CN104578851A - Inverter for high-frequency high-voltage power supply - Google Patents
Inverter for high-frequency high-voltage power supply Download PDFInfo
- Publication number
- CN104578851A CN104578851A CN201310497489.3A CN201310497489A CN104578851A CN 104578851 A CN104578851 A CN 104578851A CN 201310497489 A CN201310497489 A CN 201310497489A CN 104578851 A CN104578851 A CN 104578851A
- Authority
- CN
- China
- Prior art keywords
- unit
- voltage
- comparing unit
- output
- inversion
- 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.)
- Pending
Links
Classifications
-
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses an inverter for a high-frequency high-voltage power supply. The inverter comprises an inversion unit, a current sampling unit connected with the output end of the inversion unit, a voltage sampling unit connected with the output end of the inversion unit, a first comparing unit connected with the current sampling unit, a second comparing unit connected with the voltage sampling unit, a fault indication unit connected with the output ends of the first comparing unit and the second comparing unit, and a control unit which is connected with the output ends of the first comparing unit and the second comparing unit and used for controlling the inversion unit to stop working when the high level is outputted by the first comparing unit or the second comparing unit. The inverter disclosed by the invention is simple in circuit structure, convenient to maintain, and high in reliability, and can immediately detect failure occurrence and control the inversion unit to stop working.
Description
Technical field
The present invention relates to a kind of high-frequency and high-voltage power supply inverter.
Background technology
Inverter is the important component part of high-frequency and high-voltage power supply, its function is that direct current is converted to alternating current, the electric property of inverter and reliability directly affect the stable operation of high-frequency and high-voltage power supply, can monitor inverter in time and to break down and to make fast processing very important.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of high-frequency and high-voltage power supply inverter.
Technological means of the present invention is as follows:
A kind of high-frequency and high-voltage power supply inverter, comprising:
Inversion unit;
Being connected with inversion unit output terminal, also exporting the current sampling unit of the voltage signal corresponding with described output current for detecting inversion unit output current;
Be connected with inversion unit output terminal, for detecting inversion unit output voltage and exporting the voltage sampling unit corresponding with described output voltage;
Connect current sampling unit, compare for the voltage signal corresponding with output current that export current sampling unit and predeterminated voltage I, export the first comparing unit of high level when the voltage signal corresponding with output current that current sampling unit exports is greater than predeterminated voltage I;
Connect voltage sampling unit, compare for the voltage signal corresponding with output voltage that export voltage sampling unit and predeterminated voltage II, export the second comparing unit of high level when the voltage signal corresponding with output voltage that voltage sampling unit exports is greater than predeterminated voltage II;
Connecting the first comparing unit output terminal and the second comparing unit output terminal, for showing inversion unit output overcurrent when the first comparing unit exports high level, showing the indicating fault unit of inversion unit output overvoltage when the second comparing unit exports high level;
Connect the first comparing unit output terminal and the second comparing unit output terminal, for controlling the out-of-work control module of inversion unit when the first comparing unit or the second comparing unit export high level;
Further, described indicating fault unit can be made up of current-limiting resistance and light emitting diode.
Owing to have employed technique scheme, high-frequency and high-voltage power supply inverter provided by the invention, inversion unit output current signal is gathered by current sampling unit, inversion unit output voltage signal is gathered by voltage sampling unit, first comparing unit compares voltage signal corresponding to output current and predeterminated voltage I, when the voltage signal that output current is corresponding is greater than predeterminated voltage I, the first comparing unit exports high level, now illustrate that output current is too high, there is over-current phenomenon avoidance, indicating fault unit carries out corresponding failure display, second comparing unit compares voltage signal corresponding to output voltage and predeterminated voltage II, when the voltage signal that output voltage is corresponding is greater than predeterminated voltage II, the second comparing unit exports high level, now illustrate that output voltage is too high, there is overvoltage phenomenon, indicating fault unit carries out corresponding failure display, control module exports high level according to the first comparing unit or the second comparing unit and learns inversion unit output overcurrent or overvoltage, timely control inversion unit quits work, circuit structure of the present invention is simple, be convenient to safeguard, can detection failure occur and control inversion unit to quit work in time, reliability is high.
Accompanying drawing explanation
Fig. 1 is structured flowchart of the present invention.
Embodiment
A kind of high-frequency and high-voltage power supply inverter as shown in Figure 1, is characterized in that comprising: inversion unit; Being connected with inversion unit output terminal, also exporting the current sampling unit of the voltage signal corresponding with described output current for detecting inversion unit output current; Be connected with inversion unit output terminal, for detecting inversion unit output voltage and exporting the voltage sampling unit corresponding with described output voltage; Connect current sampling unit, compare for the voltage signal corresponding with output current that export current sampling unit and predeterminated voltage I, export the first comparing unit of high level when the voltage signal corresponding with output current that current sampling unit exports is greater than predeterminated voltage I; Connect voltage sampling unit, compare for the voltage signal corresponding with output voltage that export voltage sampling unit and predeterminated voltage II, export the second comparing unit of high level when the voltage signal corresponding with output voltage that voltage sampling unit exports is greater than predeterminated voltage II; Connecting the first comparing unit output terminal and the second comparing unit output terminal, for showing inversion unit output overcurrent when the first comparing unit exports high level, showing the indicating fault unit of inversion unit output overvoltage when the second comparing unit exports high level; Connect the first comparing unit output terminal and the second comparing unit output terminal, for controlling the out-of-work control module of inversion unit when the first comparing unit or the second comparing unit export high level; Further, described indicating fault unit can be made up of current-limiting resistance and light emitting diode.
High-frequency and high-voltage power supply inverter provided by the invention, inversion unit output current signal is gathered by current sampling unit, inversion unit output voltage signal is gathered by voltage sampling unit, first comparing unit compares voltage signal corresponding to output current and predeterminated voltage I, when the voltage signal that output current is corresponding is greater than predeterminated voltage I, the first comparing unit exports high level, now illustrate that output current is too high, there is over-current phenomenon avoidance, indicating fault unit carries out corresponding failure display, second comparing unit compares voltage signal corresponding to output voltage and predeterminated voltage II, when the voltage signal that output voltage is corresponding is greater than predeterminated voltage II, the second comparing unit exports high level, now illustrate that output voltage is too high, there is overvoltage phenomenon, indicating fault unit carries out corresponding failure display, control module exports high level according to the first comparing unit or the second comparing unit and learns inversion unit output overcurrent or overvoltage, timely control inversion unit quits work, circuit structure of the present invention is simple, be convenient to safeguard, can detection failure occur and control inversion unit to quit work in time, reliability is high.
The above; be only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to according to technical scheme of the present invention and inventive concept thereof and replace or change, all should be encompassed within protection scope of the present invention.
Claims (2)
1. a high-frequency and high-voltage power supply inverter, is characterized in that comprising:
Inversion unit;
Being connected with inversion unit output terminal, also exporting the current sampling unit of the voltage signal corresponding with described output current for detecting inversion unit output current;
Be connected with inversion unit output terminal, for detecting inversion unit output voltage and exporting the voltage sampling unit corresponding with described output voltage;
Connect current sampling unit, compare for the voltage signal corresponding with output current that export current sampling unit and predeterminated voltage I, export the first comparing unit of high level when the voltage signal corresponding with output current that current sampling unit exports is greater than predeterminated voltage I;
Connect voltage sampling unit, compare for the voltage signal corresponding with output voltage that export voltage sampling unit and predeterminated voltage II, export the second comparing unit of high level when the voltage signal corresponding with output voltage that voltage sampling unit exports is greater than predeterminated voltage II;
Connecting the first comparing unit output terminal and the second comparing unit output terminal, for showing inversion unit output overcurrent when the first comparing unit exports high level, showing the indicating fault unit of inversion unit output overvoltage when the second comparing unit exports high level;
Connect the first comparing unit output terminal and the second comparing unit output terminal, for controlling the out-of-work control module of inversion unit when the first comparing unit or the second comparing unit export high level.
2. a kind of high-frequency and high-voltage power supply inverter according to claim 1, is characterized in that described indicating fault unit can be made up of current-limiting resistance and light emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497489.3A CN104578851A (en) | 2013-10-21 | 2013-10-21 | Inverter for high-frequency high-voltage power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310497489.3A CN104578851A (en) | 2013-10-21 | 2013-10-21 | Inverter for high-frequency high-voltage power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104578851A true CN104578851A (en) | 2015-04-29 |
Family
ID=53094232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310497489.3A Pending CN104578851A (en) | 2013-10-21 | 2013-10-21 | Inverter for high-frequency high-voltage power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104578851A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825860A (en) * | 2017-01-19 | 2017-06-13 | 南京力仕达焊接科技有限公司 | Inverter type welder failure detector |
-
2013
- 2013-10-21 CN CN201310497489.3A patent/CN104578851A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825860A (en) * | 2017-01-19 | 2017-06-13 | 南京力仕达焊接科技有限公司 | Inverter type welder failure detector |
| CN106825860B (en) * | 2017-01-19 | 2019-10-11 | 南京力仕达焊接科技有限公司 | Inverter type welder fault detection means |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103208782B (en) | The comprehensive detection of a kind of power frequency and variable frequency power supply and Protector for using electricity | |
| CN103199506A (en) | Over-current protection circuit and backlight module of light source drive module | |
| CN202939292U (en) | Direct-current power supply monitoring circuit | |
| CN103618286A (en) | Transient over-voltage protection circuit | |
| CN104218532A (en) | Voltage protection circuit for frequency converter direct current (DC) bus | |
| CN204391679U (en) | A kind of leakage current detection protection circuit | |
| CN103928909A (en) | Quick and reliable short-circuit protection method and circuit of switch power supply | |
| CN204882821U (en) | Killer switch state detection circuitry | |
| CN103926516B (en) | Online diode detection circuit | |
| CN202929127U (en) | Circuit for detecting three-phase electricity phase sequence and open phase | |
| CN202679748U (en) | LED driving power supply circuit | |
| CN204992521U (en) | Electric energy meter that single -phase electric energy meter operated a switch control circuit and made with this circuit | |
| CN204230865U (en) | A kind of motor protecting device | |
| CN104578851A (en) | Inverter for high-frequency high-voltage power supply | |
| CN104682331A (en) | Power supply short circuit protection circuit | |
| CN102931631B (en) | Output earth leakage protection device for high-voltage and direct-current power supply system | |
| CN202856691U (en) | Control protection circuit of solid state microwave power amplifier | |
| CN205484714U (en) | Circuit is listened to killer switch state | |
| CN104682334A (en) | Guard grating circuit and lamp | |
| CN204666713U (en) | The detection of generator amature superpotential action and protection circuit | |
| CN204205547U (en) | A kind of current foldback circuit for large power supply input | |
| CN103472354A (en) | Switching-closing judging circuit of electric leakage reclosure breaker | |
| CN201699599U (en) | Intrinsic-intrinsic-safety power supply with high output power | |
| CN201946962U (en) | Driving protective circuit of IGBT (insulated gate bipolar translator) power switching tube bridge circuit | |
| CN205141621U (en) | Protective circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150429 |