EP1282142A2 - Elektrische Wicklungsanordnung - Google Patents
Elektrische Wicklungsanordnung Download PDFInfo
- Publication number
- EP1282142A2 EP1282142A2 EP02090275A EP02090275A EP1282142A2 EP 1282142 A2 EP1282142 A2 EP 1282142A2 EP 02090275 A EP02090275 A EP 02090275A EP 02090275 A EP02090275 A EP 02090275A EP 1282142 A2 EP1282142 A2 EP 1282142A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- winding
- cooling
- subassemblies
- cooling element
- electrical
- 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.)
- Granted
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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
- H01F27/08—Cooling; Ventilating
- H01F27/085—Cooling by ambient air
Definitions
- the invention relates to an electrical winding arrangement with at least two juxtaposed winding subassemblies.
- Such a winding arrangement is known from the German Patent DE 199 12 280 C1.
- the winding arrangement three standing and arranged side by side winding subassemblies having.
- Each of the winding subassemblies is for provided a phase of the electric transformer and has a high voltage winding and a low voltage winding on.
- Each undervoltage winding is coaxial in the associated one High-voltage winding arranged and thereby of this surrounded.
- Between the upper and lower voltage winding is a space left to flow through with cooling air, which forms an annular channel.
- Each of the winding subassemblies each surrounds a core leg of a closed transformer core.
- the object of the invention is an electrical winding arrangement of the type mentioned above, for a comparatively high rated power is designed.
- the object is in an electrical winding arrangement of the type mentioned in the present invention achieved by that between the winding sub-assemblies, a cooling element is arranged.
- the winding subassemblies give Heat directly to the surrounding air and by heat radiation to other surrounding parts, such as the Core or each other winding sub-assemblies.
- the locations of a winding subassembly are heated more strongly, close to another winding subassembly lie.
- the stronger warming is due to that the winding subassemblies there due to their Close stronger each other by the each of them Heat radiation heat and the winding sub-assemblies There are worse cool, because there between them only a small distance exists, so that the more heated Jobs for a cooling medium are less accessible.
- cooling element acts as a between the winding arrangements lying screen for the heat radiation.
- the cooling element is otherwise of the one Winding arrangement to the other emitted heat radiation largely recorded and therefore does not come from the one to the other winding arrangement.
- the cooling element is characterized though warmed up; from the surface of the cooling element is the Heat but delivered directly to the surrounding cooling air, whereby the cooling element is cooled.
- the mutual warming the winding sub-assemblies is thus reduced and a heat accumulation largely between the winding sub-assemblies avoided.
- the Temperature distribution during operation within each of the winding subassemblies evened and the winding subassemblies are better cooled.
- the electrical Winding arrangement with a higher electrical Rated power operable as the electrical winding assembly According to the state of the art.
- the inventive Winding arrangement with the same electrical Rated power to be operated although the requirements to the thermal resistance of the winding subassemblies used insulating material be lower can as in the prior art, so that the electric Winding arrangement with the same electrical rated power is cheaper.
- the cooling element may be in contact with the two winding subassemblies be arranged between them.
- the winding subassemblies leaving a Gaps arranged side by side and the cooling element is as Cooling plate formed, which divides the gap into two Splits.
- This is the area between the two winding subassemblies for cooling the same from a cooling fluid, For example, cooling air, can flow.
- a cooling fluid For example, cooling air
- the cooling fluid become the winding subassemblies and also the cooling plate convectively cooled.
- the winding subassemblies give Heat from radiation absorbed by the cooling plate and therefore not to the other partial windings reach.
- Through the cooling plate are the winding sub-assemblies thermally shielded against each other.
- the cooling plate may be made of a solid material, for example a composite material, be formed.
- the cooling plate Preferably the cooling plate, however, cooling channels to flow through with a Cooling fluid on.
- the cooling channels are taking into account the chosen alignment and arrangement of the plate so guided, that they are as good as possible flowed through by the cooling fluid. With flowing through the cooling channels cooling fluid is the cooling plate even very cool.
- the cooling element completely formed of electrical insulating material. at This design is a good cooling with high dielectric strength reached between the winding sub-assemblies.
- the cooling element can be made of a good heat-conducting material be formed.
- metals are suitable for this purpose.
- the cooling element is made of metal with a electrical insulating material formed as a coating. This shows the cooling element on the high thermal conductivity of the metal and at the same time it is characterized by the insulating effect of the coating a deterioration of important electrical properties the winding arrangement, such as the dielectric strength, avoided.
- the cooling element can also completely formed of a metal.
- This embodiment is particularly suitable where only small requirements exist on the dielectric strength, or no special Requirements for the dimensions of the winding arrangement so that the distance between the winding sub-assemblies can be chosen so that the dielectric strength meets the prescribed requirements.
- the winding subassemblies Components of a transformer and enclose one core leg of a closed transformer core, wherein the cooling element in the window of the transformer core is arranged.
- FIG. 1 shows a section through a transformer 1, which is designed here as a three-phase transformer.
- the transformer 4 has a winding arrangement 2 with winding subassemblies 3 to 5, each arranged standing are and each have a core leg 6, 7 and 8 respectively a transformer core 9 closed via yokes 9A and 9B enclose.
- Each of the sub-winding assemblies 3 to 5 has in each case a high-voltage winding 10, 11 or 12 and a Low voltage winding 13, 14 and 15 on.
- Each undervoltage winding 13, 14 and 15, respectively, are standing within their respective ones High-voltage winding 10, 11 and 12 arranged.
- each high-voltage winding 10, 11, 12 and their associated Undervoltage winding 13, 14 and 15 is a gap 16, 17 and 18 to flow through with a Cooling fluid, here cooling air 19, - as indicated by arrows - leave.
- a Cooling fluid here cooling air 19, - as indicated by arrows - leave.
- the winding assemblies 3 and 4 and 4 and 5 each have a gap 22 and 23 to the flow leave with cooling air 19.
- a cooling element 20 or 21 is provided for improved cooling of the winding stator assemblies 3, 4, 5 the winding assembly 2 is arranged between the juxtaposed Winding subassemblies 3 and 4 or 4 and 5 respectively a cooling element 20 or 21 is provided.
- the cooling elements 20 and 21 are in the present case each designed as a cooling plate (See also Figures 2 and 3, reference numerals 48 and 49).
- the cooling elements 20 and 21 each divide one of the gaps 22 or 23 in sub-columns 22a, 22b or 23a, 23b.
- the spaces 16 to 18 and the Partial gaps 22a, 22b and 23a, 23b flows through cooling air 19.
- the windings 10 to 15 heat directly delivered to the cooling air 19 by convection.
- the windings 10 to 15 give heat in the form of Radiation to the environment. Parts in the environment, such as the core leg 6, absorb this radiation and are heated by it. Also, the windings 10 heat to 15 are more or less strong due to their heat radiation each other.
- the improved cooling with the cooling elements 20 and FIG. 21 will be explained with reference to the cooling element 20. The same applies to the cooling element 21.
- the winding sub-assemblies 3 and 4 especially their high voltage windings 10 and 11, if possible not mutually by delivery of Heat radiation, which is arranged between them Cooling element 20 is provided. It is there between the two winding sub-assemblies 3 and 4, where these or their high-voltage windings 10 and 11 closest come (see also Figures 2 and 3).
- the cooling element 20 otherwise takes the one of the high-voltage winding 10th to the other high-voltage winding 11 and vice versa Heat radiation on and is heated by it. simultaneously the cooling element 20 through the sub-columns 22a and 22b flowing cooling air 19 convectively cooled.
- the cooling elements 20 and 21 are present in each case from a Metal plate 24 or 25 formed, each with a coating made of insulating material 26 and 27 is provided.
- metals come here aluminum or transformer sheet and as heat-conducting Insulating material such as polyester, kraft paper or glass fiber reinforced plastic (GRP) in question.
- the cooling elements 20 and 21 are in through the transformer core 9 formed windows 30 and 31, respectively.
- the cooling elements 20 and 21 are each with cooling channels 28 or 29 (see Figure 2) for the flow of cooling air 19 provided. As a result, the cooling elements 20 and 21 are particularly effective Cooled by the cooling air 19.
- the transformer 1 is specified in FIG Cutting plane shown. There is good to see that the cooling elements 20 and 21 are each formed as cooling plates are and provided for the flow of cooling air 19 Have cooling channels 28 and 29 respectively.
- the winding subassemblies are each with circular cylindrical windings 10 to 15 trained.
- cooling elements 20 and 21 each symmetrically between each of these directly adjacent winding subassemblies 3 and 4 or 4 and 5 are arranged.
- FIG. 3 is a designated in Figure 1 with II Sectional view corresponding representation for a transformer 1a with a winding arrangement 2a with three winding subassemblies 32 to 34 shown.
- Each of the winding subassemblies 32 to 34 corresponding to the winding subassemblies 3 to 5 according to FIG. 1 a high-voltage winding 35, 35 and 37, each having a low voltage winding 38, 39 and 40 coaxially surrounds.
- Between High-voltage windings 35 to 37 and the corresponding associated Low voltage winding 38 to 40 is each a gap 41, 42 and 43 for the flow of cooling air 19th leave.
- Each winding arrangement 32 to 34 surrounds one Core legs 44, 45 and 46 of a transformer core
- the Transformer core 9 corresponds and is self-contained.
- the winding sub-assemblies 32 to 34 with windings 35 to 40, each having a rectangular cross section.
- the core legs 44 to 46 of the Transformer core 47 formed with a rectangular cross-section.
- Cooling element 48 and 49 are each made of one Solid material formed.
- the solid material can be a metal or even an insulating material - as already in the description to figure 1 - be.
- the cooling elements 48 and 49 are also in the Winding arrangement 2 according to Figures 1 and 2 instead of the cooling elements 20 and 21 applicable.
- the cooling elements 48 and 49 as the cooling elements 20 and 21 are executed.
- the total width B3 is set. Assuming that the cross-sectional area of the core legs 44, 45, 46 each should remain constant, so takes with decreasing total width B3 the length L2 of the core leg 46 and thus also the length L1 of the high-voltage winding 37th as well as the corresponding dimension of the undervoltage winding 40 too. As a result, the amount decreases with decreasing total width B3 of the core material used, because over the total width B3 extending yoke of the transformer core 47 (corresponding to the yokes 9A and 9B shown in FIG. 1) of the transformer core 9) become shorter.
- the amount of conductor material used, from which the winding conductors of the windings 37 and 40 are each formed be because the length L1 of the high-voltage winding 37 and the corresponding dimension of the winding 40 increases.
- the material quantities for the winding conductor material and the core material behave in opposite directions with changing overall width B3.
- the core material and the same unit of quantity of the Conductor material of the windings incur different costs can be the total width B3 and thus the dimensions B1 and B2, L1 and L2 and the corresponding dimensions of the low voltage winding 40 and the corresponding dimensions of the winding subassemblies 32 and 33 so that the Total cost of conductor material and core material at are lowest.
- the Winding sub-assembly 32 and 33 or 33 and 34 specifically their High-voltage windings 35 and 36 or 36 and 38 large facing surfaces 50 and 51 or 52 and 53, over which the high-voltage windings 35 to 37 each heat to the respective opposite high-voltage windings 35 to 37 deliver.
- the cooling elements 48 and 49 each exactly between the winding sub-assemblies 32 and 34th become the winding sub-assemblies 32 to 34 against each other thermally shielded and each of the high voltage windings 35 to 37 delivered heat from the cooling elements 48 and 49 and discharged to the cooling air 19.
- this thermal shield can be the width B3 of the transformer 1A are chosen smaller than without the provision of such Cooling elements 48 and 49, since then the respective distance between the winding sub-assemblies 32 to 34 and their High-voltage windings 35 and 36 or 36 and 37 chosen larger must be, so that a flow of cooling air 19 only sufficient for their cooling in nominal operation and inadmissible high heating of the high-voltage windings 35 to 37 is avoided.
- width B3 is of course also at Winding subassemblies with another non-circular Cross section, for example elliptical cross section, possible.
- the windings 10 to 15 and 35 to 40 can each as Self-supporting winding formed with a dry insulation be.
- casting resin is used as insulating material or adhesive resin for use; also can fiberglass material be used for insulation.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
Claims (7)
- Elektrische Wicklungsanordnung (2,2a) mit zumindest zwei nebeneinander angeordneten Wicklungsteilanordnungen (3,4;32,33),
dadurch gekennzeichnet, dass zwischen den Wicklungsteilanordnungen (3,4;32,33) ein Kühlelement (20;48) angeordnet ist. - Elektrische Wicklungsanordnung (2,2a) nach Anspruch 1, dadurch gekennzeichnet, dass die Wicklungsteilanordnungen (3,4,;32,33) unter Belassung eines Spalts (22) nebeneinander angeordnet sind, und dass Kühlelement (20) als Kühlplatte ausgebildet ist, die den Spalt (22) in zwei Teilspalten (22A,22B) teilt.
- Elektrische Wicklungsanordnung (2,2a) nach Anspruch 2, dadurch gekennzeichnet, dass die Kühlplatte (20) Kühlkanäle (28) zur Durchströmung mit einem Kühlfluid (19) aufweist.
- Elektrische Wicklungsanordnung (2,2a) nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Kühlelement (48) vollständig aus elektrischem Isolierstoff besteht. - Elektrische Wicklungsanordnung (2,2a) nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Kühlelement (20) aus Metall mit einem elektrischen Isolierstoff als Überzug gebildet ist. - Elektrische Wicklungsanordnung (2,2a) nach einem der Ansprüche 1 bis 3,
dadurch gekennzeichnet, dass das Kühlelement (48) vollständig aus einem Metall gebildet ist. - Elektrische Wicklungsanordnung (2,2a) nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass die Wicklungsteilanordnungen (3,4;32,33) Bestandteile eines Transformators (1,1A) sind und jeweils einen Kernschenkel (6,5,;44,45) eines geschlossenen Transformatorkerns (9;47) umschliessen, wobei das Kühlelement (20;48) im Fenster (30) des Transformatorkerns (9;47) angeordnet ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10137518 | 2001-07-30 | ||
DE2001137518 DE10137518C1 (de) | 2001-07-30 | 2001-07-30 | Elektrische Wicklungsanordnung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1282142A2 true EP1282142A2 (de) | 2003-02-05 |
EP1282142A3 EP1282142A3 (de) | 2003-05-28 |
EP1282142B1 EP1282142B1 (de) | 2010-09-29 |
Family
ID=7693879
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP20020090275 Expired - Lifetime EP1282142B1 (de) | 2001-07-30 | 2002-07-23 | Elektrische Wicklungsanordnung |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP1282142B1 (de) |
DE (2) | DE10137518C1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2193530B1 (de) * | 2007-09-28 | 2016-09-14 | Siemens Aktiengesellschaft | Elektrischer wicklungskörper und transformator mit forcierter kühlung |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998034238A1 (en) | 1997-02-03 | 1998-08-06 | Asea Brown Boveri Ab | Axial air-cooling of transformers |
DE19912280C1 (de) | 1999-03-18 | 2000-09-14 | Siemens Ag | Transformator und Verfahren zur Kühlung eines Transformators |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62165307A (ja) * | 1986-01-16 | 1987-07-21 | Fuji Electric Co Ltd | 液冷式均一磁場コイル |
-
2001
- 2001-07-30 DE DE2001137518 patent/DE10137518C1/de not_active Expired - Lifetime
-
2002
- 2002-07-23 EP EP20020090275 patent/EP1282142B1/de not_active Expired - Lifetime
- 2002-07-23 DE DE50214685T patent/DE50214685D1/de not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998034238A1 (en) | 1997-02-03 | 1998-08-06 | Asea Brown Boveri Ab | Axial air-cooling of transformers |
DE19912280C1 (de) | 1999-03-18 | 2000-09-14 | Siemens Ag | Transformator und Verfahren zur Kühlung eines Transformators |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2193530B1 (de) * | 2007-09-28 | 2016-09-14 | Siemens Aktiengesellschaft | Elektrischer wicklungskörper und transformator mit forcierter kühlung |
Also Published As
Publication number | Publication date |
---|---|
EP1282142A3 (de) | 2003-05-28 |
EP1282142B1 (de) | 2010-09-29 |
DE10137518C1 (de) | 2003-04-24 |
DE50214685D1 (de) | 2010-11-11 |
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