CN201699602U - High power single circuit inverse soft switch arc welding power source - Google Patents
High power single circuit inverse soft switch arc welding power source Download PDFInfo
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- CN201699602U CN201699602U CN2010202239404U CN201020223940U CN201699602U CN 201699602 U CN201699602 U CN 201699602U CN 2010202239404 U CN2010202239404 U CN 2010202239404U CN 201020223940 U CN201020223940 U CN 201020223940U CN 201699602 U CN201699602 U CN 201699602U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
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Abstract
The utility model discloses a high power single circuit inverse soft switch arc welding power source, which comprises a single main loop circuit, a control circuit and a drive circuit, wherein the single main loop circuit comprises a three-phase EMI filter circuit, a three-phase rectifier filter circuit, a full bridge inverse soft switch circuit, an intermediate frequency transformer and an intermediate frequency full wave rectifier filter circuit; the input terminal of the three-phase filter circuit is connected with a three phase power supply, is connected with the full bridge inverse soft switch circuit through the three-phase rectifier filter circuit, is connected on the primary side of the intermediate frequency transformer after being connected in series with a saturable inductor and an interceptive blocking capacitor, and enters the intermediate frequency full wave rectifier filter circuit after being output from the transforming secondary side of the intermediate frequency transformer; and the control circuit is connected in parallel with the primary side of the intermediate frequency transformer and the output terminal of the intermediate frequency full wave rectifier filter circuit, and is connected with the full bridge inverse soft switch circuit through the drive circuit.
Description
Technical field
The utility model relates to a kind of contravariant arc welding power source, specifically a kind of high-power single loop soft switch inverter arc-welding power supply.
Background technology
Development along with production technology, the production application of various large-scale steel structure members and main equipment, in order to enhance productivity and welding quality, just need the power supply of bigger electric current and power that welding field is provided, contravariant arc welding power source is because characteristics such as little, in light weight, energy-efficient, the easy to use and excellents of its volume, more and more be subject to people's attention, but at present the rated current of the Arc Welding Power of the single inversion circuit unit that produces of finding is at 630A, and normally being formed in parallel with two or more inversion units as the bigger electric current of need addresses this problem.As rated current 1250A, the inversion unit parallel connection that is to use two 630A of producing at present usually.China Patent No. 01224385.X discloses a kind of " high power contravariant welding machine ", and its scheme adopts is inversion unit and is unified into high-power Arc Welding Power.Its shortcoming is main loop circuit redundancy, line complexity, needs current-sharing, safeguards problems such as complexity, phase reciprocity interference, Characteristics Control more complicated.
The utility model content
The objective of the invention is to overcome the above-mentioned deficiency of prior art, it is little to have solved existing single loop contravariant arc welding power source power output, as to export high-power can only several the problems of the bigger electric currents of small-power power output in parallel, provide a kind of and only realize that with single soft-switching inversion element circuit rated current can reach the high-power Arc Welding Power of 1250A, have control convenience, no parallel current-sharing problem, simple in structure, easy to operate etc., can realize multiple external characteristic such as constant current constant voltage etc.; The deficiency that it need not flow equalizing circuit, overcomes the phase mutual interference, can conveniently realize many characteristics outputs and need not to consider many shunt choppers company accent, and adopt phase-shifting full-bridge IGBT inversion soft switch technique, efficient and reliability are improved greatly.
In order to reach above-mentioned purpose of design, the technical solution adopted in the utility model is as follows:
A kind of high-power single loop inversion flexible switch arc-welding power supply, comprise single main loop circuit, control circuit, drive circuit, described single main loop circuit is by three-phase EMI filter circuit, the three phase rectifier filter circuit, the full-bridge inverting soft switch circuit, intermediate frequency transformer, the intermediate frequency full-wave rectifier filter circuit is formed, described three-phase EMI filter circuit input links to each other with three phase mains, be connected with the full-bridge inverting soft switch circuit through the three phase rectifier filter circuit, again with pulsactor, the former limit of intermediate frequency transformer is inserted in blocking-up capacitance serial connection back, enters the intermediate frequency full-wave rectifier filter circuit again after the output of intermediate frequency transformer transformation secondary; Described control circuit is parallel to former limit of intermediate frequency transformer and intermediate frequency full-wave rectifier filter circuit output, and described control circuit is linked to the full-bridge inverting soft switch circuit by drive circuit.
Described full-bridge inverting soft switch circuit is to be made of high-power electric semiconductor device isolation grid bipolar transistor IGBT.
Described three phase rectifier filter circuit mainly is made up of three phase rectifier module V and capacitor C 1, C2.
Described full-bridge inverting soft switch circuit adopts the ZVSZCSPWM phase shifting full bridge soft switch, mainly form by leading-bridge Q1-1, Q1-2 and lagging leg Q2-1, Q2-2, leading-bridge Q1-1, Q1-2 are operated in no-voltage (ZVS), and lagging leg Q2-1, Q2-2 are operated in zero current.
Described intermediate frequency full-wave rectifier filter circuit mainly is made up of two diode D, inductance L 2, L3, L4 and capacitor C 6, C7, C8, two diode D are connected to intermediate frequency transformer by inductance L 3 and L4 respectively, two diode D go up shunt capacitance C6 and C7 respectively, export by inductance L 2 and capacitor C 8 after diode D rectification.
The beneficial effect of high-power single loop inversion flexible switch arc-welding power supply described in the utility model is: the Arc Welding Power of only realizing high-power output with single loop, it is rational in infrastructure, control convenience, no parallel current-sharing problem, simple in structure, easy to operate, overcome phase mutual interference, excellent etc., can realize that the required external characteristic of multiple welding exports.
Description of drawings
Fig. 1 is the frame principle figure of the described high-power single loop inversion flexible switch arc-welding power supply of the utility model embodiment;
Fig. 2 is the main circuit diagram of the described high-power single loop inversion flexible switch arc-welding power supply of the utility model embodiment;
Fig. 3 is the IGBT drive waveforms figure of the described high-power single loop inversion flexible switch arc-welding power supply of the utility model embodiment.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described in further detail: present embodiment is implemented for prerequisite in the present invention program, but protection scope of the present invention is not limited to following embodiment.
As shown in Figure 1, the described high-power single loop inversion flexible switch arc-welding power supply of the utility model embodiment, comprise single main loop circuit, control circuit, drive circuit, described single main loop circuit is by three-phase EMI filter circuit 1, three phase rectifier filter circuit 2, full-bridge inverting soft switch circuit 3, intermediate frequency transformer 4, intermediate frequency full-wave rectifier filter circuit 5 is formed, described three-phase EMI filter circuit 1 input links to each other with three phase mains, be connected with full-bridge inverting soft switch circuit 3 through three phase rectifier filter circuit 2, again with pulsactor, intermediate frequency transformer 4 former limits are inserted in blocking-up capacitance serial connection back, after the output of intermediate frequency transformer 4 transformation secondary, enter intermediate frequency full-wave rectifier filter circuit 5 again, behind intermediate frequency full-wave rectifier filter circuit 5, obtain required output voltage or electric current; Described control circuit is parallel to intermediate frequency transformer 4 former limits and intermediate frequency full-wave rectifier filter circuit 5 outputs, the current feedback signal on intermediate frequency transformer 4 former limits is delivered to and is connected to control circuit, and control circuit receives the current feedback signal and the voltage feedback signal of intermediate frequency full-wave rectifier filter circuit 5 outputs simultaneously; Described control circuit is linked to full-bridge inverting soft switch circuit 3 by drive circuit.
Described full-bridge inverting soft switch circuit 3 is to be made of high-power electric semiconductor device isolation grid bipolar transistor IGBT.
Its operation principle is: after the feedback that control circuit will be taken from the output voltage that will control in the single main loop circuit or electric current is compared with the object that will control is given, through the PID automatic control and adjustment, produce control signal and output to the soft on ﹠ off operation mode of drive circuit control IGBT phase-shifting full-bridge inversion, make output reach needed voltage or electric current, satisfy welding process requirement.Protection and deixises such as described control circuit is overheated in addition, overcurrent, under-voltage, overvoltage, phase shortage, and function selecting (referring to realize multiple welding function), current/voltage is default and demonstration etc.; Described drive circuit will produce the signal of importing control IGBT by control circuit and be added on amplification, so that be fit to drive the driving power of high power semi-conductor insulated gate bipolar transistor IGBT inversion work.
As shown in Figure 2, the primary structure of described single main loop circuit is: three-phase 380VAC/50Hz inserts three-phase EMI filter circuit 1 through terminal box, circuit breaker K1, the electromagnetic interference that three-phase EMI filter circuit 1 is introduced external power grid reduces or filtering, reduce this Arc Welding Power of electromagnetic interference of external power grid, the electromagnetic signal that this machine is produced reduces or filtering simultaneously, reduces or eliminates the interference to external power grid; 1 output of three-phase EMI filter circuit inserts three phase rectifier filter circuit 2, this circuit mainly is made up of three phase rectifier module V and capacitor C 1, C2, electric current behind the rectifying and wave-filtering is input to full-bridge inverting soft switch circuit 3, this circuit adopts ZVSZCS PWM phase shifting full bridge soft switch, mainly form by leading-bridge Q1-1, Q1-2 and lagging leg Q2-1, Q2-2, leading-bridge Q1-1, Q1-2 are operated in no-voltage (ZVS), and lagging leg Q2-1, Q2-2 are operated in zero current; Full-bridge inverting soft switch circuit 3 is linked into intermediate frequency full-wave rectifier filter circuit 5 by intermediate frequency transformer 4, described intermediate frequency full-wave rectifier filter circuit 5 mainly is made up of two diode D, inductance L 2, L3, L4 and capacitor C 6, C7, C8, two diode D are connected to intermediate frequency transformer by inductance L 3 and L4 respectively, two diode D go up shunt capacitance C6 and C7 respectively, export by inductance L 2 and capacitor C 8 after diode D rectification.
Shown in Fig. 2 and 3, two of each brachium pontis IGBT become 180 ° of complementary conductings during work, leading-bridge Q1-1, Q1-2 and lagging leg Q2-1, the Q2-2 angle of flow differ a phase place a, be phase shifting angle a, the size of regulating output voltage or electric current by the size of regulating phase shifting angle a, the capacitor C 3 of leading-bridge Q1-1 and Q1-2 parallel connection, C4 are the voltage rates of rise when reducing the leading-bridge shutoff, reduce turn-off power loss; Blocking capacitor C5 forces intermediate frequency transformer 4 primary currents to drop to zero when leading-bridge Q1-1, Q1-2 turn-off, and creates the condition of lagging leg Q2-1, Q2-2 zero-current switching, also can avoid intermediate frequency transformer 4 D.C. magnetic biasings and saturated phenomenon; When intermediate frequency transformer 4 primary currents drop to zero, the pulsactor L1 that is series at intermediate frequency transformer 4 former limits is (when electric current is big, L1 is saturated, electric current is little, withdraw near zero the time saturated) stop electric current to increase in the other direction, in a bit of time with current clamp in null value, realize Q2-1, the Q2-2 zero-current switching, lagging leg is opened Q2-1 simultaneously, during Q2-2, electric current is from liter above freezing, the pulsactor L1 restriction electric current rate of rise, make the lagging leg zero current turning-on, outwards export energy, after each parameter of this circuit is fixing with resonance work according to certain rules, circuit is with soft on-off mode inversion, reliability height, the efficient height; After 5 filtering of intermediate frequency full-wave rectifier filter circuit, export required voltage or electric current then.
The above only is an example of the present utility model; example does not limit the utility model simultaneously; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. high-power single loop inversion flexible switch arc-welding power supply, comprise single main loop circuit, control circuit, drive circuit, it is characterized in that: described single main loop circuit is by three-phase EMI filter circuit, the three phase rectifier filter circuit, the full-bridge inverting soft switch circuit, intermediate frequency transformer, the intermediate frequency full-wave rectifier filter circuit is formed, described three-phase EMI filter circuit input links to each other with three phase mains, be connected with the full-bridge inverting soft switch circuit through the three phase rectifier filter circuit, again with pulsactor, the former limit of intermediate frequency transformer is inserted in blocking-up capacitance serial connection back, enters the intermediate frequency full-wave rectifier filter circuit again after the output of intermediate frequency transformer transformation secondary; Described control circuit is parallel to former limit of intermediate frequency transformer and intermediate frequency full-wave rectifier filter circuit output, and described control circuit is linked to the full-bridge inverting soft switch circuit by drive circuit.
2. high-power single loop inversion flexible switch arc-welding power supply according to claim 1 is characterized in that: described full-bridge inverting soft switch circuit is to be made of high-power electric semiconductor device isolation grid bipolar transistor IGBT.
3. high-power single loop inversion flexible switch arc-welding power supply according to claim 1 is characterized in that: the three phase rectifier filter circuit mainly is made up of three phase rectifier module V and capacitor C 1, C2.
4. according to claim 1 or 3 described high-power single loop inversion flexible switch arc-welding power supplies, it is characterized in that: the full-bridge inverting soft switch circuit adopts the ZVSZCSPWM phase shifting full bridge soft switch, mainly form by leading-bridge Q1-1, Q1-2 and lagging leg Q2-1, Q2-2, leading-bridge Q1-1, Q1-2 are operated in no-voltage (ZVS), and lagging leg Q2-1, Q2-2 are operated in zero current.
5. high-power single loop inversion flexible switch arc-welding power supply according to claim 1, it is characterized in that: the intermediate frequency full-wave rectifier filter circuit mainly is made up of two diode D, inductance L 2, L3, L4 and capacitor C 6, C7, C8, two diode D are connected to intermediate frequency transformer by inductance L 3 and L4 respectively, two diode D go up shunt capacitance C6 and C7 respectively, export by inductance L 2 and capacitor C 8 after diode D rectification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202239404U CN201699602U (en) | 2010-06-12 | 2010-06-12 | High power single circuit inverse soft switch arc welding power source |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010202239404U CN201699602U (en) | 2010-06-12 | 2010-06-12 | High power single circuit inverse soft switch arc welding power source |
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| CN201699602U true CN201699602U (en) | 2011-01-05 |
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| CN2010202239404U Expired - Fee Related CN201699602U (en) | 2010-06-12 | 2010-06-12 | High power single circuit inverse soft switch arc welding power source |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102201740A (en) * | 2011-06-10 | 2011-09-28 | 李峰华 | High frequency resonant soft-switching circuit for electric welding machine |
| CN102218584A (en) * | 2011-06-10 | 2011-10-19 | 李峰华 | Portable central processing unit (CPU) controlled high-power electric welding machine |
| CN102281010A (en) * | 2010-06-12 | 2011-12-14 | 成都熊谷加世电器有限公司 | High-power single-loop contravariance soft switching arc welding power supply |
| 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 |
| CN103973123A (en) * | 2014-04-30 | 2014-08-06 | 华中科技大学 | Arc welding power system, control method and power module |
| CN104092379A (en) * | 2014-06-17 | 2014-10-08 | 华中科技大学 | Welding and cutting network system based on direct-current bus structure |
| CN110690829A (en) * | 2019-04-30 | 2020-01-14 | 周衍 | Inversion driving system with ultralow switching power consumption and ultralow output end electromagnetic interference |
-
2010
- 2010-06-12 CN CN2010202239404U patent/CN201699602U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102281010A (en) * | 2010-06-12 | 2011-12-14 | 成都熊谷加世电器有限公司 | High-power single-loop contravariance soft switching arc welding power supply |
| CN102201740A (en) * | 2011-06-10 | 2011-09-28 | 李峰华 | High frequency resonant soft-switching circuit for electric welding machine |
| CN102218584A (en) * | 2011-06-10 | 2011-10-19 | 李峰华 | Portable central processing unit (CPU) controlled high-power electric welding machine |
| 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 |
| CN103973123A (en) * | 2014-04-30 | 2014-08-06 | 华中科技大学 | Arc welding power system, control method and power module |
| CN103973123B (en) * | 2014-04-30 | 2016-06-22 | 华中科技大学 | A kind of Arc Welding Source System, control method and power module |
| CN104092379A (en) * | 2014-06-17 | 2014-10-08 | 华中科技大学 | Welding and cutting network system based on direct-current bus structure |
| CN110690829A (en) * | 2019-04-30 | 2020-01-14 | 周衍 | Inversion driving system with ultralow switching power consumption and ultralow output end electromagnetic interference |
| CN110690829B (en) * | 2019-04-30 | 2020-10-30 | 周衍 | Inversion driving system with ultralow switching power consumption and ultralow output end electromagnetic interference |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20170612 |
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| CF01 | Termination of patent right due to non-payment of annual fee |