CN107017772A - A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling - Google Patents
A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling Download PDFInfo
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- CN107017772A CN107017772A CN201710408912.6A CN201710408912A CN107017772A CN 107017772 A CN107017772 A CN 107017772A CN 201710408912 A CN201710408912 A CN 201710408912A CN 107017772 A CN107017772 A CN 107017772A
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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
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1582—Buck-boost converters
-
- 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
- H02M1/00—Details of apparatus for conversion
- H02M1/14—Arrangements for reducing ripples from dc input or output
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
-
- 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
- H02M3/158—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 including plural semiconductor devices as final control devices for a single load
- H02M3/1584—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel
- H02M3/1586—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 including plural semiconductor devices as final control devices for a single load with a plurality of power processing stages connected in parallel switched with a phase shift, i.e. interleaved
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling, belong to voltage transformation field.The problem of solving smaller traditional two-way DC/DC power converter voltages adjusting range, low delivery efficiency and big output voltage ripple.The present invention includes 3 two-way DC/DC converters monomers, and 3 two-way DC/DC converters monomers are connected in parallel；Coupling inductance L in 3 two-way DC/DC converters monomersrIt is wrapped on same iron core.Described two-way DC/DC converters monomer will have five parts composition, i.e.,：Lower-voltage circuit, high pressure lateral circuit, transition circuit, clamp circuit and step-down switching circuit.Present invention is mainly used for voltage conversion is carried out between high-low voltage.
Description
Technical field
The invention belongs to voltage transformation field.
Background technology
Due to the maturation of HVDC Transmission Technology, direct current transportation have in itself it is remote, high-power, beneficial to Power System Interconnection etc.
Characteristic increasingly shows, but is also amplified the drawbacks of direct current transportation simultaneously.Direct current transportation bus and DC load, dc source it
Between matching it is often more difficult, therefore be accomplished by the conversion that two-way DC/DC converters carry out voltage.Current DC/DC on the market
Converter can meet the basic demand in direct current transportation field, but current two-way DC/DC converters still suffer from it is following
Several big problems：
1st, traditional two-way DC/DC power converter voltages adjusting range is smaller, in larger or smaller extreme of dutycycle
In the case of the efficiency of power inverter can be than relatively low, therefore just lose the meaning of direct current transportation.
2nd, full bridge structure or Buck/Boost structures are used traditional two-way DC/DC power inverters more.Traditional topology
There are the shortcomings of switching device is more, control is difficult, bulky, circuit modeling is difficult in structure, while converter is reliable
Property is relatively low.
3rd, traditional two-way DC/DC power inverters direct current output ripple is larger, does not meet most direct-flow current consumer ripples
It is required that.
4th, in order to reduce the voltage ripple of direct current output, at present there is also the two-way DC/DC converters of Interleaving and Transformer Paralleling,
But in current Interleaving and Transformer Paralleling, parallel units flow relatively difficult, reduction operational reliability.
The content of the invention
The present invention is that traditional two-way DC/DC power converter voltages adjusting range is smaller, delivery efficiency is low in order to solve
With output voltage ripple it is big the problem of, become the invention provides a kind of two-way DC/DC of high step-up ratio based on Interleaving and Transformer Paralleling
Parallel operation.
A kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling, it includes 3 two-way DC/DC conversion
Device monomer, and 3 two-way DC/DC converters monomers are connected in parallel；
Described each two-way DC/DC converters monomer includes inductance L1, inductance L2, inductance Ls, inductance LP, electric capacity C1, electricity
Hold C2, diode D1To D4, power switch tube S1, power switch tube S2And power switch tube S3；
Inductance L2One end and inductance LPOne end connection, inductance L2The other end and diode D2Negative electrode and power open
Close pipe S2Negative terminal connect simultaneously；
Inductance LPThe other end and inductance LsOne end, diode D1Anode, power switch tube S1Anode connect simultaneously
Connect；
Inductance LsThe other end and electric capacity C2One end connection, electric capacity C2The other end and diode D3Negative electrode, power opens
Close pipe S2Anode and power switch tube S3Negative terminal connect simultaneously；
Diode D1Negative electrode and electric capacity C1One end and inductance L1One end connect simultaneously, inductance L1The other end and two
Pole pipe D3Anode and diode D4Negative electrode connect simultaneously；
Power switch tube S1Negative terminal and diode D2Anode, electric capacity C1The other end and diode D4Anode simultaneously
Connection；
Inductance LPWith inductance LsConstitute coupling inductance Lr, and inductance LPFor coupling inductance LrPrimary side, inductance LsFor coupling electricity
Feel LrSecondary；
Described inductance L2One end and power switch tube S1Negative terminal be respectively used to access low-side power VLIt is positive and negative
Pole；
Described power switch tube S3Anode and diode D4Anode be respectively used to access high side power VHJust,
Negative pole；
Coupling inductance L in 3 two-way DC/DC converters monomersrIt is wrapped on same iron core.
A kind of two-way DC/DC converters of described high step-up ratio based on Interleaving and Transformer Paralleling, in addition to electric capacity CLAnd electricity
Hold CH；
Electric capacity CLTwo ends be respectively connected to low-side power VLPositive and negative electrode,
Electric capacity CHTwo ends be respectively connected to high side power VHPositive and negative electrode.
Described power switch tube S1, power switch tube S2And power switch tube S3It is nmos pass transistor.
The beneficial effect that the present invention is brought is：
(1) a kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling of the present invention can realize compared with
Reversible transducer delivery efficiency is higher than 95.27% under high conversion efficiency, rated condition, and in large-power occasions delivery efficiency more
It is high.Converter bidirectional output voltage ripple is smaller simultaneously, and both less than ± 0.10%.
(2) a kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling of the present invention are constituted
Three-phase system carries out small-signal modeling, ignores the effect of the higher order pole of system, the only dominant pole in consideration system, system can
To be reduced to second-order system.When circuit works in Boost patterns, the degree of fitting of the ssystem transfer function after simplifying is
91.43%, ssystem transfer function such as formula (10), the Bode diagram of system is as shown in Figure 8.
When circuit works in Buck patterns, the degree of fitting of the ssystem transfer function after simplifying is 91.88%, the biography of system
Delivery function such as formula (11), the Bode diagram of system is as shown in Figure 9., can be real to system according to Fig. 8 and system shown in Figure 9 Bode diagram
Now compensate, carry out closed-loop system design, algorithm design is relatively simple.
(3) converter can realize larger step-up ratio.Under Buck patterns, different coupling inductance no-load voltage ratios are chosen, can
To measure the step-up ratio in the case where dutycycle is different, as shown in Figure 10.It can be seen from fig. 10 that in the feelings of different N values
Condition downconverter step-up ratio it is reciprocal larger, therefore can expeditiously large-scale decompression transformation；Simultaneously pattern in Boost not
It is as shown in figure 11 with step-up ratio of the coupling inductance in the case of different duty.It can be seen from figure 11 that converter can be realized
Large-scale boosting inverter, while keeping greater efficiency when carrying out and converting on a large scale.
Brief description of the drawings
Fig. 1 is the structural representation of two-way DC/DC converters monomer of the present invention；
Fig. 2 is a kind of principle of the two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling of the present invention
Schematic diagram；
Fig. 3 is the power switch tube S under Buck patterns1, power switch tube S2And power switch tube S3Control strategy figure；
Wherein, SG1For power switch tube S1Grid receive control signal, SG2For power switch tube S2Grid receive control letter
Number, SG3For power switch tube S3Grid receive control signal, VGSFor power switch pipe grid source electrode both end voltage；
Fig. 4 is the power switch tube S under Buck patterns3During as power change switch, two-way DC/DC converters monomer
(1) oscillogram；Wherein,For coupling inductance primary current,For coupling inductance secondary current,To flow through inductance L1Electricity
Stream,To flow through inductance L2Electric current,For switching tube S1Drain-source voltage,To flow through switching tube S1Electric current,
For switching tube S2Drain-source voltage,To flow through switching tube S2Electric current,For switching tube S3Drain-source voltage,
To flow through switching tube S3Electric current；
Fig. 5 is the power switch tube S under Boost patterns1, with power switch tube S3It is complementary under conditions of it there is dead band
The policy map of control；
Fig. 6 is the oscillogram of two-way DC/DC converters monomer (1) under Boost patterns；
Fig. 7 is the rough schematic view of the magnetic core of crisscross parallel method；
Fig. 8 is the system Bode diagram under Boost patterns；
Fig. 9 is the system Bode diagram under Buck patterns；
Figure 10 is step-up ratio curve map under Buck patterns；
Figure 11 is step-up ratio curve map under Boost patterns；
Figure 12 is model machine output voltage waveform；
Figure 13 is a kind of output of the two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling of the present invention
Efficiency.
Embodiment
Embodiment one：Illustrate present embodiment referring to Fig. 1 and Fig. 2, one kind described in present embodiment is based on handing over
The two-way DC/DC converters of high step-up ratio of wrong parallel-connection structure, it includes 3 two-way DC/DC converters monomers 1, and 3 two-way
DC/DC converters monomer 1 is connected in parallel；
Described each two-way DC/DC converters monomer 1 includes inductance L1, inductance L2, inductance Ls, inductance LP, electric capacity C1, electricity
Hold C2, diode D1To D4, power switch tube S1, power switch tube S2And power switch tube S3；
Inductance L2One end and inductance LPOne end connection, inductance L2The other end and diode D2Negative electrode and power open
Close pipe S2Negative terminal connect simultaneously；
Inductance LPThe other end and inductance LsOne end, diode D1Anode, power switch tube S1Anode connect simultaneously
Connect；
Inductance LsThe other end and electric capacity C2One end connection, electric capacity C2The other end and diode D3Negative electrode, power opens
Close pipe S2Anode and power switch tube S3Negative terminal connect simultaneously；
Diode D1Negative electrode and electric capacity C1One end and inductance L1One end connect simultaneously, inductance L1The other end and two
Pole pipe D3Anode and diode D4Negative electrode connect simultaneously；
Power switch tube S1Negative terminal and diode D2Anode, electric capacity C1The other end and diode D4Anode simultaneously
Connection；
Inductance LPWith inductance LsConstitute coupling inductance Lr, and inductance LPFor coupling inductance LrPrimary side, inductance LsFor coupling electricity
Feel LrSecondary；
Described inductance L2One end and power switch tube S1Negative terminal be respectively used to access low-side power VLIt is positive and negative
Pole；
Described power switch tube S3Anode and diode D4Anode be respectively used to access high side power VHJust,
Negative pole；
Coupling inductance L in 3 two-way DC/DC converters monomers 1rIt is wrapped on same iron core.
Shown in the two-way DC/DC converters of a kind of high step-up ratio based on Interleaving and Transformer Paralleling described in present embodiment
Circuit has three-phase symmetrical structure, therefore, analyzes the main contents of invention in principle from single-phase circuit emphatically.
Principle analysis：
Described two-way DC/DC converters monomer 1 will have five parts composition, i.e.,：Lower-voltage circuit, high pressure lateral circuit, mistake
Cross circuit, clamp circuit and step-down switching circuit.
Lower-voltage circuit includes coupling inductance LrPrimary side LPAnd power switch tube S1；Lower-voltage circuit becomes with two-way DC/DC
The low-pressure side of parallel operation monomer 1 is connected, corresponding power switch tube S3It is high pressure lateral circuit, high pressure lateral circuit and circuit
High-pressure side is connected.
Transition circuit includes coupling inductance LrSecondary LsAnd electric capacity C2, and transition circuit is connecting two-way DC/DC conversion
Between the high-pressure side of device monomer 1 and low-pressure side, the effect of energy snubber is served.
Clamp circuit includes inductance L1, electric capacity C1, diode D1、D3、D4, in order to carried in the switching tube course of work
Power supply logical circulation road, the formation for promoting switching tube Sofe Switch process.
Step-down switching circuit includes inductance L2, diode D2, power switch tube S2, the secondary buck part of circuit is constituted,
Secondary buck part is only worked under the Buck patterns of circuit, provides necessary path for electric current, it is ensured that the Buck of circuit
Pattern is smoothed out.
(1) the Buck patterns of two-way DC/DC converters monomer 1
Under Buck patterns, the conversion of secondary buck subparticipation power, and power switch tube S2With power switch tube S1Together
Phase controlling, with power switch tube S3The complementary control under conditions of it there is dead band.Control strategy is as shown in Figure 3.
Under Buck patterns, the two-way circuit of DC/DC converters monomer 1 has seven mode.In the operation mode of circuit,
Power switch tube S3For power change switch, and switching tube S1With S2Primarily serve booster action in the process, and S2It is open-minded
When, work in synchronous rectification state.The main waveform of two-way DC/DC converters monomer 1 is as shown in Figure 4 under Buck patterns.
, can be with from figure 3, it can be seen that the switching tube in two-way DC/DC converters monomer 1 can be open-minded with no-voltage
Sofe Switch state is realized to greatly reduce the loss of circuit.In t0-t1Moment, S3It is open-minded, VH-S3-C2-Ls-LP-VLConstitute electricity
One path of stream, according to loop voltage law, can obtain voltage VHExpression formula, such as formula 1：
Due to LPAnd LsIt is coupling inductance LrPrimary and secondary side, it is assumed that coupling inductance LrNo-load voltage ratio be N, then secondary voltageIt can be write asThen formula (1) can be write as：
By that analogy, in t3-t4Moment, forIt can be write asSimultaneously because two-way DC/DC
The dead time of converter monomer 1 is shorter, it is therefore contemplated that d1+d3=1, therefore：
Therefore, formula 2, which can be arranged, is：
It is comprehensive, by formula 1 to formula 4,1 boosting under Buck patterns of two-way DC/DC converters monomer can be write out
ThanAs shown in Equation 5：
(2) the Boost patterns of two-way DC/DC converters monomer 1
Under Boost patterns, the secondary buck part of circuit is not involved in the conversion of power, switching tube S1, with switching tube S3
There is complementary control under conditions of dead band.Control strategy is as shown in Figure 5.
Under Boost patterns, because decompression auxiliary circuit is not involved in power conversion, therefore, related circuit mode also has
Reduced, have 6 different operation modes, and switching tube S3When opening, then two-way DC/DC converters monomer 1 is worked in together
Rectification state is walked, can further reduce the loss in circuit.Two-way DC/DC converters monomer 1 is main under Boost patterns
Waveform is as shown in Figure 6.
From fig. 6 it can be seen that the switching tube in circuit can be open-minded with no-voltage, can realize Sofe Switch state with
Greatly reduce the loss of circuit.In t0-t1Moment, S1It is open-minded, now C2-Ls-S1-C1-L1-D1A path of electric current is constituted,
Now, inductance L1Inductive current interconversion rate very little, therefore, inductance L1On voltage can ignore, it is therefore fixed according to loop voltage
Rule, has
By that analogy, at t2-t3 moment, VL-LP-D1-C1Loop is constituted, therefore,As shown in formula (7), think simultaneously
Dead time is shorter to be can be ignored, and therefore, it can represent VHVoltage, such as formula (8),
Comprehensive, above formula 6 to formula 8 can write out boosting of the two-way DC/DC converters monomer (1) under Boost patterns
Than such as shown in (9)
(3) new crisscross parallel flows mode
When carrying out two-way DC/CD Converter Interleaving Parallels, uneven often one of electric current distribution causes stabilization of equipment performance
The major reason of difference, therefore, the present invention utilize the coupling inductance L in circuitr, devise new crisscross parallel mode.In parallel connection
During, by the coupling inductance L of 3 two-way DC/DC converters monomers 1rIt is wrapped on same iron core, the present invention can rationally be set
The space length of iron core coil and the canoe of coil are counted, just can realize and out of phase flow.This kind of current equalizing method behaviour
Make simple, cost is relatively low, it is to avoid the sagging current-equalizing method of external characteristics, active current-equalizing method presence complex operation, cost it is higher,
The drawbacks of reliability is low.The rough schematic view of the magnetic core of the new crisscross parallel method of the present invention is as shown in Figure 7.
Checking test:
In order to verify a kind of two-way DC/DC converters of high step-up ratio based on Interleaving and Transformer Paralleling proposed by the invention
The correctness of design, the reversible transducer model machine for having built crisscross parallel is tested.The control section of model machine is public from ATMEL
The AT90PWM2 type single-chip microcomputers of department, the model single-chip microcomputer arithmetic speed is fast, while internal have PSC modules, beneficial to voltage detecting
And the output of PWM ripples.To realize strong driving force, driving chip carries out circuit drives from special control and chip I R2104.
Single phase bidirectional DC/DC power inverters component parameters are as shown in table 1, fsThe frequency of expression system work.
The component parameter of the two-way DC/DC converters monomer 1 of table 1
2nd, experiment result
With converter input voltage 24V, coupling inductance LrNo-load voltage ratio N=2 model machine is tested, optional dutycycle D=
0.52, it is 200V through experiment test circuit output voltage, ripple is smaller, and output voltage waveforms are as shown in figure 12.
Simultaneously in VL=24V, VHUnder=200V voltage conditions, different loads are chosen, under the conditions of different power grades
The power of circuit is measured.Measurement result is as shown in figure 13, it can be observed from fig. 13 that circuit is in wide input range, width
All there is higher efficiency, power output is most in the case where power output is approximately equal to 300W loading condition in the case of load regulation
Greatly, 95% has been exceeded.
Claims (3)
1. the two-way DC/DC converters of a kind of high step-up ratio based on Interleaving and Transformer Paralleling, it is characterised in that it is two-way including 3
DC/DC converters monomer (1), and 3 two-way DC/DC converters monomers (1) are connected in parallel；
Described each two-way DC/DC converters monomer (1) includes inductance L1, inductance L2, inductance Ls, inductance LP, electric capacity C1, electric capacity
C2, diode D1To D4, power switch tube S1, power switch tube S2And power switch tube S3；
Inductance L2One end and inductance LPOne end connection, inductance L2The other end and diode D2Negative electrode and power switch tube S2
Negative terminal connect simultaneously；
Inductance LPThe other end and inductance LsOne end, diode D1Anode, power switch tube S1Anode connect simultaneously；
Inductance LsThe other end and electric capacity C2One end connection, electric capacity C2The other end and diode D3Negative electrode, power switch pipe
S2Anode and power switch tube S3Negative terminal connect simultaneously；
Diode D1Negative electrode and electric capacity C1One end and inductance L1One end connect simultaneously, inductance L1The other end and diode D3
Anode and diode D4Negative electrode connect simultaneously；
Power switch tube S1Negative terminal and diode D2Anode, electric capacity C1The other end and diode D4Anode connect simultaneously；
Inductance LPWith inductance LsConstitute coupling inductance Lr, and inductance LPFor coupling inductance LrPrimary side, inductance LsFor coupling inductance Lr's
Secondary；
Described inductance L2One end and power switch tube S1Negative terminal be respectively used to access low-side power VLPositive and negative electrode；
Described power switch tube S3Anode and diode D4Anode be respectively used to access high side power VHPositive and negative electrode；
Coupling inductance L in 3 two-way DC/DC converters monomers (1)rIt is wrapped on same iron core.
2. the two-way DC/DC converters of a kind of high step-up ratio based on Interleaving and Transformer Paralleling according to claim 1, its feature
It is, in addition to electric capacity CLWith electric capacity CH；
Electric capacity CLTwo ends be respectively connected to low-side power VLPositive and negative electrode,
Electric capacity CHTwo ends be respectively connected to high side power VHPositive and negative electrode.
3. the two-way DC/DC converters of a kind of high step-up ratio based on Interleaving and Transformer Paralleling according to claim 1, its feature
It is, described power switch tube S1, power switch tube S2And power switch tube S3It is nmos pass transistor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408912.6A CN107017772B (en) | 2017-06-02 | 2017-06-02 | A kind of two-way DC/DC converter of high step-up ratio based on Interleaving and Transformer Paralleling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710408912.6A CN107017772B (en) | 2017-06-02 | 2017-06-02 | A kind of two-way DC/DC converter of high step-up ratio based on Interleaving and Transformer Paralleling |
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| Publication Number | Publication Date |
|---|---|
| CN107017772A true CN107017772A (en) | 2017-08-04 |
| CN107017772B CN107017772B (en) | 2019-02-19 |
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| CN108199579A (en) * | 2018-01-08 | 2018-06-22 | 厦门大学 | A kind of high no-load voltage ratio Sofe Switch DC-DC buck converters with coupling inductance |
| CN109980934A (en) * | 2019-04-17 | 2019-07-05 | 哈尔滨工业大学 | The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance |
| CN110011537A (en) * | 2019-05-09 | 2019-07-12 | 广州金升阳科技有限公司 | A kind of switch converters and its control method |
| CN114938140B (en) * | 2022-04-18 | 2024-05-10 | 华南农业大学 | Wide-voltage-range bidirectional DC-DC converter suitable for new energy automobile |
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| CN107947291A (en) * | 2017-12-21 | 2018-04-20 | 沈阳贝特瑞科技有限公司 | A kind of accumulator cell charging and discharging management system |
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| CN109980934A (en) * | 2019-04-17 | 2019-07-05 | 哈尔滨工业大学 | The two-way DC/DC converter of the high no-load voltage ratio of high frequency based on coupling inductance |
| CN110011537A (en) * | 2019-05-09 | 2019-07-12 | 广州金升阳科技有限公司 | A kind of switch converters and its control method |
| CN110011537B (en) * | 2019-05-09 | 2020-08-18 | 广州金升阳科技有限公司 | Switch converter and control method thereof |
| CN114938140B (en) * | 2022-04-18 | 2024-05-10 | 华南农业大学 | Wide-voltage-range bidirectional DC-DC converter suitable for new energy automobile |
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