EP2580767A1 - Hochleistungs-glättkondensator mit luftkern - Google Patents

Hochleistungs-glättkondensator mit luftkern

Info

Publication number
EP2580767A1
EP2580767A1 EP11723968.1A EP11723968A EP2580767A1 EP 2580767 A1 EP2580767 A1 EP 2580767A1 EP 11723968 A EP11723968 A EP 11723968A EP 2580767 A1 EP2580767 A1 EP 2580767A1
Authority
EP
European Patent Office
Prior art keywords
windings
induction coil
coil
winding
turns
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
EP11723968.1A
Other languages
English (en)
French (fr)
Other versions
EP2580767B1 (de
Inventor
Joel Devautour
Youssef Ghorbel
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.)
General Electric Technology GmbH
Original Assignee
Alstom Technology 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 Alstom Technology AG filed Critical Alstom Technology AG
Publication of EP2580767A1 publication Critical patent/EP2580767A1/de
Application granted granted Critical
Publication of EP2580767B1 publication Critical patent/EP2580767B1/de
Active 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
    • H01F27/28—Coils; Windings; Conductive connections
    • 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

Definitions

  • the invention relates to air induction coils for high power.
  • Such induction coils are for example used for the power supply of DC arc furnaces.
  • the power supplies of DC arc furnaces use air induction coils with values between 100 ⁇ and 1 mH. These coils can be traversed by currents up to 70 kA.
  • induction coils consisting of monolayer solenoids with a square or hexagonal base.
  • FIG. 1 is an explanatory diagram of an electrical installation for DC arc furnace.
  • Reference 1 designates an arc furnace containing a metallic material 2 to be treated.
  • the oven 1 is equipped, in the example shown, with a cathode 10 and two anodes 11 and 12.
  • Two power supply circuits are shown.
  • a first circuit comprises a thyristor rectifier device 3 whose output is connected between the cathode 10 and the anode 11 through an induction coil Li.
  • circuit comprises a thyristor rectifier device 4 whose output is connected between the cathode 10 and the anode 12 through an induction coil L2.
  • the coils Li and L2 are high-power air coils.
  • the present invention has been realized to optimize the induction coils of high power in order to reduce in particular their bulk and the Joule losses that they cause.
  • the subject of the invention is an air induction coil for high powers formed by winding hollow bars made of electrically conductive material, characterized in that it comprises at least two windings arranged coaxially and one inside the other, the windings being connected in series so as to maintain the same winding direction, the induction coil having a mean radius A, a half-section in a plane comprising the axis of the coil which is square-shaped with a side B, so as to satisfy the relationship: 2A ⁇ 6B ⁇ 6A.
  • the windings consist of polygonal turns, for example hexagonal turns.
  • the hollow bars may be aluminum or copper.
  • each winding can have its own cooling circuit to reduce the losses in load.
  • FIG 1, already described, is an explanatory diagram of an electrical installation for DC arc furnace, according to the prior art
  • FIG 2 is a sectional view of an induction coil, the section being made in a plane comprising the axis of the coil, according to the present invention.
  • the idea underlying the present invention consists in fitting windings (or elementary coils) into each other for build a global reel while trying to get closer to the Brooks model.
  • Brooks model was proposed in 1931 to optimize multilayer coils, based on circular turns, made with wire.
  • the air induction coil of the present invention is made from hollow bars of high section (typically of the order of 20 000 mm 2 ).
  • the optimal shape is the circular shape. This form is not excluded from the present invention, however such a geometry is difficult to achieve with bars of large section.
  • a square shaped coil is simple to make but is not optimal. The hexagon is closer to the circle and not too complex from an industrial point of view. It also has the advantage of reducing the electromagnetic forces in the corners. We could consider spirals of more complicated shapes, such as the octagon for example. However, the manufacturing cost would be higher because of the increased number of welds.
  • the conductive bars used are for example extruded aluminum. One could also use copper, or another electrically conductive material.
  • the bars being hollow, the inside forms channels allowing the circulation of a cooling fluid.
  • the coil according to the invention may have a single cooling circuit common to each winding. However, better results are obtained if each winding has its own cooling circuit. The cooling circuits are then connected in parallel.
  • the winding can be from the top down, or from the inside to the outside, or by another method. The important thing is to keep the same winding direction for the windings.
  • Figure 2 is a sectional view of an induction coil according to the present invention, the section being made in a plane comprising the axis of the coil.
  • the induction coil 20 comprises three coaxial windings: an outer winding 21, a central winding 22 and an inner winding 23.
  • Each winding comprises, in this example, five turns of polygonal shape (by hexagonal example).
  • the half-section 24 of the coil has a height B and a width C. It is located at a mean distance A from the axis of the coil. Shims of electrically insulating material are provided in the coil to support the turns of the windings and to separate the windings from each other.
  • an inductance coil according to the present invention compared to a coil of the prior art consisting of a single solenoid, of the same inductance value and of the same rod section, a reduction of 40% of weight of the reel, 25% less Joule losses and a reduced height of three times.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Induction Heating (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Furnace Details (AREA)
EP11723968.1A 2010-06-10 2011-06-08 Hochleistungs-glättkondensator mit luftkern Active EP2580767B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1054595A FR2961338B1 (fr) 2010-06-10 2010-06-10 Bobine de lissage a air pour fortes puissances
PCT/EP2011/059429 WO2011154422A1 (fr) 2010-06-10 2011-06-08 Bobine de lissage a air pour fortes puissances

Publications (2)

Publication Number Publication Date
EP2580767A1 true EP2580767A1 (de) 2013-04-17
EP2580767B1 EP2580767B1 (de) 2014-04-16

Family

ID=42947531

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11723968.1A Active EP2580767B1 (de) 2010-06-10 2011-06-08 Hochleistungs-glättkondensator mit luftkern

Country Status (6)

Country Link
EP (1) EP2580767B1 (de)
CA (1) CA2801515C (de)
FR (1) FR2961338B1 (de)
UA (1) UA107710C2 (de)
WO (1) WO2011154422A1 (de)
ZA (1) ZA201209170B (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20220084740A1 (en) * 2020-09-14 2022-03-17 Intel Corporation Embedded cooling channel in magnetics

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2939647A1 (de) * 1979-09-29 1981-04-23 Fried. Krupp Gmbh, 4300 Essen Spule zum induktiven schmelzen
JPS57118613A (en) * 1981-01-16 1982-07-23 Kansai Electric Power Co Inc:The Refrigerant cooling equipment for electric machine coil
JPS6012711A (ja) * 1983-07-01 1985-01-23 Takaoka Ind Ltd ウエツトタイプガス絶縁変圧器

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2011154422A1 *

Also Published As

Publication number Publication date
CA2801515C (fr) 2017-11-21
UA107710C2 (uk) 2015-02-10
CA2801515A1 (fr) 2011-12-15
FR2961338A1 (fr) 2011-12-16
FR2961338B1 (fr) 2012-07-27
ZA201209170B (en) 2013-07-31
WO2011154422A1 (fr) 2011-12-15
EP2580767B1 (de) 2014-04-16

Similar Documents

Publication Publication Date Title
EP3275004B1 (de) Dreiphasiger transformator für zwölfphasigen gleichrichter
US10699836B2 (en) Inductor and associated production method
EP2614562B1 (de) Zündkerze für einen verbrennungsmotor
FR2992113A1 (fr) Agencement de cession sans fil d'energie par induction.
EP2580767B1 (de) Hochleistungs-glättkondensator mit luftkern
FR3004024A1 (fr) Dispositif de transmission sans fil d'energie par induction a un recepteur
FR2812122A1 (fr) Transformateurs et circuits de redressement associes pour convertisseurs statiques
FR2511806A1 (fr) Procede pour l'alimentation et la demagnetisation d'electro-aimants a courant continu de grande puissance
EP2422580B1 (de) Heizvorrichtung mit einem leistungsinduktor, leistungsinduktor und damit ausgestatteter ofen
JPWO2015033768A1 (ja) 超伝導ケーブル
EP2027754B1 (de) Hochfrequenzinduktionsheizgerät und mit einer solchen vorrichtung ausgerüsteter induktionsherd
CN204496951U (zh) 一种海底电缆用非磁性耐腐蚀高强度铝合金丝铠装结构
CN105914017A (zh) 用于减小线圈的涡流损耗的变压器
CN2678812Y (zh) 逆变电焊机
CN201886894U (zh) 可调式低压电流互感器
FR2703819A1 (fr) Bobine de réactance multiple compensée en courant, de réalisation compacte.
EP0043523A1 (de) Elektrische Nebenschluss-Drosselspule für elektrische Leistungsübertragung und Verfahren zur Herstellung einer solchen Spule
EP0221921B1 (de) Eisenloser elektromagnet
EP0215043B1 (de) Herstellungsverfahren einer spule für einen elektromagneten
EP2592743B1 (de) Umrichter für elektrischen Stromkreis zur Lieferung von elektrischer Antriebsenergie an Bord eines Kraftfahrzeugs
CN221175927U (zh) 电感器
Del Ferraro et al. Aluminium multi-wire for high-frequency electric machines
FR3058255A1 (fr) Transformateur electrique haute tension a boitier isolant
FR3100374A1 (fr) Bobine comprenant un ensemble de spires conductrices asymétriques
WO2023135159A1 (fr) Utilisation d'un fil de litz pour limiter des surtensions dans une chaîne électromécanique

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20121220

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: DEVAUTOUR, JOEL

Inventor name: GHORBEL, YOUSSEF

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20131129

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 662983

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140515

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602011006238

Country of ref document: DE

Effective date: 20140528

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: BOVARD AG, CH

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: AT

Ref legal event code: MK05

Ref document number: 662983

Country of ref document: AT

Kind code of ref document: T

Effective date: 20140416

REG Reference to a national code

Ref country code: NL

Ref legal event code: VDEP

Effective date: 20140416

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140716

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140717

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140716

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140816

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: AT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140818

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011006238

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: LU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140608

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20150119

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20140608

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 602011006238

Country of ref document: DE

Effective date: 20150119

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20110608

Ref country code: BE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140630

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 8

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20140416

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230522

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230523

Year of fee payment: 13

Ref country code: DE

Payment date: 20230523

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20230523

Year of fee payment: 13

Ref country code: FI

Payment date: 20230523

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230524

Year of fee payment: 13

Ref country code: CH

Payment date: 20230702

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 602011006238

Country of ref document: DE

Representative=s name: KANDLBINDER, MARKUS, DIPL.-PHYS., DE