CN108258903A - Transless high-gain DC-DC converter - Google Patents
Transless high-gain DC-DC converter Download PDFInfo
- Publication number
- CN108258903A CN108258903A CN201810006654.3A CN201810006654A CN108258903A CN 108258903 A CN108258903 A CN 108258903A CN 201810006654 A CN201810006654 A CN 201810006654A CN 108258903 A CN108258903 A CN 108258903A
- Authority
- CN
- China
- Prior art keywords
- capacitance
- diode
- connect
- anode
- cathode
- 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.)
- Pending
Links
Classifications
-
- 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
- H02M3/156—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 with automatic control of output voltage or current, e.g. switching regulators
Abstract
The invention discloses a kind of transless high-gain DC DC converters, including input power Vin, input power VinAnode connect inductance L respectively1One end and capacitance C2One end, inductance L1The other end connect sustained diode respectively2Anode, sustained diode4Anode and capacitance C3One end, capacitance C2The other end connect sustained diode respectively4Cathode and sustained diode3Anode, sustained diode3Cathode connect capacitance C respectively3The other end and sustained diode1Anode, sustained diode1Cathode connect capacitance C respectively1One end and inductance L2One end, inductance L2The other end connect output rectifier diode D respectivelyoAnode, sustained diode2Cathode and switching tube S drain electrode, 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 present invention can significantly improve efficiency and the ratio of gains.
Description
Technical field
The present invention relates to booster converter, more particularly to transless high-gain DC-DC 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 in the application for being dedicated to researching and developing 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, a large amount of boost converter, which is developed, meets these applications, not
In same converter, traditional BOOST converter theoretically can improve voltage gain by improving duty ratio.It is but practical
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.
Invention content
Goal of the invention：The object of the present invention is to provide one kind efficiency and the ratio of gains can be significantly improved in middle large-power occasions
Transless high-gain DC-DC converter.
Technical solution：To reach this purpose, the present invention uses following technical scheme：
Transless high-gain DC-DC converter of the present invention, including input power Vin, input power VinJust
Pole connects inductance L respectively1One end and capacitance C2One end, inductance L1The other end connect sustained diode respectively2Anode,
Sustained diode4Anode and capacitance C3One end, capacitance C2The other end connect sustained diode respectively4Cathode and continuous
Flow diode D3Anode, sustained diode3Cathode connect capacitance C respectively3The other end and sustained diode1Anode,
Sustained diode1Cathode connect capacitance C respectively1One end and inductance L2One end, inductance L2The other end connect respectively it is defeated
Go out rectifier diode DoAnode, sustained diode2Cathode and switching tube S drain electrode, output rectifier diode DoCathode
Connection output capacitance C 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 transless high-gain DC-DC converters, compared with prior art, tool
There is following advantageous effect：
1) present invention employs transformerless circuit structures, compared with traditional booster circuit, are significantly improving
On the basis of boost capability, there is no the losses of transformer, significantly improve the working efficiency of circuit；
2) present invention has merged asymmetric boosting unit on the basis of cascade boost converter, and traditional symmetrical
The boosting unit of structure compares, and with the increase of duty ratio, which has superior boost voltage performance；
3) in the present invention, when duty is higher, the working efficiency of boost capability and circuit has more superior converter
Advantage compared with traditional booster converter, is more suitable for applying in middle large-power occasions.
Description of the drawings
Fig. 1 is the circuit diagram of DC-DC converter in the specific embodiment of the invention；
Fig. 2 is the equivalent circuit diagram of DC-DC converter in the specific embodiment of the invention；
Fig. 3 is the modal graph of DC-DC converter in the specific embodiment of the invention；
Fig. 4 is the isoboles of the first switch mode of DC-DC converter in the specific embodiment of the invention；
Fig. 5 is the isoboles of second of switch mode of DC-DC converter in the specific embodiment of the invention；
Fig. 6 is the switching tube S both end voltages of DC-DC converter, output voltage V in the specific embodiment of the invention0With it is defeated
Go out diode DoThe oscillogram of both end voltage；
Fig. 7 is the switching tube S both end voltages of DC-DC converter, inductance L in the specific embodiment of the invention1Both end voltage
And inductance L1Electric current oscillogram；
Fig. 8 is the switching tube S both end voltages of DC-DC converter, inductance L in the specific embodiment of the invention2Both end voltage
And inductance L2Electric current oscillogram；
Fig. 9 is switching tube S both end voltages, the sustained diode of DC-DC converter in the specific embodiment of the invention4Two
Terminal voltage and sustained diode3The oscillogram of both end voltage.
Specific embodiment
Technical scheme of the present invention is further introduced with attached drawing With reference to embodiment.
Present embodiment discloses a kind of transless high-gain DC-DC converter, as shown in Figure 1, including input
Power supply Vin, input power VinAnode connect inductance L respectively1One end and capacitance C2One end, inductance L1The other end difference
Connect sustained diode2Anode, sustained diode4Anode and capacitance C3One end, capacitance C2The other end connect respectively
Sustained diode4Cathode and sustained diode3Anode, sustained diode3Cathode connect capacitance C respectively3It is another
End and sustained diode1Anode, sustained diode1Cathode connect capacitance C respectively1One end and inductance L2One end, electricity
Feel L2The other end connect output rectifier diode D respectivelyoAnode, sustained diode2Cathode and switching tube S drain electrode,
Export rectifier diode DoCathode connect output capacitance C respectivelyoOne end and load resistance R one end, output capacitance CoIt is another
One 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 diagram of DC-DC converter in the specific embodiment of the invention, as shown in Figure 2.Input power VinElectricity
It flows for iin, input power VinVoltage be Vin, inductance L1Electric current isInductance L1The voltage of both sides isInductance L2Electric current
ForInductance L2The voltage of both sides isExport rectifier diode DoElectric current beExport rectifier diode DoThe electricity at both ends
It presses and isThe electric current for flowing through switching tube S is iS, the voltage at switching tube S both ends is VS, diode D1Electric current beDiode D1
The voltage at both ends isDiode D2Electric current beDiode D2The voltage at both ends isDiode D3Electric current be
Diode D3The voltage at both ends isDiode D4Electric current beDiode D4The voltage at both ends isCapacitance C1Electric current
ForCapacitance C1The voltage at both ends isCapacitance C2Electric current beCapacitance C2The voltage at both ends isCapacitance C3Electric current beCapacitance C3The voltage at both ends isOutput capacitance CoElectric current beOutput capacitance CoThe voltage at both ends isLoad electricity
The electric current for hindering R is io。
Fig. 3 is the modal graph of DC-DC converter.The course of work of DC-DC converter is divided into 2 switch mode, respectively
For the first switch mode to second of 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 sustained diode2And sustained diode3Open-minded, the circulating pathway of electric current is as shown in figure 4, power supply passes through capacitance C2With it is continuous
Flow diode D3Simultaneously to inductance L1With capacitance C3Charging, inductance L1Storage energy, the voltage of both sides are begun setting up, capacitance C1To electricity
Feel L2Charging, 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 is in t2When turn off, together
When, sustained diode1, sustained diode4With output rectifier diode DoIt is open-minded, diode D2、D3Shutdown, the circulation way of electric current
Diameter is as shown in figure 5, power supply, inductance L1, inductance L2With capacitance C3It releases energy simultaneously and gives load R, and to capacitance C1, capacitance C2With
Output capacitance CoCharging, capacitance C1, capacitance C2With output capacitance CoStore energy.
Gain expressions can be obtained from the above analysis is：
Wherein D is the duty ratio of switching tube S.
When converter is according to the first switch mode to second of switch Modality work, switching tube S, inductance L in circuit1、
Inductance L2, output rectifier diode DoBoth end voltage, sustained diode4Both end voltage, sustained diode3The wave of both end voltage
Shape is described in detail below：
In figure 6, input voltage Vin=24V, output voltage VoThe drain-source both end voltage difference V of=100V, switching tube SDS's
Ordinate be 50 volts/cell, output voltage VoOrdinate is 50 volts/cell, exports rectifier diode DoBoth end voltage
Ordinate is 50 volts/cell.
In the figure 7, input voltage Vin=24V, output voltage VoThe drain-source both end voltage difference V of=100V, switching tube SDS's
Ordinate be 50 volts/cell, inductance L1VoltageOrdinate be 20 volts/cell, inductance L1Electric currentOrdinate is
2.5 peaces/cell.
In fig. 8, input voltage Vin=24V, output voltage VoThe drain-source both end voltage difference V of=100V, switching tube SDS's
Ordinate be 50 volts/cell, inductance L2VoltageOrdinate be 50 volts/cell, inductance L2Electric currentOrdinate is 1
Peace/cell.
In fig.9, input voltage Vin=24V, output voltage VoThe drain-source both end voltage difference V of=100V, switching tube SDS's
Ordinate be 50 volts/cell, sustained diode4Both end voltageOrdinate be 20 volts/cell, sustained diode3Both ends
VoltageOrdinate is 20 volts/cell.
Claims (1)
1. transless high-gain DC-DC converter, it is characterised in that：Including input power Vin, input power VinAnode point
It Lian Jie not inductance L1One end and capacitance C2One end, inductance L1The other end connect sustained diode respectively2Anode, afterflow
Diode D4Anode and capacitance C3One end, capacitance C2The other end connect sustained diode respectively4Cathode and afterflow two
Pole pipe D3Anode, sustained diode3Cathode connect capacitance C respectively3The other end and sustained diode1Anode, afterflow
Diode D1Cathode connect capacitance C respectively1One end and inductance L2One end, inductance L2The other end connect respectively output it is whole
Flow diode DoAnode, sustained diode2Cathode and switching tube S drain electrode, output rectifier diode DoCathode difference
Connect output capacitance CoOne end and load resistance R one end, output capacitance CoThe other end, load resistance R the other end, open
Close the source electrode and capacitance C of pipe S1The other end connect input power V respectivelyinCathode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006654.3A CN108258903A (en) | 2018-01-04 | 2018-01-04 | Transless high-gain DC-DC converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810006654.3A CN108258903A (en) | 2018-01-04 | 2018-01-04 | Transless high-gain DC-DC converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108258903A true CN108258903A (en) | 2018-07-06 |
Family
ID=62724935
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810006654.3A Pending CN108258903A (en) | 2018-01-04 | 2018-01-04 | Transless high-gain DC-DC converter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108258903A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978322A (en) * | 2016-06-29 | 2016-09-28 | 华南理工大学 | Switch capacitor type high-gain quasi Z source DC-DC converter |
| CN106712503A (en) * | 2017-02-13 | 2017-05-24 | 华南理工大学 | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor |
| CN107346939A (en) * | 2017-05-04 | 2017-11-14 | 北京信息科技大学 | A kind of new quasi- Z sources DC/DC converters |
-
2018
- 2018-01-04 CN CN201810006654.3A patent/CN108258903A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105978322A (en) * | 2016-06-29 | 2016-09-28 | 华南理工大学 | Switch capacitor type high-gain quasi Z source DC-DC converter |
| CN106712503A (en) * | 2017-02-13 | 2017-05-24 | 华南理工大学 | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor |
| CN107346939A (en) * | 2017-05-04 | 2017-11-14 | 北京信息科技大学 | A kind of new quasi- Z sources DC/DC converters |
Non-Patent Citations (3)
| Title |
|---|
| D SIVARAJ等: "High gain quadratic boost switched capacitor converter for photovoltaic applications", 《IEEE INTERNATIONAL CONFERENCE ON POWER, CONTROL, SIGNALS AND INSTRUMENTATION ENGINEERING》 * |
| MANXIN CHEN等: "Hybrid switched-capacitor quadratic boost converters with very high DC gain and low voltage stress on their semiconductor devices, 20160918, IEEE Energy Conversion Congress and Exposition", 《IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION》 * |
| 王蕊: "改进型二次型DC/DC变换器的研究", 《中国优秀硕士学位论文全文数据库》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108183609A (en) | A kind of cascade connection type DC/DC converters of the asymmetric boosting unit of photovoltaic system | |
| CN105471253B (en) | T-shaped coupling inductance network boost converter | |
| CN107070223B (en) | A kind of two-way DC/DC converter of the high-power high step-up ratio of non-isolation type and control method | |
| CN114629349B (en) | Improved high-frequency high-step-up ratio SEPIC converter based on switching inductance | |
| CN108880240A (en) | Compound double asymmetric voltage doubling unit DC-DC converters | |
| CN108736715A (en) | Buck DC-DC converter | |
| Pires et al. | A single-switch DC/DC buck-boost converter with extended output voltage | |
| Lee et al. | Design and control of novel topology for photovoltaic DC/DC converter with high efficiency under wide load ranges | |
| CN107425709B (en) | Boost power factor correcting converter | |
| CN108092510A (en) | Dual bootstrap cascade connection type dcdc converter | |
| CN215934730U (en) | DC-DC converter with high step-up ratio | |
| Hao et al. | Single-switch boost converter with extremely high step-up voltage gain | |
| Chub et al. | Improved switched-inductor quasi-switched-boost inverter with low input current ripple | |
| Mirtalaee et al. | Boost high step-up dc/dc converter with coupled inductors and diode-capacitor Technique | |
| CN108599560A (en) | More bootstrapping cascade connection type DC-DC converters of two capacitor-clampeds of photovoltaic system | |
| CN105978322B (en) | A kind of quasi- sources Z DC-DC converter of switching capacity type high-gain | |
| CN107612349A (en) | The common ground type isolation quasi- Z source converters of high-gain of fuel cell and photovoltaic generation | |
| CN108429452A (en) | A kind of photovoltaic system quadratic form is booted DC-DC converter more | |
| CN102545670A (en) | Novel power-level topological structure of micro inverter | |
| CN108988632B (en) | A kind of switch converters | |
| CN104967304B (en) | One kind is based on no bridge CUK isolated form Three Phase Power Factor Correction Converters | |
| CN103107698A (en) | Multi-level active network boost converter | |
| Liu et al. | A novel high step-up converter with a switched-coupled-inductor-capacitor structure for sustainable energy systems | |
| CN108092509A (en) | A kind of single bootstrapping cascade connection type dcdc converter | |
| CN108258903A (en) | Transless high-gain DC-DC converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180706 |
|
| RJ01 | Rejection of invention patent application after publication |