CN203448846U - Inverter welding machine - Google Patents
Inverter welding machine Download PDFInfo
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- CN203448846U CN203448846U CN201320077646.0U CN201320077646U CN203448846U CN 203448846 U CN203448846 U CN 203448846U CN 201320077646 U CN201320077646 U CN 201320077646U CN 203448846 U CN203448846 U CN 203448846U
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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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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model relates to an inverter welding machine which comprises a power supply module and a solder wire feeding machine. The power supply module comprises the following components: a first filter circuit, an inverter circuit, a transformer circuit, a first rectifying circuit and a welding machine output circuit; wherein the first filter circuit, the inverter circuit, the transformer circuit, the first rectifying circuit and the welding machine output circuit are successively connected. The power supply module further comprises the following components: a driving module which is connected with the inverter circuit, a control system which is connected with the driving module, a current feedback adjusting circuit which is connected with the transformer circuit, and a voltage feedback adjusting circuit which is connected with the welding machine output circuit. The current feedback adjusting circuit is connected with the driving module and the control system respectively. The voltage feedback adjusting circuit is connected with the current feedback adjusting circuit. The solder wire feeding machine comprises the following components: a voltage setting circuit which is connected with the voltage feedback adjusting circuit, and an active power factor correcting circuit which is connected with the input end of the filter circuit. The inverter welding machine provided by the utility model has the following advantages: wide input network voltage range, high power factor, small input harmonic interference, and small pollution for an electric network.
Description
[technical field]
The utility model relates to a kind of inverter type welder, particularly a kind of and electrical network is adaptable, harmonic pollution is little, power factor (PF) is high inverter type welder.
[background technology]
Power factor (PF) is to weigh the important indicator of electric equipment performance, the electric equipment that power factor (PF) is low, and not only bad for making full use of of electrical network through-put power, and Harmonics of Input is high, produces larger Conduction Interference and radiation interference; And the effect of Active PFC (PFC) circuit is not only the power factor that improves circuit or system, the more important thing is the problem that can solve electromagnetic interference (EMI) and Electromagnetic Compatibility, for comparatively ripe at present single-phase active PFC technology, it is to be more applied in small-power power, as: the small power electric source modules such as LED power supply, electric ballast, frequency converter, and for the such large power supply of the source of welding current, the scheme realizing in prior art is to add Passive Power factor correction circuit in inverter type welder input stage; But in currently available technology, also do not have inverter type welder to use active PFC technology.
Therefore how designing a kind of inverter type welder, to realize the function that its electrical network is adaptable, harmonic pollution is little, power factor (PF) is high, is one of those skilled in the art's direction of making great efforts.
[utility model content]
For overcome that existing inverter type welder exists that electrical network adaptive capacity is poor, harmonic pollution is large, power factor (PF) is low technical problem, the utility model provides a kind of high power factor inverter type welder.
The utility model solves the problems of the technologies described above adopted technical scheme: a kind of inverter type welder is provided, comprise power module and wire-feed motor, described power module comprises the first filter circuit connecting successively, inverter circuit, transforming circuit, the first rectification circuit, welding machine output circuit, and the driver module being connected with described inverter circuit, the control system being connected with described driver module, the current feedback regulating circuit being connected with described transforming circuit, the Voltage Feedback regulating circuit being connected with described welding machine output circuit, described current feedback regulating circuit is connected with driver module and control system respectively, described Voltage Feedback regulating circuit is connected with described current feedback regulating circuit, described wire-feed motor comprises voltage given circuit, described voltage given circuit is connected with described Voltage Feedback regulating circuit, also comprise passive power factor corrective circuit, described passive power factor corrective circuit is connected with the input of described filter circuit.
According to a preferred embodiment of the present utility model: described passive power factor corrective circuit comprises interconnective input rectification circuit, input signal Acquisition Circuit, output signal Acquisition Circuit, the second filter circuit, auxiliary power circuit, power tube IGBT circuit and control circuit.
According to a preferred embodiment of the present utility model: described control circuit is that model is the chip of L4981.
According to a preferred embodiment of the present utility model: described input rectification circuit comprises inductance T1, resistance R 3, resistance R 4 that the input of described inductance T1 is connected in parallel and mutually connects, the described inductance T1 output capacitor C 3 that is connected in parallel, described capacitor C 3 one end are connected with rectifier bridge D2.
According to a preferred embodiment of the present utility model: input signal Acquisition Circuit comprises resistance R 6, resistance R 8, resistance R 13, resistance R 15, resistance R 16, resistance R 19, capacitor C 13, capacitor C 14), inductance L 1, described resistance R 13, resistance R 19 one end, inductance L 1 one end is connected with input rectification circuit output respectively, the other end and resistance R 8, resistance R 15 one end and capacitor C 13 one end connect, described capacitor C 13 other ends are connected with resistance R 8 other ends through resistance R parallel with one another 6 and capacitor C 14, described resistance R 15 is connected in parallel with resistance R 8, described resistance R 8 other ends are connected with L4981 chip 7 pin, described resistance R 19 other ends are connected with L4981 chip 4 pin through resistance R 16.
According to a preferred embodiment of the present utility model: described output signal Acquisition Circuit comprises resistance R 22, resistance R 23, resistance R 25, diode D3, described diode D3 anode is connected with input signal Acquisition Circuit output, resistance R 22, resistance R 23, resistance R 25 ground connection of negative electrode through being mutually connected in series, one end that resistance R 23 is connected with resistance R 25 is also connected with L4981 chip 14 pin.
According to a preferred embodiment of the present utility model: described the second filter circuit comprises capacitor C 19, capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R 31, resistance R 32, resistance R 33, resistance R 34, resistance R 35, resistance R 36, described capacitor C 19, capacitor C 21, capacitor C 23 one end and resistance R 33, resistance R 36 one end are connected with output signal Acquisition Circuit, described capacitor C 19, capacitor C 21, capacitor C 23 other ends respectively with capacitor C 20, capacitor C 22, capacitor C 24 connects, described resistance R 33, resistance R 36 is respectively through resistance R 31, resistance R 34 and resistance R 32, resistance R 35 connects.
According to a preferred embodiment of the present utility model: described auxiliary power circuit comprises LM7815 chip, capacitor C 1, capacitor C 7, capacitor C 11, capacitor C 12, described capacitor C 1 is connected to input and the earth terminal of LM7815 chip, described capacitor C 7, capacitor C 11, capacitor C 12 are connected in parallel respectively, and being connected in output and the earth terminal of LM7815 chip, the output of described LM7815 chip is also connected with L4981 chip 19 pin.
According to a preferred embodiment of the present utility model: described power tube IGBT circuit comprises resistance R 45, resistance R 46, resistance R 47, resistance R 48, resistance R 49, diode D4, diode D5, diode D6, power tube Q1, power tube Q2 and capacitor C 30, described resistance R 45, resistance R 46, resistance R 47, resistance R 49 one end, diode D4, diode D5 negative electrode is connected with L4981 chip 20 pin respectively, described resistance R 45, resistance R 49 other end ground connection, described resistance R 46 other ends, diode D4 anode is connected with power tube Q1 base stage, described resistance R 47 other ends, diode D5 anode is connected with power tube Q2 base stage, described power tube Q1, power tube Q2 source ground, described capacitor C 30 one end and power tube Q1, the power tube Q2 connection that drains, and be connected with input signal Acquisition Circuit output, described capacitor C 30 other ends and diode D6 anode, resistance R 48 one end connect, described diode D6 negative electrode, resistance R 48 other end ground connection.
According to a preferred embodiment of the present utility model: described current feedback regulating circuit comprises the current feedback circuit being connected with transforming circuit and the current PI adjustment control being connected with current feedback circuit, described current feedback circuit is also connected with driver module, and described current PI adjustment control is also connected with control system.
According to a preferred embodiment of the present utility model: the voltage PI adjustment control that described Voltage Feedback regulating circuit comprises the voltage feedback circuit being connected with welding machine output circuit and is connected with voltage feedback circuit.
According to a preferred embodiment of the present utility model: described welding machine output circuit comprises the out put reactor being connected with the first rectification circuit, and the output circuit being connected with out put reactor.
According to a preferred embodiment of the present utility model: also comprise holding circuit, described in comprise that circuit comprises protection indicator lamp and the overcurrent and overheating protection circuit being connected with control system respectively.
According to a preferred embodiment of the present utility model: described control system is that model is the control chip of SG3525.
With respect to inverter type welder of the prior art, the beneficial effects of the utility model are:
1, input adopts passive power factor corrective circuit, makes input net press wide ranges, with respect to passive PFC, is AC220V ± 10%, and active PFC circuit is AC95V-AC265V;
2, power factor (PF) is high, and power factor (PF) can reach 0.99;
3, input harmonics interference is little, little to electric network pollution.
[accompanying drawing explanation]
Fig. 1. the frame diagram of the utility model inverter type welder;
Fig. 2. the circuit diagram of the utility model passive power factor corrective circuit.
[specific embodiment]
Below in conjunction with drawings and embodiments, the utility model is described in further detail.
Consult shown in Fig. 1, the utility model provides a kind of inverter type welder, comprise power module and wire-feed motor, described power module comprises the first filter circuit 3 connecting successively, inverter circuit 4, transforming circuit 5, the first rectification circuit 6, welding machine output circuit, and the driver module 11 being connected with described inverter circuit 4, the control system 12 being connected with described driver module 11, the current feedback regulating circuit being connected with described transforming circuit 5, the Voltage Feedback regulating circuit being connected with described welding machine output circuit circuit, described current feedback regulating circuit is connected with driver module 11 and control system 12 respectively, described Voltage Feedback regulating circuit is connected with described current feedback regulating circuit, described wire-feed motor comprises voltage given circuit 17, described voltage given circuit 17 is connected with described Voltage Feedback regulating circuit, also comprise passive power factor corrective circuit 2, described passive power factor corrective circuit 2 is connected with the input of described filter circuit 3, described control system 12 is that model is the control chip of SG3525.
Wherein, described current feedback regulating circuit comprises the current feedback circuit 10 being connected with transforming circuit 5 and the current PI adjustment control 15 being connected with current feedback circuit 10, described current feedback circuit 10 is also connected with driver module 11, and described current PI adjustment control 15 is also connected with control system 12; Described Voltage Feedback regulating circuit comprises the voltage feedback circuit 9 being connected with welding machine output circuit and the voltage PI adjustment control 16 being connected with voltage feedback circuit 9; Described welding machine output circuit comprises the out put reactor 7 being connected with the first rectification circuit 6, and the output circuit 8 being connected with out put reactor 7.
In addition, in order better to realize defencive function, the utility model also comprises holding circuit, described in comprise that circuit comprises protection indicator lamp 13 and the overcurrent and overheating protection circuit 14 being connected with control system 12 respectively.
Consult shown in Fig. 2, described passive power factor corrective circuit 2 comprises the control circuit 27 of the chip that interconnective input rectification circuit 21, input signal Acquisition Circuit 22, output signal Acquisition Circuit 23, the second filter circuit 24, auxiliary power circuit 25, power tube IGBT circuit 26 and model are L4981.
Wherein, described input rectification circuit 21 comprises inductance T1, the input of described inductance T1 be connected in parallel resistance R 3, the resistance R 4 of mutually series connection, and the described inductance T1 output capacitor C 3 that is connected in parallel, described capacitor C 3 one end are connected with rectifier bridge D2.
Described input signal Acquisition Circuit 22 comprises resistance R 6, resistance R 8, resistance R 13, resistance R 15, resistance R 16, resistance R 19, capacitor C 13, capacitor C 14, inductance L 1, described resistance R 13, resistance R 19 one end, inductance L 1 one end is connected with input rectification circuit 21 outputs respectively, the other end and resistance R 8, resistance R 15 one end and capacitor C 13 one end connect, described capacitor C 13 other ends are connected with resistance R 8 other ends through resistance R parallel with one another 6 and capacitor C 14, described resistance R 15 is connected in parallel with resistance R 8, described resistance R 8 other ends are connected with L4981 chip 7 pin, described resistance R 19 other ends are connected with L4981 chip 4 pin through resistance R 16.
Described described output signal Acquisition Circuit 23 comprises resistance R 22, resistance R 23, resistance R 25, diode D3, described diode D3 anode is connected with input signal Acquisition Circuit 22 outputs, resistance R 22, resistance R 23, resistance R 25 ground connection of negative electrode through being mutually connected in series, one end that resistance 23 is connected with resistance R 25 is also connected with L4981 chip 14 pin.
Described described the second filter circuit 24 comprises capacitor C 19, capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R 31, resistance R 32, resistance R 33, resistance R 34, resistance R 35, resistance R 36, described capacitor C 19, capacitor C 21, capacitor C 23 one end and resistance R 33, resistance R 36 one end are connected with output signal Acquisition Circuit 23, described capacitor C 19, capacitor C 21, capacitor C 23 other ends respectively with capacitor C 20, capacitor C 22, capacitor C 24 connects, described resistance R 33, resistance R 36 is respectively through resistance R 31, resistance R 34 and resistance R 32, resistance R 35 connects.
Described described auxiliary power circuit 25 comprises LM7815 chip, capacitor C 1, capacitor C 7, capacitor C 11, capacitor C 12, described capacitor C 1 is connected to input and the earth terminal of LM7815 chip, described capacitor C 7, capacitor C 11, capacitor C 12 are connected in parallel respectively, and being connected in output and the earth terminal of LM7815 chip, the output of described LM7815 chip is also connected with L4981 chip 19 pin.
Described described power tube IGBT circuit 26 comprises resistance R 45, resistance R 46, resistance R 47, resistance R 48, resistance R 49, diode D4, diode D5, diode D6, power tube Q1, power tube Q2 and capacitor C 30, described resistance R 45, resistance R 46, resistance R 47, resistance R 49 one end, diode D4, diode D5 negative electrode is connected with L4981 chip 20 pin respectively, described resistance R 45, resistance R 49 other end ground connection, described resistance R 46 other ends, diode D4 anode is connected with power tube Q1 base stage, described resistance R 47 other ends, diode D5 anode is connected with power tube Q2 base stage, described power tube Q1, power tube Q2 source ground, described capacitor C 30 one end and power tube Q1, the power tube Q2 connection that drains, and be connected with input signal Acquisition Circuit 22 outputs, described capacitor C 30 other ends and diode D6 anode, resistance R 48 one end connect, described diode D6 negative electrode, resistance R 48 other end ground connection.
The utility model is the work that realizes by the following, article be passive power factor corrective circuit:
Input rectification circuit in passive power factor corrective circuit 2 21 is connected with single phase alternating current power supply (AC95V-265V) 1, and single-phase alternating current (AC95V-265V) is input to the inductance L 1 in input signal Acquisition Circuit 22 after the D2 rectifier bridge rectification in input rectification circuit 21, voltage swing signal after rectification is through resistance R 13, R8, 7 pin of input L4981 after R15 gathers, voltage signal is through R19, 4 pin of input L4981 after R16 gathers, output voltage signal is by R22, R23, after R25 dividing potential drop, enter 14 pin of L4981, the large I of output current collects by the pressure drop on current divider T3, when the voltage signal collecting or current signal are greater than preset value, L4981 chip envelope ripple, with this, realize defencive function.L4981 driving frequency is by C27, R43, R44 determines, the frequency of the utility model drive circuit is 50KHZ, by the D3 in described power tube IGBT circuit 26, D4, Q1, the Boost topology on-off circuit that Q2 forms is realized boost function to input voltage, L4981 chip is controlled the size of output voltage by the gauge tap pipe turn-on and turn-off time, switching tube ON time is longer, output voltage is higher, the voltage of diode D3 output is through capacitor C 19, capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24 filtering, stable output direct current 350V voltage.
And make by the design of above-mentioned inversion gas-shielded welder: the utlity model has input net and press wide ranges, is AC220V ± 10% with respect to passive PFC, and active PFC circuit is AC95V-AC265V; Power factor (PF) is high, and power factor (PF) can reach 0.99; Input harmonics disturbs little, little to electric network pollution.
Foregoing detailed description is only exemplary description, and those skilled in the art in the situation that do not depart from the scope and spirit that the utility model is protected, can design various embodiments according to different actual needs.
Claims (10)
1. an inverter type welder, comprise power module and wire-feed motor, described power module comprises the first filter circuit (3) connecting successively, inverter circuit (4), transforming circuit (5), the first rectification circuit (6), welding machine output circuit, and the driver module (11) being connected with described inverter circuit (4), the control system (12) being connected with described driver module (11), the current feedback regulating circuit being connected with described transforming circuit (5), the Voltage Feedback regulating circuit being connected with described welding machine output circuit, described current feedback regulating circuit is connected with driver module (11) and control system (12) respectively, described Voltage Feedback regulating circuit is connected with described current feedback regulating circuit, described wire-feed motor comprises voltage given circuit (17), described voltage given circuit (17) is connected with described Voltage Feedback regulating circuit, it is characterized in that: also comprise passive power factor corrective circuit (2), described passive power factor corrective circuit (2) is connected with the input of described filter circuit (3).
2. inverter type welder according to claim 1, is characterized in that: described passive power factor corrective circuit (2) comprises interconnective input rectification circuit (21), input signal Acquisition Circuit (22), output signal Acquisition Circuit (23), the second filter circuit (24), auxiliary power circuit (25), power tube IGBT circuit (26) and control circuit (27).
3. inverter type welder according to claim 2, it is characterized in that: described input rectification circuit (21) comprises inductance T1, resistance R 3, resistance R 4 that the input of described inductance T1 is connected in parallel and mutually connects, the described inductance T1 output capacitor C 3 that is connected in parallel, described capacitor C 3 one end are connected with rectifier bridge D2.
4. inverter type welder according to claim 3, it is characterized in that: input signal Acquisition Circuit (22) comprises resistance R 6, resistance R 8, resistance R 13, resistance R 15, resistance R 16, resistance R 19, capacitor C 13, capacitor C 14, inductance L 1, described resistance R 13, resistance R 19 one end, inductance L 1 one end is connected with input rectification circuit (21) output respectively, the other end and resistance R 8, resistance R 15 one end and capacitor C 13 one end connect, described capacitor C 13 other ends are connected with resistance R 8 other ends through resistance R parallel with one another 6 and capacitor C 14, described resistance R 15 is connected in parallel with resistance R 8, described resistance R 8 other ends are connected with L4981 chip 7 pin, described resistance R 19 other ends are connected with L4981 chip 4 pin through resistance R 16.
5. inverter type welder according to claim 3, it is characterized in that: described output signal Acquisition Circuit (23) comprises resistance R 22, resistance R 23, resistance R 25, diode D3, described diode D3 anode is connected with input signal Acquisition Circuit (22) output, resistance R 22, resistance R 23, resistance R 25 ground connection of negative electrode through being mutually connected in series, one end that resistance 23 is connected with resistance R 25 is also connected with L4981 chip 14 pin.
6. inverter type welder according to claim 3, it is characterized in that: described the second filter circuit (24) comprises capacitor C 19, capacitor C 20, capacitor C 21, capacitor C 22, capacitor C 23, capacitor C 24, resistance R 31, resistance R 32, resistance R 33, resistance R 34, resistance R 35, resistance R 36, described capacitor C 19, capacitor C 21, capacitor C 23 one end and resistance R 33, resistance R 36 one end are connected with output signal Acquisition Circuit (23), described capacitor C 19, capacitor C 21, capacitor C 23 other ends respectively with capacitor C 20, capacitor C 22, capacitor C 24 connects, described resistance R 33, resistance R 36 is respectively through resistance R 31, resistance R 34 and resistance R 32, resistance R 35 connects.
7. inverter type welder according to claim 3, it is characterized in that: described auxiliary power circuit (25) comprises LM7815 chip, capacitor C 1, capacitor C 7, capacitor C 11, capacitor C 12, described capacitor C 1 is connected to input and the earth terminal of LM7815 chip, described capacitor C 7, capacitor C 11, capacitor C 12 are connected in parallel respectively, and being connected in output and the earth terminal of LM7815 chip, the output of described LM7815 chip is also connected with L4981 chip 19 pin.
8. inverter type welder according to claim 3, is characterized in that: described power tube IGBT circuit (26) comprises resistance R 45, resistance R 46, resistance R 47, resistance R 48, resistance R 49, diode D4, diode D5, diode D6), power tube Q1, power tube Q2 and capacitor C 30, described resistance R 45, resistance R 46, resistance R 47, resistance R 49 one end, diode D4, diode D5 negative electrode is connected with L4981 chip 20 pin respectively, described resistance R 45, resistance R 49 other end ground connection, described resistance R 46 other ends, diode D4 anode is connected with power tube Q1 base stage, described resistance R 47 other ends, diode D5 anode is connected with power tube Q2 base stage, described power tube Q1, power tube Q2 source ground, described capacitor C 30 one end and power tube Q1, the power tube Q2 connection that drains, and be connected described capacitor C 30 other ends and diode D6 anode with input signal Acquisition Circuit (22) output, resistance R 48 one end connect, described diode D6 negative electrode, resistance R 48 other end ground connection.
9. inverter type welder according to claim 1, it is characterized in that: described current feedback regulating circuit comprises the current feedback circuit (10) being connected with transforming circuit (5) and the current PI adjustment control (15) being connected with current feedback circuit (10), described current feedback circuit (10) is also connected with driver module (11), and described current PI adjustment control (15) is also connected with control system (12).
10. inverter type welder according to claim 1, is characterized in that: described Voltage Feedback regulating circuit comprises the voltage feedback circuit (9) being connected with welding machine output circuit and the voltage PI adjustment control (16) being connected with voltage feedback circuit (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320077646.0U CN203448846U (en) | 2012-08-15 | 2013-02-20 | Inverter welding machine |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220404614 | 2012-08-15 | ||
| CN201220404614.2 | 2012-08-15 | ||
| CN201320077646.0U CN203448846U (en) | 2012-08-15 | 2013-02-20 | Inverter welding machine |
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| Publication Number | Publication Date |
|---|---|
| CN203448846U true CN203448846U (en) | 2014-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320077646.0U Expired - Fee Related CN203448846U (en) | 2012-08-15 | 2013-02-20 | Inverter welding machine |
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| Country | Link |
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| CN (1) | CN203448846U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425027A (en) * | 2016-07-13 | 2017-02-22 | 苏州新逸喆电子科技有限公司 | Current control module applied to wireless electric welding machine |
-
2013
- 2013-02-20 CN CN201320077646.0U patent/CN203448846U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106425027A (en) * | 2016-07-13 | 2017-02-22 | 苏州新逸喆电子科技有限公司 | Current control module applied to wireless electric welding machine |
| CN106425027B (en) * | 2016-07-13 | 2018-08-10 | 苏州新逸喆电子科技有限公司 | A kind of current control module for wireless electric welding machine |
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| 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: 20140226 |
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| CF01 | Termination of patent right due to non-payment of annual fee |