EP0698277A1 - Bobine de self pour tube refroidie par liquide - Google Patents

Bobine de self pour tube refroidie par liquide

Info

Publication number
EP0698277A1
EP0698277A1 EP94911096A EP94911096A EP0698277A1 EP 0698277 A1 EP0698277 A1 EP 0698277A1 EP 94911096 A EP94911096 A EP 94911096A EP 94911096 A EP94911096 A EP 94911096A EP 0698277 A1 EP0698277 A1 EP 0698277A1
Authority
EP
European Patent Office
Prior art keywords
liquid
cooled
choke
winding
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.)
Granted
Application number
EP94911096A
Other languages
German (de)
English (en)
Other versions
EP0698277B1 (fr
Inventor
Tibor Salanki
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 EP0698277A1 publication Critical patent/EP0698277A1/fr
Application granted granted Critical
Publication of EP0698277B1 publication Critical patent/EP0698277B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H01F27/33—Arrangements for noise damping
    • 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
    • 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
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/266—Fastening or mounting the core on casing or support
    • 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
    • H01F27/2876—Cooling
    • 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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/303—Clamping coils, windings or parts thereof together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Definitions

  • the invention relates to a liquid-cooled valve throttle, in particular for a high-voltage direct current transmission system, according to the preamble of claim 1.
  • High-voltage direct current transmission (HVDC) systems are generally used today to distribute electrical energy as a link between two three-phase systems; network-controlled, controllable semiconductors convert the three-phase current on the transmitter side for transmission into direct current and on the receive side back into three-phase current.
  • the highest achievable thyristor voltage is small compared to the valve voltage necessary for economical transmission.
  • a large number of thyristors must therefore be connected in series for an HVDC valve.
  • a valve choke with a liquid-cooled choke coil and choke core is connected in series with the individual thyristors.
  • each HVDC valve consists of a larger or smaller number of identical thyristor and throttle modules, depending on the voltage to be controlled, which are grouped together like a tower in a tower base frame.
  • a valve throttle known according to the preamble is known from WO90 / 14674.
  • the throttle core is surrounded on all sides by a noise-absorbing insulating capsule which also serves as a supporting frame and which, in turn, is wrapped around the outside by the winding of the throttle coil held on the supporting capsule.
  • the choke core is made up of two U-shaped partial cores, in particular cut ribbon cores, and the insulating capsule is in accordance with the U-shaped partial cores are composed of two trouser-shaped insulating partial capsules with their open leg ends opposite one another, the waist-side openings of which can be closed by a lid after the respective insertion of the U-shaped partial cores.
  • a further embodiment of a valve throttle is known from EP 0 223 954 AI, in particular for high-voltage direct current transmission systems.
  • the choke coil is potted on the winding side and the potting block thus formed is mounted in a surrounding plastic stenter via rubber buffers.
  • the choke core consists of two U-shaped partial cores and is also un-potted and fastened in the clamping frame via tie rods. The winding is cooled by using waveguides.
  • the choke core carries cooling pockets on one side for cooling. For noise insulation, the entire arrangement constructed in this way is shielded by an outer insulating jacket, at least some of the connecting or connecting pieces of the coolant supply being located within the insulating jacket.
  • the cores are cooled with the heat sinks attached or wrapped.
  • the heat generated in the cores cannot be dissipated with high efficiency.
  • the core halves are held together with tensioning straps, which are not reliable in the case of large cores, for example throttle cores, in the case of these designs. These straps must therefore be re-tightened from time to time.
  • the invention is based on the object of specifying a liquid-cooled valve throttle which no longer has the disadvantages listed. This object is achieved in connection with the features of the preamble according to the invention by the features specified in the characterizing part of claim 1.
  • this frame By attaching heat sinks to the free surfaces of the clamping frame of the choke core, this frame not only serves as a fastening element of the U-shaped choke partial cores, but also as a heat sink at the same time. Since the choke core has two cooling channels, the assembled choke core can be intensively cooled on two different sides. This heat sink dissipates the heat absorbed by the frame. Since liquid, in particular water, is used as the cooling medium, the heat generated in the partial cores can be dissipated with high efficiency by the liquid.
  • the cores and the winding parts are mounted on a base plate, which has a distribution and a collector tube for the coolant.
  • FIG. 1 shows a side view of a valve throttle according to the invention, the plan view of which is shown in FIG. 2, and a partial throttle core of the inventive valve is shown in FIG. 3
  • Valve throttle shown in Figure 1 shows its side view from the right, and
  • Figure 5 illustrates a sectional view of the insulating encapsulation of a choke partial core.
  • FIG. 1 illustrates a valve throttle according to the invention, in particular for a high-voltage direct current transmission system, which consists of a choke core 2, a choke coil 4, a base plate 6 and some cooling lines 8.
  • the throttle core 2 of this valve throttle consists of two U-shaped throttle partial cores 10, one of which is shown in more detail in FIG.
  • the valve throttle has two throttle cores 2, which are arranged spatially parallel to one another.
  • These choke cores 2 are arranged on the base plate 6 in a self-supporting manner by means of buffers 12, for example vibrating metal buffers or rubber buffers.
  • These buffers 12 serve not only as vibration dampers, but also as fastening means for the choke core 2.
  • the choke sub-cores 10 are each provided with an insulating encapsulation 14, also referred to as a plastic shield, with two insulating encapsulations 14 of a choke core 2 at the ends of each Legs, for example by means of a shrink tube 16, are connected to each other.
  • These cooling lines 8 are connected to the distribution and collection pipes 18 and 20 of the base plate 6, only the distribution pipe 18 being shown in this illustration by means of a broken line.
  • each Pipe 18 and 20 of this base plate 6 is provided with a connection 22, to each of which a cooling line of one level of the HVDC system can be connected.
  • the inductor 4 consists of a primary winding 24, a secondary winding 26 and a secondary resistor 28.
  • the primary winding 24 consists of two winding parts 30 and 32, each of which is wound and potted from a waveguide 34. Coolant flows through these waveguides 34, the winding parts 30 and 32 of the primary winding 24 being connected electrically and in a coolant manner in series.
  • each winding part 30 or 32 of the primary winding 24 comprises a pair of legs of the cores 2 of the valve throttle arranged in parallel.
  • the ends of the waveguide 34 of each winding 30 and 32 are each provided with an electrical connection device 36, 38 and 40, 42.
  • Each connection device 36, 38, 40 and 42 is plate-shaped and provided with a connection 44 for receiving a cooling line 8.
  • each connection device 36, ..., 42 is provided with two threaded bores.
  • the two winding parts 30 and 32 of the primary winding 24 are each detachably connected to the base plate 6 with a plurality of insulating supports 46.
  • the secondary winding 26 consists of only one turn and is accommodated within the winding part 30 of the primary winding 24.
  • the electrical connections 48 and 50 of this secondary winding 26 are led out of the winding part 30.
  • one turn of the secondary winding 26 is not closed.
  • the secondary winding 26 does not consist of a waveguide 24, but can consist of a stranded wire.
  • the secondary resistor 28 is connected electrically in parallel with this secondary winding 26.
  • This secondary resistance 28 is cooled by liquid.
  • a stainless steel tube is provided as the liquid-cooled secondary resistor 28, which is mounted on the plastic shield 14 of the cores 2 of the valve throttle and is laid in a meandering manner according to this figure.
  • the liquid-cooled secondary resistor 28 is connected to the distribution pipe 18 via a cooling line 8 and on the output side likewise via a cooling line 8 to the manifold 20 of the base plate 6.
  • the secondary resistor 28 is electrically conductively connected to the electrical connections 48 and 50 of the secondary winding 26 by means of two connecting pieces 52 and 54. This secondary resistor 28 serves to increase the degree of damping of the valve throttle. As a result, the cores 2 of the choke are relieved, so that not as much power loss in the cores 2 is converted into heat.
  • FIG. 3 shows a U-shaped throttle partial core 10 and FIG. 4 shows its side view from the right in detail.
  • This throttle partial core 10 is provided with a part of a clamping frame 56 which is provided on its free surface 58 with a heat sink 60.
  • the heat sink 60 can also be part of a part of the tensioning frame 56.
  • the heat sink 60 has at least two cooling channels 62 and 64, of which in this
  • cooling channel 62 Only the cooling channel 62 can be seen. On the one hand, these cooling channels 62 and 64 are provided with connections 66 and 68 and, on the other hand, are connected to one another by means of a connecting pipe 70. Stainless steel bolts are provided as the inlet and outlet connections 66 and 68. The one facing away from the thighs
  • the two parts of the tenter frame 56 are attached to the core 2 adjusted and fixed with varnish. This is done in the following way:
  • the frame parts and the core 2 are clamped with releasable fastening elements (not shown) and with fastening screws, so that the frame 56 sits on the core 2 as far as possible (core winding is relatively "soft" after the annealing process).
  • the unit is then soaked in a suitable varnish under vacuum. After the paint has dried out, the fastening elements and the fastening screws are removed and the core is separated into two identical pieces (U-shaped throttle sub-cores 10) (cutting band cores).
  • the heat generated in the partial cores 10 is conducted by heat conduction from the tenter frame 56 to the heat sinks 60, which by
  • the cooling channels 62 and 64 are the two
  • Heat sink 60 each of a choke core 2 by means of
  • Heat sinks 60 of the two choke cores 2 are each connected in series by means of a cooling line 8.
  • FIG. 3 The position of the insulating encapsulation 14 of a choke partial core 10 is indicated in FIG. 3 by means of a broken line.
  • FIG. 5 shows a section through this insulating encapsulation 14, the illustration of the choke partial core 10 being omitted for the sake of clarity.
  • the position of the partial throttle core 10 is only indicated by a broken line.
  • the plastic shield 14 of a choke partial core 10 consists of two parts 76 and 78. These two parts 76 and 78 of the insulating encapsulation 14 are hooked together. Part 78 forms the outer peripheral side wall the insulating encapsulation 14.
  • This plastic shield 14 is held at a distance by elastic spacers 80 from the side walls of the throttle core 10.
  • the noise level of the partial core 10 is damped by means of this plastic shield 14.
  • This configuration provides a liquid-cooled valve throttle, in particular for a high-voltage direct current transmission system, the cores 2 of which are arranged in a self-supporting manner and the heat generated in these cores 2 can be dissipated with high efficiency by means of cooling liquid.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transformer Cooling (AREA)
  • Power Conversion In General (AREA)

Abstract

L'invention concerne une bobine de self pour tube refroidie par liquide, notamment pour une installation de transmission de courant continu haute tension, qui comprend un noyau (2) et une bobine de self (4). La bobine de self (4) comprend un enroulement primaire (24) composé de deux parties d'enroulement (30, 32) refroidies et un enroulement secondaire (26). Le noyau (2) comporte un revêtement plastique. Selon l'invention, le noyau (2) comprend un cadre de serrage (56) dont les surfaces libres (58) comportent un élément de refroidissement (60). Il est prévu une résistance secondaire (28) refroidie par liquide, commutée électriquement en parallèle à l'enroulement secondaire (26). Le noyau (2) entièrement blindé et la bobine de self (4) sont montés sur une plaque de base (6). Ce procédé permet d'obtenir une bobine de self pour tube refroidie de manière intensive.
EP94911096A 1993-05-10 1994-03-31 Bobine de self pour tube refroidie par liquide Expired - Lifetime EP0698277B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE9307081U DE9307081U1 (de) 1993-05-10 1993-05-10 Flüssigkeitsgekühlte Ventildrossel
DE9307081U 1993-10-05
PCT/DE1994/000364 WO1994027304A1 (fr) 1993-05-10 1994-03-31 Bobine de self pour tube refroidie par liquide

Publications (2)

Publication Number Publication Date
EP0698277A1 true EP0698277A1 (fr) 1996-02-28
EP0698277B1 EP0698277B1 (fr) 1996-12-27

Family

ID=6893092

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94911096A Expired - Lifetime EP0698277B1 (fr) 1993-05-10 1994-03-31 Bobine de self pour tube refroidie par liquide

Country Status (5)

Country Link
US (1) US5682292A (fr)
EP (1) EP0698277B1 (fr)
CA (1) CA2162494C (fr)
DE (2) DE9307081U1 (fr)
WO (1) WO1994027304A1 (fr)

Families Citing this family (20)

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Publication number Priority date Publication date Assignee Title
US7002443B2 (en) * 2003-06-25 2006-02-21 Cymer, Inc. Method and apparatus for cooling magnetic circuit elements
FI118397B (fi) * 2004-02-13 2007-10-31 Abb Oy Nestejäähdytetty kuristin
US8284004B2 (en) * 2006-11-29 2012-10-09 Honeywell International Inc. Heat pipe supplemented transformer cooling
CN101373659B (zh) * 2007-08-20 2012-08-22 特变电工股份有限公司 一种电抗器线圈的出线装置及含有该出线装置的铁心电抗器
PL2406798T3 (pl) 2009-03-12 2016-08-31 Abb Schweiz Ag Transformator elektryczny z ulepszonym systemem chłodzenia
FI20105397A (fi) * 2009-07-07 2011-01-08 Jarkko Salomaeki Induktiivisen komponentin nestejäähdytysjärjestely ja menetelmä induktiivisen komponentin valmistamiseksi
DE102011007334A1 (de) * 2011-04-13 2012-10-18 Karl E. Brinkmann GmbH Flüssigkeitsgekühlte induktive Komponente
US8922311B2 (en) * 2012-09-25 2014-12-30 Hamilton Sundstrand Corporation Electrical inductor assembly and method of cooling an electrical inductor assembly
DE102013105120B4 (de) * 2013-05-17 2019-09-26 Reo Inductive Components Ag Elektrische und induktive Bauteile
US9070503B2 (en) * 2013-09-25 2015-06-30 Shun-Fu Technology Corp. Dry type economizer
ES2732210T3 (es) * 2014-03-25 2019-11-21 Vestas Wind Sys As Aparato eléctrico refrigerado por líquido
US9373436B2 (en) * 2014-07-07 2016-06-21 Hamilton Sundstrand Corporation Liquid cooled inductors
TWI620210B (zh) * 2016-08-22 2018-04-01 致茂電子股份有限公司 嵌埋熱傳元件之變壓器
CN113287251A (zh) * 2019-01-10 2021-08-20 三菱重工发动机和增压器株式会社 马达和逆变器一体型旋转电机
CN111768947B (zh) 2019-04-01 2023-03-24 台达电子企业管理（上海）有限公司 变压器及其制造方法
CN111768960B (zh) 2019-04-01 2022-02-18 台达电子企业管理（上海）有限公司 灌封盒以及变压器
CN111768959B (zh) 2019-04-01 2022-03-08 台达电子企业管理（上海）有限公司 变压器
FR3105649B1 (fr) * 2019-12-19 2021-11-26 Valeo Equip Electr Moteur Machine électrique tournante refroidie
US20220242253A1 (en) * 2021-02-02 2022-08-04 Toyota Jidosha Kabushiki Kaisha Electric vehicle
CN116682639B (zh) * 2023-07-03 2023-12-08 河南龙翔电气股份有限公司 隔离变压器的散热结构

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Also Published As

Publication number Publication date
CA2162494C (fr) 2005-01-25
CA2162494A1 (fr) 1994-11-24
DE9307081U1 (de) 1993-07-01
EP0698277B1 (fr) 1996-12-27
WO1994027304A1 (fr) 1994-11-24
DE59401413D1 (de) 1997-02-06
US5682292A (en) 1997-10-28

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