EP2977996A1 - Transducteur d'un convertisseur - Google Patents

Transducteur d'un convertisseur Download PDF

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Publication number
EP2977996A1
EP2977996A1 EP14177832.4A EP14177832A EP2977996A1 EP 2977996 A1 EP2977996 A1 EP 2977996A1 EP 14177832 A EP14177832 A EP 14177832A EP 2977996 A1 EP2977996 A1 EP 2977996A1
Authority
EP
European Patent Office
Prior art keywords
cooling plate
coil
coil winding
cooling
core
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.)
Withdrawn
Application number
EP14177832.4A
Other languages
German (de)
English (en)
Inventor
Hermann Betz
Ingolf Hoffmann
Stephan Ippisch
Manfred Wohlfart
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
Siemens Corp
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, Siemens Corp filed Critical Siemens AG
Priority to EP14177832.4A priority Critical patent/EP2977996A1/fr
Publication of EP2977996A1 publication Critical patent/EP2977996A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H01F27/22—Cooling by heat conduction through solid or powdered fillings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/10—Liquid cooling

Definitions

  • the invention relates to a choke coil of a power converter with a coil winding.
  • inductors By means of inductors, the proportion of comparatively high frequencies is reduced within electrical currents. Such high-frequency currents occur, for example, in converters, wherein the operation of a semiconductor switch leads to comparatively high-frequency harmonics within the switched current. Therefore, such a reactor is incorporated in the high-frequency current-carrying conductors.
  • Reactive coils usually have a low-resistance coil winding with a defined inductance. As a result, the resistance of the choke coil is frequency-dependent, wherein in the absence of a harmonic of the ohmic resistance is comparatively low.
  • the thermal power dissipation generated by the choke coil is not negligible.
  • the invention has for its object to provide a particularly suitable inductor, which can be operated in particular relatively safe and / or by means of a comparatively chemically aggressive cooling medium, and which is preferably suitable for maritime applications.
  • the choke coil is part of a power converter, by means of which preferably a DC voltage is created.
  • the choke coil is located on the DC side of such a converter.
  • the power converter itself is, for example, part of a ship and serves to operate an accessory or an electric motor, by means of which the ship is moved.
  • the electric motor is part of a bow thruster.
  • the choke coil is for example provided and set up to be operated safely at an electrical voltage of more than 500 V, 600 V and up to 1000 V or 2000 V.
  • the current carrying capacity of the choke coil is greater than 100 A, 120 A, 200 A, 300 A, 500 A, 1000 A or 1500 A.
  • the current carrying capacity is less than 180 A, 200 A, 500 A, 1000 A or 2000 A. ,
  • the choke coil has a hollow cylindrical coil winding, which is made for example of an insulated enameled wire.
  • the winding is made of a conductor strip whose width is, for example, less than 10cm, 15cm, 25cm, 35cm, 40cm, 50cm and especially less than 60cm.
  • the width is greater than 1cm, 2cm, 5cm, 10cm, 15cm, 25cm, 30cm, 35cm or 40cm.
  • width is equal to 19 cm.
  • the width here denotes the extension of the strip parallel to the axis of the hollow cylindrical coil winding.
  • the thickness of the band is matched to the corresponding current carrying capacity.
  • the material of the conductor ie in particular the band or the wire, made of a copper or an aluminum, thus containing copper or aluminum.
  • the conductor is either pure copper or aluminum or an alloy containing these elements.
  • the conductor is made of a solid material.
  • the coil winding is wound from an anodized aluminum strip.
  • the coil winding is shaped in the manner of a hollow cylinder, thus consequently extends along an axis and thus has two cover surfaces, also referred to as base surfaces, which are perpendicular to the axis and form the boundary of the coil winding along the axis.
  • the cross section of the coil winding is designed to be annular or in the manner of a rectangle perpendicular to the axis, wherein the corners are preferably rounded, which leads to a reduced material load.
  • the coil winding is formed by means of a single layer of the conductor used for formation, or a plurality of windings are stacked in layers, wherein the individual layers are in particular in direct mechanical contact, resulting in increased stability and reduced size.
  • the choke coil further has a cooling plate, which is thermally connected to one of the top surfaces of the coil winding.
  • the cooling plate is attached to the coil winding.
  • the cooling plate forms a heat sink opposite the coil winding.
  • the cooling plate is arranged perpendicular to the axis of the coil winding and preferably in mechanical contact with the coil winding, which takes place, for example, over the entire surface along the top surface.
  • the cooling plate in turn, for example on the side facing away from the coil winding cooling fins or the like, in order to derive the heat absorbed by the coil winding to an environment.
  • the cooling plate operation of the inductor is possible even at relatively high outside temperatures.
  • it is possible to optimize the coil winding to a comparatively high current carrying capacity whereas an optimization of the cooling plate can be carried out on a comparatively efficient heat dissipation.
  • the cooling plate is made resistant to seawater, so that the Cooling plate can be cooled by means of relatively aggressive seawater, which would otherwise damage the coil winding.
  • the choke coil has a core disposed within the coil winding.
  • the core consists for example of a soft magnetic material and in particular of iron.
  • the core runs along the axis of the hollow-cylindrical coil winding and / or is arranged centrally within the coil winding.
  • spacers are arranged between the core and the coil winding, by means of which a direct mechanical contact between the core and the winding is avoided.
  • the core for example, lies substantially completely against the inner wall of the coil winding, wherein an electrically insulating layer is expediently located between these.
  • the core is also thermally contacted with the cooling plate so that, in use, heat is also transferred from the core to the cooling plate. Due to the use of a core, it is possible to increase the inductance of the choke coil, so that a filtering effect by means of the choke coil is improved.
  • the core has a cuboid shape.
  • the cross section of the core is perpendicular to the axis of the coil winding, wherein the cross section of the coil winding is annular.
  • a material stress of the coil winding in the region of any edges of the core is excluded, which could lead to material fatigue or otherwise damage.
  • the coil winding has a number of layers, air inclusion between individual layers is excluded.
  • the core comprises a cooling tube, through which a fluid is expediently conducted during operation of the choke coil.
  • a cooling liquid is used, which facilitates the heat dissipation.
  • the cooling tube preferably has suitable connections for such a cooling circuit.
  • the cooling tube is made of a stainless steel or CuNiFe.
  • steel of steel grades 4 or upwards is used.
  • the cooling tube is preferably made of austenitic steel 1.4529 or 1.4562 or of super duplex steel 1.4410. In this way, comparatively aggressive cooling liquids, such as seawater, can be used.
  • the cooling tube is straight and shaped in the manner of a hollow cylinder and has, for example, an annular cross-section.
  • the cooling tube is aligned parallel to the axis of the coil winding, which facilitates assembly.
  • the core comprises a core body within which the cooling tube is located.
  • the core body is conveniently made of iron.
  • the core body and the cooling tube are pressed together.
  • the cooling tube is expediently positioned in the center of the core body and in particular point-symmetrically with respect to the axis of the coil winding. In this way, a formation of different temperature levels within the core and / or the coil winding is substantially excluded.
  • the outer contour of the cooling plate corresponds to the outer contour of the coil winding.
  • the cooling plate is aligned with the coil winding, so that the choke coil is comparatively compact.
  • the cross section of the cooling plate is larger than the cross section of the coil winding.
  • the cooling plate is at least on one side of the coil winding. Consequently, the cooling plate has a comparatively large volume, which improves the heat transfer.
  • the cooling plate is recessed to form a recess.
  • the recess is shaped in the manner of a pot and has a bottom. In other words, the cooling plate is at least not fully opened in the region of the depression. Inside the recess the coil winding is at least partially arranged. In this way, the coil winding is stabilized with respect to the cooling plate and the inductor comparatively robust.
  • the cooling plate is electrically isolated from the coil winding.
  • an electrically insulating layer is used for this purpose.
  • a heat-conducting foil which is expediently made from an aromatic polyimide is used as the electrically insulating layer.
  • the die-conducting film consists of an aramid, in particular of an aramid paper.
  • heat-conducting foil is made of NOMEX®.
  • a thermal grease or the like e.g., electrically insulating thermal interface material
  • the heat-conducting foil is formed from a silicone. Consequently, it is possible to make the cooling plate of an electrically conductive material having comparatively good heat conduction properties, excluding an electric short circuit.
  • the cooling plate is made of aluminum, which leads to a reduced weight of the inductor.
  • the cooling plate is made of copper or a copper alloy, which increases the heat conduction properties of the cooling plate.
  • the cooling plate is made of a stainless steel or CuNiFe.
  • steel of steel grades 4 or upwards is used.
  • the cooling plate is preferably made of austenitic steel 1.4529 or 1.4562 or of super duplex steel 1.4410. In this way, a cooling of the cooling plate by means of relatively aggressive media, such as seawater, allows.
  • the cooling plate preferably has a cooling tube, in particular a number of cooling tubes.
  • a cooling tube in particular a number of cooling tubes.
  • the cooling tube is disposed within a body of the cooling plate and preferably compressed within the body, which on the one hand leads to a comparatively efficient thermal connection and on the other hand to a robust mechanical connection between them.
  • the cooling tube is made of stainless steel or CuNiFe, which increases the chemical robustness of the cooling plate. For example, steel of steel grades 4 or upwards is used.
  • the cooling tube is preferably made of austenitic steel 1.4529 or 1.4562 or of super duplex steel 1.4410.
  • seawater is passed as fluid through the cooling tube, if the choke coil is used on a ship or near the coast.
  • the cooling tube is designed straight so that the manufacturing costs of the cooling plate are reduced.
  • the cooling plate is cast with the coil winding.
  • the cooling plate is connected to the coil winding by means of a potting compound, which increases the robustness of the choke coil.
  • the cooling plate is connected by means of a thermally conductive adhesive to the coil winding. During manufacture, pressure is exerted on the cooling plate in the direction of the coil winding until the adhesive or potting compound hardens, which improves the thermal connection.
  • the cooling plate is connected by means of a so-called.
  • Thermal interface material to the coil winding which has a high thermal conductivity, as well as a flexibility, and is made for example of a silicone.
  • the choke coil has a further plate, wherein the coil winding is arranged between this plate and the cooling plate.
  • the two plates are in mechanical contact with the coil winding, either directly or for example via an electrically insulating Layer.
  • the plate is designed as a cooling plate, so that the choke coil has two cooling plates.
  • one of the cooling plates is assigned to exactly one of the two top surfaces of the coil winding. In other words, each of the top surfaces of the coil winding is thermally connected to each one of the cooling plates. As a result, heat dissipation from the coil winding is improved.
  • the two cooling plates are configured identically, thus therefore have the same developments, if they are available.
  • one of the cooling plate is further developed according to one of the training, whereas the other is not developed or designed according to another variant.
  • the choke coil has a second hollow-cylindrical coil winding, which is, for example, similar to the already existing coil winding.
  • the two coil windings are electrically contacted with each other and suitably connected in series.
  • the second cooling plate is arranged, wherein the two coil windings are suitably connected thermally to the second cooling plate. Consequently, the second cooling plate serves to cool the two coil windings.
  • the two coil windings are also mechanically in contact with the second cooling plate and suitably attached thereto. The contact is made, for example, directly or by means of an electrically insulating, but thermally conductive layer.
  • the choke coil comprises the second hollow-cylindrical coil winding, wherein the cooling plate is thermally connected to one of its cover surfaces.
  • the two coil windings are located on the same side of the cooling plate.
  • the two cover surfaces of the respective coil windings are in one plane.
  • the two coil windings run parallel to one another.
  • the two coil windings are of similar construction, and therefore have the same structure and in particular the same dimensions, which reduces storage in the production of the inductance coil.
  • three such coil windings are part of the choke coil, wherein each of the choke coils is associated with a phase of a three-phase current. In this way it is possible to operate by means of the choke coil an electrically commutating electric motor.
  • the coil windings are enclosed by plastic, which leads to reduced costs in the production.
  • the plastic is salt water resistant.
  • the choke coil comprises a distributor for the cooling plates, in particular of a Plastic is made.
  • the individual cooling tubes are supplied with a cooling medium.
  • the distributor is made of a seawater-resistant alloy.
  • Distributor is understood in particular a node of the individual cooling tubes, which serves, for example, the allocation of a coolant flow to the individual cooling tubes or a collection of coolant, which was passed through the individual cooling tubes.
  • each of the coil windings has a core which is in particular magnetically short-circuited by means of a yoke, which is preferably parallel to the cooling plate.
  • the yoke is expediently located on one of the sides of the cooling plate, whereas the coil windings are located on the opposite side.
  • the cooling plate corresponding recesses through which the cores of the core-yoke composite are guided.
  • the cooling plate is free of any recesses and shaped, for example, in the manner of a rectangle.
  • one of the edges of the cooling plate faces the two cores and is suitably in mechanical contact therewith.
  • the cooling plate is thermally connected to the two cores, so that heat is also conducted from the two cores to the cooling plate.
  • the composite of the two cores and the yoke is in one piece, which increases the stability and improves the electrical properties.
  • the composite is preferably U-shaped or, if further coils are present, M-shaped or comb-shaped.
  • each of the coil windings is associated with a cooling plate, wherein the cooling plates are in particular in a plane which is located between the yoke and the coil windings.
  • the cross section of each of the cooling plates is equal to that of the respectively associated coil winding. In this way it is possible to manufacture the composite coil winding and cooling plate before assembly of Kernjochverbunds.
  • each of the cooling plates is configured substantially rectangular, with each of the rectangular shapes is parallel to the respective top surface of the associated coil winding.
  • the cooling plates are suitably arranged perpendicular to the yoke, which stabilizes them.
  • a frictional connection between the yoke and each of the coil windings on the respective cooling plates is created.
  • each of the coil windings associated with two cooling plates which are separated from each other by means of the respective core.
  • a further embodiment of the choke coils of the power converter has a hollow-cylindrical coil winding, which is expediently created from an insulated conductor.
  • the insulated conductor is in particular an enameled wire or a ribbon-shaped conductor, which in particular has a width between 10 cm and 60 cm, and e.g. of 19 cm.
  • the width of the conductor is parallel to the axis of the coil winding.
  • the material of the electrical conductor is, for example, aluminum or copper, and the conductor is wound to the coil winding.
  • the coil winding has one or more layers. Within the coil winding a cuboid core is arranged, which is made in particular of a soft magnetic material and, for example, iron. Suitably, the coil winding is wound from an anodized aluminum strip.
  • the edges of the core located within the coil winding are provided at least in sections by means of L-shaped spacers.
  • each of the edges is at least partially surrounded by one of the spacers.
  • the spacers are made of a plastic, and each of the spacers is preferably in mechanical contact with the coil winding, which in particular has a rectangular cross-section. Due to the spacers, the core is spaced from the coil winding, which on the one hand prevents electrical short circuit and on the other hand prevents damage to the coil winding due to the relatively sharp edges of the core.
  • the choke coil further includes a cooling plate disposed between mutually adjacent spacers.
  • the cooling plate is made substantially rectangular in shape, wherein the cooling plate is thermally contacted with the core and / or the coil winding.
  • the cooling plate is connected to the respective component in direct mechanical contact or by means of an electrically insulating, but thermally conductive layer.
  • the cooling plate is parallel to the core.
  • the cooling plate itself has a cooling tube made of stainless steel or CuNiFe or a CuNiFe alloy.
  • the cooling tube or tubes preferably run parallel to the axis of the coil winding, which facilitates mounting and connection of the cooling tubes, and suitably straight, which reduces the manufacturing cost of the cooling plate.
  • the cooling tubes are pressed in particular within a copper or aluminum body. During operation of the choke coil, a cooling fluid is passed through the cooling tubes and in this way removes heat from the cooling plate. This is due to the choice of materials also allows operation with seawater.
  • FIG. 1 is a sectional view along the axis of a coil winding 2, a choke coil 4 is shown.
  • the coil winding 2 has an annular cross-section perpendicular to its axis and is wound from an electrically insulated copper or aluminum strip, wherein for the preparation of the band is stacked in several layers. Consequently, the coil winding 2 has the form of a roller with a central recess 6.
  • a cylindrical core 8 is arranged with a round base, which is in mechanical contact with the coil winding 2 via an electrical insulating layer 10.
  • the core 8 with respect to the recess 6 via.
  • the core 8 projects out of the recess 6.
  • the core 8 itself has a core body 12 made of soft magnetic iron, which has an annular cross-section.
  • a cooling tube 14 made of CuNiFe is positively positioned.
  • the choke coil 4 further comprises a made of a copper or an aluminum cooling plate 16, whose cross-section perpendicular to the axis of the coil winding 2 is greater than that of the coil winding 2 itself.
  • the cooling plate 16 is cup-shaped and thus has a recess 18 with a bottom 20.
  • a recess 22 is centrally inserted, whose cross section corresponds to the cross section of the core 8, which is arranged therein.
  • the recess 6 of the coil winding 2 and the recess 22 of the cooling plate 16 are aligned, and the core 8 is thermally bonded to the cooling plate 16.
  • the radius of the round recess 18 corresponds to the radius of the coil winding 2, which is arranged in a form-fitting manner within the recess 18.
  • one of the top surfaces 24 of the coil winding 2 is thermally connected to the cooling plate 16, wherein no direct mechanical contact between the cooling plate 16 and the coil winding 2 is present.
  • the recess 18 is namely lined by means of an electrically insulating heat-conducting film 26, so that a short circuit between the coil winding 2 and the cooling plate 16 is excluded even with a defective or incomplete insulation of the conductor of the coil winding 2.
  • the choke coil 4 is part of a power converter, which is in use on a ship.
  • high-frequency components are suppressed within an electric current.
  • the electrical current to be filtered flows through the coil winding 2, the high-frequency components leading to an increase in the electrical resistance due to the resulting magnetic field. This effect is enhanced by means of the core 8.
  • Due to the flowing electric current the temperature of the coil winding 2 increases. This heat is released on the one hand via the heat-conducting foil 26 to the cooling plate 16 and on the other hand, to a reduced extent, via the electrical insulating layer 10 to the core.
  • Seawater is passed through the cooling tube 14, the temperature of which is lower than that of the core 8.
  • the heat of the core 8 is discharged to the seawater, and thus the reactor 4 cooled efficiently. Consequently, it is possible to conduct comparatively large electric currents by means of the choke coil 4 without damaging the coil winding 2.
  • FIG. 2 is a further embodiment of the choke coil 4 shown in the above illustration.
  • the coil winding 2 is made of a made of aluminum, insulated conductor.
  • the core 8 does not have the cooling tube 14.
  • the core body 12 is made of a solid material and forms the Core 8.
  • the connection of the coil winding 2 to the heat sink 16 is again via the heat-conducting film 26, wherein a thermally conductive adhesive is used for fastening.
  • the shape of the cooling plate 16 substantially corresponds to the previous embodiment, but the cooling plate 16 includes a cooling plate body 28 into which a cooling tube 30 is pressed.
  • the straight running cooling tube 30 is made of a stainless steel.
  • FIG. 3 a third embodiment of the choke coil 4 is shown, wherein the core 8 of the second embodiment and the cooling plate 16 of the first embodiment of the choke coil 4 corresponds.
  • the coil winding 2, the electrical insulating layer and the heat conducting film 26 are not changed.
  • the cooling plate 16 itself is made of CuNiFe.
  • the choke coil 4 comprises a further cooling plate 32 whose shape corresponds to the first cooling plate 16.
  • the second cooling plate 32, the recess 18 which is lined with the heat-conducting foil 26.
  • the recess 18 points in the direction of the first cooling plate 16.
  • the coil winding 2 is arranged in a form-fitting manner between the two cooling plates 16, 32 and connected thereto by means of a casting compound (not shown) or by means of an adhesive or a thermal interface material. Also, the material of the second cooling plate 32 corresponds to the first cooling plate 16, and the core 8 protrudes through the second cooling plate 32. Accordingly, during operation of the choke coil 4, both cover surfaces 24 of the hollow cylindrical coil winding 2 are cooled by means of one of the cooling plates 16, 32. Due to the choice of material for the cooling plates 16, 32, they can be flushed or flowed through by seawater without the components of the choke coil 4 being impaired or destroyed.
  • FIG. 4 is a further education of in FIG. 3 shown choke coil 4 having a second coil winding 34, which is electrically connected in series with the first coil windings 2.
  • the two coil windings 2, 34 are identical in this case, ie they do not differ, and correspond in each case to the one in FIG FIG. 3 shown variant.
  • the first cooling plate 16 is not changed.
  • the second cooling plate 32 is modified and now has two recesses 18, which are located on opposite sides and facing away from each other. The shape of each of the recesses 18 corresponds to the recess 18 of the first cooling plate 16.
  • each of the recesses 18 of the second cooling plate 32 which is made of a stainless steel, one of the two coil windings is arranged 2,34, wherein the electrical insulation by means of the heat-conducting 26 between the first coil windings 2 and the second cooling plate 32 is omitted.
  • the remaining top surface of the second coil winding 34 is thermally connected to a third cooling plate 36, which corresponds to the embodiment of the second cooling plate 32, which in FIG. 3 is shown.
  • the arrangement of the second coil winding 34 with respect to the third cooling plate 36 corresponds to the in FIG. 3
  • the core 8 is extended by substantially twice and protrudes through the two coil windings 2,34 and all three cooling plates 16,32,36.
  • the two coil windings 2, 34 and the cooling plates 16, 32, 36 are potted together, which leads to a comparatively stable choke coil 4.
  • FIG. 5 is according to the above illustrations and in FIG. 6 in a plan view, another embodiment of the choke coil 4 is shown.
  • the choke coil 4 comprises the coil winding 2 and the cooling plate 16, whose cross section is modified in each case to a rectangular shape.
  • the connection between the coil winding 2 and the cooling plate 16 is carried out according to the in FIG. 1 shown variant.
  • the choke coil 4 includes the second coil winding 34 and the second cooling plate 32.
  • the second coil winding 34 is similar to the first coil winding 2 and the second cooling plate 32 is made similar to the first cooling plate 16.
  • the connection between the two as well as their respective core 8 do not differ.
  • the two cooling plates 16, 32 lie in one plane, wherein the respective associated coil windings 2, 34 are located on the same side with respect to this plane.
  • the two cooling plates 16, 32 are spaced from each other.
  • the two cooling plates 16,32 and the coil windings 2, 34 do not touch.
  • the two cores 8 are connected by means of a cuboid yoke 38, which rests on the two cores 8 and is made of a soft magnetic iron.
  • the yoke 38 is aligned with the respective edges of the cores arranged perpendicular thereto 8. By means of the yoke 38, a magnetic inference between the two cores 8 is created, which improves the electrical properties of the choke coil 4.
  • FIGS. 7 and 8 is another embodiment of the choke coil 4 according to FIG. 5 or 6 shown.
  • the coil windings 2, 34, the cores 8 and the yoke 38 are left unchanged.
  • the two cooling plates 16, 32 are modified.
  • the first cooling plate 16 is now not square, but designed rectangular, the course is substantially parallel to the yoke 38. In this direction, the cooling plate 16 is extended, so that the cooling plate 16, the two coil windings 2, 34 spans.
  • the cooling plate 16 has two recesses 18, within which one of the coil windings 2, 34 rests and is connected to a thermally conductive adhesive, between each of which the heat-conducting film 26 is arranged.
  • the cooling plate 16 Perpendicular to the yoke 38 and to the cores 8 is the extent of the Cooling plate 16 reduced.
  • the cooling plate 16 is located in this direction only on one side of the two cores 8 and the recess 22 is not present.
  • the second cooling plate 32 is arranged in mirror image to the cooling plate 16, which is configured in the same manner as the first cooling plate 16. Consequently, the two coil windings 2, 34 with the two cooling plates 16, 32 in mechanical contact and thermally connected to each of these.
  • FIG. 9 is another variation of in FIG. 5,6 Shown reactor 4 shown in a plan view.
  • both the first cooling plate 16 and the second cooling plate 32 is changed.
  • the cooling plate 16 is now divided into two parallel legs 16 a, 16 b, which are oriented perpendicular to the cores 8 and the yoke 38.
  • the two legs 16a, 16b are in contact with the associated core 8 and the coil winding 2.
  • the second coil winding 34 facing leg 16b is aligned here in the edge region with the associated coil winding 2, whereas the remaining leg 16a protrudes.
  • the second cooling plate 32 is made in mirror image to the further cooling plate 16. In other words, the second cooling plate 32 has two legs 32a, 32b.
  • FIG. 10 is a plan view of a last embodiment of the choke coil 4 is shown.
  • the choke coil 4 comprises the hollow cylindrical coil winding 2 whose base is square. Within the central recess 6 of the cuboid shaped core 8 is arranged centrally, wherein the core 8 is spaced from the coil winding 2.
  • the mechanical contact between the core 8 and the coil winding 2 is created by means of four spacers 40 whose cross section is perpendicular to the axis of the coil winding 2 each L-shaped.
  • Each of the spacers 40 made of a plastic is arranged in the region of one of the edges 42 of the core 8, which run parallel to the axis of the coil winding 2.
  • each of these edges 42 is replaced by a the four spacers 40 encompassed so that damage to the coil winding 2 due to the relatively sharp edges 42 of the core 8 is excluded.
  • a first cooling plate 16 is arranged in each case, which is cuboid-shaped and oriented parallel to the axis of the coil winding 2.
  • the first cooling plates 16 made of copper are electrically insulated from the coil winding 2 in direct mechanical contact with the core 8 and by means of a thermally conductive layer, not shown here.
  • Each of the first cooling plate 16 has two stainless steel cooling tubes 30 and a body of copper, with the cooling tubes 30 disposed within and compressed with the respective body.
  • seawater is also pumped through the cooling pipes 30, which are likewise running parallel to the axis of the coil winding 2, and in this way heat is removed from the choke coil 4.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP14177832.4A 2014-07-21 2014-07-21 Transducteur d'un convertisseur Withdrawn EP2977996A1 (fr)

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EP14177832.4A EP2977996A1 (fr) 2014-07-21 2014-07-21 Transducteur d'un convertisseur

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Application Number Priority Date Filing Date Title
EP14177832.4A EP2977996A1 (fr) 2014-07-21 2014-07-21 Transducteur d'un convertisseur

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EP2977996A1 true EP2977996A1 (fr) 2016-01-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3288046A1 (fr) 2016-08-25 2018-02-28 Siemens Aktiengesellschaft Dispositif de bobines
CN114450763A (zh) * 2019-10-10 2022-05-06 罗伯特·博世有限公司 共模扼流圈
CN118658702A (zh) * 2024-08-19 2024-09-17 浙江晶科储能有限公司 一种储能变流器及储能装置

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0049382A1 (fr) * 1980-09-25 1982-04-14 Transformatoren Union Aktiengesellschaft Dispositif d'enroulement pour transformateurs à section du noyau quadratique
DE4010178C1 (fr) * 1990-03-30 1991-06-13 Bundy Gmbh, 6900 Heidelberg, De
EP0465700B1 (fr) 1990-07-10 1993-02-24 Siemens Aktiengesellschaft Inductance du type monospire
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EP3288046A1 (fr) 2016-08-25 2018-02-28 Siemens Aktiengesellschaft Dispositif de bobines
WO2018036805A1 (fr) 2016-08-25 2018-03-01 Siemens Aktiengesellschaft Dispositif de bobines
US11443882B2 (en) 2016-08-25 2022-09-13 Siemens Aktiengesellschaft Coil device
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CN118658702A (zh) * 2024-08-19 2024-09-17 浙江晶科储能有限公司 一种储能变流器及储能装置

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