[go: up one dir, main page]
More Web Proxy on the site http://driver.im/

JPH0338807A - Shunt reactor jointly-owned transformer - Google Patents

Shunt reactor jointly-owned transformer

Info

Publication number
JPH0338807A
JPH0338807A JP1173037A JP17303789A JPH0338807A JP H0338807 A JPH0338807 A JP H0338807A JP 1173037 A JP1173037 A JP 1173037A JP 17303789 A JP17303789 A JP 17303789A JP H0338807 A JPH0338807 A JP H0338807A
Authority
JP
Japan
Prior art keywords
transformer
yoke
shunt reactor
core
magnetic flux
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
JP1173037A
Other languages
Japanese (ja)
Other versions
JPH0682582B2 (en
Inventor
Kentarou Yanouchi
健太郎 谷ノ内
Katsuji Sokai
祖開　克二
Shoji Nakatsuka
中塚　昭治
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP1173037A priority Critical patent/JPH0682582B2/en
Priority to CN 90100967 priority patent/CN1017846B/en
Priority to EP90109760A priority patent/EP0406555B1/en
Priority to DE1990602708 priority patent/DE69002708T2/en
Publication of JPH0338807A publication Critical patent/JPH0338807A/en
Publication of JPH0682582B2 publication Critical patent/JPH0682582B2/en
Priority to HK98102938A priority patent/HK1003811A1/en
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
    • H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
    • H01F27/38—Auxiliary core members; Auxiliary coils or windings
    • H01F27/385—Auxiliary core members; Auxiliary coils or windings for reducing harmonics
    • 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
    • H01F30/10—Single-phase transformers
    • 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
    • H01F37/00—Fixed inductances not covered by group H01F17/00

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Housings And Mounting Of Transformers (AREA)
  • Transformers For Measuring Instruments (AREA)

Abstract

PURPOSE:To reduce a cross-sectional area of a yoke for a transformer when the transformer and a shunt reactor are operated singly or simultaneously by a method wherein a bypass iron core installed at one part of the yoke for the transformer forms a yoke for the shunt reactor. CONSTITUTION:A bypass iron core Y is installed at one part X of a yoke for a transformer 1; this bypass iron core Y is used as a yoke for a shunt reactor 2. Coils 1d, 2d are wound in directions in which magnetic fluxes 1e, 2e inside the yoke X are offset mutually. They are arranged in such a way that the main magnetic flux 1e inside a yoke 1c for the transformer 1 and the magnetic flux 2e inside a yoke 2b for the shunt reactor 2 flow in reverse directions. Since the magnetic fluxes 1e and 2e flow in the reverse directions and are offset mutually in this manner, a cross-sectional area of the yoke X may be an area corresponding to a difference between the 1e and the 2e. Thereby, a cross-sectional area of the yoke 1c can be reduced.

Description

【発明の詳細な説明】 ［産業上の利用分野］ この発明は、送配電電力系統において使用される分路リ
アクトル共有形変圧器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a shunt reactor sharing type transformer used in power transmission and distribution power systems.

［従来の技術］ 第６図は、例えば、特開昭Ｇｏ−３０１１２号公報に示
された従来の分路リアクトル共有形３相変圧器の内部構
造図であり、図において、（１）は変圧器、（２）は分
路リアクトル、（３〉はタンクである。また、（１ａ）
は変圧器（１）の脚部鉄心、（１１））、　（Ｉｃ）は
変圧器（１）の上部及び下部継鉄、（１ｄ）は変圧器（
１）のコイル、（１ｅ〉は変圧器（１）を励磁した場合
の主磁束を示す。〈２ａ）は分路リアクトル（２〉のギ
ャップ鉄心、（２１１）は分路リアクトル（２）の」二
部鉄心、（２ｄ）は分路リアクトル（２）のコイル、（
２ｅ）は分路リアクトル（２）を励磁した場合の磁束を
示す。[Prior Art] Fig. 6 is an internal structure diagram of a conventional shunt reactor shared type three-phase transformer disclosed in, for example, Japanese Patent Application Laid-open No. Sho Go-30112. (2) is a shunt reactor, (3> is a tank. Also, (1a)
are the leg cores of transformer (1), (11)), (Ic) are the upper and lower yokes of transformer (1), and (1d) are the transformer (1).
Coil 1), (1e) shows the main magnetic flux when the transformer (1) is excited. (2a) shows the gap core of the shunt reactor (2), (211) shows the main magnetic flux of the shunt reactor (2). Two-part core, (2d) is the coil of shunt reactor (2), (
2e) shows the magnetic flux when the shunt reactor (2) is excited.

変圧器（１）のコイル（１ｄ）及び分路リアクトル（２
）のコイル（２ｄ）は、変圧器（１）の脚部鉄心（１ａ
）中の主磁束及び分路リアクトル〈２〉のギャップ鉄心
（２ａ）中の磁束が同極性となるように巻かれている。Coil (1d) of transformer (1) and shunt reactor (2)
) is connected to the leg core (1a) of the transformer (1).
) is wound so that the main magnetic flux in the shunt reactor <2> and the magnetic flux in the gap core (2a) of the shunt reactor <2> have the same polarity.

次に作用について説明する。第７図は、変圧器（１）と
分路リアクトル（２）を共有化しない場合の内部構造図
であり、（４）は変圧器（１）のタンク、（５）は分路
リアクトル（２）のタンク、（２ｃ）は分路リアクトル
（２）の下部鉄心である。そうして、変圧器（１〉の上
部に分路リアクトル〈２）を積み重わ、かつ、分路リア
クトル（２）の下部鉄心（２Ｃ）と変圧器（１）の上部
鉄心（１ｂ）を共有したものが第６図に示すものである
。Next, the effect will be explained. Figure 7 is an internal structure diagram when the transformer (1) and the shunt reactor (2) are not shared; (4) is the tank of the transformer (1), and (5) is the shunt reactor (2). ) is the tank, and (2c) is the lower core of the shunt reactor (2). Then, stack the shunt reactor (2) on top of the transformer (1), and connect the lower core (2C) of the shunt reactor (2) and the upper core (1b) of the transformer (1). What was shared is shown in Figure 6.

第６図において、変圧器（１）の上部継鉄（１ｂ）中を
流れる磁束は、次のようになる。In FIG. 6, the magnetic flux flowing through the upper yoke (1b) of the transformer (1) is as follows.

従って、第６図において、変圧器（１）の上部鉄心（１
ｂ〉の断面積を、上記いずれのケースでも飽和しない大
きさにしておくことによって、第７図と同等の機能を有
し、かつ、第７図に比べ据付スペースの小さいものとな
る。Therefore, in FIG. 6, the upper core (1) of the transformer (1)
By setting the cross-sectional area of b> to a size that does not saturate in any of the above cases, it is possible to have the same function as that shown in FIG. 7, and to have a smaller installation space than that shown in FIG.

一般に　（ｌｅ）＞（２ｅ）　　であるため、変圧器（
１）の」二部継鉄（１１）　）中の磁束はケース１が最
大となり、上部鉄心（１，ｂ　）の断面積は下部鉄心（
１Ｃ〉と同じ太きさが必要である。Generally (le)>(2e), so the transformer (
The magnetic flux in the two-part yoke (11) in 1) is maximum in case 1, and the cross-sectional area of the upper core (1,b) is the same as that of the lower core (1,b).
The same thickness as 1C> is required.

［発明が解決しようとする課題］ 従来の分路リアクトル共有形変圧器は以上のように構成
されているので、変圧器の上部継鉄（１１）　）の断面
積は下部継鉄（ｌｃ）と同し大きさが必要であり、変圧
器の鉄心量を低減することができなかった。[Problems to be Solved by the Invention] Since the conventional shunt reactor shared type transformer is configured as described above, the cross-sectional area of the upper yoke (11) of the transformer is equal to that of the lower yoke (lc). The same size was required, and it was not possible to reduce the amount of iron core in the transformer.

この発明は」二部のような問題点を解請するためになさ
れたもので、変圧器と分路リアクトルを一体化するとと
もに、変圧器の鉄心量をも低減することがてきる分路リ
アクトル共有形変圧器を得ることを目的とする。This invention was made to solve the problems mentioned in Part 2, and it is a shunt reactor that integrates a transformer and a shunt reactor and also reduces the amount of iron core of the transformer. The purpose is to obtain a shared transformer.

［課題を解決するだめの手段］ この発明に係る分路リアクトル共有形変圧器は、変圧器
の継鉄の一部にバイパス鉄心を設け、このバイパス鉄心
を分路リアクトルの継鉄としたものである。[Means for Solving the Problems] The shunt reactor shared type transformer according to the present invention is such that a bypass core is provided in a part of the yoke of the transformer, and this bypass core is used as the yoke of the shunt reactor. be.

［作　用］ この発明におけるバイパス鉄心は、変圧器単独励磁時に
は変圧器主磁束のバイパスとして機能す− るとともに、分路リアクトル励磁時には分路リアク１−
ルの継鉄としても機能する。[Function] The bypass core in the present invention functions as a bypass for the main magnetic flux of the transformer when the transformer is individually excited, and also functions as a bypass for the main magnetic flux of the transformer when the shunt reactor is excited.
It also functions as a yoke.

［実施例］ 以下、この発明の一実施例を図について説明する。第１
図は、外鉄形単相器の場合について示したしので、図に
おいて（１ａ）は変圧器（１〉の脚部鉄心、（ｌｃ）は
変圧器（１）の継鉄、（ｌｄ）は変圧器（１）のコイル
、（１ｅ）は変圧器〈１）を励磁した場合の主磁束、（
Ｘ）は変圧器（１）の継鉄の一部、（Ｙ）は継鉄＜Ｘ＞
のバイパス鉄心を示す。また、（２ａ）は分路リアクト
ル（２）のギャップ鉄心、（２ｄ）は分路リアクトル（
２〉のコイルで、継鉄（Ｘ）とバイパス鉄心（Ｙ）で囲
まれており、（Ｘ）、　（Ｙ）は分路リアクトル（２）
の継鉄を形成している。（２ｅ）は分路リアクトル（２
）を励磁した場合の磁束を示す。[Example] Hereinafter, an example of the present invention will be described with reference to the drawings. 1st
The figure shows the case of an external iron type single-phase transformer, so in the figure (1a) is the leg core of the transformer (1), (lc) is the yoke of the transformer (1), and (ld) is the The coil of transformer (1), (1e) is the main magnetic flux when the transformer (1) is excited, (
X) is part of the yoke of transformer (1), (Y) is the yoke <X>
The bypass iron core is shown. (2a) is the gap core of the shunt reactor (2), and (2d) is the shunt reactor (2).
The coil is surrounded by a yoke (X) and a bypass core (Y), and (X) and (Y) are shunt reactors (2).
It forms a yoke. (2e) is the shunt reactor (2
) shows the magnetic flux when excited.

ここで、コイル（ｌｄ）、　（２ｄ）は、継鉄（Ｘ）中
の磁束＜ｌｅ＞、　（２ｅ）が互いに打ち消す方向に巻
かれている。Here, the coils (ld) and (2d) are wound in a direction in which the magnetic fluxes <le> and (2e) in the yoke (X) cancel each other out.

以下に作用について説明する。第２図は、外鉄形変圧器
〈１〉と外鉄形分路リアクトル（２）を互いの継鉄（ｌ
ｃ）、　（２ｂ）が接するように配置したものであり、
変圧器（１）の継鉄（１ｃ〉中の主磁束（１ｅ）と分路
リアク１〜ル（２）の継鉄（２１３＞中の磁束（２ｅ）
とが逆向きに流れるように配置しである。The effect will be explained below. Figure 2 shows how the external iron type transformer <1> and the external iron type shunt reactor (2) are connected to each other's yoke (l).
c) and (2b) are arranged so that they touch,
The main magnetic flux (1e) in the yoke (1c> of the transformer (1) and the magnetic flux (2e) in the yoke (213>) of shunt reactors 1 to 2 (2)
It is arranged so that the flow is in the opposite direction.

このとき、変圧器（１）の継鉄（ＩＣ〉と分路リアクト
ル（２）の継鉄（２ｂ〉を一体、共有化したものが第１
図に示したものであり、磁束〈１ｅ）と〈２ｅ）は逆向
きに流れて互いに打ち消し合うため、継鉄（Ｘ）の断面
積は（１ｅ〉と（２ｅ〉の差分相当あれば良く、もとの
継鉄（１ｃ）の断面積に比べ低減することができる。At this time, the yoke (IC) of the transformer (1) and the yoke (2b) of the shunt reactor (2) are integrated and shared.
As shown in the figure, the magnetic fluxes <1e) and <2e) flow in opposite directions and cancel each other out, so the cross-sectional area of the yoke (X) only needs to be equivalent to the difference between (1e> and (2e)). This can be reduced compared to the cross-sectional area of the original yoke (1c).

第３図は、変圧器（１）のみ励磁した場合の磁束分布を
示す。この場合、変圧器〈１〉の主磁束は継鉄（Ｘ）と
バイパス鉄心（Ｙ）に分岐して流れることができるため
、継鉄（Ｘ）とバイパス鉄心（Ｙ）の断面積の和が、も
との継鉄（Ｉｃ）相当あれば良い。FIG. 3 shows the magnetic flux distribution when only the transformer (1) is excited. In this case, the main magnetic flux of transformer <1> can branch and flow into the yoke (X) and the bypass core (Y), so the sum of the cross-sectional areas of the yoke (X) and the bypass core (Y) is , it is sufficient if it is equivalent to the original yoke (Ic).

従って、第１図の発明は、第２図の変圧器（１）と分路
リアクトル（２）を−像化することにより、据付スペー
スを縮小すると同時に、変圧器＜１〉の継鉄の一部を図
中（１ｃ）の断面積から（Ｘ）の断面積に低減すること
ができる。Therefore, the invention shown in FIG. 1 reduces the installation space by converting the transformer (1) and shunt reactor (2) in FIG. The section can be reduced from the cross-sectional area of (1c) to the cross-sectional area of (X) in the figure.

なお、上記実施例では、単相器について説明したが、第
４図に示すように、３相器であっても同様の効果を奏す
る。In the above embodiments, a single-phase device has been described, but as shown in FIG. 4, a three-phase device can provide the same effect.

また、上記実施例では、外鉄形について説明したが、第
５図のように内鉄形であっても同様の効果を奏する。Further, in the above embodiment, an outer iron type was explained, but the same effect can be obtained even if an inner iron type is used as shown in FIG.

［発明の効果］ 以上のように、この発明によれば、変圧器の継鉄の一部
にバイパス鉄心を設け、このバイパス鉄心が分路リアク
１〜ルの継鉄を形成するようにしたので、変圧器、分路
リアクトルの単独運転・同時運転いずれの場合にも変圧
器の継鉄の断面積を低減することができる効果がある。[Effects of the Invention] As described above, according to the present invention, a bypass core is provided in a part of the yoke of the transformer, and this bypass core forms the yoke of the shunt reactors 1 to 1. This has the effect of reducing the cross-sectional area of the yoke of the transformer, whether the transformer or the shunt reactor is operated individually or simultaneously.

【図面の簡単な説明】[Brief explanation of drawings]

第１図はこの発明の一実施例の断面図、第２図、第３図
はそれぞれ第１図のものの作用を説明するための断面図
、第４図、第５図はそれぞれ他の実施例の断面図、第６
図は従来の分路リアクトル共有形変圧器の断面図、第７
図は第６図のものの作用を説明するための断面図である
。 （１）　　変圧器、（２）・・分路リアク）・ル、（Ｘ
＞変圧器の継鉄、（Ｙ）　　・バイパス鉄心、（１ａ〉
　　変圧器のコイル、（２ａ）・ギャップ鉄心、（２ｄ
）・・・分路リアクトルのコイル。 なお、各図中、同一符号は同−又は相当部分を示す。 −＠　　Ｑｌ 〜 −） −） 〜 第 ３ 図 第 図 第 図 第 図 手 続 補 正 書 】 事件グ〕表示 特願平１−１７３０３７号 発明の名称 分路リアクトル共有形変圧器 補正をする者 事件との関係　　特許出願人 住　所　　　　　東京都千代田区丸の内二丁目２番３号
名　称　　（６０１）三菱電機株式会社代表者　志岐守
哉FIG. 1 is a sectional view of one embodiment of the present invention, FIGS. 2 and 3 are sectional views for explaining the operation of the device shown in FIG. 1, and FIGS. 4 and 5 are sectional views of other embodiments, respectively. Cross-sectional view, No. 6
The figure is a cross-sectional view of a conventional shunt reactor shared transformer.
This figure is a sectional view for explaining the operation of the one shown in FIG. 6. (1) Transformer, (2)...Shunt reactor), (X
＞Transformer yoke, (Y) ・Bypass iron core, (1a>
Transformer coil, (2a)・Gap core, (2d
)...Shunt reactor coil. In each figure, the same reference numerals indicate the same or corresponding parts. -@ Ql ~ -) -) ~ Figure 3 Procedure Amendment] Case G] Indication Patent Application No. 1-173037 Name of invention Person who makes amendments to shunt reactor shared transformer Case and Related Patent Applicant Address 2-2-3 Marunouchi, Chiyoda-ku, Tokyo Name (601) Mitsubishi Electric Corporation Representative Moriya Shiki

Claims (1)

【特許請求の範囲】[Claims] 　変圧器の継鉄の一部に設けられたバイパス鉄心と、前
記継鉄の一部と前記バイパス鉄心で囲まれた空間内に設
けられたギャップ鉄心およびリアクトルコイルとからな
り、前記バイパス鉄心がリアクトルの継鉄を形成してい
るとともに、前記変圧器のコイルと前記分路リアクトル
のコイルの巻方向を、前記継鉄の一部中の変圧器磁束と
リアクトル磁束が互いに打ち消す方向になっている分路
リアクトル共有形変圧器。It consists of a bypass core provided in a part of a yoke of a transformer, and a gap core and a reactor coil provided in a space surrounded by a part of the yoke and the bypass core, and the bypass core is a reactor. The winding direction of the coil of the transformer and the coil of the shunt reactor is such that the transformer magnetic flux and the reactor magnetic flux in a part of the yoke cancel each other out. shared reactor transformer.
JP1173037A 1989-07-06 1989-07-06 Shunt reactor shared transformer Expired - Lifetime JPH0682582B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP1173037A JPH0682582B2 (en) 1989-07-06 1989-07-06 Shunt reactor shared transformer
CN 90100967 CN1017846B (en) 1989-07-06 1990-02-23 Shunt Reactor Shared Transformer
EP90109760A EP0406555B1 (en) 1989-07-06 1990-05-22 Shared shunt reactor type transformer
DE1990602708 DE69002708T2 (en) 1989-07-06 1990-05-22 Multi-blade shunt reactor transformer.
HK98102938A HK1003811A1 (en) 1989-07-06 1998-04-08 Shared shunt reactor type transformer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1173037A JPH0682582B2 (en) 1989-07-06 1989-07-06 Shunt reactor shared transformer

Publications (2)

Publication Number Publication Date
JPH0338807A true JPH0338807A (en) 1991-02-19
JPH0682582B2 JPH0682582B2 (en) 1994-10-19

Family

ID=15953033

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1173037A Expired - Lifetime JPH0682582B2 (en) 1989-07-06 1989-07-06 Shunt reactor shared transformer

Country Status (5)

Country Link
EP (1) EP0406555B1 (en)
JP (1) JPH0682582B2 (en)
CN (1) CN1017846B (en)
DE (1) DE69002708T2 (en)
HK (1) HK1003811A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009110061A1 (en) 2008-03-04 2009-09-11 三菱電機株式会社 Electric transformer
JP2009284647A (en) * 2008-05-22 2009-12-03 Honda Motor Co Ltd Composite transformer and power converting circuit
CN102106072A (en) * 2008-07-30 2011-06-22 东芝三菱电机产业系统株式会社 Power conversion device

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993014508A1 (en) * 1992-01-17 1993-07-22 Mitsubishi Denki Kabushiki Kaisha Transformer mounted on vehicle
TWI378478B (en) * 2007-01-09 2012-12-01 Mitsubishi Electric Corp Reactor-jointed transformer
CN102867628A (en) * 2012-09-29 2013-01-09 湖南大学 Magnetic integration type integrated filter inductance transformer
DE102016202797A1 (en) 2016-02-24 2017-08-24 Bayerische Motoren Werke Aktiengesellschaft Combined transformer and LLC resonant converter
CN112530676B (en) * 2020-11-17 2022-09-02 青岛中加特电气股份有限公司 Double-iron-core transformer
CN113012903A (en) * 2021-02-04 2021-06-22 中车株洲电力机车研究所有限公司 Control framework suitable for iron core magnetic circuit multiplexing electrical system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6030112A (en) * 1983-07-05 1985-02-15 Fuji Electric Co Ltd Shunt reactor-sharing transformers
JPH0785653B2 (en) * 1986-12-22 1995-09-13 三菱電機株式会社 Three-phase transformer for cycloconverter
US5345443A (en) * 1992-04-30 1994-09-06 At&T Bell Laboratories Network-based digital bandwidth-on-demand

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009110061A1 (en) 2008-03-04 2009-09-11 三菱電機株式会社 Electric transformer
US8274804B2 (en) 2008-03-04 2012-09-25 Mitsubishi Electric Corporation Voltage transforming apparatus
JP2009284647A (en) * 2008-05-22 2009-12-03 Honda Motor Co Ltd Composite transformer and power converting circuit
CN102106072A (en) * 2008-07-30 2011-06-22 东芝三菱电机产业系统株式会社 Power conversion device
US8411472B2 (en) 2008-07-30 2013-04-02 Toshiba Mitsubishi-Electric Industrial Systems Corporation Power conversion device

Also Published As

Publication number Publication date
CN1017846B (en) 1992-08-12
DE69002708D1 (en) 1993-09-16
JPH0682582B2 (en) 1994-10-19
DE69002708T2 (en) 1993-11-25
EP0406555B1 (en) 1993-08-11
CN1048626A (en) 1991-01-16
HK1003811A1 (en) 1998-11-06
EP0406555A1 (en) 1991-01-09

Similar Documents

Publication Publication Date Title
EP0557378B1 (en) A power supply circuit with integrated magnetic components
US4531108A (en) Three-phase choke with a five-leg core
JPH0338807A (en) Shunt reactor jointly-owned transformer
JPH07245222A (en) Reactor and transformer
JPS6430463A (en) Inverter transformer
JPS61224305A (en) Gapped core type reactor
JPS584912A (en) Electromagnetic guiding device
JPH03165428A (en) Display device
JPH06302442A (en) Gapped core type reactor
JP2000021642A (en) Wound core transformer and its manufacture
JPH03283412A (en) Transformer for inverter
JP4241976B2 (en) Power transformer
JP2993703B2 (en) Inverter device
JPH04186606A (en) Transformer incorporating reactor
JP3019327U (en) choke coil
JP2001358025A (en) Three-phase current limiter
JPS61136630A (en) Annealing method of iron core piece
JP2568620Y2 (en) DC high voltage power supply
JPH10144549A (en) Double ratio current transformer
KR19990073377A (en) A three phase single winding transformer
JPH0727135U (en) AC reactor
JPH0434724U (en)
JPS60133710A (en) Super conductive winding
JPH0445506A (en) Transformer
JPS6345965U (en)

Legal Events

Date Code Title Description
R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313113

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071019

Year of fee payment: 13

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081019

Year of fee payment: 14

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091019

Year of fee payment: 15

EXPY Cancellation because of completion of term
FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091019

Year of fee payment: 15