CN107104590A - 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
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- CN107104590A CN107104590A CN201710371906.8A CN201710371906A CN107104590A CN 107104590 A CN107104590 A CN 107104590A CN 201710371906 A CN201710371906 A CN 201710371906A CN 107104590 A CN107104590 A CN 107104590A
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- diode
- inductance
- switch pipe
- anode
- negative electrode
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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
- H02M3/06—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider
- H02M3/07—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using resistors or capacitors, e.g. potential divider using capacitors charged and discharged alternately by semiconductor devices with control electrode, e.g. charge pumps
Abstract
The present invention 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, electric capacity, the 6th diode, second switch pipe, output capacitance and load；The described negative electrode of the first diode and the source electrode of the negative pole of direct-current input power supplying and first switch pipe are connected；The positive pole of described 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 negative electrode of 3rd diode is connected with the negative electrode of one end of the second inductance, the second diode；The other end of the second described inductance is connected with the drain electrode of the 4th diode cathode, the anode of the 5th diode, second switch pipe；The present invention is simple in construction, and control is simple, with higher steady-state gain, it is adaptable to high-gain DC voltage transformation occasion.
Description
Technical field
The present invention relates to DC/DC converters field, and in particular to a kind of quasi- boost switching DC/DC based on switched inductors becomes
Parallel operation.
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 the clean energy resource such as energy and fuel cell generates electricity is typically relatively low, it is impossible to be directly used in inversion grid connection or some high
The load supplying of voltage class, accordingly, it would be desirable to which low output voltage is carried out lifting by the DC/DC converters of high-gain.Traditional
Boost will realize high-gain because simple in construction be commonly used for booster circuit, the dutycycle 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, only containing with an inductance
With an electric capacity, it is possible to achieve and tradition Z source network identical boost capabilities, and quasi- boost switching network is used for DC-DC electricity
Lu Zhong, appropriate transformation is carried out to it, with reference to corresponding switched inductors pressure build-up technique, its boost capability can be made to obtain further
Lifting.
The content of the invention
It is an object of the invention to overcome above-mentioned the deficiencies in the prior art, propose that a kind of quasi- switch based on switched inductors rises
DC/DC converters are pressed, 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 negative electrode and direct-current input power supplying of the first described diode
Negative pole and first switch pipe source electrode connection；One end of the positive pole of described 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 the first described inductance and the anode of the 3rd diode, the 4th
The anode connection of diode；The negative electrode of 3rd diode is connected with the negative electrode 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 of the 5th diode, second switch pipe；Described
One end connection of one end of output capacitance, the negative electrode of the 6th diode and load；The negative electrode and first of the 5th described diode
The drain electrode of switching tube and one end connection of electric capacity；The anode of the other end of the electric capacity and the first diode, second switch pipe
The other end of source electrode, the other end of output capacitance and load connects.
The specific connected mode of circuit of the present invention is：The negative electrode and the negative pole of direct-current input power supplying of the first described diode
Connected with the source electrode of first switch pipe；One end of the positive pole of described direct-current input power supplying and the first inductance, second diode
Anode and the connection of the 6th diode anode；The other end of the first described inductance and anode, the 4th diode of the 3rd diode
Anode connection；The negative electrode of 3rd diode is connected with the negative electrode of one end of the second inductance, the second diode；The second described electricity
The other end of sense is connected with the drain electrode of the 4th diode cathode, the anode of the 5th diode, second switch pipe；Described output electricity
One end connection of one end of appearance, the negative electrode of the 6th diode and load；The negative electrode of the 5th described diode and first switch pipe
Drain electrode and electric capacity one end connection；It is the other end of the electric capacity and the anode of the first diode, the source electrode of second switch pipe, defeated
Go out the other end of electric capacity and the other end of 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 dutycycle.
Compared with prior art, circuit of the present invention has the following advantages that and technique effect：Boosted compared to traditional Z sources
DC/DC converters and the quasi- Z sources DC/DC converters of switched inductors type have in the case of identical dutycycle and input voltage
Under the conditions of higher output voltage, i.e. identical input voltage and output voltage, circuit of the present invention only needs to less dutycycle
Low step voltage can just be risen to high-grade voltage, and simple in construction, two switching tube synchronous workings, it is easy to control,
The voltage stress of switching tube and diode is small, and operating efficiency is high, therefore circuit of the present invention with being widely applied prospect very much.
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 converter described in present example and the quasi- Z sources DC/DC converters of switched inductors type, Z sources boosting DC/DC
The V of converter and Boosto/ViThe oscillogram changed with dutycycle D.
Fig. 5 is the MATLAB/simulink simulation waveforms of circuit of the present invention correlated variables of steady operation in D=0.25
Figure.
Embodiment
With reference to embodiments and accompanying drawing the present invention is described in further detail explanation, but embodiments of the present invention
Not limited to this.If being that those skilled in the art can join it is noted that having the process or parameter of not special detailed description below
According to prior art understand or realize.
The Basic Topological and each main element voltage x current reference direction of the present invention is as shown in Figure 1.For the side of analysis
Just, the device in circuit structure is accordingly to be regarded as ideal component.A kind of quasi- boost switching DC/DC converters based on switched inductors, its
Include the first diode D1, first switch pipe S1, direct-current input power supplying Vin, the first inductance L1, the second diode D2, the three or two pole
Pipe D3, the 4th diode D4, the second inductance L2, the 5th diode D5, electric capacity C, the 6th diode D6, second switch pipe S2, output
Electric capacity CoWith load RL。
The drive signal of first, second switching tube is set in this example as Vg, input voltage be Vi, output voltage be 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
Sky sets output voltage gain as G than being D, and 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) interior not same order
2 operation modes of section, are described as follows respectively：
(the t of operation mode 10~t1)：As shown in Figure 3 a, first, second switching tube synchronization action, its driving voltage VgFrom low
Level is changed into high level, and first, second switching tube is turned on, and 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 electric capacity 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.
(the t of operation mode 21~t2)：As shown in Figure 3 b, first, second switching tube synchronization action, its driving voltage VgFrom height
Level is changed into low level, and first, second switching tube shut-off, first, the three, the 5th diodes bear forward voltage and turned 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 electric capacity C, while output capacitance CoTo load RLPower supply.
Analyze, because first, second inductance size is the same, exist with voltage-second balance principle, i.e. inductive drop more than
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).The interval turned in switching tube, output voltage VoEqual to input voltage ViWith capacitance voltage VCSum, so according to relation
Formula (2) can further obtain output voltage VoWith input voltage ViRelational expression be formula (3).
Voltage when then a kind of quasi- boost switching DC/DC converters stable state based on switched inductors of the present invention is exported
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 dutycycle), and 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, circuit of the present invention is in the case where dutycycle D is no more than 0.33, and output voltage gain G can just reach very greatly, bright
The aobvious voltage gain higher than other two kinds of converters.Additionally, due to the switching tube synchronization action of circuit of the present invention, it is only necessary to all the way
Drive signal can just be realized.
With ViExemplified by=10V, dutycycle D=0.25, simulation result such as Fig. 5 of correlated variables in circuit of the present invention is given
It is shown.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 summary, a kind of quasi- boost switching DC/DC converters based on switched inductors proposed by the present invention, structure letter
Single, control is simple, with higher steady-state gain, it is adaptable to non-isolation type high-gain DC voltage transformation occasion.
Above-described embodiment is preferably embodiment, but embodiments of the present invention are not by the embodiment of the invention
Limitation, it is other it is any be Spirit Essence and the change made under principle away from the present invention, modification, replacement, combine, simplification,
Equivalent substitute mode is should be, is included within protection scope of the present invention.
Claims (3)
1. a kind of quasi- boost switching DC/DC converters based on switched inductors, it is characterised in that including the first diode (D1),
One switching tube (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), electric capacity (C), the 6th diode (D6), second switch pipe (S2), it is defeated
Go out electric capacity (Co) and load (RL)；The first described diode (D1) negative electrode and direct-current input power supplying (Vin) negative pole and first
Switching tube (S1) source electrode connection；The positive pole and the first inductance (L of described direct-current input power supplying (Vin)1) one end, the two or two
Pole pipe (D2) anode and the 6th diode (D6) anode connection；The first described inductance (L1) the other end and the 3rd diode
(D3) anode, the 4th diode (D4) anode connection；3rd diode (D3) negative electrode and the second inductance (L2) one end,
Second diode (D2) negative electrode connection；The second described inductance (L2) the other end and the 4th diode (D4) negative electrode, the five or two
Pole pipe (D5) anode, second switch pipe (S2) drain electrode connection；Described output capacitance (Co) one end, the 6th diode
(D6) negative electrode and load (RL) one end connection；The 5th described diode (D5) negative electrode and first switch pipe (S1) leakage
Pole and the connection of one end of electric capacity (C)；The other end and the first diode (D of the electric capacity (C)1) anode, second switch pipe (S2)
Source electrode, output capacitance (Co) the other end and load (RL) the other end connect.
2. a kind of described quasi- boost switching DC/DC converters based on switched inductors are required according to right 1, it is characterised in that when
First switch pipe, second switch pipe are simultaneously turned 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 electric capacity pass through the
One switching tube, second switch pipe give first, second induction charging, while being supplied by the 6th diode to output capacitance and load
Electricity；When first switch pipe, second switch pipe are simultaneously turned 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 electric capacity to charge by the first diode, the 3rd diode, the 5th diode, while output capacitance is to load
Power supply.
3. a kind of described quasi- boost switching DC/DC converters based on switched inductors are required according to right 1, it is characterised in that steady
State export when voltage gain G be：
Wherein VoRepresent the output voltage of converter load-side, ViFor input dc power potential source, D is to account for
Sky ratio.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710371906.8A CN107104590A (en) | 2017-05-24 | 2017-05-24 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710371906.8A CN107104590A (en) | 2017-05-24 | 2017-05-24 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113179015A (en) * | 2021-05-12 | 2021-07-27 | 西安石油大学 | High-gain DC-DC converter based on Z boost structure |
| CN113271006A (en) * | 2021-05-11 | 2021-08-17 | 西安科技大学 | Three-dimensional boost switch power supply system |
| CN113346743A (en) * | 2021-06-24 | 2021-09-03 | 江苏大学 | Non-isolated high-gain direct current converter |
| CN116232062A (en) * | 2023-05-09 | 2023-06-06 | 深圳市恒运昌真空技术有限公司 | High-voltage gain converter based on coupling inductance |
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|---|---|---|---|---|
| CN105450020A (en) * | 2015-05-01 | 2016-03-30 | 华南理工大学 | Common-ground high-gain Z source boost converter |
| CN205847091U (en) * | 2016-06-30 | 2016-12-28 | 华南理工大学 | A kind of switched inductors type quasi-boost switching DC DC changer |
| CN207368876U (en) * | 2017-05-24 | 2018-05-15 | 华南理工大学 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
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2017
- 2017-05-24 CN CN201710371906.8A patent/CN107104590A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN105450020A (en) * | 2015-05-01 | 2016-03-30 | 华南理工大学 | Common-ground high-gain Z source boost converter |
| CN205847091U (en) * | 2016-06-30 | 2016-12-28 | 华南理工大学 | A kind of switched inductors type quasi-boost switching DC DC changer |
| CN207368876U (en) * | 2017-05-24 | 2018-05-15 | 华南理工大学 | A kind of quasi- boost switching DC/DC converters based on switched inductors |
Non-Patent Citations (1)
| Title |
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| EBRAHIM BABAEI，等: "Developed embedded switched-Z-source inverter", 《IET POWER ELECTRONICS》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113271006A (en) * | 2021-05-11 | 2021-08-17 | 西安科技大学 | Three-dimensional boost switch power supply system |
| CN113271006B (en) * | 2021-05-11 | 2022-12-09 | 西安科技大学 | Cubic type boost switch power supply system |
| CN113179015A (en) * | 2021-05-12 | 2021-07-27 | 西安石油大学 | High-gain DC-DC converter based on Z boost structure |
| CN113346743A (en) * | 2021-06-24 | 2021-09-03 | 江苏大学 | Non-isolated high-gain direct current converter |
| CN113346743B (en) * | 2021-06-24 | 2022-05-20 | 江苏大学 | Non-isolated high-gain direct current converter |
| CN116232062A (en) * | 2023-05-09 | 2023-06-06 | 深圳市恒运昌真空技术有限公司 | High-voltage gain converter based on coupling inductance |
| CN116232062B (en) * | 2023-05-09 | 2023-07-25 | 深圳市恒运昌真空技术有限公司 | High-voltage gain converter based on coupling inductance |
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