EP2182533B1 - Transformator - Google Patents

Transformator Download PDF

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Publication number
EP2182533B1
EP2182533B1 EP08018770A EP08018770A EP2182533B1 EP 2182533 B1 EP2182533 B1 EP 2182533B1 EP 08018770 A EP08018770 A EP 08018770A EP 08018770 A EP08018770 A EP 08018770A EP 2182533 B1 EP2182533 B1 EP 2182533B1
Authority
EP
European Patent Office
Prior art keywords
windings
winding
voltage
lines
low
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.)
Active
Application number
EP08018770A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2182533A1 (de
Inventor
Karl-Heinz Zillmann
Wolfgang Mönig
Benjamin Weber
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.)
ABB Technology AG
Original Assignee
ABB 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
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Application filed by ABB Technology AG filed Critical ABB Technology AG
Priority to EP08018770A priority Critical patent/EP2182533B1/de
Priority to AT08018770T priority patent/ATE537541T1/de
Priority to ES08018770T priority patent/ES2378712T3/es
Priority to PL08018770T priority patent/PL2182533T3/pl
Priority to RU2011121676/07A priority patent/RU2509387C2/ru
Priority to CA2740908A priority patent/CA2740908C/en
Priority to PCT/EP2009/006785 priority patent/WO2010049041A1/de
Priority to KR1020117008296A priority patent/KR101555962B1/ko
Priority to BRPI0919623-4A priority patent/BRPI0919623B1/pt
Priority to JP2011533555A priority patent/JP2012507161A/ja
Priority to CN2009801437681A priority patent/CN102197447B/zh
Priority to UAA201105416A priority patent/UA100778C2/uk
Publication of EP2182533A1 publication Critical patent/EP2182533A1/de
Priority to US13/095,360 priority patent/US8344840B2/en
Publication of EP2182533B1 publication Critical patent/EP2182533B1/de
Application granted granted Critical
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F30/00—Fixed transformers not covered by group H01F19/00
    • H01F30/06—Fixed transformers not covered by group H01F19/00 characterised by the structure
    • H01F30/12—Two-phase, three-phase or polyphase transformers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/04—Arrangements of electric connections to coils, e.g. leads

Definitions

  • the invention relates to a transformer having at least one core leg, on which three windings are arranged axially next to each other, whose derivatives are each led out isolated from each other.
  • Transformers which are required for power converters, ie DC or inverter, each have a plurality of undervoltage and high-voltage winding existing windings, by means of which the respective two- or three-phase AC voltage is transformed to the desired voltage level.
  • Such a rectified current regularly has a residual ripple, that is, a remaining AC component of a smoothed or regulated supply voltage after it has been rectified by a rectifier and smoothed by a capacitor and / or down regulated by a voltage regulator to a lower level.
  • 12-, 18- and 24-phase rectifier circuits are often used. This often eliminates a smoothing capacitor completely.
  • Another big advantage is the almost sinusoidal input current and the resulting low mains / transformer load with distortion reactive power.
  • a disadvantage is the complicated transformer to be wound, the secondary has a triangular and a star winding, each with the same pole voltage. This arrangement results in a phase shift of 30 ° with 12 phases. For a phase shift of 20 ° with 18 phases or 15 ° with 24 phases, two adjacent phases must be added accordingly, whereby the required Transformer is still consuming, since for each phase in each case a complete winding, that is, low and high voltage winding, is required with separate derivative.
  • a transformer for a three-phase inverter having a three-part primary winding and a nine-part secondary winding has become known, wherein the primary winding is designed such that a distortion of the primary current is reduced.
  • a transformer with three single-phase transformers in three-phase configuration for powering a three phase recirculating-current drive converter with a twelve-pulse bridge arrangement, where each of the single-phase transformers has a two-arm Core and the primary windings and the secondary windings are wound on at least one of the legs of the two-legged core, so that the transformer core is constantly excited by a twelve-fold pulse and the total volume of the primary turns is reduced.
  • each winding is formed by a core near low-voltage winding, which is wrapped in each case by an associated high-voltage winding, that the axial distance of the windings is minimized to each other and that the leads of the low-voltage windings are led out axially.
  • the derivatives of the high-voltage windings can always be guided in the radial direction to the outside.
  • the inventively provided solution of the problem of space is thus achieved by reducing the axial distance from each other by three side by side each arranged on a core leg windings to a minimum, which is determined by the required insulation distance of the windings and the resulting mutual influence due to electrical repercussions.
  • the derivatives of the low-voltage windings are led out on one side parallel to the core leg, that is, all electrical connections of the low-voltage windings are arranged on one side of the thus designed transformer.
  • This embodiment is particularly suitable when sufficient space is available.
  • the circular winding shape is preferred.
  • impurities on the circumference which in the externally wound thereon high-voltage windings inevitably lead to local deviations from the circular shape, for example to egg-shaped winding cross-sections.
  • the derivatives of the low-voltage windings are led out to each other by 120 ° circumferentially offset parallel to the core leg. As a result, at least approximately equalization of the winding circumference is achieved. At the same time the risk of possible mutual electrical interference can be significantly reduced by the spatial distribution of the derivatives of the different low-voltage windings on the periphery.
  • a rectangular shape or an oval shape may also be used for the design of the coil cross section. In this case, however, attention is always paid to an as uniform as possible winding geometry in an advantageous manner.
  • each complete winding that is, consisting of undervoltage and high-voltage winding
  • the embodiment according to the invention in the area between the partial windings, that is between the undervoltage and the high-voltage winding, evenly over distributed around the scope to arrange shell-like spacers made of insulating material.
  • these spacers are used to fill the space not occupied by a winding derivation and thus to compensate for any deviation of the winding from the desired uniform shape and so not to let unwanted deviations even arise. Accordingly, the thickness of these insulating shells is such that it corresponds approximately to the thickness of a derivative.
  • each of the arranged between the windings cup-shaped spacers in the circumferential direction has a width such that in each case a gap remains between circumferentially adjacent spacer shells, in which the relevant discharge can be inserted.
  • a spacer shell extends at most as far beyond the circumference that results in, for example, three spacer shells an uncovered residual surface whose width corresponds to that of three discharges.
  • these insulating shells can be modular or modular designed, so that when producing a winding, the respective position of the respective derivative is already specified.
  • the respective position of the respective derivative is already specified.
  • the spaces provided in each case are aligned with the associated spaces between the adjacent windings.
  • a gas for example air or other fluid flows as coolant or circulates.
  • the complete windings that is to say the windings formed from undervoltage and high-voltage winding together with the insulation of the leads with synthetic resin, so that after completion of the complete winding no damage or impairment of the individual windings to get are.
  • the transformer according to the invention may have three or more core legs each provided with three or more, for example four, juxtaposed undervoltage windings and high-voltage windings wound thereon, the ends of which are each connected by means of yokes. It proves to be advantageous to arrange the individual core legs side by side in a common plane.
  • the leads are also led out to the side, as already explained above, on the circumference of the respective undervoltage winding, either only to one side or, for example, symmetrically on both sides.
  • a transformer 10 for example for DC or inverter use, is shown diagrammatically from the side formed with a conventional arrangement of prior art windings 1 to 9, in which three windings 12 are juxtaposed are arranged on a common core leg 22.
  • a total of three core legs 22 are provided, which are each wrapped with the numbers 1 to 9 windings 12 wrapped.
  • the windings 12 each consist of a low-voltage winding 14 and a high voltage winding 16 adjoining this radially.
  • the core structure of the transformer is the in Fig. 1 shown example of the prior art of three mutually parallel core limbs 22, at the ends of each a continuous yoke 24 closes the magnetic circuit.
  • windings 12 Each arranged on a core leg 22 windings 12 have such a distance from each other that sufficient insulation for the radial between led out leads 20 of the lower voltage windings 14 is ensured.
  • the leads 18 of the high-voltage windings 16 are also led out radially on the outer circumference of each winding 12.
  • the in Fig. 2 shown transformer 11 is also provided for use for DC and / or inverter and accordingly also has a total of nine windings 32, which also, that is, in the same manner as in Fig. 1 shown transformer 10, marked with numbers from 1 to 9.
  • Each of the three juxtaposed windings 32 consists of a low-voltage winding 34 and a radially outwardly wound thereon high-voltage winding 36, which are penetrated centrally by a core leg 22, which is mechanically connected at both ends with a yoke 24 and thus closes the magnetic circuit.
  • the leads 28 of the high-voltage winding 36 are each guided radially outward, while the leads 30 of the low-voltage winding 34 each at its periphery axially, that is parallel to its winding axis or parallel to the extension direction of the core leg 22 of the transformer 11, in the area between the Low-voltage winding 34 and the high-voltage winding 36 are each led out to one side.
  • Fig. 3 is a sectional view of the cross section of a winding 32 along section line A -A in Fig. 2 shown, in which the aforementioned area between the low-voltage winding 34 and the high-voltage winding 36 can be seen as an annular gap 35.
  • annular gap 35 area in which the leads 30 are led out is already for reasons of electrical isolation of the two sub-windings, namely the low-voltage winding 34 and the high-voltage winding 36, which are at different voltage levels required.
  • the leads 30 must also be insulated from the other windings 32. This leads to a height of the annular gap 35 of at least 20 mm, in which run the discharge lines 30 and which is otherwise filled with insulating material as a spacer 38.
  • the lateral spacing of the windings 32 to each other due to the inventive arrangement of the leads 30 axially parallel to the winding axis or to the longitudinal axis of the core leg 22 can be significantly reduced, which compared to conventional transformers 10 in the prior art, a significantly smaller width of the invention Transformers 11 has the same performance data result.
  • Fig. 3 is, as already mentioned, a sectional view through a winding 32 along in FIG Fig. 2 given section line A - A reproduced. It shows around a central core 22, first an undervoltage winding 34. This is followed by the already mentioned as annular gap 35 area, in which the axially extending leads 30 of the lower voltage windings 34 are arranged at an angular offset of about 120 ° relative to the circumference.
  • spacers 38 are provided in the annular gap, which serve to electrically separate the low-voltage winding 34 and the high-voltage winding 35 from each other and to obtain the circular shape of the winding 32.
  • axially extending channels 40 are arranged for cooling fluid in the annular gap 35, which flows through it and thereby absorbs the heat resulting from the current load of the windings 32.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Steroid Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Transformers For Measuring Instruments (AREA)
  • Coils Or Transformers For Communication (AREA)
EP08018770A 2008-10-28 2008-10-28 Transformator Active EP2182533B1 (de)

Priority Applications (13)

Application Number Priority Date Filing Date Title
EP08018770A EP2182533B1 (de) 2008-10-28 2008-10-28 Transformator
AT08018770T ATE537541T1 (de) 2008-10-28 2008-10-28 Transformator
ES08018770T ES2378712T3 (es) 2008-10-28 2008-10-28 Transformador
PL08018770T PL2182533T3 (pl) 2008-10-28 2008-10-28 Transformator
BRPI0919623-4A BRPI0919623B1 (pt) 2008-10-28 2009-09-19 Transformador de múltiplos enrolamentos para uso em circuitos conversores de energia
UAA201105416A UA100778C2 (uk) 2008-10-28 2009-09-19 Трансформатор
PCT/EP2009/006785 WO2010049041A1 (de) 2008-10-28 2009-09-19 Transformator
KR1020117008296A KR101555962B1 (ko) 2008-10-28 2009-09-19 변압기
RU2011121676/07A RU2509387C2 (ru) 2008-10-28 2009-09-19 Трансформатор
JP2011533555A JP2012507161A (ja) 2008-10-28 2009-09-19 変圧器
CN2009801437681A CN102197447B (zh) 2008-10-28 2009-09-19 变压器
CA2740908A CA2740908C (en) 2008-10-28 2009-09-19 Transformer
US13/095,360 US8344840B2 (en) 2008-10-28 2011-04-27 Transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP08018770A EP2182533B1 (de) 2008-10-28 2008-10-28 Transformator

Publications (2)

Publication Number Publication Date
EP2182533A1 EP2182533A1 (de) 2010-05-05
EP2182533B1 true EP2182533B1 (de) 2011-12-14

Family

ID=40383541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08018770A Active EP2182533B1 (de) 2008-10-28 2008-10-28 Transformator

Country Status (13)

Country Link
US (1) US8344840B2 (zh)
EP (1) EP2182533B1 (zh)
JP (1) JP2012507161A (zh)
KR (1) KR101555962B1 (zh)
CN (1) CN102197447B (zh)
AT (1) ATE537541T1 (zh)
BR (1) BRPI0919623B1 (zh)
CA (1) CA2740908C (zh)
ES (1) ES2378712T3 (zh)
PL (1) PL2182533T3 (zh)
RU (1) RU2509387C2 (zh)
UA (1) UA100778C2 (zh)
WO (1) WO2010049041A1 (zh)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN205028760U (zh) * 2015-08-28 2016-02-10 光宝科技股份有限公司 多绕组变压器

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3579165A (en) * 1969-09-24 1971-05-18 Gen Electric Winding connection for single phase two leg electric transformer
SU877633A1 (ru) * 1980-02-25 1981-10-30 Предприятие П/Я М-5111 Трансформатор
SU1086469A2 (ru) * 1983-01-28 1984-04-15 Производственное Объединение "Уралэлектротяжмаш" Им.В.И.Ленина Преобразовательный трансформатор
US5182535A (en) 1989-12-19 1993-01-26 Dhyanchand P John Summing transformer core for star-delta inverter having a separate secondary winding for each primary winding
US5177460A (en) * 1990-01-04 1993-01-05 Dhyanchand P John Summing transformer for star-delta inverter having a single secondary winding for each group of primary windings
US5355296A (en) * 1992-12-10 1994-10-11 Sundstrand Corporation Switching converter and summing transformer for use therein
JP2000133533A (ja) 1998-10-28 2000-05-12 Toshiba Corp サイクロコンバータ用変圧器
JP2000243636A (ja) 1999-02-24 2000-09-08 Toshiba Corp 三相マルチレベルインバータ用変圧器
CN2679812Y (zh) * 2004-02-19 2005-02-16 鞍山市华冶动力设备有限公司 六分裂干式移相整流变压器
KR200386286Y1 (ko) 2005-03-14 2005-06-10 부전전자부품 주식회사 고전압 트랜스포머
CN201060727Y (zh) * 2007-06-12 2008-05-14 锦州万仕特种变压器有限公司 分裂式整流变压器

Also Published As

Publication number Publication date
KR101555962B1 (ko) 2015-09-30
ES2378712T3 (es) 2012-04-17
US8344840B2 (en) 2013-01-01
RU2509387C2 (ru) 2014-03-10
CN102197447B (zh) 2013-09-18
BRPI0919623B1 (pt) 2023-12-26
JP2012507161A (ja) 2012-03-22
CN102197447A (zh) 2011-09-21
RU2011121676A (ru) 2012-12-10
US20110221556A1 (en) 2011-09-15
WO2010049041A1 (de) 2010-05-06
BRPI0919623A8 (pt) 2022-12-13
KR20110081192A (ko) 2011-07-13
PL2182533T3 (pl) 2012-05-31
UA100778C2 (uk) 2013-01-25
CA2740908C (en) 2015-12-29
EP2182533A1 (de) 2010-05-05
CA2740908A1 (en) 2010-05-06
ATE537541T1 (de) 2011-12-15
BRPI0919623A2 (pt) 2015-12-01

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