CN108092506A - A kind of single bootstrapping grade Square-type high-gain converter - Google Patents
A kind of single bootstrapping grade Square-type high-gain converter Download PDFInfo
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- CN108092506A CN108092506A CN201711314187.2A CN201711314187A CN108092506A CN 108092506 A CN108092506 A CN 108092506A CN 201711314187 A CN201711314187 A CN 201711314187A CN 108092506 A CN108092506 A CN 108092506A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
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- Rectifiers (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a kind of single bootstrapping grade Square-type high-gain converter, including input power Vin, input power VinAnode connection inductance L1One end, inductance L1The other end connect sustained diode respectively1Anode and sustained diode2Anode, sustained diode1Cathode connect inductance L respectively2One end, capacitance C1One end and sustained diode3Anode, inductance L2The other end connect capacitance C respectively2One end, sustained diode2Cathode and switching tube S drain electrode, capacitance C2The other end connect sustained diode respectively3Cathode and output rectifier diode DoAnode, output rectifier diode DoCathode connect output capacitance C respectivelyoOne end and load resistance R one end, output capacitance CoThe other end, the other end of load resistance R, the source electrode of switching tube S and capacitance C1The other end connect input power V respectivelyinCathode.The converter of the present invention can improve efficiency and the ratio of gains.
Description
Technical field
The present invention relates to booster converter, more particularly to a kind of single bootstrapping grade Square-type high-gain converter.
Background technology
With increasingly exhausted and environment for human survival the worsening of traditional fossil energy, the regenerative resource of clean type
Development arrived extremely urgent stage, countries in the world are all being directed to researching and developing the application of new energy, wherein too
It is positive to have been obtained for relatively broad application with wind energy.But for these systems, how to be incorporated into the power networks, meet in power grid
High voltage needs to be still sixty-four dollar question.At present, substantial amounts of boost converter, which is developed, meets these applications, not
In same converter, traditional BOOST converter theoretically can improve voltage gain by improving duty cycle.It is but actual
In, due to the limitation of parasitic parameter, very high voltage gain can not be realized.According to the topological structure of cascade connection type, device
The problem of inefficient caused by number of packages amount increase, can highlight again.
The content of the invention
Goal of the invention：The object of the present invention is to provide a kind of single bootstrapping grade Square-type that can improve efficiency and the ratio of gains is high
Gain changer.
Technical solution：To reach this purpose, the present invention uses following technical scheme：
Single bootstrapping grade Square-type high-gain converter of the present invention, including input power Vin, input power VinJust
Pole connection inductance L1One end, inductance L1The other end connect sustained diode respectively1Anode and sustained diode2Sun
Pole, sustained diode1Cathode connect inductance L respectively2One end, capacitance C1One end and sustained diode3Anode, electricity
Feel L2The other end connect capacitance C respectively2One end, sustained diode2Cathode and switching tube S drain electrode, capacitance C2It is another
One end connects sustained diode respectively3Cathode and output rectifier diode DoAnode, output rectifier diode DoCathode
Output capacitance C is connected respectivelyoOne end and load resistance R one end, output capacitance CoThe other end, load resistance R it is another
End, the source electrode of switching tube S and capacitance C1The other end connect input power V respectivelyinCathode.
Advantageous effect：The invention discloses a kind of single bootstrapping grade Square-type high-gain converters, compared with prior art, tool
There is following advantageous effect：
1) cascade boost circuit is employed, compared with traditional booster circuit, the voltage gain tool of this converter
There is quadratic behavior, there is superior boost performance；
2) Bootstrap capacitance has been merged on the basis of Square-type high-gain converter, has been effectively improved voltage increasing
Benefit, and switching tube S and output rectifier diode DoElectric stress be unaffected；
3) structure of converter does not increase additional switching tube, is not increasing the efficiency of switching loss raising converter
Simultaneously the control of system is also allow easily to realize.
Description of the drawings
Fig. 1 is the circuit diagram of booster converter in the specific embodiment of the invention；
Fig. 2 is the equivalent circuit diagram of booster converter in the specific embodiment of the invention；
Fig. 3 is the modal graph of booster converter in the specific embodiment of the invention；
Fig. 4 is the isoboles of the first switch mode of booster converter in the specific embodiment of the invention；
Fig. 5 is the isoboles of second of switch mode of booster converter in the specific embodiment of the invention；
Fig. 6 is the isoboles of the third switch mode of booster converter in the specific embodiment of the invention；
Fig. 7 is voltage, the output voltage V at the switching tube S both ends of booster converter in the specific embodiment of the inventionoWith it is defeated
Go out diode DoThe oscillogram of the voltage at both ends；
Fig. 8 is voltage, the inductance L at the switching tube S both ends of booster converter in the specific embodiment of the invention1Electric current and
Inductance L1The oscillogram of the voltage at both ends；
Fig. 9 is voltage, the inductance L at the switching tube S both ends of booster converter in the specific embodiment of the invention2Electric current and
Inductance L2The oscillogram of the voltage at both ends；
Figure 10 is voltage, the diode D at the switching tube S both ends of booster converter in the specific embodiment of the invention1Both ends
Voltage and diode D2The oscillogram of the voltage at both ends；
Figure 11 is voltage, the output capacitance C at the switching tube S both ends of booster converter in the specific embodiment of the inventiono's
Electric current and diode D3The oscillogram of the voltage at both ends.
Specific embodiment
Technical scheme is further introduced With reference to embodiment.
Present embodiment discloses a kind of single bootstrapping grade Square-type high-gain converter, as shown in Figure 1, including input
Power supply Vin, input power VinAnode connection inductance L1One end, inductance L1The other end connect sustained diode respectively1's
Anode and sustained diode2Anode, sustained diode1Cathode connect inductance L respectively2One end, capacitance C1One end and
Sustained diode3Anode, inductance L2The other end connect capacitance C respectively2One end, sustained diode2Cathode and switch
The drain electrode of pipe S, capacitance C2The other end connect sustained diode respectively3Cathode and output rectifier diode DoAnode, it is defeated
Go out rectifier diode DoCathode connect output capacitance C respectivelyoOne end and load resistance R one end, output capacitance CoIt is another
End, the other end of load resistance R, the source electrode of switching tube S and capacitance C1The other end connect input power V respectivelyinCathode.
Wherein, switching tube S is MOSFET or IGBT.
The equivalent circuit of switching tube S is parasitic capacitance Cp, as shown in Figure 2.The electric current of input power is iin, input power
Voltage is Vin, inductance L1Electric current isInductance L1The voltage of both sides isInductance L2Electric current beInductance L2The voltage of both sides
ForExport rectifier diode DoElectric current beExport rectifier diode DoThe voltage at both ends isFlow through switching tube S's
Electric current is iS, the voltage at switching tube S both ends is VS, diode D1Electric current beDiode D1The voltage at both ends isTwo poles
Pipe D2Electric current beDiode D2The voltage at both ends isDiode D3Electric current beDiode D3The voltage at both ends isCapacitance C1Electric current beCapacitance C1The voltage at both ends isCapacitance C2Electric current beCapacitance C2The voltage at both ends isOutput capacitance CoElectric current beOutput capacitance CoThe voltage at both ends isThe electric current of load resistance R is io。
Fig. 3 is the modal graph of booster converter.The course of work of booster converter is divided into 3 switch mode, is respectively the
For a kind of switch mode to the third switch mode, resistance R is load, is described in detail below：
The first switch mode, [t in corresponding diagram 30,t1]：Shown in equivalent circuit Fig. 4, in t0Moment opens switching tube S,
Meanwhile diode D2Open-minded, the circulating pathway of electric current is as shown in figure 4, inductance L1Storage energy, the voltage of both sides are begun setting up, electricity
Hold C1Give inductance L2It charges, inductance L2Store energy, output capacitance CoGive load R power supplies.
Second of switch the mode, [t in corresponding diagram 31,t2]：Shown in equivalent circuit Fig. 5, switching tube S and diode D2、D3
Conducting, the circulating pathway of electric current is as shown in figure 5, power supply continues to give inductance L1It charges, inductance L1Continue to store energy, meanwhile, capacitance
C1Pass through diode D3The circuit formed with switching tube S is simultaneously to inductance L2With capacitance C2It charges, inductance L2With capacitance C2It stores up together
Energy is deposited, voltage continues to raise, output capacitance CoGive load R power supplies.
The third switch mode, [t in corresponding diagram 32,t3]：Shown in equivalent circuit Fig. 6, switching tube S is in t2When turn off, together
When, diode D1、DoIt is open-minded, diode D2、D3Shut-off, the circulating pathway of electric current is as shown in fig. 6, power supply, inductance L1, inductance L2With
Capacitance C2It releases energy simultaneously to load, and to capacitance C1With output capacitance CoIt charges, capacitance C1With output capacitance CoStore energy
Amount.
Gain expressions can be obtained from the above analysis is：
Wherein D is the duty cycle of switching tube S.
When converter is according to the first switch mode to the third switch Modality work, switching tube S, inductance L in circuit1、
Inductance L2, output diode DoBoth end voltage, diode D1Both end voltage, diode D2Both end voltage, output capacitance CoElectric current, two
Pole pipe D3The waveform of both end voltage is described in detail below
In the figure 7, input voltage Vin=24V, output voltage VoThe voltage difference V at the drain-source both ends of=100V, switching tube SDS
Ordinate for 50 volts/cell, output voltage VoOrdinate be 50 volts/cell, output diode DoBoth end voltageIt is vertical
Coordinate is 20 volts/cell.
In fig. 8, input voltage Vin=24V, output voltage VoThe voltage difference V at the drain-source both ends of=100V, switching tube SDS
Ordinate for 50 volts/cell, inductance L1Electric currentOrdinate be 0.5 peace/cell, inductance L1VoltageOrdinate
For 20 volts/cell.
In fig.9, input voltage Vin=24V, output voltage VoThe voltage difference V at the drain-source both ends of=100V, switching tube SDS
Ordinate for 50 volts/cell, inductance L2Electric currentOrdinate be 0.5 peace/cell, inductance L2VoltageOrdinate
For 20 volts/cell.
In Fig. 10, input voltage Vin=24V, output voltage VoThe voltage difference V at the drain-source both ends of=100V, switching tube SDS
Ordinate for 50 volts/cell, diode D2Both end voltageOrdinate be 50 volts/cell, diode D1Both end voltageOrdinate is 20 volts/cell.
In fig. 11, input voltage Vin=24V, output voltage VoThe voltage difference V at the drain-source both ends of=100V, switching tube SDS
Ordinate for 50 volts/cell, output capacitance CoElectric currentOrdinate be 1 peace/cell, diode D3Both end voltageIt is vertical
Coordinate is 50 volts/cell.
Claims (1)
1. a kind of single bootstrapping grade Square-type high-gain converter, it is characterised in that：Including input power Vin, input power VinJust
Pole connection inductance L1One end, inductance L1The other end connect sustained diode respectively1Anode and sustained diode2Sun
Pole, sustained diode1Cathode connect inductance L respectively2One end, capacitance C1One end and sustained diode3Anode, electricity
Feel L2The other end connect capacitance C respectively2One end, sustained diode2Cathode and switching tube S drain electrode, capacitance C2It is another
One end connects sustained diode respectively3Cathode and output rectifier diode DoAnode, output rectifier diode DoCathode
Output capacitance C is connected respectivelyoOne end and load resistance R one end, output capacitance CoThe other end, load resistance R it is another
End, the source electrode of switching tube S and capacitance C1The other end connect input power V respectivelyinCathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314187.2A CN108092506A (en) | 2017-12-12 | 2017-12-12 | A kind of single bootstrapping grade Square-type high-gain converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711314187.2A CN108092506A (en) | 2017-12-12 | 2017-12-12 | A kind of single bootstrapping grade Square-type high-gain converter |
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| Publication Number | Publication Date |
|---|---|
| CN108092506A true CN108092506A (en) | 2018-05-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039333A (en) * | 2020-08-07 | 2020-12-04 | 中南大学 | Non-isolated single-tube square boosting direct-current converter and control method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710126A (en) * | 2012-06-08 | 2012-10-03 | 上海电力学院 | High-gain type step-up direct current converter |
| CN104734188A (en) * | 2015-03-24 | 2015-06-24 | 中国科学院广州能源研究所 | Voltage high-gain photovoltaic grid-connected inverter main circuit topology |
-
2017
- 2017-12-12 CN CN201711314187.2A patent/CN108092506A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710126A (en) * | 2012-06-08 | 2012-10-03 | 上海电力学院 | High-gain type step-up direct current converter |
| CN104734188A (en) * | 2015-03-24 | 2015-06-24 | 中国科学院广州能源研究所 | Voltage high-gain photovoltaic grid-connected inverter main circuit topology |
Non-Patent Citations (2)
| Title |
|---|
| J. LEYVA-RAMOS,ET.AL.: "Switching regulator using a quadratic boost converter for wide DC conversion ratios", 《IET POWER ELECTRONICS》 * |
| MANXIN CHEN,ET.AL.: "Hybrid switched-capacitor quadratic boost converters with very high DC gain and low voltage stress on their semiconductor devices", 《IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112039333A (en) * | 2020-08-07 | 2020-12-04 | 中南大学 | Non-isolated single-tube square boosting direct-current converter and control method thereof |
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Application publication date: 20180529 |
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