CN104242626A - Boost-flyback converter with built-in switch coupling inductor - Google Patents
Boost-flyback converter with built-in switch coupling inductor Download PDFInfo
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- CN104242626A CN104242626A CN201410550851.3A CN201410550851A CN104242626A CN 104242626 A CN104242626 A CN 104242626A CN 201410550851 A CN201410550851 A CN 201410550851A CN 104242626 A CN104242626 A CN 104242626A
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- 230000008878 coupling Effects 0.000 title claims abstract description 13
- 238000010168 coupling process Methods 0.000 title claims abstract description 13
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 13
- 238000004804 winding Methods 0.000 claims abstract description 53
- 230000000694 effects Effects 0.000 claims description 4
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003990 capacitor Substances 0.000 abstract 3
- 230000002459 sustained effect Effects 0.000 description 12
- 238000011084 recovery Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 230000003071 parasitic effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
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Abstract
The invention belongs to the technical field of power electronics, and relates to a boost-flyback converter with a built-in switch coupling inductor, which comprises a boost module and a flyback module; the positive end of a direct current power supply in the boosting module is connected with the homonymous end of a first winding, the negative end of the direct current power supply is connected with the source electrode of a power switch tube, the negative end of an output capacitor and one end of a load, the synonym end of the first winding is connected with the drain electrode of the power switch tube, the anode of a clamping diode and one end of a third winding, the other end of the third winding is connected with the anode of a fly-wheel diode, the cathode of the fly-wheel diode is connected with the cathode of the clamping diode, the anode of the output capacitor and the flyback module, the homonymous end of a second winding in the flyback module is connected with the cathode of the output capacitor and the boosting module, the synonym end is connected with the anode; the circuit has the advantages of reasonable overall structural design, safety, reliability, low cost, environmental friendliness and great application potential.
Description
Technical field:
The invention belongs to electric and electronic technical field, relate to a kind of DC-DC converter, particularly a kind of boosting-anti exciting converter of built-in switch coupling inductance.
Background technology:
At present, the scarcity of non-renewable energy resources seriously governs economic development, therefore has higher requirement to the utilization of electric energy.Traditional booster converter realizes high voltage gain by increasing duty ratio, but when high voltage exports, the voltage stress that power switch pipe bears is larger, and there is reverse-recovery problems in output diode, this will reduce the efficiency of converter, and therefore the application of booster converter receives certain restriction.In the prior art, anti exciting converter generally adopts flyback transformer technology to realize high voltage gain, but the leakage inductance of the Transformer Winding of this technology easily causes due to voltage spikes on power switch pipe, the loss of switching tube turn-on and turn-off is larger, transducer effciency is caused to reduce, therefore, this technology is generally only applied to voltage-dropping type middle low power occasion.And the integrated boost-anti exciting converter in existing routine techniques is combined thus realize high step-up ratio flyback transformer and booster converter, but this method is when duty ratio is certain, realize larger voltage gain, the inductance value of flyback transformer primary side and primary side and leakage inductance will double, and this can reduce the efficiency of converter; Flyback transformer primary side will bear high current gain simultaneously, thus increases the current stress of switching tube and diode, causes the rising of converter cost.Therefore seek one and can not only realize high step-up ratio and high efficiency, and the little converter of diode reverse recovery problem is the task that row expert and scientific research personnel inquire into always.
Summary of the invention:
The object of the invention is to the defect overcoming prior art existence, seek to design boosting-anti exciting converter that a kind of built-in switch coupling inductance is provided, realize the expansion of voltage gain, realize the soft of power switch pipe to open and soft switching simultaneously, and improve the reverse-recovery problems of diode, thus improve the efficiency of converter and reduce system cost.
In order to realize foregoing invention object, the boosting-anti exciting converter of a kind of built-in switch coupling inductance that the present invention relates to comprises a boost module and a flyback module; Boost module comprises DC power supply, the first winding, the tertiary winding, power switch pipe, fly-wheel diode, clamp diode and the first output capacitance; DC power anode end is connected with the Same Name of Ends of the first winding, and the negative pole end of DC power supply is connected with one end of load with the source electrode of power switch pipe, the negative pole end of the first output capacitance; The different name end of the first winding is connected with one end of the tertiary winding with the drain electrode of power switch pipe, the anode of clamp diode; The other end of the tertiary winding is connected with the anode of fly-wheel diode; The negative electrode of fly-wheel diode is connected with flyback module with the positive pole of the negative electrode of clamp diode, the first output capacitance; Power switch pipe is the field of electric force effect transistor (MOSFET) with anti-also diode; Flyback module comprises the second winding, fly-wheel diode and the second output capacitance, and the Same Name of Ends of the second winding is connected with boost module with the negative pole of the second output capacitance, and different name end is connected with the anode of fly-wheel diode; The negative electrode of fly-wheel diode is connected with the other end of load with the positive pole of the second output capacitance; First winding of boost module and the second winding composition flyback transformer, the first winding in boost module and the tertiary winding composition coupling inductance of corresponding flyback module.
The present invention, compared with existing integrated boost-anti exciting converter, realizing the expansion of converter voltage gain, avoiding circuit working in the situation of limit duty ratio by introducing coupling inductance; Under power switch pipe is operated in Sofe Switch environment, reduce the turn-on and turn-off loss of switching tube; The leakage inductance of coupling inductance can optimize the reverse recovery characteristic of fly-wheel diode, reduces diode reverse recovery losses; Its circuit integrity reasonable in design, safe and reliable, electric energy loss is few, and cost is low, power density and efficiency higher, environmental friendliness, has larger application potential.
Accompanying drawing illustrates:
Fig. 1 is the circuit structure principle schematic of the converter that the present invention relates to.
Fig. 2 is the equivalent circuit structure principle schematic of the converter that the present invention relates to.
Fig. 3 is the work different conditions electrical principles structural representation of the converter that the present invention relates to.
Embodiment:
Below by embodiment, also the present invention is described further by reference to the accompanying drawings.
Embodiment:
As shown in Figure 1, the boosting-anti exciting converter of its built-in switch coupling inductance formed comprises a boost module and a flyback module to the electrical principles schematic diagram of the present embodiment; Boost module comprises DC power supply V
g, the first winding L
1, tertiary winding L
3, power switch tube S, sustained diode
1, clamp diode D
3with the first output capacitance C
1; DC power supply V
gpositive terminal and the first winding L
1same Name of Ends be connected, DC power supply V
gthe source electrode of negative pole end and power switch tube S, the first output capacitance C
1negative pole end and load R
lone end be connected; First winding L
1different name end and the drain electrode of power switch tube S, clamp diode D
3anode and tertiary winding L
3one end be connected; Tertiary winding L
3the other end and sustained diode
1anode be connected; Sustained diode
1negative electrode and clamp diode D
3negative electrode, the second output capacitance C
2positive pole be connected with flyback module; Power switch tube S is the field of electric force effect transistor (MOSFET) with anti-also diode; Flyback module is by the second winding L
2, sustained diode
2with the second output capacitance C
2be electrically connected to form, the second winding L
2same Name of Ends and the second output capacitance C
2negative pole be connected with boost module, different name end and sustained diode
2anode be connected; Sustained diode
2negative electrode and the second output capacitance C
2positive pole and load R
lthe other end be connected; First winding L of boost module
1with the second winding L of corresponding flyback module
2composition flyback transformer, the first winding L in boost module
1with tertiary winding L
3composition coupling inductance.
The specific works process of the present embodiment as shown in Figure 3, in a switch periods, have 6 kinds of mode of operations, wherein: in Fig. 3, in (a) ~ Fig. 3, (b) is operating state during switching tube S conducting, in Fig. 3, in (c) ~ Fig. 3, (f) is operating state when switching tube S turns off; State as shown in (a) in Fig. 3, power switch tube S starts conducting, due to leakage inductance L
2k, L
3kexistence, sustained diode
1and D
2forward conduction, clamp diode D
3reverse cut-off; DC power supply V in boost module
gto the first winding L
1charging, leakage inductance L
3kwith the first output capacitance C
1give load R together
lpower supply; Flyback module leakage inductance L
2kto the second output capacitance C
2with load R
lpower supply; State as shown in (b) in Fig. 3, power switch tube S is conducting still, leakage inductance L
2k, L
3kthe energy ezpenditure stored is complete, sustained diode
1, D
2reverse cut-off, clamp diode D
3still oppositely end, DC power supply V in boost module
gcontinue to charge to the first winding L 1, the second output capacitance C in the first output capacitance C1 and flyback module
2give load R together
lpower supply; State as shown in (c) in Fig. 3, power switch tube S starts to turn off, sustained diode
1, D
2and clamp diode D
3still oppositely end, DC power supply V in boost module
g, the first winding L
1to drain-source parasitic capacitance C
sconstant current charge, parasitic capacitance C
sboth end voltage U
dsrise, thus realize power switch tube S zero voltage turn-off, the first output capacitance C in boost module
1with the second output capacitance C in flyback module
2continue to load R
lpower supply; State as Suo Shi (d) in Fig. 3, power switch tube S still turns off, as drain-source parasitic capacitance C
sboth end voltage U
dsrise to V
c1+ V
dtime, clamp diode D
3start forward conduction, simultaneously sustained diode
1and D
2start conducting, DC power supply V in boost module
g, the first winding L
1, tertiary winding L
3give the first output capacitance C together
1charging and give load R
lpower supply; Second winding L in flyback module
2with the second output capacitance C
2also load R is given together
lpower supply; Wherein V
c1for the first output capacitance C in boost module
1both end voltage, V
dfor clamp diode D
3conduction voltage drop; State as Suo Shi (e) in Fig. 3, power switch tube S still turns off, along with the first output capacitance C in boost module
1both end voltage V
c1rising, drain-source parasitic capacitance C
sboth end voltage U
dsbe less than V
c1+ V
d, clamp diode D
3reverse cut-off, sustained diode
1and D
2still conducting, DC power supply V in boost module
g, the first winding L
1with tertiary winding L
3continue to the first output capacitance C
1charging and give load R
lpower supply, the second winding L in flyback module
2with the second output capacitance C
2continue to load R
lpower supply; State as Suo Shi (f) in Fig. 3, power switch tube S and clamp diode D
3still turn off, sustained diode
1and D
2still conducting, DC power supply V in boost module
g, the first winding L
1, tertiary winding L
3with the first output capacitance C
1give the second output capacitance C in flyback module together
2charging and give load R
lpower supply.
The converter that the present embodiment relates to effect in side circuit equipment is excellent, fully achieves design objective, reaches object of the present invention.
Claims (1)
1. boosting-anti exciting converter of built-in switch coupling inductance, is characterized in that comprising a boost module and a flyback module; Boost module comprises DC power supply, the first winding, the tertiary winding, power switch pipe, fly-wheel diode, clamp diode and the first output capacitance; DC power anode end is connected with the Same Name of Ends of the first winding, and the negative pole end of DC power supply is connected with one end of load with the source electrode of power switch pipe, the negative pole end of the first output capacitance; The different name end of the first winding is connected with one end of the tertiary winding with the drain electrode of power switch pipe, the anode of clamp diode; The other end of the tertiary winding is connected with the anode of fly-wheel diode; The negative electrode of fly-wheel diode is connected with flyback module with the positive pole of the negative electrode of clamp diode, the first output capacitance; Power switch pipe is the field of electric force effect transistor with anti-also diode; Flyback module comprises the second winding, fly-wheel diode and the second output capacitance, and the Same Name of Ends of the second winding is connected with boost module with the negative pole of the second output capacitance, and different name end is connected with the anode of fly-wheel diode; The negative electrode of fly-wheel diode is connected with the other end of load with the positive pole of the second output capacitance; First winding of boost module and the second winding composition flyback transformer, the first winding in boost module and the tertiary winding composition coupling inductance of corresponding flyback module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550851.3A CN104242626A (en) | 2014-10-16 | 2014-10-16 | Boost-flyback converter with built-in switch coupling inductor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550851.3A CN104242626A (en) | 2014-10-16 | 2014-10-16 | Boost-flyback converter with built-in switch coupling inductor |
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| Publication Number | Publication Date |
|---|---|
| CN104242626A true CN104242626A (en) | 2014-12-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410550851.3A Pending CN104242626A (en) | 2014-10-16 | 2014-10-16 | Boost-flyback converter with built-in switch coupling inductor |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119487A (en) * | 2015-09-23 | 2015-12-02 | 青岛理工大学 | Coupling inductance boost conversion device with switch inductance |
| CN108270358A (en) * | 2016-12-30 | 2018-07-10 | 中国矿业大学 | A kind of dual output Buck converters with coupling inductance |
| CN109327136A (en) * | 2018-11-29 | 2019-02-12 | 青岛理工大学 | Three-level boost type direct current conversion topology based on coupling winding unit |
| CN109921674A (en) * | 2019-04-12 | 2019-06-21 | 青岛理工大学 | Improved Cockcroft-Walton single-stage voltage-raising inverter |
| CN110224601A (en) * | 2019-07-12 | 2019-09-10 | 哈尔滨理工大学 | A kind of high-gain Boost and its working method based on three winding coupling inductance |
| CN113114040A (en) * | 2021-03-25 | 2021-07-13 | 北京交通大学 | High-gain forward-flyback laminated boost converter |
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| US5636114A (en) * | 1995-11-30 | 1997-06-03 | Electronic Measurements, Inc. | Lossless snubber circuit for use in power converters |
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2014
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105119487A (en) * | 2015-09-23 | 2015-12-02 | 青岛理工大学 | Coupling inductance boost conversion device with switch inductance |
| CN108270358A (en) * | 2016-12-30 | 2018-07-10 | 中国矿业大学 | A kind of dual output Buck converters with coupling inductance |
| CN109327136A (en) * | 2018-11-29 | 2019-02-12 | 青岛理工大学 | Three-level boost type direct current conversion topology based on coupling winding unit |
| CN109327136B (en) * | 2018-11-29 | 2024-02-06 | 南京信息工程大学 | Three-level boosting type direct current conversion topology based on coupling winding unit |
| CN109921674A (en) * | 2019-04-12 | 2019-06-21 | 青岛理工大学 | Improved Cockcroft-Walton single-stage voltage-raising inverter |
| CN109921674B (en) * | 2019-04-12 | 2023-10-31 | 南京信息工程大学 | Improved Cockcroft-Walton single-stage boosting inverter |
| CN110224601A (en) * | 2019-07-12 | 2019-09-10 | 哈尔滨理工大学 | A kind of high-gain Boost and its working method based on three winding coupling inductance |
| CN110224601B (en) * | 2019-07-12 | 2021-03-09 | 哈尔滨理工大学 | High-gain Boost converter based on three-winding coupling inductor and working method thereof |
| 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: 20141224 |
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