CN111010044A - Magnetic integrated double-active-bridge converter - Google Patents
Magnetic integrated double-active-bridge converter Download PDFInfo
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- CN111010044A CN111010044A CN201911374360.7A CN201911374360A CN111010044A CN 111010044 A CN111010044 A CN 111010044A CN 201911374360 A CN201911374360 A CN 201911374360A CN 111010044 A CN111010044 A CN 111010044A
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- 239000003990 capacitor Substances 0.000 claims abstract description 21
- 230000010363 phase shift Effects 0.000 claims abstract description 7
- 238000004804 winding Methods 0.000 claims description 123
- 230000009977 dual effect Effects 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 25
- 230000002457 bidirectional effect Effects 0.000 abstract description 4
- 238000004146 energy storage Methods 0.000 abstract 1
- 230000004907 flux Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 6
- 229920006395 saturated elastomer Polymers 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 229910002601 GaN Inorganic materials 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of DC power input into DC power output
- H02M3/22—Conversion of DC power input into DC power output with intermediate conversion into AC
- H02M3/24—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters
- H02M3/28—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC
- H02M3/325—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/3353—Conversion of DC power input into DC power output with intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate AC using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/24—Magnetic cores
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0048—Circuits or arrangements for reducing losses
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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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Dc-Dc Converters (AREA)
Abstract
The invention discloses a magnetic integrated double-active-bridge converter. The magnetic integrated circuit is characterized by comprising a primary side full bridge, a secondary side full bridge, a magnetic integrated structure, a primary side direct current power supply, a secondary side direct current power supply, an input filter capacitor and an output filter capacitor; when energy is transmitted in the forward direction, the primary side full bridge works in an inversion state, the secondary side full bridge works in a rectification state, when the energy is transmitted in the forward direction, the secondary side full bridge works in the inversion state, and the primary side full bridge works in the rectification state. The magnetic integration structure integrates two functions of an energy storage inductor and a transformer in a magnetic core. The whole converter only contains one magnetic element, so that the volume of the magnetic element is greatly reduced, and the power density is further improved. The invention can realize high-power, small-volume and high-efficiency bidirectional energy transfer under phase-shift control or asymmetric PWM control.
Description
Technical Field
The invention relates to a power electronic magnetic integration technology, in particular to a magnetic integration double-active-bridge converter.
Background
In recent years, bidirectional DC/DC converters have been widely used in various fields of production and life, and with the use of third-generation semiconductor devices such as silicon carbide and gallium nitride, converters have been developed to have high frequency and high power density. However, magnetic components such as transformers and inductors typically weigh 30% to 40% and have a volume of about 20% to 30% of the converter, and thus become the main factor limiting the power density boost of the converter. Therefore, the excessive magnetic elements will increase the size and weight of the converter, increase the design cost, and affect the power density and efficiency of the power supply. With the introduction of magnetic integration technology, the number of magnetic elements has decreased in volume. In the prior art, most of the non-isolated converters are magnetically integrated, part of the non-isolated converters realize the magnetic integration of the energy unidirectional transmission of the isolated converters, and the energy bidirectional transmission magnetic integration of the isolated converters is less. In the actual design of the prior art, the magnetic integrated magnetic core side column of the isolated converter inductor and the transformer is easy to saturate.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a magnetic integration double-active-bridge converter, so as to realize the magnetic integration of the energy bidirectional transmission of the double-active-bridge converter, reduce the saturation of a magnetic core side column after the magnetic integration and further reduce the size of the magnetic core after the magnetic integration.
The invention provides a magnetic integrated double-active full converter, which comprises a primary side full bridge, a secondary side full bridge, a magnetic integrated structure, a primary side direct current power supply, a secondary side direct current power supply, a primary side input filter capacitor and a secondary side output filter capacitor, wherein the primary side full bridge is connected with the secondary side output filter capacitor; the primary side full bridge comprises a switching device S1Switching device S2Switching device S3Switching device S4Switching device S1Source electrode of the same switching device S2Is connected to the drain of the switching device S3Source electrode of the same switching device S4Is connected to the drain of the switching device S1Is connected to the switching device S3Is connected to the drain of the switching device S2Source electrode of the same switching device S4The source electrodes of the first and second transistors are connected; the secondary side full bridge comprises a switching device Q1Switching device Q2Switching device Q3Switching device Q4Switching device Q1Source electrode of same switching device Q2Is connected to the drain of the switching device Q3OfPolar homoswitch device Q4Is connected to the drain of the switching device Q1Drain electrode of the same-switch device Q3Is connected to the drain of the switching device Q2Source electrode of same switching device Q4The source electrodes of the first and second transistors are connected; the input filter capacitor is a switch device S of a full bridge on the same primary side1Drain electrode and switching device S3Drain and switching device S2Source, switching device S4The source electrodes are connected; the output filter capacitor is a full-bridge switching device Q with the same secondary side1Drain electrode, switching device Q3Drain and switching device Q2Source, switching device Q4The source electrodes are connected; the primary side direct current power supply is connected with the input filter capacitor; the secondary side direct current power supply is connected with the output filter capacitor; the port 1 of the magnetic integrated structure is connected with a primary side full bridge port A, the port 2 of the magnetic integrated structure is connected with a primary side full bridge port B, the port 3 of the magnetic integrated structure is connected with a primary side full bridge port C, and the port 4 of the magnetic integrated structure is connected with a primary side full bridge port D.
Optionally, the magnetic integrated structure further includes an EE/EI magnetic core or a planar magnetic core, an inductance winding, a primary side first winding, a primary side second winding, a secondary side first winding, and a secondary side second winding; the inductance winding is wound on the magnetic core side post II, the primary side first winding is wound on the magnetic core side post III, the primary side second winding is wound on the magnetic core middle post I, the secondary side first winding is wound on the magnetic core side post III, and the secondary side second winding is wound on the magnetic core middle post I; the homonymous end of the inductance winding is used as a port 1 of the magnetic integrated structure, the synonym end of the inductance winding is connected with the homonymous end of the primary side first winding, the synonym end of the primary side first winding is connected with the homonymous end of the primary side second winding, the synonym end of the primary side first winding is used as a port 2 of the magnetic integrated structure, the homonymous end of the secondary side first winding is used as a port 3 of the magnetic integrated structure, the synonym end of the secondary side first winding is connected with the homonymous end of the secondary side second winding, and the synonym end of the secondary side second winding is used as a port 4 of the magnetic integrated structure; and air gaps are formed in the three magnetic columns of the EE/EI magnetic core or the planar magnetic core.
Optionally, the magnetic integrated structure further comprises a UIU magnetic core, a primary winding, a secondary winding, an inductor first winding, and an inductor second winding; a primary side winding is wound on a central column I of the magnetic core, a secondary side winding is wound on the central column I of the magnetic core, a first inductance winding is wound on a side column II of the magnetic core, and a second inductance winding is wound on a side column III of the magnetic core; the homonymous end of the first winding of the inductor is used as a port 1 of the magnetic integrated structure, the synonym end of the first winding of the inductor is connected with the homonymous end of the second winding of the inductor, the homonymous end of the primary winding is connected with the synonym end of the second winding of the inductor, the synonym end of the primary winding is used as a port 2 of the magnetic integrated structure, the homonymous end of the secondary winding is used as a port 3 of the magnetic integrated structure, and the synonym end of the secondary winding is used as a port 4 of the magnetic integrated structure; and air gaps are formed between the magnetic column I and the magnetic column II of the UIU magnetic core and between the magnetic column I and the magnetic column III.
Optionally, the primary full bridge and the secondary full bridge adopt PWM phase shift control, asymmetric PWM control, phase shift frequency conversion control, and the like.
The invention has the beneficial effects that: the invention improves the existing structure, provides a new magnetic integration structure, and provides a four-port structure which can adopt the structure shown in figure 2 and the structure shown in figure 3 to respectively solve the problem that the side column III of the magnetic core is saturated after the magnetic integration of the inductor and the transformer and the two side columns of the magnetic core are saturated after the magnetic integration of the inductor and the transformer, so as to facilitate the actual design and application. According to the invention, through reasonable design of the number of turns of the low-frequency inductor on the side column III and the center column I of the magnetic core, the magnetic fluxes generated by the primary and secondary side first windings and the primary and secondary side second windings counteract the magnetic flux of the inductor on the side column II of the magnetic core, and the operation of the transformer does not influence the operation of the inductor. The decoupling integration of the inductor and the transformer is realized, the magnetic flux generated by the center pillar after the magnetic integration is maximum, but the saturation is reduced because the center pillar of the magnetic core is wider than the side pillars. The invention realizes the decoupling integration of the inductor and the transformer, the magnetic flux generated by the side column III after the magnetic integration is the largest, but the saturation can be reduced because the UIU-shaped magnetic core side column III is wider than the EE/EI-shaped magnetic core side column III.
Drawings
FIG. 1 is a schematic diagram of a magnetically integrated dual active bridge converter;
fig. 2 is a schematic diagram of the structure of the present invention in which an inductor is disposed on the left leg and a transformer is disposed on the center and right legs using only one EE/EI core.
Fig. 3 is a schematic diagram of the structure of the present invention using only one UIU core to place the inductor in the side leg and the transformer in the center leg.
Detailed Description
Fig. 1 is a schematic diagram of a magnetic integrated dual-active bridge converter according to an embodiment of the present invention, where the magnetic integrated dual-active bridge converter according to the embodiment of the present invention includes a primary-side full bridge, a secondary-side full bridge, a magnetic integrated structure, a primary-side dc power supply, a secondary-side dc power supply, an input filter capacitor, and an output filter capacitor; the primary side full bridge comprises a switching device S1Switching device S2Switching device S3Switching device S4Switching device S1Source electrode of the same switching device S2Is connected to the drain of the switching device S3Source electrode of the same switching device S4Is connected to the drain of the switching device S1Is connected to the switching device S3Is connected to the drain of the switching device S2Source electrode of the same switching device S4The source electrodes of the first and second transistors are connected; the secondary side full bridge comprises a switching device Q1Switching device Q2Switching device Q3Switching device Q4Switching device Q1Source electrode of same switching device Q2Is connected to the drain of the switching device Q3Source electrode of same switching device Q4Is connected to the drain of the switching device Q1Drain electrode of the same-switch device Q3Is connected to the drain of the switching device Q2Source electrode of same switching device Q4The source electrodes of the first and second transistors are connected; the input filter capacitor is a switch device S of a full bridge on the same primary side1Drain electrode and switching device S3Drain and switching device S2Source, switching device S4The source electrodes are connected; the output filter capacitor is a full-bridge switching device Q with the same secondary side1Drain electrode, switching device Q3Drain and switching device Q2Source, switching device Q4The source electrodes are connected; the primary side direct current power supply is connected with the input filter capacitor; the secondary side direct current power supply is connected with the output filter capacitor; the port 1 of the magnetic integrated structure is connected with the port A of the full bridge on the primary side, and the port 2 of the magnetic integrated structure is connected with the port A of the full bridge on the primary sideThe bridge port B is connected, the magnetic integrated structure port 3 is connected with the primary side full bridge port C, and the magnetic integrated structure port 4 is connected with the primary side full bridge port D. The magnetic integration structure is a four-port structure, can adopt the structural form shown in fig. 2 and also can adopt the structural form shown in fig. 3, and respectively solves the problem that the side columns III of the magnetic core after the magnetic integration of the inductor and the transformer are saturated and the two side columns of the magnetic core after the magnetic integration of the inductor and the transformer are saturated, so that the magnetic integration structure is convenient for practical design and application. The primary side full bridge and the secondary side full bridge of the converter adopt PWM phase-shift control, asymmetric PWM control, phase-shift frequency conversion control and the like. When energy is transmitted in the forward direction, the primary side full bridge works in an inversion state, the secondary side full bridge works in a rectification state, when the energy is transmitted in the forward direction, the secondary side full bridge works in the inversion state, and the primary side full bridge works in the rectification state.
Fig. 2 is a schematic diagram of the structure of the present invention in which an inductor is disposed on the left leg and a transformer is disposed on the center and right legs using only one EE/EI core. The magnetic integrated structure also comprises an EE/EI magnetic core or a plane magnetic core, an inductance winding, a primary side first winding, a primary side second winding, a secondary side first winding and a secondary side second winding; the inductance winding is wound on the magnetic core side post II, the primary side first winding is wound on the magnetic core side post III, the primary side second winding is wound on the magnetic core middle post I, the secondary side first winding is wound on the magnetic core side post III, and the secondary side second winding is wound on the magnetic core middle post I; the homonymous end of the inductance winding is used as a port 1 of the magnetic integrated structure, the synonym end of the inductance winding is connected with the homonymous end of the primary side first winding, the synonym end of the primary side first winding is connected with the homonymous end of the primary side second winding, the synonym end of the primary side first winding is used as a port 2 of the magnetic integrated structure, the homonymous end of the secondary side first winding is used as a port 3 of the magnetic integrated structure, the synonym end of the secondary side first winding is connected with the homonymous end of the secondary side second winding, and the synonym end of the secondary side second winding is used as a port 4 of the magnetic integrated structure; and air gaps are formed in the three magnetic columns of the EE/EI magnetic core or the planar magnetic core.
The magnetic flux generated by the inductor of the magnetic integrated structure reduces the magnetic flux of the primary and secondary side first windings on the side column III of the magnetic core, the magnetic flux generated by the inductor enhances the magnetic flux of the primary and secondary side second windings on the side column II of the magnetic core, and the influence of the operation of the inductor on the operation of the transformer is mutually offset; through the reasonable design of the number of turns of the low-frequency inductor on the magnetic core side column III and the magnetic core center column I, the magnetic fluxes generated by the primary and secondary side first windings and the primary and secondary side second windings counteract the magnetic flux of the inductor on the magnetic core side column II, and the operation of the transformer does not influence the operation of the inductor. The decoupling integration of the inductor and the transformer is realized, the magnetic flux generated by the center pillar after the magnetic integration is maximum, but the saturation is reduced because the center pillar of the magnetic core is wider than the side pillars.
Fig. 3 is a schematic diagram of the structure of the present invention using only one UIU core to place the inductor in the side leg and the transformer in the center leg. The magnetic integrated structure also comprises a UIU magnetic core, a primary winding, a secondary winding, an inductor first winding and an inductor second winding; a primary side winding is wound on a central column I of the magnetic core, a secondary side winding is wound on the central column I of the magnetic core, a first inductance winding is wound on a side column II of the magnetic core, and a second inductance winding is wound on a side column III of the magnetic core; the homonymous end of the first winding of the inductor is used as a port 1 of the magnetic integrated structure, the synonym end of the first winding of the inductor is connected with the homonymous end of the second winding of the inductor, the homonymous end of the primary winding is connected with the synonym end of the second winding of the inductor, the synonym end of the primary winding is used as a port 2 of the magnetic integrated structure, the homonymous end of the secondary winding is used as a port 3 of the magnetic integrated structure, and the synonym end of the secondary winding is used as a port 4 of the magnetic integrated structure; and air gaps are formed between the magnetic column I and the magnetic column II of the UIU magnetic core and between the magnetic column I and the magnetic column III.
Magnetic fluxes generated by the first inductance winding and the second inductance winding on the two side columns of the magnetic integrated structure are mutually offset in the middle column of the magnetic core, and the operation of the inductance does not influence the operation of the transformer; the magnetic flux of the first winding of the transformer winding on the magnetic core side column II is reduced, the magnetic flux of the second winding of the transformer winding on the magnetic core side column III is enhanced, and the influence of the operation of the transformer winding on the operation of the inductor is mutually offset. The decoupling integration of the inductor and the transformer is realized, the magnetic flux generated by the side column III after the magnetic integration is the largest, but the saturation is reduced because the UIU-shaped magnetic core side column III is wider than the EE/EI-shaped magnetic core side column III.
The magnetic integrated structure is applied to a dual active bridge converter, but is not limited thereto. All the transducers and magnetic integrated structures proposed by the present invention are protected in their natural deduction and variation combinations.
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. While the invention has been described with respect to the above embodiments, it will be understood by those skilled in the art that the invention is not limited to the above embodiments, which are described in the specification and illustrated only to illustrate the principles of the invention, but that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A magnetic integrated double-active-bridge converter is characterized by comprising a primary full bridge H1, a secondary full bridge H2, a magnetic integrated structure and a primary direct-current power supply V1Secondary side dc power supply V2An input filter capacitor C1An output filter capacitor C2(ii) a The primary side full bridge H1 is composed of a switching device S1Switching device S2Switching device S3Switching device S4Composition of, the switching device S1Source electrode of the same switching device S2Is connected to the drain of the switching device S3Source electrode of the same switching device S4Is connected to the drain of the switching device S1Is connected to the switching device S3Is connected to the drain of the switching device S2Source electrode of the same switching device S4The source electrodes of the first and second transistors are connected; the secondary side full bridge H2 is composed of a switching device Q1Switching device Q2Switching device Q3Switching device Q4Composition of, the switching device Q1Source electrode of same switching device Q2Is connected to the drain of the switching device Q3Source electrode of same switching device Q4Is connected to the drain of the switching device Q1Drain electrode of the same-switch device Q3Is connected to the drain of the switching device Q2Source electrode of same switching device Q4The source electrodes of the first and second transistors are connected; the input filter capacitor C1Switching device of same-primary-side full bridge H1Part S1Drain electrode and switching device S3Drain and switching device S2Source, switching device S4The source electrodes are connected; the output filter capacitor C2Switching device Q of same-side full bridge H21Drain electrode, switching device Q3Drain and switching device Q2Source, switching device Q4The source electrodes are connected; the primary side direct current power supply V1Same-input filter capacitor C1Connecting; the secondary side DC power supply V2Same-output filter capacitor C2Connecting; the port of the magnetic integrated structure is connected with a port A of a primary side full bridge H1, the port of the magnetic integrated structure is connected with a port B of a primary side full bridge H1, the port of the magnetic integrated structure is connected with a port C of a primary side full bridge H1, and the port of the magnetic integrated structure is connected with a port D of a primary side full bridge H1.
2. A magnetically integrated dual active bridge converter according to claim 1, wherein said magnetically integrated structure is formed by EE/EI magnetic core or planar magnetic core, inductive winding L, primary side primary winding NP1Primary side secondary winding NP2Secondary side first winding NS1Secondary side second winding NS2Composition is carried out; the inductance winding L is wound on a magnetic core side post II, and the primary side first winding NP1Wound on a side column III of the magnetic core, and a secondary winding N of the primary sideP2Wound on a center post I of the magnetic core, and a first winding N on the secondary sideS1Wound on the side column III of the magnetic core, and secondary side secondary winding NS2Winding on the center pillar I of the magnetic core; the homonymous end of the inductance winding L is used as a port 1 of the magnetic integrated structure, and the heteronymous end of the inductance winding L is identical to the primary side first winding NP1Are connected with the same name end of the primary side first winding NP1Second winding N with different name end and same primary sideP2Are connected with the same name end of the primary side first winding NP1The synonym end of the magnetic integrated structure is used as a port 2 of the magnetic integrated structure, and the secondary side first winding NS1The same name end of the magnetic integrated structure is used as a port 3 of the magnetic integrated structure, and the secondary side first winding NS1Second winding N with different name end and same secondary sideS2Are connected with the same name end, and the secondary side second winding NS2The different name end is used as a magnetic integrated structurePort 4; and air gaps are formed in the three magnetic columns of the EE/EI magnetic core or the planar magnetic core.
3. A magnetically integrated dual active bridge converter according to claim 1, wherein said magnetically integrated structure is formed by a UIU core, a primary winding NPSecondary winding NSFirst winding L of inductor1Second winding L of inductor2Composition is carried out; the primary winding NPWound on the center post I of the magnetic core, and the secondary side winding NSWound on a center pillar I of the magnetic core, and a first winding L of the inductor1Wound on the side post II of the magnetic core, and a second winding L of the inductor2Winding on the magnetic core side column III; wherein the first winding L of the inductor1The end with the same name is used as a port 1 of the magnetic integrated structure, and the first winding L of the inductor1Second winding L with different name terminals and same inductance2The same name end is connected, and the primary winding NPSecond winding L with same name end and same inductance2Different name ends are connected, and the primary winding NPThe different name end is used as a magnetic integrated structure port 2, and the secondary winding NSThe homonymous terminal is used as a port 3 of the magnetic integrated structure and a secondary winding NSThe synonym end is used as a magnetic integrated structure port 4; and air gaps are formed between the magnetic column I and the magnetic column II of the UIU magnetic core and between the magnetic column I and the magnetic column III.
4. A magnetically integrated dual-active bridge converter according to claim 1 or 3, wherein said primary full-bridge H1 and secondary full-bridge H2 are PWM phase-shift controlled, asymmetric PWM controlled, phase-shift frequency-conversion controlled.
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| CN201911374360.7A CN111010044B (en) | 2019-12-27 | 2019-12-27 | Magnetically integrated double-active-bridge converter |
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| CN111010044B CN111010044B (en) | 2024-04-19 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112687454A (en) * | 2020-12-21 | 2021-04-20 | 中南大学 | Transformer magnetic integration structure integrating leakage inductance and excitation inductance and integration method thereof |
| CN112737348A (en) * | 2021-01-22 | 2021-04-30 | 天津工业大学 | Magnetic integration three-port DC-DC converter |
| CN115001285A (en) * | 2022-08-01 | 2022-09-02 | 银河航天(西安)科技有限公司 | Power conversion circuit and power conversion system |
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| CN112687454A (en) * | 2020-12-21 | 2021-04-20 | 中南大学 | Transformer magnetic integration structure integrating leakage inductance and excitation inductance and integration method thereof |
| CN112687454B (en) * | 2020-12-21 | 2022-08-09 | 中南大学 | Transformer magnetic integration structure integrating leakage inductance and excitation inductance and integration method thereof |
| CN112737348A (en) * | 2021-01-22 | 2021-04-30 | 天津工业大学 | Magnetic integration three-port DC-DC converter |
| CN112737348B (en) * | 2021-01-22 | 2024-04-19 | 天津工业大学 | Magnetic integration three-port DC-DC converter |
| CN115001285A (en) * | 2022-08-01 | 2022-09-02 | 银河航天(西安)科技有限公司 | Power conversion circuit and power conversion system |
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