EP1529296B1 - Ensemble enroulement - Google Patents

Ensemble enroulement Download PDF

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Publication number
EP1529296B1
EP1529296B1 EP03792126.9A EP03792126A EP1529296B1 EP 1529296 B1 EP1529296 B1 EP 1529296B1 EP 03792126 A EP03792126 A EP 03792126A EP 1529296 B1 EP1529296 B1 EP 1529296B1
Authority
EP
European Patent Office
Prior art keywords
winding
transformer
windings
arrangement according
shield
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.)
Expired - Lifetime
Application number
EP03792126.9A
Other languages
German (de)
English (en)
Other versions
EP1529296A1 (fr
Inventor
Peter Heinzig
Jens Hoppe
Dietmar Jahnel
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of EP1529296A1 publication Critical patent/EP1529296A1/fr
Application granted granted Critical
Publication of EP1529296B1 publication Critical patent/EP1529296B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • 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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/36—Electric or magnetic shields or screens
    • H01F27/363—Electric or magnetic shields or screens made of electrically conductive material

Definitions

  • the invention relates to a winding arrangement with at least two windings arranged side by side in a row.
  • a transformer winding coaxially surrounded by a tubular electrostatic shield is known.
  • the shield extends over the entire axial length of the winding and terminates with both winding end faces.
  • three more tubular shields surrounding the winding are provided, which decrease stepwise from outside to inside in their axial length and complete all with the upper winding end face of the winding.
  • the variable in length electrostatic shields are intended to achieve a uniform voltage distribution along the winding at a pulse voltage stress of the winding;
  • the electrostatic signs act as capacitors for voltage dissipation.
  • a winding arrangement with a low voltage winding wound around a transformer core.
  • the low-voltage winding is surrounded by a high-voltage winding having concentrically extending winding planes, wherein the windings of the winding planes are wound on insulating elements.
  • a shield is provided, which encloses both windings concentrically.
  • the shield has, in addition to a supporting structure made of insulating material, inter alia, a conductive layer which is electrically connected to the high voltage side. At the two free ends of the shield forms tubular shields, which in axial Toward the outermost winding layer.
  • the US 3,039,042 discloses a transformer having primary and secondary windings and a shield for electrostatic shielding of the windings.
  • Winding arrangements with at least two windings arranged in series next to one another may, for example, have a corresponding core, wherein each of the windings encloses a leg of the core, which are magnetically connected outside the windings with core yoke to form a closed circuit. Furthermore, it is customary to accommodate such a winding arrangement in a boiler formed with conductive walls and to fill the boiler with an insulating medium, for example cooling oil.
  • winding arrangements may be provided for transformers, wherein each of the two windings each forms a transformer winding of a respective transformer winding combination.
  • the transformer windings formed with the windings are in each case assigned to a phase and an electrical side, for example the primary side of the transformer, wherein each of the transformer winding combinations has a second transformer winding, which forms the other electrical side of the corresponding phase.
  • HVDC high-voltage DC transmission applications
  • the windings must be designed for the application of such harmonics or DC voltages.
  • the windings are subjected before commissioning a corresponding AC and DC voltage test. In such a DC voltage test, the windings are one after the other or all acted upon together with a test DC voltage.
  • the object of the invention is to provide a winding arrangement which has a high electrical strength.
  • the object is provided with a winding arrangement with at least two windings arranged next to one another in a row, which are each surrounded by a barrier arrangement formed with an insulating material and each having a tubular electric shield in the area of each of the two Winding end faces of at least one of the windings, each shield surrounding the at least one winding coaxially leaving a gap and extending outwardly axially beyond the respective winding end face such that its axial height relative to the respective winding end face is equal to or greater than half of the radial Width of the gap is.
  • the windings are each surrounded by a formed with insulating barrier arrangement, is a high electrical insulation against a possibly existing core legs and also against a possibly existing boiler, which may have inside magnetic Kesselwandableitch and in which the winding assembly is arranged, ie opposite outside the winding lying electrical parts, given.
  • the tubular electrical shields in the region of each winding end face, it is achieved that the electric field is guided there in such a way that the lowest possible electrical load on the barrier arrangement takes place there.
  • the barrier arrangement has at least one wall of insulating material surrounding the winding and in particular surrounds the radially outer, formed by the winding jacket surface and the winding end side winding edge on the winding end faces of a winding, so is achieved with the shields in particular in that the electric field strength which forms between the shield and the corresponding winding, in particular its winding edge, which occurs, for example, when the windings are subjected to direct voltage or direct voltage testing, stands substantially vertically on the surface of the wall of the barrier arrangement and emerges from it exit. So there are very few here tangential, ie along the surface of the wall of the barrier assembly directed electric field strength components.
  • the height must also increase correspondingly with increasing radial width of the intermediate gap.
  • the inventive design of the winding arrangement proves to be particularly advantageous.
  • By providing the barrier arrangement and the electrostatic shields a particularly compact construction of the winding arrangement with the boiler is also possible, since the in particular at a DC voltage forming electrical fields - as described - out and evened outwards, whereby the probability of Rollover between one of the windings and arranged outside the windings electrically conductive parts is reduced to other potential.
  • An electrically particularly safe winding arrangement results when all windings have in the region of their winding end faces such signs, as provided in the at least one winding.
  • the two electrical shields are formed together with a continuous, axially extending over the entire winding tubular overall shield.
  • a corresponding shielding is achieved to the outside along the entire winding.
  • the winding assembly forms a choke for high voltage direct current (HVDC) transmission systems.
  • HVDC high voltage direct current
  • the winding arrangement according to the invention is particularly suitable for such a throttle.
  • each of the two windings each forms an outer transformer winding of a respective transformer winding combination, wherein each transformer winding combination forms the outer transformer winding which coaxially surrounds an inner transformer winding.
  • the two transformer windings are magnetically coupled and serve to transform an electrical phase, for example a polyphase electrical network.
  • the winding arrangement is preferably part of a transformer for HVDC systems.
  • the transformer may be exposed to a high DC voltage; Due to the inventive design, the winding arrangement is therefore particularly well suited for such a transformer.
  • the barrier arrangement can be designed, for embracing the outer winding edge, for example in such a way that the wall is formed with a tube of insulating material which radially surrounds the winding and projects beyond the winding end side, and with an insulating disk which closes the insulating material in a cover-like manner on each end face.
  • each barrier arrangement in the region of the winding end faces in each case has at least one rounded outer angle ring, which surrounds the outer winding edge.
  • the shields each have a shield for field guidance in the region of their ends. With the shielding for field management high concentrations of electric field strength in the region of the ends of the shields are avoided.
  • the winding assembly is disposed in a conductive vessel.
  • FIG. 1 is a winding assembly having two juxtaposed in a row windings 1 and 2, each extending along an axis 85 and 86, shown.
  • the electrical connections of the windings 1 and 2 are for the sake of clarity in FIG. 1 omitted.
  • Each of the windings 1 and 2 is surrounded by a respective barrier arrangement 3 or 4 formed of insulating material.
  • Each of the barrier assemblies 3 and 4 has on each of the winding end faces 5, 6, 7 and 8 an outer angle ring 9, 10 and 11, 12, respectively.
  • an inner angle ring 13, 14 and 15, 16 are provided at the winding end faces 5, 6 and 7, 8, an inner angle ring 13, 14 and 15, 16 are provided.
  • the outer angle rings 9, 10 and 11, 12 each encompass the winding outer surface 5, 6 and 7 or 8 formed with the winding jacket surface 17 and 18 and the adjacent, radially outer winding edge 19 and 20 and. 21 or 22.
  • the inner angle rings 13, 14 and 15, 16 respectively engage around a radially inner winding edge 19A, 20A and 21A, 22A.
  • the tubular overall shields 23 and 24 are provided.
  • the overall shields 23 and 24 surround the windings 1 and 2, leaving a gap 23A and 24A and are hinged to ground potential, d. H. Connected to earth potential via a connection.
  • the overall shields 23 and 24 each extend over the entire axial length of the associated windings 1 and 2 and on the winding end faces 5, 6 and 7, 8 beyond the winding end faces, in such a way that - as exemplified in the overall shield 23 -
  • the axial, relative to the winding end face 5 related height B is more than half the radial width A of the intermediate gap 23A.
  • the winding edge 19 it is particularly well with the outer angle ring 9 electrically opposite outside of the winding 1 arranged conductive parts - such.
  • B the core 25, the boiler 26 or arranged in the boiler 26 on the wall 27 of the magnetic laminated core 28 - isolated.
  • the overall shield 23 it is additionally achieved in this area that the electric field originating from the winding end face 5 and the winding jacket surface 17 in the region of the winding edge 19, which is established during operation or during a DC voltage test, is guided on the surfaces 29 and 30 of the outer angle ring 9 is almost vertical and ends on the plate 23.
  • the electrical load on the barrier assembly 3 in the region of the winding edge 19 when exposed to a DC voltage during operation or in a DC voltage test low.
  • the barrier assemblies 3 and 4 with their outer angle rings 9, 10, 11 and 12 and the inner angle rings 13, 14, 15 and 16 are formed in particular from Presspan.
  • the transformer tank 26 may be filled with an insulating medium such as cooling oil.
  • FIG. 2 is a sectional view through a provided for a two-phase transformer winding arrangement shown.
  • transformer winding combinations 32 and 33 each extending along an axis 87 and 88, respectively, with the transformer winding combination 32 having an outer transformer winding 34 and an inner transformer winding 35 and the second transformer winding combination 33 has an outer transformer winding 37 and an inner transformer winding 36.
  • the respective outer transformer windings 34 and 37 surround the respective inner transformer windings 35 and 36 coaxially. Again, the electrical connections of the transformer windings 34, 35, 36 and 37 are not shown for clarity.
  • Each of the transformer windings 34, 35, 36, 37 is surrounded by a barrier arrangement 38, 39, 40, 41 assigned to it.
  • Each of the barrier assemblies 38, 39, 40, 41 faces the outer angle rings 9, 10, 11, and 12, respectively FIG. 1 Comparable outer angle rings 42, 43, 44, 45, 46, 47, 48 and 49 and to the inner angle rings 13,14, 15 and 16 according to FIG. 1 comparable inner angle rings 50, 51, 52, 53, 54, 55, 56, 57 on.
  • the transformer windings 34 and 37 surrounding electrical shields 62, 63 and 64 and 65 are provided.
  • the electrical shields 62, 63, 64 and 65 surround their respective windings forming a respective intermediate gap 62A, 63A, 64A and 65A, respectively.
  • the two individual shields 62 and 63 are provided which each extend over only a part of the axial length of the transformer winding 34.
  • the overall shields 23 and 24 each combine the function of the two shields 62 and 63 or 64 and 65.
  • the shields 62, 63, 64 and 65 extend in the axial direction over the respective winding end face 58, 59, 60 and 61 such that - as explained in the example of the shield 62 - their respective axial relative to the winding end face 58, 59, 60, 61 related Height D is at least equal to half the radial width C of the intermediate gap 62A.
  • the winding arrangement according to FIG. 2 is disposed within a transformer tank 66.
  • Each of the transformer winding combinations 32 and 33 surrounds a core leg 67 and 68, respectively, of a transformer core 69; the core legs 67 and 68 are magnetically connected via core yokes 70 and 71 to form a closed magnetic circuit.
  • magnetic-laminated cores 74 and 75 are provided for better magnetic field guidance.
  • the barrier arrangements 38 to 41 may be formed of pressboard, and the transformer tank 66 may also be filled with an insulating medium, for example cooling oil.
  • the electric shields 62, 63, 64 and 65 have the same function as the overall screens 23 and 24 according to FIG. 1 namely, in particular in the core window 76 of the transformer core 69 to guide the electric field so that it passes tangentially through the outer angle rings 46 and 42 or 43 and 47 and a small electrical load of the barrier assembly 38 and 40 occurs.
  • Shields 62 to 64 shown may be provided.
  • the shields 62 and 63 and / or 64 and 65 according to FIG. 2 in the winding arrangement according to FIG. 2 each by corresponding axially continuous overall screens, as in FIG. 1 shown to be replaced.
  • the shields 62 and 63 are then together, so in one piece, formed with a continuous, extending axially over the entire winding overall shield;
  • the shields 64 and 65 can also be omitted here.
  • the shields 64 and 65 can also be omitted in this embodiment, the shields 62 and 63 are sufficient for shielding; However, in order to achieve a particularly good shielding, 58 to 60 shields 62, 63, 64 and 65 are provided in the region of all winding end faces.
  • barrier arrangements 3, 4 according to FIGS. 1 and 38 to 41 according to Fig. 2 be formed with multiple layers, ie with multiple outer angle rings and inner angle rings.
  • the shields 62 to 65 and 84 and the overall shields 23 and 24 may have in the region of their ends shields for field guidance, as in the FIGS. 3 and 4 each shown.
  • FIG. 3 a section in the region of a winding end side 79 of a winding 77 lying cutout is shown.
  • the winding 77 extends along an axis 78 and is surrounded by an intermediate gap 80 surrounded by a shield 81, which is representative of the shields 62 to 65 or the overall shields 23 and 24 can be seen.
  • the shield 81 In the region of its end 82, the shield 81 has a shield 83 for field guidance. This surrounds the axis 78 and extends in the circumferential direction of the shield 81 along the end 82.
  • the shield has two conductive wires 84 and 84 A, which are each electrically insulated with a corresponding insulation 89 and 89 A and together with a total insulation 90.
  • the two conductive wires 84 and 84A are connected to ground potential.
  • the two wires 84 and 85 are along their Length along the circumference of the shield 81 interrupted at least once, so that there is no closed turn.
  • the shield 83 serves to avoid field elevations or high field concentrations in the region of the end 82 of the screen 81.
  • FIG. 4 a modified shield 91 for field guidance is shown; it has in comparison to the shield 93 after FIG. 3 a single conductive wire 92 surrounded by electrical insulation 93.
  • the wire 92 is also connected to earth potential and interrupted along its length along the circumference of the shield 81 at least once, so that there is no closed turn.
  • the shields 83 and 91 are to ensure that no field peaks occur at the end 82 of the shield 81. They can also be designed as an electrical conductive tube, for example with a circular or elliptical cross section, running around the axis 78 along the end of the shield 81. Likewise, instead of a tube, a conductive foil may be provided on a correspondingly shaped carrier body. Also, the shields 83 and 91 can be formed with the shield 81 itself by the shield 81 is bent so that a rounded brim is formed, or it can also be bent so far that the bent part gives a kind of circumferential tube.
  • the shields 62 to 65 and the overall shields 23 and 24 may each have a shield 83 or 91 for field guidance in the region at their ends.

Claims (9)

  1. Agencement d'enroulement ayant au moins deux enroulements (1, 2, 34, 37) disposés les uns à côté des autres suivant une rangée
    qui sont entourés respectivement
    d'un agencement (3, 4, 38, 40) de barrière en matière isolante et ayant respectivement un bouclier (23, 62, 63) électrique tubulaire
    dans la région de chacun des deux côtés (5, 6, 58, 59) frontaux
    d'au moins l'un des enroulements (1, 34),
    chaque bouclier (23, 62, 63) entourant le au moins un enroulement (1, 34)
    coaxialement en laissant un intervalle (23A, 62A, 63A) intermédiaire et s'étendant axialement vers l'extérieur au-delà du côté (5, 6, 58, 59) frontal de l'enroulement, de manière à ce que sa hauteur (B, D) axiale rapportée au côté (5, 6, 58, 59) frontal de l'enroulement soit supérieure ou égale à la moitié de la largeur (A, C) radiale de l'intervalle (23A, 62A, 63A) intermédiaire.
  2. Agencement d'enroulement suivant la revendication 1, caractérisé en ce que
    les deux boucliers électriques sont formés conjointement par un bouclier (23, 24) conjoint tubulaire continu et s'étendant axialement sur tout l'enroulement (1, 2)
  3. Agencement d'enroulement suivant la revendication 1 ou 2, qui forme une bobine pour des systèmes de transmission de courant continu à haute tension.
  4. Agencement d'enroulement suivant la revendication 1 ou 2, en ce que chacun des deux enroulements (34 ; 37) forme respectivement un enroulement (34 ; 37) extérieur de transformateur d'une combinaison (32 ; 33) d'enroulement de transformateur, chaque combinaison (32 ; 33) d'enroulement de transformateur ayant l'enroulement (34 ; 37) extérieur de transformateur qui entoure coaxialement un enroulement (35 ; 36) intérieur de transformateur.
  5. Agencement d'enroulement suivant la revendication 4, qui fait partie d'un transformateur pour des systèmes de transmission de courant continu en haute tension.
  6. Agencement d'enroulement suivant l'une des revendications précédentes, caractérisé en ce que
    l'agencement (3, 4 ; 38, 40) de barrière, a, dans la zone des côtés (5, 6 ; 7, 8 ; 58, 59 ; 60, 61) frontaux d'enroulement, respectivement au moins un arceau (9 à 12 ; 42, 43, 46, 47) extérieur qui prend le bord (19 à 21) de l'enroulement extérieur radialement.
  7. Agencement d'enroulement suivant l'une des revendications précédentes, caractérisé en ce que les boucliers (62 à 63 ; 23, 24) ont dans la partie de leur extrémité respectivement un blindage (83, 91) de guidage du champ.
  8. Agencement d'enroulement suivant l'une des revendications précédentes, qui est disposé dans un chaudron (26, 66) conducteur de l'électricité.
  9. Agencement d'enroulement suivant l'une des revendications précédentes, caractérisé en ce que les enroulements (1, 2 ; 34, 37, 35, 36) entoure respectivement une branche (67 ; 68) d'un noyau (25, 69) de transformateur.
EP03792126.9A 2002-08-16 2003-07-30 Ensemble enroulement Expired - Lifetime EP1529296B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10238521 2002-08-16
DE10238521A DE10238521B4 (de) 2002-08-16 2002-08-16 Wicklungsanordnung
PCT/DE2003/002592 WO2004019351A1 (fr) 2002-08-16 2003-07-30 Ensemble enroulement

Publications (2)

Publication Number Publication Date
EP1529296A1 EP1529296A1 (fr) 2005-05-11
EP1529296B1 true EP1529296B1 (fr) 2016-11-16

Family

ID=31197250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03792126.9A Expired - Lifetime EP1529296B1 (fr) 2002-08-16 2003-07-30 Ensemble enroulement

Country Status (8)

Country Link
EP (1) EP1529296B1 (fr)
CN (1) CN1331171C (fr)
AU (1) AU2003264248A1 (fr)
BR (1) BRPI0313483B1 (fr)
CA (1) CA2495382C (fr)
DE (1) DE10238521B4 (fr)
HK (1) HK1080211B (fr)
WO (1) WO2004019351A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2369602B1 (fr) * 2010-03-23 2013-05-29 ABB Technology AG Agencement doté d'au moins deux bobines installées l'une sur l'autre de manière axiale sur une même branche du noyau
CN102884597B (zh) * 2010-03-29 2017-09-29 西门子公司 用于安装变压器的方法和设备
EP2430643B1 (fr) * 2010-06-28 2012-09-12 ABB Technology AG Transformateur à pinces blindées
EP2584573A1 (fr) * 2011-10-18 2013-04-24 ABB Technology AG Système d'isolation haute tension
EP3255644B1 (fr) 2016-06-10 2021-06-02 ABB Power Grids Switzerland AG Agencement de refroidissement
DE102017221593A1 (de) * 2017-11-30 2019-06-06 Siemens Aktiengesellschaft Wicklungsanordnung
EP3648130B1 (fr) * 2018-10-31 2021-07-07 ABB Power Grids Switzerland AG Transformateur et procédé de fabrication d'un transformateur
CN113948298A (zh) * 2021-10-26 2022-01-18 保定保菱变压器有限公司 一种壳式变压器铁心用内衬屏蔽结构及安装方法
DE202022107019U1 (de) 2022-12-15 2023-01-17 Weidmann Holding Ag Elektrische Abschirmung

Citations (4)

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Publication number Priority date Publication date Assignee Title
US3039042A (en) * 1959-02-12 1962-06-12 Moeller Instr Company Shielding of transformers
US3353129A (en) * 1965-10-24 1967-11-14 Gen Electric High voltage electric induction apparatus
US4259654A (en) * 1978-05-02 1981-03-31 Asea Aktiebolag Flux control in tape windings
US4864265A (en) * 1988-10-28 1989-09-05 General Signal Corporation Transient suppressing power transformer

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Publication number Priority date Publication date Assignee Title
DE1104052B (de) * 1957-05-29 1961-04-06 Smit & Willem & Co Nv Transformator oder Drosselspule fuer hohe Spannung
US3142029A (en) * 1960-08-22 1964-07-21 Gen Electric Shielding of foil wound electrical apparatus
DE1174421B (de) * 1960-12-13 1964-07-23 Licentia Gmbh Wicklungsanordnung fuer Leistungs-transformatoren hoher Spannung
FR1586642A (fr) * 1968-03-12 1970-02-27
US4318066A (en) * 1980-05-19 1982-03-02 General Electric Company Externally shielded disk windings for transformers
JPS5974612A (ja) * 1982-10-22 1984-04-27 Toshiba Corp 箔巻変圧器
DE3920732C2 (de) * 1989-06-24 1995-08-10 Asea Brown Boveri Elektrisches Induktionsgerät
JPH04348508A (ja) * 1991-05-27 1992-12-03 Toshiba Corp 静止誘導電気機器
US5414612A (en) * 1993-08-03 1995-05-09 Asea Brown Boveri Ab HVDC transmission with a converter connected between an AC voltage and a DC link common to the converters

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3039042A (en) * 1959-02-12 1962-06-12 Moeller Instr Company Shielding of transformers
US3353129A (en) * 1965-10-24 1967-11-14 Gen Electric High voltage electric induction apparatus
US4259654A (en) * 1978-05-02 1981-03-31 Asea Aktiebolag Flux control in tape windings
US4864265A (en) * 1988-10-28 1989-09-05 General Signal Corporation Transient suppressing power transformer

Also Published As

Publication number Publication date
CN1672226A (zh) 2005-09-21
BR0313483A (pt) 2005-06-21
HK1080211B (zh) 2007-12-07
WO2004019351A1 (fr) 2004-03-04
CA2495382A1 (fr) 2004-03-04
DE10238521A1 (de) 2004-03-04
BRPI0313483B1 (pt) 2017-05-30
CA2495382C (fr) 2012-10-23
AU2003264248A1 (en) 2004-03-11
CN1331171C (zh) 2007-08-08
EP1529296A1 (fr) 2005-05-11
HK1080211A1 (en) 2006-04-21
DE10238521B4 (de) 2006-01-19

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