CN1286521A - Three-level DC converter of zero-voltage switch with clamping diode - Google Patents
Three-level DC converter of zero-voltage switch with clamping diode Download PDFInfo
- Publication number
- CN1286521A CN1286521A CN00119044A CN00119044A CN1286521A CN 1286521 A CN1286521 A CN 1286521A CN 00119044 A CN00119044 A CN 00119044A CN 00119044 A CN00119044 A CN 00119044A CN 1286521 A CN1286521 A CN 1286521A
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- 238000004804 winding Methods 0.000 claims abstract description 8
- 239000003990 capacitor Substances 0.000 abstract description 7
- 230000010355 oscillation Effects 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000003071 parasitic effect Effects 0.000 description 1
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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
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Abstract
A three-level DC converter is composed of input voltage dividing capacitors, inverting bridge, isolating transfurmer, rectifier and filter, and features that a clamper is introduced at the intersection of primary winding of isolating transformer and resonant inductor. Two clamping diodes are respectively connected between two switch transistor of a pair in inverting bridge. Its advantages are zero-voltage switching of switch transistor, no voltage oscillation caused by backward restoration of rectifying transistor, low voltage stress of output rectifying transistor, and no backward restoring loss of output rectifying transistor.
Description
Involved in the present invention is a kind of transformation of electrical energy device, especially DC converter.
Along with the development of power electronic technology, more and more higher to the requirement of transformation of electrical energy device, particularly more and more higher to the requirement of input power factor.Through three-phase activity coefficient adjustment (Power FactorCorrection, PFC) output of back circuit generally can reach 760～800V, sometimes even reach 1000V, the switch tube voltage of the DC converter of level quota after this just requires to improve makes to be difficult to the suitable power switch pipe of selection, and, in order to reduce the volume and weight of converter, must improve switching frequency, the soft switch (being no-voltage or Zero Current Switch) that this will realistic existing switching tube is to reduce switching loss.J.Remes Pinheiro and Ivo Barbi, " The three-level zvs pwm converter-A newconcept in high-voltage dc-to-dc conversion; " IEEE IECON, 1992, PP.173-178 discloses a kind of three-level DC converter of zero-voltage switch.It utilizes junction capacitance and the leakage inductance of transformer or the zero voltage switch that resonant inductance is realized switching tube of switching tube; And the voltage stress of switching tube is input direct voltage half, can find suitable switching tube.But the reverse recovery of the secondary rectifier diode of this converter makes the secondary commutating voltage have due to voltage spikes, thereby the loss of rectifier diode is bigger, and will bear very high due to voltage spikes.
The objective of the invention is to defective, develop a kind of three-level zero-voltage switch DC convertor,, reduce the loss on the rectifier diode, improve conversion efficiency with effective removal secondary commutating voltage spike with clamp diode at above-mentioned converter.
Band clamp diode three-level DC converter of zero-voltage switch of the present invention is made up of input dividing potential drop electric capacity, inverter bridge, isolating transformer, rectifier bridge and filter circuit, clamp circuit.Be characterized in drawing the centre that two clamp diodes are connected to every pair of switching tube of the upper and lower two pairs of switching tubes of inverter bridge respectively in the former limit winding and the resonant inductance intersection point part of transformer.
Accompanying drawing 1-8. several embodiment electrical block diagrams of the present invention
Accompanying drawing 9. main waveform schematic diagrames of the present invention.
The equivalent circuit structure schematic diagram of each switch mode of accompanying drawing 10-19..
1 narration circuit of the present invention is formed structure with reference to the accompanying drawings, and DC converter of the present invention still is made of input dividing potential drop electric capacity 1, inverter bridge 2, isolating transformer 3, rectification and filter circuit 4, and its characteristics are at isolating transformer T
rFormer limit winding and resonant inductance L
rThe intersection point place draw two clamp diodes 5, wherein diode D
7Negative electrode be connected to advance pipe Q
1Source electrode (or the pipe Q that lags behind
2Drain electrode), diode D
8Anode be connected to the pipe Q that lags behind
3Source electrode (or advance pipe Q
4Drain electrode).The C of dividing potential drop electric capacity 1
D1And C
D2Its capacity is equal, and very big, and their voltage is input supply voltage V
InHalf, that is: V
Cd1=V
Cd2=V
In/ 2; C
1～C
4, D
1～D
4Be respectively Q
1～Q
4Junction capacitance (or outside additional capacitor) and parasitic diode; Advance pipe Q
1And Q
4Realize zero voltage switch by filter inductance and resonant inductance, pipe Q lags behind
2And Q
3Then realize zero voltage switch, thereby on switching tube, do not have switching loss, improve conversion efficiency by the energy of resonant inductance.In the inverter bridge circuit, also be added with continued flow tube D
5, D
6, and at D
5Negative electrode and D
6Anode between cross-over connection connect capacitor C
SS, its role is to the switching process of two pairs of switching tubes is coupled together.When the converter steady operation, capacitor C
SSOn voltage constant be V
In/ 2.
Be example with accompanying drawing 1 below, in conjunction with the accompanying drawings 9～19 the narration concrete operation principle of the present invention, by accompanying drawing 9 as can be known whole converter 18 kinds of switch mode are arranged in a switch periods, respectively with [t
0[t constantly],
0, t
1], [t
1, t
2], [t
2, t
3], [t
3, t
4], [t
4, t
5], [t
5, t
6], [t
6, t
7], [t
7, t
8], [t
8, t
9], [t
9, t
10], [t
10, t
11], [t
11, t
12], [t
12, t
13], [t
13, t
14], [t
14, t
15], [t
15, t
16], [t
16, t
17], [t
17, t
18] (seeing accompanying drawing 9), wherein, [t
0, t
9] be the preceding half period, [t
9, f
18] be the later half cycle.Below the working condition of each switch mode is made a concrete analysis of 1. switch mode 0[t
0Constantly] [corresponding to accompanying drawing 10]
At t
0Before very little quarter, Q
1And Q
2Conducting, output rectifying tube D
R1Conducting, D
R2End.2. switch mode 1[t
0, t
1] [corresponding to accompanying drawing 11]
At t
0Constantly turn-off Q
1, primary current i
pGive C
1C is passed through in charging simultaneously
SSGive C
4Discharge, ν
ABDescend.As if transformer original edge voltage ν this moment
CBConstant, resonant inductance both end voltage ν then
AC＜0, diode D
9Conducting immediately is with ν
ACPincers are 0, so ν
CBMust descend the corresponding decline of secondary voltage, D
R2Junction capacitance C
DR2Voltage also descend C
DR2Discharged.An output inductor electric current part is given C like this
DR2Discharge, remainder are converted former limit and are given C
1Charging and give C
4Discharge, so i
pAt t
0Step descends constantly, and i
LrRemain unchanged, it is higher than i
pPart flow through D
9Because C is arranged
1, C
4And C '
D, Q
1Be that no-voltage is turn-offed.To t
1Constantly, C
4Voltage drop to zero, D
R2The nature conducting, A point potential drop is to V
In/ 2, D
5Conducting.3. switch mode 2[t
1, t
2] [corresponding to accompanying drawing 12]
D
5After the conducting, with Q
4The voltage clamp at two ends is in zero-bit, and can no-voltage open Q this moment
4During this period of time, ν
AB=0, i
pAnd i
LrAll be in nature afterflow state, size remains unchanged, the conducting simultaneously of two rectifying tubes of secondary.4. switch mode 3[t
2, t
3] [corresponding to accompanying drawing 13]
t
2Constantly turn-off Q
2, i
LrGive C
2C is passed through in charging simultaneously
SSGive C
3Discharge is because C
2And C
3Existence, Q
2Be that no-voltage is turn-offed.At this moment, ν
AB=-ν
C2, because two output rectifying tube D
R1And D
R2All conductings, transformer secondary winding voltage are zero, and former limit winding voltage also is zero, ν
ABDirectly be added on the resonant inductance.Therefore during this period, L in fact
rAnd C
2, C
3In resonance work.
To t
3Constantly, ν
C2Rise to V
In/ 2, ν
C3Reduce to 0.5. switch mode 4[t
3, t
4] [corresponding to accompanying drawing 14]
t
3Constantly, D
3The nature conducting, can no-voltage open Q this moment
3Though this moment Q
3Open-minded, but Q
3Do not flow through electric current, i
pBy D
3Circulation.Because i
pBe not enough to provide load current, two rectifying tubes of secondary are conducting simultaneously still, so the voltage of transformer secondary winding is zero, diode D
5, D
9Continue conducting, V
In/ 2 all are added in resonant inductance two ends, i
LrLinear decline.To t
4Constantly, i
LrReduce to and i
pEquate D
9Naturally turn-off.6. switch mode 5[t
4, t
5] [corresponding to accompanying drawing 15]
In this stage, two rectifying tubes continue conducting simultaneously, and former limit of transformer and secondary voltage are zero, V
In/ 2 all are added in resonant inductance two ends, i
LrAnd i
pLinear simultaneously decline.To t
5Constantly, i
pReduce to zero, D
5Naturally turn-off.7. switch mode 6[t
5, t
6] [corresponding to accompanying drawing 16]
t
5Constantly, i
pBy on the occasion of zero passage, and increase Q to negative direction
3And Q
4Be i
pProvide path, because i
pStill be not enough to provide load current, two output rectifying tube conductings simultaneously, therefore, former limit winding voltage is zero, being added in the resonant inductance both end voltage is V
In/ 2, i
LrAnd i
pLinear decline.
To t
6Constantly, i
pReach the load current-i of conversion to former limit
Lr(t
6)/K, D
R1Turn-off D
R2Flow through whole load currents.8. switch mode 7[t
6, t
7] [corresponding to accompanying drawing 17]
At t
6Constantly, L
rWith C
DR1D is given in resonance work
R1Junction capacitance C
DR1Charging, i
pAnd i
LrContinuing increases.
At t
7Constantly, C
DR1Voltage rise to V
In/ K, transformer original edge voltage ν simultaneously
CBBe V
In/ 2, D
10Conducting is with ν
CBPincers are at V
In/ 2, therefore with C
DR1Voltage clamp at V
In/ K.This moment i
pAnd i
LrFor-I
29. switch mode 8[t
7, t
8] [corresponding to accompanying drawing 18]
Work as D
10After the conducting, i
pStep drops to the filter inductance electric current of converting former limit, and i
LrThe circuit that remains unchanged enters stable state, it and i
pDifference from D
10In flow through.To t
8Constantly, i
pAnd i
LrEquate that this mode finishes.10. switch mode 9[t
8, t
9] [corresponding to accompanying drawing 19]
In this mode, former limit provides energy to secondary, i
pWith i
LrEquate.
The operation principle that do not have to connect electric capacity or resonant inductance and transformer transposition and remove two fly-wheel diodes is with above-mentioned basic identical, and the effect that obtains at last is also basic identical, so states no longer more.
Example of the present invention is as follows: input ac voltage 380V/50Hz alternating current is V through obtaining direct voltage behind the rectifying and wave-filtering
In=530VDC; Output dc voltage is V
0=54VDC; Output current I
0=10A; The former secondary turn ratio of transformer K=3; Resonant inductance is L
r=21 μ H; Output inductor is L
t=70 μ H; Output filter capacitor is C
j=6600 μ F; Switching tube is MOSFET:IRF840; Diode is DSE112-06A; Switching frequency is f
s=1OOkHz.
As seen from the above description, the three-level zero-voltage switch DC convertor with clamp diode of the present invention's proposition has following advantage:
1. owing to added clamp diode, the voltage that the secondary commutation diode does not exist reverse recovery to cause
Vibration and due to voltage spikes.
2. switch tube voltage stress is half of input direct voltage, is beneficial to select suitable switching tube;
3. can realize the zero voltage switch of switching tube.
Claims (1)
1. the three-level DC converter of zero-voltage switch with clamp diode comprises by input dividing potential drop electric capacity (1), inverter bridge (2), isolating transformer (3), rectification and filter circuit (4), it is characterized in that also being included in isolating transformer T
rFormer limit winding and resonant inductance L
rTwo clamp circuits that clamp diode constituted (5) are drawn at the intersection point place, and two clamp diodes are connected in the centre of every pair of switching tube of the upper and lower two pairs of switching tubes of inverter bridge (2) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119044A CN1109399C (en) | 2000-10-19 | 2000-10-19 | Three-level Dc converter of zero-voltage switch with clamping diode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN00119044A CN1109399C (en) | 2000-10-19 | 2000-10-19 | Three-level Dc converter of zero-voltage switch with clamping diode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1286521A true CN1286521A (en) | 2001-03-07 |
| CN1109399C CN1109399C (en) | 2003-05-21 |
Family
ID=4587439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN00119044A Expired - Fee Related CN1109399C (en) | 2000-10-19 | 2000-10-19 | Three-level Dc converter of zero-voltage switch with clamping diode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1109399C (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337392C (en) * | 2003-12-26 | 2007-09-12 | 台达电子工业股份有限公司 | DC/DC converter having voltage clamping circuit |
| CN100353652C (en) * | 2004-10-13 | 2007-12-05 | 南京航空航天大学 | Combined type full-bridge three-level DC converter and full-bridge three-level DC converter |
| CN100456616C (en) * | 2004-12-08 | 2009-01-28 | 力博特公司 | Inverter circuit and inverting method thereof |
| CN100571006C (en) * | 2006-05-16 | 2009-12-16 | 中国科学院电工研究所 | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof |
| CN1866713B (en) * | 2006-05-16 | 2010-05-12 | 中国科学院电工研究所 | Three-level zero-voltage switch DC convertor and control method thereof |
| CN101599713B (en) * | 2009-07-07 | 2011-09-14 | 华中科技大学 | Three-level inverter of single-phase mixed bridge |
| CN101517877B (en) * | 2006-09-15 | 2012-05-23 | 三菱电机株式会社 | Dc/DC power converter |
| CN101860206B (en) * | 2010-05-12 | 2012-08-22 | 矽力杰半导体技术(杭州)有限公司 | Three-level buck convertor |
| CN101373931B (en) * | 2007-08-24 | 2012-08-29 | Abb公司 | Method and apparatus for stabilizing voltage of intermediate circuit of frequency converter |
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| CN101888174B (en) * | 2007-05-15 | 2013-07-24 | 日立空调·家用电器株式会社 | Power conversion device |
| CN103595257A (en) * | 2013-11-28 | 2014-02-19 | 南京航空航天大学 | Isolation type direct-current buck converter with soft switching function and control method of isolation type direct-current buck converter |
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| US10873260B2 (en) | 2018-03-12 | 2020-12-22 | Analog Devices International Unlimited Company | Zero-voltage switching hybrid switched-capacitor converter |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337392C (en) * | 2003-12-26 | 2007-09-12 | 台达电子工业股份有限公司 | DC/DC converter having voltage clamping circuit |
| CN100353652C (en) * | 2004-10-13 | 2007-12-05 | 南京航空航天大学 | Combined type full-bridge three-level DC converter and full-bridge three-level DC converter |
| CN100456616C (en) * | 2004-12-08 | 2009-01-28 | 力博特公司 | Inverter circuit and inverting method thereof |
| CN100571006C (en) * | 2006-05-16 | 2009-12-16 | 中国科学院电工研究所 | Superconducting energy storage bidirectional three-level soft switch DC/DC converter and control method thereof |
| CN1866713B (en) * | 2006-05-16 | 2010-05-12 | 中国科学院电工研究所 | Three-level zero-voltage switch DC convertor and control method thereof |
| CN101517877B (en) * | 2006-09-15 | 2012-05-23 | 三菱电机株式会社 | Dc/DC power converter |
| CN101888174B (en) * | 2007-05-15 | 2013-07-24 | 日立空调·家用电器株式会社 | Power conversion device |
| CN101373931B (en) * | 2007-08-24 | 2012-08-29 | Abb公司 | Method and apparatus for stabilizing voltage of intermediate circuit of frequency converter |
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| CN107769576A (en) * | 2017-11-30 | 2018-03-06 | 郑州云海信息技术有限公司 | A kind of three-level soft switch DC transfer circuit of primary side clamper |
| US10873260B2 (en) | 2018-03-12 | 2020-12-22 | Analog Devices International Unlimited Company | Zero-voltage switching hybrid switched-capacitor converter |
| CN111092555A (en) * | 2019-12-13 | 2020-05-01 | 南京理工大学 | Three-level soft switch high-frequency resonant converter |
| CN111092555B (en) * | 2019-12-13 | 2022-01-07 | 南京理工大学 | Three-level soft switch high-frequency resonant converter |
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|---|---|
| CN1109399C (en) | 2003-05-21 |
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