CN103618458A - Three-winding transformer secondary side output series forward and flyback double-voltage converter - Google Patents
Three-winding transformer secondary side output series forward and flyback double-voltage converter Download PDFInfo
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- CN103618458A CN103618458A CN201310704425.6A CN201310704425A CN103618458A CN 103618458 A CN103618458 A CN 103618458A CN 201310704425 A CN201310704425 A CN 201310704425A CN 103618458 A CN103618458 A CN 103618458A
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- 238000004804 winding Methods 0.000 title claims abstract description 73
- 230000035939 shock Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 description 50
- 238000005516 engineering process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The invention discloses a three-winding transformer secondary side output series forward and flyback double-voltage converter. The three-winding transformer secondary side output series forward and flyback double-voltage converter comprises a primary side input circuit, a secondary side forward rectification circuit and a secondary side flyback rectification circuit. The secondary side forward rectification circuit and the secondary side flyback rectification circuit of the converter provide energy alternatively for a load, so that the output voltage is doubled, and the ripple wave is reduced; a primary side active clamping circuit achieves zero-voltage switching of a switching tube, and the secondary side leakage inductance and the capacitance resonance create a diode zero-current turn-off condition, and the efficiency is improved; the whole circuit uses few active power devices, is simple in structure, and is low in expenditure; the control scheme is simple, and is easy to achieve.
Description
One, technical field
The present invention relates to a kind of soft switch straight convertor, by the positive and negative sharp voltage doubling rectifing circuit of three-winding transformer secondary output series connection, can realize secondary normal shock rectification circuit and flyback rectification circuit and alternately to load, provide energy, output voltage multiplication, belongs to the straight convertor in electrical energy changer.
Two, background technology
Along with the development of power electronic technology, straight convertor has obtained studying widely and applying, and high reliability, high power density, small size are the targets of converter development always.With respect to traditional two-winding transformer voltage doubling rectifing circuit, the positive and negative sharp voltage doubling rectifing circuit of three-winding transformer secondary output series connection can be so that output voltage multiplication, the feature that simultaneously retains former limit switching tube, the soft switch of secondary diode, realizes when increasing power output that machine volume is little, lightweight, conversion efficiency advantages of higher.
Three, summary of the invention
1, goal of the invention: the object of the invention is to provide and a kind ofly can realizes output voltage multiplication, high efficiency, low ripple straight convertor.
2, technical scheme: in order to solve the problems of the technologies described above, the positive and negative sharp voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention comprises former limit input circuit 1, secondary normal shock rectification circuit 2, secondary flyback rectification circuit 3.Former limit input circuit 1 comprises the first switching tube S
1, second switch pipe S
2, transformer primary side winding P, the first capacitor C
1; Secondary normal shock rectification circuit 2 comprises transformer the first secondary winding N
1, transformer the first secondary winding leakage inductance L
1, the second capacitor C
2, the first diode D
1, the second diode D
2with the 4th capacitor C
4; Secondary flyback rectification circuit 3 comprises transformer the second secondary winding N
2, transformer the second secondary winding leakage inductance L
2, the 3rd capacitor C
3, the 3rd diode D
3, the 4th diode D
4with the 5th capacitor C
5.The positive and negative sharp voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention is characterised in that, the Same Name of Ends of transformer primary side winding P and the first capacitor C
1one end be connected with the positive pole of external power supply E; The first capacitor C
1the other end and the first switching tube S
1drain electrode be connected; The first switching tube S
1source electrode and non-same polarity and the second switch pipe S of transformer primary side winding P
2drain electrode connect; Second switch pipe S
2source electrode be connected with the negative pole of external power supply E; Transformer the first secondary winding N
1same Name of Ends and transformer the first secondary winding leakage inductance L
1one end is connected; Transformer the first secondary winding leakage inductance L
1the other end and the second capacitor C
2one end be connected; The second capacitor C
2the other end, the first diode D
1negative electrode and the 4th capacitor C
4one end be connected with one end of external load R; Transformer the first secondary winding N
1non-same polarity and the first diode D
1anode and the second diode D
2negative electrode be connected; The second diode D
2anode, the 3rd diode D
3negative electrode, the 4th capacitor C
4the other end, the 3rd capacitor C
3one end and the 5th capacitor C
5one end connect; Transformer the second secondary winding N
2non-same polarity and transformer the second secondary winding leakage inductance L
2one end is connected; Transformer the second secondary winding leakage inductance L
2the other end and the 3rd capacitor C
3the other end be connected; Transformer the second secondary winding N
2same Name of Ends and the 3rd diode D
3anode and the 4th diode D
4negative electrode be connected; The 4th diode D
4anode and the 5th capacitor C
5the other end be connected with the other end of external load R.
3, beneficial effect: the positive flyback voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention, tool has the following advantages: (1) secondary normal shock rectification circuit and flyback rectification circuit alternately provide energy to load, ripple is reduced, and output voltage increasing is simultaneously twice; (2) realize high frequency electrical isolation; (3) to realize switch tube zero voltage open-minded for former limit active clamping circuir, and secondary voltage multiplying rectifier is realized diode zero-current switching, has promoted efficiency; (4) it is less, simple in structure that whole circuit is used active power device, and expense is little; (5) control program is simple, is easy to realize.
Four, accompanying drawing explanation
Fig. 1 is the electrical block diagram of the positive flyback voltage multiplying rectifier converter of three-winding transformer secondary of the present invention output series connection, label title: 1. former limit input circuit; 2. secondary normal shock rectification circuit; 3. secondary flyback rectification circuit.
Fig. 2 is each switch mode schematic diagram of circuit of the positive flyback voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention.
Main designation in figure: S
1, S
2---first, second switching tube; C
1～C
5---the first～five electric capacity; T---transformer; P---transformer primary side winding; N
1, N
2---first and second secondary winding of transformer; L
1, L
2---first and second secondary winding leakage inductance of transformer; E---external power supply; D
1～D
4---the first～four diode; R---external load.
Five, embodiment
As shown in Figure 1, this example is the positive flyback voltage multiplying rectifier converter of three-winding transformer secondary output series connection, it is characterized in that the Same Name of Ends of transformer primary side winding P and the first capacitor C
1one end be connected with the positive pole of external power supply E; The first capacitor C
1the other end and the first switching tube S
1drain electrode be connected; The first switching tube S
1source electrode and non-same polarity and the second switch pipe S of transformer primary side winding P
2drain electrode connect; Second switch pipe S
2source electrode be connected with the negative pole of external power supply E; Transformer the first secondary winding N
1same Name of Ends and transformer the first secondary winding leakage inductance L
1one end is connected; Transformer the first secondary winding leakage inductance L
1the other end and the second capacitor C
2one end be connected; The second capacitor C
2the other end, the first diode D
1negative electrode and the 4th capacitor C
4one end be connected with one end of external load R; Transformer the first secondary winding N
1non-same polarity and the first diode D
1anode and the second diode D
2negative electrode be connected; The second diode D
2anode, the 3rd diode D
3negative electrode, the 4th capacitor C
4the other end, the 3rd capacitor C
3one end and the 5th capacitor C
5one end connect; Transformer the second secondary winding N
2non-same polarity and transformer the second secondary winding leakage inductance L
2one end is connected; Transformer the second secondary winding leakage inductance L
2the other end and the 3rd capacitor C
3the other end be connected; Transformer the second secondary winding N
2same Name of Ends and the 3rd diode D
3anode and the 4th diode D
4negative electrode be connected; The 4th diode D
4anode and the 5th capacitor C
5the other end be connected with the other end of external load R.
The thinking of the positive flyback voltage doubling rectifing circuit of three-winding transformer secondary output series connection, output voltage multiplication improves the characteristics such as ripple, stress simultaneously.The mode of output series connection not only can improve circuit gain, the more important thing is, has retained transformer leakage inductance and secondary capacitor resonance, for the soft switch of secondary diode has been created condition, and then reduces loss, eliminates due to voltage spikes.
Accompanying drawing 1 take below as main circuit structure, 2 narrate specific works principle and the operation mode that three-winding transformer secondary of the present invention is exported the positive flyback voltage multiplying rectifier converter of series connection by reference to the accompanying drawings.The voltage magnitude of note external power supply E is U
d; The first capacitor C
1voltage be U
c1; Transformer T primary current is i
1.
Operation mode I: as shown in Fig. 2 (a), second switch pipe S
2conducting, external power supply E voltage U
dbe added in transformer primary side winding P upper, transformer primary side current i
1linear rising, starts to secondary transferring energy; The first diode D now
1oppositely cut-off, transformer the first secondary winding N
1and second capacitor C
2through the second diode D
2zhi Luxiang the 4th capacitor C
4charging, the 4th capacitor C
4with the 5th capacitor C
5to load, R provides energy; While the 4th diode D
4oppositely cut-off, transformer the second secondary winding N
2through the 3rd diode D
3to the 3rd capacitor C
3charging, portion of energy is transferred to the 3rd capacitor C
3.This stage, transformer the first secondary winding leakage inductance L
1with the second capacitor C
2there is resonance, transformer the second secondary winding leakage inductance L
2with the 3rd capacitor C
3resonance occurs, and is the second diode D
2, the 3rd diode D
3created the condition of zero-current switching.This resonance current is amounted to ，Yu Yuan limit, former limit exciting current and is jointly formed transformer primary side electric current.
Operation mode II: as shown in Fig. 2 (b), second switch pipe S
2normally, now first and second secondary winding leakage inductance of transformer L
1, L
2with second and third capacitor C
2, C
3resonant process completes, second and third diode D
2, D
3naturally cut-off, realizes zero-current switching.Load is by the 4th capacitor C
4, the 5th capacitor C
5maintain power supply.Primary current only contains exciting current part, continues to rise to second switch pipe S
2turn-off.
Operation mode III: as shown in Fig. 2 (c), the first switching tube S
1conducting, the first capacitor C
1voltage be U
c1be added in transformer primary side winding P upper, transformer primary side current i
1reverse linear increases, and starts to secondary transferring energy; The 3rd diode D now
3oppositely cut-off, transformer the second secondary winding N
2and second capacitor C
3through the 4th diode D
4zhi Luxiang the 5th capacitor C
5charging, the 4th capacitor C
4with the 5th capacitor C
5to load, R provides energy; While the second diode D
2oppositely cut-off, transformer the first secondary winding N
1through the first diode D
1to the second capacitor C
2charging, portion of energy is transferred to the second capacitor C
2.This stage, transformer the first secondary winding leakage inductance L
1with the second capacitor C
2there is resonance, transformer the second secondary winding leakage inductance L
2with the 3rd capacitor C
3it is the first diode D that resonance occurs
1, the 4th diode D
4created the condition of zero-current switching.This resonance current is amounted to ，Yu Yuan limit, former limit exciting current and is jointly formed transformer primary side electric current.
Operation mode IV: as shown in Fig. 2 (d), the first switching tube S
1normally, now first and second secondary winding leakage inductance of transformer L
1, L
2with second and third capacitor C
2, C
3resonant process completes, first, fourth diode D
1, D
4naturally cut-off, realizes zero-current switching.Load is by the 4th capacitor C
4, the 5th capacitor C
5maintain power supply.Primary current only contains exciting current part, continues oppositely to rise to the first switching tube S
1turn-off.
As seen from the above description, the positive flyback voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention, this converter tool has the following advantages:
(1) secondary normal shock rectification circuit and flyback rectification circuit alternately provide energy to load, and ripple is reduced, and output voltage increasing is simultaneously twice;
(2) realize high frequency electrical isolation;
(3) to realize switch tube zero voltage open-minded for former limit active clamping circuir, and secondary voltage multiplying rectifier is realized diode zero-current switching, has promoted efficiency;
(4) it is less, simple in structure that whole circuit is used active power device, and expense is little;
(5) control program is simple, is easy to realize.
Claims (1)
1. the positive and negative sharp voltage multiplying rectifier converter of three-winding transformer secondary output series connection comprises former limit input circuit (1), secondary normal shock rectification circuit (2), secondary flyback rectification circuit (3).Former limit input circuit (1) comprises the first switching tube (S
1), second switch pipe (S
2), transformer primary side winding (P), the first electric capacity (C
1); Secondary normal shock rectification circuit (2) comprises transformer the first secondary winding (N
1), transformer the first secondary winding leakage inductance (L
1), the second electric capacity (C
2), the first diode (D
1), the second diode (D
2) and the 4th electric capacity (C
4); Secondary flyback rectification circuit (3) comprises transformer the second secondary winding (N
2), transformer the second secondary winding leakage inductance (L
2), the 3rd electric capacity (C
3), the 3rd diode (D
3), the 4th diode (D
4) and the 5th electric capacity (C
5).The positive and negative sharp voltage multiplying rectifier converter of three-winding transformer secondary output series connection of the present invention is characterised in that, the Same Name of Ends of transformer primary side winding (P) and the first electric capacity (C
1) one end be connected with the positive pole of external power supply (E); The first electric capacity (C
1) the other end and the first switching tube (S
1) drain electrode be connected; The first switching tube (S
1) source electrode and non-same polarity and the second switch pipe (S of transformer primary side winding (P)
2) drain electrode connect; Second switch pipe (S
2) source electrode be connected with the negative pole of external power supply (E); Transformer the first secondary winding (N
1) Same Name of Ends and transformer the first secondary winding leakage inductance (L
1) one end is connected; Transformer the first secondary winding leakage inductance (L
1) other end and the second electric capacity (C
2) one end be connected; The second electric capacity (C
2) the other end, the first diode (D
1) negative electrode and the 4th electric capacity (C
4) one end be connected with one end of external load (R); Transformer the first secondary winding (N
1) non-same polarity and the first diode (D
1) anode and the second diode (D
2) negative electrode be connected; The second diode (D
2) anode, the 3rd diode (D
3) negative electrode, the 4th electric capacity (C
4) the other end, the 3rd electric capacity (C
3) one end and the 5th electric capacity (C
5) one end connect; Transformer the second secondary winding (N
2) non-same polarity and transformer the second secondary winding leakage inductance (L
2) one end is connected; Transformer the second secondary winding leakage inductance (L
2) other end and the 3rd electric capacity (C
3) the other end be connected; Transformer the second secondary winding (N
2) Same Name of Ends and the 3rd diode (D
3) anode and the 4th diode (D
4) negative electrode be connected; The 4th diode (D
4) anode and the 5th electric capacity (C
5) the other end be connected with the other end of external load (R).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310704425.6A CN103618458A (en) | 2013-12-20 | 2013-12-20 | Three-winding transformer secondary side output series forward and flyback double-voltage converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310704425.6A CN103618458A (en) | 2013-12-20 | 2013-12-20 | Three-winding transformer secondary side output series forward and flyback double-voltage converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103618458A true CN103618458A (en) | 2014-03-05 |
Family
ID=50169161
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310704425.6A Pending CN103618458A (en) | 2013-12-20 | 2013-12-20 | Three-winding transformer secondary side output series forward and flyback double-voltage converter |
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| Country | Link |
|---|---|
| CN (1) | CN103618458A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507198A (en) * | 2014-11-12 | 2015-04-08 | 天一宏业武汉科技发展有限公司 | Active-clamp forward-flyback push-pull integrated lamp controller |
| CN104578797A (en) * | 2014-12-12 | 2015-04-29 | 西南交通大学 | Method and device for controlling discontinuous mode flyback converter with high power factor and high efficiency |
| CN104917387A (en) * | 2015-06-23 | 2015-09-16 | 杭州中恒派威电源有限公司 | Flyback topology voltage multiplier circuit suitable for LED drive power |
| RU2581600C1 (en) * | 2014-12-23 | 2016-04-20 | Акционерное общество "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" | Two-stroke flyback dc-to-dc converter |
| CN105896993A (en) * | 2016-05-30 | 2016-08-24 | 西安交通大学 | High-gain isolation type direct-current converter for multi-unit diode capacitor network |
| CN106059306A (en) * | 2016-05-30 | 2016-10-26 | 西安交通大学 | Multi-unit diode capacitor network high-gain full-bridge isolated direct current converter |
| CN106549563A (en) * | 2017-01-24 | 2017-03-29 | 杭州中恒派威电源有限公司 | A kind of flyback exports high-voltage diode replacement circuit |
| CN106899219A (en) * | 2015-12-18 | 2017-06-27 | 虹冠电子工业股份有限公司 | For the power converter and its mode of operation of Switching Power Supply |
| CN107222108A (en) * | 2017-06-09 | 2017-09-29 | 金陵科技学院 | A kind of active-clamp DC converter and its control method |
| CN109617208A (en) * | 2018-12-26 | 2019-04-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of medium-high voltage frequency converter DC capacitor pre-charging device |
| CN110649816A (en) * | 2019-09-20 | 2020-01-03 | 广州金升阳科技有限公司 | Step-down switch converter |
| CN113114040A (en) * | 2021-03-25 | 2021-07-13 | 北京交通大学 | High-gain forward-flyback laminated boost converter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060077600A1 (en) * | 2004-09-30 | 2006-04-13 | Sony Corporation | Switching power supply circuit |
| CN102891608A (en) * | 2011-07-21 | 2013-01-23 | 山特电子（深圳）有限公司 | High-efficiency and low-cost forward-flyback DC-DC (direct current-direct current) converter topology |
| CN103078514A (en) * | 2013-01-05 | 2013-05-01 | 浙江大学 | Push-pull converter with voltage multiplying resonance capability |
-
2013
- 2013-12-20 CN CN201310704425.6A patent/CN103618458A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060077600A1 (en) * | 2004-09-30 | 2006-04-13 | Sony Corporation | Switching power supply circuit |
| CN102891608A (en) * | 2011-07-21 | 2013-01-23 | 山特电子（深圳）有限公司 | High-efficiency and low-cost forward-flyback DC-DC (direct current-direct current) converter topology |
| CN103078514A (en) * | 2013-01-05 | 2013-05-01 | 浙江大学 | Push-pull converter with voltage multiplying resonance capability |
Cited By (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104507198A (en) * | 2014-11-12 | 2015-04-08 | 天一宏业武汉科技发展有限公司 | Active-clamp forward-flyback push-pull integrated lamp controller |
| CN104507198B (en) * | 2014-11-12 | 2017-11-07 | 瑞芙贝（武汉）光电科技发展有限公司 | Active clamping forward, flyback recommend integrated lamp controller |
| CN104578797B (en) * | 2014-12-12 | 2017-05-17 | 西南交通大学 | Method and device for controlling discontinuous mode flyback converter with high power factor and high efficiency |
| CN104578797A (en) * | 2014-12-12 | 2015-04-29 | 西南交通大学 | Method and device for controlling discontinuous mode flyback converter with high power factor and high efficiency |
| RU2581600C1 (en) * | 2014-12-23 | 2016-04-20 | Акционерное общество "Научно-производственное объединение автоматики имени академика Н.А. Семихатова" | Two-stroke flyback dc-to-dc converter |
| CN104917387A (en) * | 2015-06-23 | 2015-09-16 | 杭州中恒派威电源有限公司 | Flyback topology voltage multiplier circuit suitable for LED drive power |
| CN111740611A (en) * | 2015-12-18 | 2020-10-02 | 虹冠电子工业股份有限公司 | Power converter for switching power supply and operation mode thereof |
| CN111740611B (en) * | 2015-12-18 | 2021-10-19 | 虹冠电子工业股份有限公司 | Power converter for switching power supply and operation mode thereof |
| CN106899219A (en) * | 2015-12-18 | 2017-06-27 | 虹冠电子工业股份有限公司 | For the power converter and its mode of operation of Switching Power Supply |
| CN106899219B (en) * | 2015-12-18 | 2020-07-28 | 虹冠电子工业股份有限公司 | Power converter for switching power supply and operation mode thereof |
| CN106059306A (en) * | 2016-05-30 | 2016-10-26 | 西安交通大学 | Multi-unit diode capacitor network high-gain full-bridge isolated direct current converter |
| CN106059306B (en) * | 2016-05-30 | 2018-01-19 | 西安交通大学 | A kind of multiple-unit diode capacitance network high-gain full-bridge isolated DC converter |
| CN105896993A (en) * | 2016-05-30 | 2016-08-24 | 西安交通大学 | High-gain isolation type direct-current converter for multi-unit diode capacitor network |
| CN106549563A (en) * | 2017-01-24 | 2017-03-29 | 杭州中恒派威电源有限公司 | A kind of flyback exports high-voltage diode replacement circuit |
| CN107222108A (en) * | 2017-06-09 | 2017-09-29 | 金陵科技学院 | A kind of active-clamp DC converter and its control method |
| CN109617208A (en) * | 2018-12-26 | 2019-04-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七二研究所） | A kind of medium-high voltage frequency converter DC capacitor pre-charging device |
| CN109617208B (en) * | 2018-12-26 | 2022-01-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | DC capacitor pre-charging device of medium-high voltage frequency converter |
| CN110649816A (en) * | 2019-09-20 | 2020-01-03 | 广州金升阳科技有限公司 | Step-down switch converter |
| CN113114040A (en) * | 2021-03-25 | 2021-07-13 | 北京交通大学 | High-gain forward-flyback laminated boost converter |
| CN113114040B (en) * | 2021-03-25 | 2022-06-24 | 北京交通大学 | High-gain forward-flyback laminated boost converter |
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Application publication date: 20140305 |