CN105515433A - High-precision intermediate-frequency power source - Google Patents
High-precision intermediate-frequency power source Download PDFInfo
- Publication number
- CN105515433A CN105515433A CN201510987322.4A CN201510987322A CN105515433A CN 105515433 A CN105515433 A CN 105515433A CN 201510987322 A CN201510987322 A CN 201510987322A CN 105515433 A CN105515433 A CN 105515433A
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- China
- Prior art keywords
- circuit
- inverter
- connects
- waveform generator
- frequency power
- 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
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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
- 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
- H02M7/539—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 with automatic control of output wave form or frequency
- H02M7/5395—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 with automatic control of output wave form or frequency by pulse-width modulation
-
- 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
- H02M1/12—Arrangements for reducing harmonics from ac input or output
-
- 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
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/06—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes without control electrode or semiconductor devices without control electrode
-
- 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
- H02M1/0003—Details of control, feedback or regulation circuits
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Inverter Devices (AREA)
Abstract
The invention relates to a high-precision intermediate-frequency power source. The high-precision intermediate-frequency power source is composed of a voltage adjustment circuit, an inverter, an intermediate-frequency alternating-current filterer, a driving circuit, a waveform generator, a single-chip microcomputer and an A/D conversion circuit; the voltage adjustment circuit is connected with the inverter; the inverter is connected with the intermediate-frequency alternating-current filterer; the intermediate-frequency alternating-current filterer is connected with the waveform generator; the waveform generator is connected with the driving circuit; the driving circuit is connected with a main circuit; the main circuit is connected with the inverter; the waveform generator is connected with the A/D conversion circuit; the A/D conversion circuit is connected with the single-chip microcomputer; and the single-chip microcomputer is connected with a voltage display. According to the high-precision intermediate-frequency power source of the invention, the integrated controller TL494 is adopted to generate pulse width modulation waveforms; a TLP250 driving MOSFET is adopted to form the driving circuit; and driven PWM signals pass through a full-bridge inversion and resonant tank path, so that 10kHz sinusoidal signals can be generated.
Description
Technical field
the present invention relates to a kind of power supply, particularly one can produce frequency is 10kHz, and output waveform is sinusoidal wave high accuracy intermediate frequency power supply.
Background technology
intermediate frequency power supply is used to study transformation of electrical energy principle and converting means, and it utilizes semiconductor power device and Passive Power device, microprocessor and large scale integrated circuit, transformation theory, is that core converts electric energy and controls with power conversion circuit.
conventional intermediate frequency power supply generally comprises two links, namely very voltage stabilization part before, after very medium frequency inverter part, substantially adopt resolution element, though without traditional rotating parts, volume is still larger, efficiency is lower, structure is numerous and diverse, and unreliable factor is more, directly affects the reliability of equipment and even whole system.Want to improve intermediate frequency power supply performance further, reduce volume, first must to reduce the link raising integrated level from circuit.For this reason, advanced converter technique is adopted to become only way.Highly reliable and high performance intermediate frequency power supply, has been widely used in Aeronautics and Astronautics, naval vessel, locomotive, induction heating and the equipment such as radar, communication switchboard.Therefore, to the research of this type of power supply, there is very high engineering practical value.
Summary of the invention
the object of the invention is to adopt and produce pulse-width modulation waveform by integrated manipulator TL494, design TLP250 driven MOS FET forms drive circuit, by the pwm signal after driving through full-bridge inverting and resonant groove path, the high accuracy intermediate frequency power supply of the sinusoidal signal of 10kHz can be created.
object of the present invention is achieved through the following technical solutions:
a kind of high accuracy intermediate frequency power supply, be made up of regulating circuit, inverter, midfrequent AC filter, drive circuit, waveform generator, single-chip microcomputer, A/D change-over circuit, described regulating circuit connects inverter, described inverter connects midfrequent AC filter, described midfrequent AC filter connects waveform generator, described waveform generator connects drive circuit, described drive circuit connects main circuit, described main circuit connects inverter, described waveform generator connects A/D change-over circuit, described A/D change-over circuit connects single-chip microcomputer, and described single-chip microcomputer connects voltage display.
described waveform generator adopts integrated manipulator TL494.
described drive circuit adopts TLP250 power drive MOS.
beneficial effect of the present invention: a kind of high accuracy intermediate frequency power supply of the present invention, adopt and produce pulse-width modulation waveform by integrated manipulator TL494, design TLP250 driven MOS FET forms drive circuit, by the pwm signal after driving through full-bridge inverting and resonant groove path, the high-precision power of the sinusoidal signal of 10kHz can be created.
the present invention comprises input filter, rectification and filtering, inverter circuit.Wherein adopt TL494 as the follower of pulse-width modulation, adopt TLP250 power drive MOS to form drive circuit.Wherein input filter: its effect is the clutter that filtration electrical network exists, the interference feedback simultaneously also hindering inverter to produce is to public electric wire net; Rectification and filtering: be more level and smooth direct current by direct for common frequency power network AC power rectification, convert for next stage; Inversion: the alternating current direct current after rectification being become high frequency rectangular ripple.
input filter: in Switching Power Supply, the diode current magnitude of voltage of rectifier switch diode rises fast or declines, and the electric current of inductive drop electric capacity also changes rapidly.These performances all constituting electromagnetic interference source interference are output voltage waveforms distortion, input current has high order harmonic component even to have electromagenetic wave radiation to reduce interference in space, reduce the aberration rate of output supply voltage waveform, simultaneously, also do not destroy or disturb other electronic equipment using same power work, and, external electric equipment also can be prevented the interference of Switching Power Supply, install inlet wire filter additional at ac power input end.
input rectification circuit: in order to obtain direct current from AC power, need utilize the rectification circuit be made up of rectifier cell.Here the mode of rectification circuit selects three-phase full wave rectifier circuit.Three-phase bridge rectifier circuit forms primarily of six rectifying bridge arms, one group above two groups is divided into be odd number group, their negative electrode links together, for the positive pole that rectifier exports, and anode to be connected on a group of ABC tri-end points top and bottom be respectively even number set, their anode is connected together, as the negative pole that rectifier exports, and negative electrode is connected on A respectively, on B, C tri-end points.
inverter circuit: key link is the inverter circuit being become interchange from direct current.In addition, the effect of input filter lowers DC terminal voltage pulse and absorb the reactive power of inversion load end; The effect of output filter is the harmonic component lowering load terminal voltage, and the waveform distortion of proof load voltage reaches designing requirement.
Accompanying drawing explanation
fig. 1 is hardware elementary diagram of the present invention;
fig. 2 is the rectification circuit schematic diagram in the present invention.
Embodiment
embodiment 1
composition graphs 1, Fig. 1 is hardware elementary diagram of the present invention.A kind of high accuracy intermediate frequency power supply, be made up of regulating circuit, inverter, midfrequent AC filter, drive circuit, waveform generator, single-chip microcomputer, A/D change-over circuit, described regulating circuit connects inverter, described inverter connects midfrequent AC filter, described midfrequent AC filter connects waveform generator, described waveform generator connects drive circuit, described drive circuit connects main circuit, described main circuit connects inverter, described waveform generator connects A/D change-over circuit, described A/D change-over circuit connects single-chip microcomputer, and described single-chip microcomputer connects voltage display.
the present invention comprises input filter, rectification and filtering, inverter circuit.Wherein adopt TL494 as the follower of pulse-width modulation, adopt TLP250 power drive MOS to form drive circuit.Wherein input filter: its effect is the clutter that filtration electrical network exists, the interference feedback simultaneously also hindering inverter to produce is to public electric wire net; Rectification and filtering: be more level and smooth direct current by direct for common frequency power network AC power rectification, convert for next stage; Inversion: the alternating current direct current after rectification being become high frequency rectangular ripple.
input filter: in Switching Power Supply, the diode current magnitude of voltage of rectifier switch diode rises fast or declines, and the electric current of inductive drop electric capacity also changes rapidly.These performances all constituting electromagnetic interference source interference are output voltage waveforms distortion, input current has high order harmonic component even to have electromagenetic wave radiation to reduce interference in space, reduce the aberration rate of output supply voltage waveform, simultaneously, also do not destroy or disturb other electronic equipment using same power work, and, external electric equipment also can be prevented the interference of Switching Power Supply, install inlet wire filter additional at ac power input end.
embodiment 2
composition graphs 2, Fig. 2 is the rectification circuit schematic diagram in the present invention.Input rectification circuit: in order to obtain direct current from AC power, need utilize the rectification circuit be made up of rectifier cell.Here the mode of rectification circuit selects three-phase full wave rectifier circuit.Three-phase bridge rectifier circuit forms primarily of six rectifying bridge arms, one group above two groups is divided into be odd number group, their negative electrode links together, for the positive pole that rectifier exports, and anode to be connected on a group of ABC tri-end points top and bottom be respectively even number set, their anode is connected together, as the negative pole that rectifier exports, and negative electrode is connected on A respectively, on B, C tri-end points.
inverter circuit: key link is the inverter circuit being become interchange from direct current.In addition, in figure, the effect of input filter lowers DC terminal voltage pulse and absorb the reactive power of inversion load end; The effect of output filter is the harmonic component lowering load terminal voltage, and the waveform distortion of proof load voltage reaches designing requirement.
Claims (3)
1. a high accuracy intermediate frequency power supply, it is characterized in that: by regulating circuit, inverter, midfrequent AC filter, drive circuit, waveform generator, single-chip microcomputer, A/D change-over circuit is formed, described regulating circuit connects inverter, described inverter connects midfrequent AC filter, described midfrequent AC filter connects waveform generator, described waveform generator connects drive circuit, described drive circuit connects main circuit, described main circuit connects inverter, described waveform generator connects A/D change-over circuit, described A/D change-over circuit connects single-chip microcomputer, described single-chip microcomputer connects voltage display.
2. a kind of high accuracy intermediate frequency power supply according to claim 1, is characterized in that: described waveform generator adopts integrated manipulator TL494.
3. a kind of high accuracy intermediate frequency power supply according to claim 1, is characterized in that: described drive circuit adopts TLP250 power drive MOS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510987322.4A CN105515433A (en) | 2015-12-27 | 2015-12-27 | High-precision intermediate-frequency power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510987322.4A CN105515433A (en) | 2015-12-27 | 2015-12-27 | High-precision intermediate-frequency power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105515433A true CN105515433A (en) | 2016-04-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510987322.4A Pending CN105515433A (en) | 2015-12-27 | 2015-12-27 | High-precision intermediate-frequency power source |
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| CN (1) | CN105515433A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201063889Y (en) * | 2007-07-10 | 2008-05-21 | 湘潭科创机电有限公司 | Intermediate frequency power supply induction heater |
| CN101667791A (en) * | 2009-09-27 | 2010-03-10 | 大连金光节能机电技术有限公司 | Intelligent adjustable intermediate frequency power supply |
| CN102107157A (en) * | 2009-12-28 | 2011-06-29 | 厦门锐传科技有限公司 | Intelligent medium-frequency high-voltage double-output direct current power supply for electric dust removal |
| CN105763071A (en) * | 2014-12-13 | 2016-07-13 | 哈尔滨米米米业科技有限公司 | High-precision medium-frequency power supply |
-
2015
- 2015-12-27 CN CN201510987322.4A patent/CN105515433A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201063889Y (en) * | 2007-07-10 | 2008-05-21 | 湘潭科创机电有限公司 | Intermediate frequency power supply induction heater |
| CN101667791A (en) * | 2009-09-27 | 2010-03-10 | 大连金光节能机电技术有限公司 | Intelligent adjustable intermediate frequency power supply |
| CN102107157A (en) * | 2009-12-28 | 2011-06-29 | 厦门锐传科技有限公司 | Intelligent medium-frequency high-voltage double-output direct current power supply for electric dust removal |
| CN105763071A (en) * | 2014-12-13 | 2016-07-13 | 哈尔滨米米米业科技有限公司 | High-precision medium-frequency power supply |
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Application publication date: 20160420 |
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