JP2007035804A - Power conversion transformer - Google Patents

Power conversion transformer Download PDF

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JP2007035804A
JP2007035804A JP2005215129A JP2005215129A JP2007035804A JP 2007035804 A JP2007035804 A JP 2007035804A JP 2005215129 A JP2005215129 A JP 2005215129A JP 2005215129 A JP2005215129 A JP 2005215129A JP 2007035804 A JP2007035804 A JP 2007035804A
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coil
thin plate
conductor thin
power conversion
conversion transformer
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Hiroaki Koshin
博昭 小新
Tomohito Kajiyama
智史 梶山
Akira Yoshitake
晃 吉武
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Panasonic Electric Works Co Ltd
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Matsushita Electric Works Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To form a drawing portion of a coil employing a conductor thin plate without using a different member while ensuring a current capacity without impairing an electromagnetic characteristic of the coil in a power conversion transformer. <P>SOLUTION: The power conversion transformer TF is provided with a first coil 1 formed by winding a strip-like long conductor thin plate 10 having insulated one surface or both surfaces; a second coil 2 electromagnetically coupled to the first coil 1; and a core 4 common between the coils 1 and 2, thereby transmitting power between the coils 1 and 2. The lead-out portion 11 of the first coil 1 is formed so that notches for dividing the width of the conductor thin plate 10 into a plurality of parts are formed at the winding beginning portion and the winding end portion of the conductor thin plate 10, the divided conductor thin plate portions of the conductor thin plate are folded in a direction having a predetermined angle in a longitudinal direction and the divided conductor thin plate portions after being folded are overlapped with each other. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、比較的大電流を扱う電力変換トランスに関し、特に太陽光発電システムや小型燃料電池発電システム向け直流交流変換インバータに用いられる電力変換用トランスに関する。   The present invention relates to a power conversion transformer that handles a relatively large current, and more particularly to a power conversion transformer used in a DC / AC conversion inverter for a photovoltaic power generation system or a small fuel cell power generation system.

従来から住宅用の小型の太陽電池発電システムや小型の燃料電池発電システムにおいて、例えば、定格が1〜5kW程度のインバータ装置が用いられている。図6は、このようなインバータ装置の概略回路構成例を示す。この回路は、これらの発電システムで発電された電力を、例えば、直流40Vの入力電圧Vinとして入力し、電力変換トランスTFにより昇圧して、例えば、周波数が50/60Hz、出力電圧Voutが200Vの交流電力に電力変換する。入力段の種類や構成仕様がこのような電池のように比較的低電圧の入力電圧を発生するものの場合、一般に、電力変換のためにトランス(電力変換トランス)が用いられる。   Conventionally, in a small solar cell power generation system for a house and a small fuel cell power generation system, for example, an inverter device having a rating of about 1 to 5 kW has been used. FIG. 6 shows a schematic circuit configuration example of such an inverter device. This circuit inputs the power generated by these power generation systems as, for example, a DC 40V input voltage Vin, and boosts it with a power conversion transformer TF. For example, the frequency is 50/60 Hz and the output voltage Vout is 200V. Convert power to AC power. In the case where the input stage type and configuration specifications generate a relatively low input voltage such as such a battery, a transformer (power conversion transformer) is generally used for power conversion.

このようなトランスにおける低電圧の大電流が流れる1次コイルは、コイル製作作業の容易性、材料入手の容易性、コイル特性面の要求などから、帯状の薄銅板をコアやボビンにロール状に巻回して製造されることが多い。図7(a)は、このような従来の電力変換トランスTFを示す。この電力変換トランスTFは、片面又は両面が絶縁された帯状に長い、例えば薄銅板からなる導電体薄板を巻回して成る第1のコイル1と、第1のコイルに電磁結合する第2のコイル2と、これらのコイルに共通のコア4と、を備え、これらのコイル間で電力の伝達を行う。第2のコイル2は、ボビン3に線材を巻回して形成され、第1のコイル1は、絶縁した板材(導電体薄板)を第2のコイル2の上に一周させて形成されている。   In such a transformer, a primary coil through which a low-voltage large current flows is formed by rolling a strip-shaped thin copper plate on a core or bobbin in order to facilitate coil manufacturing work, easy material acquisition, and coil characteristics. Often manufactured by winding. FIG. 7A shows such a conventional power conversion transformer TF. The power conversion transformer TF includes a first coil 1 formed by winding a thin conductive plate made of, for example, a thin copper plate, and a second coil electromagnetically coupled to the first coil. 2 and a core 4 common to these coils, and power is transmitted between these coils. The second coil 2 is formed by winding a wire around a bobbin 3, and the first coil 1 is formed by making an insulated plate (conductor thin plate) go around the second coil 2.

各コイル1,2にはコイルの引出部11,21が形成されている。引出部11は、導電体薄板を巻回して形成した第1のコイルの巻き始め、巻き終わり部分に形成されるものであり、電流容量に見合った断面積を備えると共に、コイル内での短絡や他の導体との短絡の可能性を減らすため幅を狭くする必要がある。図7(b)は、従来行われている引出部11の形成方法を示す。この引出部11は、必要な断面積を有した別部材からなる導線を導電体薄板10に、ハンダ12により電気接続し固定して形成されている。ハンダ12に替えて溶接等により電気接続と固定を行うこともある。   In each of the coils 1 and 2, coil lead portions 11 and 21 are formed. The lead-out part 11 is formed at the start and end of winding of the first coil formed by winding the conductive thin plate, and has a cross-sectional area corresponding to the current capacity, The width needs to be narrowed to reduce the possibility of shorting with other conductors. FIG. 7B shows a conventional method for forming the lead portion 11. The lead-out portion 11 is formed by electrically connecting and fixing a conductive wire made of another member having a necessary cross-sectional area to the conductor thin plate 10 by solder 12. Instead of the solder 12, electrical connection and fixing may be performed by welding or the like.

上述の第1のコイル1のように帯状の導体を巻いて形成したコイルの引出部の形成に関連して、絶縁被覆した厚さ0.06mm、幅1.2mmの帯状銅箔をロール状に巻回して円環状に形成したコイルから、巻き始め部分と巻き終わり部分の帯状銅箔を折り曲げ、もとの幅のままで引き出すことにより引出部を形成するものが知られている(例えば、特許文献1参照)。
特開平7−288210号公報
In connection with the formation of the lead portion of the coil formed by winding a strip-shaped conductor as in the first coil 1 described above, a strip-shaped copper foil having a thickness of 0.06 mm and a width of 1.2 mm is rolled into a roll shape. It is known to form a lead-out portion by bending a strip-shaped copper foil at a winding start portion and a winding end portion from a coil formed into an annular shape by winding and pulling out the original width as it is (for example, patents) Reference 1).
JP 7-288210 A

しかしながら、上述した図7(a)(b)に示されるような従来の電力変換トランスTFにおいては、導電体薄板10を用いたコイル1の引出部11の形成に導電体薄板10とは別部材の部品を用いるので、トランス製造に必要な部品点数が増えるという問題がある。また、図7(b)に示したように、引出部11の形成にハンダ12を用いると、ハンダ12が引出部11形成領域以外の導電体薄板10の表面に流れたり付着したりすることにより導電体薄板10の柔軟性が失われる可能性があり、柔軟性が失われる結果、巻線間の隙間の発生とこれに伴う漏れインダクタンスの増加等の電気特性面での悪化が引き起こされる可能性がある。また、導電体薄板の絶縁を行う絶縁フィルムなどが、ハンダや溶接などによる巻き始め部分や巻き終わり部分の引出部形成に際し、熱により損傷して絶縁不良を引き起こす可能性がある。なお、絶縁フィルムを高耐熱性のものにするとコストアップにつながる。   However, in the conventional power conversion transformer TF as shown in FIGS. 7A and 7B described above, a member separate from the conductor thin plate 10 is used to form the lead-out portion 11 of the coil 1 using the conductor thin plate 10. Therefore, there is a problem that the number of parts required for transformer production increases. Further, as shown in FIG. 7B, when the solder 12 is used to form the lead portion 11, the solder 12 flows or adheres to the surface of the conductor thin plate 10 other than the lead portion 11 formation region. There is a possibility that the flexibility of the conductor thin plate 10 may be lost, and as a result of the loss of flexibility, there is a possibility that a deterioration in electrical characteristics such as generation of a gap between windings and an increase in leakage inductance associated therewith may be caused. There is. In addition, an insulating film that insulates the conductor thin plate may be damaged by heat and cause poor insulation when forming a winding start portion or a winding end portion by soldering or welding. If the insulating film has a high heat resistance, the cost increases.

また、上述した特許文献1に示されるようなコイルは、厚さが薄く幅も狭くて電流容量が小さい銅箔を用いるものであり、大電流を流すため、厚みや幅が一桁以上も大きくなるような導電体薄板を用いる場合にそのまま適用できるものではない。   Further, the coil as shown in Patent Document 1 described above uses a copper foil having a small thickness and a narrow width and a small current capacity. Since a large current flows, the thickness and width are larger by one digit or more. When using such a conductor thin plate, it cannot be applied as it is.

本発明は、上記課題を解消するものであって、導電体薄板を用いたコイルの引出部を、別部材を用いることなく、電流容量を確保すると共にコイルの電磁特性を損なうことなく形成して備えた電力変換トランスを提供することを目的とする。   The present invention solves the above-mentioned problem, and forms a coil lead-out portion using a conductive thin plate without using a separate member, ensuring current capacity and without damaging the electromagnetic characteristics of the coil. An object is to provide a power conversion transformer provided.

上記課題を達成するために、請求項1の発明は、片面又は両面が絶縁された帯状に長い導電体薄板を巻回して成る第1のコイルと、前記第1のコイルに電磁結合する第2のコイルと、これらのコイルに共通のコアと、を備えて前記コイル間で電力の伝達を行わせる電力変換トランスにおいて、前記導電体薄板の巻き始め及び巻き終わり部分に前記導電体薄板の幅を複数に分割するように切れ込みを入れ、分割された導電体薄板部分を長手方向に対して所定の角度を有する方向に折り畳み、かつ、折り畳み後の分割された導電体薄板部分が重なるようにして前記第1のコイルの引出部を形成したものである。   In order to achieve the above-mentioned object, the invention according to claim 1 is characterized in that a first coil formed by winding a long thin conductor plate in a strip shape in which one side or both sides are insulated, and a second coil electromagnetically coupled to the first coil. And a core common to these coils, and a power conversion transformer for transmitting power between the coils, the width of the conductor thin plate is set at the winding start and winding end portions of the conductor thin plate. The notch is made so as to be divided into a plurality of parts, the divided conductor thin plate part is folded in a direction having a predetermined angle with respect to the longitudinal direction, and the divided conductor thin plate parts after folding are overlapped with each other. The lead portion of the first coil is formed.

本発明によれば、コイル形成材である導電体薄板そのものを用いて引出部を形成するので、引出部用の別部材を準備する必要がなく、電力変換トランス形成に必要な部品点数の増加を抑えてコストダウンできる。また、引出部の形成にハンダやロウ材などの付加物を導電体薄板に対して用いないので、導電体薄板の柔軟性を引出部の根本近くまで損うことがなく、積層された導電体薄板間の隙間の発生を抑えることができる。従って、隙間発生による漏れインダクタンスの増加などの特性劣化を抑制できる。また、引出部作成時に熱を加えることが無いので、絶縁のためのフィルムやシートを損傷することがなく、高価な耐熱性の絶縁材を使用する必要がなく、コストダウンできる。   According to the present invention, since the lead portion is formed using the conductor thin plate itself that is the coil forming material, there is no need to prepare a separate member for the lead portion, and the number of components necessary for forming the power conversion transformer can be increased. Cost can be reduced. Also, since no additional material such as solder or brazing material is used for the conductor thin plate in forming the lead portion, the flexibility of the conductor thin plate is not lost to the base of the lead portion, and the laminated conductor Generation | occurrence | production of the clearance gap between thin plates can be suppressed. Therefore, characteristic deterioration such as an increase in leakage inductance due to generation of a gap can be suppressed. In addition, since heat is not applied at the time of creating the drawer portion, the film or sheet for insulation is not damaged, it is not necessary to use an expensive heat-resistant insulating material, and the cost can be reduced.

以下、本発明の一実施形態に係る電力変換トランスTFについて、図面を参照して説明する。図1(a)は電力変換トランスTFを示し、図1(b)は導電体薄板10を用いた第1のコイル1の引出部を示し、図2(a)〜(c)は引出部の形成手順を示す。電力変換トランスTFは、図1(a)に示すように、片面又は両面が絶縁された帯状に長い、例えば薄銅板からなる導電体薄板10を巻回して成る第1のコイル1と、第1のコイルに電磁結合する第2のコイル2と、これらのコイルに共通のコア4と、を備え、これらのコイル間で電力の伝達を行う。第2のコイル2は、ボビン3に線材を巻回して形成され、第1のコイル1は、絶縁した導電体薄板10を第2のコイル2の上に一周させて形成されている。各コイル1,2にはコイルの引出部11,21が形成されている。第1のコイル1の引出部11は、図1(b)に示すように、導電体薄板10を巻回して形成した第1のコイルの巻き始め、巻き終わり部分に、導電体薄板10そのものを用いて形成される。   Hereinafter, a power conversion transformer TF according to an embodiment of the present invention will be described with reference to the drawings. 1A shows a power conversion transformer TF, FIG. 1B shows a lead-out portion of the first coil 1 using the conductive thin plate 10, and FIGS. 2A to 2C show the lead-out portion. The formation procedure is shown. As shown in FIG. 1A, the power conversion transformer TF includes a first coil 1 formed by winding a conductive thin plate 10 made of, for example, a thin copper plate, which is long in a strip shape in which one side or both sides are insulated. A second coil 2 that is electromagnetically coupled to the other coil, and a core 4 that is common to these coils, and transmits electric power between these coils. The second coil 2 is formed by winding a wire rod around a bobbin 3, and the first coil 1 is formed by making an insulated conductor thin plate 10 make a round on the second coil 2. In each of the coils 1 and 2, coil lead portions 11 and 21 are formed. As shown in FIG. 1B, the lead-out portion 11 of the first coil 1 has the conductor thin plate 10 itself at the start and end of winding of the first coil formed by winding the conductor thin plate 10. Formed using.

引出部11の形成手順を説明する。導電体薄板10を巻回してなる第1のコイル1の巻き始め、巻き終わり部分は、図2(a)に示すように、導電体薄板10の幅を、例えば3つに分割するように矢印xで示すような切れ込みを入れて、短冊片11a〜11cとされる。そして、図2(b)に示すように、最外の短冊片11aから順番に、点線で示した折り線pに沿って折り畳まれて、最終的に、図2(c)に示すように、短冊片11a〜11cを重ねた状態とされ、これらの短冊片11a〜11cの全体で第1のコイル1の引出部11が形成される。   A procedure for forming the lead portion 11 will be described. As shown in FIG. 2 (a), the winding start and end portions of the first coil 1 formed by winding the conductor thin plate 10 are arranged so that the width of the conductor thin plate 10 is divided into, for example, three. The strips 11a to 11c are formed with notches as indicated by x. And as shown in FIG.2 (b), it folds along the fold line p shown by the dotted line in order from the outermost strip piece 11a, and finally, as shown in FIG.2 (c), The strip pieces 11a to 11c are in a state of being overlapped, and the drawn portion 11 of the first coil 1 is formed by the whole of the strip pieces 11a to 11c.

上述の各短冊片11a〜11cを折り曲げる折り線pは、各短冊片11a〜11cについて同等に設けられており、折り曲げる角度φは、導電体薄板10の長手方向に対して略45゜である。従って、短冊片11a〜11cを重ねて形成した引出部11は、導電体薄板10の長手方向に対して略直角方向に形成される(図中の角度θが略90゜)。引出部11は、このようにして形成された後、所定の任意の方向に屈曲して配線及び電気接続される。   The folding lines p for folding the respective strip pieces 11 a to 11 c are provided equally for the respective strip pieces 11 a to 11 c, and the folding angle φ is approximately 45 ° with respect to the longitudinal direction of the conductor thin plate 10. Accordingly, the lead portion 11 formed by overlapping the strips 11a to 11c is formed in a direction substantially perpendicular to the longitudinal direction of the conductor thin plate 10 (the angle θ in the drawing is approximately 90 °). The lead-out portion 11 is formed in this way, and then bent in a predetermined arbitrary direction to be electrically connected to the wiring.

上述の引出部11は、もとの導電体薄板10において電流が流れる断面積と等しい断面積を有しており、引出部11は必要十分な電流容量を有することになる。また、引出部11は、短冊片11a〜11cを重ねることにより板形状から形状変換されて幅が狭くなり、より短い周長でその断面積を形成する。従って、引出部11の表面積が引出部11を形成するもとの導電体薄板10の表面積より小さくなり、引出部11の表面の絶縁が容易となって他の導体との短絡の可能性を減らすことができる。また、引出部11は、コイル形成材である導電体薄板10そのものを用いて形成するので、引出部用の別部材を準備する必要がなく、部品点数の増加を抑える効果により、電力変換トランスTFをコストダウンできる。   The above-described lead portion 11 has a cross-sectional area equal to the cross-sectional area through which current flows in the original conductive thin plate 10, and the lead portion 11 has a necessary and sufficient current capacity. Moreover, the drawer | drawing-out part 11 is shape-converted from plate shape by stacking the strip pieces 11a-11c, a width | variety becomes narrow, and the cross-sectional area is formed with shorter periphery length. Accordingly, the surface area of the lead portion 11 is smaller than the surface area of the conductor thin plate 10 from which the lead portion 11 is formed, the surface of the lead portion 11 is easily insulated, and the possibility of short circuit with other conductors is reduced. be able to. Moreover, since the drawer | drawing-out part 11 is formed using the conductor thin plate 10 itself which is a coil formation material, it is not necessary to prepare the separate member for drawer | drawing-out parts, and it is the power conversion transformer TF by the effect which suppresses the increase in a number of parts. The cost can be reduced.

また、引出部11の形成に際し、ハンダやロウ材などの付加物を導電体薄板10に対して用いないので、導電体薄板10の柔軟性を損うことがない。図1(a)に示した第1のコイル1は、一回巻のものを示しているが、これに限らず、多数回巻いて多層構造としたコイル1を形成することもできる。この場合においても、コイル1に対して上述の構造の引出部11を形成することができる。多層構造のコイル1の場合、ハンダやロウ材などを用いることなく引出部11を形成すると導電体薄板10の柔軟性を損なわないので、積層された導電体薄板10間の隙間の発生を抑えることができる。   In addition, since no additional material such as solder or brazing material is used for the conductor thin plate 10 when the lead-out portion 11 is formed, the flexibility of the conductor thin plate 10 is not impaired. Although the 1st coil 1 shown to Fig.1 (a) has shown the one-turn thing, it is not restricted to this, The coil 1 made into the multilayer structure can be formed by winding many times. Even in this case, the lead portion 11 having the above-described structure can be formed on the coil 1. In the case of the coil 1 having a multilayer structure, if the lead portion 11 is formed without using solder, brazing material, etc., the flexibility of the conductor thin plate 10 is not impaired, so that the generation of a gap between the laminated conductor thin plates 10 is suppressed. Can do.

また、第1のコイル1の導電体薄板10を絶縁する方法として、片面又は両面に絶縁剤を塗布して導電体薄板10を絶縁する他に、巻回に際して絶縁のためのフィルムやシートを間に挟んで導電体薄板10絶縁することもできる。上述の形成方法による引出部11の場合、引出部作成時に熱を加えることが無いので、絶縁剤や絶縁用のフィルムやシートを損傷することがなく、高価な耐熱性の絶縁材を使用する必要がなくコストダウンできる。   In addition, as a method of insulating the conductor thin plate 10 of the first coil 1, in addition to insulating the conductor thin plate 10 by applying an insulating agent on one or both sides, an insulating film or sheet is interposed during winding. It is also possible to insulate the conductor thin plate 10 between the two. In the case of the drawer portion 11 by the above-described forming method, heat is not applied at the time of creating the drawer portion, so that it is necessary to use an expensive heat-resistant insulating material without damaging the insulating agent or the insulating film or sheet. Cost can be reduced.

次に、引出部11の変形例を説明する。図3(a)に示す引出部11は、図3(b)に示すように、導電体薄板10の端部に矢印xで示すような切れ込みを入れると共に、矢印yで示すように、短冊片11a〜11cの端部を切り落として階段状として形成される。各短冊片11a〜11cの長さを予め所定長に切断しておくことにより、重ね合わされた引出部11の端部を揃えることができる。   Next, a modified example of the drawer portion 11 will be described. As shown in FIG. 3 (b), the lead-out portion 11 shown in FIG. 3 (a) has a slit as shown by an arrow x at the end of the conductor thin plate 10, and a strip piece as shown by an arrow y. The ends of 11a to 11c are cut off to form a stepped shape. By cutting the lengths of the strips 11a to 11c into a predetermined length in advance, the end portions of the drawn-out portions 11 can be aligned.

図4(a)に示す引出部11は、電流を分散して流すことができる。この引出部11は、図4(b)に示すように、導電体薄板10の端部を、例えば4つの短冊片11a〜11dに分断して、短冊片11a,11bを図の下方へ、また、短冊片11c、11dを図の上方にそれぞれ折り畳んで形成される。   The lead part 11 shown to Fig.4 (a) can distribute and flow an electric current. As shown in FIG. 4B, the lead-out portion 11 divides the end of the conductor thin plate 10 into, for example, four strip pieces 11a to 11d, and the strip pieces 11a and 11b are moved downward in the drawing. The strips 11c and 11d are each formed by folding upward in the figure.

図5(a)に示す引出部11は、切れ込みを入れない点が、上述の何れの引出部11とも異なっている。この引出部11は、図5(b)に示すように、導電体薄板10の巻き始めや巻き終わり部分の全体を、角度φが略45゜の折り線pに沿って折り畳み、図5(c)に示すように、導電体薄板10の端部をもとの方向に対して略直角方向に持っていく(図中の角度θが略90゜)。さらに、この端部を折り線qに沿って折り畳むことにより、図5(b)(a)に示すように、導電体薄板10のもとの幅の半分の幅の引出部11が形成される。引出部11の幅は、折り線qの位置と折り畳み回数によって変えることができる。このようにして形成された引出部11は、上述した引出部11と同様に、必要十分な電流容量を有すると共に、何らの別部材を用いることなく、導電体薄板10から形成される。   The pull-out portion 11 shown in FIG. 5A is different from any of the above-described pull-out portions 11 in that no cut is made. As shown in FIG. 5B, the lead-out portion 11 folds the entire winding start and end portions of the conductive thin plate 10 along a fold line p having an angle φ of about 45 °. ), The end of the conductor thin plate 10 is held in a direction substantially perpendicular to the original direction (the angle θ in the figure is about 90 °). Further, by folding the end portion along the fold line q, as shown in FIGS. 5B and 5A, a lead-out portion 11 having a width half the original width of the conductor thin plate 10 is formed. . The width of the drawer 11 can be changed depending on the position of the folding line q and the number of folding times. The lead part 11 formed in this way has a necessary and sufficient current capacity, and is formed from the conductor thin plate 10 without using any other member, like the lead part 11 described above.

なお、本発明は、上記構成に限られることなく種々の変形が可能である。例えば、引出部11の幅は、もとの導電体薄板10の幅や、電力変換トランスTFにおける引出部11の配置や用い方によって変更でき、その変更は、切れ込みの形成位置や形成箇所数を調整することによって行われる。また、電力変換トランスTFにおけるコイル1,2の積層順序は、電力変換トランスTFの仕様に基づいて、何れを上層にしてもよい。なお、導電体薄板10を用いると共に上述の引出部11を備えたコイルは、電力変換トランスTFに限らずに、フィルタ用リアクトルやチョークコイル等として用いることができる。   The present invention is not limited to the above-described configuration, and various modifications can be made. For example, the width of the lead portion 11 can be changed depending on the width of the original conductor thin plate 10 and the arrangement and use of the lead portion 11 in the power conversion transformer TF. Done by adjusting. Further, the stacking order of the coils 1 and 2 in the power conversion transformer TF may be any upper layer based on the specifications of the power conversion transformer TF. In addition, the coil using the conductor thin plate 10 and including the above-described lead portion 11 can be used not only as the power conversion transformer TF but also as a filter reactor, a choke coil, or the like.

(a)は本発明の一実施形態に係る電力変換トランスの分解斜視図、(b)は同電力変換トランスの導電体薄板を用いたコイルの引出部の斜視図。(A) is a disassembled perspective view of the power conversion transformer which concerns on one Embodiment of this invention, (b) is a perspective view of the drawer | drawing-out part of the coil using the conductor thin plate of the power conversion transformer. (a)(b)は同上電力変換トランスの導電体薄板を用いたコイルの引出部の形成手順を説明する平面図、(c)は形成された引出部の平面図。(A) (b) is a top view explaining the formation procedure of the extraction part of the coil using the conductor thin plate of a power conversion transformer same as the above, (c) is a top view of the formed extraction part. (a)は本発明の電力変換トランスに用いられる導電体薄板を用いたコイルの引出部の他の例の平面図、(b)は同引出部の形成手順を示す平面図。(A) is a top view of the other example of the extraction part of the coil using the conductor thin plate used for the power conversion transformer of this invention, (b) is a top view which shows the formation procedure of the extraction part. (a)は本発明の電力変換トランスに用いられる導電体薄板を用いたコイルの引出部のさらに他の例の平面図、(b)は同引出部の形成手順を示す平面図。(A) is a top view of the further another example of the extraction part of the coil using the conductor thin plate used for the power conversion transformer of this invention, (b) is a top view which shows the formation procedure of the extraction part. (a)は本発明の電力変換トランスに用いられる導電体薄板を用いたコイルの引出部のさらに他の例の平面図、(b)(c)(d)は同引出部の形成手順を示す平面図。(A) is a top view of the other example of the extraction part of the coil using the conductor thin plate used for the power conversion transformer of this invention, (b) (c) (d) shows the formation procedure of the extraction part. Plan view. 従来及び本発明の電力変換トランスが適用されるインバータ装置の概略回路構成図。The schematic circuit block diagram of the inverter apparatus with which the power conversion transformer of the past and this invention is applied. (a)は従来の電力変換トランスの分解斜視図、(b)は同電力変換トランスの導電体薄板を用いたコイルの引出部の斜視図。(A) is a disassembled perspective view of the conventional power conversion transformer, (b) is a perspective view of the extraction part of the coil using the conductor thin plate of the power conversion transformer.

符号の説明Explanation of symbols

1 第1のコイル
2 第2のコイル
4 コア
10 導電体薄板
11 引出部
TF 電力変換トランス
DESCRIPTION OF SYMBOLS 1 1st coil 2 2nd coil 4 Core 10 Conductor thin plate 11 Lead part TF Power conversion transformer

Claims (1)

片面又は両面が絶縁された帯状に長い導電体薄板を巻回して成る第1のコイルと、前記第1のコイルに電磁結合する第2のコイルと、これらのコイルに共通のコアと、を備えて前記コイル間で電力の伝達を行わせる電力変換トランスにおいて、
前記導電体薄板の巻き始め及び巻き終わり部分に前記導電体薄板の幅を複数に分割するように切れ込みを入れ、分割された導電体薄板部分を長手方向に対して所定の角度を有する方向に折り畳み、かつ、折り畳み後の分割された導電体薄板部分が重なるようにして前記第1のコイルの引出部を形成したことを特徴とする電力変換トランス。
A first coil formed by winding a long conductive thin plate in a strip shape with one or both sides insulated; a second coil electromagnetically coupled to the first coil; and a core common to these coils. In the power conversion transformer that transmits power between the coils,
The conductor thin plate is cut at the start and end of winding to divide the width of the conductor thin plate into a plurality of portions, and the divided conductor thin plate portion is folded in a direction having a predetermined angle with respect to the longitudinal direction. And the lead-out part of said 1st coil was formed so that the divided | segmented conductor thin-plate part after folding might overlap, The power conversion transformer characterized by the above-mentioned.
JP2005215129A 2005-07-25 2005-07-25 Power conversion transformer Pending JP2007035804A (en)

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JP2011205056A (en) * 2010-03-05 2011-10-13 Kobe Steel Ltd Terminal structure of coil
JP2013511824A (en) * 2009-11-19 2013-04-04 イドロ−ケベック Electrical transformer assembly
JP2014093496A (en) * 2012-11-07 2014-05-19 Nec Tokin Corp Reactor and manufacturing method thereof
JP2016005004A (en) * 2014-06-19 2016-01-12 エフォア オーユーイー Transformer
US9704646B2 (en) 2011-05-18 2017-07-11 Hydro-Quebec Ferromagnetic metal ribbon transfer apparatus and method
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Publication number Priority date Publication date Assignee Title
JP2013511824A (en) * 2009-11-19 2013-04-04 イドロ−ケベック Electrical transformer assembly
US9208933B2 (en) 2009-11-19 2015-12-08 Hydro-Quebec Electrical transformer assembly
JP2016026399A (en) * 2009-11-19 2016-02-12 イドロ−ケベックHydro−Quebec Electric transformer assembly
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