CN106936323A - AC-DC is without harmonic synchronous fairing - Google Patents
AC-DC is without harmonic synchronous fairing Download PDFInfo
- Publication number
- CN106936323A CN106936323A CN201511033931.2A CN201511033931A CN106936323A CN 106936323 A CN106936323 A CN 106936323A CN 201511033931 A CN201511033931 A CN 201511033931A CN 106936323 A CN106936323 A CN 106936323A
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- China
- Prior art keywords
- resistance
- poles
- triode
- pin
- switching tube
- 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.)
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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
- H02M7/02—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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
-
- 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
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/21—Conversion of ac power input into dc 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
- H02M7/217—Conversion of ac power input into dc 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
- H02M7/2173—Conversion of ac power input into dc 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 in a biphase or polyphase circuit arrangement
Abstract
A kind of AC-DC for replacing full-bridge rectifier diode AC inversion of direct current switching process is without harmonic synchronous fairing.Detection by comparison amplifier to AC sine wave phase, the break-make of drive control on-state milliohm level electronic switch, two electronic switches conducting of corresponding phase positive half cycle is driven when meeting positive half cycle, two electronic switches conducting of corresponding phase negative half period is driven when meeting negative half period, realize synchronous rectification, harmonic wave is not produced not only, while improving the efficiency of AC-DC conversions, reduces rectifier loss.
Description
Technical field
The present invention relates to it is a kind of replace full-bridge rectifier diode pair AC-DC fairing, especially
Detection by comparison amplifier to AC sine wave phase, drive control electronic switch is exported by corresponding phase
Positive and negative half cycle, realizes synchronous rectification, and harmonic wave is not produced and the AC-DC of rectifier loss is reduced without harmonic synchronous
Fairing.
Background technology
At present, known utility grid should provide the stable sine wave of amplitude and frequency-invariant in the ideal case
Voltage, and power network current should be identical with voltage-phase, so, has unity power factor in power network side.
Due to the popularization of the high speed development and power electronic equipment of power electronic devices, low-voltage rectified current loss of energy
Also it is more and more, the harmonic pollution of utility grid is on the rise.Because power electronic equipment from
While power network absorbs active power and reactive power, a large amount of harmonic currents also are injected to power network, in power network resistance
Anti- upper generation harmonic wave pressure drop, line loss increase, and the distortion of line voltage is caused, the power supply quality of power network is serious
Decline, the also operation to other power electronic equipments on same power network has undesirable effect.In order to ensure electricity
All formulate corresponding standard to limit the harmonic wave electricity of harmonic source injection power network in the power supply quality of net, countries in the world
Stream, with this by the harmonic voltage control of power network in allowed limits.Standard GB/T/T14549-1993《Electricity
Can quality utility network harmonic wave》Harmonic current components (root-mean-square value) to injecting power network points of common connection permit
Perhaps value and resulting mains by harmonics voltage (phase voltage) limit value have made the regulation of hardness.Exchange input electricity
Repoussage stream is followed by a big filter condenser, although input voltage is sinusoidal waveform, but due to circuit right and wrong
The combination of linear element and energy-storage travelling wave tube, so its AC input current is not sine wave, but a kind of pulse
Waveform.The input current of pulse type contains substantial amounts of harmonic component, and its reactive component is substantially higher hamonic wave,
Such as it is single-phase can not be for control rectifying circuit, 3 subharmonic amplitudes are about the 95% of first harmonic magnitude, 5 subharmonic
About 70%, 7 subharmonic are about 45%, and 9 subharmonic are about 25%.The generation of higher hamonic wave is greatly reduced
The power factor of input AC side.Because in power electronic equipment, rectifier (AC-DC converter) is accounted for
There is larger ratio, and rectifier is one of main harmonic source, and the harmonic wave for suppressing rectifier generation is to subtract
The important measures of light harmonic pollution in electric power net.This requires to reduce harmonic component, raising electricity in the output of rectifier
Net the power factor of side.At present in our a domestic or blank, also without one kind without humorous fairing
Substitute traditional PN junction rectifier.
The content of the invention
In order to overcome a large amount of current harmonics components of existing rectifier to blow back into power network, the harmonic wave to power network is caused
Pollution, harmonic current flows through line impedance and produces harmonic wave pressure drop, makes to be originally the power network input voltage of sine wave
Waveform be distorted, it is also possible that circuit malfunctions are even damaged, harmonic wave causes what it flowed through to lead to harmonic wave
Line is overheated, distribution transformer overheat, causes the center line in power network LC resonance, three-phase circuit because of 3 subharmonic
Be superimposed and overheat etc., the present invention provides a kind of AC-DC without harmonic synchronous fairing, and the AC-DC is without harmonic wave
Synchronous rectificating device can not only complete the switching process of AC-DC, and integrated small volume, can be straight
The overall power consumption that circuit is reduced for rectifier is taken over, the generation without harmonic wave improves AC-DC's
Conversion efficiency.
The technical solution adopted for the present invention to solve the technical problems is：In circuit of synchronous rectification, by terminal 1,
2 input ACs electricity, through resistance R1, R2 partial pressure, diode D1, D2 voltage is spacing, for comparison amplifier
Two inputs of comparison amplifier in IC2.Positive half cycle is met, 1 pin of comparison amplifier IC2-1 is in low electricity
Position, triode V2 and V6 ends, triode V1 cut-offs, and triode V5 is by resistance R15, R13 to base stage
Power supply conducting, switching tube Q1 conductings, switching tube Q3 cut-offs；7 pin of comparison amplifier IC2-2 are in electricity high
Position, triode V8 and V12 is turned on, triode V7 conductings, triode V11 cut-offs, switching tube Q2 cut-offs,
Switching tube Q4 turn on, electric current by power supply one end enter terminal 1, switching tube Q1, terminal 3, through load return
To terminal 4, switching tube Q4, terminal 2 to the power supply other end.Meet negative half period, the 1 of comparison amplifier IC2-1
Pin is in high potential, and triode V2 and V6 is turned on, triode V1 conductings, triode V5 cut-offs, switching tube
Q1 ends, switching tube Q3 conductings；7 pin of comparison amplifier IC2-2 are in low potential, triode V8 and V12
Cut-off, triode V7 cut-offs, triode V11 conductings, switching tube Q2 conductings, switching tube Q4 cut-offs, electricity
Stream by the power supply other end into terminal 2, switching tube Q2, terminal 3, through load be back to terminal 4, switching tube
Q3, terminal 1 are to power supply one end.By resistance R9, R29, R10 partial pressure for comparison amplifier IC1 provides state
Detection signal, diode D3 and electrochemical capacitor C constitutes comparison amplifier IC1, IC2 current supply circuit, completes
The switching process of AC-DC.
The beneficial effects of the invention are as follows, electronic switch rectifier system is controlled using IC, harmonic wave is not produced, will not
Harmonic pollution and line voltage is caused to distort to supply network, it is ensured that the power factor of power supply grid side will not
Change, do not only reach the purpose for improving conversion efficiency, while economize on electricity.
Brief description of the drawings
The present invention is further described with reference to the accompanying drawings and examples.
Accompanying drawing is circuit theory diagrams of the invention
Accompanying drawing：1~4 terminal, R1~R29 resistance, C electrochemical capacitors, D1~D3 diodes, V1~V12 tri-
Pole pipe, Q1~Q4 switching tubes, IC1, IC2-1, IC2-2 comparison amplifier.
Specific embodiment
In figure, terminal 1, resistance R1 one end, the D poles of switching tube Q1 are extremely connected with the D of Q3, switch
The S poles of pipe Q1, the e poles of triode V1, resistance R4 one end, resistance R6 one end, resistance R11 one end,
Resistance R15 one end, the S poles of switching tube Q2, the e poles of triode V7, resistance R17 one end, resistance R19
One end, resistance R21 one end, resistance R25 one end, diode D3 positive poles, resistance R9 one end and terminal 3
It is connected, the G poles of switching tube Q1, the c poles of triode V1 are connected with resistance R3 one end, the b of triode V1
Pole, the resistance R4 other ends, resistance R5 one end are extremely connected with the c of triode V3, the resistance R5 other ends with
The c of triode V2 is extremely connected, and the b poles of triode V2 are connected with resistance R7 one end, the e of triode V3
Pole is connected with resistance R12 one end, the c poles of the b poles, the resistance R6 other ends and triode V4 of triode V3
It is connected, the b poles of triode V4 are connected with resistance R8 one end, the resistance R8 other ends, comparison amplifier IC1
1 pin be connected with resistance R26 one end, 8 pin of comparison amplifier IC1, diode D3 negative poles, compare and put
8 pin of big device IC2-1 are connected with electrochemical capacitor C positive poles, and 3 pin of comparison amplifier IC1, resistance R9 are another
One end is connected with resistance R29 one end, the resistance R29 other ends, resistance R10 one end and comparison amplifier IC1
2 pin be connected, 4 pin, the resistance R10 other ends, electrochemical capacitor C negative poles, three of comparison amplifier IC1
The e poles of pole pipe V4, the e poles of triode V6, the e poles of triode V2, the e poles of triode V5, electricity
S poles, the S poles of switching tube Q4, resistance R16 one end, the triode V8 of the resistance R3 other ends and switching tube Q3
E poles, the e poles of triode V11, the e poles of triode V10, the e poles of triode V12, compare and put
4 pin of big device IC2-2, resistance R27 one end, resistance R28 one end are connected with terminal 4, switching tube Q3's
G poles, the c poles of triode V5 are connected with the resistance R11 other ends, and the b poles of triode V5, resistance R12 are another
One end is connected with resistance R13 one end, and the resistance R13 other ends, the c poles of triode V6 and resistance R15 are another
End is connected, and the b poles of triode V6 are connected with resistance R14 one end, and the resistance R14 other ends, resistance R7 are another
One end is connected with 1 pin of comparison amplifier IC2-1, the resistance R1 other ends, diode D1 negative poles, two poles
Pipe D2 positive poles, the resistance R27 other ends, 2 pin of comparison amplifier IC2-1 and comparison amplifier IC2-2's
5 pin are connected, and 3 pin of comparison amplifier IC2-1,6 pin of comparison amplifier IC2-2, resistance R28 are another
End, resistance R2 one end, diode D1 positive poles are connected with diode D2 negative poles, the resistance R2 other ends, end
Son 2, the D poles of switching tube Q2 is extremely connected with the D of switching tube Q4, the G poles of switching tube Q2, triode V7
C poles be connected with the resistance R16 other ends, the b poles of triode V7, the resistance R17 other ends, resistance R18
One end is extremely connected with the c of triode V9, and the resistance R18 other ends are extremely connected with the c of triode V8, three poles
The b poles of pipe V8 are connected with resistance R20 one end, and the e poles of triode V9 are connected with resistance R22 one end, and three
The b poles of pole pipe V9, the resistance R19 other ends are extremely connected with the c of triode V10, the b poles of triode V10
It is connected with the resistance R26 other ends, the G poles of switching tube Q4, the c poles of triode V11 and resistance R21 are another
End is connected, and the b poles of triode V11, the resistance R22 other ends are connected with resistance R23 one end, resistance R23
The other end, the resistance R25 other ends are extremely connected with the c of triode V12, the b poles of triode V12 and resistance
R24 one end is connected, the 7 pin phases of the resistance R24 other ends, the resistance R20 other ends and comparison amplifier IC2-2
Even.
Claims (1)
1. a kind of AC-DC is without harmonic synchronous fairing, in rectification circuit, by terminal 1 and 2, resistance R1 and R2,
2 two comparison amplifiers of IC, positive half cycle, triode V2 and V6, triode V1 and V5 are to opening
Close pipe Q1 and Q3, negative half period, triode V8 and V12, triode V7 and V11 to switching tube Q2 and Q4,
Composition is sampled, compares amplification and drive control loop, it is characterized in that：Terminal 1, resistance R1 one end, switch
The D poles of pipe Q1 are extremely connected with the D of Q3, the S poles of switching tube Q1, the e poles of triode V1, resistance R4
One end, resistance R6 one end, resistance R11 one end, resistance R15 one end, the S poles of switching tube Q2, three poles
The e poles of pipe V7, resistance R17 one end, resistance R19 one end, resistance R21 one end, resistance R25 one end,
Diode D3 positive poles, resistance R9 one end are connected with terminal 3, the G poles of switching tube Q1, the c of triode V1
Pole is connected with resistance R3 one end, the b poles of triode V1, the resistance R4 other ends, resistance R5 one end and three
The c of pole pipe V3 is extremely connected, and the resistance R5 other ends are extremely connected with the c of triode V2, the b of triode V2
Pole is connected with resistance R7 one end, and the e poles of triode V3 are connected with resistance R12 one end, the b of triode V3
Pole, the resistance R6 other ends are extremely connected with the c of triode V4, b poles and resistance R8 one end of triode V4
It is connected, the resistance R8 other ends, 1 pin of comparison amplifier IC1 are connected with resistance R26 one end, compare amplification
8 pin of device IC1, diode D3 negative poles, 8 pin of comparison amplifier IC2-1 and electrochemical capacitor C positive pole phases
Even, 3 pin of comparison amplifier IC1, the resistance R9 other ends are connected with resistance R29 one end, and resistance R29 is another
One end, resistance R10 one end are connected with 2 pin of comparison amplifier IC1,4 pin of comparison amplifier IC1,
The resistance R10 other ends, electrochemical capacitor C negative poles, the e poles of triode V4, e poles, three of triode V6
The e poles of pole pipe V2, the S poles of the e poles, the resistance R3 other ends and switching tube Q3 of triode V5, switch
The S poles of pipe Q4, resistance R16 one end, the e poles of triode V8, the e poles of triode V11, triode
The e poles of V10, the e poles of triode V12,4 pin of comparison amplifier IC2-2, resistance R27 one end, electricity
Resistance R28 one end is connected with terminal 4, and the G poles of switching tube Q3, the c poles of triode V5 and resistance R11 are another
One end is connected, and the b poles of triode V5, the resistance R12 other ends are connected with resistance R13 one end, resistance R13
The other end, the c poles of triode V6 are connected with the resistance R15 other ends, b poles and the resistance R14 of triode V6
One end is connected, and the resistance R14 other ends, the resistance R7 other ends are connected with 1 pin of comparison amplifier IC2-1,
The resistance R1 other ends, diode D1 negative poles, diode D2 positive poles, the resistance R27 other ends, compare amplification
2 pin of device IC2-1 are connected with 5 pin of comparison amplifier IC2-2,3 pin of comparison amplifier IC2-1,
6 pin of comparison amplifier IC2-2, the resistance R28 other ends, resistance R2 one end, diode D1 positive poles with
Diode D2 negative poles are connected, the resistance R2 other ends, terminal 2, the D poles of switching tube Q2 and switching tube Q4's
D is extremely connected, and the G poles of switching tube Q2, the c poles of triode V7 are connected with the resistance R16 other ends, triode
The b poles of V7, the resistance R17 other ends, resistance R18 one end are extremely connected with the c of triode V9, resistance R18
The other end is extremely connected with the c of triode V8, and the b poles of triode V8 are connected with resistance R20 one end, three poles
The e poles of pipe V9 are connected with resistance R22 one end, the b poles of triode V9, the resistance R19 other ends and three poles
The c of pipe V10 is extremely connected, and the b poles of triode V10 are connected with the resistance R26 other ends, the G of switching tube Q4
Pole, the c poles of triode V11 are connected with the resistance R21 other ends, the b poles of triode V11, resistance R22
The other end is connected with resistance R23 one end, the resistance R23 other ends, the resistance R25 other ends and triode V12
C extremely be connected, the b poles of triode V12 are connected with resistance R24 one end, the resistance R24 other ends, resistance
The R20 other ends are connected with 7 pin of comparison amplifier IC2-2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511033931.2A CN106936323A (en) | 2015-12-29 | 2015-12-29 | AC-DC is without harmonic synchronous fairing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511033931.2A CN106936323A (en) | 2015-12-29 | 2015-12-29 | AC-DC is without harmonic synchronous fairing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106936323A true CN106936323A (en) | 2017-07-07 |
Family
ID=59443886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511033931.2A Pending CN106936323A (en) | 2015-12-29 | 2015-12-29 | AC-DC is without harmonic synchronous fairing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106936323A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11187667A (en) * | 1997-12-17 | 1999-07-09 | Seiko Epson Corp | Power device, power generator and electronic unit |
| US5946207A (en) * | 1997-08-04 | 1999-08-31 | U.S. Philips Corporation | Power supply having a synchronous rectifier circuit for improved switching timing |
| WO2000060730A1 (en) * | 1999-04-07 | 2000-10-12 | Semiconductor Components Industries, L.L.C. | Synchronous rectifier and method of operation |
| CN1289476A (en) * | 1998-12-02 | 2001-03-28 | 精工爱普生株式会社 | Power supply device, power supply method, portable electronic apparatus, and electronic timepiece |
| JP2001161072A (en) * | 1999-11-30 | 2001-06-12 | Fuji Xerox Co Ltd | Synchronous rectifying circuit and power supply unit |
| CN203326909U (en) * | 2013-06-24 | 2013-12-04 | 冠捷显示科技（厦门）有限公司 | Operation amplifier or comparator-controlled fly-back synchronous rectification circuit and fly-back power supply thereof |
| CN204633623U (en) * | 2015-04-01 | 2015-09-09 | 深圳市金威源科技股份有限公司 | A kind of precise rectification circuit |
-
2015
- 2015-12-29 CN CN201511033931.2A patent/CN106936323A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5946207A (en) * | 1997-08-04 | 1999-08-31 | U.S. Philips Corporation | Power supply having a synchronous rectifier circuit for improved switching timing |
| JPH11187667A (en) * | 1997-12-17 | 1999-07-09 | Seiko Epson Corp | Power device, power generator and electronic unit |
| CN1289476A (en) * | 1998-12-02 | 2001-03-28 | 精工爱普生株式会社 | Power supply device, power supply method, portable electronic apparatus, and electronic timepiece |
| WO2000060730A1 (en) * | 1999-04-07 | 2000-10-12 | Semiconductor Components Industries, L.L.C. | Synchronous rectifier and method of operation |
| JP2001161072A (en) * | 1999-11-30 | 2001-06-12 | Fuji Xerox Co Ltd | Synchronous rectifying circuit and power supply unit |
| CN203326909U (en) * | 2013-06-24 | 2013-12-04 | 冠捷显示科技（厦门）有限公司 | Operation amplifier or comparator-controlled fly-back synchronous rectification circuit and fly-back power supply thereof |
| CN204633623U (en) * | 2015-04-01 | 2015-09-09 | 深圳市金威源科技股份有限公司 | A kind of precise rectification circuit |
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