CN2880347Y - Double-tube inversed impact switch circuit in reversed changing welder - Google Patents
Double-tube inversed impact switch circuit in reversed changing welder Download PDFInfo
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- CN2880347Y CN2880347Y CN 200620039667 CN200620039667U CN2880347Y CN 2880347 Y CN2880347 Y CN 2880347Y CN 200620039667 CN200620039667 CN 200620039667 CN 200620039667 U CN200620039667 U CN 200620039667U CN 2880347 Y CN2880347 Y CN 2880347Y
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Abstract
The utility model relates to a double-tube fly-back switch circuit for inverter welding machines, and the circuit includes a control circuit, an assistant circuit, a rectifying circuit, a filtering circuit, an isolation and transformation circuit, a driving circuit, a frequency-converting circuit, a feedback sampling circuit and a modulation circuit. The alternate current is connected with the driving circuit and the frequency-converting circuit through the rectifying circuit and the filtering circuit. The driving circuit is connected with the frequency-converting circuit. The frequency-converting circuit is isolated and connected with the transformation circuits. One of the transformation circuits is connected with the first high-frequency rectifying circuit and output to the assistant circuit, and the other of the transformation circuits is connected with the second high-frequency rectifying circuit and output to the control circuit. One end of the feedback sampling circuit is connected with the control circuit, and the other end of the feedback sampling circuit is connected with the driving circuit. The utility model can be used in cases with large network voltage fluctuation range (plus or minus 20%), input power of the utility model is 75% of that of former electromagnetic induction transformers, weight of the utility model is one third of former transformers, and volume of the utility model is a half of former transformers. The utility model applies to WS (M) series of welding machines.
Description
Technical field
The utility model relates to a kind of welding machine, relates in particular to control loop and subsidiary loop in a kind of inverter type welder.
Background technology
Along with the continuous development of welding field, also cause the attention of people to welding energy.Since first inverter type welder of U.S.'s development in 1972, inversion transformation technique has been obtained develop rapidly, from original IGCT is that main main circuit structure develops into driving and integrated intelligent (IPM) main circuit pattern of primary module, reverse frequency was developed into the hundreds of KHz of today by former several KHzs, huge contribution is made in the saving that develops into the energy of inversion transformation technique, so far for this reason, the energy-efficient of main circuit of the welding machine still is the emphasis of welding field research.But along with the raising of welding machine control loop and subsidiary loop power, and control circuit is to the raising of power supply component stability, make control loop and subsidiary loop to waste of electric energy and influence the stable a series of problems of welding machine, cause people's attention.
As seen from Figure 1: control loop and subsidiary loop all are to adopt induction transformer as main power supply part in the conventional inversion welding machine because simple in structure, make some advantages such as simple and easy and extensively adopted by people.But its shortcoming is that time output changes big (for ± 10%) to the fluctuation of line voltage, and when power output increases to the waste of power supply and the increase of volume and weight.Therefore, become the emphasis that the technical staff pays close attention to and develops for the control loop of welding machine and the power supply component of subsidiary loop.
Summary of the invention
The utility model technical issues that need to address have provided the dual switch flyback switch circuit in a kind of inverter type welder, are intended to solve above-mentioned defective.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: control loop, subsidiary loop, rectification circuit, filter circuit, isolation and transforming circuit, drive circuit, frequency changer circuit, feedback sample circuit, modulation circuit; Described alternating current links to each other with drive circuit, frequency changer circuit through rectification circuit, filter circuit; Drive circuit is connected with frequency changer circuit; Frequency changer circuit outputs to subsidiary loop, another road and links to each other with second high-frequency rectification and output to control loop through isolating to link to each other with first high-frequency rectification with a road of transforming circuit; Described feedback sample circuit one end links to each other with control loop, and the other end links to each other with drive circuit through modulation circuit.
Compared with prior art, the beneficial effects of the utility model are: can be under the big occasion of voltage ripple of power network scope operate as normal (can ± 20%), the power supply input power is 75% of an original induction transformer, weight is original 1/3, volume half.And the serial welding machine of application WS (M).
Description of drawings
Fig. 1 is the prior art module map;
Fig. 2 is the utility model module map;
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the utility model is described in further detail:
As seen from Figure 2: the utility model comprises: control loop, subsidiary loop, rectification circuit, filter circuit, isolation and transforming circuit, drive circuit, frequency changer circuit, feedback sample circuit, modulation circuit; Described alternating current links to each other with drive circuit, frequency changer circuit through rectification circuit, filter circuit; Drive circuit is connected with frequency changer circuit; Frequency changer circuit outputs to subsidiary loop, another road and links to each other with second high-frequency rectification and output to control loop through isolating to link to each other with first high-frequency rectification with a road of transforming circuit; Described feedback sample circuit one end links to each other with control loop, and the other end links to each other with drive circuit through modulation circuit.
AC power is through rectifier bridge rectification, capacitor filtering, the output high voltage direct current, be frequency conversion part and drive part power supply, make drive part work earlier and the driving signal is provided, drive the switching tube work of frequency conversion part and produce high-frequency alternating current, through the high frequency transformer transformation, rectification once more, be filtering to output, power to control loop.Simultaneously, through another road direction auxiliary power supply circuit.
When grid voltage change or output when changing, to drive part, make it change output pulse width by feedback sample, modulation back, export direct current stably.
Claims (1)
1. the dual switch flyback switch circuit in the inverter type welder comprises: control loop, subsidiary loop, rectification circuit, filter circuit, isolation and transforming circuit, drive circuit, frequency changer circuit, feedback sample circuit, modulation circuit; It is characterized in that: described alternating current links to each other with drive circuit, frequency changer circuit through rectification circuit, filter circuit; Drive circuit is connected with frequency changer circuit; Frequency changer circuit outputs to subsidiary loop, another road and links to each other with second high-frequency rectification and output to control loop through isolating to link to each other with first high-frequency rectification with a road of transforming circuit; Described feedback sample circuit one end links to each other with control loop, and the other end links to each other with drive circuit through modulation circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039667 CN2880347Y (en) | 2006-02-22 | 2006-02-22 | Double-tube inversed impact switch circuit in reversed changing welder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620039667 CN2880347Y (en) | 2006-02-22 | 2006-02-22 | Double-tube inversed impact switch circuit in reversed changing welder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2880347Y true CN2880347Y (en) | 2007-03-21 |
Family
ID=37880185
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620039667 Expired - Fee Related CN2880347Y (en) | 2006-02-22 | 2006-02-22 | Double-tube inversed impact switch circuit in reversed changing welder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2880347Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437755A (en) * | 2011-12-28 | 2012-05-02 | 李银亭 | Inverse power supply control system |
-
2006
- 2006-02-22 CN CN 200620039667 patent/CN2880347Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102437755A (en) * | 2011-12-28 | 2012-05-02 | 李银亭 | Inverse power supply control system |
| CN102437755B (en) * | 2011-12-28 | 2014-02-19 | 房世平 | Inverse power supply control system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070321 |