CN206992959U - Two-way resonance converter - Google Patents
Two-way resonance converter Download PDFInfo
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- CN206992959U CN206992959U CN201720548105.XU CN201720548105U CN206992959U CN 206992959 U CN206992959 U CN 206992959U CN 201720548105 U CN201720548105 U CN 201720548105U CN 206992959 U CN206992959 U CN 206992959U
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- inductance
- copped wave
- electric capacity
- transformer
- wave unit
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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 two-way resonance converter, including transformer and be connected to the transformer the first side winding resonator；The resonator is made up of LC resonance circuits and LLC resonance circuits, and the LC resonance circuits and LLC resonance circuits are connected in series；The LC resonance circuits and LLC resonance circuits share first inductance, and one end of first inductance is directly connected to the first side winding of transformer.The utility model realizes that bidirectional energy transmits by the way that LC resonance circuits and LLC resonance circuits to be connected in series in the side of 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 two-way resonance converter.
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 chopper circuit being made up of switching tube Q5~Q8),
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 form energy
Amount transmission.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 two-way resonance converter, its feature
It is：Resonator including transformer and the first side winding for being connected to the transformer；The resonator is by LC resonance electricity
Road and LLC resonance circuits are formed, and the LC resonance circuits and LLC resonance circuits are connected in series；The LC resonance circuits and LLC
Resonance circuit shares first inductance, and one end of first inductance is directly connected to the first side winding of transformer.
In two-way resonance converter described in the utility model, the two-way resonance converter 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.
In two-way resonance converter described in the utility model, 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.
In two-way resonance converter described in the utility model, the LC resonance circuits are by first electric capacity and first
Inductance is formed, and the LLC resonance circuits are made up of second inductance, second electric capacity and the first inductance；First electricity
Hold, the second electric capacity and the second inductance be connected in series in the first terminals of the first copped wave unit and the first side winding of transformer
Between first terminals；The first end of first inductance is connected to the tie point of the first electric capacity and the second electric capacity, and described first
Second end of inductance is directly connected to the second wiring of the second terminals and the first side of transformer winding of the first copped wave unit
End.
In two-way resonance converter described in the utility model, the second external connection end is flowed to by the first external terminal in energy
The period of the day from 11 p.m. to 1 a.m, the chopping frequency of the first copped wave unit are more than：
Wherein, C1For the capacitance of the first electric capacity, L1For the inductance value of the first inductance.
In two-way resonance converter described in the utility model, the first external connection end is flowed to by the second external terminal in energy
The period of the day from 11 p.m. to 1 a.m, the chopping frequency of the second copped wave unit are more than：
Wherein, C2For the capacitance of the second electric capacity, L2For the inductance value of the second inductance, L1For
The inductance value of first inductance.
In two-way resonance converter described in the utility model, the LC resonance circuits by the first inductance, two the 3rd
Electric capacity is formed, and the LLC resonance circuits are made up of the second inductance, the second electric capacity and the first inductance；Described two 3rd electric capacity strings
Connection is connected between two terminals of the first external terminal；Second electric capacity, the second inductance are connected in series in two the 3rd
Between first terminals of the tie point of electric capacity and the first side winding of transformer；The first end of first inductance is connected to two
The tie point of individual 3rd electric capacity, and the second end of first inductance connects the company of two switching tubes of the first copped wave unit respectively
Second terminals of the first side winding of contact and transformer.
In two-way resonance converter described in the utility model, second inductance is integrated into the transformer.
In two-way resonance converter described in the utility model, the first copped wave unit and the second copped wave unit difference
With filter capacitor.
Two-way resonance converter of the present utility model has the advantages that：By by LC resonance circuits and LLC resonance
The side that circuit connected in series is connected to transformer realizes that bidirectional energy transmits, and can not only reduce component number and raising power is close
Degree, 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 controlled resonant converter；
Fig. 3 is the circuit topology figure of the two-stage bidirectional controlled resonant converter of existing double active structures；
Fig. 4 is the circuit topology figure of the two-way resonance converter of existing bilateral two-way resonance structure；
Fig. 5 is the schematic diagram of the utility model two-way resonance converter first embodiment；
Fig. 6 is waveform diagram of the two-way resonance converter when forward direction works in Fig. 5；
Fig. 7 is the schematic diagram of the utility model two-way resonance converter second embodiment；
Fig. 8 is the schematic diagram of the utility model two-way resonance converter 3rd embodiment；
Fig. 9 is the schematic diagram of the utility model two-way resonance converter fourth embodiment；
Figure 10 is the schematic diagram of the embodiment of the utility model two-way resonance converter 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 two-way resonance converter first embodiment.It is double in the present embodiment
Include transformer T and resonator 51 to controlled resonant converter, and resonator 51 is located at transformer T side.Above-mentioned resonator 51
It is made up of LC resonance circuits and LLC resonance circuits, and LC resonance circuits and LLC resonance circuits are connected in series to the of transformer T
Side winding；Above-mentioned LC resonance circuits and LLC resonance circuits share a first inductance L1, and one end of the shared inductance L1 is straight
Transformer T the first side winding is connected in succession.
Above-mentioned two-way resonance converter may also include the first external terminal V1 of connection the first copped wave unit, connect outside second
Connecting terminal V2 the second copped wave unit；Above-mentioned first copped wave unit is connected to transformer T the first side winding via resonator 51,
And second copped wave unit be connected to transformer T the second side winding.When forward direction is transmitted, energy is from the first external terminal V1 through humorous
Shake chamber 51 and transformer T flows to the second external terminal V2；During reverse transfer, energy from the second external terminal V2 through transformer T and
Resonator 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.
LC resonance circuits are made up of a first electric capacity C1 and the first inductance L1, and LLC resonance circuits are by second inductance
L2, a second electric capacity C2 and the first inductance L1 are formed；Above-mentioned first electric capacity C1, the second electric capacity C2, the second inductance L2 go here and there successively
Connection is connected to the first terminals (i.e. two switching tubes Q1 and Q2 tie point) of the first copped wave unit and transformer T the first side
Between first terminals of winding (such as the winding in the left side of the transformer T shown in Fig. 5), wherein the second electric capacity C2, the second electricity
Feel L2 position interchangeable；First inductance L1 first end is connected to the first electric capacity C1 and the second electric capacity C2 tie point, first
Inductance L1 the second end is directly connected to the second terminals (i.e. the first external terminal V1 negative pole) of the first copped wave unit, and first
Inductance L1 the second end is also connected to the second terminals of transformer T the first side winding.
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.The resonator 51 that first electric capacity C1, the first inductance L1, the second electric capacity C2 and the second inductance L2 are formed
It will increase or maintain the amplitude of square-wave voltage.The voltage that resonator 51 exports is depressured or boosted by transformer T, finally
By two switching tube Q3 and Q4 synchronous rectifications of the second copped wave unit of the sides of transformer T second (secondary) into direct voltage output
Output filtering is realized to the second external terminal V2, and by second external terminal V2 electric capacity.
As shown in fig. 6, respectively the waveform of the pole tension of switching tube Q2 source and drain two (i.e. the output voltage of the first copped wave unit),
From the waveform of the first electric capacity C1 outflow electric currents, (solid line is waveform, the dotted line for the electric current that the second electric capacity C2 is flowed to from the first electric capacity C1
To flow to the first inductance L1 current waveform from the first electric capacity C1), flow to from the second electric capacity C2 the waveforms of the second inductance L2 electric currents.
In above process, the first electric capacity C1, the first inductance L1 form LC resonance, the gain of resonator 51 mainly by the first electric capacity C1,
The first inductance L1 is controlled.Now resonator 51 only has a low-frequency resonant frequency, as shown in calculating formula (1)：
In the calculating formula (1), C1For the first electric capacity C1 capacitance, L1For the first inductance L1 inductance value.I.e. positive transmission
When two-way resonance converter tuning range be more than fL, fFrequency range.The two-way resonance converter can use the tune of the above
Frequency mode can both control the forward flow of converter energy, can increase output voltage by reducing switching frequency again, pass through
Switching frequency is improved to reduce output voltage.
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, the second electric capacity C2 and
The resonator 51 of two inductance L2 compositions will increase or maintain the amplitude of square-wave voltage.Two switches of last first copped wave unit
The output voltage of resonator 51 is carried out halfwave rectifier formation output voltage and exported by corresponding electric capacity by pipe Q1 and Q2
Filtering.In above process, the second electric capacity C2, the second inductance L2 and the first inductance L1 form LLC resonance, the gain of resonator 51
Mainly controlled by the second electric capacity C2, the second inductance L2 and the first inductance L1.Reverse operation can produce two high frequency, low frequency resonance
Frequency point, shown in low-frequency resonant Frequency point such as calculating formula (2)：
Shown in high-frequency resonant Frequency point such as calculating formula (3)：
In calculating formula (2), (3), L1For the first inductance L1 inductance value, C2For the second electric capacity C2 capacitance, L2For second
Inductance L2 inductance value.Now, tuning range is typically greater than fL, bFrequency range.More than the two-way resonance converter uses
Mode of frequency regulation can both control the reverse flow of converter energy, can increase output voltage by reducing switching frequency again,
Output voltage is reduced by improving switching frequency.
As shown in fig. 7, the first electric capacity in above-mentioned LC resonance circuits can be the first electric capacity C1 in Fig. 5 by two capacitances
3rd electric capacity C31 and C32 of capacitance half is formed, and this two the 3rd electric capacity C31 and C32 are connected in series in the first external terminal V1
Two terminals between；Second electric capacity C2, the second inductance L2 are connected in series in two the 3rd electric capacity C31 and C32 tie point
Between the first terminals of transformer T the first side winding；First inductance L1 first end is connected to two the 3rd electric capacity C31
Connect two switching tubes Q1, Q2 of the first copped wave unit company respectively with the second end of C32 tie point and first inductance L1
Second terminals of contact 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. two-way resonance converter, it is characterised in that：Including transformer and be connected to the first side of the transformer around The resonator of group；The resonator is made up of LC resonance circuits and LLC resonance circuits, and the LC resonance circuits and LLC resonance Circuit connected in series connects；The LC resonance circuits and LLC resonance circuits share first inductance, and one end of first inductance It is directly connected to the first side winding of transformer.
- 2. two-way resonance converter according to claim 1, it is characterised in that：The two-way resonance converter also includes connecting Connect the first copped wave unit of the first external terminal, connect the second copped wave unit of the second external terminal；The first copped wave unit The first side winding of the transformer is connected to via resonator, and the second copped wave unit is connected to the of the transformer Two side windings.
- 3. two-way resonance converter 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. two-way resonance converter according to claim 2, it is characterised in that：The LC resonance circuits are by one first electricity Hold and the first inductance is formed, the LLC resonance circuits are made up of second inductance, second electric capacity and the first inductance；Institute State the first electric capacity, the second electric capacity and the second inductance be connected in series in the first copped wave unit the first terminals and transformer first Between first terminals of side winding；The first end of first inductance is connected to the tie point of the first electric capacity and the second electric capacity, Second end of first inductance is directly connected to the second terminals and the first side of transformer winding of the first copped wave unit Second terminals.
- 5. two-way resonance converter according to claim 4, it is characterised in that：In energy is flowed to by the first external terminal During two external terminals, 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.
- 6. two-way resonance converter according to claim 4, it is characterised in that：In energy is flowed to by the second external terminal During one external 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, L1For first The inductance value of inductance.
- 7. two-way resonance converter according to claim 2, it is characterised in that：The LC resonance circuits by the first inductance, Two the 3rd electric capacity are formed, and the LLC resonance circuits are made up of the second inductance, the second electric capacity and the first inductance；Described two Three electric capacity are connected in series between two terminals of the first external terminal；Second electric capacity, the second inductance are connected in series in Between first terminals of the tie point of two the 3rd electric capacity and the first side winding of transformer；The first end of first inductance It is connected to the tie point of two the 3rd electric capacity, and the second end of first inductance connects two of the first copped wave unit and opened respectively Close the second terminals of the tie point of pipe and the first side winding of transformer.
- 8. the two-way resonance converter according to any one of claim 4-7, it is characterised in that：Second inductance integrates To the transformer.
- 9. the two-way resonance converter according to any one of claim 2-7, it is characterised in that：The first copped wave unit There is filter capacitor respectively with the second copped wave unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548105.XU CN206992959U (en) | 2017-05-17 | 2017-05-17 | Two-way resonance converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720548105.XU CN206992959U (en) | 2017-05-17 | 2017-05-17 | Two-way resonance converter |
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| Publication Number | Publication Date |
|---|---|
| CN206992959U true CN206992959U (en) | 2018-02-09 |
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| CN201720548105.XU Active CN206992959U (en) | 2017-05-17 | 2017-05-17 | Two-way resonance converter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707931A (en) * | 2019-09-06 | 2020-01-17 | 广州金升阳科技有限公司 | LLC resonant converter and control method |
-
2017
- 2017-05-17 CN CN201720548105.XU patent/CN206992959U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110707931A (en) * | 2019-09-06 | 2020-01-17 | 广州金升阳科技有限公司 | LLC resonant converter and control method |
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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. |