CN213906564U - Contravariant welding power drive control panel - Google Patents
Contravariant welding power drive control panel Download PDFInfo
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- CN213906564U CN213906564U CN202023013201.5U CN202023013201U CN213906564U CN 213906564 U CN213906564 U CN 213906564U CN 202023013201 U CN202023013201 U CN 202023013201U CN 213906564 U CN213906564 U CN 213906564U
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Abstract
The utility model discloses an contravariant welding power drive control board, which comprises a circuit board, the positive outer wall fixed mounting of circuit board has the mutual-inductor interface, the one end electric connection of mutual-inductor interface has resistance two, resistance two's one end electric connection has resistance four, one side parallel connection of resistance four has electric capacity two, one side parallel connection of electric capacity two has electric capacity one, resistance four's one end electric connection has high frequency transformer one, high frequency transformer one's one end electric connection has resistance five, the other end electric connection of mutual-inductor interface has resistance one, resistance one's one end electric connection has resistance three, and form parallelly connected through the wire between resistance three and the resistance two, resistance three's one side electric connection has electric capacity four, one side electric connection of electric capacity four has electric capacity three. The utility model discloses very stable drive line makes the circuit board, is 20 1KHz through test frequency, and the amplitude is 15V, and dead time is 5us, and rise time is greater than 4 0.5 times of fall time, reaches the designing requirement.
Description
Technical Field
The utility model relates to an contravariant welding power supply technical field especially relates to an contravariant welding power supply drive control board.
Background
The principle of the inverter welding power supply is that three-phase 380V is rectified and then converted into pulsating direct current, then a bridge inverter unit is formed by four IGBT devices and is divided into two groups to be conducted in a crossed mode, the direct current is converted into high-frequency alternating current, and the high-frequency transformer is used for reducing voltage and rectifying the alternating current to output the direct current to be used as the welding power supply. The whole inversion process requires that four IGBT device driving circuits must reliably and stably output according to strictly regulated frequency, and meanwhile, enough dead time (preventing the IGBT devices from direct connection) is ensured.
However, the common inverter power supply in the market has a problem in the driving process, which causes the failure of the inversion process. Therefore, it is desirable to design a driving control board for an inverter welding power supply to solve the above problems.
Disclosure of Invention
The utility model aims at solving the problem that the stability of the driving circuit existing in the prior art is poor, causing the shortcoming of inversion process failure in the existing driving process, and providing an inversion welding power drive control panel.
In order to achieve the above purpose, the utility model adopts the following technical scheme: an inverter welding power supply driving control panel comprises a circuit board, wherein a mutual inductor interface is fixedly installed on the outer wall of the front side of the circuit board, one end of the mutual inductor interface is electrically connected with a resistor II, one end of the resistor II is electrically connected with a resistor IV, one side of the resistor IV is connected with a capacitor II in parallel, one side of the capacitor II is connected with a capacitor I in parallel, one end of the resistor IV is electrically connected with a high-frequency transformer I, one end of the high-frequency transformer I is electrically connected with a resistor V, the other end of the mutual inductor interface is electrically connected with a resistor I, one end of the resistor I is electrically connected with a resistor III, the resistor III and the resistor II are connected in parallel through a conducting wire, one side of the resistor III is electrically connected with the capacitor IV in parallel, one side of the capacitor IV is electrically connected with a capacitor III in parallel, and one end of the resistor III is electrically connected with the high-frequency transformer II, and one end of the high-frequency transformer II is electrically connected with a resistor six, and the resistor six is electrically connected with one end of the resistor five.
Furthermore, a power interface is fixedly installed on the outer wall of the front side of the circuit board, and a given voltage interface is fixedly installed on the outer wall of the front side of the circuit board.
Furthermore, the front outer wall of the circuit board is fixedly provided with a bridge type inversion unit, the input end of the bridge type inversion unit is electrically connected with the output ends of the first high-frequency transformer and the second high-frequency transformer, and the output end of the bridge type inversion unit is electrically connected with four output lines.
The utility model has the advantages that:
1. the four output lines are divided into two groups for cross conduction through the four output lines, the high-frequency transformer I and the high-frequency transformer II, direct current is converted into high-frequency alternating current, and the direct current is output through the high-frequency transformer I and the high-frequency transformer II in a voltage reduction and rectification mode and is used as a welding power supply.
2. Through the arranged bridge type inversion unit, four IGBT device driving circuits in the bridge type inversion unit need to reliably and stably output strictly according to the specified frequency, meanwhile, enough dead time is guaranteed, and inversion process failure is avoided.
Drawings
Fig. 1 is a schematic front structural view of an inverter welding power driving control board according to the present invention;
fig. 2 is an amplitude diagram of a driving control board of an inverter welding power supply according to the present invention;
fig. 3 is a schematic circuit diagram of a driving control board of an inverter welding power supply according to the present invention;
fig. 4 is a partial enlarged view of a driving control board a of the inverter welding power supply according to the present invention;
in the figure: the circuit board 1, the power supply interface 2, the given voltage interface 3, the mutual inductor interface 4, the resistor I5, the resistor II 6, the resistor III 7, the resistor IV 8, the capacitor I9, the capacitor II 10, the capacitor III 11, the capacitor IV 12, the high-frequency transformer I13, the high-frequency transformer II 14, the resistor V15, the resistor VI 16, the bridge type inversion unit 17 and the output line 18.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-4, an inverter welding power driving control board includes a circuit board 1, a transformer interface 4 is fixedly installed on an outer wall of a front surface of the circuit board 1, the transformer interface 4 is used for electrically connecting a current transformer, one end of the transformer interface 4 is electrically connected with a resistor two 6, the resistor two 6 is numbered R19, the resistor R19 is 10R, one end of the resistor two 6 is electrically connected with a resistor four 8, the resistor four 8 is numbered R26, the resistor R26 is 200R, one side of the resistor four 8 is connected in parallel with a capacitor two 10, the capacitor two 10 is numbered C31, the C31 is 105, one side of the capacitor two 10 is connected in parallel with a capacitor one 9, the capacitor one 9 is numbered C21, the C21 is 105, one end of the resistor four 8 is electrically connected with a high frequency transformer one 13, one end of the high frequency transformer one 13 is connected with a resistor five 15, the resistor five 15 is numbered R17, and the resistor R17 is 10R, the other end of the transformer interface 4 is electrically connected with a first resistor 5, the first resistor 5 is numbered as R16, the resistance of R16 is 10R, one end of the first resistor 5 is electrically connected with a third resistor 7, the third resistor 7 is numbered as R25, the resistance of R25 is 200R, the third resistor 7 and the second resistor 6 are connected in parallel through a wire, one side of the third resistor 7 is electrically connected with a fourth capacitor 12 in parallel, one side of the fourth capacitor 12 is numbered as C22, the specification of C22 is 105, one side of the fourth capacitor 12 is electrically connected with a third capacitor 11 in parallel, the number of the third capacitor 11 is C24, the specification of C24 is 105, one end of the third resistor 7 is electrically connected with a second high-frequency transformer 14, one end of the second high-frequency transformer 14 is electrically connected with a sixth resistor 16, the number of the sixth resistor 16 is R16, the resistance of R16 is 10R, and the sixth resistor 16 is electrically connected with one end of the fifth resistor 15.
Further, a power interface 2 is fixedly installed on the outer wall of the front side of the circuit board 1, the power interface 2 is used for connecting a power supply, a given voltage interface 3 is fixedly installed on the outer wall of the front side of the circuit board 1, and the given voltage interface 3 is used for connecting a set reference voltage.
Further, a bridge type inversion unit 17 is fixedly mounted on the outer wall of the front side of the circuit board 1, an input end of the bridge type inversion unit 17 is electrically connected with output ends of the first high-frequency transformer 13 and the second high-frequency transformer 14, the first high-frequency transformer 13 and the second high-frequency transformer step-down rectification output direct current are used as a welding power supply, an output end of the 14 bridge type inversion unit 17 is electrically connected with four output lines 18, and the four output lines 18 are divided into two groups to be in cross conduction to convert the direct current into high-frequency alternating current.
The working principle is as follows: three-phase 380V is rectified and then converted into pulsating direct current, then a bridge type inversion unit 17 is formed by four IGBT devices and is divided into two groups to be conducted in a crossed mode, the direct current is converted into high-frequency alternating current, and the high-frequency alternating current is subjected to voltage reduction and rectification through a first high-frequency transformer 13 and a second high-frequency transformer 14 to output the direct current to be used as a welding power supply. The whole inversion process requires that four IGBT device driving circuits must reliably and stably output according to strictly regulated frequency, and enough dead time is ensured. The tested frequency is 20 +/-1 KHz, the amplitude is +/-15V, the dead time is 5us, and the rising time is 4 +/-0.5 times greater than the falling time, thereby meeting the design requirement. Through the aging test of the whole machine installation, the test production from small batch, the production from medium batch and the application from large batch are all stable and reliable, and the failure rate is 0.3 percent.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is familiar with the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered in the protection scope of the present invention.
Claims (3)
1. The driving control panel for the inverter welding power supply comprises a circuit board (1) and is characterized in that a mutual inductor interface (4) is fixedly installed on the outer wall of the front side of the circuit board (1), one end of the mutual inductor interface (4) is electrically connected with a second resistor (6), one end of the second resistor (6) is electrically connected with a fourth resistor (8), one side of the fourth resistor (8) is connected with a second capacitor (10) in parallel, one side of the second capacitor (10) is connected with a first capacitor (9) in parallel, one end of the fourth resistor (8) is electrically connected with a first high-frequency transformer (13), one end of the first high-frequency transformer (13) is electrically connected with a fifth resistor (15), the other end of the mutual inductor interface (4) is electrically connected with a first resistor (5), one end of the first resistor (5) is electrically connected with a third resistor (7), and the third resistor (7) and the second resistor (6) are connected in parallel through a wire, one side electrical property of resistance three (7) is parallelly connected with electric capacity four (12), one side electrical property of electric capacity four (12) is parallelly connected with electric capacity three (11), the one end electrical connection of resistance three (7) has high frequency transformer two (14), the one end electrical connection of high frequency transformer two (14) has resistance six (16), and the one end electrical connection of resistance six (16) and resistance five (15).
2. The inverter welding power supply driving control board according to claim 1, wherein the power interface (2) is fixedly installed on the outer wall of the front surface of the circuit board (1), and the given voltage interface (3) is fixedly installed on the outer wall of the front surface of the circuit board (1).
3. The inverter welding power supply driving control board according to claim 1, wherein a bridge inverter unit (17) is fixedly mounted on the outer wall of the front side of the circuit board (1), the input end of the bridge inverter unit (17) is electrically connected with the output ends of the first high-frequency transformer (13) and the second high-frequency transformer (14), and the output end of the bridge inverter unit (17) is electrically connected with four output lines (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023013201.5U CN213906564U (en) | 2020-12-15 | 2020-12-15 | Contravariant welding power drive control panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023013201.5U CN213906564U (en) | 2020-12-15 | 2020-12-15 | Contravariant welding power drive control panel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213906564U true CN213906564U (en) | 2021-08-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023013201.5U Active CN213906564U (en) | 2020-12-15 | 2020-12-15 | Contravariant welding power drive control panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213906564U (en) |
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2020
- 2020-12-15 CN CN202023013201.5U patent/CN213906564U/en active Active
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