CN111092494A - Magnetic coupling wireless power transmission device for converter valve - Google Patents

Magnetic coupling wireless power transmission device for converter valve Download PDF

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Publication number
CN111092494A
CN111092494A CN202010020314.3A CN202010020314A CN111092494A CN 111092494 A CN111092494 A CN 111092494A CN 202010020314 A CN202010020314 A CN 202010020314A CN 111092494 A CN111092494 A CN 111092494A
Authority
CN
China
Prior art keywords
coil
wireless power
plate
bottom plate
top plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010020314.3A
Other languages
Chinese (zh)
Inventor
石秋雨
周哲
苏铁山
李芳义
邓占锋
赵国亮
李卫国
刘海军
袁婷婷
康伟
乔光尧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Original Assignee
State Grid Corp of China SGCC
State Grid Zhejiang Electric Power Co Ltd
Global Energy Interconnection Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, State Grid Zhejiang Electric Power Co Ltd, Global Energy Interconnection Research Institute filed Critical State Grid Corp of China SGCC
Priority to CN202010020314.3A priority Critical patent/CN111092494A/en
Publication of CN111092494A publication Critical patent/CN111092494A/en
Pending legal-status Critical Current

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    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • 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
    • H02J3/00—Circuit arrangements for ac mains or ac distribution networks
    • H02J3/36—Arrangements for transfer of electric power between ac networks via a high-tension dc link
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • 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
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
    • 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
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Coils Of Transformers For General Uses (AREA)

Abstract

The invention provides a magnetic coupling wireless power transmission device for a converter valve, which comprises a top plate (11), a bottom plate (12), and an energy transmission coil (15) and a driving supporting plate (2) which are arranged between the top plate (11) and the bottom plate (12); the energy-transmitting coil (15) is fixed on the driving supporting plate (2); the device is connected with the converter valve (10) through the top plate (11) and the bottom plate (12), so that the electrical isolation can be realized, the whole volume is small, and the insulation level is high; the coil shell is made of organic glass or epoxy resin, so that the visibility and the ornamental performance of the coil are guaranteed, the integral insulation can be realized, the pull rod and the fastening nut can be made of metal materials or insulating materials, and the insulation level is high; the bolt-free and outer-side operation and fixation are realized, and the high-efficiency installation and debugging can be realized; the coil area can be effectively reduced, and the overall size of the magnetic coupling wireless power transmission device is further reduced.

Description

Magnetic coupling wireless power transmission device for converter valve
Technical Field
The invention relates to the technical field of converter valves, in particular to a magnetic coupling wireless power transmission device for a converter valve.
Background
With the improvement of the Voltage class and the transmission capability of a High Voltage Direct Current (HVDC) system, power electronic equipment such as a converter valve is widely applied, and a crimping type IGBT device is gradually applied to a flexible dc converter valve.
In the prior art, the drivers in the converter valves are generally powered in the following manner: (1) the high voltage of the converter valve is inverted into low voltage through the high-voltage self-energy-taking device, so that power supply of the driver is realized; (2) the driver is powered by high voltage through a high voltage resistant cable; (3) and the transformer with the iron core is adopted to realize the isolated power supply and the energy transmission of the driver.
But has the following disadvantages: the high-potential self-energy-taking device cannot realize the electrical isolation between the trigger device and the converter valve; the power transmission of the high-voltage-resistant cable is limited by high-voltage differential pressure and an insulation technology, and the volume of the power supply device is large; a plurality of transformers with iron cores are connected in a cascade mode, and the insulation level is low.
Disclosure of Invention
In order to overcome the defects that the prior art cannot realize electric isolation, the size of a power supply device is large, and the insulation level is low, the invention provides a magnetic coupling wireless power transmission device for a converter valve, which comprises a top plate (11), a bottom plate (12), and an energy transmission coil (15) and a driving supporting plate (2) which are arranged between the top plate (11) and the bottom plate (12); the energy-transmitting coil (15) is fixed on the driving supporting plate (2); the device is connected with the converter valve (10) through the top plate (11) and the bottom plate (12), can realize electrical isolation with the converter valve, and has small integral volume and high insulation level.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
the invention provides a magnetic coupling wireless power transmission device for a converter valve, which comprises a top plate (11), a bottom plate (12), and an energy transmission coil (15) and a driving supporting plate (2) which are arranged between the top plate (11) and the bottom plate (12);
the energy sending coil (15) is fixed on the driving supporting plate (2);
the device is connected with the converter valve (10) through a top plate (11) and a bottom plate (12).
The energy supply coils (15) and the driving support plates (2) are multiple, and each driving support plate (2) is provided with one energy supply coil (15);
the device also comprises a plurality of pull rods (13), wherein each pull rod (13) sequentially penetrates through the top plate (11), the plurality of driving supporting plates (2) and the bottom plate (12) from top to bottom, and the top plate (11), the plurality of driving supporting plates (2) and the bottom plate (12) are fixed.
The pull rod (13) is of a full-thread structure;
all the driving supporting plates (2) are fixed with the pull rod (13) through fastening nuts (14).
The top plate (11) and the bottom plate (12) are made of metal materials, and the pull rod (13) and the fastening nut (14) are made of metal materials or insulating materials;
the insulating material is epoxy resin.
The energy sending coil (15) comprises a first coil (6), a second coil (16) and a ferrite (7);
the ferrite (7) is located between the first coil (6) and the second coil (16).
The first coil (6) and the second coil (16) each comprise a coil housing (3) and turns located inside the coil housing;
the coil shell (3) is provided with a wire turn groove (9), and the wire turn is wound on the wire turn groove (9).
And the coil shell (3) is provided with heat dissipation holes (8).
The coil shell (3) is made of organic glass or epoxy resin.
And the overline positions among the wire turns are fixed by adopting an insulating tape in an auxiliary way. The device further comprises a driver (4);
the driver (4) is fixed on the driving support plate (2) through a bolt pin assembly (5), and the energy transmitting coil (15) is fixed on the driving support plate (2) through a fastening bolt (17) and the bolt pin assembly (5).
Compared with the closest prior art, the technical scheme provided by the invention has the following beneficial effects:
the invention provides a magnetic coupling wireless power transmission device for a converter valve, which comprises a top plate (11), a bottom plate (12), and an energy transmission coil (15) and a driving supporting plate (2) which are arranged between the top plate (11) and the bottom plate (12); the energy-transmitting coil (15) is fixed on the driving supporting plate (2); the device is connected with the converter valve (10) through a top plate (11) and a bottom plate (12), can realize electrical isolation with the converter valve, and has small integral volume and high insulation level;
according to the technical scheme provided by the invention, one energy transmitting coil is fixed on each driving supporting plate, and different energy transmitting coils are not in contact with each other, so that electrical isolation is realized;
according to the invention, the coil shell is made of organic glass or epoxy resin, so that the visibility and the ornamental property of the coil are ensured, the integral insulation can be realized, the pull rod and the fastening nut can be made of metal materials or insulating materials, and the insulation level is high;
the specific number of the wire turns positioned in the coil shell in the technical scheme provided by the invention can be independently selected according to the matched structural environment, so that the flexibility is realized;
the driving supporting plates are fixed on the pull rods through the fastening nuts, so that the adjustment of the space between the driving supporting plates and the horizontal height of the driving supporting plates is facilitated, and the cascade connection of the energy transmitting coils layer by layer is realized;
the driver (4) is fixed on the driving supporting plate (2) through the bolt pin assembly (5), the energy transmission coil (15) is fixed on the driving supporting plate (2) through the fastening bolt (17) and the bolt pin assembly (5), so that bolt-free and outside operation fixing is realized, and efficient installation and debugging can be realized;
the coil shell is provided with the heat dissipation holes and the wire turn grooves, the heat dissipation holes can ensure that heat escapes in time when the energy supply coil works, the wire turn grooves can ensure the consistency of each coil structure in the winding process, and the wire turn grooves are also an auxiliary winding mode;
the two coils in the energy transmitting coil are respectively used as an electric energy receiving part and an electric energy transmitting part, each part is formed by winding wire turns, the energy transmission density of the unit area of the coupling coil can be improved by increasing the number of the wire turns, and the transmission distance between the energy transmitting coils can be shortened to a certain extent by utilizing the height space under the condition that the height of each layer of supporting plate is limited, so that the area of the coils can be effectively reduced by transmitting the electric energy with the same power, and the integral volume of the magnetic coupling wireless electric energy transmission device is further reduced.
Drawings
Fig. 1 is a structural view of a magnetically coupled wireless power transmission apparatus for a converter valve in an embodiment of the present invention;
FIG. 2 is a schematic view of a drive plate in an embodiment of the invention;
FIG. 3 is a schematic view of heat dissipation holes on a coil housing according to an embodiment of the present invention;
FIG. 4 is a side view of a power transmitting coil in an embodiment of the present invention;
FIG. 5 is a schematic view of a turn slot on a coil housing in an embodiment of the invention;
in the figure, 1-magnetic coupling wireless power transmission device; 2-driving the supporting plate; 3-a coil housing; 4-a driver; 5-a latch assembly; 6-a first coil; 7-ferrite; 8-heat dissipation holes; 9-wire turn slots; 10-a converter valve; 11-a top plate; 12-a base plate; 13-a pull rod; 14-a fastening nut; 15-energy-supply coil; 16-second coil, 17-fastening bolt.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The embodiment of the invention provides a magnetic coupling wireless power transmission device for a converter valve, as shown in fig. 1, the upper end of a converter valve 10 is a positive high-voltage end, the lower end of the converter valve is a negative high-voltage end, and the middle position of the converter valve is a low-voltage ground potential;
the energy-transmitting coil 15 is fixed on the driving supporting plate 2;
the device is connected with the converter valve 10 through a top plate 11 and a bottom plate 12, the top plate 11 and the bottom plate 12 are both connected with the converter valve 10 through bolts, and the fixation of the two ends of the whole frame is achieved.
In embodiment 1 of the invention, four pull rods 13 are selected, which play a role in supporting and fixing each layer of driving supporting plate, thereby ensuring the stability of the whole frame.
The energy supply coils 15 and the driving supporting plates 2 are multiple, and each driving supporting plate 2 is provided with one energy supply coil 15; the device also comprises a plurality of pull rods 13, wherein each pull rod 13 sequentially penetrates through the top plate 11, the plurality of driving supporting plates 2 and the bottom plate 12 from top to bottom, and fixes the top plate 11, the plurality of driving supporting plates 2 and the bottom plate 12.
The pull rod 13 is of a full-thread structure, the driving support plate 2 is fixed with the pull rod 13 through the fastening nuts 14, and each driving support plate 12 is fixed through the upper fastening nut 14 and the lower fastening nut 14 in the embodiment of the invention, so that the adjustment of the distance between the driving support plates and the horizontal height of the driving support plates is facilitated, and the cascade connection of energy-transmitting coils layer by layer is realized.
The top plate 11 and the bottom plate 12 are made of metal, and the pull rod 13 and the fastening nut 14 are made of metal or insulating materials;
the insulating material is epoxy resin.
As shown in fig. 4, the power transmission coil 15 includes a first coil 6, a second coil 16, and a ferrite 7;
the ferrite 7 is located between the first coil 6 and the second coil 16.
The first coil 6 and the second coil 16 each comprise a coil housing 3 and turns located inside the coil housing.
As shown in fig. 5, the coil case 3 is provided with a turn groove 9, and turns are wound around the turn groove 9.
As shown in fig. 3, heat dissipation holes 8 are formed in the coil housing 3, the heat dissipation holes 8 can ensure that heat escapes in time when the energy supply coil works, wire turn grooves 9 can ensure the consistency of each coil structure in the winding process, and the wire turn grooves are also an auxiliary winding mode, and threading holes at special positions assist in fixing and passing wires among wire turn layers, so that the winding efficiency of the coil is improved;
the coil housing 3 is made of organic glass or epoxy resin. The overline position between the wire turns is fixed by adopting an insulating tape to assist and strengthen the local insulation between layers, and the energy transmission coil is insulated and protected from the whole to the local.
The device provided by the embodiment 1 of the invention further comprises a driver 4, wherein the driver 4 is used for supplying power to the converter valve 10;
as shown in fig. 2, the driver 4 is fixed on the driving support plate 2 through the latch assembly 5, and the energy transmission coil 15 is fixed on the driving support plate 2 through the fastening bolt 17 and the latch assembly 5, so that bolt-free and outside operation fixing is realized, and efficient installation and debugging can be realized.
The magnetic coupling wireless electric energy transmission device provided by the embodiment of the invention realizes electric energy transmission in a coil cascade mode, not only can realize electric energy transmission from the middle to two ends, but also realize electric energy transmission from the top end to the bottom end or from the bottom end to the top end in the same direction, the electric energy transmission direction is not limited, the electric energy transmission from the middle to two ends can ensure that the integral height of the converter valve is not changed, and the insulation problem that the initial energy transmission low potential and the high potential at two ends of the valve string need to be processed can be avoided;
the magnetic coupling wireless power transmission device provided by the embodiment of the invention has a wide application range, is not only suitable for a series-type converter valve structure, but also suitable for other forms of converter valve structures, and is suitable for 10kV or even higher voltage levels; the device also has the advantages of independence on transmission media, safety, flexibility and the like, and can transfer energy in a short distance range.
Finally, it should be noted that: the above embodiments are only intended to illustrate the technical solution of the present invention and not to limit the same, and a person of ordinary skill in the art can make modifications or equivalents to the specific embodiments of the present invention with reference to the above embodiments, and such modifications or equivalents without departing from the spirit and scope of the present invention are within the scope of the claims of the present invention as set forth in the claims.

Claims (10)

1. A magnetic coupling wireless power transmission device for a converter valve is characterized by comprising a top plate (11), a bottom plate (12), and an energy supply coil (15) and a driving supporting plate (2) which are arranged between the top plate (11) and the bottom plate (12);
the energy sending coil (15) is fixed on the driving supporting plate (2);
the device is connected with the converter valve (10) through a top plate (11) and a bottom plate (12).
2. A magnetically coupled wireless power transfer device for converter valves according to claim 1, characterized in that the power supply coil (15) and the driving pallet (2) are multiple, and each driving pallet (2) is provided with one power supply coil (15);
the device also comprises a plurality of pull rods (13), wherein each pull rod (13) sequentially penetrates through the top plate (11), the plurality of driving supporting plates (2) and the bottom plate (12) from top to bottom, and the top plate (11), the plurality of driving supporting plates (2) and the bottom plate (12) are fixed.
3. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 2, characterized in that the tie rod (13) is of a full thread construction;
all the driving supporting plates (2) are fixed with the pull rod (13) through fastening nuts (14).
4. A magnetically coupled wireless power transfer device for converter valves according to claim 3, characterized in that the top plate (11) and the bottom plate (12) are made of metal, and the tie rod (13) and the fastening nut (14) are made of metal or insulating material;
the insulating material is epoxy resin.
5. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 1, characterized in that the power supply coil (15) comprises a first coil (6), a second coil (16) and ferrites (7);
the ferrite (7) is located between the first coil (6) and the second coil (16).
6. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 5, characterized in that the first coil (6) and the second coil (16) each comprise a coil housing (3) and turns inside the coil housing;
the coil shell (3) is provided with a wire turn groove (9), and the wire turn is wound on the wire turn groove (9).
7. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 6, characterized in that the coil housing (3) is further provided with heat dissipation holes (8).
8. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 6, characterized in that the coil housing (3) is of plexiglas or epoxy.
9. The magnetically-coupled wireless power transmission device for the converter valve according to claim 6, wherein the position of the crossover between the turns is fixed by using an insulating tape.
10. A magnetically coupled wireless power transfer arrangement for converter valves according to claim 1, characterized in that the arrangement further comprises a driver (4);
the driver (4) is fixed on the driving support plate (2) through a bolt pin assembly (5), and the energy transmitting coil (15) is fixed on the driving support plate (2) through a fastening bolt (17) and the bolt pin assembly (5).
CN202010020314.3A 2020-01-09 2020-01-09 Magnetic coupling wireless power transmission device for converter valve Pending CN111092494A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010020314.3A CN111092494A (en) 2020-01-09 2020-01-09 Magnetic coupling wireless power transmission device for converter valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010020314.3A CN111092494A (en) 2020-01-09 2020-01-09 Magnetic coupling wireless power transmission device for converter valve

Publications (1)

Publication Number Publication Date
CN111092494A true CN111092494A (en) 2020-05-01

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ID=70398866

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010020314.3A Pending CN111092494A (en) 2020-01-09 2020-01-09 Magnetic coupling wireless power transmission device for converter valve

Country Status (1)

Country Link
CN (1) CN111092494A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113933630A (en) * 2021-10-12 2022-01-14 全球能源互联网欧洲研究院 Measuring method and device for embedded sensor of converter valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113933630A (en) * 2021-10-12 2022-01-14 全球能源互联网欧洲研究院 Measuring method and device for embedded sensor of converter valve

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