CN203617921U - Wide-voltage adaptive inversion-type arc welding power supply - Google Patents
Wide-voltage adaptive inversion-type arc welding power supply Download PDFInfo
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- CN203617921U CN203617921U CN201320659893.1U CN201320659893U CN203617921U CN 203617921 U CN203617921 U CN 203617921U CN 201320659893 U CN201320659893 U CN 201320659893U CN 203617921 U CN203617921 U CN 203617921U
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Abstract
The utility model discloses a wide-voltage adaptive inversion-type arc welding power supply which comprises a three-phase rectification module, a filtering capacitor module, a power up module, a constant voltage control module and a welding power supply module. The three-phase rectification module is a three-phase bridge-type half-control rectification module. The three-phase bridge-type half-control rectification module, the filtering capacitor module, the power up module and the welding power supply module are connected in sequence. An input end of the constant voltage control module is connected with an output end of the filtering capacitor module. One output end of the constant voltage control module is connected with one input end of the three-phase bridge-type half-control rectification module, and another output end of the constant voltage control module is connected with the power up module. The constant voltage control module is used for adjusting output signals of the constant voltage control module three-phase bridge-type half-control rectification module and the switching on and switching off of the power up module according to voltage signals output by the filtering capacitor module. An output end of the welding power supply is connected with a workpiece. The wide-voltage adaptive inversion-type arc welding power supply can adapt to input voltage of from 220V to 440 V, and can still operate safely when input voltage is unstable.
Description
Technical field
The utility model relates to welding equipment research field, particularly a kind of wide voltage adaptive inverter arc welding power source.
Background technology
The circuit theory of inverter arc welding power source as shown in Figure 1 at present, comprise three phase rectifier module, filter capacitor module and source of welding current module, wherein the input of source of welding current module is connected with the output of filter capacitor module, and the output of source of welding current module is connected with workpiece.Its input voltage range generally between 220 ± 10%, 380 ± 15%, 440 ± 15%, seldom has the input voltage that Arc Welding Power can self adaptation 220V to 440V.Existing contravariant power, in the time of the unsettled local work of supply voltage, easily damages power circuit, causes failure rate high.In prior art, have part producer to adopt the mode of voltage multiplying rectifier, still because judging circuit is unstable, this mode easily causes power panel to burn out.
Therefore the Arc Welding Power that, proposes a kind of input voltage that can self adaptation 220V to 440V has very big practical value.
Utility model content
Main purpose of the present utility model is to overcome the shortcoming of prior art with not enough, and a kind of wide voltage adaptive inverter arc welding power source is provided, the input voltage that this power supply can self adaptation 220V to 440V, and still can safe operation in the time that input voltage is unstable.
The purpose of this utility model realizes by following technical scheme: a kind of wide voltage adaptive inverter arc welding power source, comprise three phase rectifier module, filter capacitor module and source of welding current module, described three phase rectifier module is three-phase semi-controlled bridge type rectification module, described Arc Welding Power also comprises power on module and constant voltage control module, wherein three-phase semi-controlled bridge type rectification module, filter capacitor module, the module that powers on is connected successively with source of welding current module, the input of constant voltage control module is connected with the output of filter capacitor module, an output of constant voltage control module is connected with an input of three-phase semi-controlled bridge type rectification module, another output of constant voltage control module is connected with the module that powers on, constant voltage control module is for regulating the power on switching of module of the output signal of three-phase semi-controlled bridge type rectification module and control according to the voltage signal of filter capacitor module output, the output of the source of welding current is connected with workpiece.
Preferably, described three-phase semi-controlled bridge type rectification module is controllable silicon three-phase semi-controlled bridge type rectification module.
Preferably, the module that powers on described in is A.C. contactor.
Preferably, between described three-phase semi-controlled bridge type rectification module and filter capacitor module, a filter reactor is also set, the harmonic current producing for absorbing three-phase semi-controlled bridge type rectification module.After filter reactor and filter capacitor module are in series, not only can effectively absorb mains by harmonics, and can improve the power factor of system, the further safe operation of safeguards system.
Operation principle of the present utility model is: three phase rectifier module is electrically connected with outside three-phase alternating current, three phase rectifier module will be exported direct current after AC rectification, then through filter reactor, filter capacitor module carries out being delivered to the module that powers on after filtering, the output signal of filter capacitor module enters constant voltage control module simultaneously, constant voltage control module judges that according to this signal whether current demand signal is consistent with default signal value, if consistent, send control signals to the module that powers on, the module that powers on is connected, and then this direct current passes into the source of welding current, if inconsistent, constant voltage control module sends control signals to power on module and three phase rectifier module, the module that powers on is closed, three phase rectifier module is adjusted, until the output signal of filter capacitor module is consistent with preset signals, just again connect the module that powers on.
Compared with prior art, tool has the following advantages and beneficial effect the utility model:
1, the utility model is by three-phase semi-controlled bridge type rectification module and constant voltage control module, input voltage that can self adaptation 220V to 440V.
2, in the utility model by filter reactor and filter capacitor module are set, not only can effectively absorb mains by harmonics, and can improve the power factor of system, the further safe operation of safeguards system.
3, in the utility model, control the switching of the module that powers on by constant voltage control module, can still can safe operation in the time that supply voltage is unstable.
Accompanying drawing explanation
Fig. 1 is the theory diagram of traditional inverter arc welding power source;
Fig. 2 is theory diagram of the present utility model;
Fig. 3 is circuit theory schematic diagram of the present utility model.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but execution mode of the present utility model is not limited to this.
As shown in Figure 2, the wide voltage adaptive inverter arc welding power source of the present embodiment, comprise three phase rectifier module, filter capacitor module and source of welding current module, compared with prior art (as shown in Figure 1), in the present embodiment, also comprise power on module and constant voltage control module, wherein three phase rectifier module is controllable silicon three-phase semi-controlled bridge type rectification module, structure annexation as shown in Figure 2, described three-phase semi-controlled bridge type rectification module, filter capacitor module, the module that powers on is connected successively with source of welding current module, constant voltage control module respectively with three-phase semi-controlled bridge type rectification module, filter capacitor module, the module that powers on is connected, the output signal of filter capacitor module enters constant voltage control module, constant voltage control module judges that according to this signal whether current demand signal is consistent with default signal value, if consistent, send control signals to the module that powers on, the module that powers on is connected, and then this direct current passes into the source of welding current, if inconsistent, constant voltage control module sends control signals to power on module and three phase rectifier module, order the module that powers on to be closed, three phase rectifier module is adjusted, until the output signal of filter capacitor module is consistent with preset signals, just again connect the module that powers on.
In actual applications, for further improving the fail safe of power supply, can between described three-phase semi-controlled bridge type rectification module and filter capacitor module, a filter reactor be set, the harmonic current producing for absorbing three-phase semi-controlled bridge type rectification module.
Physical circuit principle as shown in Figure 3, wherein label 1 represents outside three-phase alternating current electrical network, three-phase semi-controlled bridge type rectification module 2, filter reactor 3, filter capacitor module 4, the module that powers on 5 and source of welding current 6(are corresponding to the source of welding current module described in Fig. 2) be connected successively according to circuit theory, constant-voltage control circuit 7(is corresponding to the constant voltage control module described in Fig. 2) be connected with three-phase semi-controlled bridge type rectification module 2, filter capacitor module 4, the module that powers on 5 respectively.
Concrete, the module that powers in the present embodiment 5 is A.C. contactor.
At input supply voltage, unstable and different regions, different line voltage in the situation that, the utility model all can be exported weldingvoltage stably.
Above-described embodiment is preferably execution mode of the utility model; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be equivalent substitute mode, within being included in protection range of the present utility model.
Claims (4)
1. one kind wide voltage adaptive inverter arc welding power source, comprise three phase rectifier module, filter capacitor module and source of welding current module, it is characterized in that, described three phase rectifier module is three-phase semi-controlled bridge type rectification module, described Arc Welding Power also comprises power on module and constant voltage control module, wherein three-phase semi-controlled bridge type rectification module, filter capacitor module, the module that powers on is connected successively with source of welding current module, the input of constant voltage control module is connected with the output of filter capacitor module, an output of constant voltage control module is connected with an input of three-phase semi-controlled bridge type rectification module, another output of constant voltage control module is connected with the module that powers on, constant voltage control module is for regulating the power on switching of module of the output signal of three-phase semi-controlled bridge type rectification module and control according to the voltage signal of filter capacitor module output, the output of the source of welding current is connected with workpiece.
2. wide voltage adaptive inverter arc welding power source according to claim 1, it is characterized in that, between described three-phase semi-controlled bridge type rectification module and filter capacitor module, a filter reactor is also set, the harmonic current producing for absorbing three-phase semi-controlled bridge type rectification module.
3. wide voltage adaptive inverter arc welding power source according to claim 1 and 2, is characterized in that, described three-phase semi-controlled bridge type rectification module is controllable silicon three-phase semi-controlled bridge type rectification module.
4. wide voltage adaptive inverter arc welding power source according to claim 1 and 2, is characterized in that, described in the module that powers on be A.C. contactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659893.1U CN203617921U (en) | 2013-10-24 | 2013-10-24 | Wide-voltage adaptive inversion-type arc welding power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320659893.1U CN203617921U (en) | 2013-10-24 | 2013-10-24 | Wide-voltage adaptive inversion-type arc welding power supply |
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| Publication Number | Publication Date |
|---|---|
| CN203617921U true CN203617921U (en) | 2014-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320659893.1U Expired - Fee Related CN203617921U (en) | 2013-10-24 | 2013-10-24 | Wide-voltage adaptive inversion-type arc welding power supply |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234529A (en) * | 2015-09-25 | 2016-01-13 | 广州亦高电气设备有限公司 | Wide-voltage self-adaptive high-power inversion electric welding machine |
-
2013
- 2013-10-24 CN CN201320659893.1U patent/CN203617921U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105234529A (en) * | 2015-09-25 | 2016-01-13 | 广州亦高电气设备有限公司 | Wide-voltage self-adaptive high-power inversion electric welding machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20140528 Termination date: 20141024 |
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| EXPY | Termination of patent right or utility model |