EP2460168A1 - Arrangement of a stepping switch on a control transformer - Google Patents

Arrangement of a stepping switch on a control transformer

Info

Publication number
EP2460168A1
EP2460168A1 EP10720133A EP10720133A EP2460168A1 EP 2460168 A1 EP2460168 A1 EP 2460168A1 EP 10720133 A EP10720133 A EP 10720133A EP 10720133 A EP10720133 A EP 10720133A EP 2460168 A1 EP2460168 A1 EP 2460168A1
Authority
EP
European Patent Office
Prior art keywords
transformer
tap changer
tap
diverter switch
arrangement
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
Application number
EP10720133A
Other languages
German (de)
French (fr)
Other versions
EP2460168B1 (en
Inventor
Oliver Brueckl
Dieter Dohnal
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.)
Maschinenfabrik Reinhausen GmbH
Scheubeck GmbH and Co
Original Assignee
Maschinenfabrik Reinhausen GmbH
Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG
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 Maschinenfabrik Reinhausen GmbH, Maschinenfabrik Reinhausen Gebrueder Scheubeck GmbH and Co KG filed Critical Maschinenfabrik Reinhausen GmbH
Publication of EP2460168A1 publication Critical patent/EP2460168A1/en
Application granted granted Critical
Publication of EP2460168B1 publication Critical patent/EP2460168B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • H01F27/40—Structural association with built-in electric component, e.g. fuse
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/02—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings
    • H01F29/04—Variable transformers or inductances not covered by group H01F21/00 with tappings on coil or winding; with provision for rearrangement or interconnection of windings having provision for tap-changing without interrupting the load current
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/0005—Tap change devices
    • H01H9/0044—Casings; Mountings; Disposition in transformer housing

Definitions

  • the invention relates to the arrangement of a tap changer, in particular an electronic tap changer, to a control transformer, in particular a distribution transformer.
  • Tap changers are used for uninterrupted switching between winding taps of a control transformer. They have been state of the art for many years and in numerous
  • the laterally mounted tap changer has a separate oil volume.
  • a tap changer with at least one switching resistor and semiconductor switching elements is known, wherein only the tap selector is housed in the oil-filled transformer tank, while the actual load switch with thyristors as semiconductor switching elements in a laterally mounted separate housing is in the air , Of the
  • Overload resistor in turn is arranged in a further lateral separate housing part in air.
  • a disadvantage of the known arrangements of the tap changer in the transformer or the side of the transformer is a required correspondingly wider or longer transformer design. Especially in distribution transformers or local power transformers such a correspondingly wider or longer transformer design, which includes the space for the tap changer, would lead to correspondingly larger compact stations. This is undesirable because larger ones
  • the object of the invention is therefore to provide an arrangement of a tap changer on a
  • control transformer which does not increase the predetermined by the transformer base and overall allows efficient, space-saving and cost-effective integration of the tap changer with a control transformer. This object is achieved by an arrangement having the features of the first claim.
  • the subclaims relate to advantageous developments of the invention.
  • the invention is based on the general idea to provide the tap changer above the iron yoke of the control transformer and thus a total of above or on the control transformer. This is particularly advantageous in compact stations, which usually provide up enough space. Especially with such compact stations the smallest possible space is desired to keep the necessary land acquisition for setting up as low as possible. In contrast, the height of the compact stations installed on the corresponding area does not affect these costs.
  • the complete tap d is located. H. Both the mechanical contact system and the diverter switch, below the
  • the diverter switch as a power electronic
  • Figure 1 shows a first embodiment of an arrangement according to the invention
  • Figure 2 shows a second embodiment of an inventive arrangement.
  • FIG. 1 shows a schematic illustration of a boiler 1 of a regulating transformer, in the interior of which windings 2 and at least one iron yoke 3 are located. Above is the boiler 1 through completed a transformer cover 4. Usually, the complete boiler 1 is filled with oil. Above the transformer cover 4, the MS bushing 5 and the NS bushing 6 are still indicated. The connection to the primary or secondary side of the winding 2 inside the transformer and the electrical connections from the control winding to the tap changer are not shown. Above the iron yoke 3, a tap changer is arranged, which has an electronic diverter switch 7 and below a mechanical contact system 8, the selector.
  • Diverter switch 7 and contact system 8 are hermetically separated by a horizontal lead-through plate 9.
  • the electrical connections of the two parts of the tap changer through the fürf ⁇ hrungsplatte 9 therethrough are not shown again. It can be seen that in this embodiment, the electronic diverter switch 7 is located above the transformer cover 4, while the mechanical contact system 8 is inside the transformer, i. H.
  • FIG 2 shows another embodiment of the invention, in which, deviating from the solution described so far, both electronic diverter switch 7 and mechanical
  • the invention operates in an advantageous manner with an electronic diverter switch, the power electronic

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Regulation Of General Use Transformers (AREA)

Abstract

The invention relates to the arrangement of a stepping switch on a control transformer, wherein either only the mechanical contact system (8) of the stepping switch or also its load changeover switch (7) is or are arranged within the tank (1) of the transformer, under the transformer cover (4) and above the iron yoke (3).

Description

Anordnung eines Stufenschalters an einem Regeltransformator  Arrangement of a tap changer on a control transformer
Die Erfindung betrifft die Anordnung eines Stufenschalters, insbesondere eines elektronischen Stufenschalters, an einem Regeltransformator, insbesondere einem Verteiltransformator. The invention relates to the arrangement of a tap changer, in particular an electronic tap changer, to a control transformer, in particular a distribution transformer.
Stufenschalter dienen zur unterbrechungslosen Umschaltung zwischen Wicklungsanzapfungen eines Regeltransformators. Sie sind seit vielen Jahren Stand der Technik und in zahlreichen Tap changers are used for uninterrupted switching between winding taps of a control transformer. They have been state of the art for many years and in numerous
Ausführungsformen mit mechanischen Kontakten oder Vakuumschaltröhren oder auch Embodiments with mechanical contacts or vacuum interrupters or else
Halbleiterschaltern als Schaltelementen zur Lastumschaltung bekannt. Semiconductor switches known as switching elements for load switching.
Aus der Veröffentlichung„Krämer: On-Load Tap-Changers for Power Transformers", MR-Publication, 2000, Seite 6 sind die unterschiedlichen bekannten Anordnungen eines Stufenschalters am bzw. im Transformator bekannt. Beim sogen.„In-tank-type" (Einbauschalter) befindet sich der Stufenschalter vollständig eingesenkt in den Transformatorkessel seitlich neben den Wicklungen des Transformators und ist von dessen ölvolumen umgeben. Abhängig von der Bauform besitzen der Lastumschalter oder auch der komplette eingelassene Stufenschalter ein separates ölvolumen. From the publication "Kramer: On-Load Tap Changers for Power Transformers", MR Publication, 2000, page 6, the various known arrangements of a tap changer on or in the transformer are known. Built-in switch), the tap-changer is fully immersed in the transformer tank at the side of the windings of the transformer and surrounded by its oil volume. Depending on the design, the diverter switch or the complete recessed tap changer have a separate oil volume.
Beim sogen.„Compartment-type" (Anbauschalter) ist der Stufenschalter seitlich am When so-called. "Compartment-type" (attachment switch), the tap-changer on the side of
Transformatorkessel angeordnet und steht über Durchführungen mit der Regelwicklung in Transformer tank arranged and stands over bushings with the control winding in
Verbindung. Üblicherweise weist der seitlich angebaute Stufenschalter ein separates ölvolumen auf. Aus der DE 101 02 310 C1 ist ein Stufenschalter mit mindestens einem Überschaltwiderstand und Halbleiter-Schaltelementen bekannt, wobei nur der Stufenwähler im ölgefüllten Transformatorkessel untergebracht ist, während der eigentliche Lastumschalter mit Thyristoren als Halbleiterschalt- Elementen in einem seitlich angebauten separaten Gehäuse in Luft sich befindet. Der Connection. Usually, the laterally mounted tap changer has a separate oil volume. From DE 101 02 310 C1, a tap changer with at least one switching resistor and semiconductor switching elements is known, wherein only the tap selector is housed in the oil-filled transformer tank, while the actual load switch with thyristors as semiconductor switching elements in a laterally mounted separate housing is in the air , Of the
Überschaltwiderstand wiederum ist in einem weiteren seitlichen separaten Gehäuseteil in Luft angeordnet. Overload resistor in turn is arranged in a further lateral separate housing part in air.
Nachteilig bei den bekannten Anordnungen des Stufenschalters im Transformator oder seitlich am Transformator ist eine erforderliche entsprechend breitere oder längere Transformatorbauweise. Speziell bei Verteiltransformatoren bzw. Ortsnetztransformatoren würde eine solche entsprechend breitere oder längere Transformatorenbauweise, die den Platz für den Stufenschalter mit umfasst, zu entsprechend größeren Kompaktstationen führen. Dies ist jedoch unerwünscht, da größere A disadvantage of the known arrangements of the tap changer in the transformer or the side of the transformer is a required correspondingly wider or longer transformer design. Especially in distribution transformers or local power transformers such a correspondingly wider or longer transformer design, which includes the space for the tap changer, would lead to correspondingly larger compact stations. This is undesirable because larger ones
Kompaktstationen entsprechend teuer sind und vor allem auch mehr Aufstellplatz beanspruchen. Compact stations are correspondingly expensive and above all require more space.
Aufgabe der Erfindung ist es daher, eine Anordnung eines Stufenschalters an einem The object of the invention is therefore to provide an arrangement of a tap changer on a
Regeltransformator vorzusehen, die die durch den Transformator vorgegebene Grundfläche nicht vergrößert und insgesamt eine effiziente, raumsparende und kostengünstige Integration des Stufenschalters mit einem Regeltransformator gestattet. Diese Aufgabe wird durch eine Anordnung mit den Merkmalen des ersten Patentanspruches gelöst. Die Unteransprüche betreffen vorteilhafte Weiterbildungen der Erfindung. Provide control transformer, which does not increase the predetermined by the transformer base and overall allows efficient, space-saving and cost-effective integration of the tap changer with a control transformer. This object is achieved by an arrangement having the features of the first claim. The subclaims relate to advantageous developments of the invention.
Der Erfindung liegt die allgemeine Idee zugrunde, den Stufenschalter oberhalb des Eisenjochs des Regeltransformators und damit insgesamt oberhalb am oder im Regeltransformator vorzusehen. Dies ist besonders vorteilhaft bei Kompaktstationen, die in der Regel nach oben genügend Platz bieten. Besonders bei solchen Kompaktstationen ist ein möglichst geringer Aufstellplatz gewünscht, um den notwendigen Grunderwerb für das Aufstellen so gering als möglich zu halten. Die Höhe der auf der entsprechenden Fläche installierten Kompaktstationen hingegen beeinflusst diese Kosten nicht. The invention is based on the general idea to provide the tap changer above the iron yoke of the control transformer and thus a total of above or on the control transformer. This is particularly advantageous in compact stations, which usually provide up enough space. Especially with such compact stations the smallest possible space is desired to keep the necessary land acquisition for setting up as low as possible. In contrast, the height of the compact stations installed on the corresponding area does not affect these costs.
Nach einer ersten Ausführungsform der Erfindung befindet sich das mechanische Kontaktsystem desAccording to a first embodiment of the invention, the mechanical contact system of the
Stufenschalters unterhalb des Transformatordeckels und damit innerhalb des Transformators, der eigentliche Lastumschalter hingegen oberhalb des Transformatordeckels und damit außerhalb desTap changer below the transformer cover and thus within the transformer, the actual diverter switch, however, above the transformer cover and thus outside of the
Transformators. Transformer.
Gemäß einer weiteren Ausführungsform der Erfindung befindet sich der komplette Stufenschalter d. h. sowohl das mechanische Kontaktsystem als auch der Lastumschalter, unterhalb des  According to a further embodiment of the invention, the complete tap d is located. H. Both the mechanical contact system and the diverter switch, below the
Transformatordeckels und damit innerhalb des Transformators.  Transformer lid and thus within the transformer.
Besonders vorteilhaft ist es, das mechanische Kontaktsystem und den Lastumschalter durch eine isolierende Durchführungsplatte voneinander zu trennen.  It is particularly advantageous to separate the mechanical contact system and the diverter switch from one another by means of an insulating lead-through plate.
Weiterhin vorteilhaft ist es, im Rahmen der Erfindung den Lastumschalter als leistungselektronischen It is also advantageous in the context of the invention, the diverter switch as a power electronic
Lastumschalter mit elektronischen Schaltmitteln wie Thyristoren oder IGBTs vorzusehen. To provide diverter switch with electronic switching means such as thyristors or IGBTs.
Bei einer Ausführungsform mit einem solchen leistungselektronischen Lastumschalter und einer In one embodiment with such a power electronic diverter switch and a
Trennung vom mechanischen Kontaktsystem durch die erwähnte isolierende Durchführungsplatte können damit die elektronischen Bauelemente in Luft, das mechanische Kontaktsystem hingegen in öl betrieben werden - ihren bevorzugten Umgebungsmedien. Separation from the mechanical contact system by the aforementioned insulating bushing can thus the electronic components in air, the mechanical contact system, however, are operated in oil - their preferred environment media.
Auf besonders vorteilhafte Weise ist ein separater Deckel vorgesehen, so dass der  In a particularly advantageous manner, a separate lid is provided, so that the
leistungselektronische Lastumschalter ohne weiteres separat von oben zugänglich ist. power electronic diverter switch is easily accessible separately from above.
Die Erfindung soll nachfolgend an Hand von Ausführungsbeispielen näher erläutert werden. Es zeigen: The invention will be explained in more detail with reference to exemplary embodiments. Show it:
Figur 1 eine erste Ausführungsform einer erfindungsgemäßen Anordnung Figure 1 shows a first embodiment of an arrangement according to the invention
Figur 2 eine zweite Ausführungsform einer erfindungsgemäßen Anordnung.  Figure 2 shows a second embodiment of an inventive arrangement.
In Figur 1 ist in schematischer Darstellung ein Kessel 1 eines Regeltransformators gezeigt, in dessen Innerem sich Wicklungen 2 und mindestens ein Eisenjoch 3 befinden. Oben ist der Kessel 1 durch einen Transformatordeckel 4 abgeschlossen. Üblicherweise ist der komplette Kessel 1 ölgefüllt. Oberhalb des Transformatordeckels 4 sind noch die MS-Durchführung 5 und die NS-Durchführung 6 angedeutet. Die Verbindung zu der Primär- bzw. Sekundärseite der Wicklung 2 im Inneren des Transformators und die elektrischen Verbindungen von der Regelwicklung zum Stufenschalter sind nicht gezeigt. Oberhalb des Eisenjoches 3 ist ein Stufenschalter angeordnet, der einen elektronischen Lastumschalter 7 und darunter ein mechanisches Kontaktsystem 8, den Wähler, aufweist. FIG. 1 shows a schematic illustration of a boiler 1 of a regulating transformer, in the interior of which windings 2 and at least one iron yoke 3 are located. Above is the boiler 1 through completed a transformer cover 4. Usually, the complete boiler 1 is filled with oil. Above the transformer cover 4, the MS bushing 5 and the NS bushing 6 are still indicated. The connection to the primary or secondary side of the winding 2 inside the transformer and the electrical connections from the control winding to the tap changer are not shown. Above the iron yoke 3, a tap changer is arranged, which has an electronic diverter switch 7 and below a mechanical contact system 8, the selector.
Lastumschalter 7 und Kontaktsystem 8 sind durch eine horizontale Durchführungsplatte 9 hermetisch voneinander getrennt. Die elektrischen Verbindungen von den beiden Teilen des Stufenschalters durch die Durchfϋhrungsplatte 9 hindurch sind wiederum nicht dargestellt. Das Gehäuse des Stufenschalters besitzt oben einen separat zu öffnenden Deckel 10. Es ist zu sehen, dass bei dieser Ausführungsform sich der elektronische Lastumschalter 7 oberhalb des Transformatordeckels 4 befindet, während das mechanische Kontaktsystem 8 sich innerhalb des Transformators, d. h. Diverter switch 7 and contact system 8 are hermetically separated by a horizontal lead-through plate 9. The electrical connections of the two parts of the tap changer through the Durchfϋhrungsplatte 9 therethrough are not shown again. It can be seen that in this embodiment, the electronic diverter switch 7 is located above the transformer cover 4, while the mechanical contact system 8 is inside the transformer, i. H.
unterhalb des Transformatordeckels 4 befindet. located below the transformer cover 4.
Figur 2 zeigt eine weitere Ausführungsform der Erfindung, bei der, abweichend von der bisher beschriebenen Lösung, sowohl elektronischer Lastumschalter 7 als auch mechanisches Figure 2 shows another embodiment of the invention, in which, deviating from the solution described so far, both electronic diverter switch 7 and mechanical
Kontaktsystem 8 unterhalb des Transformatordeckels 4 und damit im Kessel 1 angeordnet sind. Contact system 8 below the transformer cover 4 and thus arranged in the boiler 1.
Bei beiden Ausführungsformen ist durch die Anordnung des Stufenschalters oberhalb des Eisenjochs 3 sichergestellt, dass die benötigte Grundfläche für die Anordnung ausschließlich durch die In both embodiments, it is ensured by the arrangement of the tap changer above the iron yoke 3, that the required base area for the arrangement exclusively by the
Dimensionierung der Wicklung 2 und sich daraus ergebende Größe des Kessels 1 festgelegt ist. Der Stufenschalter hingegen benötigt erfindungsgemäß keine zusätzliche Aufstellfläche. Dimensioning of the winding 2 and the resulting size of the boiler 1 is fixed. The tap changer, however, requires according to the invention no additional footprint.
Wie bereits erläutert, ist dieser Vorteil der minimierten Aufstellfläche besonders für As already explained, this advantage of the minimized footprint is particularly for
Verteiltransformatoren in entsprechenden Kompaktstationen bedeutsam. Die Erfindung arbeitet auf vorteilhafte Weise mit einem elektronischen Lastumschalter, der leistungselektronische Distribution transformers in corresponding compact stations significant. The invention operates in an advantageous manner with an electronic diverter switch, the power electronic
Schaltelemente aufweist. Has switching elements.

Claims

Patentansprüche claims
1. Anordnung eines Stufenschalters an einem Regeltransformator, 1. Arrangement of a tap changer on a regulating transformer,
wobei der Stufenschalter ein mechanisches Kontaktsystem zur Wahl einer Anzapfung einer wherein the tap changer is a mechanical contact system for selecting a tap
Regelwicklung des Regeltransformators sowie einen Lastumschalter zur eigentlichen Control winding of the control transformer and a diverter switch to the actual
Lastumschaltung aufweist,  Has load switching,
wobei der Regeltransformator einen ölgefüllten Kessel aufweist, in dem sich mindestens ein wherein the control transformer has an oil-filled boiler in which at least one
Eisenjoch und Wicklungen befinden Iron yoke and windings are located
und wobei der Kessel oben durch einen Transformatordeckel abgeschlossen ist,  and wherein the boiler is closed at the top by a transformer cover,
dadurch gekennzeichnet,  characterized,
dass das mechanische Kontaktsystem (8) des Stufenschalters innerhalb des Kessels (1 ) unterhalb des Transformatordeckels (4) und oberhalb des Eisenjochs (3) angeordnet ist.  the mechanical contact system (8) of the tap changer is arranged inside the boiler (1) below the transformer cover (4) and above the iron yoke (3).
2. Anordnung nach Anspruch 1 , 2. Arrangement according to claim 1,
dadurch gekennzeichnet,  characterized,
dass auch der Lastumschalter (7) des Stufenschalters innerhalb des Kessels (1) unterhalb des Transformatordeckels (4) und oberhalb des Eisenjochs (3) angeordnet ist.  that also the diverter switch (7) of the tap changer is arranged inside the boiler (1) below the transformer cover (4) and above the iron yoke (3).
3. Anordnung nach Anspruch 1 oder 2, 3. Arrangement according to claim 1 or 2,
dadurch gekennzeichnet,  characterized,
dass Lastumschalter (7) und mechanisches Kontaktsystem (8) des Stufenschalters durch eine horizontale Durchführungsplatte (9) voneinander getrennt sind.  in that the diverter switch (7) and the mechanical contact system (8) of the on-load tap-changer are separated from each other by a horizontal lead-through plate (9).
4. Anordnung nach einem der Ansprüche 1 bis 3, 4. Arrangement according to one of claims 1 to 3,
dadurch gekennzeichnet,  characterized,
dass das Gehäuse des Stufenschalters oben einen separat zu öffnenden Deckel (10) aufweist.  that the housing of the tap changer at the top has a separately openable lid (10).
5. Anordnung nach einem der Ansprüche 1 bis 4, 5. Arrangement according to one of claims 1 to 4,
dadurch gekennzeichnet,  characterized,
dass der Lastumschalter (7) des Stufenschalters leistungselektronische Schaltmittel, insbesondere Thyristoren oder IGBTs, zur unterbrechungslosen Lastumschaltung besitzt.  in that the diverter switch (7) of the tap changer has electronic power switching means, in particular thyristors or IGBTs, for uninterruptible load switching.
6. Anordnung nach einem der Ansprüche 1 bis 5, 6. Arrangement according to one of claims 1 to 5,
dadurch gekennzeichnet,  characterized,
dass der Regeltransformator ein Ortsnetztransformator bzw. ein verbrauchernaher  that the control transformer is a local power transformer or a consumer closer
Verteiltransformator ist.  Distribution transformer is.
EP10720133.7A 2009-07-30 2010-05-08 Arrangement comprising a stepping switch and a control transformer Not-in-force EP2460168B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009035699A DE102009035699A1 (en) 2009-07-30 2009-07-30 Arrangement of a tap changer on a control transformer
PCT/EP2010/002820 WO2011012181A1 (en) 2009-07-30 2010-05-08 Arrangement of a stepping switch on a control transformer

Publications (2)

Publication Number Publication Date
EP2460168A1 true EP2460168A1 (en) 2012-06-06
EP2460168B1 EP2460168B1 (en) 2014-09-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP10720133.7A Not-in-force EP2460168B1 (en) 2009-07-30 2010-05-08 Arrangement comprising a stepping switch and a control transformer

Country Status (8)

Country Link
US (1) US8648587B2 (en)
EP (1) EP2460168B1 (en)
JP (1) JP2013500594A (en)
KR (1) KR20120050435A (en)
CN (1) CN102473540B (en)
DE (1) DE102009035699A1 (en)
HK (1) HK1168194A1 (en)
WO (1) WO2011012181A1 (en)

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CN102473540A (en) 2012-05-23
US8648587B2 (en) 2014-02-11
JP2013500594A (en) 2013-01-07
WO2011012181A1 (en) 2011-02-03
EP2460168B1 (en) 2014-09-10
DE102009035699A1 (en) 2011-02-10
CN102473540B (en) 2015-02-04
KR20120050435A (en) 2012-05-18
HK1168194A1 (en) 2012-12-21
US20120112730A1 (en) 2012-05-10

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