CN206992965U - Reversible transducer - Google Patents
Reversible transducer Download PDFInfo
- Publication number
- CN206992965U CN206992965U CN201720548102.6U CN201720548102U CN206992965U CN 206992965 U CN206992965 U CN 206992965U CN 201720548102 U CN201720548102 U CN 201720548102U CN 206992965 U CN206992965 U CN 206992965U
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- China
- Prior art keywords
- inductance
- copped wave
- electric capacity
- transformer
- llc resonance
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- 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.)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Abstract
The utility model provides a kind of reversible transducer, including transformer and resonator；The resonator is made up of positive LLC resonance circuits and reverse LLC resonance circuits, and the positive LLC resonance circuits and reverse LLC resonance circuits are connected in series to the first side winding of transformer；The positive LLC resonance circuits and reverse LLC resonance circuits have a shared inductance, and one end of the shared inductance is directly connected to the first side winding of transformer.The utility model realizes that bidirectional energy transmits by the side that positive LLC resonance circuits and reverse LLC resonance circuits are connected in series in into transformer, can not only reduce component number and improve power density, and can improve efficiency of transmission.
Description
Technical field
Reversible transducer field is the utility model is related to, more specifically to a kind of with novel resonant cavity structure
Reversible transducer.
Background technology
With the continuous development of electric automobile and automation industry, more and more application scenarios require to realize that bidirectional energy passes
It is defeated.Bidirectional energy transmission can be realized by two unidirectional power inverters, but this mode not only power density it is low but also
Reliability is low, therefore bidirectional power converter arises at the historic moment.
Compared to traditional unidirectional power converter, although bidirectional power converter improves power density, but its efficiency
It can but decline etc. characteristic.Based on this, high efficiency is realized, the bidirectional power converter of high power density is current power supply industry
One of emphasis studied.
As shown in figure 1, be the circuit topology figure of existing buck/boost (Buck/Boost) converter, the buck/boost
Converter is in decompression using decompression (Buck) topology, i.e. switching tube Q2 is held off, by PWM (plus width
Modulation, pulsewidth modulation) ripple driving switching tube Q1, inductance L1, electric capacity C2 by voltage V1 decompression for voltage V2 export；
It is held on during boosting using boosting (Boost) topology, i.e. switching tube Q1, switching tube Q2, inductance L1, the electricity driven by PWM ripples
Hold C2 to export voltage V2 boostings for voltage V1.Although the buck/boost converter can realize two-way energy transmission,
This converter belongs to non-isolated converter, and it can only unidirectionally realize one kind in boosting or decompression, can not be unidirectional
On not only realize decompression and realize boost, application scenario is more limited to.
As shown in Fig. 2 it is the circuit topology figure of existing two-stage bidirectional converter.The wherein one-level of two-stage bidirectional converter is
Buck/boost (Buck/Boost) non-isolated structure (including inductance L1, switching tube Q1, Q2, electric capacity C3), one-level is isolation in addition
Structure (including isolated converter).The buck/boost of two-stage bidirectional converter is generally real by the non-isolated structural levels of Buck/Boost
It is existing.But the reversible transducer is due to using two-layer configuration, therefore its volume is larger, is unfavorable for the lifting of power density.
As shown in figure 3, it is the circuit topology figure of the two-stage bidirectional converter of existing double active structures.The reversible transducer
Both ends are chopper circuit (by switching tube Q1~Q4 chopper circuits formed and the copped wave electricity being made up of switching tube Q5~Q8
Road), and the DC source on two electric capacity C1, C2 is converted on inductance L1 by alternating voltage source by chopper circuit, so as to shape
Transmitted into energy.But the component of the reversible transducer is more, it is unfavorable for the control of cost.
As shown in figure 4, it is the circuit topology figure of the reversible transducer of existing bilateral two-way resonance structure.The two-way changing
The both ends of device are chopper circuit (by switching tube Q1~Q4 chopper circuits formed and the copped wave electricity being made up of switching tube Q5~Q8
Road), and the reversible transducer includes the resonator (resonance being made up of inductance L1, L3, electric capacity C3 positioned at transformer T both sides
Chamber and the resonator being made up of inductance L2, L4, electric capacity C4), it all connects humorous when forward and reverse works for typical LLC
Shake structure, it is possible to achieve the Sofe Switch of gamut.But the reversible transducer need to be equally used compared with multicomponent device, be unfavorable for cost
Control.
Utility model content
The technical problems to be solved in the utility model is, is asked for above-mentioned converter component is more, cost is higher
A kind of topic, there is provided converter of achievable bidirectional voltage boosting/decompression.
The technical scheme that the utility model solves above-mentioned technical problem is to provide a kind of reversible transducer, including transformer
And resonator；The resonator is made up of positive LLC resonance circuits and reverse LLC resonance circuits, and the positive LLC resonance
Circuit and reverse LLC resonance circuits are connected in series to the first side winding of transformer；The positive LLC resonance circuits and reversely
LLC resonance circuits have a shared inductance, and one end of the shared inductance is directly connected to the first side winding of transformer.
In reversible transducer described in the utility model, the reversible transducer also includes the first external terminal of connection
First copped wave unit, the second copped wave unit for connecting the second external terminal；The first copped wave unit is connected to via resonator
First side winding of the transformer, and the second copped wave unit is connected to the second side winding of the transformer.
In reversible transducer described in the utility model, the first copped wave unit uses single bridge arm copped wave structure or H
Bridge arm copped wave structure；The second copped wave unit uses single bridge arm structure or H bridge copped wave structures.
In reversible transducer described in the utility model, the positive LLC resonance circuits by first inductance, one
First electric capacity and shared inductance are formed, and the reversely LLC resonance circuits are by second inductance, second electric capacity and share electricity
Sense is formed；What first inductance, the first electric capacity, the second electric capacity and the second inductance were connected in series in the first copped wave unit first connects
Between first terminals of the first side winding of line end and transformer；The first end of the shared inductance is connected to first electricity
Hold the tie point with second electric capacity, the second end of the shared inductance is directly connected to the second wiring of the first copped wave unit
End and the second terminals of the first side of transformer winding.
In reversible transducer described in the utility model, the second external terminal is flowed to by the first external terminal in energy
When, the chopping frequency of the first copped wave unit is more than：
Wherein, C1For the capacitance of the first electric capacity, L1For the inductance value of the first inductance, Lm
To share the inductance value of inductance.
In reversible transducer described in the utility model, the first external terminal is flowed to by the second external terminal in energy
When, the chopping frequency of the second copped wave unit is more than：
Wherein, C2For the capacitance of the second electric capacity, L2For the inductance of the second inductance
Amount, LmTo share the inductance value of inductance.
In reversible transducer described in the utility model, the positive LLC resonance circuits by the first inductance, two the 3rd
Electric capacity and shared inductance are formed, and the reversely LLC resonance circuits are made up of the second inductance, the second electric capacity and shared inductance；It is described
Two the 3rd electric capacity are connected in series between two terminals of the first external terminal；First inductance, the second electric capacity, second
Inductance be sequentially connected in series two the 3rd electric capacity tie point and transformer the first side winding the first terminals between；Institute
The first end for stating shared inductance is connected to the tie point of the first inductance and the second electric capacity, and the second end difference of the shared inductance
Connect the second terminals of the tie point of two switching tubes of the first copped wave unit and the first side winding of transformer.
In reversible transducer described in the utility model, second inductance is integrated into the transformer.
In reversible transducer described in the utility model, the first copped wave unit and the second copped wave unit have respectively
Filter capacitor.
Reversible transducer of the present utility model has the advantages that：By by positive LLC resonance circuits and reverse LLC
The side that resonance circuit is connected in series in transformer realizes that bidirectional energy transmits, and can not only reduce component number and improve power
Density, and efficiency of transmission can be improved.
Brief description of the drawings
Fig. 1 is the circuit topology figure of existing buck/boost converter；
Fig. 2 is the circuit topology figure of existing two-stage bidirectional converter；
Fig. 3 is the circuit topology figure of the two-stage bidirectional converter of existing double active structures；
Fig. 4 is the circuit topology figure of the reversible transducer of existing bilateral two-way resonance structure；
Fig. 5 is the schematic diagram of the utility model reversible transducer first embodiment；
Fig. 6 is waveform diagram of the reversible transducer when forward direction works in Fig. 5；
Fig. 7 is the schematic diagram of the utility model reversible transducer second embodiment；
Fig. 8 is the schematic diagram of the utility model reversible transducer 3rd embodiment；
Fig. 9 is the schematic diagram of the utility model reversible transducer fourth embodiment；
Figure 10 is the schematic diagram of the embodiment of the utility model reversible transducer the 5th.
Embodiment
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only explaining
The utility model, it is not used to limit the utility model.
As shown in figure 5, it is the schematic diagram of the utility model reversible transducer first embodiment.Two-way change in the present embodiment
Parallel operation includes transformer T and resonator 51, and resonator 51 is located at transformer T side.Above-mentioned resonator 51 is by positive LLC
Resonance circuit and reverse LLC resonance circuits are formed, and positive LLC resonance circuits and reverse LLC resonance circuits are connected in series to change
Depressor T the first side winding；Above-mentioned positive LLC resonance circuits and reverse LLC resonance circuits have a shared inductance Lm, and should
The one end for sharing inductance Lm is directly connected to transformer T the first side winding.
Above-mentioned reversible transducer may also include the first external terminal V1 of connection the first copped wave unit, the second external connection end of connection
Sub- V2 the second copped wave unit；Above-mentioned first copped wave unit is connected to transformer T the first side winding, and via resonator 51
Two copped wave units are connected to transformer T the second side winding.When forward direction is transmitted, energy is from the first external terminal V1 through resonator
51 and transformer T flows to the second external terminal V2；During reverse transfer, energy is from the second external terminal V2 through transformer T and resonance
Chamber 51 flows to the first external terminal V1.
Above-mentioned first copped wave unit and the second copped wave unit can use single bridge arm copped wave structure, i.e. the first copped wave unit bag
Two switching tubes Q1, Q2 are included, the second copped wave unit includes two switching tubes Q3, Q4.The first copped wave unit and the second copped wave list
Member can have the filter capacitor for being connected to respective external terminal respectively.
Positive LLC resonance circuits are made up of a first inductance L1, a first electric capacity C1 and shared inductance Lm, reversely
LLC resonance circuits are made up of a second inductance L2, a second electric capacity C2 and shared inductance Lm；Above-mentioned first inductance L1,
(i.e. two are opened the first terminals that one electric capacity C1, the second electric capacity C2, the second inductance L2 are sequentially connected in series in the first copped wave unit
Close pipe tie point) and transformer T the first side winding (such as left side shown in Fig. 5) the first terminals between；Share electricity
Sense Lm first end is connected to the first electric capacity C1 and the second electric capacity C2 tie point, the second end is directly connected to the first copped wave unit
The second terminals (i.e. the first external terminal V1 negative pole) and transformer T the first side winding the second terminals.In reality
In the application of border, the first inductance L1 and the first electric capacity C1 position are interchangeable, and the second electric capacity C2 and the second inductance L2 position can be mutual
Change.
In the positive transmission of energy, the electric capacity at the first external terminal V1 ends realizes input filter, two switching tubes Q1 and Q2
Input voltage is cut into square wave.First electric capacity C1, the first inductance L1, share inductance Lm, the second electric capacity C2 and the second inductance L2 groups
Into resonator 51 will increase or maintain square-wave voltage amplitude.The voltage that resonator 51 exports is depressured by transformer T
Or boosting, finally by two switching tube Q3 and Q4 synchronous rectifications of the second copped wave unit of the side of transformer second (secondary)
Into direct voltage output to the second external terminal V2, and output filtering is realized by second external terminal V2 electric capacity.
As shown in fig. 6, the respectively ripple of the pole tension of switching tube Q2 source and drain two (i.e. the output voltage of the first copped wave unit)
Shape, from the first electric capacity C1 and the first inductance L1 outflow electric current waveform (solid line be from the first electric capacity C2 flow out electric current waveform,
Dotted line be from the first inductance L1 flow out electric current waveform), from the second electric capacity C2 flow out electric current waveform.In above process,
One electric capacity C1, the first inductance L1, share inductance Lm and form LLC resonance, the gain of resonator 51 is mainly by the first electric capacity C1, the
One inductance L1, inductance Lm is shared to control.Now resonator 51 has a low-frequency resonant Frequency point and a high-frequency resonant frequency
Point, shown in low-frequency resonant Frequency point such as calculating formula (1)：
Shown in high-frequency resonant Frequency point such as calculating formula (2)：
In calculating formula (1), (2), C1For the first electric capacity C1 capacitance, L1For the first inductance L1 inductance value, LmIt is shared
The tuning range of reversible transducer is more than f during inductance Lm inductance value, i.e. positive transmissionL, fFrequency range.The two-way changing
Device can both control the forward flow of converter energy using the mode of frequency regulation of the above, can be increased again by reducing switching frequency
Output voltage, output voltage is reduced by improving switching frequency.
When energy back is transmitted, input filter is realized by the second external terminal V2 electric capacity, the second copped wave unit Q3,
Input voltage is cut into square wave by Q4 and the second sides of transformer T winding.First electric capacity C1, the first inductance L1, share inductance Lm, second
The resonator 51 of electric capacity C2 and the second inductance L2 compositions will increase or maintain the amplitude of square-wave voltage.Last first copped wave list
The output voltage of resonator 51 is carried out halfwave rectifier and forms output voltage and by corresponding by two switching tube Q1 and Q2 of member
Electric capacity carries out output filtering.In above process, the second electric capacity C2, the second inductance L2 and shared inductance Lm form LLC resonance, humorous
The gain of chamber 51 of shaking mainly is controlled by the second electric capacity C2, the second inductance L2 and shared inductance Lm.Reverse operation can produce height
Frequently, two resonant frequency points of low frequency, shown in low-frequency resonant Frequency point such as calculating formula (3)：
Shown in high-frequency resonant Frequency point such as calculating formula (4)：
In above-mentioned calculating formula (3), (4), C2For the second electric capacity C2 capacitance, L2For the second inductance L2 inductance value.Now,
Tuning range is typically greater than fL, bFrequency range.The reversible transducer can both control conversion using the mode of frequency regulation of the above
The reverse flow of device energy, it can increase output voltage by reducing switching frequency again, be reduced by improving switching frequency defeated
Go out voltage.
As shown in fig. 7, the first electric capacity in above-mentioned positive LLC resonance circuits can be the first electricity in Fig. 5 by two capacitances
The 3rd the electric capacity C31 and C32 for holding C1 capacitance half is formed, and this two the 3rd electric capacity C31 and C32 are connected in series in outside first
Between connecting terminal V1 two terminals；First inductance L1, the second electric capacity C2, the second inductance L2 are sequentially connected in series at two
Between first terminals of three electric capacity C31 and C32 tie point and transformer T the first side winding；Share the first of inductance Lm
End is connected to the first inductance L1 and the second electric capacity C2 tie point and second end for sharing inductance Lm connects the first copped wave respectively
Second terminals of two switching tubes Q1, Q2 of unit tie point and transformer T the first side winding.
In addition, as shown in figure 8, above-mentioned first copped wave unit can use H bridge copped wave structures, the second copped wave unit is then using single
Bridge arm copped wave structure, the first copped wave unit is connected to transformer T the first side winding via resonator, and the second copped wave unit is then
Transformer T the second side winding is connected, and realizes bi-directional energy conversion by this way.
Similarly, as shown in figure 9, H bridge copped wave structures can be respectively adopted in above-mentioned first copped wave unit and the second copped wave unit,
First copped wave unit is connected to transformer T the first side winding via resonator, and the second copped wave unit then connects transformer T's
Second side winding, and bi-directional energy conversion is realized by this way.
As shown in Figure 10, above-mentioned first copped wave unit can use single bridge arm copped wave structure, and the second copped wave unit then uses H bridges
Copped wave structure, the first copped wave unit is connected to transformer T the first side winding via resonator, and the second copped wave unit then connects
Transformer T the second side winding, and bi-directional energy conversion is realized by this way.
The second inductance L2 in Fig. 5,7-10 embodiment can be integrated into transformer T, so as to save an inductance element.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (9)
- A kind of 1. reversible transducer, it is characterised in that：Including transformer and resonator；The resonator is by positive LLC resonance Circuit and reverse LLC resonance circuits are formed, and the positive LLC resonance circuits and reverse LLC resonance circuits are connected in series to change First side winding of depressor；The positive LLC resonance circuits and reverse LLC resonance circuits have a shared inductance, and described The one end for sharing inductance is directly connected to the first side winding of transformer.
- 2. reversible transducer according to claim 1, it is characterised in that：The reversible transducer also includes outside connection first First copped wave unit of connecting terminal, the second copped wave unit for connecting the second external terminal；The first copped wave unit is via resonance Chamber is connected to the first side winding of the transformer, and the second copped wave unit be connected to the second side of the transformer around Group.
- 3. reversible transducer according to claim 2, it is characterised in that：The first copped wave unit uses single bridge arm copped wave Structure or H bridge arm copped wave structures；The second copped wave unit uses single bridge arm structure or H bridge copped wave structures.
- 4. reversible transducer according to claim 2, it is characterised in that：The positive LLC resonance circuits are by one first Inductance, first electric capacity and shared inductance are formed, and the reversely LLC resonance circuits are by second inductance, second electricity Hold and shared inductance is formed；First inductance, the first electric capacity, the second electric capacity and the second inductance are connected in series in the first copped wave list Between first terminals of the first terminals of member and the first side winding of transformer；The first end of the shared inductance is connected to The tie point of first electric capacity and second electric capacity, the second end of the shared inductance is directly connected to the first copped wave unit The second terminals and the first side of transformer winding the second terminals.
- 5. reversible transducer according to claim 4, it is characterised in that：Flowed in energy by the first external terminal outside second During connecting terminal, the chopping frequency of the first copped wave unit is more than：Wherein, C1For the capacitance of the first electric capacity, L1For the inductance value of the first inductance, LmIt is common With the inductance value of inductance.
- 6. reversible transducer according to claim 4, it is characterised in that：Flowed in energy by the second external terminal outside first During connecting terminal, the chopping frequency of the second copped wave unit is more than：Wherein, C2For the capacitance of the second electric capacity, L2For the inductance value of the second inductance, LmFor Share the inductance value of inductance.
- 7. reversible transducer according to claim 2, it is characterised in that：The positive LLC resonance circuits by the first inductance, Two the 3rd electric capacity and shared inductance are formed, and the reversely LLC resonance circuits are by the second inductance, the second electric capacity and shared inductance structure Into；Described two 3rd electric capacity are connected in series between two terminals of the first external terminal；First inductance, the second electricity Hold, the second inductance is sequentially connected in series the first terminals in the tie point of two the 3rd electric capacity and the first side winding of transformer Between；The first end of the shared inductance is connected to the tie point of the first inductance and the second electric capacity, and the of the shared inductance Two ends connect the second wiring of the tie point of two switching tubes of the first copped wave unit and the first side winding of transformer respectively End.
- 8. according to the reversible transducer any one of claim 4-7, it is characterised in that：Second inductance is integrated into institute State transformer.
- 9. according to the reversible transducer any one of claim 2-7, it is characterised in that：The first copped wave unit and Two copped wave units have filter capacitor respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548102.6U CN206992965U (en) | 2017-05-17 | 2017-05-17 | Reversible transducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548102.6U CN206992965U (en) | 2017-05-17 | 2017-05-17 | Reversible transducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206992965U true CN206992965U (en) | 2018-02-09 |
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ID=61389895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720548102.6U Active CN206992965U (en) | 2017-05-17 | 2017-05-17 | Reversible transducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206992965U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988645A (en) * | 2018-06-28 | 2018-12-11 | 湘潭大学 | A kind of novel soft switch two-way DC-DC converter topology based on LLC resonance |
| CN111262439A (en) * | 2018-11-30 | 2020-06-09 | 英飞凌科技奥地利有限公司 | Power converter and method for assembling power converter |
| CN112260543A (en) * | 2020-09-19 | 2021-01-22 | 许继电源有限公司 | High-gain high-frequency isolation bidirectional cascade DC/DC converter and control method thereof |
-
2017
- 2017-05-17 CN CN201720548102.6U patent/CN206992965U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988645A (en) * | 2018-06-28 | 2018-12-11 | 湘潭大学 | A kind of novel soft switch two-way DC-DC converter topology based on LLC resonance |
| CN111262439A (en) * | 2018-11-30 | 2020-06-09 | 英飞凌科技奥地利有限公司 | Power converter and method for assembling power converter |
| CN112260543A (en) * | 2020-09-19 | 2021-01-22 | 许继电源有限公司 | High-gain high-frequency isolation bidirectional cascade DC/DC converter and control method thereof |
| CN112260543B (en) * | 2020-09-19 | 2022-06-24 | 许继电源有限公司 | High-gain high-frequency isolation bidirectional cascade DC/DC converter and control method thereof |
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Address after: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee after: Suzhou Huichuan United Power System Co.,Ltd. Address before: 215000 52 tianedang Road, Yuexi, Wuzhong District, Suzhou City, Jiangsu Province Patentee before: SUZHOU HUICHUAN UNITED POWER SYSTEM Co.,Ltd. |