CN1564449A - Smallest voltage active clamped single-phase A.C-D.C power factor correction transformer - Google Patents
Smallest voltage active clamped single-phase A.C-D.C power factor correction transformer Download PDFInfo
- Publication number
- CN1564449A CN1564449A CNA2004100178157A CN200410017815A CN1564449A CN 1564449 A CN1564449 A CN 1564449A CN A2004100178157 A CNA2004100178157 A CN A2004100178157A CN 200410017815 A CN200410017815 A CN 200410017815A CN 1564449 A CN1564449 A CN 1564449A
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- Prior art keywords
- diode
- inductance
- rectification circuit
- circuit
- main switch
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- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
-
- 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 converter includes rectification circuit, inductance, diode and main switch. One end of inductance is connected to output end of rectification circuit, and the other end of inductance is connected positive end of the diode. Cascaded circuit of main switch and resonant inductance is connected between connection point of inductance and diode and another output end of rectification circuit. Cascaded circuit of resonant inductance and clamping capacitance is cross connected on two ends of resonant inductance. Two ends of the said auxiliary switch are connected to third capacitance etc. Output capacitance is connected between negative diode and other output end of the rectification circuit. Features are: simple structure, restraining backward recovery of diode connected in inverted parallel, realization of soft switch and high efficiency of circuit. The converter is applicable to preceding stage of rectifier unit in distribution power source/
Description
Technology neck or
The present invention relates to power factor correcting converter, especially soft switch single phase alternating current (A.C.)-DC power factor correction converter.
Background technology
Present single phase alternating current (A.C.)-DC power factor correction converter as shown in Figure 1, it comprises the rectification circuit that is made of four diodes, inductance L, diode D2 and main switch S1, one end of inductance L links to each other with the output of rectification circuit, the other end links to each other with the anode of diode D2, inserts main switch S1 branch road between another output of the contact of inductance L and diode D2 and rectification circuit, is connected to output capacitance Co between another output of the negative terminal of diode D2 and rectification circuit.This single phase alternating current (A.C.)-DC power factor correction converter is applied to the input of global general-use power supply, can realize power factor correction, but circuit working is at the hard switching state, exist the reverse-recovery problems of diode, the devices switch loss is big, limit the raising of operating frequency, reduced circuit efficiency.
Summary of the invention
The purpose of this invention is to provide a kind of global general-use power supply input that is applied to, can suppress the reverse recovery of diode, switching loss is little, efficient height, safe and reliable minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter.
Minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter of the present invention comprises the rectification circuit that is made of four diodes, inductance, diode and main switch, one end of inductance links to each other with the output of rectification circuit, the other end links to each other with the anode of diode, between another output of the contact of inductance and diode and rectification circuit, insert the main switch branch road, between another output of the negative terminal of diode and rectification circuit, be connected to output capacitance, it is characterized in that main switch first electric capacity in parallel, diode second electric capacity in parallel, and at said main switch branch road series connection auxiliary switch, the circuit that is in series at the two ends of auxiliary switch the 3rd electric capacity in parallel and cross-over connection resonant inductance and clamping capacitance.
Minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter of the present invention is simple in structure, the reverse recovery of diode is inhibited, make in the circuit all device for power switching realize soft switch, thereby reduced the switching loss in the converter, improve circuit efficiency, help improving operating frequency, and then improve power density.The distinguishing feature of this converter is that power switch in the converter and the voltage stress on the diode equal output voltage.The circuit of this converter can be realized the output capacitance voltage control, can be used for prime rectifying device in the distributed power source.
Description of drawings
Fig. 1 is existing single phase alternating current (A.C.)-DC power factor correction converter;
Fig. 2 is minimum-voltage, active-clamp single phase alternating current (A.C.) of the present invention-DC power factor correction converter circuit diagram;
Fig. 3 is the control impuls sequential chart of switching device among the present invention;
Main voltage and current waveform when Fig. 4 is a circuit working of the present invention.
Embodiment
With reference to Fig. 2, minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter of the present invention comprises the rectification circuit D1 that is made of four diodes, inductance L, diode D2 and main switch S1, one end of inductance L links to each other with the output terminals A of rectification circuit, the other end links to each other with the anode of diode D2, between another output B of the contact of inductance L and diode D2 and rectification circuit, insert the series circuit of main switch S1 and auxiliary switch S3, and the circuit that the 3rd capacitor C 3 in parallel and cross-over connection resonant inductance L1 and clamping capacitance Cc are in series at the two ends of auxiliary switch S3, access output capacitance Co between another output B of the negative terminal of diode D2 and rectification circuit.
Describe the course of work of minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter in detail below in conjunction with Fig. 3, Fig. 4.For power factor correcting converter, in the positive and negative half-wave of a power frequency period of input current, its course of work is similarly, is that example is analyzed with a switch periods in the positive half wave just here.In work period, converter has 6 operating states at a switch.
Stage 1 (t
0-t
1):
At t
0Constantly, auxiliary switch S3 is turned off, diode D2 conducting, and under the effect of the reverse current of resonant inductance L1, the shunt capacitance C3 of auxiliary switch S3 is recharged, and the shunt capacitance C1 of main switch S1 is discharged, and the voltage at S1 two ends descends.To t
0Constantly, the voltage at S3 two ends is V
o, the C3 charging is finished, and the voltage at S3 two ends is converter output dc voltage V by clamp
oThe voltage at S1 two ends reduces to zero, and diode begins conduction in its body, and S1 is driven open-mindedly under zero voltage condition afterwards, makes S1 realize soft switch.In this stage, because the existence of inductance L 1, the reverse recovery of diode is inhibited.
Stage 2 (t1-t2):
t
1Constantly, the electric current among the diode D2 drops to zero, and diode reverse is turn-offed.The shunt capacitance C3 of resonant inductance L1 and capacitor C 2 and auxiliary switch S3 begins resonance, and C2 is recharged, and C3 is discharged.At this stage end, the C2 both end voltage is clamped at V
o, the voltage at S3 two ends drops to zero, and the resonance of L1 and C2, C3 stops.
Stage 3 (t2-t3):
Diode is at t in the body of auxiliary switch S3
2Constantly begin conducting, auxiliary switch S3 can be open-minded under no-voltage thus, makes S3 realize soft switch.From t
2Beginning, clamping capacitance begins to discharge by resonant inductance L1.
Stage 4 (t3-t4):
t
3Constantly, main switch S1 is turned off.Because the effect of main switch shunt capacitance, main switch turn-offs under zero voltage condition.In the input inductance current i
LEffect under, the shunt capacitance C1 of main switch S1 is recharged, capacitor C 2 is discharged, the voltage at diode D2 two ends reduces until being zero, the D2 conducting, this stage finishes.
Stage 5 (t4-t5):
t
4Constantly, diode D
2Conducting.Main switch S1 both end voltage is an output voltage V by clamp
o, the electric current of boost inductance L all flows to output by diode D2.Clamping capacitance Cc is still discharging by auxiliary switch S3, resonant inductance L1.
Stage 6 (t5-t6):
t
5Constantly, auxiliary switch S3 is turned off, and diode D2 keeps conducting.Electric current among the resonant inductance L1 has become negative sense at this moment, so the shunt capacitance C1 of main switch S1 is discharged, the shunt capacitance C3 of auxiliary switch S3 is recharged.Up to t
6Constantly, the voltage at S3 two ends is V
o, the C3 charging is finished, and the voltage at main switch S1 two ends drops to zero, and diode begins conducting in its body.t
6Constantly, repeat next switch periods.
Claims (1)
1. minimum-voltage, active-clamp single phase alternating current (A.C.)-DC power factor correction converter, it comprises the rectification circuit (D1) that is made of four diodes, inductance (L), diode (D2) and main switch (S1), one end of inductance (L) links to each other with the output (A) of rectification circuit, the other end links to each other with the anode of diode (D2), between another output (B) of the contact of inductance (L) and diode (D2) and rectification circuit, insert main switch (S1) branch road, between another output (B) of the negative terminal of diode (D2) and rectification circuit, be connected to output capacitance (Co), it is characterized in that main switch (S1) first electric capacity in parallel (C1), diode (D2) second electric capacity in parallel (C2), and at said main switch (S1) branch road series connection auxiliary switch (S3), the circuit that is in series at the two ends of auxiliary switch (S3) the 3rd electric capacity (C3) in parallel and cross-over connection resonant inductance (L1) and clamping capacitance (Cc).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100178157A CN1564449A (en) | 2004-04-13 | 2004-04-13 | Smallest voltage active clamped single-phase A.C-D.C power factor correction transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2004100178157A CN1564449A (en) | 2004-04-13 | 2004-04-13 | Smallest voltage active clamped single-phase A.C-D.C power factor correction transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1564449A true CN1564449A (en) | 2005-01-12 |
Family
ID=34479169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100178157A Pending CN1564449A (en) | 2004-04-13 | 2004-04-13 | Smallest voltage active clamped single-phase A.C-D.C power factor correction transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1564449A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931319B (en) * | 2009-06-08 | 2012-11-21 | 康舒科技股份有限公司 | Non-bridge type power factor correction circuit |
| CN103138605A (en) * | 2011-11-28 | 2013-06-05 | 何曙光 | Alternating current (AC) / direct current (DC) switching circuit of high frequency and low frequency |
-
2004
- 2004-04-13 CN CNA2004100178157A patent/CN1564449A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101931319B (en) * | 2009-06-08 | 2012-11-21 | 康舒科技股份有限公司 | Non-bridge type power factor correction circuit |
| CN103138605A (en) * | 2011-11-28 | 2013-06-05 | 何曙光 | Alternating current (AC) / direct current (DC) switching circuit of high frequency and low frequency |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |