CN101593609A - A kind of core structure of magnetic integration multi-channel parallel transformer and circuit of reversed excitation thereof - Google Patents
A kind of core structure of magnetic integration multi-channel parallel transformer and circuit of reversed excitation thereof Download PDFInfo
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- CN101593609A CN101593609A CNA2009100382698A CN200910038269A CN101593609A CN 101593609 A CN101593609 A CN 101593609A CN A2009100382698 A CNA2009100382698 A CN A2009100382698A CN 200910038269 A CN200910038269 A CN 200910038269A CN 101593609 A CN101593609 A CN 101593609A
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Abstract
The invention discloses a kind of core structure of magnetic integration multi-channel parallel transformer, comprise upper component and lower member, the top and the bottom member is equipped with long conducting magnetic column more than one and the short conducting magnetic column more than two; Upper component is identical with the lower member shape, the corresponding magnetic conduction poles position distribution is identical; No air gap conducting magnetic column is formed in the long magnetic conduction relative bonding of the long magnetic conduction of upper component and lower member post, the short-range missile magnetic of upper component and the short-range missile magnetic of lower member post are oppositely arranged to form leaves the air gap conducting magnetic column, and the top and the bottom member engages the magnetic core of channeling shunt transformer according to each conducting magnetic column corresponding relation; Described each root is opened the primary and secondary winding that the air gap conducting magnetic column is used for a transformer of coiling.The invention has the advantages that: 1) improved anti exciting converter bigger defective of output ripple under the bigger application scenario of output current; 2) save the space greatly, and improve the utilization rate of magnetic material; 3) can reduce the power supply product volume, especially can reduce the height of power supply.
Description
Technical field
The present invention relates to a kind of core structure and circuit of reversed excitation thereof of transformer, relate in particular to a kind of core structure and circuit of reversed excitation thereof of magnetic integration multi-channel parallel transformer.
Background technology
Advantages such as anti exciting converter occupies critical role in the prior art, can realize wide voltage input, simple in structure, and is with low cost.And parallel circuits can resolve into big magnetic element some little magnetic elements and reach good result equally, and greatly reduces the height of power supply module, is easy to realize redundancy feature simultaneously.Therefore develop especially necessity of parallel flyback, but the present following problem of parallel flyback ubiquity: and output ripple is bigger under the bigger application scenario of output current, and it is big to take up room, and the utilization rate of magnetic material is low etc.
Summary of the invention
The object of the invention is to provide a kind of core structure that reduces output ripple, saving space and improve the magnetic material utilization rate, and corresponding circuit of reversed excitation is provided.
Purpose of the present invention can realize by following scheme: a kind of core structure of magnetic integration multi-channel parallel transformer is characterized in that comprise upper component and lower member, the top and the bottom member is equipped with long conducting magnetic column more than one and the short conducting magnetic column more than two; Upper component is identical with the lower member shape, the corresponding magnetic conduction poles position distribution is identical; No air gap conducting magnetic column is formed in the long magnetic conduction relative bonding of the long magnetic conduction of upper component and lower member post, the short-range missile magnetic of upper component and the short-range missile magnetic of lower member post are oppositely arranged to form leaves the air gap conducting magnetic column, and the top and the bottom member engages the magnetic core of channeling shunt transformer according to each conducting magnetic column corresponding relation; Described each root is opened elementary, the secondary winding that the air gap conducting magnetic column is used for a transformer of coiling.
Described upper component and lower member are circular platform types, and long conducting magnetic column prolongs the round platform axle center and is provided with, and some short conducting magnetic columns are provided with around arc length spacings such as round platform axle center circumference types.
Arc length spacings such as circumferential perimeter in described upper component and lower member are provided with the long conducting magnetic column of some circular arcs.
Described upper component and lower member are to be formed by connecting by a plurality of E type member one, and the centre of E type member is short conducting magnetic column, and the both sides of E type member are long conducting magnetic column; Described long conducting magnetic column is equidistantly spaced with short conducting magnetic column.
Described upper component and lower member are to be formed by connecting by a plurality of E type member one, all short conducting magnetic column in the middle of the whole integrated component, and the dual-side that has only member is long conducting magnetic column; Be equidistantly spaced between the described short conducting magnetic column.
The present invention also provides a kind of circuit of reversed excitation of using the magnetic integration multi-channel parallel transformer core structure, comprise the above main unit that shakes of two-way, the input of the main unit that shakes, every road is connected on the same power input, and the reference edge of the main unit that shakes, every road is connected to same power supply reference edge; The output of the main unit that shakes, every road also connects back output; It is characterized in that, also comprise control module, be used to send the variable connector signal; Each switching signal output of described control module connects the control end of the main unit that shakes, each road respectively; The core structure of the incorporate multi-channel parallel transformer of transformer adopting in the main unit that shakes, described each road, the primary and secondary winding technique is opened on the air gap conducting magnetic column described core structure.
Described control module comprises: Fractional-N frequency circuit and corresponding pulse-width modulation circuit, the multichannel fractional frequency signal output of described Fractional-N frequency circuit connects the fractional frequency signal input of each pulse-width modulation circuit respectively, the switching signal output of pulse-width modulation circuit connects the shake control end of unit of corresponding master, the corresponding one road main unit that shakes of pulse-width modulation circuit; The winding of every group of adjacent transformer bay adopts anti-phase or homophase coiling in the multi-channel parallel transformer, and drives every group of transformer at the same time successively.
Described control module comprises: pulse-width modulation circuit and delay circuit; The switching signal output of described pulse-width modulation circuit is the one tunnel direct wherein control end of the one road main unit that shakes that connects wherein, and other multichannels connect the control end of the corresponding main unit that shakes respectively by a delay circuit; The winding of every group of adjacent transformer bay adopts anti-phase or homophase coiling in the multi-channel parallel transformer, and drives every group of transformer at the same time successively.
Described control module includes only a pulse-width modulation circuit, and the switching signal output of described pulse-width modulation circuit connects the control end of the main unit that shakes, each road; The all anti-phase coiling of the winding of every group of adjacent transformer bay drives every group of transformer simultaneously in the multi-channel parallel transformer.
The advantage of the relative prior art of the present invention is:
1) improved anti exciting converter bigger defective of output ripple under the bigger application scenario of output current;
2) save the space greatly, and improved the utilization rate of magnetic material;
3) can reduce the volume of power supply product, especially can reduce the height of power supply.
Description of drawings
Fig. 1 is an E type core structure schematic diagram of the present invention;
Fig. 2 is circular platform type core structure schematic diagram A of the present invention;
Fig. 3 is circular platform type core structure schematic diagram B of the present invention;
Fig. 4 is a schematic block circuit diagram of the present invention;
Fig. 5 is a primary and secondary winding technique schematic diagram of the present invention;
Fig. 6 is Fractional-N frequency circuit theory diagrams of the present invention;
Fig. 7 is a delay circuit schematic diagram of the present invention;
Fig. 8 is an adjacent winding homophase coiling schematic diagram of the present invention;
Fig. 9 is the anti-phase coiling schematic diagram of adjacent winding of the present invention;
Figure 10 is a while drive circuit schematic diagram of the present invention;
Figure 11 the present invention is based on the anti-phase coiling of adjacent winding to simplify long conducting magnetic column structural representation.
Embodiment
The invention provides a kind of core structure of anti-violent change depressor, the core structure schematic diagram as shown in Figure 1, magnetic core 1 has comprised upper component 1a and lower member 1b.Upper component 1a and lower member 1b are respectively equipped with long conducting magnetic column 2 and short conducting magnetic column 3, and go up lower member 1a, the 1b shape is identical, the corresponding magnetic conduction poles position distribution is identical, the long conducting magnetic column 2 of top and the bottom member 1a, 1b or short conducting magnetic column 3 be correspondence one by one.Upper component 1a and lower member 1b are the rectangular-shaped members that a plurality of E types join together, and when last lower member 1a, 1b amalgamation, long conducting magnetic column end joined is formed no air gap conducting magnetic column; Short-range missile magnetic styletable face can not in conjunction with, form air gap, form and open the air gap conducting magnetic column.Described long conducting magnetic column 2 is provided with at interval with short conducting magnetic column 3, and the centre is short conducting magnetic column 3, and both sides are long conducting magnetic columns 2, and each opens the elementary winding and the secondary winding of one group of transformer of air gap conducting magnetic column coiling.
Core structure is formed by rectangular-shaped lower member 1a, the 1b joint of going up that a plurality of E types join together, and the centre of each E type member is short conducting magnetic column 3, and the both sides of each E type member are long conducting magnetic column 2; Described long conducting magnetic column 2 is equidistantly spaced with short conducting magnetic column 3; It is cylindrical opening the air gap conducting magnetic column, is beneficial to the coiling of winding and keeps the curvature of coiling to equate.Each primary winding and secondary winding all are wound on cylindrical opening on the air gap conducting magnetic column separately, and the winding between each adjacent transformers both can the homophase coiling, also can anti-phase coiling.
In the above-mentioned in addition core structure that is formed by connecting by a plurality of E type member one, all short conducting magnetic columns 3 in the middle of the whole integrated component, the dual-side that has only member is long conducting magnetic column 2; Be equidistantly spaced between the short conducting magnetic column 3, as shown in figure 11.
The EE magnetic core of the rectangle of core shapes in the foregoing description, multiple variation can also be arranged, provide several deformation programs below, wherein opening the air gap conducting magnetic column is to be used for the coiling Transformer Winding, and no air gap conducting magnetic column is the closed-loop path that is used to form magnetic conduction.
As shown in Figure 2, upper component 1a and lower member 1b are circular platform types, and long conducting magnetic column 2 prolongs the round platform axle center and is provided with, and four short conducting magnetic columns 3 are provided with around arc length spacings such as round platform axle center circumference types.On the basis of Fig. 2, four long conducting magnetic column 2a of arc can also be set in the arc length spacings such as periphery of upper component 1a and lower member 1b, as shown in Figure 3.Each primary winding and secondary winding all are wound on cylindrical opening on the air gap conducting magnetic column separately, and the winding between each adjacent transformers both can the homophase coiling, also can anti-phase coiling.
Fig. 5 has represented the elementary winding N1-N1 ' of same transformer and secondary winding N2-N2 ' the coiling mode at an E type magnetic core, and promptly the primary and secondary winding is equidirectional is wound on same opening on the air gap conducting magnetic column.Among Fig. 8,9,11 Succinct representation elementary winding N1-N1 ', and omit expression secondary winding N2-N2 ', the mode of secondary winding is identical with the elementary winding technique direction of same transformer.Certainly increase other feedback windings or multichannel output winding still at the present invention program's covering scope.Introduce the coiling mode of Transformer Winding below, each adjacent shunt transformer winding can homophase or anti-phase coiling.
The coiling mode of homophase as shown in Figure 8, all open winding N1-N1 ' the homophase coiling of air gap conducting magnetic column 3.
Anti-phase coiling as shown in Figure 9, the adjacent anti-phase coiling of winding N1-N1 ' of opening air gap conducting magnetic column 3.On conducting magnetic column, offset the part magnetic flux like this, further reduce the area of section of conducting magnetic column, thus the consumption of the material that deperms.
The present invention provides corresponding circuit of reversed excitation simultaneously according to above-mentioned core structure and winding technique mode.As shown in Figure 4, circuit of reversed excitation comprises the above main unit that shakes of two-way, and the main unit that shakes, every road comprises: transformer, diode and switch MOS pipe; Described power input connects the primary winding end of the same name of the main unit that shakes, each road, and every road primary winding different name end connects the shake drain electrode of switch MOS pipe of unit of this master, and the source electrode of every way switch metal-oxide-semiconductor connects the power supply reference edge; Every road transformer secondary output winding different name end connects the shake diode anode of unit of this master, and the secondary winding of the main unit transformer that shakes of each road diode cathode and each road end of the same name is formed voltage output end; The multi-way control signals output of control module connects the grid of the switch MOS pipe on each road respectively; The core structure of incorporate multi-channel parallel transformer shown in transformer adopting Fig. 1-Fig. 3 in the main unit that shakes, each road.
Concrete as shown in Figure 6 circuit of reversed excitation one of is implemented, and utilizes a Fractional-N frequency circuit to control the pwm circuit on each road, by each pwm circuit control switch pipe action.The multichannel fractional frequency signal output of Fractional-N frequency circuit connects the signal input part of the pwm circuit on each road respectively, and the switching signal output of pwm circuit connects the grid of switch MOS pipe; Power input connects the end of the same name of primary winding, and the different name end of primary winding connects the drain electrode of switch MOS pipe, and the source electrode of switch MOS pipe connects the power supply reference edge; Every road transformer secondary output winding different name end connects the shake diode anode of unit of this master, and the secondary winding of the main unit transformer that shakes of each road diode cathode and each road end of the same name is formed voltage output end.Sort circuit can be realized the peak current control of each converter.
Concrete as shown in Figure 7 another embodiment of circuit of reversed excitation, utilize a plurality of delay circuits to insert pwm control signal, the switching signal output of pwm circuit is one tunnel grid that does not directly connect a way switch metal-oxide-semiconductor by delay circuit wherein, and the switching signal output of all the other pwm circuits connects corresponding switching tube grid by delay circuit respectively.Power input connects the end of the same name of primary winding, and the different name end of primary winding connects the drain electrode of switch MOS pipe, and the source electrode of switch MOS pipe connects the power supply reference edge; Every road transformer secondary output winding different name end connects the shake diode anode of unit of this master, and the secondary winding of the main unit transformer that shakes of each road diode cathode and each road end of the same name is formed voltage output end.Sort circuit can be realized the peak current control of each converter.Sort circuit can be selected the control of univoltage ring or add the control of average current ring.
Will be successively during work at interval the identical time drive every group of transformer, typical transformer conducting order has following several:
Suppose that N is even number (N is that odd number also has similar order, no longer gives an example)
1-2-3-……-N；
1-3-5-……-N-1-2-3-4-……-N；
……
1-N/2-2-N/2+1-3-N/2+2-……-N/2-1-N。
When winding adopts anti-phase coiling, can also utilize and change further the deperm use of material of type of drive, concrete drive circuit as shown in figure 10, be that with above-mentioned circuit of reversed excitation difference control module has included only a pwm circuit, the control signal output ends of described pwm circuit connects the grid of each way switch metal-oxide-semiconductor; Power input connects the end of the same name of primary winding, and the different name end of primary winding connects the drain electrode of switch MOS pipe, and the source electrode of switch MOS pipe connects the power supply reference edge; Every road transformer secondary output winding different name end connects the shake diode anode of unit of this master, and the secondary winding of the main unit transformer that shakes of each road diode cathode and each road end of the same name is formed voltage output end.Sort circuit can be realized the peak current control of each converter.
Principle is that adjacent winding is anti-phase coiling, and all transformers drive simultaneously, can offset most of magnetic flux like this, does not therefore need additionally to increase no air gap conducting magnetic column, has saved magnetic material greatly.The core structure schematic diagram all is to lack conducting magnetic column 3 in the middle of on integrated EE type magnetic core as shown in figure 11, respectively has the difference of an above-mentioned relatively magnetic core of long conducting magnetic column 2 to be to have saved most of no air gap conducting magnetic column in both sides.
The present invention can solve anti exciting converter bigger defective of output ripple under the bigger application scenario of output current, and can save and take up room, and improves the utilization rate of magnetic material greatly.
Other the equivalent execution modes that are different from above embodiment that come by the present invention amplification or distortion all can be realized purpose of the present invention, will belong to protection scope of the present invention equally.
Claims (10)
1, a kind of core structure of magnetic integration multi-channel parallel transformer is characterized in that, comprises upper component and lower member, and the top and the bottom member is equipped with long conducting magnetic column more than one and the short conducting magnetic column more than two; Upper component is identical with the lower member shape, the corresponding magnetic conduction poles position distribution is identical; No air gap conducting magnetic column is formed in the long magnetic conduction relative bonding of the long magnetic conduction of upper component and lower member post, the short-range missile magnetic of upper component and the short-range missile magnetic of lower member post are oppositely arranged to form leaves the air gap conducting magnetic column, and the top and the bottom member engages the magnetic core of channeling shunt transformer according to each conducting magnetic column corresponding relation; Described each root is opened elementary, the secondary winding that the air gap conducting magnetic column is used for a transformer of coiling.
2, the core structure of a kind of magnetic integration multi-channel parallel transformer according to claim 1, it is characterized in that, described upper component and lower member are circular platform types, and long conducting magnetic column prolongs the round platform axle center and is provided with, and some short conducting magnetic columns are provided with around arc length spacings such as round platform axle center circumference types.
3, the core structure of a kind of magnetic integration multi-channel parallel transformer according to claim 2 is characterized in that, in the arc length spacings such as circumferential perimeter of described upper component and lower member the long conducting magnetic column of some circular arcs is set.
4, the core structure of a kind of magnetic integration multi-channel parallel transformer according to claim 1, it is characterized in that, described upper component and lower member are to be formed by connecting by a plurality of E type member one, and the centre of E type member is short conducting magnetic column, and the both sides of E type member are long conducting magnetic column.
5, the core structure of a kind of magnetic integration multi-channel parallel transformer according to claim 4 is characterized in that, described long conducting magnetic column is equidistantly spaced with short conducting magnetic column.
6, the core structure of a kind of magnetic integration multi-channel parallel transformer according to claim 1, it is characterized in that, described upper component and lower member are to be formed by connecting by a plurality of E type member one, all short conducting magnetic column in the middle of the whole integrated component, and the dual-side that has only member is long conducting magnetic column; Be equidistantly spaced between the described short conducting magnetic column.
7, a kind of circuit of reversed excitation of using the magnetic integration multi-channel parallel transformer core structure, comprise the above main unit that shakes of two-way, the input of the main unit that shakes, every road is connected on the same power input, and the reference edge of the main unit that shakes, every road is connected to same power supply reference edge; The output of the main unit that shakes, every road also connects back output; It is characterized in that, also comprise control module, be used to send the variable connector signal; Each switching signal output of described control module connects the control end of the main unit that shakes, each road respectively; The core structure of the incorporate multi-channel parallel transformer of transformer adopting in the main unit that shakes, described each road, the primary and secondary winding technique is opened on the air gap conducting magnetic column described core structure.
8, the circuit of reversed excitation of application magnetic integration multi-channel parallel transformer core structure according to claim 7, it is characterized in that, described control module comprises: Fractional-N frequency circuit and corresponding pulse-width modulation circuit, the multichannel fractional frequency signal output of described Fractional-N frequency circuit connects the fractional frequency signal input of each pulse-width modulation circuit respectively, the switching signal output of pulse-width modulation circuit connects the shake control end of unit of corresponding master, the corresponding one road main unit that shakes of pulse-width modulation circuit; The winding of every group of adjacent transformer bay adopts anti-phase or homophase coiling in the multi-channel parallel transformer, and drives every group of transformer at the same time successively.
9, the circuit of reversed excitation of application magnetic integration multi-channel parallel transformer core structure according to claim 7 is characterized in that, described control module comprises: pulse-width modulation circuit and delay circuit; The switching signal output of described pulse-width modulation circuit is the one tunnel direct wherein control end of the one road main unit that shakes that connects wherein, and other multichannels connect the control end of the corresponding main unit that shakes respectively by a delay circuit; The winding of every group of adjacent transformer bay adopts anti-phase or homophase coiling in the multi-channel parallel transformer, and drives every group of transformer at the same time successively.
10, the circuit of reversed excitation of application magnetic integration multi-channel parallel transformer core structure according to claim 7, it is characterized in that, described control module includes only a pulse-width modulation circuit, and the switching signal output of described pulse-width modulation circuit connects the control end of the main unit that shakes, each road; The all anti-phase coiling of the winding of every group of adjacent transformer bay drives every group of transformer simultaneously in the multi-channel parallel transformer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910038269 CN101593609B (en) | 2009-03-27 | 2009-03-27 | Magnetic core structure of magnetic integration multi-channel parallel transformer and flyback circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910038269 CN101593609B (en) | 2009-03-27 | 2009-03-27 | Magnetic core structure of magnetic integration multi-channel parallel transformer and flyback circuit thereof |
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| CN101593609A true CN101593609A (en) | 2009-12-02 |
| CN101593609B CN101593609B (en) | 2011-08-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103081043A (en) * | 2010-10-20 | 2013-05-01 | 雅达电子国际有限公司 | Multi-winding magnetic structures |
| CN113012903A (en) * | 2021-02-04 | 2021-06-22 | 中车株洲电力机车研究所有限公司 | Control framework suitable for iron core magnetic circuit multiplexing electrical system |
| CN113300609A (en) * | 2021-05-24 | 2021-08-24 | 广东东菱电源科技有限公司 | Single-IC-driven multi-path single-stage PFC parallel circuit and working method thereof |
| CN114944273A (en) * | 2022-06-17 | 2022-08-26 | 威海东兴电子有限公司 | Magnetic integrated resonance power transformer |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104795224A (en) * | 2014-01-16 | 2015-07-22 | 华为技术有限公司 | Magnetic integrated element and power module |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5107390A (en) * | 1990-11-30 | 1992-04-21 | Arrow Fastener Company, Inc. | Shell-form transformer in a battery powered impact device |
| CN2870288Y (en) * | 2005-10-17 | 2007-02-14 | 郑州大学 | Back-excitation type current type high-voltage isolation driver |
| CN200956296Y (en) * | 2006-09-26 | 2007-10-03 | 台龙电子股份有限公司 | Double magnetic circuit ironcore |
-
2009
- 2009-03-27 CN CN 200910038269 patent/CN101593609B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103081043A (en) * | 2010-10-20 | 2013-05-01 | 雅达电子国际有限公司 | Multi-winding magnetic structures |
| CN113012903A (en) * | 2021-02-04 | 2021-06-22 | 中车株洲电力机车研究所有限公司 | Control framework suitable for iron core magnetic circuit multiplexing electrical system |
| CN113300609A (en) * | 2021-05-24 | 2021-08-24 | 广东东菱电源科技有限公司 | Single-IC-driven multi-path single-stage PFC parallel circuit and working method thereof |
| CN114944273A (en) * | 2022-06-17 | 2022-08-26 | 威海东兴电子有限公司 | Magnetic integrated resonance power transformer |
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