CN119008202A - Intelligent magnetic type three-dimensional coiled iron core adjustable reactor - Google Patents
Intelligent magnetic type three-dimensional coiled iron core adjustable reactor Download PDFInfo
- Publication number
- CN119008202A CN119008202A CN202411488815.9A CN202411488815A CN119008202A CN 119008202 A CN119008202 A CN 119008202A CN 202411488815 A CN202411488815 A CN 202411488815A CN 119008202 A CN119008202 A CN 119008202A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims description 12
- 238000004804 winding Methods 0.000 claims abstract description 11
- 239000004020 conductor Substances 0.000 claims abstract 25
- 230000002093 peripheral effect Effects 0.000 claims description 13
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000000110 cooling liquid Substances 0.000 description 10
- 230000017525 heat dissipation Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Classifications
-
- 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
- H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
- H01F27/306—Fastening or mounting coils or windings on core, casing or other support
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
-
- 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
- H01F27/08—Cooling; Ventilating
- H01F27/10—Liquid cooling
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
本发明涉及电抗器技术领域，具体涉及一种智磁式立体卷铁芯可调式电抗器，包括两个磁饼，两个磁饼之间设有多个芯柱，各芯柱的外部均绕设有导线，所述导线为中空结构，所述导线包括内周面和外周面，所述导线的内周面形成空腔，所述导线的外周面与芯柱接触设置，所述导线的两端均电连接有导电接头，所述导电接头的内部设有连通腔，所述连通腔与空腔连通，所述连通腔的一端设有导通口，通过所述导通口能够对空腔抽负压，从而使导线沿绕设方向发生形变，这样不仅使导线的外绝缘层不会发生摩擦，同时能够避免漏磁现象的发生。
The present invention relates to the technical field of reactors, and in particular to a smart magnetic three-dimensional wound core adjustable reactor, comprising two magnetic cakes, a plurality of core columns being arranged between the two magnetic cakes, a conductor being wound around the outside of each core column, the conductor being a hollow structure, the conductor comprising an inner circumference and an outer circumference, the inner circumference of the conductor forming a cavity, the outer circumference of the conductor being arranged in contact with the core column, both ends of the conductor being electrically connected with conductive joints, a connecting cavity being arranged inside the conductive joint, the connecting cavity being connected with the cavity, a conducting port being arranged at one end of the connecting cavity, negative pressure being drawn into the cavity through the conducting port, thereby causing the conductor to deform along the winding direction, so that not only the outer insulating layer of the conductor will not be rubbed, but also the occurrence of magnetic leakage can be avoided.
Description
Technical Field
The invention relates to the technical field of reactors, in particular to an intelligent magnetic type three-dimensional coiled iron core adjustable reactor.
Background
Reactors are one of the common passive electronic components in electrical systems, which play an important role in power transmission, power conversion, power quality control, etc., and are often used to control the characteristics of the inductance and capacitance in a circuit, and are mainly used to adjust the magnitude and phase of current and voltage to optimize the performance of the power system. An intelligent magnetic type three-dimensional coiled iron core adjustable reactor belongs to a magnetic flux control adjustable reactor, and is a reactor capable of properly changing the reactance value in operation.
In the prior art, in the manufacturing process of the reactor, an interval is arranged between every two turns of wires, and the interval can generate magnetic leakage phenomenon, so that the reactor is easy to generate heat in the operation process, and the normal operation of the reactor can be influenced by the heat. In order to avoid this, the interval between each turn of the wires is usually reduced as much as possible during the winding process of the reactor, but this may lead to mutual friction between the insulation layers on the outer surfaces of the wires, thereby generating abrasion, and further affecting the service life of the wires.
Disclosure of Invention
Based on the above, it is necessary to provide an intelligent magnetic type three-dimensional coiled iron core adjustable reactor aiming at the technical problem that the current reactor is easy to leak magnetic flux.
The above purpose is achieved by the following technical scheme:
The utility model provides a three-dimensional iron core adjustable reactor of rolling up of intelligence magnetism, includes two magnetism cakes, is equipped with a plurality of stem stems between two magnetism cakes, and the outside of each stem all is around being equipped with the wire, the wire is hollow structure's copper line, the wire includes inner peripheral surface and outer peripheral surface, the inner peripheral surface of wire forms the cavity, the outer peripheral surface and the stem contact setting of wire, the equal electricity in both ends of wire is connected with conductive connection, conductive connection's inside is equipped with the intercommunication chamber, intercommunication chamber and cavity intercommunication, the one end of intercommunication chamber is equipped with the switch-on mouth, through the switch-on mouth can take out the negative pressure to the cavity to make the wire take place the deformation along around establishing the direction.
Further, the dimension of the wire in the direction of the stem axis is greater than the dimension of the wire in the direction perpendicular to the stem axis.
Further, the wire comprises an inner side portion and an outer side portion, the inner side portion is close to the stem, the outer side portion is far away from the stem, a first arc portion and a second arc portion are connected between the inner side portion and the outer side portion, the first arc portion and the second arc portion are symmetrically arranged along the axis direction of the stem, and the middle position of the first arc portion and the middle position of the second arc portion are the minimum thickness position of the wire.
Further, the outer peripheral surface of the wire includes a first outer side surface and a second outer side surface, the first outer side surface corresponds to an inner side portion of the wire, the second outer side surface corresponds to an outer side portion of the wire, and the first outer side surface and the second outer side surface are parallel to the axis of the stem.
Further, the inner peripheral surface of the wire includes a first inner side surface corresponding to an inner side portion of the wire and a second inner side surface corresponding to an outer side portion of the wire.
Further, the first inner side surface and the second inner side surface are both planes, and the planes are parallel to the axis of the stem.
Further, the first inner side surface is provided with a first arc surface, the second inner side surface is provided with a second arc surface, and the arc highest point of the first arc surface and the arc highest point of the second arc surface are close to each other and correspond to each other in the direction perpendicular to the axis of the core column.
Further, the first inner side surface is provided with a first arc-shaped inclined surface, the second inner side surface is provided with a second arc-shaped inclined surface, and the first arc-shaped inclined surface and the second arc-shaped inclined surface are close to each other and staggered in the direction perpendicular to the axis of the core column.
Further, a connecting ring is arranged on the conductive connector and is used for connecting other electrical elements; the conductive connector is also provided with a conductive interface which is used for being electrically connected with the lead.
Further, the two magnetic cakes are connected through the connecting component, the connecting component comprises an upper yoke piece and a lower yoke piece, the upper yoke piece is clamped with one magnetic cake, the lower yoke piece is clamped with the other magnetic cake, and the upper yoke piece is fixedly connected with the lower yoke piece through a bolt.
The beneficial effects of the invention are as follows:
when the intelligent magnetic type three-dimensional coiled iron core adjustable reactor provided by the invention is used for winding the wires on the core column, a certain interval is reserved between every two turns of wires, negative pressure is pumped to the cavity through the conducting port, the wires are deformed along the winding direction, and the interval between every two turns of wires is gradually reduced until the wires are in contact state, so that friction between outer insulating layers of the wires is reduced as much as possible in the winding process, and meanwhile, the magnetic leakage phenomenon can be avoided; meanwhile, through negative pressure pumping to the cavity, hot gas in the wire can flow out, the heat dissipation effect of the wire is improved, and the performance of the reactor is further improved.
Secondly, the conducting port can be connected with the vacuum pump to pump negative pressure to the cavity, and can be used for injecting cooling liquid, so that the conducting wire is cooled through the cooling liquid, and the heat dissipation effect of the conducting wire is further improved.
Drawings
Fig. 1 is a schematic perspective view of an intelligent magnetic type three-dimensional wound core adjustable reactor according to an embodiment of the present invention;
fig. 2 is a side view of an intelligent magnetic type three-dimensional coiled iron core adjustable reactor according to an embodiment of the present invention;
Fig. 3 is a top view of an intelligent magnetic type three-dimensional coiled iron core adjustable reactor according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view A-A of FIG. 3;
FIG. 5 is an enlarged view of the structure at C in FIG. 4;
FIG. 6 is another state diagram of FIG. 5;
fig. 7 is an enlarged view of the structure of the second embodiment of fig. 5;
fig. 8 is an enlarged view of the structure of the third embodiment of fig. 5;
Fig. 9 is a schematic diagram of a three-dimensional structure of a conductive connector in an intelligent magnetic three-dimensional wound core adjustable reactor according to an embodiment of the invention;
fig. 10 is a side view of a conductive connector in an intelligent magnetic type three-dimensional rolled iron core adjustable reactor according to an embodiment of the invention;
fig. 11 is a sectional view of B-B in fig. 10.
Wherein:
100. A bolt; 200. an upper yoke; 300. a magnetic cake; 400. a stem; 500. a conductive contact; 510. a connecting ring; 520. a conduction port; 530. a conductive interface; 540. a communication chamber; 600. a wire; 601. an inner portion; 602. a first arcuate portion; 603. an outer portion; 604. a second arcuate portion; 610. a cavity; 621. a first outer side; 622. a second outer side; 623. a first extrados; 624. a second extrados; 631. a first inner side; 632. a second inner side; 633. a first intrados surface; 634. a second intrados surface; 6311. a first arc surface; 6321. a second arc surface; 6312. a first arcuate ramp; 6322. a second arcuate ramp; 700. and a lower yoke.
Detailed Description
The present invention will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present invention. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1 to 11, an intelligent magnetic type three-dimensional rolled iron core adjustable reactor provided by an embodiment of the invention comprises two magnetic cakes 300, a plurality of core columns 400 are arranged between the two magnetic cakes 300, a wire 600 is wound outside each core column 400, the wire 600 is a copper wire with a hollow structure, the wire 600 comprises an inner peripheral surface and an outer peripheral surface, a cavity 610 is formed on the inner peripheral surface of the wire 600, the outer peripheral surface of the wire 600 is in contact with the core columns 400, two ends of the wire 600 are electrically connected with conductive connectors 500, a communication cavity 540 is arranged inside the conductive connectors 500, the communication cavity 540 is communicated with the cavity 610, a conducting port 520 is arranged at one end of the communication cavity 540, and negative pressure can be drawn into the cavity 610 through the conducting port 520, so that the wire 600 deforms along the winding direction. When the wires 600 are wound on the core column 400, a certain interval is reserved between every two turns of wires 600, negative pressure is pumped to the hollow cavity 610 through the conducting port 520, the wires 600 deform along the winding direction, and the interval between every two turns of wires 600 is gradually reduced until the wires are in contact state, so that friction between outer insulating layers of the wires 600 is reduced as much as possible in the winding process, and meanwhile, the magnetic leakage phenomenon can be avoided; meanwhile, by pumping negative pressure to the cavity 610, hot gas in the wire 600 can flow out, so that the heat dissipation effect of the wire 600 is improved, and the performance of the reactor is further improved. The wire 600 belongs to an enameled wire, and the outer insulating layer is insulating paint.
In this embodiment, three core columns 400 are provided, and the three core columns 400 are distributed in a regular triangle, so that the structure of the reactor is more stable. The magnetic cake 300 is provided with an avoidance groove, and the avoidance groove is used for avoiding the wire 600. The conducting port 520 not only can be connected with a vacuum pump to pump negative pressure to the cavity 610, but also can be filled with cooling liquid, so that the conducting wire 600 is cooled by the cooling liquid, and the heat dissipation effect of the conducting wire 600 is further improved.
In one embodiment, the dimension of the wire 600 along the axial direction of the stem 400 is greater than the dimension of the wire 600 along the direction perpendicular to the axial direction of the stem 400. Thus, the wire 600 is flat, and the contact area between the wire 600 and the stem 400 is large, so that the occurrence of the magnetic leakage phenomenon can be reduced.
In an embodiment, the wire 600 includes an inner portion 601 and an outer portion 603, the inner portion 601 is close to the stem 400, the outer portion 603 is far away from the stem 400, a first arc portion 602 and a second arc portion 604 are connected between the inner portion 601 and the outer portion 603, the first arc portion 602 and the second arc portion 604 are symmetrically arranged along the axial direction of the stem 400, and the middle position of the first arc portion 602 and the middle position of the second arc portion 604 are the minimum thickness position of the wire 600. Thus, when the cavity 610 is pressurized, the middle position of the first arc-shaped portion 602 and the middle position of the second arc-shaped portion 604 are deformed due to the small thickness, so that the wire 600 can be easily deformed along the axial direction of the stem 400, thereby pressing the interval between each turn of the wire 600.
In one embodiment, as shown in fig. 5, the outer peripheral surface of the wire 600 includes a first outer side surface 621 and a second outer side surface 622, the first outer side surface 621 corresponds to the inner portion 601 of the wire 600, the second outer side surface 622 corresponds to the outer portion 603 of the wire 600, and the first outer side surface 621 and the second outer side surface 622 are parallel to the axis of the stem 400. Thus, the first outer side surface 621 can be attached to the stem 400 more tightly, so that more gaps between the first outer side surface and the stem 400 are avoided. A first outer arc surface 623 and a second outer arc surface 624 are connected between the first outer side surface 621 and the second outer side surface 622, the first outer arc surface 623 corresponds to the first arc portion 602, and the second outer arc surface 624 corresponds to the second arc portion 604. When the intermediate position of the first arc-shaped portion 602 and the intermediate position of the second arc-shaped portion 604 are deformed, the first outer arc-shaped surface 623 is gradually contacted with the second outer arc-shaped surface 624 of the adjacent wire 600, and the second outer arc-shaped surface 624 is gradually contacted with the first outer arc-shaped surface 623 of the adjacent wire 600, so that the interval between the wires 600 is gradually narrowed.
As shown in fig. 6, the inner peripheral surface of the wire 600 includes a first inner side surface 631 and a second inner side surface 632, the first inner side surface 631 corresponding to the inner side portion 601 of the wire 600, and the second inner side surface 632 corresponding to the outer side portion 603 of the wire 600. A first intrados 633 and a second intrados 634 are connected between the first medial surface 631 and the second medial surface 632, the first intrados 633 corresponds to the first arc portion 602, and the second intrados 634 corresponds to the second arc portion 604.
In one embodiment, the first inner side 631 and the second inner side 632 are planar and the planes are parallel to the axis of the stem 400. This arrangement makes the structure of the wire 600 simple and easy to manufacture.
In an embodiment, as shown in fig. 7, the first inner side surface 631 has a first arc surface 6311, the second inner side surface 632 has a second arc surface 6321, and the arc highest point of the first arc surface 6311 and the arc highest point of the second arc surface 6321 are close to each other and correspond to each other in a direction perpendicular to the axis of the stem 400. When negative pressure is pumped to the cavity 610, the highest point of the first arc surface 6311 and the highest point of the second arc surface 6321 can be contacted, so that the cavity 610 is divided into two chambers, at this time, a partition board is arranged in the conducting port 520 of the two conductive connectors 500, the conducting port 520 is also divided into two inlets and outlets, so that cooling liquid is introduced into one inlet and outlet, and the cooling liquid flows out from the other inlet and outlet, thereby forming two paths of cooling liquid flowing in opposite directions in the wire 600, avoiding the phenomenon that the temperature difference between two ends of the wire 600 is large, and ensuring that the heat dissipation of the wire 600 is relatively uniform.
In one embodiment, as shown in fig. 8, the first inner side surface 631 has a first arc-shaped inclined surface 6312, and the second inner side surface 632 has a second arc-shaped inclined surface 6322, and the first arc-shaped inclined surface 6312 and the second arc-shaped inclined surface 6322 are adjacent to each other and are staggered in a direction perpendicular to the axis of the stem 400. The first arc inclined surface 6312 and the second arc inclined surface 6322 are staggered, after negative pressure is pumped to the cavity 610 of the wire 600, the contact area between the first inner side surface 631 and the second inner side surface 632 can be increased, so that the cavity 610 is divided into two chambers with a longer distance, and the mutual flow of cooling liquid is avoided; meanwhile, the first arc inclined plane 6312 and the second arc inclined plane 6322 are staggered, so that the thickness of the wire 600 can be distributed more uniformly along the direction perpendicular to the axis of the core column 400, the magnetic field is distributed uniformly, and the magnetic leakage phenomenon is reduced.
In one embodiment, the conductive connector 500 is provided with a connection ring 510, and the connection ring 510 is used for connecting other electrical components; conductive interface 530 is further disposed on conductive contact 500, and conductive interface 530 is configured to electrically connect with conductive wire 600. The connection ring 510 is a copper nose.
In an embodiment, two magnetic cakes 300 are connected by a connecting component, the connecting component comprises an upper yoke piece 200 and a lower yoke piece 700, the upper yoke piece 200 is clamped with one magnetic cake 300, the lower yoke piece 700 is clamped with the other magnetic cake 300, and the upper yoke piece 200 and the lower yoke piece 700 are fixedly connected by a bolt 100.
In combination with the above embodiment, the use principle and working process of the embodiment of the present invention are as follows:
When the wire 600 is wound on the stem 400, a certain interval is reserved between each turn of wire 600, then negative pressure is pumped to the cavity 610 through the conducting port 520, in order to avoid that the first outer side surface 621 of the wire 600 is separated from the surface of the stem 400, two ends of the wire 600 are rotated to keep the wire 600 in a tightened state on the stem 400, after the cavity 610 reaches a preset negative pressure value, the wire 600 is deformed along the winding direction, and then the interval between each turn of wire 600 is gradually reduced until reaching a contact state, so that friction between the outer insulating layers of the wire 600 is reduced as much as possible in the winding process, and meanwhile, the magnetic leakage phenomenon can be avoided. Meanwhile, by pumping negative pressure to the cavity 610, hot gas in the wire 600 can flow out, so that the heat dissipation effect of the wire 600 is improved, and the performance of the reactor is further improved. After the wire 600 is wound, the cooling liquid is introduced through the conducting port 520 of the conductive connector 500, so that the cooling liquid can further radiate heat to the wire 600.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present invention, which are described in more detail and are not to be construed as limiting the scope of the present invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411488815.9A CN119008202A (en) | 2024-10-24 | 2024-10-24 | Intelligent magnetic type three-dimensional coiled iron core adjustable reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202411488815.9A CN119008202A (en) | 2024-10-24 | 2024-10-24 | Intelligent magnetic type three-dimensional coiled iron core adjustable reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN119008202A true CN119008202A (en) | 2024-11-22 |
Family
ID=93488448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202411488815.9A Pending CN119008202A (en) | 2024-10-24 | 2024-10-24 | Intelligent magnetic type three-dimensional coiled iron core adjustable reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN119008202A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203225155U (en) * | 2013-04-05 | 2013-10-02 | 国家电网公司 | On-line cooling device of large-current transformer |
| CN105869830A (en) * | 2016-05-12 | 2016-08-17 | 青岛云路新能源科技有限公司 | Equivalent-magnetic-circuit full-powder-core high-frequency three-dimensional reactor |
| US20210166865A1 (en) * | 2018-06-07 | 2021-06-03 | Siemens Aktiengesellschaft | Core sealing assemblies, core-coil assemblies, and sealing methods |
| CN215069585U (en) * | 2021-07-26 | 2021-12-07 | 深圳市拓成达电子有限公司 | Adjustable current-limiting filter inductor |
-
2024
- 2024-10-24 CN CN202411488815.9A patent/CN119008202A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203225155U (en) * | 2013-04-05 | 2013-10-02 | 国家电网公司 | On-line cooling device of large-current transformer |
| CN105869830A (en) * | 2016-05-12 | 2016-08-17 | 青岛云路新能源科技有限公司 | Equivalent-magnetic-circuit full-powder-core high-frequency three-dimensional reactor |
| US20210166865A1 (en) * | 2018-06-07 | 2021-06-03 | Siemens Aktiengesellschaft | Core sealing assemblies, core-coil assemblies, and sealing methods |
| CN215069585U (en) * | 2021-07-26 | 2021-12-07 | 深圳市拓成达电子有限公司 | Adjustable current-limiting filter inductor |
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