CN201219244Y - Industrial frequency single-phase inverter apparatus - Google Patents
Industrial frequency single-phase inverter apparatus Download PDFInfo
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- CN201219244Y CN201219244Y CNU200820081175XU CN200820081175U CN201219244Y CN 201219244 Y CN201219244 Y CN 201219244Y CN U200820081175X U CNU200820081175X U CN U200820081175XU CN 200820081175 U CN200820081175 U CN 200820081175U CN 201219244 Y CN201219244 Y CN 201219244Y
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- 239000003990 capacitor Substances 0.000 claims abstract description 15
- 238000003466 welding Methods 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 13
- 230000001681 protective effect Effects 0.000 claims description 11
- 238000001914 filtration Methods 0.000 claims description 8
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000010355 oscillation Effects 0.000 claims description 3
- 230000005669 field effect Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The utility model provides a industrial frequency single-phase inverting power source apparatus, which is characterized in that it is composed of an inverter main circuit (3), a drive circuit (2), a waveform generator (1), a protection circuit (4) and a power supply ( 5), wherein, the inverter main circuit (3) is constituted by a rectifier filter circuit, a quick-break fuse, capacitors, resistors, inductors, loads and an inverter; the drive circuit (2) is constituted by a transformer, a bridge rectifier circuit, three-terminal voltage regulator power supply circuit, and a high-speed photoelectric coupler; the waveform generator (1) is constituted by a pulse generation integrate circuit and an external RC circuit; and the protection circuit (4) is constituted by diodes, transistors, capacitors, resistors and an operational amplifier. Under the precondition that the structure of the intermediate frequency passive welder is not changed, the power source apparatus can output 220V50H [Z] industrial frequency single-phase power. The power source apparatus has functions of a strong anti-electromagnetic interference, a strong load capacity, over-current quick-break and overheat quick-cutting-off of the inverting bridge, and under-voltage protection of the system, so that the power source apparatus can be applied to direct starting and shutdown of the field operation apparatus. At the same time, the power source apparatus also advantages of small size, light weight, easy operation and so on.
Description
Technical field
The utility model relates to a kind of power frequency single-phase inversion supply unit, especially a kind of device that can allow the inversion of intermediate frequency passive electrical welding machine export 220V, 50HZ power frequency single phase poaer supply.
Background technology
Intermediate frequency passive electrical welding machine is a kind ofly to can't help common frequency power network power supply and the electric welding machine of power supply is provided by the built-in intermediate frequency gasoline engine generator of its this machine, and built-in generator electricity can be 500 ~ 1000HZ medium frequency alternating current, be widely used in the field construction of oil, gas, water or other fluid conveyance conduit, have advantages such as volume is little, in light weight, easy to use.
In addition, in the construction operation, a large amount of implements all needs to use the power frequency supply of 220V 50HZ in the open air, as: (1) is discharged institute's ditching, when cheating interior ponding, is needed provide to slush pump the power frequency supply of 220V 50HZ with slush pump; (2) the on-the-spot various detecting instruments that use, computer, cell-phone charging etc. also need the power frequency supply of 220V 50Hz.This just brings problems and inconvenience to field work.Therefore, many Subscriber Units wish to be provided by intermediate frequency passive electrical welding machine the power frequency supply of 220V 50HZ, for the normal use of job site equipment needed thereby.
Requirement at above-mentioned user, there is minority electric welding machine factory to adopt the method that on former unit, increases a 2KW power frequency generator to solve this problem at present, but because the output frequency of power frequency generator has only 50HZ, therefore volume is bigger, so just make the volume and weight of electric welding machine will increase about 30% on the original basis, bring very big difficulty and inconvenient for open-air transportation, thereby it is little to have offset intermediate frequency electric welding machine volume, lightweight advantage.So many users clearly represent to accept this scheme, and wish and can address this problem under the situation that does not increase original volume weight, but also do not have this series products at home at present.
Summary of the invention
For overcoming the prior art above shortcomings, the utility model provides a kind of power frequency single-phase inversion supply unit, can allow the inversion of intermediate frequency passive electrical welding machine export 220V 50HZ power frequency single phase poaer supply by this device, and not change the volume and weight of original intermediate frequency passive electrical welding machine equipment.
The utility model is finished by following technical proposal: a kind of power frequency single-phase inversion supply unit; it is characterized in that: it is by inversion major loop (3); drive circuit (2); waveform generator (1); protective circuit (4) and power supply (5) are formed; wherein: the input of inversion major loop (3) and intermediate frequency generator 220V; the three-phase output end of 500HZ winding links to each other; output is connected with load motor; the signal output part of waveform generator (1) links to each other with the signal input part of drive circuit (2) simultaneously; the input of protective circuit (4) and overcurrent protection transducer; the signal output part of the transducer of overtemperature protection transducer and under-voltage protection links to each other, and the output of protective circuit (4) blocks end with the pulse output of waveform generator (1) and links to each other.
Described inversion major loop (3) is made up of current rectifying and wave filtering circuit, fast acting fuse, electric capacity, resistance, inductance, load and inverter bridge, wherein, three-phase output end A, the B of intermediate frequency generator 220V, 500HZ winding, C link to each other with rectifier circuit Z, and the direct voltage that makes the output voltage of winding form 250V behind rectifying and wave-filtering adds to the inverter bridge circuit; Dc power anode links to each other with the collector electrode of insulated gate bipolar transistor (being the IGBT pipe) V1, V3 by fast acting fuse FS, negative pole links to each other by the emitter that current-limiting resistance R0 and IGBT manage V2, V4, load motor D is in parallel with capacitance-resistance RC after inductance coil L2, collector electrode with IGBT pipe V1, V3 emitter, IGBT pipe V2, V4 links to each other respectively, and IGBT pipe V1, V2, grid Vg1, the Vg2 of V3, V4, Vg3, Vg4 link to each other with output V1, V2, V3, the V4 of drive circuit (2) respectively.Take turns conducting work in the diagonal angle in twos by four IGBT pipe V1, V2, V3, V4 in the inverter bridge, thereby with the inversion of 250V direct voltage be supply load work behind the symmetrical square wave of power frequency ac voltage 220V 50HZ.
Described drive circuit (2) is made up of transformer, bridge rectifier, three terminal regulator power circuit, high-speed photoelectric coupler, and wherein transformer T elementary connects the output of the additional winding of electric welding machine 24V, secondary respectively with bridge rectifier VQ
1, VQ
2, VQ
3Input links to each other, bridge rectifier VQ
1, VQ
2, VQ
3Output passes through capacitor C respectively
401, C
404, C
407, C
402, C
405, C
408, integrated regulator IC202, IC203, IC204 link to each other with high-speed photoelectric coupler IC301, IC302, IC303, IC304,2 pin of high-speed photoelectric coupler IC301, IC304 link to each other with IC101 output 11 pin of waveform generator (1), 2 pin of IC302, IC303 link to each other with IC101 output 14 pin of waveform generator (1), 3 pin of IC301, IC302, IC303, IC304 all interconnect, and 7 pin, 8 pin link to each other with IGBT pipe V1, V3, grid Vg1, the Vg3 of V2, V4, Vg2, Vg4 in the inversion major loop (3) respectively.
Described waveform generator (1) is made up of integrated circuit (IC) 101 and peripheral RC auxiliary circuit, and wherein 16 pin of IC101 directly link to each other with 2 pin, and 4 pin meet C
103, R
101Form anti-jamming circuit, 6 pin and oscillation resistance R
W101Join 5 pin and oscillating capacitance C
101Link to each other, 7 pin pass through R
102With capacitor C
101Link to each other, 10 pin pass through resistance R
107Ground connection.
Described protective circuit (4) is by diode, triode, electric capacity, resistance, operational amplifier is formed, wherein, the collector electrode of triode V301 links to each other with 10 pin of IC101 in the waveform generator, grounded emitter, base stage and resistance R 303, the common node of R302 links to each other, resistance R 304 1 ends link to each other with positive source, the other end is respectively through light-emitting diode VL301, resistance R 303, R302 ground connection, this end is through the collector electrode of diode VD301 and triode V302,2 pin of indicator light connector CZ302 link to each other, also link to each other with triode V303 collector electrode simultaneously by resistance R 305, the base stage of triode V302 is through resistance R 307, R308 links to each other with the collector electrode of triode V304, this base stage is also through resistance R 306 simultaneously, reset switch connector CZ303 ground connection, grounded emitter, the base stage of the emitter of triode V303 and triode V304, the emitter of triode V305 links to each other, triode V305 collector electrode one tunnel is through light-emitting diode VL304, resistance R 314 links to each other with output 7 pin of operational amplifier IC104B, another road is through light-emitting diode VL302, resistance R 311 links to each other with output 1 pin of operational amplifier IC104A, one the tunnel through light-emitting diode VL303 again, resistance R 312, temperature relay contact connector CZ304 links to each other with ground, in-phase input end 3 pin of operational amplifier IC104A connect positive source through resistance R 310, this 3 pin is again through resistance R 502, potentiometer RW102, capacitor C 303 ground connection, inverting input 2 pin of IC104A link to each other with sample resistance R04, simultaneously through capacitor C 304 ground connection; Inverting input 6 pin of operational amplifier IC104B connect positive source through resistance R 315, simultaneously through resistance R 503, potentiometer RW103, capacitor C 305 ground connection, in-phase input end 5 pin of IC104B link to each other with inversion major loop DC power supply connector CZ2 through resistance R 05, simultaneously through resistance R 06, capacitor C 02 ground connection.
The utility model compared with prior art has following advantage and effect: adopt such scheme, can directly export 220V 50HZ power frequency single phase poaer supply under the prerequisite that does not change intermediate frequency passive electrical machine structure.This power supply has that anti-strong electromagnetic, carrying load ability are strong, the under-voltage protection function of inverter bridge instantaneous over-current, overheated quick-break and system, can satisfy the direct startup and the shutoff of camp equipment.Also have advantages such as volume is little, in light weight, easy to use simultaneously.
Description of drawings
Fig. 1 is a system architecture diagram;
Fig. 2 is inversion main loop circuit figure;
Fig. 3 is the waveform generator circuit diagram;
Fig. 4 is the drive circuit schematic diagram;
Fig. 5 is the protective circuit schematic diagram.
Embodiment
The example that provides below in conjunction with accompanying drawing is described further the utility model, is not limited thereto but hold within the utility model.
Intermediate frequency passive electrical welding machine output 220V provided by the utility model, 50HZ power frequency single-phase inversion power supply; it by inversion major loop (3), drive circuit (2), waveform generator (1), protective circuit (4) and power supply (5) totally five element circuits form, as Fig. 1.
In the described inversion major loop, A, B, C is intermediate frequency generator 220V, the three-phase output end of 500HZ winding, the output voltage of this winding forms 250V behind rectifying and wave-filtering direct voltage adds to the inverter bridge circuit, wherein, dc power anode is by fast acting fuse FS and IGBT pipe V1, the collector electrode of V3 links to each other, negative pole is by current-limiting resistance R0 and IGBT pipe V2, the emitter of V4 links to each other, load motor D is in parallel with capacitance-resistance RC after inductance coil L2, respectively with IGBT pipe V1, the V3 emitter, V2, the collector electrode of V4 links to each other, V1, V2, V3, the grid Vg1 of V4, Vg2, Vg3, Vg4 respectively with the V1 of drive circuit (Fig. 5), V2, V3, the output of V4 links to each other.Four IGBT pipe V1, V2, V3, V4 take turns conducting work in the diagonal angle in twos in the inverter bridge, thereby are supply load work behind the symmetrical square wave of industrial frequency AC 220V 50HZ with the inversion of 250V direct voltage, as Fig. 2.
Described drive circuit is made up of transformer T, three tunnel independent direct current stabilized voltage power supplys and four high-speed photoelectric coupler IC301, IC302, IC303, IC304.The elementary output that connects the additional winding of electric welding machine 24V of described transformer T, the secondary AC power of exporting three road 24V respectively is through VQ
1, VQ
2, VQ
3Rectification is a 28V direct current and through capacitor C
401, C
404, C
407, C
402, C
405, C
408After the filtering, exporting three road stable 18V direct currents by three integrated regulator IC202, IC203, IC204 is four high-speed photoelectric coupler IC301, IC302, IC303, IC304 power supply.2 pin of IC301, IC304 link to each other with waveform generator (1) IC101 output 11 pin, 2 pin of IC302, IC303 link to each other with waveform generator (1) IC101 output 14 pin, 3 pin of IC301, IC302, IC303, IC304 all interconnect, 7 pin, 8 pin link to each other with IGBT pipe V1, V3, grid Vg1, the Vg3 of V2, V4, Vg2, Vg4 in the inversion major loop (Fig. 2) respectively, provide the inversion drive signal to inverter bridge, as Fig. 4.
Described waveform generator is made up of integrated circuit (IC) 101 and peripheral auxiliary circuits, C
104, C
105, R
103Be decoupling circuit, 16 pin of IC101 directly link to each other with 2 pin, and 4 pin meet C
103, R
101Form anti-jamming circuit, oscillation resistance R
W101The 6th pin of one termination IC101, an end ground connection, R
W101Span be 0 Europe to 50K Europe, the oscillating capacitance C of the 5th pin
101Resistance R discharge time
102Decision; Dead band voltage between the inverter bridge leg is by adjusting R simultaneously
102Resistance finish; C
101Span for 0.001u F to 0.1u F, get C among the design
101=0.47 μ, the 10th pin is by the 10K resistance R
107Ground connection is as Fig. 3.
Described protective circuit is made up of current foldback circuit, under-voltage protecting circuit, thermal protection circuit, and wherein: current foldback circuit is made up of IC104A and peripheral cell, and wherein the ohmically voltage of overcurrent sample is imported resistance R by 2 pin
310, R
W102Formed the flow valuve initialization circuit, when the voltage on the overcurrent sample resistance surpasses set point, the 1 pin output low level of IC104A, make it enter conducting state thereby trigger the bistable circuit forms by V304, V303, V302, V302 conducting V301 by, the SD end of the integrated circuit (IC) 101 in the waveform generator (Fig. 4) is a high level, the control impuls of input inverter bridge IGBT pipe is blocked, inverter output voltage is zero, and motor quits work, and sends warning simultaneously.After the current foldback circuit action, can make system restoration work by reset button; Under-voltage protecting circuit is made up of IC104B and peripheral cell, wherein R
05, R
06Form bleeder circuit the 240V voltage of importing is carried out dividing potential drop, get R
06The voltage of being got is as the homophase input voltage as IC104B, in like manner R
315, R
W103Also form bleeder circuit, get R
W103The voltage of getting is as the reverse inter-input-ing voltage of IC104B, when the voltage of IC104B the 5th pin is lower than set point, the bistable circuit that the 1 pin output low level of IC104B and triggering are made up of V304, V303, V302 makes it enter conducting state, V302 conducting V301 by, the SD end of the integrated circuit (IC) 101 in the waveform generator (1) is high level, and the control impuls of input inverter bridge IGBT pipe is blocked, and inverter output voltage is zero, motor quits work, and sends warning simultaneously.After the under-voltage protecting circuit action, can make system restoration work by reset button; Overheating protection circuit is on the radiator of inverter bridge IGBT pipe temperature relay to be installed; its operating temperature is set at 85 ℃; temperature relay closure when the temperature of field effect pipe surpasses 85 ℃; at this moment; the contact of temperature relay is with two port short circuits of CZ304; the bistable circuit that causes V304, V303, V302 to form enters conducting state; thereby make the SD end of the integrated circuit (IC) 101 in the waveform generator (Fig. 4) be high level; the control impuls of input inverter bridge IGBT pipe is blocked; inversion is output as zero, and motor quits work.When treating that IGBT pipe temperature drops under the set-point, temperature relay disconnects, and presses reset button and can make system restoration work, as Fig. 5.
The course of work of this inverter is:
1. after intermediate frequency passive electrical welding machine started, the output voltage of its A, B, C three phase windings forms 250V behind rectifying and wave-filtering direct voltage added to the inverter bridge circuit.
2. the additional winding 24V voltage of this welding machine provides DC component behind transformer T, rectification, filtering and three-terminal voltage-stabilizing, for relevant DC circuit work.
3. at first produce pulse signal by the integrated circuit (IC) in the wave generator circuit 101, deliver to the 2 pin inputs of drive circuit high-speed photoelectric coupler IC301, IC304 and IC302, IC303 respectively by its 11 pin, 14 pin, its four output drive signals are respectively by 7 pin, the output of 8 pin, deliver to the grid of four IGBT pipes in the inversion major loop inverter bridge, make its alternation, thereby with the inversion of 250V direct voltage is 220V 50HZ power frequency ac voltage, uses for power frequency equipment.
Claims (5)
1, a kind of power frequency single-phase inversion supply unit; it is characterized in that: it is made up of inversion major loop (3), drive circuit (2), waveform generator (1), protective circuit (4) and power supply (5), wherein: the input of inversion major loop (3) and intermediate frequency generator 220V, 500H
ZThe three-phase output end of winding links to each other; output is connected with load motor; the signal output part of waveform generator (1) links to each other with the signal input part of drive circuit (2) simultaneously; the input of protective circuit (4) links to each other with the signal output part of the transducer of overcurrent protection transducer, overtemperature protection transducer and under-voltage protection, and the output of protective circuit (4) blocks end with the pulse output of waveform generator (1) and links to each other.
2, power frequency single-phase inversion supply unit according to claim 1 is characterized in that described inversion major loop (3) is made up of current rectifying and wave filtering circuit, fast acting fuse, electric capacity, resistance, inductance, load and inverter bridge, wherein, and intermediate frequency generator 220V, 500H
ZThree-phase output end A, the B of winding, C link to each other with inverter bridge circuit Z, and the direct voltage that makes the output voltage of winding form 250V behind rectifying and wave-filtering adds to the inverter bridge circuit; Dc power anode links to each other by the collector electrode that fast acting fuse FS and IGBT manage V1, V3, negative pole links to each other by the emitter that current-limiting resistance R0 and IGBT manage V2, V4, load motor D is in parallel with capacitance-resistance RC after inductance coil L2, collector electrode with IGBT pipe V1, V3 emitter, V2, V4 links to each other respectively, and grid Vg1, the Vg2 of V1, V2, V3, V4, Vg3, Vg4 link to each other with output V1, V2, V3, the V4 of drive circuit (2) respectively.
3, power frequency single-phase inversion supply unit according to claim 1, it is characterized in that described drive circuit (2) is made up of transformer, bridge rectifier, three terminal regulator power circuit, high-speed photoelectric coupler, wherein transformer T elementary connects the output of the additional winding of electric welding machine 24V, secondary respectively with bridge rectifier VQ
1, VQ
2, VQ
3Input links to each other, bridge rectifier VQ
1, VQ
2, VQ
3Output passes through capacitor C respectively
401, C
404, C
407, C
402, C
405, C
408, integrated regulator IC202, IC203, IC204 link to each other with high-speed photoelectric coupler IC301, IC302, IC303, IC304,2 pin of high-speed photoelectric coupler IC301, IC304 link to each other with IC101 output 11 pin of waveform generator (1), 2 pin of IC302, IC303 link to each other with IC101 output 14 pin of waveform generator (1), 3 pin of IC301, IC302, IC303, IC304 all interconnect, and 7 pin, 8 pin link to each other with field effect transistor V1, V3, grid Vg1, the Vg3 of V2, V4, Vg2, Vg4 in the inversion major loop (3) respectively.
4, power frequency single-phase inversion supply unit according to claim 1 is characterized in that described waveform generator (1) is made up of integrated circuit (IC) 101 and peripheral RC auxiliary circuit, and wherein 16 pin of IC101 directly link to each other with 2 pin, and 4 pin meet C
103, R
101Form anti-jamming circuit, 6 pin and oscillation resistance R
W101Join 5 pin and oscillating capacitance C
101Link to each other, 7 pin pass through R
102With capacitor C
101Link to each other, 10 pin pass through resistance R
107Ground connection.
5, power frequency single-phase inversion supply unit according to claim 1, it is characterized in that described protective circuit (4) is by diode, triode, electric capacity, resistance, operational amplifier is formed, wherein, the collector electrode of triode V301 links to each other with 10 pin of IC101 in the waveform generator, grounded emitter, base stage and resistance R 303, the common node of R302 links to each other, resistance R 304 1 ends link to each other with positive source, the other end is respectively through light-emitting diode VL301, resistance R 303, R302 ground connection, this end is through the collector electrode of diode VD301 and triode V302,2 pin of indicator light connector CZ302 link to each other, also link to each other with triode V303 collector electrode simultaneously by resistance R 305, the base stage of triode V302 is through resistance R 307, R308 links to each other with the collector electrode of triode V304, this base stage is also through resistance R 306 simultaneously, reset switch connector CZ303 ground connection, grounded emitter, the base stage of the emitter of triode V303 and triode V304, the emitter of triode V305 links to each other, triode V305 collector electrode one tunnel is through light-emitting diode VL304, resistance R 314 links to each other with output 7 pin of operational amplifier IC104B, another road is through light-emitting diode VL302, resistance R 311 links to each other with output 1 pin of operational amplifier IC104A, one the tunnel through light-emitting diode VL303 again, resistance R 312, temperature relay contact connector CZ304 links to each other with ground, in-phase input end 3 pin of operational amplifier IC104A connect positive source through resistance R 310, this 3 pin is again through resistance R 502, potentiometer RW102, capacitor C 303 ground connection, inverting input 2 pin of IC104A link to each other with sample resistance R04, simultaneously through capacitor C 304 ground connection; Inverting input 6 pin of operational amplifier IC104B connect positive source through resistance R 315, simultaneously through resistance R 503, potentiometer RW103, capacitor C 305 ground connection, in-phase input end 5 pin of IC104B link to each other with inversion major loop DC power supply connector CZ2 through resistance R 05, simultaneously through resistance R 06, capacitor C 02 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820081175XU CN201219244Y (en) | 2008-05-09 | 2008-05-09 | Industrial frequency single-phase inverter apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820081175XU CN201219244Y (en) | 2008-05-09 | 2008-05-09 | Industrial frequency single-phase inverter apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201219244Y true CN201219244Y (en) | 2009-04-08 |
Family
ID=40542078
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820081175XU Expired - Fee Related CN201219244Y (en) | 2008-05-09 | 2008-05-09 | Industrial frequency single-phase inverter apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201219244Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215005A (en) * | 2010-04-07 | 2011-10-12 | 苏州风云电源有限公司 | Inverter |
| CN106932665A (en) * | 2015-12-31 | 2017-07-07 | 联合汽车电子有限公司 | New-energy automobile three-phase inverter test system |
-
2008
- 2008-05-09 CN CNU200820081175XU patent/CN201219244Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102215005A (en) * | 2010-04-07 | 2011-10-12 | 苏州风云电源有限公司 | Inverter |
| CN106932665A (en) * | 2015-12-31 | 2017-07-07 | 联合汽车电子有限公司 | New-energy automobile three-phase inverter test system |
| CN106932665B (en) * | 2015-12-31 | 2020-04-07 | 联合汽车电子有限公司 | New energy automobile three-phase inverter test system |
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Granted publication date: 20090408 Termination date: 20110509 |