CN1545192A - A single-stage power factor correcting circuit - Google Patents
A single-stage power factor correcting circuit Download PDFInfo
- Publication number
- CN1545192A CN1545192A CNA2003101122385A CN200310112238A CN1545192A CN 1545192 A CN1545192 A CN 1545192A CN A2003101122385 A CNA2003101122385 A CN A2003101122385A CN 200310112238 A CN200310112238 A CN 200310112238A CN 1545192 A CN1545192 A CN 1545192A
- Authority
- CN
- China
- Prior art keywords
- diode
- transformer
- input
- power factor
- main transformer
- 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.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P80/00—Climate change mitigation technologies for sector-wide applications
- Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier
Abstract
The invention relates to a single-stage power factor correcting (PFC) circuit, mainly including: rectifier, main transformer, auxiliary transformer, switch tube, input inductance, diodes, input capacitance, and nonpolar capacitance. It implements automatic PFC function in discontinuous voltage working mode of the input capacitance, and uses the main transformer as inductive storage component for balance power. The auxiliary transformer, two diodes and the nonpolar capacitance form a lossless buffer loop, which transmits buffered energy to output end, avoiding the loss caused by the routine loss buffer, and enhancing efficiency of the whole converter. Because of continuous input current, its power factor is high relative to traditional ones', and its content of harmonics is less, and it is especially applied to low-power application situations and simplifies the design of input filter.
Description
Technical field
The present invention relates to field of power electronics, more particularly, it is a kind of single-stage power factor correcting circuit.
Background technology
The extensive at present traditional often two-stage type power factor correction technology of circuit of power factor correction that adopts, but its circuit element is many, and cost is higher, and the circuit complexity, is not suitable for the middle low power application scenario.For reducing the cost of twin-stage circuit of power factor correction, people have proposed multiple single-level power factor correction technology in recent years.General single-stage power factor correcting circuit is to work in discontinuous conduction mode by the control inductive current, realizes power factor emendation function automatically.For balance input and output power, need to adopt a low frequency electric capacity to carry out storage power.Because input current is discontinuous, contains a large amount of Harmonics of Input, so need add electromagnetic interference suppression circuit at input, entire circuit is with regard to more complicated.
Summary of the invention
The present invention is a kind of single-stage power factor correcting circuit, since continuous input current, the single-level power factor height that power factor is traditional relatively, and harmonic content is less, is particularly useful for the low-power applications occasion, and it has simplified the design of input filter.
The present invention is to provide a kind of single-stage power factor correcting circuit, as shown in Figure 1, its circuit mainly comprises: rectifier bridge Q, two anti-violent change depressor T
1(main transformer) and T
2(auxiliary transformer), switching tube S, input inductance Ls, diode D
1, D
2, D
3, D
4, D
5With input capacitance C
1, polarity free capacitor C
3The negative electrode of rectifier bridge Q links to each other with the end of input inductance Ls, the other end of input inductance Ls respectively with diode D
1Negative electrode, input capacitance C
1An end, main transformer T
1The end of the same name and the D on former limit
2Negative electrode connect; The anode of rectifier bridge Q respectively with diode D
1Anode, input capacitance C
1The other end, source electrode and the auxiliary transformer T of switching tube S
2The end of the same name on former limit link to each other; Main transformer T
1The different name end on former limit link to each other diode D with the drain electrode of switching tube S
2Anode and diode D
3Negative electrode connect main transformer T
1The different name end on former limit and tie point and the diode D between the drain electrode of switching tube S
2, D
3Between tie point by polarity free capacitor C
3Be connected diode D
3Anode and auxiliary transformer T
2The different name end on former limit connect; Main transformer T
1The end of the same name of secondary and auxiliary transformer T
2The end of the same name of secondary connect, its tie point is connected with the negative electrode of output filter circuit again; Main transformer T
1The different name end and the diode D of secondary
4Anode connect auxiliary transformer T
2The different name end of secondary and diode D
5Anode connect; Diode D
4Negative electrode and diode D
5Negative electrode link to each other, its tie point is connected with the anode of output filter again.Wherein, main transformer T
1Be used for storage power; Input inductance Ls, diode D
1, input capacitance C
1Be used to realize power factor correction.
Single-stage power factor correcting circuit of the present invention is that the principle of duality by Circuit theory is carried out dualistic transformation to the circuit of power factor correction of routine and obtained.This circuit in discontinuous conduction mode, is realized power factor emendation function by the control capacitance voltage power supply automatically.Be balance input and output power, the present invention adopts inverse-excitation type transformer T
1As perceptual energy-storage travelling wave tube; For reducing switch stress, the present invention has adopted a kind of non-loss buffer, has absorbed due to voltage spikes effectively, has also improved the efficient of converter simultaneously, and the loop of this non-loss buffer is by auxiliary transformer T
2, diode D
2, D
3And polarity free capacitor C
3Constitute.
The invention has the advantages that the single-level power factor height that its power factor is traditional relatively, harmonic content is less, its non-loss buffer arrives output to the power transfer of buffering, overcome the conventional loss that buffer brings that diminishes, improve the efficient of whole converter, simplified the design of input filter.
Description of drawings
Fig. 1 is a circuit diagram of the present invention;
Fig. 2 is a course of work circuit diagram of the present invention;
Fig. 3 is the C of the present invention in two switch periods
1And T
1Voltage oscillogram;
Fig. 4 is the present invention's capacitor C under the power frequency pattern
1Voltage oscillogram.
Among Fig. 4: the voltage waveform after the rectification of 1-capacitance voltage waveform 2-input voltage
Embodiment
Below in conjunction with accompanying drawing the present invention is further described:
Fig. 2 has provided course of work circuit diagram of the present invention, and in a switch periods, its course of work is as follows:
t
0～t
1, as Fig. 2 (a), switching tube S turn-offs.Input is to capacitor C
1Charge C
1Voltage linear rises.The last cycle is stored in main transformer T
1Energy pass to secondary and to the output transmission.Because T
1The existence of leakage inductance, main transformer T
1Primary current non-vanishing.The electric current flow circuits is T
1-C
3-D
2, electric current is to C
3Charge, the energy on the leakage inductance is transferred to C
3On.Simultaneously, last one-period is stored in auxiliary transformer T
2On energy pass to output by secondary.
t
1～t
2, as Fig. 2 (b), switching tube S is open-minded.Capacitor C
1Pass through T
1-S discharges.T
1Former limit on electric current linear rise T
1Play the energy storage effect.Simultaneously, C
3On energy pass through C
3-S-T
2T is passed in the loop
2Secondary.
t
2～T is as Fig. 2 (c).Capacitor C
1Discharge off, capacitor C
1Last voltage is 0.Electric current is along loop T
1-S-D
1Continue to flow D
1Play the fly-wheel diode effect.
Fig. 3 has provided C shown in Figure 1
1And T
1The oscillogram of voltage, V
C1Zero passage in each switch periods.V
C1Voltage waveform under the power frequency pattern is seen Fig. 4.If V in each switch periods
C1Mean value be linked to be curve, just just be the voltage waveform after the input voltage rectification.
Be power factor correction ability and the voltage-regulation performance of verifying single-stage power factor correcting circuit of the present invention, we have carried out relevant experiment, and adopt the current-mode control technology that this circuit is controlled.Experimental result shows that power factor and efficient reach 98% and 75% respectively.With respect to traditional single-stage pfc circuit, the single-stage power factor correcting circuit of this invention has two big advantages: the one, and the discontinuity capacitance voltage operation mode is realized High Power Factor; The 2nd, transformer has replaced storage capacitor to realize the low frequency energy storage.Because input current works in the continuous current pattern, has reduced EMI and THD, increases with respect to traditional single-stage pfc converter power factor, can be applied in some low-power applications occasions.
Claims (3)
1. a single-stage power factor correcting circuit mainly comprises: rectifier bridge Q, main transformer T
1, auxiliary transformer T
2, switching tube S, input inductance Ls, diode D
1, D
2, D
3, D
4, D
5With input capacitance C
1, polarity free capacitor C
3, it is characterized in that main transformer T
1Be used for storage power, input inductance Ls, diode D
1With input capacitance C
1Be used to realize the merit factor correcting, the negative electrode of described rectifier bridge Q links to each other with the end of input inductance Ls, the other end of described input inductance Ls respectively with diode D
1Negative electrode, input capacitance C
1An end, main transformer T
1The end of the same name and the D on former limit
2Negative electrode connect; The anode of rectifier bridge Q respectively with diode D
1Anode, input capacitance C
1The other end, source electrode and the auxiliary transformer T of switching tube S
2The end of the same name on former limit link to each other; Main transformer T
1The different name end on former limit link to each other diode D with the drain electrode of switching tube S
2Anode and diode D
3Negative electrode connect main transformer T
1The different name end on former limit and tie point and the diode D between the drain electrode of switching tube S
2, D
3Between tie point by polarity free capacitor C
3Be connected diode D
3Anode and auxiliary transformer T
2The different name end on former limit connect; Main transformer T
1The end of the same name of secondary and auxiliary transformer T
2The end of the same name of secondary connect, its tie point is connected with the negative electrode of output filter circuit again; Main transformer T
1The different name end and the diode D of secondary
4Anode connect auxiliary transformer T
2The different name end of secondary and diode D
5Anode connect; Diode D
4Negative electrode and diode D
5Negative electrode link to each other, its tie point is connected with the anode of output filter again.
2. a kind of novel single-stage power factor correcting circuit according to claim 1 is characterized in that described auxiliary transformer T2, diode D2, D3 and polarity free capacitor C3 have constituted the non-loss buffer loop.
3. a kind of novel single-stage power factor correcting circuit according to claim 1 is characterized in that, described main transformer T
1With auxiliary transformer T
2Adopt anti-violent change depressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101122385A CN1315248C (en) | 2003-11-21 | 2003-11-21 | A single-stage power factor correcting circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2003101122385A CN1315248C (en) | 2003-11-21 | 2003-11-21 | A single-stage power factor correcting circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1545192A true CN1545192A (en) | 2004-11-10 |
| CN1315248C CN1315248C (en) | 2007-05-09 |
Family
ID=34336451
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2003101122385A Expired - Fee Related CN1315248C (en) | 2003-11-21 | 2003-11-21 | A single-stage power factor correcting circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1315248C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438286C (en) * | 2006-06-09 | 2008-11-26 | 燕山大学 | Dual-tube dual-forward-excitation boosting type single-stage power factor correction circuit |
| CN108717278A (en) * | 2018-04-03 | 2018-10-30 | 华南理工大学 | A kind of multi-channel parallel real-time digital for PFC rectification modules judges implementation method |
| WO2022108107A1 (en) * | 2020-11-18 | 2022-05-27 | 삼성전자(주) | Display device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5790389A (en) * | 1996-05-31 | 1998-08-04 | Virginia Power Technologies, Inc. | Consolidated soft-switching AC/DC converters |
| US5982638A (en) * | 1997-10-31 | 1999-11-09 | Astec International Limited | Single stage power converter with regenerative snubber and power factor correction |
| US6118673A (en) * | 1998-06-01 | 2000-09-12 | Virginia Power Technologies, Inc. | Single-stage AC/DC converters with saturable conductor PFC |
| US6317341B1 (en) * | 2000-11-09 | 2001-11-13 | Simon Fraidlin | Switching circuit, method of operation thereof and single stage power factor corrector employing the same |
-
2003
- 2003-11-21 CN CNB2003101122385A patent/CN1315248C/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100438286C (en) * | 2006-06-09 | 2008-11-26 | 燕山大学 | Dual-tube dual-forward-excitation boosting type single-stage power factor correction circuit |
| CN108717278A (en) * | 2018-04-03 | 2018-10-30 | 华南理工大学 | A kind of multi-channel parallel real-time digital for PFC rectification modules judges implementation method |
| WO2022108107A1 (en) * | 2020-11-18 | 2022-05-27 | 삼성전자(주) | Display device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1315248C (en) | 2007-05-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110932557A (en) | High-gain quasi-resonant DC-DC converter based on voltage doubling rectifying circuit | |
| CN100379132C (en) | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter | |
| CN203775058U (en) | LED driving power supply based on single-end flyback transformer leakage inductor energy utilization | |
| CN102497108A (en) | LLC resonance type push-pull forward conversion topology | |
| CN1866704A (en) | Dual-tube dual-forward-excitation boosting type single-stage power factor correction circuit | |
| CN103595258A (en) | Boost type soft switching resonant converter and frequency fixing control method thereof | |
| CN106787757A (en) | A kind of CLTCL resonance DCs converter | |
| CN103208927A (en) | Disconnecting soft switching high-boost direct-current converter and control method thereof | |
| CN1305210C (en) | DC-DC power transfer device with zero voltage soft switch | |
| CN101604916A (en) | Based on the pi-type auxiliary network Zero-voltage switch full-bridge direct current converter | |
| CN103683952B (en) | A kind of integration in parallel connection formula Buck-Flyback power factor correction pfc converter topology | |
| Ghazali et al. | Efficient soft switching single-stage PFC for low-power applications | |
| CN1929278B (en) | Cascading multiple electrical level double decompression semi-bridge converter | |
| Kumar et al. | Performance analysis of coupled inductor based ripple free boost PFC AC-DC LED driver | |
| CN2385469Y (en) | Power supply device for phase-shift resonance switch | |
| CN1734904A (en) | Single switch double output booster converter | |
| CN2854919Y (en) | High frequency switch power circuit | |
| CN1315248C (en) | A single-stage power factor correcting circuit | |
| CN109546861B (en) | Method for dynamically adjusting voltage conversion rate of LLC resonant cavity | |
| CN204652716U (en) | A kind of powerful two-stage LED drive power | |
| CN103762839A (en) | Magnetic coupling type single-phase high-gain bridge-free power factor correction circuit | |
| Sebastian et al. | A new input current shaping technique using converters operating in continuous conduction mode | |
| CN103296896A (en) | Soft switch isolation type boost direct current converter and control method thereof | |
| CN102075078A (en) | Low-input voltage bridgeless staggered voltage-multiplying power factor correction device | |
| CN205105094U (en) | Promote buck output voltage's circuit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN MAOSHUO POWER SUPPLY TECHNOLOGY CO., LTD Free format text: FORMER OWNER: SOUTH CHINA UNIVERSITY OF TECHNOLOGY ADDRESS Effective date: 20081121 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20081121 Address after: Shenzhen City, Nanshan District province Guangdong industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee after: Shenzhen MoSo Power Supply Technology Co., Ltd. Address before: No. five, 381 mountain road, Guangzhou, Guangdong, Tianhe District Patentee before: South China University of Technology |
|
| ASS | Succession or assignment of patent right |
Owner name: SHENZHEN MAOSHUO POWER SUPPLY TECHNOLOGY CO., LTD. Free format text: FORMER OWNER: SOUTH CHINA UNIVERSITY OF TECHNOLOGY Effective date: 20081121 |
|
| ASS | Succession or assignment of patent right |
Owner name: SOUTHERN CHINA UNIVERSITY OF TECHNOLOGY Free format text: FORMER OWNER: SHENZHEN MOSO POWER SUPPLY TECHNOLOGY CO., LTD. Effective date: 20100715 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 518108 6/F, GUANWAIXIAOBAIWANGSANGTAI INDUSTRIAL PARK, SONGBAI ROAD, NANSHAN DISTRICT, SHENZHEN CITY, GUANGDONG PROVINCE TO: 510640 NO.381, WUSHAN ROAD, TIANHE DISTRICT, GUANGZHOU CITY, GUANGDONG PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20100715 Address after: 510640 Tianhe District, Guangdong, No. five road, No. 381, Patentee after: South China University of Technology Address before: Shenzhen Nanshan District City, Guangdong province 518108 industrial park outside the small pine Tai Bai Lu Bai mang mulberry 6 layer Patentee before: Shenzhen MoSo Power Supply Technology Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070509 Termination date: 20151121 |
|
| EXPY | Termination of patent right or utility model |