CN203119768U - Integrated transformer suitable for flyback circuit connected in interleaving and parallel mode - Google Patents
Integrated transformer suitable for flyback circuit connected in interleaving and parallel mode Download PDFInfo
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- CN203119768U CN203119768U CN 201320091008 CN201320091008U CN203119768U CN 203119768 U CN203119768 U CN 203119768U CN 201320091008 CN201320091008 CN 201320091008 CN 201320091008 U CN201320091008 U CN 201320091008U CN 203119768 U CN203119768 U CN 203119768U
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Abstract
The utility model provides an integrated transformer suitable for a flyback circuit connected in an interleaving and parallel mode. The integrated transformer comprises a main transformer upper magnetic core, a main transformer lower magnetic core, a first transformer framework, and a second transformer framework, wherein the main transformer upper magnetic core and the main transformer lower magnetic core are arranged in a stacking and corresponding mode to form a closed magnetic core, and coils are arranged on the first transformer framework and the second transformer framework to be buckled together inside the closed magnetic core. The closed magnetic core comprises a first middle column, a second middle column, and a public magnetic core, wherein the first middle column and the second middle column are respectively provided with a first transformer air gap and a second transformer air gap which divide the closed magnetic core into an upper part and a lower part, a first transformer coil and a second transformer coil are respectively wound on the first middle column and the second middle column, the winding direction of the first transformer coil and the winding direction of the second transformer coil are opposite, and a first magnetic flow generated by a transformer where the first middle column is located and a second magnetic flow generated by a transformer where the second middle column is located are opposite in direction on a public magnetic core. The integrated transformer suitable for the flyback circuit connected in the interleaving and parallel mode lowers consumption of transformers in the flyback circuit connected in the interleaving and parallel mode, lowers the size of the whole circuit, lowers cost, and improves efficiency and power intensity of the flyback circuit.
Description
Technical field
The utility model relates to the transformer technology field, and specifically, the utility model relates to a kind of integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation.
Background technology
Transformer is magnetic element important in the converters, also is the key factor that the miniaturization of restriction converters, efficient and power density promote.(instead swash miniature inverter such as the solar photovoltaic grid-connection crisscross parallel) in the circuit occasion that the interleaving inverse excitation parallel circuits is used, two anti-violent change depressors are key factors of the further miniaturization of the miniature inverter of restriction.Crisscross parallel circuit of reversed excitation structure is conducive to increase power output, reduces ripple, thereby can reduce filter circuit.If two anti-violent change depressors are integrated, just can reduce the overall volume of transformer, improve efficient and the power density of converter.
Fig. 1 is the topological structure schematic diagram of a kind of discrete transformer of the prior art in the crisscross parallel circuit of reversed excitation.As shown in Figure 1, in this crisscross parallel circuit of reversed excitation, two-way has transformer 100,100 ' respectively, current transformer 101,101 ', and switch element 102,102 '.Wherein, transformer 100 and 100 ' all is the anti-violent change depressors of existing conventional.Current transformer 101,101 ' detects the electric current of transformer 100,100 ' main limit winding respectively.Switch element (for example being MOSFET) 102,102 ' be as the switching tube in this crisscross parallel circuit of reversed excitation, and the driving signal of two switching tubes is staggered complementary, the circuit work that interlocks.
Because circuit of reversed excitation, anti-violent change depressor magnetic material usage under equal power capacity is more, so existing two anti-violent change depressors 100,100 ' volume are bigger, magnetic loss is also higher, becomes a bottleneck of this circuit of reversed excitation topological structure of restriction.In addition, current transformer 101,101 ' has also increased parts number and circuit area, and energy loss.
Summary of the invention
Technical problem to be solved in the utility model provides a kind of integrated transformer structure that is applicable to the crisscross parallel circuit of reversed excitation, reduce the loss of transformer in the crisscross parallel circuit of reversed excitation, reduce the volume of entire circuit, reduce cost, improve efficient and the power density of crisscross parallel circuit of reversed excitation.
For solving the problems of the technologies described above, the utility model provides a kind of integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation, comprises magnetic core under magnetic core on the main transformer, the main transformer, first transformer framework and second transformer framework; Open Side Down for magnetic core on the described main transformer, and the opening of magnetic core makes progress under the described main transformer, and both repeatedly put at correspondence, constitute the closed magnetic core of described integrated transformer; Has winding on described first transformer framework and described second transformer framework, together by in magnetic core is fastened under magnetic core on the described main transformer and the described main transformer; Described closed magnetic core comprises first center pillar, second center pillar and common core, and described first center pillar has the first transformer air gap, is divided into two parts up and down by it, and described second center pillar has the second transformer air gap, also is divided into two parts up and down by it; Be wound with first Transformer Winding on described first center pillar, be wound with second Transformer Winding on described second center pillar, described first Transformer Winding and described second Transformer Winding around to opposite; First magnetic flux that the transformer at the described first center pillar place produces is opposite with the direction of second magnetic flux on described common core that the transformer at the described second center pillar place produces.
Alternatively, described integrated transformer also comprises the first current detecting device and the second current detecting device, is respectively applied to detect the electric current of the main limit winding of the described first center pillar place transformer and the described second center pillar place transformer.
Alternatively, the described first current detecting device and the described second current detecting device are respectively first current transformer and second current transformer, have winding on the magnetic core of the magnetic core of described first current transformer and described second current transformer.
Alternatively, the described first current detecting device and the described second current detecting device are respectively the first current detecting chip and the second current detecting chip.
Alternatively, described crisscross parallel circuit of reversed excitation has the multichannel greater than 2 tunnel.
Alternatively, when described crisscross parallel circuit of reversed excitation had 4 the tunnel, described closed magnetic core integral body was cross.
Compared with prior art, the utlity model has following advantage:
The utility model integrates two or more anti-violent change depressors by the mode of common sparing magnetic circuit, just can reduce the overall volume of transformer, improves efficient and the power density of converter.
In addition, the utility model also can be by with current detecting device (as current transformer) and transformer integrated, in the circuit occasion that the crisscross parallel circuit of reversed excitation is used, (instead swash miniature inverter such as the solar photovoltaic grid-connection crisscross parallel), advance the further miniaturization of miniature inverter, reduced cost, improved efficient.
Description of drawings
The above and other feature of the present utility model, character and advantage will become more obvious by the description below in conjunction with drawings and Examples, wherein:
Fig. 1 is the topological structure schematic diagram of a kind of discrete transformer of the prior art in the crisscross parallel circuit of reversed excitation;
Fig. 2 be an embodiment of the utility model employing the topological structure schematic diagram of crisscross parallel circuit of reversed excitation of integrated transformer;
Fig. 3 is the decomposition texture schematic diagram of the integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model;
Fig. 4 is the inside magnetic path structure schematic diagram of the integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model;
Fig. 5 drives the magnetic flux working waveform figure in time of signal and integrated transformer for the switching tube that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model;
Fig. 6 be another embodiment of the utility model employing the topological structure schematic diagram of crisscross parallel circuit of reversed excitation of integrated transformer.
Embodiment
The utility model is described in further detail below in conjunction with specific embodiments and the drawings; set forth more details in the following description so that fully understand the utility model; but the utility model obviously can be implemented with the multiple alternate manner that is different from this description; those skilled in the art can do similar popularization, deduction according to practical situations under the situation of the utility model intension, therefore should be with the content constraints of this specific embodiment protection range of the present utility model.
Fig. 2 be an embodiment of the utility model employing the topological structure schematic diagram of crisscross parallel circuit of reversed excitation of integrated transformer.It should be noted that this and follow-up other accompanying drawing all only as example, it is not to be to draw according to the condition of equal proportion, and should not be construed as limiting as the protection range to the actual requirement of the utility model with this.As shown in Figure 2, adopted integrated transformer 200 of the present utility model in this crisscross parallel circuit of reversed excitation, replace two discrete transformer 100 among Fig. 1,100 ' and two current transformer 101,101 ', only two switch elements 201,202 have been stayed the outside.Application integration transformer 200 has not only reduced the volume of circuit, and the loss of integrated transformer 200 is less, has improved the conversion efficiency of entire circuit.
Fig. 3 is the decomposition texture schematic diagram of the integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model.As shown in Figure 3, this integrated transformer mainly comprises on the main transformer magnetic core 302, first transformer framework 303 and second transformer framework 304 under magnetic core 301, the main transformer.Wherein, Open Side Down for magnetic core 301 on the main transformer, and the opening of magnetic core 302 makes progress under the main transformer, and both repeatedly put at correspondence, constitutes the closed magnetic core of integrated transformer.Has the winding (not shown) on first transformer framework 303 and second transformer framework 304, together by in magnetic core 302 is fastened under magnetic core on the main transformer 301 and the main transformer.
Fig. 4 is the inside magnetic path structure schematic diagram of the integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model.As shown in Figure 4, magnetic core 20 correspondences are repeatedly put and are formed under the main transformer that made progress by magnetic core 10 and opening on the main transformer that Open Side Down of the closed magnetic core of integrated transformer.This closed magnetic core comprises first center pillar 16, second center pillar 26 and common core 30 at least.Wherein, first center pillar 16 has the first transformer air gap 15, is divided into two parts up and down by it; Second center pillar 26 has the second transformer air gap 25, also is divided into two parts up and down by it.Be wound with on first center pillar 16 be wound with on first Transformer Winding 12,13, the second center pillars 26 second Transformer Winding 22,23, the first Transformer Winding 12,13 with second Transformer Winding 22,23 around to opposite.First magnetic flux 14 that the transformer at first center pillar, 16 places produces is opposite with the direction of second magnetic flux 24 on common core 30 that the transformer at second center pillar, 26 places produces.
The magnetic flux (A magnetic flux Φ, B magnetic flux Φ) that Fig. 5 drives signal (drive A, drive B) and integrated transformer for the switching tube that is applicable to the crisscross parallel circuit of reversed excitation of an embodiment of the utility model is the working waveform figure of t in time.As shown in Figure 5, drive waveforms 500 can be the driving signal (driving A) of switching tube 201 among Fig. 2, and drive waveforms 501 can be the driving signal (driving B) of switching tube 202 among Fig. 2, drives A and drive these two of B to drive signal complementation interlaced with each other.And in the integrated transformer profile of the magnetic flux phi of random time t shown in 502,503, integrated transformer is in the magnetization that repeats with switching frequency and the operating state that resets, partly have the part magnetic flux overlapping in common core, and direction is opposite, shown in dash area among Fig. 5 504.Exactly because the magnetic flux of dash area 504 disappears mutually, thereby can reduce magnetic loss, improve efficient; And the common core part can be done little, can save the magnetic material, and it is little that integrated transformer integral body is done.
In the above-described embodiments, integrated transformer shown in Figure 3 for example, it can comprise the first current detecting device and the second current detecting device, is respectively applied to detect the electric current of the main limit winding of first center pillar, 16 place transformers and second center pillar, 26 place transformers.Further, this first current detecting device and this second current detecting device can be respectively first current transformer and second current transformer, have the winding (not shown) on the magnetic core 305 of first current transformer and the magnetic core 306 of second current transformer.This first current detecting device and this second current detecting device can also can satisfy the device that this design current detects needs for other, such as the first current detecting chip and the second current detecting chip.But it is integrated that this integrated transformer also can be main transformer, do not comprise the current detecting device, as current transformer etc.Fig. 6 be another embodiment of the utility model employing the topological structure schematic diagram of crisscross parallel circuit of reversed excitation of integrated transformer.As shown in Figure 6, main transformer part that this integrated transformer is only integrated, and with the current detecting device, as current transformer 601,601 ' and switch element 602,602 ' etc. stay the outside.
At last, in the utility model, this crisscross parallel circuit of reversed excitation also can be the multichannel structure greater than 2 tunnel, as 3 the tunnel, the 4 tunnel etc.If the crisscross parallel circuit of reversed excitation has 4 line structures, closed magnetic core can be that integral body is cross.
The utility model integrates two or more anti-violent change depressors by the mode of common sparing magnetic circuit, just can reduce the overall volume of transformer, improves efficient and the power density of converter.
In addition, the utility model also can be by with current detecting device (as current transformer) and transformer integrated, in the circuit occasion that the crisscross parallel circuit of reversed excitation is used, (instead swash miniature inverter such as the solar photovoltaic grid-connection crisscross parallel), advance the further miniaturization of miniature inverter, reduced cost, improved efficient.
Though the utility model with preferred embodiment openly as above, it is not to limit the utility model, and any those skilled in the art can make possible change and modification in not breaking away from spirit and scope of the present utility model.Therefore, every content that does not break away from technical solutions of the utility model, all falls within the protection range that the utility model claim defines any modification, equivalent variations and modification that above embodiment does according to technical spirit of the present utility model.
Claims (6)
1. an integrated transformer that is applicable to the crisscross parallel circuit of reversed excitation is characterized in that, comprises magnetic core (302) under magnetic core on the main transformer (301), the main transformer, first transformer framework (303) and second transformer framework (304); Open Side Down for magnetic core on the described main transformer (301), and the opening of magnetic core under the described main transformer (302) makes progress, and both repeatedly put at correspondence, constitute the closed magnetic core of described integrated transformer; Has winding on described first transformer framework (303) and described second transformer framework (304), together by in magnetic core (302) is fastened under magnetic core (301) and the described main transformer on the described main transformer; Described closed magnetic core comprises first center pillar (16), second center pillar (26) and common core (30), described first center pillar (16) has the first transformer air gap (15), be divided into two parts up and down by it, described second center pillar (26) has the second transformer air gap (25), also is divided into two parts up and down by it; Be wound with first Transformer Winding (12,13) on described first center pillar (16), be wound with second Transformer Winding (22,23) on described second center pillar (26), described first Transformer Winding (12,13) and described second Transformer Winding (22,23) around to opposite; First magnetic flux (14) that the transformer at described first center pillar (16) place produces is opposite with the direction of second magnetic flux (24) on described common core (30) that the transformer at described second center pillar (26) place produces.
2. integrated transformer according to claim 1, it is characterized in that, also comprise the first current detecting device and the second current detecting device, detect the electric current of the main limit winding of described first center pillar (16) place transformer and described second center pillar (26) place transformer respectively.
3. integrated transformer according to claim 2, it is characterized in that, the described first current detecting device and the described second current detecting device are respectively first current transformer and second current transformer, have winding on the magnetic core (306) of the magnetic core of described first current transformer (305) and described second current transformer.
4. integrated transformer according to claim 2 is characterized in that, the described first current detecting device and the described second current detecting device are respectively the first current detecting chip and the second current detecting chip.
5. integrated transformer according to claim 1 is characterized in that, described crisscross parallel circuit of reversed excitation has the multichannel greater than 2 tunnel.
6. integrated transformer according to claim 5 is characterized in that, when described crisscross parallel circuit of reversed excitation had 4 the tunnel, described closed magnetic core integral body was cross.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091008 CN203119768U (en) | 2013-02-28 | 2013-02-28 | Integrated transformer suitable for flyback circuit connected in interleaving and parallel mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320091008 CN203119768U (en) | 2013-02-28 | 2013-02-28 | Integrated transformer suitable for flyback circuit connected in interleaving and parallel mode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203119768U true CN203119768U (en) | 2013-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320091008 Expired - Lifetime CN203119768U (en) | 2013-02-28 | 2013-02-28 | Integrated transformer suitable for flyback circuit connected in interleaving and parallel mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203119768U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107704A (en) * | 2013-02-28 | 2013-05-15 | 浙江昱能光伏科技集成有限公司 | Integrated transformer suitable for interleaving parallel flyback circuit |
| CN104065274A (en) * | 2014-07-10 | 2014-09-24 | 航天长峰朝阳电源有限公司 | Integrated interleaved flyback redundant parallel DC/DC power module |
| EP3840206A1 (en) * | 2019-12-18 | 2021-06-23 | Solaredge Technologies Ltd. | Inverter apparatus |
-
2013
- 2013-02-28 CN CN 201320091008 patent/CN203119768U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103107704A (en) * | 2013-02-28 | 2013-05-15 | 浙江昱能光伏科技集成有限公司 | Integrated transformer suitable for interleaving parallel flyback circuit |
| CN104065274A (en) * | 2014-07-10 | 2014-09-24 | 航天长峰朝阳电源有限公司 | Integrated interleaved flyback redundant parallel DC/DC power module |
| EP3840206A1 (en) * | 2019-12-18 | 2021-06-23 | Solaredge Technologies Ltd. | Inverter apparatus |
| US11923122B2 (en) | 2019-12-18 | 2024-03-05 | Solaredge Technologies Ltd. | Inverter apparatus |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: ZHEJIANG YUNENG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: ALTENERGY POWER SYSTEM INC. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee after: Zhejiang Yuneng Technology Co.,Ltd. Address before: 314050 Jiaxing, South Lake District, Zhejiang, Asia Pacific Road, No. 1 Patentee before: ALTENERGY POWER SYSTEM, Inc. |
|
| CP03 | Change of name, title or address |
Address after: 3 / F, building 1, No. 1, Asia Pacific Road (Jiaxing Science and technology city), Nanhu District, Jiaxing City, Zhejiang Province Patentee after: Yuneng Technology Co.,Ltd. Address before: 314050 No. 1 Asia Pacific Road, Nanhu District, Zhejiang, Jiaxing Patentee before: Zhejiang Yuneng Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130807 |
|
| CX01 | Expiry of patent term |