CN107317505B - Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching - Google Patents
Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching Download PDFInfo
- Publication number
- CN107317505B CN107317505B CN201710552084.3A CN201710552084A CN107317505B CN 107317505 B CN107317505 B CN 107317505B CN 201710552084 A CN201710552084 A CN 201710552084A CN 107317505 B CN107317505 B CN 107317505B
- Authority
- CN
- China
- Prior art keywords
- full
- resistor
- bridge
- stage
- capacitor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000001514 detection method Methods 0.000 claims abstract description 46
- 238000006243 chemical reaction Methods 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 138
- 230000005669 field effect Effects 0.000 claims description 49
- 238000001914 filtration Methods 0.000 claims description 22
- 230000003287 optical effect Effects 0.000 claims description 16
- 230000000087 stabilizing effect Effects 0.000 claims description 3
- 230000009977 dual effect Effects 0.000 claims 5
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000003466 welding Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/42—Conversion of dc power input into ac power output without possibility of reversal
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/53—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M7/537—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters
- H02M7/5387—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration
- H02M7/53871—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only, e.g. single switched pulse inverters in a bridge configuration with automatic control of output voltage or current
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K9/00—Arc welding or cutting
- B23K9/10—Other electric circuits therefor; Protective circuits; Remote controls
- B23K9/1006—Power supply
- B23K9/1043—Power supply characterised by the electric circuit
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion, which comprises an input circuit, a first rectifying circuit, a second rectifying circuit, a filter circuit, a double-circuit relay, a double-circuit full-bridge circuit, a first main transformer, a second main transformer and a voltage detection circuit, wherein the output end of the input circuit is respectively connected with the first rectifying circuit and the second rectifying circuit; the first rectifying circuit and the second rectifying circuit are connected with each other and then connected with the filter circuit; the filter circuit is connected with the two-way relay; the two-way relay is connected with the two-way full-bridge loop; the double-path full-bridge loop is respectively connected with the first main transformer and the second main transformer; the voltage detection loop is connected with the two-way relay. The beneficial effects of the invention are as follows: the operation is stable, the input voltage can be automatically identified, and the device can work normally under multiple voltages.
Description
Technical Field
The invention relates to the field of welding machines, in particular to a double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion.
Background
The essence of the welding machine is a transformer, and in the actual operation process of the welding machine, the welding machine always faces to a multi-voltage power input environment; in the prior art, a general welding machine can only adapt to single power grid voltage power supply; or adapting to different input voltages by adopting a manual switching mode; the process is complicated, and the welding machine is easy to cause faults, and the actual production operation requirement can not be met.
Disclosure of Invention
The invention aims to provide a double-circuit full-bridge inverter circuit which is stable in operation, can automatically identify input voltage and can normally work under multiple voltages and is suitable for double-voltage automatic conversion. The invention is realized by the following technical scheme:
the invention discloses a double-path full-bridge inverter circuit suitable for double-voltage automatic conversion, which comprises an input circuit, a first rectifying circuit, a second rectifying circuit, a filter circuit, a double-path relay, a double-path full-bridge loop, a first main transformer, a second main transformer and a voltage detection loop, wherein the output end of the input circuit is respectively connected with the first rectifying circuit and the second rectifying circuit; the first rectifying circuit and the second rectifying circuit are connected with each other and then connected with the filter circuit; the filter circuit is connected with the two-way relay; the two-way relay is connected with the two-way full-bridge loop; the double-path full-bridge loop is respectively connected with the first main transformer and the second main transformer; the voltage detection loop is connected with the two-way relay.
The first rectifying circuit comprises an input first interface, an input second interface, an input third interface, an input fourth interface, an input first resistor, an input first diode, an input fifth interface, an input first capacitor, an input first light-emitting diode, an input second capacitor, an input second diode, an input thermistor and an input second resistor; all output ports of the first input interface and the fourth input interface are connected in series and then are respectively connected with the fifth input interface; the input first resistor, the input first diode and the input first light-emitting diode are connected in series and then connected in parallel with the input fifth interface; all output ports of the second interface and the third interface are connected in series and then connected in series with the second light emitting diode, the second diode and the thermistor; the input first capacitor and the input first light-emitting diode are connected in parallel between the input fourth interface and the input first diode; the input second capacitor is connected in parallel with the input second light emitting diode between the input second diode and the input third interface.
The double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion, wherein the first rectifying circuit and the second rectifying circuit are bridge rectifying circuits; the first rectifying circuit is connected with the input second interface; the second rectifying circuit is connected with the input third interface.
The filtering circuit comprises a filtering switch, a filtering first resistor, a filtering first polar capacitor, a filtering second resistor, a filtering second polar capacitor and a filtering third capacitor; the first filtering capacitor with polarity is connected with the second filtering capacitor with polarity; the second filtering resistor is connected with the third filtering capacitor; the filter switch, the filter first resistor, the filter first polar capacitor and the filter second polar capacitor, the filter second resistor and the filter third capacitor are connected in parallel; the output ends of the first rectifying circuit and the second rectifying circuit are respectively connected with the filter switch and the filter second polar capacitor.
The double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion, wherein the double-circuit relay comprises a relay interface and a double-circuit switch; the input end of the relay interface is connected in series and then connected with the second filtering resistor and the third filtering capacitor in parallel; the output end of the relay interface is connected with the two-way switch and controls the opening and closing of the two-way switch.
The double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion comprises a full-bridge first resistor, a full-bridge first capacitor, a full-bridge second resistor, a full-bridge first field effect transistor, a full-bridge second field effect transistor, a full-bridge third field effect transistor, a full-bridge fourth field effect transistor, a full-bridge third resistor, a full-bridge fourth resistor, a full-bridge fifth resistor, a full-bridge sixth resistor, a driving module, a full-bridge seventh resistor, a full-bridge third capacitor, a full-bridge fourth capacitor, a full-bridge eighth resistor and a full-bridge interface; the full-bridge first resistor, the full-bridge first capacitor, the full-bridge second resistor, the full-bridge first field effect transistor and the full-bridge fourth field effect transistor are connected in series; the full-bridge second field effect transistor, the full-bridge third field effect transistor, the full-bridge seventh resistor, the full-bridge third capacitor, the full-bridge fourth capacitor and the full-bridge eighth resistor are connected in series; the full-bridge first field effect transistor is connected with a full-bridge third resistor; the full-bridge fourth field effect transistor is connected with a full-bridge sixth resistor; the full-bridge second field effect transistor is connected with a full-bridge fourth resistor; the full-bridge third field effect transistor is connected with a full-bridge fifth resistor; the full-bridge third resistor, the full-bridge fourth resistor, the full-bridge fifth resistor and the full-bridge sixth resistor are all connected with the driving module; the driving module is also connected between the full-bridge first capacitor and the full-bridge second capacitor, and between the full-bridge third capacitor and the full-bridge fourth capacitor; the full bridge interface is connected between the full bridge third capacitor and the full bridge fourth capacitor, and between the full bridge first capacitor and the full bridge second capacitor; the full-bridge interface is connected with the first main transformer; the full-bridge first resistor and the full-bridge second resistor are connected with a group of switches of the two-way switch; the two-way full-bridge loop is also provided with another group of circuits which are completely the same as the connection mode, and the circuits are connected with the other group of switches of the two-way switch and the second main transformer.
The voltage detection circuit comprises a detection primary circuit, a detection secondary circuit, a detection tertiary circuit and a detection quaternary circuit; the detection primary circuit comprises a primary optical coupler, a primary first resistor, a primary polar capacitor, a primary second resistor, a primary third resistor, a primary capacitor and a primary triode; one end of the first-stage optical coupler is connected with the first-stage first resistor, and the other end of the first-stage optical coupler is grounded; the other end of the first-stage first resistor is connected with 24V voltage; one end of the first-stage capacitor with polarity is grounded, and the other end of the first-stage capacitor is connected to the first-stage second resistor and is connected between the first-stage first resistor and the first-stage optical coupler; the first-stage second resistor is connected with the first-stage third resistor; the first-stage third resistor is grounded; the first-stage capacitor is connected to the first-stage triode and is connected between the first-stage second resistor and the first-stage third resistor; one output end of the first-stage triode is grounded, and the other output end of the first-stage triode is connected with the detection second-stage circuit.
The two-way full-bridge inverter circuit suitable for automatic conversion of double voltages comprises a detection secondary circuit, a detection secondary circuit and a control circuit, wherein the detection secondary circuit comprises a secondary first diode, a secondary second diode, a secondary capacitor, a secondary first resistor, a secondary zener diode, a secondary field effect transistor, a secondary second resistor, a secondary third diode, a secondary third resistor and a secondary light-emitting diode; the second-stage first diode is connected with the first-stage triode; the second diode is connected with the second capacitor and then connected with the second first resistor in parallel; the second-stage voltage stabilizing diode, the second-stage field effect transistor and the second-stage second resistor are connected in series and then connected with the second-stage first resistor in parallel; the second-stage first diode is connected between the second-stage second diode and the second-stage capacitor; the second-stage third diode is connected with the second-stage second resistor in parallel; the second-stage third resistor is connected with the second-stage third diode in parallel after being connected with the second-stage light-emitting diode in series; the second-stage capacitor, the second-stage first resistor, the second-stage zener diode and the second-stage field effect tube are grounded.
The two-way full-bridge inverter circuit suitable for double-voltage automatic conversion comprises a detection three-stage circuit, a first detection circuit and a second detection circuit, wherein the detection three-stage circuit comprises a three-stage optical coupler, a three-stage first diode, a three-stage second diode, a three-stage capacitor, a three-stage polar capacitor, a three-stage zener diode, a three-stage field effect transistor, a first three-stage resistor, a second three-stage resistor and a three-stage third diode; the third-stage field effect transistor is connected with the first third-stage resistor and then connected with the second third-stage resistor and the third diode in parallel; the third-stage capacitor, the third-stage polar capacitor and the third-stage voltage stabilizing diode are respectively connected with the third-stage third diode, the second-stage resistor and the first-stage resistor and grounded; the third-stage first diode and the third-stage second diode are connected between the third-stage third diode and the third-stage capacitor; the third-stage optical coupler is connected with the third-stage first diode and then grounded; the third-stage second diode is connected with the second-stage first diode.
The double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion, wherein the detection four-stage circuit comprises a four-stage resistor, a four-stage light emitting diode and a four-stage diode; the four-stage resistor and the four-stage light emitting diode are connected in series and then connected in parallel with the first-stage resistor and the third-stage second diode.
The invention has the beneficial effects that: the operation is stable, the input voltage can be automatically identified, and the device can work normally under multiple voltages; and the full-bridge inversion has the unique performance advantage and high stability. The invention particularly provides a common loop for rectifying and filtering, and a series-parallel structure for an inversion loop, so that the defect that the service life of a capacitor of a voltage doubling scheme is seriously influenced is overcome.
Drawings
Fig. 1: the connection schematic diagram of the invention;
fig. 2: a schematic circuit diagram of the present invention;
in the figure: 1-input circuit, 2-first rectifying circuit, 3-second rectifying circuit, 4-filter circuit, 5-two-way relay, 6-two-way full bridge circuit, 7-first main transformer, 8-second main transformer, 9-voltage detection circuit, 101-input first interface, 102-input second interface, 103-input third interface, 104-input fourth interface, 105-input first resistor, 106-input first diode, 107-input fifth interface, 108-input first capacitor, 109-input first light emitting diode, 110-input second light emitting diode, 111-input second capacitor, 112-input second diode, 113-input thermistor, 114-input second resistor, 401-filter switch 402-filter first resistor, 403-filter first polar capacitor, 404-filter second resistor, 405-filter second polar capacitor, 406-filter third capacitor, 501-relay interface, 502-two-way switch, 601-full bridge first resistor, 602-full bridge first capacitor, 603-full bridge second capacitor, 604-full bridge second resistor, 605-full bridge first field effect transistor, 606-full bridge second field effect transistor, 607-full bridge third field effect transistor, 608-full bridge fourth field effect transistor, 609-full bridge third resistor, 610-full bridge fourth resistor, 611-full bridge fifth resistor, 612-full bridge sixth resistor, 613-drive module, 614-full bridge seventh resistor, 615-full bridge third capacitor, 616-full bridge fourth capacitance, 617-full bridge eighth resistance, 618-full bridge interface, 91-detect primary circuit, 92-detect secondary circuit, 93-detect tertiary circuit, 94-detect quaternary circuit, 901-primary optocoupler, 902-primary first resistance, 903-primary polarized capacitance, 904-primary second resistance, 905-primary third resistance, 906-primary capacitance, 907-primary triode, 908-secondary first diode, 909-secondary second diode, 910-secondary capacitance, 911-secondary first resistance, 912-secondary zener diode, 913-secondary field effect diode, 914-secondary second resistance, 915-secondary third diode, 916-secondary third resistance, 917-secondary light emitting diode, 918-tertiary optocoupler, 919-tertiary first diode, 920-tertiary second diode, 921-tertiary capacitance, 922-tertiary polarized capacitance, 923-tertiary zener diode, 924-tertiary field effect diode, 923-tertiary diode, 927-tertiary diode, 929-quaternary diode, 929-tertiary diode, fourth-tertiary diode.
Detailed Description
The invention is further described with reference to the drawings and detailed description which follow:
examples: the double-circuit full-bridge inverter circuit suitable for double-voltage automatic conversion comprises an input circuit 1, a first rectifying circuit 2, a second rectifying circuit 3, a filter circuit 4, a double-circuit relay 5, a double-circuit full-bridge loop 6, a first main transformer 7, a second main transformer 8 and a voltage detection loop 9, wherein the output end of the input circuit 1 is respectively connected with the first rectifying circuit 2 and the second rectifying circuit 3; the first rectifying circuit 2 and the second rectifying circuit 3 are connected with each other and then connected with the filter circuit 4; the filter circuit 4 is connected with the two-way relay 5; the two-way relay 5 is connected with the two-way full-bridge loop 6; the double-path full-bridge loop 6 is respectively connected with a first main transformer 7 and a second main transformer 8; the voltage detection loop 9 is connected with the two-way relay 5; the first rectifying circuit 2 includes an input first interface 101, an input second interface 102, an input third interface 103, an input fourth interface 104, an input first resistor 105, an input first diode 106, an input fifth interface 107, an input first capacitor 108, an input first light emitting diode 109, an input second light emitting diode 110, an input second capacitor 111, an input second diode 112, an input thermistor 113, and an input second resistor 114; all output ports of the input first interface 101 and the input fourth interface 104 are connected in series and then are respectively connected with the input fifth interface 107; the input first resistor 105, the input first diode 106 and the input first light emitting diode 109 are connected in series and then connected in parallel with the input fifth interface 107; all output ports of the second interface 102 and the third interface 103 are connected in series and then connected in series with the second light emitting diode 110, the second diode 112 and the thermistor 113 and then the second resistor 114; an input first capacitor 108 is connected in parallel with an input first light emitting diode 109 between the input fourth interface 104 and the input first diode 106; the input second capacitor 111 is connected in parallel with the input second light emitting diode 110 between the input second diode 112 and the input third interface 103; wherein the first rectifying circuit 2 and the second rectifying circuit 3 are bridge rectifying circuits; the first rectifying circuit 2 is connected with the input second interface 102; the second rectifying circuit 3 is connected with the input third interface 103; the filter circuit 4 comprises a filter switch 401, a filter first resistor 402, a filter first capacitor 403 with polarity, a filter second resistor 404, a filter second capacitor 405 with polarity and a filter third capacitor 406; the first filter capacitor 403 and the second filter capacitor 405 are connected; the second filter resistor 404 is connected to the third filter capacitor 406; the filter switch 401, the filter first resistor 402, the filter first polar capacitor 403, the filter second polar capacitor 405, the filter second resistor 404 and the filter third capacitor 406 are connected in parallel; the output ends of the first rectifying circuit 2 and the second rectifying circuit 3 are respectively connected with a filter switch 401 and a filter second polar capacitor 405; wherein the two-way relay 5 comprises a relay interface 501 and a two-way switch 502; the input end of the relay interface 501 is connected in series and then connected in parallel with the second filtering resistor 404 and the third filtering capacitor 406; the output end of the relay interface 501 is connected with the two-way switch 502 and controls the opening and closing of the two-way switch; the two-way full-bridge circuit 6 includes a full-bridge first resistor 601, a full-bridge first capacitor 602, a full-bridge second capacitor 603, a full-bridge second resistor 604, a full-bridge first fet 605, a full-bridge second fet 606, a full-bridge third fet 607, a full-bridge fourth fet 608, a full-bridge third resistor 609, a full-bridge fourth resistor 610, a full-bridge fifth resistor 611, a full-bridge sixth resistor 612, a driving module 613, a full-bridge seventh resistor 614, a full-bridge third capacitor 615, a full-bridge fourth capacitor 616, a full-bridge eighth resistor 617, and a full-bridge interface 618; the full-bridge first resistor 601, the full-bridge first capacitor 602, the full-bridge second capacitor 603, the full-bridge second resistor 604, the full-bridge first field effect transistor 605 and the full-bridge fourth field effect transistor 608 are connected in series; the full-bridge second field effect transistor 606, the full-bridge third field effect transistor 607, the full-bridge seventh resistor 614, the full-bridge third capacitor 615, the full-bridge fourth capacitor 616 and the full-bridge eighth resistor 617 are connected in series; the full-bridge first FET 605 is connected with a full-bridge third resistor 609; the full-bridge fourth fet 608 is connected to the full-bridge sixth resistor 612; the full-bridge second FET 606 is connected with a full-bridge fourth resistor 610; the full-bridge third field effect transistor 607 is connected with a full-bridge fifth resistor 611; the full-bridge third resistor 609, the full-bridge fourth resistor 610, the full-bridge fifth resistor 611 and the full-bridge sixth resistor 612 are all connected with the driving module 613; the driving module 613 is further connected between the full-bridge first capacitor 602 and the full-bridge second capacitor 603, and between the full-bridge third capacitor 615 and the full-bridge fourth capacitor 616; the full bridge interface 618 is connected between the full bridge third capacitance 615 and the full bridge fourth capacitance 616, between the full bridge first capacitance 602 and the full bridge second capacitance 603; the full-bridge interface 618 is connected with the first main transformer 7; the full-bridge first resistor 601 and the full-bridge second resistor 604 are connected with a group of switches of the two-way switch 502; the two-way full-bridge loop 6 also has another set of circuits which are connected with the other set of switches of the two-way switch 502 and the second main transformer 8 in the same way as the connection mode; the voltage detection circuit 9 comprises a detection primary circuit 91, a detection secondary circuit 92, a detection tertiary circuit 93 and a detection quaternary circuit 94; the detection primary circuit 91 comprises a primary optocoupler 901, a primary first resistor 902, a primary polar capacitor 903, a primary second resistor 904, a primary third resistor 905, a primary capacitor 906 and a primary triode 907; one end of the first-stage optical coupler 901 is connected with the first-stage first resistor 902, and the other end is grounded; the other end of the first-stage first resistor 902 is connected with 24V voltage; one end of the primary polar capacitor 903 is grounded, and the other end of the primary polar capacitor 903 is connected to the primary second resistor 904 and is connected between the primary first resistor 902 and the primary optical coupler 901; the first second resistor 904 is connected to the first third resistor 905; the first-stage third resistor 905 is grounded; a primary capacitor 906 is connected to a primary triode 907 and between a primary second resistor 904 and a primary third resistor 905; one output end of the primary triode 907 is grounded, and the other output end is connected with the detection secondary circuit 92; the detection secondary circuit 92 includes a secondary first diode 908, a secondary second diode 909, a secondary capacitor 910, a secondary first resistor 911, a secondary zener diode 912, a secondary field effect transistor 913, a secondary second resistor 914, a secondary third diode 915, a secondary third resistor 916, and a secondary light emitting diode 917; the second-stage first diode 908 is connected with the first-stage triode 907; the second diode 909 is connected with the second capacitor 910 and then connected with the second first resistor 911 in parallel; the second-stage zener diode 912, the second-stage field effect transistor 913 and the second-stage second resistor 914 are connected in series and then connected in parallel with the second-stage first resistor 911; the second stage first diode 908 is connected between the second stage second diode 909 and the second stage capacitor 910; the second third diode 915 is connected in parallel with the second resistor 914; the second third resistor 916 and the second light emitting diode 917 are connected in series and then connected in parallel with the second third diode 915; the second capacitor 910, the second first resistor 911, the second zener diode 912 and the second fet 913 are grounded; the detection three-stage circuit 93 comprises a three-stage optical coupler 918, a three-stage first diode 919, a three-stage second diode 920, a three-stage capacitor 921, a three-stage polar capacitor 922, a three-stage zener diode 923, a three-stage field effect transistor 924, a first three-stage resistor 925, a second three-stage resistor 926 and a three-stage third diode 927; the third-stage field effect transistor 924 is connected with the first-stage resistor 925 and then connected with the second-stage resistor 926 and the third-stage third diode 927 in parallel; the three-stage capacitor 921, the three-stage polar capacitor 922 and the three-stage zener diode 923 are respectively connected with the three-stage third diode 927, the second three-stage resistor 926 and the first three-stage resistor 925 and grounded; the third stage first diode 919 and the third stage second diode 920 are both connected between the third stage third diode 927 and the third stage capacitor 921; the third-stage optical coupler 918 is connected to the third-stage first diode 919 and then grounded; the third-stage second diode 920 is connected to the second-stage first diode 908; wherein the detection four-stage circuit 94 includes a four-stage resistor 928, a four-stage light emitting diode 929, and a four-stage diode 930; the four-stage resistor 928 and the four-stage led 929 are connected in series and then connected in parallel with the first three-stage resistor 925 and the three-stage second diode 920.
The principle of the invention is that the double-circuit full-bridge circuit 6 is connected through the double-circuit relay 5, and the double circuits are in a serial connection mode in a default state so as to avoid high-voltage impact on an original; after the power is on, the voltage detection loop 9 starts to work, and when the access voltage is lower than 270V, the two-way relay 5 enables the two-way switch 501 to be attracted, and the two-loop connection mode is changed into a parallel structure; when the voltage is higher than 270V, the voltage detection loop 9 and the double-circuit relay 5 are not operated, the double loops are kept in a serial state, and the welding machine continuously outputs.
Claims (8)
1. The utility model provides a double-circuit full-bridge inverter circuit suitable for automatic conversion of dual voltage, includes input circuit (1), first rectifier circuit (2), second rectifier circuit (3), filter circuit (4), double-circuit relay (5), double-circuit full-bridge circuit (6), first main transformer (7), second main transformer (8) and voltage detection circuit (9), its characterized in that: the output end of the input circuit (1) is respectively connected with the first rectifying circuit (2) and the second rectifying circuit (3); the first rectifying circuit (2) and the second rectifying circuit (3) are connected with each other and then connected with the filter circuit (4); the filter circuit (4) is connected with the two-way relay (5); the two-way relay (5) is connected with the two-way full-bridge loop (6); the double-path full-bridge loop (6) is respectively connected with the first main transformer (7) and the second main transformer (8); the voltage detection loop (9) is connected with the double-way relay (5); the first rectifying circuit (2) comprises an input first interface (101), an input second interface (102), an input third interface (103), an input fourth interface (104), an input first resistor (105), an input first diode (106), an input fifth interface (107), an input first capacitor (108), an input first light-emitting diode (109), an input second light-emitting diode (110), an input second capacitor (111), an input second diode (112), an input thermistor (113) and an input second resistor (114); all output ports of the first input interface (101) and the fourth input interface (104) are connected in series and then are respectively connected with the fifth input interface (107); the input first resistor (105), the input first diode (106) and the input first light-emitting diode (109) are connected in series and then connected in parallel with the input fifth interface (107); all output ports of the input second interface (102) and the input third interface (103) are connected in series and then connected in series with the input second light emitting diode (110), the input second diode (112) and the input thermistor (113) and then the input second resistor (114); the input first capacitor (108) is connected in parallel with the input first light emitting diode (109) between the input fourth interface (104) and the input first diode (106); the input second capacitor (111) is connected in parallel with the input second light emitting diode (110) between the input second diode (112) and the input third interface (103);
the first rectifying circuit (2) and the second rectifying circuit (3) are bridge rectifying circuits; the first rectifying circuit (2) is connected with the input second interface (102); the second rectifying circuit (3) is connected with the input third interface (103).
2. A two-way full-bridge inverter circuit for dual voltage automatic switching as defined in claim 1, wherein: the filter circuit (4) comprises a filter switch (401), a filter first resistor (402), a filter first polar capacitor (403), a filter second resistor (404), a filter second polar capacitor (405) and a filter third capacitor (406); the first filtering polar capacitor (403) is connected with the second filtering polar capacitor (405); the second filtering resistor (404) is connected with the third filtering capacitor (406); the filter switch (401), the filter first resistor (402), the filter first polar capacitor (403) and the filter second polar capacitor (405), the filter second resistor (404) and the filter third capacitor (406) are connected in parallel; the output ends of the first rectifying circuit (2) and the second rectifying circuit (3) are respectively connected with a filter switch (401) and a filter second polar capacitor (405).
3. A two-way full-bridge inverter circuit for dual voltage automatic switching as defined in claim 1, wherein: the two-way relay (5) comprises a relay interface (501) and a two-way switch (502); the input end of the relay interface (501) is connected in series and then connected in parallel with the filtering second resistor (404) and the filtering third capacitor (406); the output end of the relay interface (501) is connected with the two-way switch (502) and controls the opening and closing of the two-way switch.
4. A two-way full-bridge inverter circuit for dual voltage automatic switching as defined in claim 1, wherein: the double-path full-bridge loop (6) comprises a full-bridge first resistor (601), a full-bridge first capacitor (602), a full-bridge second capacitor (603), a full-bridge second resistor (604), a full-bridge first field effect transistor (605), a full-bridge second field effect transistor (606), a full-bridge third field effect transistor (607), a full-bridge fourth field effect transistor (608), a full-bridge third resistor (609), a full-bridge fourth resistor (610), a full-bridge fifth resistor (611), a full-bridge sixth resistor (612), a driving module (613), a full-bridge seventh resistor (614), a full-bridge third capacitor (615), a full-bridge fourth capacitor (616), a full-bridge eighth resistor (617) and a full-bridge interface (618); the Quan Qiaodi first resistor (601), the full-bridge first capacitor (602), the full-bridge second capacitor (603), the full-bridge second resistor (604), the full-bridge first field effect transistor (605) and the full-bridge fourth field effect transistor (608) are connected in series; the Quan Qiaodi two field effect transistor (606), the full-bridge third field effect transistor (607), the full-bridge seventh resistor (614), the full-bridge third capacitor (615), the full-bridge fourth capacitor (616) and the full-bridge eighth resistor (617) are connected in series; the full-bridge first field effect transistor (605) is connected with a full-bridge third resistor (609); the full-bridge fourth field effect transistor (608) is connected with a full-bridge sixth resistor (612); the Quan Qiaodi two field effect transistor (606) is connected with the full-bridge fourth resistor (610); the Quan Qiaodi three field effect transistor (607) is connected with the full-bridge fifth resistor (611); the Quan Qiaodi three resistor (609), the full-bridge fourth resistor (610), the full-bridge fifth resistor (611) and the full-bridge sixth resistor (612) are all connected with the driving module (613); the driving module (613) is further connected between the full-bridge first capacitor (602) and the full-bridge second capacitor (603), and between the full-bridge third capacitor (615) and the full-bridge fourth capacitor (616); the full-bridge interface (618) is connected between the full-bridge third capacitor (615) and the full-bridge fourth capacitor (616), and between the full-bridge first capacitor (602) and the full-bridge second capacitor (603); the full-bridge interface (618) is connected with the first main transformer (7); the Quan Qiaodi one resistor (601) and the full-bridge second resistor (604) are connected with a group of switches of the two-way switch (502); the two-way full-bridge loop (6) is also provided with another group of circuits which are completely the same as the connection mode, and the circuits are connected with the other group of switches of the two-way switch (502) and the second main transformer (8).
5. A two-way full-bridge inverter circuit for dual voltage automatic switching as defined in claim 1, wherein: the voltage detection circuit (9) comprises a detection primary circuit (91), a detection secondary circuit (92), a detection tertiary circuit (93) and a detection quaternary circuit (94); the detection primary circuit (91) comprises a primary optical coupler (901), a primary first resistor (902), a primary polar capacitor (903), a primary second resistor (904), a primary third resistor (905), a primary capacitor (906) and a primary triode (907); one end of the first-stage optical coupler (901) is connected with the first-stage first resistor (902), and the other end of the first-stage optical coupler is grounded; the other end of the first resistor (902) is connected with a voltage (24) V; one end of the first-stage polar capacitor (903) is grounded, and the other end of the first-stage polar capacitor is connected to the first-stage second resistor (904) and is connected between the first-stage first resistor (902) and the first-stage optical coupler (901); the first-stage second resistor (904) is connected with a first-stage third resistor (905); the first-stage third resistor (905) is grounded; the primary capacitor (906) is connected to the primary triode (907) and is connected between the primary second resistor (904) and the primary third resistor (905); one output end of the primary triode (907) is grounded, and the other output end of the primary triode is connected with the detection secondary circuit (92).
6. The two-way full-bridge inverter circuit suitable for dual-voltage automatic conversion as claimed in claim 5, wherein: the detection secondary circuit (92) comprises a secondary first diode (908), a secondary second diode (909), a secondary capacitor (910), a secondary first resistor (911), a secondary zener diode (912), a secondary field effect transistor (913), a secondary second resistor (914), a secondary third diode (915), a secondary third resistor (916) and a secondary light emitting diode (917); the second-stage first diode (908) is connected with a first-stage triode (907); the second diode (909) is connected with the second capacitor (910) and then connected with the second first resistor (911) in parallel; the secondary zener diode (912), the secondary field effect transistor (913) and the secondary second resistor (914) are connected in series and then connected in parallel with the secondary first resistor (911); the second-stage first diode (908) is connected between the second-stage second diode (909) and the second-stage capacitor (910); the second third diode (915) is connected in parallel with the second resistor (914); the second-stage third resistor (916) and the second-stage light-emitting diode (917) are connected in series and then connected in parallel with the second-stage third diode (915); the secondary capacitor (910), the secondary first resistor (911), the secondary zener diode (912) and the secondary field effect transistor (913) are grounded.
7. The two-way full-bridge inverter circuit suitable for dual-voltage automatic conversion as claimed in claim 5, wherein: the detection three-stage circuit (93) comprises a three-stage optical coupler (918), a three-stage first diode (919), a three-stage second diode (920), a three-stage capacitor (921), a three-stage polar capacitor (922), a three-stage zener diode (923), a three-stage field effect transistor (924), a first three-stage resistor (925), a second three-stage resistor (926) and a three-stage third diode (927); the third-stage field effect transistor (924) is connected with the first-stage resistor (925) and then connected with the second-stage resistor (926) and the third-stage third diode (927) in parallel; the three-stage capacitor (921), the three-stage polar capacitor (922) and the three-stage voltage stabilizing diode (923) are respectively connected with the three-stage third diode (927), the second three-stage resistor (926) and the first three-stage resistor (925) and grounded; the third-stage first diode (919) and the third-stage second diode (920) are both connected between the third-stage third diode (927) and the third-stage capacitor (921); the three-stage optical coupler (918) is connected with a three-stage first diode (919) and then grounded; the third-stage second diode (920) is connected to the second-stage first diode (908).
8. The two-way full-bridge inverter circuit suitable for dual-voltage automatic conversion as claimed in claim 5, wherein: the detection four-stage circuit (94) comprises a four-stage resistor (928), a four-stage light emitting diode (929) and a four-stage diode (930); the four-stage resistor (928) and the four-stage light emitting diode (929) are connected in series and then connected in parallel with the first three-stage resistor (925) and the three-stage second diode (920).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552084.3A CN107317505B (en) | 2017-07-07 | 2017-07-07 | Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710552084.3A CN107317505B (en) | 2017-07-07 | 2017-07-07 | Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107317505A CN107317505A (en) | 2017-11-03 |
| CN107317505B true CN107317505B (en) | 2023-10-27 |
Family
ID=60178296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710552084.3A Active CN107317505B (en) | 2017-07-07 | 2017-07-07 | Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107317505B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109768710A (en) * | 2019-01-16 | 2019-05-17 | 扬州大学 | Bi-directional DC-DC circuit topological structure and control method in bidirectional charger |
| CN111014889A (en) * | 2019-12-25 | 2020-04-17 | 浙江颐顿机电有限公司 | Single-phase full-network-communication inverter welding machine circuit |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622035A (en) * | 2012-03-21 | 2012-08-01 | 昆兰新能源技术常州有限公司 | Maximum power point tracking control method for photovoltaic inverter |
| CN203426573U (en) * | 2013-08-28 | 2014-02-12 | 上海熔易焊接机制造有限公司 | Main loop of inverter pulse variable polarity TIG welding power source |
| CN204291538U (en) * | 2014-12-02 | 2015-04-22 | 深圳市电王科技有限公司 | A kind of warm start uviol lamp electric ballast |
| CN104767395A (en) * | 2015-04-30 | 2015-07-08 | 山东航宇吉力电子有限公司 | Three-phase and single-phase output circuit of variable-frequency power source |
| CN106141376A (en) * | 2016-08-24 | 2016-11-23 | 台州林轩科技有限公司 | The industrial frequency rectifying filtering circuitry of twin voltage inverter arc welding machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7466565B2 (en) * | 2005-06-30 | 2008-12-16 | Tdk Corporation | Switching power supply unit and voltage detection circuit |
-
2017
- 2017-07-07 CN CN201710552084.3A patent/CN107317505B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102622035A (en) * | 2012-03-21 | 2012-08-01 | 昆兰新能源技术常州有限公司 | Maximum power point tracking control method for photovoltaic inverter |
| CN203426573U (en) * | 2013-08-28 | 2014-02-12 | 上海熔易焊接机制造有限公司 | Main loop of inverter pulse variable polarity TIG welding power source |
| CN204291538U (en) * | 2014-12-02 | 2015-04-22 | 深圳市电王科技有限公司 | A kind of warm start uviol lamp electric ballast |
| CN104767395A (en) * | 2015-04-30 | 2015-07-08 | 山东航宇吉力电子有限公司 | Three-phase and single-phase output circuit of variable-frequency power source |
| CN106141376A (en) * | 2016-08-24 | 2016-11-23 | 台州林轩科技有限公司 | The industrial frequency rectifying filtering circuitry of twin voltage inverter arc welding machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107317505A (en) | 2017-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203933406U (en) | A kind of high input voltage auxiliary power circuit | |
| CN107317505B (en) | Be suitable for double-circuit full-bridge inverter circuit of two voltage automatic switching | |
| CN103051197A (en) | Primary-side-control based control circuit structure for flyback switching power supply | |
| CN104038072A (en) | High-voltage input auxiliary power circuit | |
| CN103973084B (en) | A kind of for series resonance IGBT Driving Circuit | |
| CN103929855A (en) | LED lighting device, LED driving circuit and switch power source driving chip of LED driving circuit | |
| CN215067021U (en) | Automatic test system of power frequency noise immunity | |
| CN204190634U (en) | A kind of single supply multiple-output electric power circuit | |
| CN104092383A (en) | High-voltage input auxiliary power supply circuit and working method thereof | |
| CN104113217A (en) | Parallel power supply system for fault detection and power supply modules thereof | |
| CN201940741U (en) | Vehicle shape repairing machine capable of automatic switching between 220V-380V voltage | |
| CN103165082B (en) | Double circuit light-emitting diode (LED) drive circuit and display device | |
| CN202050580U (en) | Multi-tube driving system | |
| CN205792257U (en) | Backlight drive circuit and television set | |
| CN101765287A (en) | Fluorescent lamp control circuit and fluorescent lamp thereof | |
| CN104053288B (en) | The non-isolated voltage-dropping type LED drive circuit of adaptation power supply | |
| CN105792474A (en) | Wide-voltage AC drive circuit for LED power supply | |
| CN209030069U (en) | A kind of multiple-output electric power | |
| CN103796373A (en) | Light-emitting diode illumination system with clamping device | |
| CN102723771A (en) | Power supply automatic switching circuit for double-power-supply LED (Light-Emitting Diode) street lamp | |
| CN201893958U (en) | Energy recovery system driven by multiple parallel light-emitting diodes (LEDs) | |
| CN202889723U (en) | LED primary constant current power supply output current adjusting control circuit | |
| CN106787654B (en) | Circuit structure for switching power supply to rapidly shut off output voltage after alternating current power failure | |
| CN104797061A (en) | LED lighting circuit with double-power-supply drive | |
| CN205430046U (en) | Switching power supply circuit with backup battery power supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |