CN207368876U - A kind of quasi- boost switching DC/DC converters based on switched inductors - Google Patents
A kind of quasi- boost switching DC/DC converters based on switched inductors Download PDFInfo
- Publication number
- CN207368876U CN207368876U CN201720582626.7U CN201720582626U CN207368876U CN 207368876 U CN207368876 U CN 207368876U CN 201720582626 U CN201720582626 U CN 201720582626U CN 207368876 U CN207368876 U CN 207368876U
- Authority
- CN
- China
- Prior art keywords
- diode
- inductance
- cathode
- switch pipe
- anode
- 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
Landscapes
- Dc-Dc Converters (AREA)
Abstract
The utility model provides a kind of quasi- boost switching DC/DC converters based on switched inductors, including the first diode, first switch pipe, direct-current input power supplying, the first inductance, the second diode, the 3rd diode, the 4th diode, the second inductance, the 5th diode, capacitance, the 6th diode, second switch pipe, output capacitance and load；The cathode of first diode and the source electrode of the anode of direct-current input power supplying and first switch pipe connect；The cathode of the direct-current input power supplying is connected with one end of the first inductance, the anode of the second diode and the 6th diode anode；The cathode of 3rd diode is connected with the cathode of one end of the second inductance, the second diode；The other end of second inductance is connected with the drain electrode of the 4th diode cathode, the anode, second switch pipe of the 5th diode；The utility model is simple in structure, and control is simple, has higher steady-state gain, suitable for high-gain DC voltage transformation occasion.
Description
Technical field
It the utility model is related to DC/DC converters field, and in particular to a kind of quasi- boost switching DC/ based on switched inductors
DC converters.
Background technology
As energy efficiency is increasingly taken seriously, generation of electricity by new energy achieves significant progress, but as solar energy, wind
The output DC voltage that can be generated electricity with clean energy resourcies such as fuel cells is generally relatively low, cannot be used directly for inversion grid connection or some high
Low output voltage is carried out lifting by the load supplying of voltage class, the DC/DC converters therefore, it is necessary to high-gain.Traditional
Boost but will realize high-gain because simple in structure be commonly used for booster circuit, the duty cycle of its switching tube often compared with
Greatly, the raising of this energy conversion efficiency for being unfavorable for system.In recent years the quasi- boost switching network proposed, contains only with an inductance
With a capacitance, it is possible to achieve the boost capability identical with tradition Z source networks, and quasi- boost switching network is used for DC-DC electricity
Lu Zhong, carries out it appropriate transformation, with reference to corresponding switched inductors pressure build-up technique, its boost capability can be made to obtain further
Lifting.
Utility model content
The purpose of the utility model is to overcome above-mentioned the deficiencies in the prior art, propose that a kind of standard based on switched inductors is opened
Boosting DC/DC converters are closed, concrete technical scheme is as follows.
A kind of quasi- boost switching DC/DC converters based on switched inductors, including it is the first diode, first switch pipe, straight
Flow input power, the first inductance, the second diode, the 3rd diode, the 4th diode, the second inductance, the 5th diode, electricity
Appearance, the 6th diode, second switch pipe, output capacitance and load；The cathode and direct-current input power supplying of first diode
Anode connected with the source electrode of first switch pipe；One end of the cathode of the direct-current input power supplying and the first inductance, the two or two
The anode of pole pipe and the connection of the 6th diode anode；The other end of first inductance and the anode of the 3rd diode, the 4th
The anode connection of diode；The cathode of 3rd diode is connected with the cathode of one end of the second inductance, the second diode；Described
The other end of second inductance is connected with the drain electrode of the 4th diode cathode, the anode, second switch pipe of the 5th diode；Described
One end of output capacitance, the cathode of the 6th diode are connected with one end of load；The cathode and first of 5th diode
The drain electrode of switching tube is connected with one end of capacitance；The anode of the other end of the capacitance and the first diode, second switch pipe
The other end of source electrode, the other end of output capacitance and load connects.
The specific connection mode of the utility model circuit is：The cathode of first diode and direct-current input power supplying
Anode is connected with the source electrode of first switch pipe；One end of the cathode of the direct-current input power supplying and the first inductance, the two or two pole
The anode of pipe and the connection of the 6th diode anode；The other end of first inductance and the anode of the 3rd diode, the four or two
The anode connection of pole pipe；The cathode of 3rd diode is connected with the cathode of one end of the second inductance, the second diode；Described
The other end of two inductance is connected with the drain electrode of the 4th diode cathode, the anode, second switch pipe of the 5th diode；Described is defeated
Go out one end of capacitance, the cathode of the 6th diode is connected with one end of load；The cathode of 5th diode is opened with first
The drain electrode for closing pipe is connected with one end of capacitance；The source of the anode of the other end of the capacitance and the first diode, second switch pipe
The other end of pole, the other end of output capacitance and load connects.
The converter stable state export when voltage gain G be：
Wherein VoRepresent the output voltage of converter load-side, ViFor input dc power potential source, D is duty cycle.
Compared with prior art, the utility model circuit has the following advantages that and technique effect：Compared to traditional Z sources liter
DC/DC converters and the quasi- Z sources DC/DC converters of switched inductors type are pressed in the case of identical duty cycle and input voltage, tool
There is an output voltage of higher, i.e., under the conditions of identical input voltage and output voltage, the utility model circuit only needs less
Low step voltage can be risen to high-grade voltage by duty cycle, and simple in structure, two switching tube synchronous workings, control
Convenient, the voltage stress of switching tube and diode is small, and work efficiency is high, therefore the utility model circuit has and is widely applied very much
Prospect.
Brief description of the drawings
Fig. 1 is a kind of quasi- boost switching DC/DC converter circuit figures based on switched inductors.
Fig. 2 is the voltage and current waveform of a switch periods main element.
Fig. 3 a, Fig. 3 b be circuit shown in Fig. 1 simultaneously turn on respectively in first switch pipe and second switch pipe, first switch pipe
When being simultaneously turned off with second switch pipe, the circuit modal graph in a switch periods.
Fig. 4 is that converter described in the example of the utility model boosts with the quasi- Z sources DC/DC converters of switched inductors type, Z sources
The V of DC/DC converters and Boosto/ViThe oscillogram changed with duty cycle D.
Fig. 5 is the MATLAB/simulink emulation of the utility model circuit correlated variables of steady operation in D=0.25
Oscillogram.
Embodiment
With reference to embodiments and attached drawing is described in further detail the utility model explanation, but the utility model
Embodiment not limited to this.It is noted that if the following process or parameter for having not special detailed description, is art technology
Personnel can refer to the prior art understand or realize.
The Basic Topological of the utility model and each main element voltage and current reference direction are as shown in Figure 1.In order to divide
Analysis is convenient, and the device in circuit structure is accordingly to be regarded as ideal component.A kind of quasi- boost switching DC/DC conversion based on switched inductors
Device, it includes the first diode D1, first switch pipe S1, direct-current input power supplying Vin, the first inductance L1, the second diode D2, the 3rd
Diode D3, the 4th diode D4, the second inductance L2, the 5th diode D5, capacitance C, the 6th diode D6, second switch pipe S2、
Output capacitance CoWith load RL。
The drive signal of first, second switching tube is set in this example as Vg, input voltage Vi, output voltage Vo, electricity
Appearance voltage is VC, the first inductance, the second inductive current are iL1、iL2, the 6th diode current is iD6, first, the three, the 5th 2
Pole pipe electric current is iD1、iD3、iD5, the second, the 4th diode current is iD2、iD4.Accounting for when setting the conducting of first, second switching tube
Empty ratio is D, sets output voltage gain as G, the configuration switch cycle is Ts.Oscillogram is as shown in Figure 2.
A kind of quasi- boost switching DC/DC converters based on switched inductors, in a switch periods (t0~t2) in not same order
2 operation modes of section, are described as follows respectively：
1 (t of operation mode0~t1)：As shown in Figure 3a, first, second switching tube synchronization action, its driving voltage VgFrom low
Level is changed into high level, and the conducting of first, second switching tube, first, the three, the 5th diodes, which bear backward voltage, to be ended, second,
Four, the 6th diodes bear forward voltage conducting, direct-current input power supplying VinWith capacitance C by first, second switching tube to the
First, the second induction charging, while by the 6th diode to output capacitance CoWith load RLPower supply.
2 (t of operation mode1~t2)：As shown in Figure 3b, first, second switching tube synchronization action, its driving voltage VgFrom height
Level is changed into low level, the shut-off of first, second switching tube, and first, the three, the 5th diodes bear forward voltage and turn on, second,
Four, the 6th diodes bear backward voltage cut-off, direct-current input power supplying VinPass through first, the 3rd, with first, second inductance
Five diodes charge to capacitance C, while output capacitance CoTo load RLPower supply.
Analyzed more than, since first, second inductance size is the same, with voltage-second balance principle, i.e. inductive drop exists
Average value in one switch periods is zero, therefore obtains formula (1), and input voltage V is obtained by formula (1)iWith capacitance voltage VCRelation
Formula (2).In the section of switching tube conducting, output voltage VoEqual to input voltage ViWith capacitance voltage VCThe sum of, so according to relation
Formula (2) can further obtain output voltage VoWith input voltage ViRelational expression be formula (3).
When then a kind of quasi- boost switching DC/DC converters stable state based on switched inductors described in the utility model exports
Voltage gain G is：
The stable state of traditional Boost, Z sources boosting DC/DC converters and the quasi- Z sources DC/DC converters of switched inductors type
Gain is 1/ (1-D), (1-D)/(1-2D) and (1+D)/(1-3D) (D is duty cycle), this example circuit with traditional Boost with becoming
Parallel operation, Z sources boosting DC/DC converters and the quasi- Z sources DC/DC converters of switched inductors type steady-state gain compare figure as shown in figure 4,
As seen from the figure, in the case where duty cycle D is no more than 0.33, output voltage gain G can reach very the utility model circuit
Greatly, hence it is evident that higher than the voltage gain of other two kinds of converters.Additionally, due to the switching tube synchronization action of the utility model circuit, only
Need all the way drive signal can realize.
With ViExemplified by=10V, duty cycle D=0.25, the simulation result of correlated variables in the utility model circuit is given
As shown in Figure 5.During D=0.25, corresponding output voltage gain G=6, capacitance voltage VC=50V, opens switch tube voltage stress VS1
=VS2=50V, output voltage Vo=60V.
In conclusion the utility model proposes a kind of quasi- boost switching DC/DC converters based on switched inductors, structure
Simply, control is simple, has higher steady-state gain, suitable for non-isolation type high-gain DC voltage transformation occasion.
Above-described embodiment is the preferable embodiment of the utility model, but the embodiment of the utility model and from described
The limitation of embodiment, it is other it is any for made under the Spirit Essence of the utility model and principle change, modify, replace
Generation, combination, simplify, and should be equivalent substitute mode, is included within the scope of protection of the utility model.
Claims (2)
1. a kind of quasi- boost switching DC/DC converters based on switched inductors, it is characterised in that including the first diode（D 1）,
One switching tube（S 1）, direct-current input power supplying（V in）, the first inductance（L 1）, the second diode（D 2）, the 3rd diode（D 3）, the 4th
Diode（D 4）, the second inductance（L 2）, the 5th diode（D 5）, capacitance（C）, the 6th diode（D 6）, second switch pipe（S 2）, it is defeated
Go out capacitance（C o）And load（R L）；First diode（D 1）Cathode and direct-current input power supplying（Vin）Anode and first
Switching tube（S 1）Source electrode connection；The direct-current input power supplying（Vin）Cathode and the first inductance（L 1）One end, the two or two
Pole pipe（D 2）Anode and the 6th diode（D 6）Anode connects；First inductance（L 1）The other end and the 3rd diode
（D 3）Anode, the 4th diode（D 4）Anode connection；3rd diode（D 3）Cathode and the second inductance（L 2）One end,
Second diode（D 2）Cathode connection；Second inductance（L 2）The other end and the 4th diode（D 4）Cathode, the five or two
Pole pipe（D 5）Anode, second switch pipe（S 2）Drain electrode connection；The output capacitance（C o）One end, the 6th diode
（D 6）Cathode and load（R L）One end connection；5th diode（D 5）Cathode and first switch pipe（S 1）Leakage
Pole and capacitance（C）One end connection；The capacitance（C）The other end and the first diode（D 1）Anode, second switch pipe（S 2）
Source electrode, output capacitance（C o）The other end and load（R L）The other end connect.
A kind of 2. quasi- boost switching DC/DC converters based on switched inductors according to claim 1, it is characterised in that when
First switch pipe, second switch pipe simultaneously turn on, and the first diode, the 3rd diode, the 5th diode bear backward voltage and cut
Only, the second diode, the 4th diode, the 6th diode bear forward voltage conducting, and direct-current input power supplying and capacitance pass through the
One switching tube, second switch pipe give first, second induction charging, while are supplied by the 6th diode to output capacitance and load
Electricity；When first switch pipe, second switch pipe simultaneously turn off, the first diode, the 3rd diode, the 5th diode bear positive electricity
Pressure conducting, the second diode, the 4th diode, the 6th diode bear backward voltage cut-off, direct-current input power supplying and the first electricity
Sense, the second inductance give capacitance to charge by the first diode, the 3rd diode, the 5th diode, while output capacitance is to load
Power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720582626.7U CN207368876U (en) | 2017-05-24 | 2017-05-24 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720582626.7U CN207368876U (en) | 2017-05-24 | 2017-05-24 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207368876U true CN207368876U (en) | 2018-05-15 |
Family
ID=62425064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720582626.7U Expired - Fee Related CN207368876U (en) | 2017-05-24 | 2017-05-24 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207368876U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104590A (en) * | 2017-05-24 | 2017-08-29 | 华南理工大学 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
-
2017
- 2017-05-24 CN CN201720582626.7U patent/CN207368876U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107104590A (en) * | 2017-05-24 | 2017-08-29 | 华南理工大学 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206698111U (en) | It is a kind of using switched inductors and the quasi- boost switching DC DC converters of switching capacity | |
| CN105262362B (en) | High-gain Buck Boost integrated forms inverters and control method | |
| CN101958660B (en) | Dual-Sepic buck-boost output parallel combined inverter | |
| CN106374770A (en) | Input and output common-ground boost-buck photovoltaic grid-connected inverter and control method thereof | |
| CN106712503A (en) | Quasi-switch boost DC-DC converter employing switching inductor and switching capacitor | |
| CN107104596A (en) | A kind of quasi- boost switching DC/DC converters of the high-gain of low voltage stress | |
| CN107104590A (en) | A kind of quasi- boost switching DC/DC converters based on switched inductors | |
| CN110224601A (en) | A kind of high-gain Boost and its working method based on three winding coupling inductance | |
| CN106130352A (en) | The micro-inverter of intermediate current type double tube positive exciting and numerical control device thereof | |
| CN104009633A (en) | Current continuous type high-gain DC-DC converter circuit | |
| CN108616224A (en) | A kind of single-phase seven electrical level inverter of booster type | |
| CN207368879U (en) | A kind of quasi- boost switching DC/DC converters of the high-gain of low voltage stress | |
| CN203911753U (en) | Zero-voltage switch-off interleaved parallel DC/DC converter | |
| CN107634656A (en) | A kind of quasi- Z sources DC DC converters of isolated form high-gain suitable for photovoltaic generation | |
| CN106787900B (en) | Boosting gird-connected inverter and its control method | |
| CN109672332A (en) | A kind of zero ripple DC-DC converter of single tube high-gain | |
| CN109462333A (en) | A kind of source continuous input current active switch capacitor Z boost chopper | |
| CN207368876U (en) | A kind of quasi- boost switching DC/DC converters based on switched inductors | |
| CN107612349A (en) | The common ground type isolation quasi- Z source converters of high-gain of fuel cell and photovoltaic generation | |
| CN106602872A (en) | Cascaded voltage lifting quasi-Z source converter | |
| CN209200934U (en) | A kind of direct current tri-lever boosting converter merging coupling inductance technology | |
| CN106787728A (en) | A kind of quasi- boost switching DC DC converters of switching capacity type | |
| CN103595240A (en) | Device and method for reducing boosting amplitude of Boost type PFC converter | |
| CN104967304B (en) | One kind is based on no bridge CUK isolated form Three Phase Power Factor Correction Converters | |
| CN208862745U (en) | A kind of source continuous input current active switch capacitor Z boost chopper |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180515 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |