CN111555592A - Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter - Google Patents

Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter Download PDF

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Publication number
CN111555592A
CN111555592A CN202010476207.1A CN202010476207A CN111555592A CN 111555592 A CN111555592 A CN 111555592A CN 202010476207 A CN202010476207 A CN 202010476207A CN 111555592 A CN111555592 A CN 111555592A
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China
Prior art keywords
flexible strip
conductor film
strip integrated
integrated winding
magnetic core
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Application number
CN202010476207.1A
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Chinese (zh)
Inventor
邓成
谭浩
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Xiangtan University
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Xiangtan University
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Priority to CN202010476207.1A priority Critical patent/CN111555592A/en
Publication of CN111555592A publication Critical patent/CN111555592A/en
Withdrawn legal-status Critical Current

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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
    • 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
    • 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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • 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
    • H02M1/0064—Magnetic structures combining different functions, e.g. storage, filtering or transformation
    • 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
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/56—Power conversion systems, e.g. maximum power point trackers

Abstract

The invention discloses a passive element integration device for a photovoltaic-battery energy storage integrated soft switching power converter, which comprises four flexible strip integrated windings and three E-shaped magnetic cores; the first flexible strip integrated winding and the second flexible strip integrated winding are wound on the left side column and the right side column of the E-E type magnetic core respectively; and the third and fourth flexible strip integrated windings are wound on the left and right side columns of the E-shaped magnetic core respectively. The lumped parameter model formed by the four flexible strip integrated windings comprises two series resonance inductors, an energy storage inductor and a transformer. From the actual point of view, the invention invents four integrated windings created by adopting a flexible strip integration technology, and passive elements are integrated in an E-E-E type magnetic core structure, so that the volume of an electromagnetic power element is effectively reduced, and the power density of a circuit is improved.

Description

Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter
Technical Field
The invention discloses a passive element integration device for a photovoltaic-battery energy storage integrated soft switching power converter.
Background
The photovoltaic-battery energy storage integrated soft switching power converter is an important module which connects photovoltaic and battery energy storage to a load, has the function of energy storage, can further stabilize voltage, improve power and improve working frequency, and therefore, the power converter is widely valued and researched in the application fields of high power and photovoltaic energy storage.
The passive element integrated device for the photovoltaic-battery energy storage integrated soft switching power converter has the following advantages:
the stability efficiency is high, and the output stability is obviously improved;
the high power density and soft switch can greatly improve the working frequency, thereby obviously reducing the volume of the passive element.
Disclosure of Invention
The technical scheme for solving the problems is as follows: a passive component integrated device for a photovoltaic-battery energy storage integrated soft switching power converter is characterized in that: the flexible strip winding device comprises a first flexible strip integrated winding, a second flexible strip integrated winding, a third flexible strip integrated winding and a fourth flexible strip integrated winding, and a first E-shaped magnetic core, a second E-shaped magnetic core and a third E-shaped magnetic core. The first E-shaped magnetic core is located below the second E-shaped magnetic core and is arranged in opposite contact with the second E-shaped magnetic core, air gaps are arranged on left and right side columns of the two opposite E-shaped magnetic cores, the third E-shaped magnetic core is located above the second E-shaped magnetic core and is arranged in contact with the second E-shaped magnetic core in the same direction, and air gaps are arranged on the left and right side columns of the E-shaped magnetic core. The first and second flexible strip integrated windings are respectively wound on left and right side columns of the E-E type magnetic core, which are oppositely arranged on the first and second E type magnetic cores; and the third and fourth flexible strip integrated windings are wound on the left and right side columns of the third E-shaped magnetic core respectively. The first flexible strip integrated winding is sequentially arranged into a first insulating film, a first conductor film, a second insulating film and a second conductor film from inside to outside; the second flexible strip integrated winding is sequentially arranged into a third insulating film and a third conductor film from inside to outside; the third flexible strip integrated winding is sequentially arranged into a fourth insulating film and a fourth conductor film from inside to outside; the fourth flexible strip integrated winding is sequentially arranged into a fifth insulating film and a fifth conductor film from inside to outside.
The input end of a first conductor film of the first flexible strip integrated winding is connected with the anode of a first diode, and the output end of the first conductor film is connected with the output end of a first capacitor; and the input end of the second conductor film of the first flexible strip integrated winding is connected with the PV output end, and the output end of the second conductor film of the first flexible strip integrated winding is connected with the drain electrode of the first switching tube. And the input end of a third conductor film of the second flexible strip integrated winding is connected with the drain electrode of the first switching tube, and the output end of the third conductor film is connected with the source electrode of the second switching tube. And the input end of a fourth conductor film of the third flexible strip integrated winding is connected with the source electrode of the third switching tube, and the output end of the fourth conductor film is connected with the source electrode of the first switching tube. And the input end of a fifth conductor film of the fourth flexible strip integrated winding is connected with the source electrode of the first switching tube, and the output end of the fifth conductor film is connected with the anode of the second diode.
A first conductor film and a second conductor film of the first flexible strip integrated winding respectively form a secondary side and a primary side of the first transformer, a third conductor film of the second flexible strip integrated winding forms a first resonant inductor, and a fourth conductor film of the third flexible strip integrated winding forms a second resonant inductor; and the fifth conductor film of the fourth flexible strip integrated winding forms a first energy storage inductor.
The first flexible strip integrated winding forms a lumped parameter model which is a first transformer; the second flexible strip integrated winding forms a lumped parameter model which is a first series resonance inductor; the third flexible strip integrated winding forms a lumped parameter model which is a second resonance inductor; and the fourth flexible strip integrated winding forms a lumped parameter model which is a first energy storage inductor.
The invention has the beneficial effects that: the passive element integration device for the photovoltaic-battery energy storage integrated soft switching power converter is simple in structure and small in size, improves the space utilization rate of an inductance element, and aims to improve power density and reliability and safety of an integration unit in a power electronic device by adopting a flexible strip integration technology.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the explosive structure of the present invention.
Fig. 3 is a schematic diagram of the working structure of the present invention.
FIG. 4 is a schematic diagram of a lumped parameter model of the apparatus according to the present invention.
Detailed Description
The invention is further described below with reference to the figures and examples.
As shown in fig. 1-3, a passive component integrated device for a photovoltaic-battery energy storage integrated soft switching power converter comprises a first flexible strip integrated winding 4, a second flexible strip integrated winding 5, a third flexible strip integrated winding 6, a fourth flexible strip integrated winding 7, a first E-shaped magnetic core 1, a second E-shaped magnetic core 2 and a third E-shaped magnetic core 3; the first E-shaped magnetic core 1 is positioned below the second E-shaped magnetic core 2 and is in opposite contact with the second E-shaped magnetic core 2, and the third E-shaped magnetic core 3 is positioned above the second E-shaped magnetic core 2 and is in contact with the second E-shaped magnetic core 2 in the same direction; the first flexible strip integrated winding 4 and the second flexible strip integrated winding 5 are respectively wound on the left side column and the right side column of the E-E type magnetic core, which are oppositely arranged on the first E type magnetic core 1 and the second E type magnetic core 2; and the third flexible strip integrated winding 6 and the fourth flexible strip integrated winding 7 are respectively wound on the left side column and the right side column of the third E-shaped magnetic core 3. The first flexible strip integrated winding 4 is sequentially arranged into a first insulating film 8, a first conductor film 9, a second insulating film 10 and a second conductor film 11 from inside to outside; the second flexible strip integrated winding 5 is sequentially arranged into a third insulating film 12 and a third conductor film 13 from inside to outside; the third flexible strip integrated winding 6 is sequentially arranged into a fourth insulating film 14 and a fourth conductor film 15 from inside to outside; the fourth flexible strip integrated winding 7 is sequentially arranged into a fifth insulating film 16 and a fifth conductor film 17 from inside to outside.
The input end of the first conductor film 9 of the first flexible strip integrated winding 4 is connected with the anode 28 of the first diode 19, and the output end of the first conductor film is connected with the output end 29 of the first capacitor 21; the second conductor film 11 of the first flexible strip integrated winding 4 is connected at the input to the output 25 of the PV18 and at the output to the drain 26 of the first switching tube 20. The input end of the third conductor film 13 of the second flexible strip integrated winding 5 is connected to the drain electrode 26 of the first switching tube 20, and the output end thereof is connected to the source electrode 27 of the second switching tube 22. The input end of the fourth conductor film 15 of the third flexible strip integrated winding 6 is connected to the source electrode 30 of the third switching tube 23, and the output end thereof is connected to the source electrode 31 of the first switching tube 20. The fifth conductor film 17 of the fourth flexible strip integrated winding 7 has its input connected to the source 31 of the first switching tube 20 and its output connected to the anode 32 of the second diode 24.
As shown in fig. 3 to 4, the first conductor film 9 and the second conductor film 11 of the first flexible strip integrated winding 4 respectively form the secondary side and the primary side of the first transformer 33, the third conductor film 13 of the second flexible strip integrated winding 5 forms the first resonant inductor 34, and the fourth conductor film 15 of the third flexible strip integrated winding 6 forms the second resonant inductor 35; the fifth conductor film 17 of the fourth flexible strip integrated winding 7 forms a first energy storage inductor 36.
The first flexible strip integrated winding 4 forms a lumped parameter model as a first transformer 33; the second flexible strip integrated winding 5 forms a lumped parameter model as a first series resonant inductor 34; the third flexible strip integrated winding 6 forms a lumped parameter model as a second resonant inductor 35; the fourth flexible strip integrated winding 7 forms a lumped parameter model as the first energy storage inductor 36.

Claims (4)

1. A passive component integrated device for a photovoltaic-battery energy storage integrated soft switching power converter is characterized in that: the flexible strip winding device comprises a first flexible strip integrated winding, a second flexible strip integrated winding, a third flexible strip integrated winding and a fourth flexible strip integrated winding, and a first E-shaped magnetic core, a second E-shaped magnetic core and a third E-shaped magnetic core; the first E-shaped magnetic core is positioned below the second E-shaped magnetic core and is oppositely contacted with the second E-shaped magnetic core, air gaps are arranged on left and right side columns of the two opposite E-shaped magnetic cores, the third E-shaped magnetic core is positioned above the second E-shaped magnetic core and is contacted with the second E-shaped magnetic core in the same direction, and the left and right side columns of the E-shaped magnetic core are provided with air gaps; the first and second flexible strip integrated windings are respectively wound on the left and right side columns of the first and second E-shaped magnetic cores which are oppositely arranged; the third and fourth flexible strip integrated windings are respectively wound on the left and right side columns of the third E-shaped magnetic core; the first flexible strip integrated winding is sequentially arranged into a first insulating film, a first conductor film, a second insulating film and a second conductor film from inside to outside; the second flexible strip integrated winding is sequentially arranged into a third insulating film and a third conductor film from inside to outside; the third flexible strip integrated winding is sequentially arranged into a fourth insulating film and a fourth conductor film from inside to outside; the fourth flexible strip integrated winding is sequentially arranged into a fifth insulating film and a fifth conductor film from inside to outside.
2. The passive element integrated device of the photovoltaic-battery energy storage integrated soft switching power converter according to claim 1, wherein: the input end of a first conductor film of the first flexible strip integrated winding is connected with the anode of a first diode, and the output end of the first conductor film is connected with the output end of a first capacitor; the input end of a second conductor film of the first flexible strip integrated winding is connected with the PV output end, and the output end of the second conductor film of the first flexible strip integrated winding is connected with the drain electrode of the first switching tube; the input end of a third conductor film of the second flexible strip integrated winding is connected with the drain electrode of the first switching tube, and the output end of the third conductor film of the second flexible strip integrated winding is connected with the source electrode of the second switching tube; the input end of a fourth conductor film of the third flexible strip integrated winding is connected with the source electrode of a third switching tube, and the output end of the fourth conductor film is connected with the source electrode of the first switching tube; and the input end of a fifth conductor film of the fourth flexible strip integrated winding is connected with the source electrode of the first switching tube, and the output end of the fifth conductor film is connected with the anode of the second diode.
3. The passive component integration device for the photovoltaic-battery energy storage integrated soft-switching power converter according to claim 1, wherein: a first conductor film and a second conductor film of the first flexible strip integrated winding respectively form a secondary side and a primary side of the first transformer, a third conductor film of the second flexible strip integrated winding forms a first resonant inductor, and a fourth conductor film of the third flexible strip integrated winding forms a second resonant inductor; and the fifth conductor film of the fourth flexible strip integrated winding forms a first energy storage inductor.
4. The passive component integration device for the photovoltaic-battery energy storage integrated soft-switching power converter according to claim 1, wherein: the first flexible strip integrated winding forms a lumped parameter model which is a first transformer; the second flexible strip integrated winding forms a lumped parameter model which is a first series resonance inductor; the third flexible strip integrated winding forms a lumped parameter model which is a second resonance inductor; and the fourth flexible strip integrated winding forms a lumped parameter model which is a first energy storage inductor.
CN202010476207.1A 2020-05-29 2020-05-29 Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter Withdrawn CN111555592A (en)

Priority Applications (1)

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CN202010476207.1A CN111555592A (en) 2020-05-29 2020-05-29 Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter

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Application Number Priority Date Filing Date Title
CN202010476207.1A CN111555592A (en) 2020-05-29 2020-05-29 Passive element integration device for photovoltaic-battery energy storage integrated soft switching power converter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112164560A (en) * 2020-09-03 2021-01-01 湘潭大学 Passive element integration device for soft-switching full-bridge converter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112164560A (en) * 2020-09-03 2021-01-01 湘潭大学 Passive element integration device for soft-switching full-bridge converter

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Application publication date: 20200818

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