CN108306531A - A kind of inverter - Google Patents
A kind of inverter Download PDFInfo
- Publication number
- CN108306531A CN108306531A CN201711483841.2A CN201711483841A CN108306531A CN 108306531 A CN108306531 A CN 108306531A CN 201711483841 A CN201711483841 A CN 201711483841A CN 108306531 A CN108306531 A CN 108306531A
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- Prior art keywords
- inverter
- diode
- resistance
- pins
- pulse width
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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
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1222—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the input circuit, e.g. transients in the DC input
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
- H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
- H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters
- H02H7/1227—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters responsive to abnormalities in the output circuit, e.g. short circuit
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of inverters; including the first inverter, straightening and filtering unit and the second inverter being sequentially connected; input direct-current voltage obtains 220V alternating currents after the first inverter; the rectified filter of this alternating current obtains high voltage direct current; then 220V alternating currents are obtained through the second inverter; the input terminal of first inverter is connected separately with protection circuit against input over-voltage and overheating protection circuit, and the input terminal of the second inverter is connected with output overvoltage protection circuit.Invention can control the output voltage of power supply; when input voltage occurs excessive or too small; protection circuit against input over-voltage starts immediately; stop the work of the first inverter; when circuit operating temperature is excessively high, starting overheating protection circuit makes the first inverter be stopped, and output overvoltage protection circuit and the second inverter constitute backfeed loop; stop the work of the second inverter when circuit output exception, ensures that equipment safety is reliably run.
Description
Technical field
The present invention relates to field of switch power more particularly to a kind of inverters.
Background technology
The one kind of inverter as Switching Power Supply, can be according to the output voltage stabilizing or stabilized current characteristic that load proposes power supply
Requirement, switching circuit is controlled using the control method of duty ratio using feedback control circuit, have it is efficient and
The light advantage of volume is widely used in various rectification loads, but is not fine for the adaptation of the load of transformer, has larger
Noise, and cannot be acted in time when circuit digital display failure, to be damaged to circuit and equipment.
Invention content
The purpose of the present invention is to provide a kind of inverters, can control the output voltage of power supply, and can
It is stopped in time in device fails, ensures that equipment safety is reliably run.
To achieve the above object, the present invention adopts the following technical scheme that：
A kind of inverter, including the first inverter, straightening and filtering unit and the second inverter that are sequentially connected, input are straight
Galvanic electricity pressure obtains 220V alternating currents after the first inverter, and the rectified filter of this alternating current obtains high voltage direct current, so
220V alternating currents are obtained by the second inverter, the input terminal of the first inverter is connected separately with protection circuit against input over-voltage
And overheating protection circuit, the input terminal of the second inverter are connected with output overvoltage protection circuit.
Preferably, first inverter uses the first pulse width modulator, the second inverter to use the second pulsewidth tune
Device processed.
Preferably, the straightening and filtering unit includes first switch pipe, second switch pipe, transformer and bridge rectifier electricity
The grid on road, first switch pipe is connected through the first diode with 10 pins of the first pulse width modulator, the first pulse width modulator
10 pins are also grounded through first resistor, and the grid of switching tube is connected with the emitter of the first triode, the base stage of the first triode
It is connected with 10 pins of the first pulse width modulator, the grounded collector of the first triode, the source electrode ground connection of the first switch pipe,
The drain electrode of first switch pipe connects positive pole through the second diode and second resistance successively, the drain electrode of first switch pipe also with change
One end of depressor primary side is connected, and the tap of transformer primary side connects positive pole, the other end and second switch of transformer primary side
The drain electrode of pipe is connected, the source electrode ground connection of second switch pipe, 9 pin phases of the grid through third diode with the first pulse width modulator
Even, 9 pins of the first pulse width modulator are grounded through 3rd resistor, the emitter of second switch pipe to drain also with the second triode
It is connected, the base stage of the second triode is connected with 9 pins of the first pulse width modulator, and the grounded collector of the second triode is described
The secondary side of transformer exports high voltage direct current after bridge rectifier rectification.
Preferably, the protection circuit against input over-voltage includes the 4 to be connected successively with 4 pins of the second pulse width modulator
Draw with the 3 of the first pulse width modulator the common end of diode, the 4th resistance and the first capacitance, the 4th resistance and the first capacitance
Foot is connected, and the first capacitance connects positive pole through the 5th diode, and the first capacitance is also through the 5th resistance eutral grounding, the first capacitance and the
Successively through the 6th diode and the second capacity earth, the second capacitance both ends are parallel with the 6th resistance, described for the common end of five resistance
Ground stream diode is connected with the common end of the second capacitance with 1 pin of the first pulse width modulator.
Preferably, second pulse width modulator is also associated with voltage conversion circuit, and voltage conversion circuit is respectively with second
11 pins and 8 pins of pulse width modulator are connected, and 11 pins of second pulse width modulator are through the 7th resistance and the three or three pole
The base stage of pipe is connected, and the base stage of third transistor is also through the 8th resistance eutral grounding, and the emitter of third transistor is grounded, the three or three pole
The collector of pipe connects positive pole through the 9th resistance and the 7th diode successively, and the collector of third transistor is also through the tenth electricity
Resistance is connected with the grid of third switching tube, and the grid of third transistor is also through the 9th resistance of the 8th diode and third capacitance connection
With the common end of the 7th diode, the drain electrode of third switching tube is connected with the output end of bridge rectifier, third switching tube
Source electrode is connected with the drain electrode of the 4th switching tube, the common end output positive voltage of the third switching tube and the 4th switching tube, and the 4th
The source electrode of switching tube is grounded, and the grid of the 4th switching tube is connected through the 9th diode with 11 pins of the second pulse width modulator, the
Nine diode both ends are parallel with eleventh resistor, and 11 pins of second pulse width modulator are also successively through twelfth resistor and
13 resistance are connected with 8 pins of the second pulse width modulator, and 8 pins of the second pulse width modulator are through the 14th resistance and the four or three
The base stage of pole pipe is connected, and also through the 15th resistance eutral grounding, the emitter of the 4th triode is grounded the base stage of the 4th triode, and the 4th
The collector of triode connects positive pole through the 16th resistance and the tenth diode successively, and the collector of the 4th triode also passes through
17th resistance is connected with the grid of the 5th switching tube, the grid of the 5th switching tube also through the 11st diode and the 4th capacitance with
The common end of 16th resistance and the tenth diode is connected, the output end of the drain electrode and bridge rectifier of the 5th switching tube
It is connected, the source electrode of the 5th switching tube is connected with the drain electrode of the 6th switching tube, the source electrode ground connection of the 6th switching tube, the 6th switching tube
Grid is connected through the 12nd diode with 8 pins of the second pulse width modulator, and the both ends of the 12nd diode are parallel with the 18th
Resistance, the common end output voltage cathode of the 5th switching tube and the 6th switching tube.
Preferably, first pulse width modulator and the second pulse width modulator are all made of TL494 series pulse-width modulation circuits.
The DC voltage of input is reverse into obtain 220V alternating currents by the first inverter by the present invention, this alternating current warp
Straightening and filtering unit obtains high voltage direct current, then obtains 220V alternating currents through the second inverter, pass through the first inverter
Output voltage can be controlled with the second inverter, there is higher efficiency；The input terminal of first inverter is distinguished
It is connected with protection circuit against input over-voltage and overheating protection circuit, the input terminal of the second inverter is connected with output over-voltage protection electricity
Road, when input voltage occurs excessive or too small, protection circuit against input over-voltage starts immediately, stops the work of the first inverter
Make, when circuit operating temperature is excessively high, starting overheating protection circuit makes the first inverter be stopped, output overvoltage protection circuit
Backfeed loop is constituted with the second inverter, stops the work of the second inverter when circuit output exception, ensures that equipment safety can
It is run by ground.
Description of the drawings
Fig. 1 is the principle of the present invention block diagram；
Fig. 2 is the circuit diagram of straightening and filtering unit of the present invention；
Fig. 3 is the circuit diagram of protection circuit against input over-voltage of the present invention；
Fig. 4 is the circuit diagram of voltage conversion circuit of the present invention.
Specific implementation mode
Technical scheme of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described embodiment
Only section Example of the invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Other all embodiments that art personnel are obtained without making creative work belong to the protection model of the present invention
It encloses.
As shown in Figures 1 to 4, a kind of inverter of the present invention, including the first inverter, whole for being sequentially connected
Stream filter and the second inverter, input direct-current voltage obtain 220V alternating currents after the first inverter, this alternating current
Rectified filter obtains high voltage direct current, then obtains 220V alternating currents through the second inverter, the first inverter
Input terminal is connected separately with protection circuit against input over-voltage and overheating protection circuit, and the input terminal of the second inverter is connected with output
Overvoltage crowbar.
First inverter uses the first pulse width modulator IC1, the second inverter to use the second pulse width modulator IC2,
In the present embodiment, the first pulse width modulator IC1 and the second pulse width modulator IC2 are all made of TL494 series pulse-width modulation circuits.
Straightening and filtering unit includes first switch pipe Q1, second switch pipe Q2, transformer T and bridge rectifier VD1, and
10 pins of the grid of one switching tube Q1 through the first diode D1 and the first pulse width modulator IC1（First in-phase output end）Phase
Even, 10 pins of the first pulse width modulator IC1（First in-phase output end）Also it is grounded through first resistor R1, first switch pipe Q1's
Grid is connected with the emitter of the first triode VT1, and the base stage of the one or three pole VT1 pipes is drawn with the 10 of the first pulse width modulator IC1
Foot（First in-phase input end）It is connected, the grounded collector of the first triode VT1, the source electrode ground connection of first switch pipe Q1, first
The drain electrode of switching tube Q1 is successively through the second diode D2 and second resistance R2 connection positive pole VCC, the leakage of first switch Q1 pipes
Pole is also connected with one end of transformer T primary sides, the positive poles VCC of the taps of transformer T primary sides connection power supply, transformer T primary sides it is another
One end is connected with the drain electrode of second switch pipe Q2, and the source electrode ground connection of second switch pipe Q2, grid is through third diode D3 and first
9 pins of pulse width modulator IC1（Second in-phase input end）It is connected, 9 pins of the first pulse width modulator IC1（Second the same as mutually defeated
Enter end）It being grounded through 3rd resistor R3, the drain electrode of second switch pipe Q2 is also connected with the emitter of the second triode VT2, and the two or three
9 pins of the base stage of pole pipe VT2 and the first pulse width modulator IC1（Second in-phase input end）It is connected, the collection of the second triode VT2
Electrode is grounded, and the secondary side of transformer T exports high voltage direct current U1 after bridge rectifier VD1 rectifications.
Protection circuit against input over-voltage includes 4 pins with the second pulse width modulator IC2 successively（Dead zone function signal inputs
End）The common end of connected the 4th diode D4, the 4th resistance R4 and the first capacitance C1, the 4th resistance R4 and the first capacitance C1 with
3 pins of first pulse width modulator IC1（Export compensating end）It is connected, the first capacitance C1 is through the 5th diode D5 connection positive poles
VCC, the first capacitance C1 are also grounded through the 5th resistance R5, and the common end of the first capacitance C1 and the 5th resistance R5 are successively through the six or two pole
Pipe D6 and the second capacitance C2 ground connection, the second both ends capacitance C2 are parallel with the 6th resistance R6, the 6th diode D6 and the second capacitance C2
Common end and the first pulse width modulator IC1 1 pin（First in-phase input end）It is connected.
Second pulse width modulator IC2 is also associated with voltage conversion circuit, voltage conversion circuit respectively with the second pulsewidth modulation
11 pins of device IC2（The first output end of push-pull circuit）With 8 pins（Push-pull circuit second output terminal）It is connected, the second pulsewidth modulation
11 pins of device IC2（The first output end of push-pull circuit）It is connected with the base stage of third transistor VT3 through the 7th electricity R7 resistances, the three or three
The base stage of pole pipe VT3 is also through the 8th resistance R8 ground connection, the emitter ground connection of third transistor VT3, the current collection of third transistor VT3
Pole is successively through the 9th resistance R9 and the 7th diode D7 connection positive poles, and the collector of third transistor VT3 is also through the tenth electricity
Resistance R10 is connected with the grid of third switching tube Q3, and the grid of third transistor Q3 is also through the 8th diode D8 and third capacitance C3
Connect the common end of the 9th resistance R9 and the 7th diode D7, the drain electrode of third switching tube Q3 is defeated with bridge rectifier VD1's
Outlet is connected, and the source electrode of third switching tube Q3 is connected with the drain electrode of the 4th switching tube Q4, third switching tube Q3 and the 4th switching tube
The common end of Q4 exports positive voltage, and the source electrode ground connection of the 4th switching tube Q4, the grid of the 4th switching tube Q4 is through the 9th diode D9
With 11 pins of the second pulse width modulator IC2（The first output end of push-pull circuit）It is connected, the 9th both ends diode D9 are parallel with the
11 resistance R11,11 pins of the second pulse width modulator IC2（The first output end of push-pull circuit）Also successively through twelfth resistor
8 pins of R12 and thirteenth resistor R13 and the second pulse width modulator IC2（Push-pull circuit second output terminal）It is connected, the second pulsewidth
8 pins of modulator IC2（Push-pull circuit second output terminal）It is connected with the base stage of the 4th triode VT4 through the 14th resistance R14,
The base stage of 4th triode VT4 is also through the 15th resistance R15 ground connection, the emitter ground connection of the 4th triode VT4, the 4th triode
The collector of VT4 is successively through the 16th resistance R16 and the tenth diode D10 connection positive poles, the current collection of the 4th triode VT4
Pole is also connected through the 17th resistance R17 with the grid of the 5th switching tube Q5, and the grid of the 5th switching tube Q5 is also through the 11st pole
Pipe D11 and the 4th capacitance C4 are connected with the common end of the 16th resistance R16 and the tenth diode D10, the leakage of the 5th switching tube Q5
Pole is connected with the output end of bridge rectifier VD1, and the source electrode of the 5th switching tube Q5 is connected with the drain electrode of the 6th switching tube Q6, the
The source electrode of six switching tube Q6 is grounded, and the grid of the 6th switching tube Q6 is through the 12nd diode D12's and the second pulse width modulator IC2
8 pins（Push-pull circuit second output terminal）It is connected, the both ends of the 12nd diode D12 are parallel with the 18th resistance R18, and the 5th opens
Close the common end output voltage cathode of pipe Q5 and the 6th switching tube Q6.
The present invention can control the output voltage of power supply, when input voltage occurs excessive or too small, input
Voltage protection circuit starts immediately, stops the work of the first inverter, when circuit operating temperature is excessively high, starts overheating protection electricity
Road makes the first inverter be stopped, and output overvoltage protection circuit and the second inverter constitute backfeed loop, when circuit output is different
Stop the work of the second inverter when often, ensures that equipment safety is reliably run.
Claims (6)
1. a kind of inverter, it is characterised in that：Including the first inverter, the straightening and filtering unit and second inverse being sequentially connected
Become device, input direct-current voltage obtains 220V alternating currents after the first inverter, and the rectified filter of this alternating current obtains
Then high voltage direct current obtains 220V alternating currents through the second inverter, the input terminal of the first inverter is connected separately with defeated
Enter overvoltage crowbar and overheating protection circuit, the input terminal of the second inverter is connected with output overvoltage protection circuit.
2. a kind of inverter as described in claim 1, it is characterised in that：First inverter uses the first pulsewidth tune
Device processed, the second inverter use the second pulse width modulator.
3. a kind of inverter as claimed in claim 2, it is characterised in that：The straightening and filtering unit includes first switch
Pipe, second switch pipe, transformer and bridge rectifier, the grid of first switch pipe is through the first diode and the first pulsewidth modulation
10 pins of device are connected, and 10 pins of the first pulse width modulator are also grounded through first resistor, the grid of switching tube and the one or three pole
The emitter of pipe is connected, and the base stage of the first triode is connected with 10 pins of the first pulse width modulator, the current collection of the first triode
Pole is grounded, and the source electrode ground connection of the first switch pipe, the drain electrode of first switch pipe connects through the second diode and second resistance successively
Positive pole is connect, the drain electrode of first switch pipe is also connected with one end of transformer primary side, and the tap of transformer primary side connects power supply
The other end of anode, transformer primary side is connected with the drain electrode of second switch pipe, and the source electrode ground connection of second switch pipe, grid is through third
Diode is connected with 9 pins of the first pulse width modulator, and 9 pins of the first pulse width modulator are grounded through 3rd resistor, and second opens
The drain electrode for closing pipe is also connected with the emitter of the second triode, 9 pins of the base stage of the second triode and the first pulse width modulator
It is connected, the grounded collector of the second triode, the secondary side of the transformer exports high voltage direct current after bridge rectifier rectification
Electricity.
4. a kind of inverter as claimed in claim 3, it is characterised in that：The protection circuit against input over-voltage include successively with
4 pins of the second pulse width modulator connected the 4th diode, the 4th resistance and the first capacitance, the 4th resistance and the first electricity
The common end of appearance is connected with 3 pins of the first pulse width modulator, and the first capacitance connects positive pole, the first electricity through the 5th diode
Hold also through the 5th resistance eutral grounding, the common end of the first capacitance and the 5th resistance successively through the 6th diode and the second capacity earth,
Second capacitance both ends are parallel with the 6th resistance, flow common end and the first pulse width modulator of diode and the second capacitance describedly
1 pin is connected.
5. a kind of inverter as claimed in claim 4, it is characterised in that：Second pulse width modulator is also associated with voltage
Translation circuit, voltage conversion circuit are connected with 11 pins of the second pulse width modulator and 8 pins respectively, second pulsewidth modulation
11 pins of device are connected through the 7th resistance with the base stage of third transistor, the base stage of third transistor also through the 8th resistance eutral grounding,
The emitter of third transistor is grounded, and the collector of third transistor is connecting power supply just through the 9th resistance and the 7th diode successively
The collector of pole, third transistor is also connected through the tenth resistance with the grid of third switching tube, and the grid of third transistor also passes through
The common end of 8th diode and third capacitance connection the 9th resistance and the 7th diode, the drain electrode of third switching tube and bridge-type are whole
The output end of current circuit is connected, and the source electrode of third switching tube is connected with the drain electrode of the 4th switching tube, the third switching tube and the
The common end of four switching tubes exports positive voltage, and the source electrode ground connection of the 4th switching tube, the grid of the 4th switching tube is through the 9th diode
It is connected with 11 pins of the second pulse width modulator, the 9th diode both ends are parallel with eleventh resistor, second pulsewidth modulation
11 pins of device are also connected through twelfth resistor and thirteenth resistor with 8 pins of the second pulse width modulator successively, the second pulsewidth
8 pins of modulator are connected through the 14th resistance with the base stage of the 4th triode, and the base stage of the 4th triode is also through the 15th electricity
Resistance ground connection, the emitter ground connection of the 4th triode, the collector of the 4th triode is successively through the 16th resistance and the tenth diode
Positive pole is connected, the collector of the 4th triode is also connected through the 17th resistance with the grid of the 5th switching tube, the 5th switch
The grid of pipe is also connected through the 11st diode and the 4th capacitance with the common end of the 16th resistance and the tenth diode, and described
The drain electrode of five switching tubes is connected with the output end of bridge rectifier, the drain electrode phase of the source electrode and the 6th switching tube of the 5th switching tube
Even, the source electrode ground connection of the 6th switching tube, 8 pins of the grid through the 12nd diode and the second pulse width modulator of the 6th switching tube
It is connected, the both ends of the 12nd diode are parallel with the 18th resistance, and the common end of the 5th switching tube and the 6th switching tube is defeated
Go out voltage cathode.
6. a kind of inverter as claimed in claim 5, it is characterised in that：First pulse width modulator and the second pulsewidth tune
Device processed is all made of TL494 series pulse-width modulation circuits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483841.2A CN108306531A (en) | 2017-12-29 | 2017-12-29 | A kind of inverter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711483841.2A CN108306531A (en) | 2017-12-29 | 2017-12-29 | A kind of inverter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108306531A true CN108306531A (en) | 2018-07-20 |
Family
ID=62867853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711483841.2A Withdrawn CN108306531A (en) | 2017-12-29 | 2017-12-29 | A kind of inverter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108306531A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760275A (en) * | 2023-08-17 | 2023-09-15 | 成都吉瓦特科技有限公司 | Island-preventing circuit of miniature photovoltaic grid-connected inverter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202634313U (en) * | 2012-04-10 | 2012-12-26 | 东莞市有有光电有限公司 | Inverter |
-
2017
- 2017-12-29 CN CN201711483841.2A patent/CN108306531A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202634313U (en) * | 2012-04-10 | 2012-12-26 | 东莞市有有光电有限公司 | Inverter |
Non-Patent Citations (1)
| Title |
|---|
| 李成华: "迈腾B7L逆变器相关电路原理与维修", 《汽车电器》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116760275A (en) * | 2023-08-17 | 2023-09-15 | 成都吉瓦特科技有限公司 | Island-preventing circuit of miniature photovoltaic grid-connected inverter |
| CN116760275B (en) * | 2023-08-17 | 2023-11-03 | 成都吉瓦特科技有限公司 | Island-preventing circuit of miniature photovoltaic grid-connected inverter |
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Application publication date: 20180720 |