WO2021249623A1 - Method and capacitor unit for high voltage application - Google Patents
Method and capacitor unit for high voltage application Download PDFInfo
- Publication number
- WO2021249623A1 WO2021249623A1 PCT/EP2020/065923 EP2020065923W WO2021249623A1 WO 2021249623 A1 WO2021249623 A1 WO 2021249623A1 EP 2020065923 W EP2020065923 W EP 2020065923W WO 2021249623 A1 WO2021249623 A1 WO 2021249623A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- capacitor unit
- isolator
- layer
- conductor material
- stack
- Prior art date
Links
- 239000003990 capacitor Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 130
- 239000004020 conductor Substances 0.000 claims abstract description 73
- 238000005096 rolling process Methods 0.000 claims abstract description 5
- 239000003921 oil Substances 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 5
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000010959 steel Substances 0.000 claims description 5
- 229910052710 silicon Inorganic materials 0.000 claims description 2
- 239000010703 silicon Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 9
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/32—Wound capacitors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/01—Form of self-supporting electrodes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/16—Organic dielectrics of fibrous material, e.g. paper
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/018—Dielectrics
- H01G4/06—Solid dielectrics
- H01G4/14—Organic dielectrics
- H01G4/18—Organic dielectrics of synthetic material, e.g. derivatives of cellulose
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G4/00—Fixed capacitors; Processes of their manufacture
- H01G4/002—Details
- H01G4/005—Electrodes
- H01G4/008—Selection of materials
Definitions
- Rectangular capacitor units 1 do not fit well in cylindrical isolator housings, leaving much space to be filled with electrical isolator fluids, for example oil, SF 6 or Clean Air, resulting in big dimensions of the housings and high costs.
- electrical isolator fluids for example oil, SF 6 or Clean Air
- Another possibility is to form cylindrical capacitor units out of rectangular flat layer stacks, for example by cutting out cylindrical forms out of rectangular stacks. Cutting produces a lot of waste material, increases costs, introduces defects, and reduces lifetime of capacitor units 1.
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Fixed Capacitors And Capacitor Manufacturing Machines (AREA)
Abstract
The present invention relates to a capacitor unit (1) for high voltage application, comprising at least one stack of at least one layer of isolator material (2), at least one layer of conductor material (3), at least one further layer of isolator material (2) and at least one further layer of conductor material (3), stacked one next to the other. The at least one stack is in form of a coiled cylinder. A method according to the present invention comprises forming at least one layer of isolator material (2), at least one layer of conductor material (3), at least one further layer of isolator material (2) and at least one further layer of conductor material (3) to a stack and rolling the stack to a coiled cylinder.
Description
Description
Method and capacitor unit for high voltage application
The present invention relates to a capacitor unit for high voltage application, comprising at least one stack of at least one layer of isolator material, at least one layer of conductor material, at least one further layer of isolator material and at least one further layer of conductor material stacked one next to the other. A method to the present invention comprises forming the capacitor unit.
Capacitor units in high voltage applications, particularly with high voltages in the range of some Kilovolt up to 1200 kV, comprise alternating layers of conductor and isolator material, building up a stack. The layers are flat, in a plane, with for example square or circle form of plane boundaries. For high voltage applications, capacitors are electrically connected in series or in parallel, and stored in isolators, for example in form of hollow cylindrical columns.
With planes of the capacitor, resulting in cross sections of the capacitor in form of a square or a rectangle, within cylindrical isolators a lot of free space is left, resulting in high production cost and a big size of application units. To produce capacitor units with a circle form of plane boundaries, layers in circle form are cut out of planes, leaving a lot of waste and causing high production costs. To form stacks from plane, flat layers of isolation and conductor material, high effort is necessary to place edges respectively boundaries of the layers accurate one upon the other. Production time, cost and effort are high to produce capacitor units, high tolerances to place stacks in isolators are necessary, leaving wasted space in the isolator, and external electrical connectors of stacks, to connect stacks electrically, are necessary, increasing dimensions of the stacks. Stacks are pressed together to form a capacitor and
place stacks in isolators, introducing defects and increasing rejects.
An object of the present invention is to overcome the problems described above. Especially an object of the present invention is to reduce costs, reduce waste and increase reliability and lifetime of capacitor units. A further object is to enable capacitor units within isolators with reduced free space, cost-effective, with high reliability and without or with reduced number of defects.
The above objects are achieved by a capacitor unit for high voltage application according to claim 1 and/or by a method for a capacitor unit for high voltage application, particularly for a capacitor unit as described above, according to claim 11.
A capacitor unit for high voltage application according to the present invention comprises at least one stack of at least one layer of isolator material, at least one layer of conductor material, at least one further layer of isolator material and at least one further layer of conductor material stacked one next to the other. The at least one stack is in form of a coiled cylinder.
The form of a coiled cylinder for the stack of alternating layers of isolator and conductor material enable a very compact, space reduced form of the capacitor unit with high capacity for high voltage applications. A compact form allows minimized size of isolator housings with maximized capacity of the capacitor units at high voltages, saving costs and material. Coiled cylinders are rolled from stacks of alternating isolator and conductor material sheets, without pressing stacks together, reducing defects and rejects, leading to a longer lifetime and reliability.
The coiled cylinder can comprise more than one stack of at least one layer of isolator material, at least one layer of
conductor material, at least one further layer of isolator material and at least one further layer of conductor material stacked one next to the other. A capacitor unit with high capacity at high voltages is enabled, easy to be upscaled correlating to its application.
The planes of layers can be in parallel to the center line of the cylinder. This results in a smooth cylinder, with low number of defects and warpages.
An isolator housing can be comprised, particularly in form of a cylindrical column, covering the at least one coiled cylinder stack, and/or particularly made of silicon, ceramic and/or a composite material. These materials are good isolators and protect the capacitor unit from environmental impacts, increasing lifetime and reliability. Capacitor units with stacks in form of coiled cylinders fit well into cylindrical columns, without leaving much free space to be filled for example by isolator fluids like oil and/or gases like SF6 or Clean Air, reducing consumed space and costs. Capacitor units for cylindrical columns from stacks in form of a coiled cylinder are formed without or with only little waste, in contrast to capacitor units from the state of the art, in form of rectangular stacks, which are pressed in cylindrical columns directly or after stamping respectively cutting cylindrical bodies out of the rectangular stacks.
The stacks can be electrically in series. This increase capacity of the capacitor units and enables a dimensioning corresponding to the application of the unit. Stacks in form of coiled cylinders are easy to contact by wires, particularly contacting conducting layers without the need of additional electrical jumper flags respectively connection layers, just using electrical connector cables.
A coiled cylinder length can be in the range of at least a meter. A coiled cylinder diameter can be in the range of at least 20 centimeters to 5 meters. This enables capacitor
units with capacities for high voltage applications, with voltages in the rage of Kilovolts, for example up to 1200 kV.
Conductor material layers can comprise or be made of metal, particularly copper, aluminum, and/or steel. These materials are cost-effective with high conductivity and low resistance.
Isolator material layers can comprise paper, particularly oil impregnated paper, and/or plastic material. These materials are cost-effective with good electrical isolation properties, even at high voltages. In combination these materials result in capacitor units with high capacity for high voltage applications .
The capacitor unit can be designed for applications of one and more Kilovolt, particularly up to 1200 Kilovolt, as described above.
A method for a capacitor unit for high voltage applications according to the present invention, particularly for a capacitor unit as described above, comprises the steps:
- forming at least one layer of isolator material, at least one layer of conductor material, at least one further layer of isolator material and at least one further layer of conductor material to a stack and
- rolling the stack to a coiled cylinder.
The method can comprise a step, inserting the capacitor unit in form of a cylinder into an isolator housing, particularly into a cylindrical column isolator housing, completely covering the at least one coiled cylinder stack.
The method can comprise a step, applying a voltage of one and more Kilovolt, particularly up to 1200 Kilovolt, to the capacitor unit, particularly to the capacitor unit comprising stacks connected electrically in series.
The advantages in connection with the described method for a capacitor unit for high voltage applications according to the present invention, particularly for a capacitor unit as described above, are similar to the previously, in connection with the capacitor unit for high voltage application according to the present invention described advantages.
The present invention is further described hereinafter with reference to a drawing with an illustrated embodiment according to the state of the art and to an illustrated embodiment according to the present invention in a further drawing, in which:
Figure 1 illustrates a capacitor unit 1 in side view according to the state of the art, with a rectangular stack of alternating layers of isolator material 2 and conductor material 3, with conductor material layers 3 electrically connected by electrical jumper flags 4 and electrical connector cables 5, and
Figure 2 illustrates a capacitor unit 1 in side view according to the present invention, with a stack of alternating layers of isolator material 2 and conductor material 3 in form of a coiled cylinder, electrical connected only by connector cables 5.
In Figure 1 a capacitor unit 1 according to the state of the art is shown in side view. The capacitor unit 1 comprises a rectangular stack of alternating layers of isolator material 2 and conductor material 3. In Figure 1 only a layer of isolator material 2, a layer of conductor material 3, a further layer of isolator material 2 and a further layer of conductor material 3 stacked one next to the other are shown. Capacitor units 1 can also be provided with only one layer of isolator material 2 and with one layer of conductor material 3, or with more than two layers of isolator material 2 and more than two layers of conductor material 3, particularly
isolator and conductor material layers 2, 3 arranged alternating to each other.
Layers of isolator and conductor material 2, 3 are flat, for example rectangular arranged to a stack. Isolator material comprises for example paper, particularly oil impregnated paper, electrically non-conducting plastics, Teflon, ceramics and/or electrically non-conducting composite materials. Conductor material is good electrically conducting and comprises for example metals, particularly copper, aluminum, steel, silver and/or gold. For stacking flat layers of isolator and conductor material 2, 3 together with homogenous properties along a flat plane, layers are pressed together to a stack. By pressing layers, defects are introduced, and the number of rejects is increased. Defects and rejects reduce lifetime and reliability of capacitor units 1 particularly at high voltages in the range of Kilovolt, for example up to 1200 kV.
Layers of conductor material 3 are electrically connected to external voltage sources respectively the electrical grid via electrical conducting jumper flags 4 and electrical connector cables 5. Jumper flags 4 electrically connect the conductor material layers 3 with electrical connector cables 5, which are connected electrically to external voltage sources respectively the electrical grid. As shown in Figure 1, two jumper flags 4 are arranged on opposite sides of the layer stack, with one jumper flag 4 connecting one layer conductor material 3 with one connector cable 5, and opposite jumper flag 4 is connecting the neighboring respectively stacked above layer conductor material 3 with the other connector cable 5. A layer of isolator material 2 is arranged in between both layers of conductor material 3 stacked next to each other, forming a kind of a sandwich.
With more than two layers conductor material 3, not shown in Figure 1 for reasons of simplicity, alternating, one layer of conductor material 3 is connected to one jumper flag 4 and
connector cable 5, and the next layer of conductor material 3 is connected to the other jumper flag 4 and connector cable 5, followed by a layer conductor material 3 connected to the first one jumper flag 4 and connector cable 5. Respectively a layer of isolator material 2 is arranged between two layers of conductor material 3.
With alternating layers of conductor material 3 connected electrically to respectively opposite jumper flags 4, and with isolator material 2 respectively between adjacent layers of conductor material 3, a high voltage applied to the two jumper flags 4 enables a high amount of charge to be stored in the capacitor unit 1 respectively the capacitor unit 1 has a high capacity. A higher number of layers increases the capacity at same dimensions of layers.
Electrical connection of conductor layers 3 with jumper flags 4 and connector cables 5 is complex, costly and fault prone. Also pressing layers together, to improve capacity of the capacitor unit 1 and reduce volume, increases the number of defects and reduces reliability of the capacitor unit 1. In use, particularly in high voltage applications, capacitor units 1 are arranged in isolator housings, particularly in cylindrical respectively columnar isolator housing for example made of ceramic and/or silicone materials.
Rectangular capacitor units 1 do not fit well in cylindrical isolator housings, leaving much space to be filled with electrical isolator fluids, for example oil, SF6 or Clean Air, resulting in big dimensions of the housings and high costs. Another possibility is to form cylindrical capacitor units out of rectangular flat layer stacks, for example by cutting out cylindrical forms out of rectangular stacks. Cutting produces a lot of waste material, increases costs, introduces defects, and reduces lifetime of capacitor units 1.
In Figure 2, an alternative embodiment, according to the present invention, to capacitor unit 1 of Figure 1, according
to the state of the art, is shown. The capacitor unit 1 in Figure 2 is shown in perspective view from one side.
According to the present invention the stack of alternating layers of isolator material 2 and conductor material 3 is rolled to a form of a coiled cylinder and electrically connected by connector cables 5. The stack comprises one layer of isolator material 2, one layer of conductor material 3, one further layer of isolator material 2 and one further layer of conductor material 3 stacked one next to the other. Alternatively, the stack can comprise more than two, particularly 10 to 100 layers of isolator material 2, and more than two, particularly 10 to 100 layers of conductor material 3. A layer isolator material 2 can be adjacent to a layer conductor material 3 respectively, or more than one layer of isolator material 2 and/or more than one layer of conductor material 3 can be adjacent to each other. Particularly for high voltages more than one layer of isolator material 2 and/or more than one layer of conductor material 3 can be advantageous, to isolate alternating conductor material layers 3 from each other and/or to increase charge to be stored in conductor material layers 3 in electrical contact with each other.
Conductor material layers 3 are for example made of metal, comprising for example copper, aluminum, and/or steel. These materials are cost-effective with high conductivity and low resistance. A thickness of conductor material layers 3 is in the range of micrometer to centimeter. Isolator layers can comprise paper, particularly oil impregnated paper, and/or plastic material. These materials are cost-effective with good electrical isolation properties, even at high voltages.
A thickness of isolator material layers 2 is in the range of micrometer to centimeter. In combination these materials result in capacitor units with high capacity for high voltage applications. High voltage is for example in the range of more than one Kilovolt, particularly in a range up to 1200 kV.
A stack of isolator material layers 2 and conductor material layers 3 is for example made of rectangular flat layers stacked one over the other and rolled in a further production step around an axis respectively center line 6 to form a cylinder, particularly a straight cylinder with circular base and top surfaces. The center line 6 is for example parallel to an edge of isolator material layers 2 and/or conductor material layers 3. Starting the rolling process from an edge of isolator material layers 2 and/or conductor material layers 3, that means from an edge of the stack, the edge is identical or allocated near the center line 6, and the opposite edge of the stack is on the peripheral surface of the cylinder.
An electrical connection of alternating conductor material layers 3, electrically isolated from each other by at least one isolator material layer 2, with at least one isolator material layer 2 on top of the stack and/or as base, to isolate a top or base conductor metal layer 3 from itself due to rolling, the electrical connection of alternating conductor material layers 3 takes place for example by electrical connector cables 5.
Two connector cables 5 are necessary to connect electrically the capacitor unit 1 to external power sources, electrical consumers and/or to the grid. A use of electrical jumper flags 4 is not necessary, saving costs and reducing complexity. Alternating conductor material layers 3 with isolator material layers 2 in between are for example arranged like two meshing comb structures, with even numbers of conductor material layers 3 overlapping respectively in electrical contact without isolator in between on one edge of the stack, for example the edge near the center line 6, and odd numbers of conductor material layers 3 overlapping respectively in electrical contact without isolator in between on the other edge of the stack, for example the edge on the peripheral cylinder surface. Even numbers of conductor material layers 3 are connected by one connector cable 5 to
one electrical pole of high voltage, and odd numbers of conductor material layers 3 are connected by the other connector cable 5 to the other electrical pole of high voltage.
Resulting capacitor unit 1 is less complex compared to capacitor units 1 known from the state of the art, less cost intensive, with no or less defects and more reliability. Several capacitor units can be electrically connected to each other, for example to increase capacity, particularly in series. Capacitor units 1 with cylindrical form are easy, space saving to store in cylindrical, columnar isolator housings, with nearly no spare space to be filled with electrically isolating fluid, particularly SF6, Clean Air and/or oil. Columnar isolator housings are for example hollow cylindrical ceramic, silicone and/or composite material housings, with length in the range of some meters and a cross section in the range of some centimeter to some meter. On the outer surface rips can be formed, to reduce leakage currents across the outer surface. Capacitor units 1 with a related size, particularly with a cylinder length in the range of some meters and a cross section in the range of some centimeter up to some meter, can be covered respectively stored in these isolator housings. One or more capacitor units 1 can be covered respectively stored in an isolator housing, with advantages as described above.
The above described embodiments of the present invention can be used also in combination and combined with embodiments known from the state of the art. For example, several capacitor units 1 can be connected electrically in series and/or parallel. Conducting materials can be or comprise metals like copper, aluminum, steel, gold, silver and electrically conducting composite materials like plastics, and/or paste. Isolator materials can be or comprise materials like paper, oil impregnated paper, electrically isolating plastics, fabrics, and/or electrically isolating composite
materials. Layer thickness can be in the range of micro-, milli- and/or centimeter.
Reference Characters
1 capacitor unit for high voltage application
2 layer of isolator material
3 layer of conductor material
4 electrical jumper flag / connection layer 5 electrical connector cable
6 center line of the cylinder
Claims
1. Capacitor unit (1) for high voltage application, comprising at least one stack of at least one layer of isolator material (2), at least one layer of conductor material (3), at least one further layer of isolator material
(2) and at least one further layer of conductor material (3) stacked one next to the other, characterized in that the at least one stack is in form of a coiled cylinder.
2. Capacitor unit (1) according to claim 1, characterized in that the coiled cylinder comprises more than one stack of at least one layer of isolator material (2), at least one layer of conductor material (3), at least one further layer of isolator material (2) and at least one further layer of conductor material (3) stacked one next to the other.
3. Capacitor unit (1) according to any one of the claims 1 to
2, characterized in that the planes of layers (2, 3) are in parallel to the center line of the cylinder (6).
4. Capacitor unit (1) according to any one of the claims 1 to
3, characterized in that an isolator housing is comprised, particularly in form of a cylindrical column, covering the at least one coiled cylinder stack, and/or particularly made of silicon, ceramic and/or a composite material.
5. Capacitor unit (1) according to any one of the claims 2 to
4, characterized in that stacks are electrically in series.
6. Capacitor unit (1) according to any one of the claims 1 to
5,
characterized in that coiled cylinder length is in the range of at least a meter.
7. Capacitor unit (1) according to any one of the claims 1 to
6, characterized in that coiled cylinder diameter is in the range of at least 20 centimeters to 5 meters.
8. Capacitor unit (1) according to any one of the claims 1 to
7, characterized in that conductor material layers (3) comprise metal, particularly copper, aluminum, and/or steel.
9. Capacitor unit (1) according to any one of the claims 1 to
8, characterized in that isolator material layers (2) comprise paper, particularly oil impregnated paper, and/or plastic material.
10. Capacitor unit (1) according to any one of the claims 1 to 9, characterized in that the capacitor unit (1) is designed for applications of one and more Kilovolt, particularly up to 1200 Kilovolt.
11. Method for a capacitor unit (1) for high voltage applications, particularly for a capacitor unit (1) according to any one of the preceding claims, comprising the step, forming at least one layer of isolator material (2), at least one layer of conductor material (3), at least one further layer of isolator material (2) and at least one further layer of conductor material (3) to a stack and rolling the stack to a coiled cylinder.
12. Method according to claim 11, comprising the step, inserting the capacitor unit (1) in form of a cylinder into an isolator housing, particularly into a
cylindrical column isolator housing, completely covering the at least one coiled cylinder stack.
13. Method according to any one of the claims 11 or 12, comprising the step, applying a voltage of one and more
Kilovolt, particularly up to 1200 Kilovolt, to the capacitor unit (1), particularly to the capacitor unit (1) comprising stacks connected electrically in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2020/065923 WO2021249623A1 (en) | 2020-06-09 | 2020-06-09 | Method and capacitor unit for high voltage application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2020/065923 WO2021249623A1 (en) | 2020-06-09 | 2020-06-09 | Method and capacitor unit for high voltage application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2021249623A1 true WO2021249623A1 (en) | 2021-12-16 |
Family
ID=71266585
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2020/065923 WO2021249623A1 (en) | 2020-06-09 | 2020-06-09 | Method and capacitor unit for high voltage application |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2021249623A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133238A (en) * | 1960-09-26 | 1964-05-12 | Gen Electric | Electrical capacitor construction to reduce shock hazard |
| US4912595A (en) * | 1988-06-20 | 1990-03-27 | Kabushiki Kaisha Route Six | Simple high tension capacitor |
| JP2004087653A (en) * | 2002-08-26 | 2004-03-18 | Matsushita Electric Ind Co Ltd | Metallized film capacitor |
| EP1693865A1 (en) * | 2005-02-18 | 2006-08-23 | Siemens Aktiengesellschaft | High voltage capacitor |
| KR20090107642A (en) * | 2008-04-10 | 2009-10-14 | 한국전기연구원 | Capacitor and its producing method |
| EP3091546A1 (en) * | 2014-02-03 | 2016-11-09 | Lg Chem, Ltd. | Winding-type stacked body for condenser with high capacitance and stacked winding-type condenser using same |
-
2020
- 2020-06-09 WO PCT/EP2020/065923 patent/WO2021249623A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3133238A (en) * | 1960-09-26 | 1964-05-12 | Gen Electric | Electrical capacitor construction to reduce shock hazard |
| US4912595A (en) * | 1988-06-20 | 1990-03-27 | Kabushiki Kaisha Route Six | Simple high tension capacitor |
| JP2004087653A (en) * | 2002-08-26 | 2004-03-18 | Matsushita Electric Ind Co Ltd | Metallized film capacitor |
| EP1693865A1 (en) * | 2005-02-18 | 2006-08-23 | Siemens Aktiengesellschaft | High voltage capacitor |
| KR20090107642A (en) * | 2008-04-10 | 2009-10-14 | 한국전기연구원 | Capacitor and its producing method |
| EP3091546A1 (en) * | 2014-02-03 | 2016-11-09 | Lg Chem, Ltd. | Winding-type stacked body for condenser with high capacitance and stacked winding-type condenser using same |
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