CN101562398B - Input series connection push-pull forward converter - Google Patents
Input series connection push-pull forward converter Download PDFInfo
- Publication number
- CN101562398B CN101562398B CN2009100328119A CN200910032811A CN101562398B CN 101562398 B CN101562398 B CN 101562398B CN 2009100328119 A CN2009100328119 A CN 2009100328119A CN 200910032811 A CN200910032811 A CN 200910032811A CN 101562398 B CN101562398 B CN 101562398B
- Authority
- CN
- China
- Prior art keywords
- power switch
- inductance
- winding
- connect
- diode
- 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.)
- Expired - Fee Related
Links
- 238000004804 winding Methods 0.000 claims abstract description 50
- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000003071 parasitic effect Effects 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002964 excitative effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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
- 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
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The invention discloses an input series connection push-pull forward converter which belongs to the field of power electronic converters. The structure thereof comprises a direct current power supply,a first voltage-dividing capacitor, a second voltage-dividing capacitor, a first power switch tube, a second power switch tube, a magnetic reset diode, a first inductor, a second inductor, a first re ctifier diode, a second rectifier diode, an output filter capacitor and a power transformer, and the main power transformer consists of two groups of primary windings (primary side) and two groups of secondary windings (secondary side). The primary side of the transformer consists of two forward converters in an interleaved series connection, the secondary side of the transformer is of a parallel output, the two forward converts use the public magnetic reset diode to complete the magnetic reset and the continuous flow of primary inductance, and the zero-voltage turning-on and turning-off of the power switch tubes can be realized through the primary inductance and parasitic capacitance of the power switch tubes. The input series conneciton push-pull forward converter has small size and highconversion efficiency and is applicable to medium-voltage and high-voltage input occasions.
Description
Technical field
The present invention relates to a kind of converter, relate in particular to a kind of input series connection push-pull forward converter, belong to the converters technical field.
Background technology
Switching power converters has significant advantages such as efficient height, volume are little, in light weight, is bringing into play more and more important effect in the every field of national economy such as industrial production, Aero-Space, generation of electricity by new energy.The reliability, efficient and the power density that improve converter are the important topics of converter research field always.
Two-transistor forward converter has the ability of inherent anti-bridge arm direct pass, the reliability height, thereby obtained using widely at industrial circle, but the switching tube number that two-transistor forward converter need use is more and maximum duty cycle can only be 0.5.Soft switch technique becomes the important means that improves transducer effciency and power density, has obtained extensive studies and application in recent years.The notion of commutator transformer has systematically been proposed with the scholar headed by the power electronics center Fred C.Lee of University of Virginia.Commutator transformer is worked under near 100% equivalent duty ratio, saved output inductor, simple in structure, employing open loop control, be easy to realize soft switch, can further improve efficient and power density, have widely in occasions such as the front end converter of the Voltage Regulator Module of two-layer configuration, distributed power supply system, Aviation Static Inverter and use.The main circuit topology of a kind of two-way two-transistor forward converter topology as commutator transformer proposed in Chinese patent 1545200A number, this converter has the advantages such as zero voltage switch that switch tube voltage stress is low, realize switching tube, but the switching tube quantity of using is many, and cost is higher.Commutator transformer topology commonly used also comprises topologys such as half-bridge, full-bridge, and all there is the potential hazard of bridge arm direct pass in these topologys.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of simple in structure, volume is little, conversion efficiency is high, power density is big and reliability is high input series connection push-pull forward converter at the defective that exists in the background technology.
Input series connection push-pull forward converter of the present invention, its structure 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 magnetic reset diode, first inductance, second inductance, first rectifier diode, second rectifier diode, output filter capacitor and main power transformer, wherein: 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 negative pole of DC power supply connects an end of the second dividing potential drop electric capacity and the source electrode of second power switch pipe respectively, the source electrode of first power switch pipe connects an end of first inductance and the negative electrode of magnetic reset diode respectively, and the drain electrode of second power switch pipe connects an end of second inductance and the anode of magnetic reset diode respectively; Main power transformer comprises the first elementary winding, the second elementary winding, first secondary winding and second subprime winding, the end of the same name of the first elementary winding connects the other end of first inductance, the end of the same name of the second elementary winding connects the other end of second inductance, the non-same polarity of the first elementary winding connects the non-same polarity of the second elementary winding respectively, the other end of the other end of the first dividing potential drop electric capacity and the second dividing potential drop electric capacity, the end of the same name of first secondary winding connects the anode of first rectifier diode, the non-same polarity of first secondary winding connects the end of the same name of second subprime winding respectively, one end of output filter capacitor and an end of output loading, the non-same polarity of second subprime winding connects the anode of second rectifier diode, and the negative electrode of second rectifier diode connects the negative electrode of first rectifier diode respectively, the other end of output filter capacitor and the other end of output loading.
Beneficial effect of the present invention is: 1, switch tube voltage stress equals input voltage, is applicable to middle and high pressure input occasion; 2, only use two power switch pipes and a magnetic reset diode, circuit structure is simple; 3, realized the zero voltage switch of power switch pipe, the conversion efficiency height; 4, by the integrated magnetic of transformer, reduced the volume of transformer, improved power density; 5, there is not bridge arm direct pass, the transducer reliability height; 6, the present invention should use as commutator transformer, adopts open loop control, rises and isolates and transformer action.
Description of drawings
Fig. 1 is input series connection push-pull forward converter topology theory figure of the present invention.
Fig. 2 is the main oscillogram of input series connection push-pull forward converter of the present invention, among the figure: D
S1, D
S2Be respectively the drive signal (ON represents that switching tube is open-minded, and OFF represents that switching tube turn-offs) of first, second power switch pipe; v
DS1, v
DS2Be respectively the voltage between first, second power switch pipe drain electrode and source electrode; v
NS1Be the first secondary winding N
S1Voltage; i
NP1, i
NP2Be respectively the first elementary winding N
P1With the second elementary winding N
P2Electric current; i
D1Be magnetic reset diode D
1Electric current; t
0～t
4Be the time.
Fig. 3～Fig. 6 is respectively the equivalent circuit theory figure of input series connection push-pull forward converter of the present invention in switch mode 1～switch mode 4.
Label title in Fig. 1 and Fig. 3～Fig. 6: V
InBe DC power supply (input voltage); C
1, C
2Be respectively first, second dividing potential drop electric capacity; S
1, S
2Be respectively first, second power switch pipe; D
1Be the magnetic reset diode; T is main power transformer; N
P1, N
P2Be respectively first, second elementary winding of main power transformer; N
S1, N
S2Be respectively first, second secondary winding of main power transformer; L
R1, L
R2Be respectively first, second inductance; D
2, D
3Be respectively first, second rectifier diode; C
oBe output filter capacitor; R
oBe output loading; V
oThe expression output voltage.
Embodiment
As shown in Figure 1, input series connection push-pull forward converter topology of the present invention, its structure 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, magnetic reset diode D
1, first inductance L
R1, second inductance L
R2, the first rectifier diode D
2, the second rectifier diode D
3, output filter capacitor C
oWith main power transformer T, wherein: 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, DC power supply V
InNegative pole connect the second dividing potential drop capacitor C respectively
2An end and second power switch tube S
2Source electrode, first power switch tube S
1Source electrode connect first inductance L respectively
R1An end and magnetic reset diode D
1Negative electrode, second power switch tube S
2Drain electrode connect second inductance L respectively
R2An end and magnetic reset diode D
1Anode; Main power transformer T comprises the first elementary winding N
P1, the second elementary winding N
P2, the first secondary winding N
S1With second subprime winding N
S2, the first elementary winding N
P1End of the same name connect first inductance L
R1The other end, the second elementary winding N
P2End of the same name connect second inductance L
R2The other end, the first elementary winding N
P1Non-same polarity connect the second elementary winding N respectively
P2Non-same polarity, the first dividing potential drop capacitor C
1The other end and the second dividing potential drop capacitor C
2The other end, the first secondary winding N
S1End of the same name connect the first rectifier diode D
2Anode, the first secondary winding N
S1Non-same polarity connect second subprime winding N respectively
S2End of the same name, output filter capacitor C
oAn end and output loading R
oAn end, second subprime winding N
S2Non-same polarity connect the second rectifier diode D
3Anode, the second rectifier diode D
3Negative electrode connect the first rectifier diode D respectively
2Negative electrode, output filter capacitor C
oThe other end and output loading R
oThe other end, output filter capacitor C
oBe output loading R
oProvide energy, first inductance L on the former limit of main power transformer T
R1With second inductance L
R2The leakage inductance that contains two former limits of transformer.
The control mode of input series connection push-pull forward converter of the present invention is as follows: power switch tube S
1With S
2Staggered 180 ° of conductings, duty ratio equate and near 0.5, adopt open loop control.
Be the main oscillogram of input series connection push-pull forward converter of the present invention as shown in Figure 2, below in conjunction with Fig. 2～Fig. 6 the concrete operation principle of the present invention and the course of work be described, make the following assumptions earlier before the explanation: a, circuit have reached stable state; B, two dividing potential drop capacitor C
1And C
2Enough big and equal, can see V as
In/ 2 voltage source; C, two inductance L
R1And L
R2Be the former limit of transformer series inductance, it has comprised the leakage inductance on two former limits of transformer respectively; D, main power transformer T satisfy: N
P1=N
P2, N
S1=N
S2E, power switch pipe are made of perfect switch, inverse parallel diode and electric capacity parallel connection.
1, switch mode 1 is (corresponding to [t among Fig. 2
0, t
1], its equivalent electric circuit is as shown in Figure 3)
t
0Constantly, S
1Conducting, S
2Turn-off, transformer magnetizing current forward increases, D
2Conducting, input voltage is by elementary winding N
P1To the load transfer energy.t
0Constantly, S
1Turn-off inductance L
R1With L
R2Beginning is with switching tube parasitic capacitance resonance, S
1Both end voltage resonance rises, and works as S
1Both end voltage rises to V
In, S
2Both end voltage reduces at 0 o'clock, and this mode finishes.
2, switch mode 2 is (corresponding to [t among Fig. 2
1, t
2], its equivalent electric circuit is as shown in Figure 4)
t
1Constantly, S
2The parasitic body diode conducting, inductance L
R1With L
R2Electric current respectively linear decline and linear rising the under the acting in conjunction of input and output voltage, the switching tube both end voltage remains unchanged.
3, switch mode 3 is (corresponding to [t among Fig. 2
2, t
3], its equivalent electric circuit is as shown in Figure 5)
t
2Constantly, S
2No-voltage is open-minded, inductance L
R1With L
R2Electric current respectively linear decline and linear rising the under the acting in conjunction of input and output voltage, when two inductance L
R1With L
R2When electric current equates, S
2Parasitic body diode end D
2End, this mode finishes.
4, switch mode 4 is (corresponding to [t among Fig. 2
3, t
4], its equivalent electric circuit is as shown in Figure 6)
t
3Constantly, D
2End, transformer voltage begins oppositely.D
3Conducting, transformer begin oppositely excitatory, and magnetizing current begins reverse increase, and input voltage is by primary winding N
P2Provide energy to load, work as S
1During shutoff, this mode finishes.
t
4Constantly, converter begins half work period in addition, and its course of work and preceding half period are similar, not repeated description.
Analysis by the front as can be seen, two forward converter interleaved series are adopted on the former limit of transformer among the present invention, saved the magnetic reset winding of conventional forward converter, use diode to finish magnetic reset, not only circuit structure is simple, there is not bridge arm direct pass, and realized the zero voltage switch of switching tube, therefore have very high efficient.
Claims (1)
1. an input series connection push-pull forward converter is characterized in that: comprise 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), magnetic reset diode (D
1), the first inductance (L
R1), the second inductance (L
R2), the first rectifier diode (D
2), the second rectifier diode (D
3), output filter capacitor (C
o) and main power transformer (T), wherein: the first dividing potential drop electric capacity (C
1) and the second dividing potential drop electric capacity (C
2) equate 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, DC power supply (V
In) negative pole connect the second dividing potential drop electric capacity (C respectively
2) an end and the second power switch pipe (S
2) source electrode, the first power switch pipe (S
1) source electrode connect the first inductance (L respectively
R1) an end and magnetic reset diode (D
1) negative electrode, the second power switch pipe (S
2) drain electrode connect the second inductance (L respectively
R2) an end and magnetic reset diode (D
1) anode; Main power transformer (T) comprises the first elementary winding (N
P1), the second elementary winding (N
P2), the first secondary winding (N
S1) and second subprime winding (N
S2), the first elementary winding (N
P1) the number of turn equal the second elementary winding (N
P2) the number of turn, the first secondary winding (N
S1) the number of turn equal second subprime winding (N
S2) the number of turn, the first elementary winding (N
P1) end of the same name connect the first inductance (L
R1) the other end, the second elementary winding (N
P2) end of the same name connect the second inductance (L
R2) the other end, the first elementary winding (N
P1) non-same polarity connect the second elementary winding (N respectively
P2) non-same polarity, the first dividing potential drop electric capacity (C
1) the other end and the second dividing potential drop electric capacity (C
2) the other end, the first secondary winding (N
S1) end of the same name connect the first rectifier diode (D
2) anode, the first secondary winding (N
S1) non-same polarity connect second subprime winding (N respectively
S2) end of the same name, output filter capacitor (C
o) an end and output loading (R
o) an end, second subprime winding (N
S2) non-same polarity connect the second rectifier diode (D
3) anode, the second rectifier diode (D
3) negative electrode connect the first rectifier diode (D respectively
2) negative electrode, output filter capacitor (C
o) the other end and output loading (R
o) the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100328119A CN101562398B (en) | 2009-06-03 | 2009-06-03 | Input series connection push-pull forward converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100328119A CN101562398B (en) | 2009-06-03 | 2009-06-03 | Input series connection push-pull forward converter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101562398A CN101562398A (en) | 2009-10-21 |
| CN101562398B true CN101562398B (en) | 2010-12-29 |
Family
ID=41221051
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100328119A Expired - Fee Related CN101562398B (en) | 2009-06-03 | 2009-06-03 | Input series connection push-pull forward converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101562398B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102103157B (en) * | 2009-12-21 | 2013-11-06 | 艾默生网络能源系统北美公司 | Direct voltage isolated sampling device |
| CN101834541B (en) * | 2010-06-02 | 2013-03-13 | 英飞特电子（杭州）股份有限公司 | Constant current circuit with high power factor |
| CN102013809A (en) * | 2010-12-30 | 2011-04-13 | 南京航空航天大学 | Double-line double-tube normal shock direct current converter with transformer with two secondary sides |
| CN102013810A (en) * | 2010-12-30 | 2011-04-13 | 南京航空航天大学 | Double-circuit double-tube forward shock combined converter with output midpoint |
| CN105024567A (en) * | 2015-07-30 | 2015-11-04 | 华中科技大学 | Direct current switch type current source |
| US9847724B2 (en) * | 2015-10-06 | 2017-12-19 | Keithley Instruments, Llc | Power supply having reduced transformer commutation noise |
| CN105553272A (en) * | 2015-12-09 | 2016-05-04 | 燕山大学 | Straight-through prevention half-bridge LLC resonance converter |
| CN110212772A (en) * | 2019-05-29 | 2019-09-06 | 中国船舶工业系统工程研究院 | It is a kind of to plug into the high direct voltage translation circuit of box for seabed |
| CN112910270A (en) * | 2021-04-09 | 2021-06-04 | 重庆星座汽车科技有限公司 | Double forward converter circuit |
| CN114290905B (en) * | 2021-12-31 | 2024-05-24 | 银川威力传动技术股份有限公司 | Active discharging circuit of motor controller |
-
2009
- 2009-06-03 CN CN2009100328119A patent/CN101562398B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101562398A (en) | 2009-10-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101562398B (en) | Input series connection push-pull forward converter | |
| CN101783588B (en) | Passive and nondestructive clamping single-phase high-gain converter | |
| CN100433525C (en) | Soft switch back exciting converter used for solar energy photovoltaic generation incorporate in power network | |
| CN101976953B (en) | Isolated bidirectional DC-DC converter realized by coupling inductor | |
| CN105141138B (en) | A kind of voltage-multiplying type Sofe Switch type recommends DC converter | |
| CN100379132C (en) | Soft-switch PWM interleaving shunt-wound two-transistor forward power converter | |
| CN101018017A (en) | Mixed three level resonance DC convertor and dual shift phase control method | |
| CN101714815A (en) | Boost type converter for realizing high-gain voltage multiplication by coupling inductors | |
| CN101951154B (en) | Isolation type active clamping interleaving paralleled bidirectional DC-DC converter | |
| CN101847936B (en) | Soft switching full-bridge direct-current converter with lag leg connected with auxiliary network in parallel | |
| CN103151932A (en) | Buck / Boost integration type three-port direct current converter and control method thereof | |
| CN105553272A (en) | Straight-through prevention half-bridge LLC resonance converter | |
| CN105119496A (en) | Wide input range three-level LLC resonant converter and level switching control method | |
| CN103595258A (en) | Boost type soft switching resonant converter and frequency fixing control method thereof | |
| CN105245113A (en) | Anti-conduction-through soft switch push-pull LLC resonance converter | |
| CN100358227C (en) | Zero voltage switch three lever double tube positive exciting DC converter with clamp diode | |
| CN104009645A (en) | Series-parallel connection mixed type double-output LLC resonant converter | |
| CN103051179A (en) | High step-up ratio voltage doubling structure passive lossless clamped converter | |
| TWM447043U (en) | High efficient high step-up dc converter with interleaved soft switching mechanism | |
| CN108631604A (en) | A kind of environmental protection dual transformer type zero current resonance three-level DC converter | |
| CN103066837A (en) | High gain voltage-multiplying structure active lossless clamping converter | |
| CN203434860U (en) | High-gain boost converter based on coupling inductor and voltage transfer technology | |
| CN101635510B (en) | Complex forward DC converter | |
| CN102931843A (en) | Soft-switch full-bridge direct-current transformer of self-driven active auxiliary network | |
| CN109149952A (en) | A kind of current-resonance type Sofe Switch recommends DC converter |
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 | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20130603 |