CN203747682U - Device of single-phase AC-DC conversion power supply - Google Patents
Device of single-phase AC-DC conversion power supply Download PDFInfo
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- CN203747682U CN203747682U CN201420023625.5U CN201420023625U CN203747682U CN 203747682 U CN203747682 U CN 203747682U CN 201420023625 U CN201420023625 U CN 201420023625U CN 203747682 U CN203747682 U CN 203747682U
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- 238000006243 chemical reaction Methods 0.000 title abstract description 5
- 238000005070 sampling Methods 0.000 claims abstract description 28
- 238000012937 correction Methods 0.000 claims abstract description 15
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 abstract description 3
- 230000033228 biological regulation Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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Abstract
The utility model relates to a device of a single-phase AC-DC conversion power supply, and belongs to the technical field of converters. The device of the single-phase AC-DC conversion power supply comprises a sampling circuit I, a rectifier bridge, a power factor correction circuit, a voltage boosting circuit, a filtering circuit, a sampling circuit II, a measuring circuit, a relay, a singlechip microcomputer, a key module, a liquid crystal module and a reference unit, wherein the sampling unit I, the rectifier bridge, the power factor correction circuit, the voltage boosting circuit, the filtering circuit and the sampling circuit II are sequentially connected, the other end of the sampling circuit I is sequentially connected with the measuring circuit and an I/O port of the singlechip microcomputer, the other end of the sampling circuit II is connected with an AD port of the singlechip microcomputer, one end of the relay is connected with the I/O port of the singlechip microcomputer, the other end is connected between the rectifier bridge and the power factor correction circuit, the key module and the liquid crystal module are connected with the I/O port of the singlechip microcomputer, and the reference unit is connected with the AD port of the singlechip microcomputer. The device provided by the utility model is used for solving problems of low power factor and the like of a traditional conversion circuit.
Description
Technical field
The utility model relates to a kind of device of single-phase AC-DC converting power source, belongs to converter technical field.
Background technology
At present, along with the fast development of integrated circuit, power-switching circuit is widely used in charger, adapter, light fixture and various precision instrument, and the output dc voltage required precision of the change-over circuit of increasing application to power supply also improves thereupon, but the direct voltage precision of at present traditional AC-DC switching current output is not high, load regulation is lower, can not meet the application demand of multiple fields far away.
Along with becoming increasingly conspicuous of global energy crisis, " green energy resource " is rooted in the hearts of the people." green energy resource " not only requires power consumption equipment energy conversion efficiency high but also require power should belong to high, avoids electric network pollution.
In sum, existing AC-DC power circuit power factor is low, even if having power factor emendation function, its power factor and stability neither be very desirable, and efficiency is low, and voltage regulation result is bad, does not have measuring unit simultaneously, can not Real-Time Monitoring parameters.
Summary of the invention
The problem and the deficiency that exist for above-mentioned prior art, the utility model provides a kind of device of single-phase AC-DC converting power source.This device is used for solving that traditional AC-DC change-over circuit power factor is low, and efficiency is low, and precision is low, and voltage regulation result is bad, can not measure the problems such as parameters, and the utility model is achieved through the following technical solutions.
A kind of device of single-phase AC-DC converting power source, comprise sample circuit I1, rectifier bridge 2, power factor correction circuits 3, booster circuit 4, filter circuit 5, sample circuit II6, measuring circuit 7, relay 8, single-chip microcomputer 9, key-press module 10, Liquid Crystal Module 11 and reference cell 12, described sample circuit I1, rectifier bridge 2, power factor correction circuits 3, booster circuit 4, filter circuit 5 and sample circuit II6 are linked in sequence, the sample circuit I1 other end connects measuring circuit 7 successively, the I/O mouth of single-chip microcomputer 9, the sample circuit II6 other end connects the AD mouth of single-chip microcomputer 9, relay 8 one end are connected with the I/O mouth of single-chip microcomputer 9, the other end is connected between rectifier bridge 2 and power factor correction circuits 3, key-press module 10, Liquid Crystal Module 11 is connected with the I/O mouth of single-chip microcomputer 9 respectively, reference cell 12 is connected with the AD mouth of single-chip microcomputer 9.
Described sample circuit I1 comprises alternating voltage sampling apparatus and alternating current sampling apparatus, and sample circuit II6 comprises direct voltage sampling apparatus and direct current sampling apparatus.
Chip in above-mentioned power factor correction circuits 3 can be selected UCC28019 chip, the measuring unit of measuring circuit 7 is mainly taking CS5460A chip as main, the main booster circuit taking BOOST as main circuit topological structure of booster circuit 4, reference cell 12 is mainly taking reference voltage chip LM1117 as main.
In above-mentioned test sample process, first this device is adjusted to certainty of measurement, reference cell is provided the sampling reference voltage of 3.3V by reference voltage chip LM1117, first utilize the AD sample port sampling 3.3V voltage of single-chip microcomputer 9, the sampled value that sampling obtains is Uo, then the sample circuit II6 voltage that will obtain of sampling is U1, actual samples voltage is U2 so, U2=(U1 × 3.3V)/Uo, adopt in addition the averaged of repeatedly sampling, greatly improve the accuracy of sampling, the current accuracy of output is also improved greatly.
Voltage stabilizing process in said apparatus is to detect in real time output voltage by single-chip microcomputer, and then the PWM ripple of regulation output makes output voltage stabilization automatically.
The operation principle of this device is:
The first step: input AC electricity, sample circuit I1 samples alternating voltage and the electric current of input, and data are passed to measuring circuit 7, through measuring circuit 7, signal is passed to single-chip microcomputer 9, then the parameters of measurement is presented on Liquid Crystal Module 11;
Second step: input ac voltage, after rectifier bridge 2 rectifications, carries out the power factor calibration of voltage and current by power factor correction circuits 3, make the phase difference of voltage and current substantially close to zero;
Then the 3rd step: the voltage after calibration utilizes BOOST main circuit topological structure that voltage is raise through booster circuit 4 after filter circuit 5 filtering, is exactly can be for the direct voltage using;
The 4th step: sample circuit II6 real-time sampling output dc voltage and electric current, voltage and the desirable fiducial value comparison of the inside AD real-time sampling reference cell of single-chip microcomputer 9, then calibrate the sample circuit II6 signal obtaining of sampling, the signal that sampling is obtained is more accurate, and is presented on Liquid Crystal Module 11;
The 5th step: can, according to the prompting of Liquid Crystal Module 11, set size and the protective current size of output voltage by key-press module 10; When setting after output voltage change, single-chip microcomputer 9 is adjusted the PWM ripple of output automatically, and in PWM ripple control booster circuit 4, the switching frequency of switching tube changes the size of output voltage;
The 6th step: in the time that single-chip microcomputer 9 detects that output current exceedes protective current, single-chip microcomputer 8 is exported a signal to relay 8, and relay 8 disconnects output circuit, stops the power supply of rectifier bridge 2 with rear section.
The 7th step: otherwise this change-over circuit is normally worked.
In above-mentioned this device, load regulation is less than 0.5%; After output voltage values is set, input voltage changes between 20 ~ 30V, and output voltage regulation is less than 0.5%; The measuring result error of measuring circuit is less than 3%; Input side power factor is not less than 0.98; Translation circuit efficiency is not less than 96%; Output direct current equals under 2A condition, and output dc voltage is changed within 0.1V.
The beneficial effects of the utility model are: this device has the calibration function of High Power Factor, and delivery efficiency is high, and voltage regulation result is good; output dc voltage is adjustable; output voltage precision is high, and reliability is strong, safe; simple structure; low cost of manufacture has the electric energy of measurement, voltage, electric current, active power, reactive power, the isoparametric function of power factor simultaneously, and the precision of measurement is high; there is defencive function, have very high practicality.
Brief description of the drawings
Fig. 1 is the utility model structured flowchart;
Fig. 2 is the utility model element connection diagram.
In figure: 1-sample circuit I, 2-rectifier bridge, 3-power factor correction circuits, 4-booster circuit, 5-filter circuit, 6-sample circuit II, 7-measuring circuit, 8-relay, 9-single-chip microcomputer, 10-key-press module, 11-Liquid Crystal Module, 12-reference cell, R1, R2, R3, R4, R5, R6-resistance, PT-voltage transformer, CT-current transformer, D1-rectifier bridge, D2-fly-wheel diode, the normally-closed contact of KM1-relay, the coil of KM2-relay, L-inductance, MOS-mos pipe, C-electrochemical capacitor, Q-operational amplifier.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Embodiment 1
As shown in Fig. 1 to 2, the device of this single-phase AC-DC converting power source, comprise sample circuit I1, rectifier bridge 2, power factor correction circuits 3, booster circuit 4, filter circuit 5, sample circuit II6, measuring circuit 7, relay 8, single-chip microcomputer 9, key-press module 10, Liquid Crystal Module 11 and reference cell 12, described sample circuit I1, rectifier bridge 2, power factor correction circuits 3, booster circuit 4, filter circuit 5 and sample circuit II6 are linked in sequence, the sample circuit I1 other end connects measuring circuit 7 successively, the I/O mouth of single-chip microcomputer 9, the sample circuit II6 other end connects the AD mouth of single-chip microcomputer 9, relay 8 one end are connected with the I/O mouth of single-chip microcomputer 9, the other end is connected between rectifier bridge 2 and power factor correction circuits 3, key-press module 10, Liquid Crystal Module 11 is connected with the I/O mouth of single-chip microcomputer 9 respectively, reference cell 12 is connected with the AD mouth of single-chip microcomputer 9.
Wherein sample circuit I1 comprises alternating voltage sampling apparatus and alternating current sampling apparatus, and sample circuit II6 comprises direct voltage sampling apparatus and direct current sampling apparatus.
Claims (2)
1. a device for single-phase AC-DC converting power source, is characterized in that: comprise sample circuit I(1), rectifier bridge (2), power factor correction circuits (3), booster circuit (4), filter circuit (5), sample circuit II(6), measuring circuit (7), relay (8), single-chip microcomputer (9), key-press module (10), Liquid Crystal Module (11) and reference cell (12), described sample circuit I(1), rectifier bridge (2), power factor correction circuits (3), booster circuit (4), filter circuit (5) and sample circuit II(6) be linked in sequence, sample circuit I(1) other end connects measuring circuit (7) successively, the I/O mouth of single-chip microcomputer (9), sample circuit II(6) other end connect single-chip microcomputer (9) AD mouth, relay (8) one end is connected with the I/O mouth of single-chip microcomputer (9), and the other end is connected between rectifier bridge (2) and power factor correction circuits (3), key-press module (10), Liquid Crystal Module (11) is connected with the I/O mouth of single-chip microcomputer (9) respectively, and reference cell (12) is connected with the AD mouth of single-chip microcomputer (9).
2. the device of single-phase AC-DC converting power source according to claim 1, it is characterized in that: described sample circuit I(1) comprise alternating voltage sampling apparatus and alternating current sampling apparatus, sample circuit II(6) comprise direct voltage sampling apparatus and direct current sampling apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023625.5U CN203747682U (en) | 2014-01-15 | 2014-01-15 | Device of single-phase AC-DC conversion power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420023625.5U CN203747682U (en) | 2014-01-15 | 2014-01-15 | Device of single-phase AC-DC conversion power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203747682U true CN203747682U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420023625.5U Expired - Fee Related CN203747682U (en) | 2014-01-15 | 2014-01-15 | Device of single-phase AC-DC conversion power supply |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656302A (en) * | 2016-04-07 | 2016-06-08 | 湖州积微电子科技有限公司 | PFC (power factor correction) circuit of frequency converter |
| CN109041358A (en) * | 2018-06-06 | 2018-12-18 | 马鞍山明阳通信科技有限公司 | A kind of wireless street lamp micro-base station controller |
| CN111628555A (en) * | 2020-08-03 | 2020-09-04 | 佛山市万发科技有限公司 | Lithium battery charging circuit and PCB |
-
2014
- 2014-01-15 CN CN201420023625.5U patent/CN203747682U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105656302A (en) * | 2016-04-07 | 2016-06-08 | 湖州积微电子科技有限公司 | PFC (power factor correction) circuit of frequency converter |
| CN109041358A (en) * | 2018-06-06 | 2018-12-18 | 马鞍山明阳通信科技有限公司 | A kind of wireless street lamp micro-base station controller |
| CN111628555A (en) * | 2020-08-03 | 2020-09-04 | 佛山市万发科技有限公司 | Lithium battery charging circuit and PCB |
| CN111628555B (en) * | 2020-08-03 | 2020-11-17 | 佛山市万发科技有限公司 | Lithium battery charging circuit and PCB |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140730 Termination date: 20150115 |
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| EXPY | Termination of patent right or utility model |