CN101814840B - Zero voltage switch full-bridge direct-current converter with diode and auxiliary transformer clamping - Google Patents
Zero voltage switch full-bridge direct-current converter with diode and auxiliary transformer clamping Download PDFInfo
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Abstract
The invention provides a zero voltage switch full-bridge direct-current converter with a diode and an auxiliary transformer clamping. In the invention, mainly based on a full-bridge direct-current converter comprising a direct-current power supply Vin, a first contravariant bridge arm, a second contravariant bridge arm, a resonance inductor, a clamping circuit, an isolation transformer and a rectification and filtering circuit, an auxiliary transformer and an auxiliary clamping circuit are added. The auxiliary transformer can effectively reduce current flowing over a lamping diode and an auxiliary clamping diode and improve working environment of the clamping diode; and meanwhile, since the clamping circuit and the auxiliary clamping circuit are both reversely connected in parallel at the two ends of input voltage of the converter, the converter can not be influenced by output voltage in a starting state or an output short-circuit current-limiting state at all; and therefore, the converter can use the voltage of the direct-current power supply Vin to effectively reset the current of the clamping diode no matter in what state and has the advantages of more stable and reliable work, more compact and effective structure, lower cost and the like.
Description
Technical field
The present invention relates to a kind of converter, particularly a kind of diode adds the Zero-voltage switch full-bridge direct current converter of auxiliary transformer clamping, belongs to dc converter.
Background technology
In powerful DC converting occasion, full-bridge converter is realized easily soft switch and is adopted constant frequency control to obtain using widely owing to switching tube.Recent two decades comes, and soft switch control strategy of a lot of full-bridge converters and circuit topology have occurred.Phase shifting control full-bridge converter of zero-voltage switch and phase shifting control zero-voltage and zero-current switch full-bridge converter all can be realized the soft switch of switching tube.But no matter be ZVT or zero-voltage and zero-current switch full-bridge converter; Because there be reverse the recovery in the secondary rectifier diode; The leakage inductance of transformer (or additional resonant inductance) is just together with the junction capacitance generation resonance of exporting rectifying tube; Can bear higher peak voltage on the diode, therefore must select kenotron, this also just means the forward conduction voltage drop that increases the secondary rectifier diode.Richard Redl, Nathan O.Sokal andLaszlo Balogh, " A novel soft-switching full-bridge DC/DC converter:analysis; designconsiderations, and experimental results at 1.5kW, 100kHz; " In Proc.IEEE PESC; 1990, pp.162-172 discloses a kind of Zero-voltage switch full-bridge direct current converter, introduces a resonant inductance and two clamping diodes on the former limit of transformer; The soft switching characteristic that has not only kept switching tube has been eliminated due to voltage spikes and voltage oscillation on the output rectifying tube simultaneously effectively.
But also there is certain problem in the clamping diode of introducing, in heavily loaded situation; When the clamping diode conducting, resonant inductance is by short circuit, and its electric current almost remains unchanged; Output inductor needs bigger pulsating current, and clamping diode is turn-offed naturally, otherwise clamping diode will be by hard shutoff; Cause serious reverse recovery loss, even damage clamping diode.
Under underloading even no-load condition, the junction capacitance discharge regime of transformer secondary rectifier diode, the energy of release can't be transferred to load end; Can only be stored in the resonant inductance; Force the many conductings of clamping diode once, electric current is the poor of resonant inductance electric current and transformer primary current in the clamping diode, and this moment, the transformer primary current was approximately zero; Electric current approximates the resonant inductance electric current in the clamping diode; Because resonant inductance is by the switching tube of leading-bridge and clamping diode short circuit, inductive current remains unchanged, so electric current remains unchanged in approximate half switch periods in the clamping diode.Two clamping diodes are a switch periods alternate conduction, and are straight-through easily if the turn-off speed of clamping diode is fast inadequately, cause the damage of clamping diode.
For this reason; Application number is to have proposed in 200710019261.8 the patent of invention " diode adds the Zero-voltage switch full-bridge direct current converter of current transformer clamp " to adopt the method for current transformer to reduce to flow through electric current in the clamping diode; Make it be rapidly reduced to zero; Improved conversion efficiency, but the output of the current transformer rectification circuit that this circuit increases need be connected with the auxiliary direct current potential source that does not have in advance, like this auxiliary direct current potential source circuit complicacy comparatively then when being provided with in addition; When this auxiliary direct current potential source replaces with the converter output voltage; In the time of then can being in starting up's state or output short-circuit limited current state because of full-bridge converter; Output voltage is relatively very low, and utilize the converter output voltage not reset to clamp diode current effectively this moment.Simultaneously,, then need use four diodes, make circuit more complicated, also can increase production cost if the current transformer rectification circuit that increases adopts the full-bridge rectification mode.
Summary of the invention
The objective of the invention is to add the weak point of the Zero-voltage switch full-bridge direct current converter of current transformer clamp formula to above-mentioned diode, design a kind of circuit structure succinct more, effectively, cost lower under which kind of loading condition, can reduce fast effectively to flow through the electric current in the clamping diode and the diode that improves conversion efficiency adds the Zero-voltage switch full-bridge direct current converter of auxiliary transformer clamping.
Diode of the present invention adds the Zero-voltage switch full-bridge direct current converter of auxiliary transformer clamping; Comprise DC power supply Vin, first inverter bridge leg (1) and second inverter bridge leg (2), resonant inductance (3), clamp circuit (4), isolating transformer (7), rectification and filter circuit (8), its annexation is: first inverter bridge leg (1) forward of being made up of first switching tube (Q1) and the 3rd switching tube (Q3) series connection back is connected in parallel on DC power supply Vin positive-negative output end; Be connected in parallel on DC power supply Vin positive-negative output end, the also parallelly connected separately individual diodes of four switching tubes (Q1, Q2, Q3, Q4) and a parasitic capacitance of above-mentioned first to fourth by second inverter bridge leg of forming after second switch pipe (Q2) and the 4th switching tube (Q4) series connection (2) also forward; Clamp circuit (4) is composed in series by two clamping diodes (D5, D6) forward, and this clamp circuit (4) is connected in reverse parallel in first inverter bridge leg (1) two ends and second inverter bridge leg (2) two ends; Two secondary windings with the number of turn of the secondary of isolating transformer (7) are in series, and wherein the series connection point of two secondary windings links to each other with the negative terminal of current rectifying and wave filtering circuit (8), and two other disjunct terminal links to each other with two anodes of rectification and filter circuit (8) respectively; Resonant inductance (3) and the former limit of above-mentioned isolating transformer (7) windings in series, these series arm two ends are connected in the series connection point (B) of two switching tubes (Q2, Q4) of series connection point (A) and second inverter bridge leg (2) of two switching tubes (Q1, Q3) of first inverter bridge leg (1) respectively; It is characterized in that also comprising auxiliary transformer (5) and auxiliary clamp circuit (6); Said auxiliary clamp circuit (6) is composed in series by two auxiliary clamping diodes (Da1, Da2) forward, and this auxiliary clamp circuit (6) is connected in reverse parallel in first inverter bridge leg (1) two ends and second inverter bridge leg (2) two ends; The end of the same name of the former limit of auxiliary transformer (5) winding links to each other with the series connection point (C) of resonant inductance (3) with the former limit of isolating transformer (7) winding, and the different name end links to each other with two clamping diodes (D5, D6) series connection points (D) of clamp circuit (4); The end of the same name of auxiliary transformer (5) secondary winding links to each other with two clamping diodes (D5, D6) series connection points (D) of clamp circuit (4), and the different name end links to each other with two auxiliary clamping diodes (Da1, Da2) series connection points (E) of auxiliary clamp circuit (6).
The present invention is because clamp circuit (4) and auxiliary clamp circuit (6) all are connected in reverse parallel in first inverter bridge leg (1) two ends and second inverter bridge leg (2) two ends; Can more effectively eliminate the voltage oscillation and the due to voltage spikes that cause because of the reverse recovery of exporting rectifying tube; Reduced the voltage stress of output rectifying tube; And eliminated the loss that the output rectifying tube causes because of reverse recovery, simultaneously, auxiliary transformer of introducing (5) and auxiliary clamp circuit (6); This auxiliary transformer can reduce to flow through electric current in clamping diode and the auxiliary clamping diode effectively fast; Improve the operational environment of clamping diode, simultaneously because clamp circuit (4) and auxiliary clamp circuit (6) all are connected in reverse parallel in the two ends of the input voltage of converter, output voltage influence when not receiving starting up's state or output short-circuit limited current state fully; Make converter no matter be in what state; Can both utilize the voltage of DC power supply Vin effectively clamp diode current to be resetted, it is reliable to have more stable work, and structure is succinct more effectively and advantage such as cost is lower.
Description of drawings
Accompanying drawing 2 is respectively the groundwork waveform sketch map of Zero-voltage switch full-bridge direct current converter under heavy duty and underloading (or unloaded) situation that diode of the present invention adds auxiliary transformer clamping with accompanying drawing 3.
Accompanying drawing 4～19th, diode of the present invention add the operation mode schematic equivalent circuit of the Zero-voltage switch full-bridge direct current converter of auxiliary transformer clamping.
Main designation in the above-mentioned accompanying drawing: V
In, supply voltage.Q
1～Q
4, switching tube.C
1～C
4, parasitic capacitance.D
1～D
4, body diode.L
r, resonant inductance.T
r, isolating transformer.D
5, D
6, clamping diode.D
R1, D
R2, output rectifier diode.L
f, filter inductance.C
f, filter capacitor.R
Ld, load.V
o, output voltage.v
Rect, voltage after the rectification of transformer secondary.v
AB, A and B point-to-point transmission voltage.v
CB, C and B point-to-point transmission voltage.T
a, auxiliary transformer.n
1, the former limit of the auxiliary transformer number of turn.n
2, the auxiliary transformer secondary number of turn.D
A1, D
A2, auxiliary clamping diode.
Embodiment
Shown in the accompanying drawing 1 is two kinds of electrical block diagrams of the diode Zero-voltage switch full-bridge direct current converter that adds auxiliary transformer clamping.By DC power supply V
In, two inverter bridge leg 1 and 2, resonant inductance 3, clamp circuit 4, isolating transformer 7, rectification and filter circuit 8, auxiliary transformer 5, auxiliary clamping diodes 6 form.Q
1～Q
4Be four main switches, D
1～D
4Be respectively switching tube Q
1～Q
4Body diode, C
1～C
4Be respectively switch Q
1～Q
4Parasitic capacitance, L
rBe resonant inductance, T
rBe isolating transformer, D
5, D
6Be clamping diode, D
R1And D
R2Be the output rectifier diode, L
fBe output inductor, C
fBe output filter capacitor, R
LdBe load, T
aBe auxiliary transformer, D
A1, D
A2It is auxiliary clamping diode.This converter using phase shifting control, switching tube Q
1And Q
3Be ahead of switching tube Q respectively
4And Q
2A phase place is claimed switching tube Q
1And Q
3First inverter bridge leg of forming is a leading-bridge, switching tube Q
2And Q
4Second inverter bridge leg of forming then is a lagging leg.Resonant inductance 3 and above-mentioned isolating transformer 7 former limit windings in series, two switching tube Q of the resonant inductance other end and first inverter bridge leg 1 in this series arm
1, Q
3Series connection point A link to each other the other end of isolating transformer 7 former limit windings and two switching tube Q of second inverter bridge leg 2
2, Q
4Series connection point B link to each other; Characteristics of the present invention are resonant inductance 3 and the series connection point C of isolating transformer 7 former limit windings and two clamping diode D of clamp circuit 4
5, D
6Series connection point D does not directly link to each other; But seal in the former limit winding of auxiliary transformer 5 between the D at a C and point; The end of the same name of auxiliary transformer 5 former limit windings links to each other two clamping diode D of different name end and clamp circuit 4 with the series connection point C of resonant inductance 3 with isolating transformer 7 former limit windings
5, D
6Series connection point D links to each other; The end of the same name of auxiliary transformer 5 secondary windings and two clamping diode D of clamp circuit 4
5, D
6Series connection point D links to each other, two clamping diode D of different name end and auxiliary clamp circuit 6
A1, D
A2Series connection point E links to each other.
Be main circuit structure with accompanying drawing 1 below, in conjunction with accompanying drawing 2～19 narrations concrete operation principle of the present invention.The operation principle of the present invention when different loads is different, divides two kinds of situation to discuss below, and a kind of situation is heavy duty, and main waveform is shown in accompanying drawing 2; Another kind of situation is a underloading, and main waveform is shown in accompanying drawing 3.
Before analyzing, make hypothesis as follows: 1. all switching tubes and diode are desirable device, rectifier diode D
R1And D
R2Except, their equivalences are an ideal diode and an electric capacity parallel connection, to be used for the simulated inverse recovery; 2. all inductance, electric capacity and transformer are ideal element; 3. define the turn ratio k=n of auxiliary transformer
1/ n
2
At first analyze the operation principle that the present invention is operated in heavily loaded situation.Can know that by accompanying drawing 2 whole converter has 16 kinds of switch mode a switch periods, be respectively [t
0, t
1], [t
1, t
2], [t
2, t
3], [t
3, t
4], [t
3, 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] (seeing accompanying drawing 2), wherein, [t
0, t
8] be the preceding half period, [t
8, t
16] be the later half cycle.Make a concrete analysis of in the face of the working condition of each switch mode down.
1. switch mode 1 [t
0, t
1] [corresponding to accompanying drawing 4]
t
0Moment on-off switching tube Q
1, primary current i
pGive capacitor C
1Capacitor C is given in charging simultaneously
3Discharge, the A point voltage descends.Because capacitor C is arranged
1And C
3, switching tube Q
1Be that no-voltage is turn-offed.Junction capacitance C
DR2Discharge, primary current i
pResonant inductance i
LrResonance descends.Because C point current potential is all the time greater than zero, so clamping diode D
6Can not conducting.Simultaneously because junction capacitance C
DR2Discharge, secondary voltage reduces, and original edge voltage reduces thereupon, and B point voltage clamp is zero, so C point current potential must be less than input voltage V
In, so clamping diode D
5Also can not conducting.t
1Constantly, capacitor C
3Voltage drop to zero, promptly A point current potential reduce to zero, diode D
3Conducting.
2. switch mode 2 [t
1, t
2] [corresponding to accompanying drawing 5]
D
3After the conducting, can no-voltage open Q
3This moment, the C point voltage did not also drop to zero, C
DR2Continue discharge, i
LrAnd i
pContinue to descend.t
2Constantly, C
DR2Discharge finishes, D
R2Conducting, C point voltage drop to zero, and switch mode 2 finishes.
3. switch mode 3 [t
2, t
3] [corresponding to accompanying drawing 6]
Rectifier diode D
R1And D
R2Conducting simultaneously, in zero-bit, A, B, 3 current potentials of C are zero at this moment, the resonant inductance current i with the former secondary voltage pincers of transformer
LrWith primary current i
pEquate, be in nature afterflow state, and remain unchanged always.
4. switch mode 4 [t
3, t
4] [corresponding to accompanying drawing 7]
t
3Constantly turn-off Q
4, i
LrGive C
4C is given in charging simultaneously
2Discharge.Because C
2And C
4Existence, Q
4Be that no-voltage is turn-offed.Because D
R1And D
R2All conductings, so the former secondary voltage of transformer is zero, v
ABDirectly be added in L
rOn, therefore, during this period, be actually L
rAnd C
2, C
4In resonance work.To t
4Constantly, v
C4Rise to V
In, C
2Voltage drop to zero, D
2The nature conducting.5. switch mode 5 [t
4, t
5] [corresponding to accompanying drawing 8]
D
2After the conducting, can no-voltage open Q
2This moment V
InStill all be added in L
rTwo ends, i
Lr=i
p, both are linear to descend.Drop to zero back negative direction and increase i
pReverse back is by Q
2And Q
3Path is provided, and load current still provides the loop by two rectifier diodes, and the former secondary voltage of transformer is still zero.To t
5Constantly, i
pReach the output inductor electric current on conversion to former limit, D
R1Turn-off, this switch mode finishes.
6. switch mode 6 [t
5, t
6] [corresponding to accompanying drawing 9]
At t
5Constantly, resonant inductance L
rWith rectifier diode junction capacitance C
DR1Rectifier diode D is given in resonance work
R1Junction capacitance C
DR1Charging, primary current i
pResonant inductive current i
LrContinuing increases.During this period of time, the B point voltage is fixed on V
In, and the former limit of transformer winding voltage v
BCBecause rectifier diode junction capacitance C
DR1Charging also rise simultaneously, so C point current potential is descending always.To t
6Constantly, v
RectRise to (V
In+ kV
In)/K, this moment, the C point voltage dropped to-kV
In, so D
6Conducting is with v
BCPincers is at V
In+ kV
In, v correspondingly
RectBe clamped at (V
In+ kV
In]/K has eliminated the due to voltage spikes and the voltage oscillation of secondary.
7. switch mode 7 [t
6, t
7] [corresponding to accompanying drawing 10]
D
6After the conducting, i
pStep drops to the filter inductance electric current of converting former limit, and negative sense increases.Clamp diode current i
D6From T
aFormer limit different name end flows into, and senses secondary and flows out from the different name end, makes D
A1Conducting, V
InBe added in T
aThe secondary winding on, sensing former limit is v
CC=kV
In, this voltage is added in L
rOn, make i
LrReduce fast.To t
7Constantly, i
pAnd i
LrEquate that this mode finishes, D
6Naturally turn-off.
8. switch mode 8 [t
7, t
8] [corresponding to accompanying drawing 11]
t
7Constantly, D
6Naturally close and have no progeny L
rWith C
DR1Resonance work, make the rectification of transformer secondary after voltage certain vibration is arranged, energy is transmitted to secondary in former limit simultaneously.
Following surface analysis the present invention is operated in the operation principle of underloading situation.Can know that by accompanying drawing 3 whole converter has 18 kinds of switch mode, wherein [t a switch periods
0, t
8] be the preceding half period.Make a concrete analysis of in the face of the working condition of each switch mode down.
1. switch mode 1 [t
0, t
1] [corresponding to accompanying drawing 12]
t
0Before, switching tube Q
1And Q
4Conducting, primary current are started from scratch and linear are increased secondary D
R1Conducting, D
R2End, former limit provides energy to secondary.t
0Constantly turn-off Q
1, i
pGive C
1C is given in charging simultaneously
3Discharge, the A point voltage descends.Because load current is very little, the A point voltage descends very for a short time in this mode, almost remain unchanged, so i
pAnd i
LfStill keep linear increasing.
2. switch mode 2 [t
1, t
2] [corresponding to accompanying drawing 13]
t
0Constantly, open Q firmly
3, Q
3And Q
4Conducting simultaneously, L at this moment
rAnd C
DR2Resonance work makes i
pAnd i
LrResonance descends.
Because load current is very little, i
DR1To compare v
CBBe reduced to zero earlier.At t
2Constantly, i
DR1Be reduced to zero, D
R1Turn-off.
3. switch mode 3 [t
2, t
3] [corresponding to accompanying drawing 14]
t
2Constantly, D
R1Turn-off v
CDR2Still greater than zero, C
DR2Continue discharge.Be equivalent to C
DR2, C
DR1Series connection and L
rResonance, C point current potential continue to descend.t
3Constantly, C point current potential drops to-kV
In, D
6Conducting.
4. switch mode 4 [t
3, t
4] [corresponding to accompanying drawing 15]
D
6After the conducting, i
D6From T
aFormer limit different name end flows into, and senses secondary and flows out from the different name end, makes D
A1Conducting, V
InSense T
aThe voltage direction on former limit is that the right side is just being born in a left side, and promptly D point current potential is higher than the C point, because A and D point current potential all are zero, so L
rBear the positive right negative voltage in a left side, size is kV
InThereby, make the quick reset-to-zero of clamp diode current.The transformer original edge voltage is clamped at v
BC=kV
In, C
DR1And C
DR2I is divided equally in discharge simultaneously
Lf, make v
RectDescend and i
p=0.t
4Constantly, v
CDR2Drop to zero, D
R2Conducting.
5. switch mode 5 [t
4, t
5] [corresponding to accompanying drawing 16]
D
R2After the conducting, v
RectBe clamped at kV
In/ K, D
6Continue conducting and make i
LrDescend i
pEqual to convert the i on former limit
Lft
5Constantly, i
LfDrop to zero, D
R2Turn-off.
6. switch mode 6 [t
5, t
6] [corresponding to accompanying drawing 17]
D
R2Have no progeny in the pass, C
DR1, C
DR2Parallel connection and L
fResonance makes v
RectBe rendered as the voltage waveform of pure oscillation.To t
6Constantly, i
LrDrop to zero, D
6Turn-off.
7. switch mode 7 [t
6, t
7] [corresponding to accompanying drawing 18]
t
6Constantly, C
DR1, C
DR2Parallel connection and L
fContinue resonance, up to t
7The arrival of next active state constantly.
8. switch mode 8 [t
7, t
8] [corresponding to accompanying drawing 19]
t
7Constantly, turn-off Q
4, open Q
2, energy is transmitted to secondary in former limit.
Can know that by above description the Zero-voltage switch full-bridge direct current converter that the diode that the present invention proposes adds auxiliary transformer has following advantage:
1. can more effectively eliminate the voltage oscillation and the due to voltage spikes that cause because of the reverse recovery of exporting rectifying tube, reduce the voltage stress of output rectifying tube, and eliminate the loss that the output rectifying tube causes because of reverse recovery.
2. utilize auxiliary transformer can reduce to flow through electric current in clamping diode and the auxiliary clamping diode effectively fast, improve the operational environment of clamping diode.
3. because clamp circuit and auxiliary clamp circuit all are connected in reverse parallel in the two ends of the input voltage of converter; Output voltage influence when not receiving starting up's state or output short-circuit limited current state fully; Make converter no matter be in what state, can both utilize input voltage effectively clamp diode current to be resetted.
4. be that 200710019261.8 patent of invention is compared with application number, the present invention is rising under the identical voltage clamping action situation, can lack the secondary winding of a transformer or lack two secondary rectifier diodes, so structure is succinct more and cost is lower etc.;
5. owing to can lack a winding or two diodes, the conduction loss that is caused by clamp diode current will be lower, therefore can raise the efficiency.
Claims (1)
1. a diode adds the Zero-voltage switch full-bridge direct current converter of auxiliary transformer clamping; Comprise DC power supply Vin, first inverter bridge leg (1) and second inverter bridge leg (2), resonant inductance (3), clamp circuit (4), isolating transformer (7), rectification and filter circuit (8), its annexation is: first inverter bridge leg (1) forward of being made up of first switching tube (Q1) and the 3rd switching tube (Q3) series connection back is connected in parallel on DC power supply Vin positive-negative output end; Be connected in parallel on DC power supply Vin positive-negative output end, the also parallelly connected separately individual diodes of four switching tubes (Q1, Q2, Q3, Q4) and a parasitic capacitance of above-mentioned first to fourth by second inverter bridge leg of forming after second switch pipe (Q2) and the 4th switching tube (Q4) series connection (2) also forward; Clamp circuit (4) is composed in series by two clamping diodes (D5, D6) forward, and this clamp circuit (4) is connected in reverse parallel in first inverter bridge leg (1) two ends and second inverter bridge leg (2) two ends; Two secondary windings with the number of turn of the secondary of isolating transformer (7) are in series, and wherein the series connection point of two secondary windings links to each other with the negative terminal of rectification and filter circuit (8), and two other disjunct terminal links to each other with two anodes of rectification and filter circuit (8) respectively; Resonant inductance (3) and the former limit of above-mentioned isolating transformer (7) windings in series, these series arm two ends are connected in the series connection point (B) of two switching tubes (Q2, Q4) of series connection point (A) and second inverter bridge leg (2) of two switching tubes (Q1, Q3) of first inverter bridge leg (1) respectively; It is characterized in that also comprising auxiliary transformer (5) and auxiliary clamp circuit (6); Said auxiliary clamp circuit (6) is composed in series by two clamping diodes (Da1, Da2) forward, and this auxiliary clamp circuit (6) is connected in reverse parallel in first inverter bridge leg (1) two ends and second inverter bridge leg (2) two ends; The end of the same name of the former limit of auxiliary transformer (5) winding links to each other with the series connection point (C) of resonant inductance (3) with the former limit of isolating transformer (7) winding, and the different name end links to each other with two clamping diodes (D5, D6) series connection points (D) of clamp circuit (4); The end of the same name of auxiliary transformer (5) secondary winding links to each other with two clamping diodes (D5, D6) series connection points (D) of clamp circuit (4), and the different name end links to each other with two clamping diodes (Da1, Da2) series connection points (E) of auxiliary clamp circuit (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101220477A CN101814840B (en) | 2010-03-11 | 2010-03-11 | Zero voltage switch full-bridge direct-current converter with diode and auxiliary transformer clamping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101220477A CN101814840B (en) | 2010-03-11 | 2010-03-11 | Zero voltage switch full-bridge direct-current converter with diode and auxiliary transformer clamping |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101814840A CN101814840A (en) | 2010-08-25 |
| CN101814840B true CN101814840B (en) | 2012-04-25 |
Family
ID=42621987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010101220477A Expired - Fee Related CN101814840B (en) | 2010-03-11 | 2010-03-11 | Zero voltage switch full-bridge direct-current converter with diode and auxiliary transformer clamping |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105720855B (en) * | 2016-04-04 | 2017-02-08 | 中国科学院地质与地球物理研究所 | Electromagnetic field transmitter and zero-voltage switching soft switch system thereof |
| CN105811779B (en) * | 2016-04-25 | 2018-08-28 | 天津大学 | CLTC resonant type soft-switch reversible transducers |
| US10389275B2 (en) | 2018-01-09 | 2019-08-20 | Infineon Technologies Austria Ag | Converter with ZVS |
| IT201800002255A1 (en) | 2018-01-31 | 2019-07-31 | St Microelectronics Srl | SWITCHING CIRCUIT, CORRESPONDING DEVICE AND PROCEDURE |
| IT201800002257A1 (en) | 2018-01-31 | 2019-07-31 | St Microelectronics Srl | SWITCHING CIRCUIT, CORRESPONDING DEVICE AND PROCEDURE |
| CN111245276A (en) * | 2020-03-27 | 2020-06-05 | 深圳市好盈科技有限公司 | Three-phase soft switching inverter and operation control strategy thereof |
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| JP2000224863A (en) * | 1998-11-25 | 2000-08-11 | Sanken Electric Co Ltd | Inverter apparatus |
| CN100561840C (en) * | 2006-10-13 | 2009-11-18 | 南京航空航天大学 | Zero-voltage switch full-bridge direct current converter |
| CN100448148C (en) * | 2007-01-09 | 2008-12-31 | 南京航空航天大学 | DC zero-voltage switched full-bridged converter of diode mutual inductor clamp |
| JP5034568B2 (en) * | 2007-03-09 | 2012-09-26 | 富士電機株式会社 | Switching power supply |
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