iset;
the constant voltage circuit of the wire feeder outputs a given voltage Vs according to the voltage feedback value Vf and the current signal Ig, and supplies the given voltage Vs to the wire feeder PI regulation circuit;
the wire feed circuit PI regulation circuit outputs a limited voltage Ve as a function of the value of the set voltage Vs and the wire feed set voltage Vg.
The voltage stabilizing circuit comprises: the circuit comprises a resistor R147, a resistor R149, a resistor R150, a resistor R66, a zener diode U12 and a capacitor C49, wherein one end of the resistor R149 is connected to a positive voltage end, and the other end of the resistor R149 is respectively connected with one end of a resistor R66, the cathode of the zener diode, one end of the resistor R147 and one end of a capacitor C49; the other end of the resistor R147 is connected with one end of the resistor R150 and the control end of the voltage-stabilizing diode respectively, and the other end of the resistor R150, the other end of the capacitor C49 and the anode of the voltage-stabilizing diode are all grounded; the other end of the resistor R66 forms an output port of the voltage stabilizing circuit and is connected to a second input end of the comparison circuit.
The comparison circuit includes: the operational amplifier U8A and the capacitor C45, wherein the non-inverting input end of the operational amplifier U8A forms the first input end of the comparison circuit and is connected to the sampling filter circuit, and the inverting input end of the operational amplifier U8A forms the second input end of the comparison circuit and is connected to the voltage stabilizing circuit; the inverting input end of the operational amplifier U8A is connected to the output end of the operational amplifier U8A through a capacitor C45, the negative power supply end of the operational amplifier U8A is grounded, and the positive power supply end of the operational amplifier U8A is connected to a positive 15V voltage end; the output end of the operational amplifier U8A is respectively connected to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI.
The inverter PI output circuit includes: the circuit comprises a resistor R39, a resistor R94, a resistor R96, a resistor R113, a resistor R146, a resistor R151, a resistor R152, a diode D47, an operational amplifier U9A, an operational amplifier U9B, a voltage stabilizing diode D50 and a capacitor C28, wherein one end of the resistor R39 is connected to a first input end of a comparison circuit, and the other end of the resistor R39 is respectively connected to one end of the resistor R151, one end of the resistor R146, one end of the resistor R113, the anode of the voltage stabilizing diode D50 and the inverting input end of the operational amplifier U9A; the other end of the resistor R151 is connected to the cathode of a diode D47, and the anode of the diode D47 is connected to the output end of the comparison circuit; the other end of the resistor R146 is respectively connected to one end of a resistor R94 and the output end of an operational amplifier U9B, the other end of the resistor R94 is respectively connected to the inverting input end of the operational amplifier U9B and one end of a resistor R96, the other end of the resistor R96 is connected to a current loop circuit, and the non-inverting input end of the operational amplifier U9B is grounded; the negative electrode of the voltage stabilizing diode D50 is connected to one end of a resistor R152, the other end of the resistor R113 is connected to one end of the resistor R152 through a capacitor C28, the output end of the operational amplifier U9A is connected to one end of the resistor R152, the non-inverting input end of the operational amplifier U9A is grounded, and the positive power supply end and the negative power supply end of the operational amplifier U9A are respectively connected to the positive voltage end and the negative voltage end; the other end of the resistor R152 outputs a limited current Ie.
The constant voltage circuit of the wire feeder comprises: the diode D56, the resistor R30, the resistor R62, the resistor R80, the variable resistor W3, the zener diode Z4 and the operational amplifier U2D, wherein the anode of the diode D56 is connected to the output end of the comparison circuit, and the cathode of the diode D56 is respectively connected to one end of the resistor R30, one end of the variable resistor W3, the cathode of the zener diode Z4 and the inverting input end of the operational amplifier U2D through a resistor R80; the other end of the variable resistor W3 is connected to the output end of the operational amplifier U2D through a resistor R62, the anode of the zener diode Z4 is connected to the output end of the operational amplifier U2D, the non-inverting input end of the operational amplifier U2D is grounded, the output end of the operational amplifier U2D outputs a given voltage Vs, and the other end of the resistor R30 receives a voltage feedback value Vf.
The wire feed circuit PI regulation circuit includes: a resistor R10, a resistor R21, a diode V18, a diode V19, a zener diode Z6, a capacitor C20 and an operational amplifier U2B, wherein the cathode of the diode V18 receives a given voltage Vs and is respectively connected to the anode of the diode V19, one end of a resistor R21, one end of the capacitor C20, the cathode of the zener diode Z6 and the inverting input end of the operational amplifier U2B, the anode of the zener diode Z6 is connected to the other end of the capacitor C20 through the resistor R10, the anode of the zener diode Z6 is connected to the output end of the operational amplifier U2B, and the non-inverting input end of the operational amplifier U2B, the anode of the diode V18 and the cathode of the diode V19 are all grounded; the other end of the resistor R21 is connected with a wire feeding given voltage Vg, and the output end of the operational amplifier U2B outputs a limited voltage Ve.
Specifically, the implementation process of the principle of the present invention first illustrates that the rated current output by the welding machine is adjusted according to the small-wire-diameter welding wire in the debugging process of the welding machine, that is, the small-wire-diameter welding wire is used to output the rated current almost exactly when the wire feeding speed of the wire feeder is the maximum, which means that when the slightly larger-wire-diameter welding wire is selected, the top wire is blown or the current is far over-rated, and at this time, the rated current limited by the current in the welding process of the larger wire diameter is realized through the design of fig. 1, and the phenomenon of top wire or blown is not generated.
In fig. 1, a signal Is a desired set current value provided by a precision voltage stabilizing circuit, i.e., a rated value of output current of a welding machine, If Is a feedback current value of the output current, Iset Is a given current value of a current loop, Ie Is an output current of an inverter PI, Ig Is a judgment value exceeding the rated current, Vf Is a voltage feedback value of a constant voltage circuit of a wire feeder, Vs Is a sum output of voltage feedback Vf and Ig of the wire feeder, Vg Is a given voltage of a wire feeder, and Ve Is an output voltage of the constant voltage PI of the wire feeder.
When a welding wire with a larger wire diameter Is selected for welding, If Is greater than Is, Ig Is high, and because Ig and If are in the same direction, PI output Ie of the inverter Is reduced, and the inverter starts to limit power output. At the moment, if no other measures are added, although the current is limited so that the current does not exceed the rated output, the wire feeding speed is unchanged due to the reduction of the inverter power at the welding arc, and the process defects such as the explosion of the top wire and the like are inevitably caused. Therefore, while the high signal Ig acts on the inverter PI, the feedback summation of the D56 and R80 and the wire feeding voltage is used for outputting Vs, so that the Vs is increased, Ve is reduced in the constant voltage PI calculation of the wire feeder participating in the wire feeding voltage Vg, the wire feeding voltage is inhibited, the wire feeding speed is reduced, and wire jacking and explosion are avoided. Finally, the power output of the inverter and the wire feeding speed reach a balance value, and the judgment standard Is the set rated output current. Therefore, when the welding wire Is applied to a welding machine, the maximum output of the welding machine Is the rated value set by Is no matter what wire diameter Is used, and the welding machine automatically matches the maximum wire feeding speed according to Is.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A dual PI inhibited based welder rated power limiting system, comprising: the wire feeder comprises a sampling filter circuit, a voltage stabilizing circuit, a comparison circuit, a current loop circuit, an inverter PI output circuit, a wire feeder constant voltage circuit and a wire feeder PI regulating circuit; wherein,
the sampling filter circuit collects the average current value If of the current output of the welding machine and transmits the average current value If to the first input end of the comparison circuit;
the voltage stabilizing circuit provides a set current value Is and supplies the set current value to a second input end of the comparison circuit;
the comparison circuit outputs a corresponding current signal Ig according to the magnitude of the average current value If and the set current value Is, and transmits the current signal Ig to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI;
-the current loop circuit provides a given current signal Iset and delivers the current signal Iset to the inverter PI output circuit;
-the inverter PI output circuit outputs a limited current Ie depending on the values of the current signal Ig and the current signal Iset;
-said constant wire feeder voltage circuit outputting a given voltage Vs according to a feedback wire voltage Vf and a current signal Ig and delivering said given voltage Vs to a wire feeder PI regulation circuit;
the wire feed circuit PI regulation circuit outputs a limited voltage Ve as a function of the value of the set voltage Vs and the wire feed set voltage Vg.
2. The system of claim 1, wherein the regulation circuit comprises: the circuit comprises a resistor R147, a resistor R149, a resistor R150, a resistor R66, a zener diode U12 and a capacitor C49, wherein one end of the resistor R149 is connected to a positive voltage end, and the other end of the resistor R149 is respectively connected with one end of a resistor R66, the cathode of the zener diode, one end of the resistor R147 and one end of a capacitor C49; the other end of the resistor R147 is connected with one end of the resistor R150 and the control end of the voltage-stabilizing diode respectively, and the other end of the resistor R150, the other end of the capacitor C49 and the anode of the voltage-stabilizing diode are all grounded; the other end of the resistor R66 forms an output port of the voltage stabilizing circuit and is connected to a second input end of the comparison circuit.
3. The dual PI inhibited welder rated power limiting system of claim 1, wherein the comparison circuit comprises: the operational amplifier U8A and the capacitor C45, wherein the non-inverting input end of the operational amplifier U8A forms the first input end of the comparison circuit and is connected to the sampling filter circuit, and the inverting input end of the operational amplifier U8A forms the second input end of the comparison circuit and is connected to the voltage stabilizing circuit; the inverting input end of the operational amplifier U8A is connected to the output end of the operational amplifier U8A through a capacitor C45, the positive power supply end of the operational amplifier U8A is connected with 15V, and the negative power supply end of the operational amplifier U8A is connected with ground; the output end of the operational amplifier U8A is respectively connected to the constant voltage circuit of the wire feeder and the output circuit of the inverter PI.
4. The dual PI inhibited based welder rated power limiting system of claim 1, wherein the inverter PI output circuit comprises: the circuit comprises a resistor R39, a resistor R94, a resistor R96, a resistor R113, a resistor R146, a resistor R151, a resistor R152, a diode D47, an operational amplifier U9A, an operational amplifier U9B, a voltage stabilizing diode D50 and a capacitor C28, wherein one end of the resistor R39 is connected to a first input end of a comparison circuit, and the other end of the resistor R39 is respectively connected to one end of the resistor R151, one end of the resistor R146, one end of the resistor R113, the anode of the voltage stabilizing diode D50 and the inverting input end of the operational amplifier U9A; the other end of the resistor R151 is connected to the cathode of a diode D47, and the anode of the diode D47 is connected to the output end of the comparison circuit; the other end of the resistor R146 is respectively connected to one end of a resistor R94 and the output end of an operational amplifier U9B, the other end of the resistor R94 is respectively connected to the inverting input end of the operational amplifier U9B and one end of a resistor R96, the other end of the resistor R96 is connected to a current loop circuit, and the non-inverting input end of the operational amplifier U9B is grounded; the negative electrode of the voltage stabilizing diode D50 is connected to one end of a resistor R152, the other end of the resistor R113 is connected to one end of the resistor R152 through a capacitor C28, the output end of the operational amplifier U9A is connected to one end of the resistor R152, the non-inverting input end of the operational amplifier U9A is grounded, and the positive power supply end and the negative power supply end of the operational amplifier U9A are respectively connected to the positive voltage end and the negative voltage end; the other end of the resistor R152 outputs a limited current Ie.
5. The dual PI inhibited based welder rated power limiting system of claim 1, wherein the wire feeder constant voltage circuit comprises: the diode D56, the resistor R30, the resistor R62, the resistor R80, the variable resistor W3, the zener diode Z4 and the operational amplifier U2D, wherein the anode of the diode D56 is connected to the output end of the comparison circuit, and the cathode of the diode D56 is respectively connected to one end of the resistor R30, one end of the variable resistor W3, the cathode of the zener diode Z4 and the inverting input end of the operational amplifier U2D through a resistor R80; the other end of the variable resistor W3 is connected to the output end of the operational amplifier U2D through a resistor R62, the anode of the zener diode Z4 is connected to the output end of the operational amplifier U2D, the non-inverting input end of the operational amplifier U2D is grounded, the output end of the operational amplifier U2D outputs a given voltage Vs, and the other end of the resistor R30 receives a voltage feedback value Vf.
6. The dual PI inhibited based welder rated power limiting system of claim 1, wherein the wire feed circuit PI regulation circuit comprises: a resistor R10, a resistor R21, a diode V18, a diode V19, a zener diode Z6, a capacitor C20 and an operational amplifier U2B, wherein the cathode of the diode V18 receives a given voltage Vs and is respectively connected to the anode of the diode V19, one end of a resistor R21, one end of the capacitor C20, the cathode of the zener diode Z6 and the inverting input end of the operational amplifier U2B, the anode of the zener diode Z6 is connected to the other end of the capacitor C20 through the resistor R10, the anode of the zener diode Z6 is connected to the output end of the operational amplifier U2B, and the non-inverting input end of the operational amplifier U2B, the anode of the diode V18 and the cathode of the diode V19 are all grounded; the other end of the resistor R21 is connected with a wire feeding given voltage Vg, and the output end of the operational amplifier U2B outputs a limited voltage Ve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610056475.1A CN105562888B (en) | 2016-01-27 | 2016-01-27 | System is limited based on the welding machine rated power for suppressing double PI |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610056475.1A CN105562888B (en) | 2016-01-27 | 2016-01-27 | System is limited based on the welding machine rated power for suppressing double PI |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105562888A CN105562888A (en) | 2016-05-11 |
| CN105562888B true CN105562888B (en) | 2017-07-11 |
Family
ID=55873814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610056475.1A Active CN105562888B (en) | 2016-01-27 | 2016-01-27 | System is limited based on the welding machine rated power for suppressing double PI |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105562888B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108296604B (en) * | 2018-03-12 | 2023-12-12 | 上海威特力焊接设备制造股份有限公司 | Constant power control device for welding machine |
| CN110977103B (en) * | 2019-12-27 | 2021-10-29 | 逢来焊接技术(上海)有限公司 | Novel digital pulse gas shielded welding control circuit |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200951483Y (en) * | 2006-07-18 | 2007-09-26 | 成都汇力达焊接技术有限公司 | Self-adaption, impulse, contravariant carbon dioxide fusion arc welding machine |
| CN201164923Y (en) * | 2008-01-18 | 2008-12-17 | 唐山松下产业机器有限公司 | Automatic control circuit for maximum output current of welding machine |
| CN102794546A (en) * | 2012-07-12 | 2012-11-28 | 青州泰联电气有限公司 | Control circuit for gas-shielded welding machine |
| CN203541811U (en) * | 2013-09-23 | 2014-04-16 | 无锡精工焊接设备有限公司 | Inverter CO2 (carbon dioxide) gas shielded welding machine |
| CN103831513A (en) * | 2014-03-12 | 2014-06-04 | 武汉科技大学 | Energy-conservation control method and energy-conservation control device of electric arc welder |
| CN203973026U (en) * | 2014-05-27 | 2014-12-03 | 广州友田机电设备有限公司 | Automatically the control device of protection weldering wire-feed motor |
| CN204122902U (en) * | 2014-09-29 | 2015-01-28 | 上海沪工焊接集团股份有限公司 | Solder wire convey circuit |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8426772B2 (en) * | 2009-09-02 | 2013-04-23 | Lincoln Global, Inc. | Auxiliary power supply for a welding machine |
-
2016
- 2016-01-27 CN CN201610056475.1A patent/CN105562888B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN200951483Y (en) * | 2006-07-18 | 2007-09-26 | 成都汇力达焊接技术有限公司 | Self-adaption, impulse, contravariant carbon dioxide fusion arc welding machine |
| CN201164923Y (en) * | 2008-01-18 | 2008-12-17 | 唐山松下产业机器有限公司 | Automatic control circuit for maximum output current of welding machine |
| CN102794546A (en) * | 2012-07-12 | 2012-11-28 | 青州泰联电气有限公司 | Control circuit for gas-shielded welding machine |
| CN203541811U (en) * | 2013-09-23 | 2014-04-16 | 无锡精工焊接设备有限公司 | Inverter CO2 (carbon dioxide) gas shielded welding machine |
| CN103831513A (en) * | 2014-03-12 | 2014-06-04 | 武汉科技大学 | Energy-conservation control method and energy-conservation control device of electric arc welder |
| CN203973026U (en) * | 2014-05-27 | 2014-12-03 | 广州友田机电设备有限公司 | Automatically the control device of protection weldering wire-feed motor |
| CN204122902U (en) * | 2014-09-29 | 2015-01-28 | 上海沪工焊接集团股份有限公司 | Solder wire convey circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105562888A (en) | 2016-05-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6352993B2 (en) | ||
| CN105562888B (en) | System is limited based on the welding machine rated power for suppressing double PI | |
| US11969834B2 (en) | Real time resistance monitoring of an arc welding circuit | |
| US11185940B2 (en) | Systems and methods for controlling an output power of a welding power supply | |
| EP3778090A1 (en) | Gas shielded arc welding control method and control device | |
| US20220063009A1 (en) | Arc welding control method and arc welding device | |
| US3509314A (en) | Wire feed control for an automatic welding system | |
| CN108886267B (en) | Circuit control method and device in remote power supply system, remote power supply and system | |
| US6225597B1 (en) | Method of controlling pulse output and consumable electrode type pulse arc welding device | |
| JP2024099058A (en) | Arc welding method and arc welding device | |
| CN204160022U (en) | A kind of consumable electrode arc welding control device | |
| CN104209631A (en) | Electrical arc welding control device of consumable electrode | |
| US10086463B2 (en) | Arc welding apparatus | |
| JP4547850B2 (en) | How to detect short circuit in arc welding | |
| CN108112239B (en) | System and method for welding with input current limiting | |
| JP7108368B2 (en) | Constriction detection control method for welding power source | |
| CN115052704A (en) | Additional circuit for a process supply line of a welding or cutting torch and hose assembly having an additional circuit | |
| CN1009175B (en) | Melting electrodes type of arc welding machine with pulsed current | |
| JP2005288540A (en) | Welding power source with function of quickly reducing current when detecting constriction and welding equipment | |
| EP0128985A1 (en) | Electric arc welder that provides non-sticking arc initiation and thereafter maintains the arc | |
| JP2024147853A (en) | Welding method using multiple welding power sources | |
| JP7198558B2 (en) | Pulse arc welding control method | |
| EP4088850B1 (en) | Arc welding control method and arc welding device | |
| JPH0570549B2 (en) | ||
| JP2534373B2 (en) | Arc welding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |