CN103182586A - Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine - Google Patents
Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine Download PDFInfo
- Publication number
- CN103182586A CN103182586A CN2013101016873A CN201310101687A CN103182586A CN 103182586 A CN103182586 A CN 103182586A CN 2013101016873 A CN2013101016873 A CN 2013101016873A CN 201310101687 A CN201310101687 A CN 201310101687A CN 103182586 A CN103182586 A CN 103182586A
- Authority
- CN
- China
- Prior art keywords
- circuit
- resistance
- given
- pin
- power supply
- 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.)
- Granted
Links
- 238000003466 welding Methods 0.000 title claims abstract description 71
- 230000001360 synchronised effect Effects 0.000 claims abstract description 47
- 238000005070 sampling Methods 0.000 claims abstract description 26
- 238000004804 winding Methods 0.000 claims description 36
- 239000003990 capacitor Substances 0.000 claims description 21
- 230000005389 magnetism Effects 0.000 claims description 14
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 13
- 229910052710 silicon Inorganic materials 0.000 claims description 13
- 239000010703 silicon Substances 0.000 claims description 13
- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000003321 amplification Effects 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 6
- 210000001320 hippocampus Anatomy 0.000 claims description 2
- 229920000049 Carbon (fiber) Polymers 0.000 abstract description 6
- 239000004917 carbon fiber Substances 0.000 abstract description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 6
- 230000009977 dual effect Effects 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Images
Abstract
The invention relates to a variable control system of output characteristics of a permanent-magnet passive medium-frequency electric welding machine and belongs to the technical field of an electric welding machine. The variable control system comprises a medium-frequency main generator P1, a medium-frequency auxiliary generator P2, a three-phase semi-controlled rectifier circuit S, a pulse generating circuit Z, a dual given comparison circuit G, a current sampling circuit I, a voltage sampling circuit V and a power supply source circuit E, wherein the pulse generating circuit Z comprises three synchronous trigger circuits; the dual given comparison circuit G comprises primary and secondary given circuits G1 and G2, a primary given potentiometer RT1 and a lower characteristic given potentiometer RT2; the current sampling circuit I comprises a through-type current transformer and a rectifier diode; and the voltage sampling circuit V comprises three rectifier diodes. A subordinate given circuit in the dual given circuit works when carbon fiber welding is used; the current is increased; the voltage is reduced; the lower characteristic is output; and welding is ensured. By matching with the permanent-magnet passive medium-frequency electric welding machine, the adaptability of the welding machine to a welding rod can be changed; and the variable control system is simple to control, low in cost and high in reliability.
Description
Technical field
The present invention relates to a kind of control system of permanent magnetism intermediate frequency passive electrical welding machine, particularly can only be used for single intermediate frequency passive electrical welding machine of planting welding rod and change the controlling system of welder that can be used for multiple welding rod into.
Background technology
In existing electric welding machine, permanent magnetism intermediate frequency passive electrical welding machine is the volume minimum, and the lightweight mobile electric welding machine that reliability is the highest is specially adapted to not have the weld job that oil and gas pipes under the electrical network condition is laid, electric power tower sets up etc. in the open air.The maximum deficiency of the type electric welding machine be built-in intermediate frequency generator by permanent magnet excitation, so the output characteristics of generator fixes, thus can only be used for the welding of common welding rod, and for the welding of specific (special) requirements, as the carbon fiber weldering etc., then helpless.Because field construction all joins special electric welding machine can not for every kind of welding rod in addition, the such welding characteristic of permanent magnetism intermediate frequency passive electrical welding machine has been brought a lot of inconvenience to the user.Exploration can realize the electric welding machine control circuit that can both weld common welding rod and carbon fiber welding rod etc. simultaneously, is not only the needs of theoretical research, also is the active demand in market.
Summary of the invention
The technical problem to be solved in the present invention is the variable control system of output characteristics that proposes a kind of permanent magnetism intermediate frequency passive electrical welding machine, is used for permanent magnetism intermediate frequency passive electrical welding machine, changes electric welding machine to the adaptability of various welding rods.
The variable control system of the passive intermediate frequency electric welding machine of permanent magnetism of the present invention output characteristics comprises intermediate frequency main generator P1, auxiliary generator P2, three-phase half control rectification circuit S(three-phase half controlled bridge), pulse generating circuit Z, two given comparison circuit G, current sampling circuit I, voltage sample circuit V and power supply circuit E; Pulse generating circuit Z comprises three synchronous trigger circuit Za, Zb, Zc, two given comparison circuit G comprise main given circuit G1 and main given potentiometer RT1, subordinate given circuit G2 and the given potentiometer RT2 of subiculum characteristic, current sampling circuit I comprises straight-through current transformer and commutation diode D7, D8, D9, and voltage sample circuit V is made of three commutation diode D4, D5, D6; Three-phase main winding L1, the L2 of intermediate frequency generator P1, L3 Y-connection, its intermediate point welding system public terminal GND, three-phase output end a1, b1, c1 connect three commutation diode D4, the D5 of voltage sample circuit V, the anode of D6 respectively, and the while is connected with three ac input ends of three-phase half controlled bridge S respectively behind the primary winding of the straight-through current transformer of current sampling circuit I; The three-phase of intermediate frequency generator P1 is assisted winding L 4, L5, L6 Y-connection, its intermediate point welding system public terminal GND, and three-phase output end a2, b2, c2 connect among the pulse generating circuit Z synchronous signal input end of three synchronous trigger circuit Za, Zb, Zc respectively; Primary winding L7, the L8 of three straight-through current transformers, L9 Y-connection among the current sampling circuit I, its intermediate point welding system public terminal GND, three outputs connect the anode of commutation diode D7, D8, D9 respectively, connect feedback signal input 11 pin of main given circuit G1 after the negative electrode of D7, D8, D9 links to each other; The anode of three commutation diode D4, D5, D6 meets output a1, b1, the c1 of main winding L1, L2, L3 respectively among the voltage sample circuit V, and keying input 21 pin of subordinate given circuit G2 are inserted in the negative electrode back that links to each other; The voltage output end of auxiliary generator P2 connects the input of power supply circuit E, and power supply circuit E provides power supply for system.
The annexation that the three-phase of described intermediate frequency generator P1 is assisted between three synchronous trigger circuits of Za, Zb, Zc of the output of winding L 4, L5, L6 and pulse generating circuit Z is: the output a2 of winding L 4 connects end of the same name 1 pin of synchronous trigger circuit Za and different name end 2 pin of synchronous trigger circuit Zb, the output b2 of winding L 5 connects end of the same name 1 pin of synchronous trigger circuit Zb and different name end 2 pin of synchronous trigger circuit Zc, and the output c2 of winding L 6 connects end of the same name 1 pin of synchronous trigger circuit Zc and different name end 2 pin of synchronous trigger circuit Za.
Among the described pulse generating circuit Z, three synchronous trigger circuit Za, Zb, Zc are common square wave synchronous trigger circuit, are made of optocoupler, and this kind circuits for triggering are existing mature technology.5 pin of three synchronous trigger circuit Za, Zb, Zc all connect three-phase half control rectification circuit S(three-phase half controlled bridge) in the negative electrode END of three silicon controlled main rectifier S1, S2, S3,4 pin connect the trigger electrode of controllable silicon S1, S2, S3 respectively, 3 pin all insert 13 ends of main given circuit G1, and the E2 power end all connects the E2 power end of auxiliary generator P2.Three synchronous trigger circuit Za, Zb, Zc
Among described two given comparison circuit G, main given circuit G1 comprises filter circuit, transistor amplifier, operational amplification circuit and corresponding resistance, electric capacity; The anode of capacitor C 31, the left end of resistance R 30 links to each other and forms 11 pin of main given circuit, the right-hand member of R30, the upper end of R31, the anode of capacitor C 32 links to each other, the negative terminal of capacitor C 31, the lower end of resistance R 31, the negativing ending grounding of capacitor C 32, the left end of resistance R 36 connects the anode of capacitor C 32, the right-hand member of resistance R 36, the left end of resistance R 37, the reverse input end of operational amplifier IC2B links to each other, the right-hand member of resistance R 37, the output of operational amplifier IC2B, the left end of resistance R 38 links to each other, the right-hand member of resistance R 38, resistance R 39 upper ends link to each other and form 13 ends of main given circuit, the lower end of resistance R 39, the lower end ground connection of resistance R 35, the upper end of resistance R 35, the input in the same way of operational amplifier IC2B, the colelctor electrode of triode V3 links to each other, the lower end of resistance R 32, the upper end of resistance R 33, the base stage of triode links to each other and forms 12 pin of main given circuit, the lower end of resistance R 33 forms 10 pin of main given circuit, the upper end of resistance R 32, the main given circuit of the continuous formation in the upper end of resistance R 34+the E1 power end, the lower end of resistance R 34 links to each other with the emitter stage of triode V2; Subordinate given circuit G2 comprises mu balanced circuit, operational amplification circuit, transistor amplifier and corresponding resistance, electric capacity; The anode of capacitor C 21, the left end of resistance R 21 links to each other and forms 21 pin of subordinate given circuit, the right-hand member of resistance R 21, the negative electrode of voltage-stabiliser tube DW, the upper end of resistance R 22, the left end of resistance R 24 links to each other, the negative terminal of capacitor C 21, the anode of voltage-stabiliser tube DW, the lower end ground connection of resistance R 22, the right-hand member of resistance R 24, the left end of resistance R 27, the reverse input end of operational amplifier IC2A links to each other, the reverse input end of while operational amplifier IC2A, the upper end of resistance R 23 is connected to form subordinate given circuit+E1 power end, the output of operational amplifier IC2A, the right-hand member of resistance R 27, the base stage of triode V2 links to each other, the colelctor electrode of triode forms 22 pin of subordinate given circuit, the upper end of the emitter stage connecting resistance R28 of triode V2, the right-hand member of resistance R 25, the upper end of resistance R 26, operational amplifier IC2A links to each other to input, the subordinate of the input in the same way of operational amplifier IC2A formation simultaneously given circuit G2-the E1 power end, the left end of resistance R 25, the lower end of resistance R 23 links to each other and forms 20 pin of subordinate given circuit, the lower end of resistance R 26, the lower end ground connection of resistance R 28.
Among described two given comparison circuit G, drag 20 pin, the lower end of the last termination subordinate given circuit G2 of the given potentiometer RT2 of the characteristic back ground connection that links to each other with sliding end down, 10 pin, the lower end of last termination master's given circuit G1 of the main given potentiometer RT1 ground connection afterwards that links to each other with sliding end; 20 pin of subordinate given circuit G2 connect down and drag ground connection GND behind the given potentiometer RT2 of characteristic, 22 pin connect 12 pin that meet main given circuit G1 after the K switch, + E1 power supply termination power supply circuit E+the E1 end,-E2 power supply termination power supply circuit E-the E1 end, 21 pin connect commutation diode D4, the D5 of voltage sample circuit V, the negative electrode of D6; 12 pin of main given circuit G1 link to each other by K switch with 22 pin of subordinate given circuit G2,11 pin meet GND publicly after connecing the negative electrode of commutation diode D7, D8, D9 of current sampling circuit I, 13 pin connect 3 pin of synchronous trigger circuit Za, Zb, Zc in the pulse generating circuit ,+E1 power supply termination power supply circuit E+the E1 end.
Described auxiliary generator P2 is small-sized alternating current generator, and its voltage output end connects the input of power supply circuit E, is power supply during auxiliary generator work.Power supply circuit E provides two-way not have the power supply output that is electrically connected each other, wherein one the tunnel is ± the E1 power output end, this road power supply is two given comparison circuit G power supplies, its common point welding system public terminal GND, another road is+the E2 power output end, this road power supply is three synchronous trigger circuit Za, Zb among the pulse generating circuit Z, Zc power supply, and its common point meets among the three-phase half control rectification circuit S negative electrode END of three silicon controlled main rectifier S1, S2, S3; Auxiliary generator P2 is power supply during work, and its voltage output end connects the input of power supply circuit E.
Described three-phase half control rectification circuit S(three-phase half controlled bridge) be existing mature technology, its effect is the voltage and current that produces the required size of welding machine.The course of work of this circuit is to control silicon controlled to trigger phase place behind the synchronizing signal process subordinate given circuit G2 of back work winding P1 taking-up and pulse generating circuit Z, thereby exports suitable voltage and current.
Described current sampling circuit is made of straight-through current transformer and commutation diode D7, D8, D9, and its effect is to take out current signal input feedback ratio than given circuit G1 from main winding L1, L2, L3.The GND publicly of the two given comparison circuits of the termination of straight-through current transformer primary winding L7, L8, L9, the anode of another termination commutation diode D7, D8, D9, the anode of D7, D8, D9 connect feedback ratio jointly than 11 pin of given circuit G1.
Described voltage sample circuit is made of commutation diode D4, D5, D6, and its effect is to take out under the voltage signal input from primary winding to drag the characteristic given circuit.The anode of commutation diode D4, D5, D6 meets output a1, b1, the c1 of main winding L1, L2, L3 respectively, and negative electrode connects down 21 pin that drag characteristic given circuit G2 jointly.
Operation principle of the present invention is: when using common welding rod, K switch among two given circuit G disconnects, import 10 pin of main given circuit G1 from the synchronizing signal of back work winding taking-up, current sampling signal is imported 11 pin of main given circuit, two inputs are exported appropriate signal to pulse generating circuit Z through the relatively back of the operational amplifier IC2B of main given circuit G1 from 13 pin of the G1 of main given circuit, thereby export suitable voltage, electric current, make the welding machine operate as normal.When using the carbon fiber weldering, K switch closure in two given circuits, 21 pin of voltage sampling signal input subordinate given circuit G2, the voltage-stabiliser tube DW of subordinate given circuit does not work, the terminal voltage in the same way of the operational amplifier of subordinate given circuit G2 is higher than end of oppisite phase voltage, the triode V2 work of subordinate given circuit G2,12 pin of main given circuit G1 are imported in the output of its colelctor electrode by 22 pin of subordinate given circuit, triode V3 collector current increases among the main given circuit G1, through the effect of main given circuit G1 operational amplifier IC2B, the output appropriate signal is dragged characteristic to pulse generating circuit under producing, make the welding machine operate as normal, guarantee finishing of welding job.
The power output of the present invention three-phase main winding L1, L2, L3 in guaranteeing generator P1 enough under the big situation, is controlled the triggering phase angle of controllable silicon S1, S2, S3 among the three G phase half control bridge S in real time, thus the variable control of realization welding machine output characteristics.For guaranteeing in the starting the arc constantly, still can guarantee controllable silicon S1 when welding rod and workpiece moment short circuit, S2, the triggering phase angle of S3 is constant, adopt the auxilliary winding L 4 of three-phase, L5, the output voltage of L6 is as synchronous triggering signal, like this, even under the situation of welding rod and workpiece dead short, the amplitude of synchronizing signal and phase place still can meet the demands, when welding with common welding rod, functional switch K manually disconnects, main given circuit G1 work among two given comparison circuit G, after the current value of being set by given potentiometer RT1 and the output current value of current sampling circuit I compare and enlarge, the impulse phase of control impuls generation circuit Z, make three controllable silicon S1 among the three-phase half controlled bridge S, S2, S3 finishes the control of welding current with phased approach, when using the welding of carbon fiber welding rod, at first artificial closure function K switch, the following characteristic signals of dragging of subordinate given circuit G2 output is input among the main given circuit G1 through K switch like this, and with the feedback comparison signal of the output signal of main given circuit G1 stack back as welding current, thereby make under the welding current appearance and drag characteristic, welding is finished.
The invention has the beneficial effects as follows: by master and slave two given circuits, according to the welding rod different choice respective combination of required use, when electric welding machine is worked, to different weldments, circuit can be judged by electric current, voltage sampling signal, common weldment can directly weld, and when running into the carbon fiber weldering, voltage descends, electric current increases, under drag characteristic to produce, welding machine can work on, this just makes welding machine can tackle all weldments.Simultaneously, native system also has simple, low, the reliability advantages of higher of cost of control.
Description of drawings
Fig. 1 is Circuits System theory diagram of the present invention;
Fig. 2 is the main given circuit figure of the two given comparison circuits of the present invention;
Fig. 3 is the subordinate given circuit figure of the two given comparison circuits of the present invention.
Among Fig. 1, E is that power supply is given two given comparison circuit power supplies, and P1 is the back work winding, and Z is pulse generating circuit, and G is two given comparison circuits, and V is voltage sample circuit, and I is current sampling circuit, and S is three-phase half control rectification circuit.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the invention will be further described.
With reference to seeing that Fig. 1, the variable control system of the passive intermediate frequency electric welding machine of this permanent magnetism output characteristics comprise 500Hz intermediate frequency main generator P1, auxiliary generator P2, three-phase half controlled bridge S, pulse generating circuit Z, two given comparison circuit G, current sampling circuit I, voltage sample circuit V and power supply circuit E; Pulse generating circuit Z comprises three synchronous trigger circuit Za, Zb, Zc, two given comparison circuit G comprise main given circuit G1 and main given potentiometer RT1, subordinate given circuit G2 and under drag the given potentiometer RT2 of characteristic, current sampling circuit I comprises straight-through current transformer and commutation diode D7, D8, D9, and voltage sample circuit V is made of three commutation diode D4, D5, D6; Three-phase main winding L1, the L2 of intermediate frequency generator P1, L3 Y-connection, its intermediate point welding system public terminal GND, three-phase output end a1, b1, c1 connect three commutation diode D4, the D5 of voltage sample circuit V, the anode of D6 respectively, and the while is connected with three ac input ends of three-phase half controlled bridge S respectively behind the primary winding of the straight-through current transformer of current sampling circuit I; The three-phase of intermediate frequency generator P1 is assisted winding L 4, L5, L6 Y-connection, its intermediate point welding system public terminal GND, and three-phase output end a2, b2, c2 connect among the pulse generating circuit Z synchronous signal input end of three synchronous trigger circuit Za, Zb, Zc respectively; Primary winding L7, the L8 of three straight-through current transformers, L9 Y-connection among the current sampling circuit I, its intermediate point welding system public terminal GND, three outputs connect the anode of commutation diode D7, D8, D9 respectively, connect feedback signal input 11 pin of main given circuit G1 after the negative electrode of D7, D8, D9 links to each other; The anode of three commutation diode D4, D5, D6 meets output a1, b1, the c1 of main winding L1, L2, L3 respectively among the voltage sample circuit V, and keying input 21 pin of subordinate given circuit G2 are inserted in the negative electrode back that links to each other; The voltage output end of auxiliary generator P2 connects the input of power supply circuit E, and power supply circuit E provides power supply for system.
The annexation that the three-phase of intermediate frequency generator P1 is assisted between three synchronous trigger circuits of Za, Zb, Zc of the output of winding L 4, L5, L6 and pulse generating circuit Z is: the output a2 of winding L 4 connects end of the same name 1 pin of synchronous trigger circuit Za and different name end 2 pin of synchronous trigger circuit Zb, the output b2 of winding L 5 connects end of the same name 1 pin of synchronous trigger circuit Zb and different name end 2 pin of synchronous trigger circuit Zc, and the output c2 of winding L 6 connects end of the same name 1 pin of synchronous trigger circuit Zc and different name end 2 pin of synchronous trigger circuit Za.
Among the pulse generating circuit Z, three synchronous trigger circuit Za, Zb, Zc are common square wave synchronous trigger circuit, are made of optocoupler.5 pin of three synchronous trigger circuit Za, Zb, Zc all meet among the three-phase half controlled bridge S negative electrode END of three silicon controlled main rectifier S1, S2, S3,4 pin connect the trigger electrode of controllable silicon S1, S2, S3 respectively, 3 pin all insert 13 ends of main given circuit G1, and the E2 power end all connects the E2 power end of auxiliary generator P2.Three synchronous trigger circuit Za, Zb, Zc
Referring to Fig. 2, the main given circuit G1 of two given comparison circuit G comprises filter circuit, transistor amplifier, operational amplification circuit and corresponding resistance, electric capacity; The anode of capacitor C 31, the left end of resistance R 30 links to each other and forms 11 pin of main given circuit, the right-hand member of R30, the upper end of R31, the anode of capacitor C 32 links to each other, the negative terminal of capacitor C 31, the lower end of resistance R 31, the negativing ending grounding of capacitor C 32, the left end of resistance R 36 connects the anode of capacitor C 32, the right-hand member of resistance R 36, the left end of resistance R 37, the reverse input end of operational amplifier IC2B links to each other, the right-hand member of resistance R 37, the output of operational amplifier IC2B, the left end of resistance R 38 links to each other, the right-hand member of resistance R 38, resistance R 39 upper ends link to each other and form 13 ends of main given circuit, the lower end of resistance R 39, the lower end ground connection of resistance R 35, the upper end of resistance R 35, the input in the same way of operational amplifier IC2B, the colelctor electrode of triode V3 links to each other, the lower end of resistance R 32, the upper end of resistance R 33, the base stage of triode links to each other and forms 12 pin of main given circuit, the lower end of resistance R 33 forms 10 pin of main given circuit, the upper end of resistance R 32, the main given circuit of the continuous formation in the upper end of resistance R 34+the E1 power end, the lower end of resistance R 34 links to each other with the emitter stage of triode V2.
Referring to Fig. 3, subordinate given circuit G2 comprises mu balanced circuit, operational amplification circuit, transistor amplifier and corresponding resistance, electric capacity; The anode of capacitor C 21, the left end of resistance R 21 links to each other and forms 21 pin of subordinate given circuit, the right-hand member of resistance R 21, the negative electrode of voltage-stabiliser tube DW, the upper end of resistance R 22, the left end of resistance R 24 links to each other, the negative terminal of capacitor C 21, the anode of voltage-stabiliser tube DW, the lower end ground connection of resistance R 22, the right-hand member of resistance R 24, the left end of resistance R 27, the reverse input end of operational amplifier IC2A links to each other, the reverse input end of while operational amplifier IC2A, the upper end of resistance R 23 is connected to form subordinate given circuit+E1 power end, the output of operational amplifier IC2A, the right-hand member of resistance R 27, the base stage of triode V2 links to each other, the colelctor electrode of triode forms 22 pin of subordinate given circuit, the upper end of the emitter stage connecting resistance R28 of triode V2, the right-hand member of resistance R 25, the upper end of resistance R 26, operational amplifier IC2A links to each other to input, the subordinate of the input in the same way of operational amplifier IC2A formation simultaneously given circuit G2-the E1 power end, the left end of resistance R 25, the lower end of resistance R 23 links to each other and forms 20 pin of subordinate given circuit, the lower end of resistance R 26, the lower end ground connection of resistance R 28.
Among two given comparison circuit G, drag down 20 pin, the lower end of the last termination subordinate given circuit G2 of the given potentiometer RT2 of the characteristic back ground connection that links to each other with sliding end, 10 pin, the lower end of last termination master's given circuit G1 of the main given potentiometer RT1 ground connection afterwards that links to each other with sliding end; 20 pin of subordinate given circuit G2 connect down the upper end of dragging the given potentiometer RT2 of characteristic, 22 pin connect 12 pin that meet main given circuit G1 after the K switch, + E1 power supply termination power supply circuit E+the E1 end,-E2 power supply termination power supply circuit E-the E1 end, 21 pin connect commutation diode D4, the D5 of voltage sample circuit V, the negative electrode of D6; 12 pin of main given circuit G1 link to each other by K switch with 22 pin of subordinate given circuit G2,11 pin meet GND publicly after connecing the negative electrode of commutation diode D7, D8, D9 of current sampling circuit I, 13 pin connect 3 pin of synchronous trigger circuit Za, Zb, Zc in the pulse generating circuit ,+E1 power supply termination power supply circuit E+the E1 end.
Auxiliary generator P2 adopts the small-sized alternating current generator that supplies charge in batteries on the petrol engine, and its voltage output end connects the input of power supply circuit E, is power supply during this auxiliary generator work.Power supply circuit E provides two-way not have the power supply output that is electrically connected each other, wherein one the tunnel is ± the E1 power output end, this road power supply is two given comparison circuit G power supplies, its common point welding system public terminal GND, another road is+the E2 power output end, this road power supply is three synchronous trigger circuit Za, Zb among the pulse generating circuit Z, Zc power supply, and its common point meets among the three-phase half control rectification circuit S negative electrode END of three silicon controlled main rectifier S1, S2, S3; Auxiliary generator P2 is power supply during work, and its voltage output end connects the input of power supply circuit E.
By reference to the accompanying drawings embodiments of the present invention are illustrated above, but the present invention is not limited to above-mentioned embodiment, in the ken that those skilled in the art possess, can also under the prerequisite that does not break away from aim of the present invention, makes a variety of changes.
Claims (6)
1. the variable control system of the passive intermediate frequency electric welding machine of permanent magnetism output characteristics is characterized in that: comprise intermediate frequency main generator P1, auxiliary generator P2, three-phase half control rectification circuit S, pulse generating circuit Z, two given comparison circuit G, current sampling circuit I, voltage sample circuit V and power supply circuit E; Pulse generating circuit Z comprises three synchronous trigger circuit Za, Zb, Zc, two given comparison circuit G comprise main given circuit G1 and main given potentiometer RT1, subordinate given circuit G2 and the given potentiometer RT2 of subiculum characteristic, current sampling circuit I comprises straight-through current transformer and commutation diode D7, D8, D9, and voltage sample circuit V is made of three commutation diode D4, D5, D6; Three-phase main winding L1, the L2 of intermediate frequency generator P1, L3 Y-connection, its intermediate point welding system public terminal GND, three-phase output end a1, b1, c1 connect three commutation diode D4, the D5 of voltage sample circuit V, the anode of D6 respectively, and the while is connected with three ac input ends of three-phase half controlled bridge S respectively behind the primary winding of the straight-through current transformer of current sampling circuit I; The three-phase of intermediate frequency generator P1 is assisted winding L 4, L5, L6 Y-connection, its intermediate point welding system public terminal GND, and three-phase output end a2, b2, c2 connect among the pulse generating circuit Z synchronous signal input end of three synchronous trigger circuit Za, Zb, Zc respectively; Primary winding L7, the L8 of three straight-through current transformers, L9 Y-connection among the current sampling circuit I, its intermediate point welding system public terminal GND, three outputs connect the anode of commutation diode D7, D8, D9 respectively, connect feedback signal input 11 pin of main given circuit G1 after the negative electrode of D7, D8, D9 links to each other; The anode of three commutation diode D4, D5, D6 meets output a1, b1, the c1 of main winding L1, L2, L3 respectively among the voltage sample circuit V, and keying input 21 pin of subordinate given circuit G2 are inserted in the negative electrode back that links to each other; The voltage output end of auxiliary generator P2 connects the input of power supply circuit E, and power supply circuit E provides power supply for system.
2. the variable control system of the passive intermediate frequency electric welding machine of permanent magnetism according to claim 1 output characteristics, it is characterized in that: the three-phase of described intermediate frequency generator P1 is assisted winding L 4, L5, the Za of the output of L6 and pulse generating circuit Z, Zb, annexation between three synchronous trigger circuits of Zc is: the output a2 of winding L 4 connects end of the same name 1 pin of synchronous trigger circuit Za and different name end 2 pin of synchronous trigger circuit Zb, the output b2 of winding L 5 connects end of the same name 1 pin of synchronous trigger circuit Zb and different name end 2 pin of synchronous trigger circuit Zc, and the output c2 of winding L 6 connects end of the same name 1 pin of synchronous trigger circuit Zc and different name end 2 pin of synchronous trigger circuit Za.
3. the variable control system of the passive intermediate frequency electric welding machine of permanent magnetism according to claim 1 output characteristics, it is characterized in that: among the described pulse generating circuit Z, 5 pin of three synchronous trigger circuit Za, Zb, Zc all meet among the three-phase half control rectification circuit S negative electrode END of three silicon controlled main rectifier S1, S2, S3,4 pin connect the trigger electrode of controllable silicon S1, S2, S3 respectively, 3 pin all insert 13 ends of main given circuit G1, and the E2 power end all connects the E2 power end of auxiliary generator P2.
4. the variable control system of the passive intermediate frequency electric welding machine of permanent magnetism according to claim 1 output characteristics, it is characterized in that: among described two given comparison circuit G, main given circuit G1 comprises filter circuit, transistor amplifier, operational amplification circuit and corresponding resistance, electric capacity; The anode of capacitor C 31, the left end of resistance R 30 links to each other and forms 11 pin of main given circuit, the right-hand member of R30, the upper end of R31, the anode of capacitor C 32 links to each other, the negative terminal of capacitor C 31, the lower end of resistance R 31, the negativing ending grounding of capacitor C 32, the left end of resistance R 36 connects the anode of capacitor C 32, the right-hand member of resistance R 36, the left end of resistance R 37, the reverse input end of operational amplifier IC2B links to each other, the right-hand member of resistance R 37, the output of operational amplifier IC2B, the left end of resistance R 38 links to each other, the right-hand member of resistance R 38, resistance R 39 upper ends link to each other and form 13 ends of main given circuit, the lower end of resistance R 39, the lower end ground connection of resistance R 35, the upper end of resistance R 35, the input in the same way of operational amplifier IC2B, the colelctor electrode of triode V3 links to each other, the lower end of resistance R 32, the upper end of resistance R 33, the base stage of triode links to each other and forms 12 pin of main given circuit, the lower end of resistance R 33 forms 10 pin of main given circuit, the upper end of resistance R 32, the main given circuit of the continuous formation in the upper end of resistance R 34+the E1 power end, the lower end of resistance R 34 links to each other with the emitter stage of triode V2; Subordinate given circuit G2 comprises mu balanced circuit, operational amplification circuit, transistor amplifier and corresponding resistance, electric capacity; The anode of capacitor C 21, the left end of resistance R 21 links to each other and forms 21 pin of subordinate given circuit, the right-hand member of resistance R 21, the negative electrode of voltage-stabiliser tube DW, the upper end of resistance R 22, the left end of resistance R 24 links to each other, the negative terminal of capacitor C 21, the anode of voltage-stabiliser tube DW, the lower end ground connection of resistance R 22, the right-hand member of resistance R 24, the left end of resistance R 27, the reverse input end of operational amplifier IC2A links to each other, the reverse input end of while operational amplifier IC2A, the upper end of resistance R 23 is connected to form subordinate given circuit+E1 power end, the output of operational amplifier IC2A, the right-hand member of resistance R 27, the base stage of triode V2 links to each other, the colelctor electrode of triode forms 22 pin of subordinate given circuit, the upper end of the emitter stage connecting resistance R28 of triode V2, the right-hand member of resistance R 25, the upper end of resistance R 26, operational amplifier IC2A links to each other to input, the subordinate of the input in the same way of operational amplifier IC2A formation simultaneously given circuit G2-the E1 power end, the left end of resistance R 25, the lower end of resistance R 23 links to each other and forms 20 pin of subordinate given circuit, the lower end of resistance R 26, the lower end ground connection of resistance R 28.
5. according to claim 1 or the variable control system of 4 described permanent magnetism passive intermediate frequency electric welding machine output characteristics, it is characterized in that: among described two given comparison circuit G, drag 20 pin, the lower end of the last termination subordinate given circuit G2 of the given potentiometer RT2 of the characteristic back ground connection that links to each other with sliding end down, 10 pin, the lower end of last termination master's given circuit G1 of the main given potentiometer RT1 ground connection afterwards that links to each other with sliding end; 20 pin of subordinate given circuit G2 meet ground connection GND behind the slide rheostat RT2,22 pin connect 12 pin that meet main given circuit G1 after the K switch, + E1 power supply termination power supply circuit E+the E1 end,-E2 power supply termination power supply circuit E-the E1 end, 21 pin connect commutation diode D7, the D8 of current sampling circuit I, the negative electrode of D9; 12 pin of main given circuit G1 link to each other by K switch with 22 pin of subordinate given circuit G2,11 pin meet GND publicly after connecing the negative electrode of commutation diode D7, D8, D9 of current sampling circuit I, 13 pin connect 3 pin of synchronous trigger circuit Za, Zb, Zc in the pulse generating circuit ,+E1 power supply termination power supply circuit E+the E1 end.
6. the variable control system of the passive intermediate frequency electric welding machine of permanent magnetism according to claim 1 output characteristics, it is characterized in that: described auxiliary generator P2 is small-sized alternating current generator, is power supply during auxiliary generator work; Its voltage output end connects the input of power supply circuit E; Power supply circuit E provides two-way not have the power supply output that is electrically connected each other, wherein one the tunnel is ± the E1 power output end, this road power supply is two given comparison circuit G power supplies, its common point welding system public terminal GND, another road is+the E2 power output end, this road power supply is three synchronous trigger circuit Za, Zb among the pulse generating circuit Z, Zc power supply, and its common point meets among the three-phase half control rectification circuit S negative electrode END of three silicon controlled main rectifier S1, S2, S3; Auxiliary generator P2 is power supply during work, and its voltage output end connects the input of power supply circuit E.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101687.3A CN103182586B (en) | 2013-03-27 | 2013-03-27 | Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310101687.3A CN103182586B (en) | 2013-03-27 | 2013-03-27 | Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103182586A true CN103182586A (en) | 2013-07-03 |
| CN103182586B CN103182586B (en) | 2015-03-11 |
Family
ID=48674164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310101687.3A Expired - Fee Related CN103182586B (en) | 2013-03-27 | 2013-03-27 | Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103182586B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831505A (en) * | 2013-11-29 | 2014-06-04 | 昆明理工大学 | Control device and method for controllable rectification of medium-frequency arc welding power supply |
| CN106238867A (en) * | 2016-08-25 | 2016-12-21 | 湘潭大学 | A kind of applying self adaptation flat peak pulse signal narrow gap welding connected control system and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2071105U (en) * | 1990-01-23 | 1991-02-13 | 太原工业大学科技开发公司 | Non-sources arc-leader for electric welding machine |
| US4999563A (en) * | 1989-02-14 | 1991-03-12 | Sawafui Electric Co., Ltd. | Separately power-feeding welding generator |
| GB2256825B (en) * | 1991-04-22 | 1994-10-05 | Welding Inst | Resistance welding monitor with fast acting filter |
| CN2423054Y (en) * | 2000-03-28 | 2001-03-14 | 周建忠 | Pulse brush plating and welding inverter |
| CN101954527A (en) * | 2010-09-06 | 2011-01-26 | 广州市花都区劲力源电器配件厂 | Miniature inverter welder circuit |
| CN102091850A (en) * | 2010-12-31 | 2011-06-15 | 广东易事特电源股份有限公司 | Aluminum alloy digital welding machine with smooth transition double-pulse parameters |
| CN203304746U (en) * | 2013-03-27 | 2013-11-27 | 昆明理工大学 | Permanent magnet passive medium frequency electric welding machine output characteristic variable control system |
-
2013
- 2013-03-27 CN CN201310101687.3A patent/CN103182586B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4999563A (en) * | 1989-02-14 | 1991-03-12 | Sawafui Electric Co., Ltd. | Separately power-feeding welding generator |
| CN2071105U (en) * | 1990-01-23 | 1991-02-13 | 太原工业大学科技开发公司 | Non-sources arc-leader for electric welding machine |
| GB2256825B (en) * | 1991-04-22 | 1994-10-05 | Welding Inst | Resistance welding monitor with fast acting filter |
| CN2423054Y (en) * | 2000-03-28 | 2001-03-14 | 周建忠 | Pulse brush plating and welding inverter |
| CN101954527A (en) * | 2010-09-06 | 2011-01-26 | 广州市花都区劲力源电器配件厂 | Miniature inverter welder circuit |
| CN102091850A (en) * | 2010-12-31 | 2011-06-15 | 广东易事特电源股份有限公司 | Aluminum alloy digital welding machine with smooth transition double-pulse parameters |
| CN203304746U (en) * | 2013-03-27 | 2013-11-27 | 昆明理工大学 | Permanent magnet passive medium frequency electric welding machine output characteristic variable control system |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103831505A (en) * | 2013-11-29 | 2014-06-04 | 昆明理工大学 | Control device and method for controllable rectification of medium-frequency arc welding power supply |
| CN103831505B (en) * | 2013-11-29 | 2015-11-18 | 昆明理工大学 | A kind of control device of intermediate frequency Arc Welding Power controlled rectification and method |
| CN106238867A (en) * | 2016-08-25 | 2016-12-21 | 湘潭大学 | A kind of applying self adaptation flat peak pulse signal narrow gap welding connected control system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103182586B (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103346675B (en) | High-power cascading electromagnetic emitter system with voltage continuously adjustable in wide range | |
| CN107070280A (en) | Combining inverter and inversion system | |
| CN104901404B (en) | A kind of charging circuit and output control method | |
| CN103182586A (en) | Variable control system of output characteristics of permanent-magnet passive medium-frequency electric welding machine | |
| CN106410910B (en) | A kind of three level Bidirectional charging-discharging circuits | |
| CN203304746U (en) | Permanent magnet passive medium frequency electric welding machine output characteristic variable control system | |
| CN102497127B (en) | Energy storage charging power supply device for connecting electric automobile with intelligent power grid | |
| CN102684519A (en) | Circuit and control method thereof | |
| CN205725456U (en) | Integrated multifunction power supply change-over device | |
| CN205753999U (en) | A kind of DC-DC power source converter topology structural circuit | |
| CN206370783U (en) | Combining inverter and inversion system | |
| CN107482930A (en) | A kind of double inductance twin voltage DC output circuits | |
| CN206004637U (en) | IGBT drive circuit, half-bridge electromagnetic heating circuit and induction cooker | |
| CN203056946U (en) | Output safe type XC/DC expansion power switching circuit with high input efficiency | |
| CN203056937U (en) | Power conversion circuit capable of automatically identifying and orientating polarity and enabling safe current limiting output | |
| CN203056949U (en) | Highly-efficient output power supply adapter circuit for LED chip | |
| CN207218628U (en) | A kind of photovoltaic power optimizer | |
| CN104506060B (en) | A kind of also machine inverter | |
| CN203193485U (en) | A non-polar self-adaptive rectifying/guiding circuit containing output protection | |
| CN109951088A (en) | The control method of single stage type AC-DC converter for electric vehicle battery charger | |
| CN203056934U (en) | Low-voltage power supply XC/DC converting circuit with robust performance | |
| CN205407582U (en) | High efficiency of solar energy distribution formula electricity generation code converter that steps up | |
| CN203056942U (en) | Power switching circuit with output protection and superhigh switching efficiency | |
| CN203056941U (en) | Output safe type wideband non-polar power switching circuit | |
| CN205195581U (en) | Circuit of two kinds of voltages is acquireed in rectification |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150311 Termination date: 20210327 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |