CN101557172B - Input interleaved series forward DC-DC converter - Google Patents
Input interleaved series forward DC-DC converter Download PDFInfo
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- CN101557172B CN101557172B CN2009100277013A CN200910027701A CN101557172B CN 101557172 B CN101557172 B CN 101557172B CN 2009100277013 A CN2009100277013 A CN 2009100277013A CN 200910027701 A CN200910027701 A CN 200910027701A CN 101557172 B CN101557172 B CN 101557172B
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- diode
- power switch
- switch pipe
- connect
- former limit
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Abstract
The invention discloses an input interleaved series forward DC-DC converter which belongs to the field of DC-DC converters. The structure comprises a primary circuit, a first high-frequency isolation transformer, a second high-frequency isolation transformer and an output rectifying and filtering circuit, wherein the primary circuit consists of a DC power supply, two voltage-dividing capacitors, four power switch tubes and two magnetic reset diodes, the first and the second high-frequency isolation transformers both consist of primary windings and secondary windings, and the output rectifying and filtering circuit consists of a filter inductor, a filter capacitor, an output load and three diodes. The two interleaved series forward converters can not only realize the magnetic reset of the transformers, but also lead the voltage stress of the switch tubes to be only one half of the input voltage; and the input interleaved series forward DC-DC converter improves the equivalent duty cycle of the converter, has small size of the filter and high reliability and is applicable to the occasions of medium and high voltage input and high current output.
Description
Technical field
The present invention relates to a kind of DC converter, relate in particular to a kind of input interleaved series forward DC-DC converter, belong to the DC converter field.
Background technology
Forward converter has obtained extensive studies and application in recent years.Traditional forward converter needs extra magnetic reset winding, and this has not only increased the volume weight of transformer, and has increased the voltage stress of switching tube, and the voltage stress of switching tube is generally more than the twice of maximum input voltage; RCD restoration type forward converter does not need extra magnetic reset winding, but the voltage stress of switching tube is the twice of input voltage still, and resistance needs consumed power in the reset circuit, has reduced the efficient of converter; The active clamping forward exciting converter has reduced the voltage stress of switching tube, but it needs an auxiliary switch increase cost, and this converter causes the conduction loss of switching tube to increase, and has reduced the efficient of converter; Two-transistor forward converter switch tube voltage stress equals input voltage, use diode to finish the magnetic reset of transformer, but its maximum duty cycle can only be 0.5.
Summary of the invention
The present invention is directed to the defective of the existing forward converter of mentioning in the background technology and propose a kind of input interleaved series forward DC-DC converter.
Input interleaved series forward DC-DC converter of the present invention, its structure comprises: former limit circuit, first high-frequency isolation transformer, second high-frequency isolation transformer and output rectification and filter circuit, wherein: former limit circuit comprises DC power supply, the first dividing potential drop electric capacity, the second dividing potential drop electric capacity, first power switch pipe, second power switch pipe, the 3rd power switch pipe, the 4th power switch pipe, the first magnetic reset diode and the second magnetic reset diode, the positive pole of DC power supply connects the drain electrode of an end and first power switch pipe of the first dividing potential drop electric capacity respectively, the source electrode of first power switch pipe connects the drain electrode of the negative electrode and second power switch pipe of the second magnetic reset diode respectively, the negative pole of DC power supply connects an end of the second dividing potential drop electric capacity and the source electrode of the 4th power switch pipe respectively, and the drain electrode of the 4th power switch pipe connects the anode of the first magnetic reset diode and the source electrode of the 3rd power switch pipe respectively; First high-frequency isolation transformer comprises the first former limit winding and the first secondary winding, second high-frequency isolation transformer comprises the second former limit winding and the second secondary winding, the end of the same name of the first former limit winding connects the source electrode of second power switch pipe and the negative electrode of the first magnetic reset diode respectively, the non-same polarity of the first former limit winding connects the other end of the first dividing potential drop electric capacity, the other end of the second dividing potential drop electric capacity and the non-same polarity of the second former limit winding respectively, and the end of the same name of the second former limit winding connects the drain electrode of the 3rd power switch pipe and the anode of the second magnetic reset diode respectively; Output rectification and filter circuit comprise the 3rd diode, the 4th diode, the 5th diode, filter inductance, filter capacitor and output loading, the anode of the 3rd diode connects the end of the same name of the first secondary winding, the non-same polarity of the first secondary winding connects the end of the same name of the second secondary winding respectively, the anode of the 5th diode, one end of filter capacitor and an end of output loading, the non-same polarity of the second secondary winding connects the anode of the 4th diode, the negative electrode of the 4th diode connects the negative electrode of the 3rd diode respectively, one end of the negative electrode of the 5th diode and filter inductance, the other end of filter inductance connect the other end of filter capacitor and the other end of output loading respectively.
Input interleaved series forward DC-DC converter of the present invention has following beneficial effect: 1, switch tube voltage stress is half of input voltage, is applicable to high pressure input occasion; 2, high-frequency isolation transformer is finished magnetic reset by diode, does not need extra magnetic reset winding or magnetic reset circuit, and circuit structure is simple; 3, realized that the no-voltage of first power switch pipe and the 4th power switch pipe is open-minded, the conversion efficiency height; 4, secondary output in parallel has improved equivalent duty inductive current pulsation frequency when, helps reducing the output filter volume, improves power density, reduces cost; 5, there is not bridge arm direct pass, the transducer reliability height.
Description of drawings
Fig. 1 is the circuit theory diagrams of input interleaved series forward DC-DC converter of the present invention.
Fig. 2 is the main oscillogram of input interleaved series forward DC-DC converter of the present invention, among the figure: D
S1～D
S4Be respectively the drive signal of the first, second, third and the 4th power switch pipe, ON represents that switching tube is open-minded, and OFF represents that switching tube turn-offs; i
D1, i
D2It is respectively the electric current of the first and second magnetic reset diodes; i
S1, i
S2, i
S3, i
S4Be respectively the source current of first, second, third, fourth power switch pipe, flow out on the occasion of; v
NP1, v
NP2Be respectively the voltage of the first and second former limit windings, wherein: the end of the same name of the first former limit winding is being for just, and non-same polarity is for negative, and the end of the same name of the second former limit winding is for negative, and non-same polarity is for just; v
S1, v
S2, v
S3, v
S4Be respectively the drain electrode of first, second, third, fourth power switch pipe and the voltage between source electrode; t
0～t
6Express time.
Fig. 3～Fig. 8 is respectively the equivalent circuit theory figure of interleaved series forward DC-DC converter of the present invention in switch mode 1～switch mode 6.
Label title in Fig. 1 and Fig. 3～Fig. 8: the former limit of 10-circuit; 20-output rectification and filter circuit; V
InBe DC power supply (input voltage); S
1～S
4Be respectively first, second, third, fourth power switch pipe; D
1, D
2Be respectively first, second magnetic reset diode; T
1, T
2Be respectively first, second high-frequency isolation transformer; N
P1, N
S1Be respectively the first former limit winding, the first secondary winding; N
P2, N
S2Be respectively the second former limit winding, the second secondary winding; C
1, C
2Be respectively first, second dividing potential drop electric capacity; D
3～D
5Be respectively the 3rd, the 4th, the 5th diode; L
o-filter inductance; C
o-filter capacitor; R
o-output loading.
Embodiment
As shown in Figure 1, the circuit theory diagrams of input interleaved series forward DC-DC converter of the present invention, its circuit structure comprises: former limit circuit 10, the first high-frequency isolation transformer T
1, the second high-frequency isolation transformer T
2With output rectification and filter circuit 20, wherein: former limit circuit 10 comprises DC power supply V
In, the first dividing potential drop capacitor C
1, the second dividing potential drop capacitor C
2, first power switch tube S
1, second power switch tube S
2, the 3rd power switch tube S
3, the 4th power switch tube S
4, the first magnetic reset diode D
1With the second magnetic reset diode D
2, DC power supply V
InPositive pole connect the first dividing potential drop capacitor C respectively
1An end and first power switch tube S
1Drain electrode, first power switch tube S
1Source electrode connect the second magnetic reset diode D respectively
2The negative electrode and second power switch tube S
2Drain electrode, DC power supply V
InNegative pole connect the second dividing potential drop capacitor C respectively
2An end and the 4th power switch tube S
4Source electrode, the 4th power switch tube S
4Drain electrode connect the first magnetic reset diode D respectively
1Anode and the 3rd power switch tube S
3Source electrode; The first high-frequency isolation transformer T
1Comprise the first former limit winding N
P1With the first secondary winding N
S1, the second high-frequency isolation transformer T
2Comprise the second former limit winding N
P2With the second secondary winding N
S2, the first former limit winding N
P1End of the same name connect second power switch tube S respectively
2The source electrode and the first magnetic reset diode D
1Negative electrode, the first former limit winding N
P1Non-same polarity connect the first dividing potential drop capacitor C respectively
1The other end, the second dividing potential drop capacitor C
2The other end and the second former limit winding N
P2Non-same polarity, the second former limit winding N
P2End of the same name connect the 3rd power switch tube S respectively
3The drain electrode and the second magnetic reset diode D
2Anode; Output rectification and filter circuit 20 comprise the 3rd diode D
3, the 4th diode D
4, the 5th diode D
5, filter inductance L
o, filter capacitor C
oWith output loading R
o, the 3rd diode D
3Anode connect the first secondary winding N
S1End of the same name, the first secondary winding N
S1Non-same polarity connect the second secondary winding N respectively
S2End of the same name, the 5th diode D
5Anode, filter capacitor C
oAn end and output loading R
oAn end, the second secondary winding N
S2Non-same polarity connect the 4th diode D
4Anode, the 4th diode D
4Negative electrode connect the 3rd diode D respectively
3Negative electrode, the 5th diode D
5Negative electrode and filter inductance L
oAn end, filter inductance L
oThe other end connect filter capacitor C respectively
oThe other end and output loading R
oThe other end.
The control mode of input interleaved series forward DC-DC converter of the present invention is as follows: power switch tube S
1With S
2Drive signal identical, power switch tube S
3With S
4Drive signal identical, power switch tube S
1(or S
2) drive signal and power switch tube S
3(or S
4) 180 ° of drive signal phase phasic differences.
Below in conjunction with Fig. 2～Fig. 8 the concrete operation principle of the present invention and the course of work are described.Make the following assumptions earlier before analysis: (1) all switching tubes and diode are desirable device; (2) dividing potential drop capacitor C
1And C
2Enough big and equal, can regard them as V
In/ 2 voltage source; (3) filter inductance L
oEnough big, inductive current I
LBe level and smooth direct current.
1. switch mode 1 is (corresponding to [t
0, t
1], its equivalent electric circuit is as shown in Figure 3)
t
0Constantly, S
1, S
2Open-minded, S wherein
1For no-voltage open-minded, S
3, S
4Turn-off D
1End D
2Conducting, converter passes through T
1Transmit energy, T to secondary
1Magnetizing current become big since 0, T
2The magnetizing current D that flows through
2, S
1, C
1Carry out degaussing, magnetizing current constantly reduces, D
3Conducting, D
4, D
5End.At this mode, T
1Former limit winding voltage is V
In/ 2, S
3, S
4Bear input voltage jointly, S
3, S
4Voltage stress be V
In/ 2.
2. switch mode 2 is (corresponding to [t
1, t
2], its equivalent electric circuit is as shown in Figure 4)
t
1Constantly, T
2Magnetizing current reduce to 0, T
2Magnetization process finishes, S
1, S
2Still open-minded, S
3, S
4All turn-off D
1, D
2All end, converter passes through T
1Transmit energy, T to secondary
1Magnetizing current continue to increase D
3Conducting, D
4, D
5End.At this mode, S
3, S
4Bear V jointly
In/ 2 voltages, S
3, S
4Voltage stress be V
In/ 4.
3. switch mode 3 is (corresponding to [t
2, t
3], its equivalent electric circuit is as shown in Figure 5)
t
2Constantly, S
1, S
2Turn-off S
3Still turn-off D
2End T
1The magnetizing current C that flows through
2, S
4Body diode, D
1Carry out degaussing, T
1Magnetizing current constantly reduce D
3, D
4End D
5Conducting, L
oPass through D
5Carry out afterflow.At this mode, S
1, S
2, S
3Voltage stress be V
In/ 2.
4. switch mode 4 is (corresponding to [t
3, t
4], its equivalent electric circuit is as shown in Figure 6)
t
3Constantly, S
3, S
4Conducting, wherein S
4For no-voltage open-minded, D
2End D
1Conducting, converter passes through T
2Transmit energy, T to secondary
2Magnetizing current become big since 0, T
1The magnetizing current C that flows through
2, S
4Body diode, D
1Carry out degaussing, magnetizing current constantly reduces, D
4Conducting, D
3, D
5End.At this mode, T
2Former limit winding voltage is V
In/ 2, S
1, S
2Bear input voltage jointly, S
1, S
2Voltage stress be V
In/ 2.
5. switch mode 5 is (corresponding to [t
4, t
5], its equivalent electric circuit is as shown in Figure 7)
t
4Constantly, T
1Magnetizing current reduce to 0, T
1Magnetization process finishes, S
3, S
4Still open-minded, S
1, S
2All turn-off D
1, D
2All end, converter passes through T
2Transmit energy, T to secondary
2Magnetizing current continue to increase D
4Conducting, D
3, D
5End.At this mode, S
1, S
2Bear V jointly
In/ 2 voltages, S
1, S
2Voltage stress be V
In/ 4.
6. switch mode 6 is (corresponding to [t
5, t
6], its equivalent electric circuit is as shown in Figure 8)
t
5Constantly, S
3, S
4Turn-off S
2Still turn-off D
1End T
2The magnetizing current C that flows through
1, S
1Body diode, D
2Carry out degaussing, T
2Magnetizing current constantly reduce D
3, D
4End D
5Conducting, L
oPass through D
5Carry out afterflow.At this mode, S
2, S
3, S
4Voltage stress be V
In/ 2.
As seen from the above analysis, the forward converter of two interleaved series, not only realized the magnetic reset of transformer, and the voltage stress of switching tube only is input voltage half, therefore go for middle and high having a meeting, an audience, etc. well under one's control and close, secondary adopts crisscross parallel to connect, and has improved equivalent duty outputting inductance current pulsation when frequency, help reducing the volume of output filter, be particularly suitable for exporting the occasion of big electric current.
Claims (1)
1. an input interleaved series forward DC-DC converter is characterized in that: comprise former limit circuit (10), the first high-frequency isolation transformer (T
1), the second high-frequency isolation transformer (T
2) and output rectification and filter circuit (20), wherein: former limit circuit (10) comprises DC power supply (V
In), the first dividing potential drop electric capacity (C
1), the second dividing potential drop electric capacity (C
2), the first power switch pipe (S
1), the second power switch pipe (S
2), the 3rd power switch pipe (S
3), the 4th power switch pipe (S
4), the first magnetic reset diode (D
1) and the second magnetic reset diode (D
2), DC power supply (V
In) positive pole connect the first dividing potential drop electric capacity (C respectively
1) an end and the first power switch pipe (S
1) drain electrode, the first power switch pipe (S
1) source electrode connect the second magnetic reset diode (D respectively
2) the negative electrode and the second power switch pipe (S
2) drain electrode, DC power supply (V
In) negative pole connect the second dividing potential drop electric capacity (C respectively
2) an end and the 4th power switch pipe (S
4) source electrode, the 4th power switch pipe (S
4) drain electrode connect the first magnetic reset diode (D respectively
1) anode and the 3rd power switch pipe (S
3) source electrode; First high-frequency isolation transformer (the T
1) comprise the first former limit winding (N
P1) and the first secondary winding (N
S1), the second high-frequency isolation transformer (T
2) comprise the second former limit winding (N
P2) and the second secondary winding (V
S2), the first former limit winding (N
P1) end of the same name connect the second power switch pipe (S respectively
2) the source electrode and the first magnetic reset diode (D
1) negative electrode, the first former limit winding (N
P1) non-same polarity connect the first dividing potential drop electric capacity (C respectively
1) the other end, the second dividing potential drop electric capacity (C
2) the other end and the second former limit winding (N
P2) non-same polarity, the second former limit winding (N
P2) end of the same name connect the 3rd power switch pipe (S respectively
3) the drain electrode and the second magnetic reset diode (D
2) anode; Output rectification and filter circuit (20) comprise the 3rd diode (D
3), the 4th diode (D
4), the 5th diode (D
5), filter inductance (L
o), filter capacitor (C
o) and output loading (R
o), the 3rd diode (D
3) anode connect the first secondary winding (N
S1) end of the same name, the first secondary winding (N
S1) non-same polarity connect the second secondary winding (N respectively
S2) end of the same name, the 5th diode (D
5) anode, filter capacitor (C
o) an end and output loading (R
o) an end, the second secondary winding (N
S2) non-same polarity connect the 4th diode (D
4) anode, the 4th diode (D
4) negative electrode connect the 3rd diode (D respectively
3) negative electrode, the 5th diode (D
5) negative electrode and filter inductance (L
o) an end, filter inductance (L
o) the other end connect filter capacitor (C respectively
o) the other end and output loading (R
o) the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100277013A CN101557172B (en) | 2009-05-19 | 2009-05-19 | Input interleaved series forward DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100277013A CN101557172B (en) | 2009-05-19 | 2009-05-19 | Input interleaved series forward DC-DC converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101557172A CN101557172A (en) | 2009-10-14 |
| CN101557172B true CN101557172B (en) | 2011-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100277013A Expired - Fee Related CN101557172B (en) | 2009-05-19 | 2009-05-19 | Input interleaved series forward DC-DC converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300990A (en) * | 2016-09-20 | 2017-01-04 | 太原理工大学 | The active clamped normal shock DC/DC converter topology circuit of dual transformer structure |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9369051B2 (en) * | 2013-10-02 | 2016-06-14 | Texas Instruments Incorporated | Interleaved forward converter with wide input and output dynamic range |
| CN104506073A (en) * | 2015-01-12 | 2015-04-08 | 苏州大学 | Electric spark power source and working method thereof |
| CN108365768A (en) * | 2018-04-11 | 2018-08-03 | 北京知行新能科技有限公司 | One kind being tethered at unmanned plane high voltage supply system |
| CN113067480B (en) * | 2021-04-23 | 2022-05-17 | 深圳市首航新能源股份有限公司 | Magnetic reset control method and isolation converter |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734905A (en) * | 2005-07-21 | 2006-02-15 | 南京航空航天大学 | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter |
-
2009
- 2009-05-19 CN CN2009100277013A patent/CN101557172B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1734905A (en) * | 2005-07-21 | 2006-02-15 | 南京航空航天大学 | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter |
Non-Patent Citations (3)
| Title |
|---|
| Satoshi Hamada et al.A Novel Zero-Voltage and Zero-Current Switching PWM DC–DC Converter With Reduced Conduction Losses.《POWER ELECTRONICS,IEEE TRANSACTIONS ON》.2002,第17卷(第3期),第413页第1栏第1段至第414页第1段、图2. * |
| 毛赛君等.双正激变换器软开关拓扑的分析与评价.《电源技术研究与设计》.2005,(第7期),第20-26页. * |
| 裘迅等.交错串联-并联双管正激变换器的一种均压方法.《中国电机工程学报》.2008,第28卷(第24期),第1-6页. * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300990A (en) * | 2016-09-20 | 2017-01-04 | 太原理工大学 | The active clamped normal shock DC/DC converter topology circuit of dual transformer structure |
| CN106300990B (en) * | 2016-09-20 | 2018-08-21 | 太原理工大学 | The active clamped normal shock DC/DC converter topology circuits of dual transformer structure |
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| Publication number | Publication date |
|---|---|
| CN101557172A (en) | 2009-10-14 |
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