JP4617560B2

JP4617560B2 - Static induction appliance and method for manufacturing the same

Info

Publication number: JP4617560B2
Application number: JP2000331843A
Authority: JP
Inventors: 政芳伊藤; 正明高坂; 堅司大久保
Original assignee: Fuji Electric Systems Co Ltd
Current assignee: Fuji Electric Co Ltd
Priority date: 2000-10-31
Filing date: 2000-10-31
Publication date: 2011-01-26
Anticipated expiration: 2020-10-31
Also published as: JP2002141233A

Description

【０００１】
【発明の属する技術分野】
この発明は、大電流を出力する工業用の静止誘導電器に関し、特に、製作工数の少ない静止誘導電器に関する。
【０００２】
【従来の技術】
図１０は、従来の静止誘導電器の巻線結線図である。静止誘導電器が主変圧器１と直列変圧器２とで構成されている。主変圧器１は、鉄心３に主変１次巻線４と主変２次巻線２とタップ巻線６とが巻回されてなり、直列変圧器２はもう一つの鉄心８に直変１次巻線７と直変２次巻線９とが巻回されている。主変２次巻線５と直変２次巻線９とは直列接続され、直変１次巻線７の両端にタップ巻線６が並列接続されている。
【０００３】
図１０は、例えば電気炉用の変圧器など大電流を出力する工業用の静止誘導電器の巻線結線図であり、電圧の入力端Ｕ，Ｘが主変１次巻線４の両端であり、電圧の出力端ｕ，ｘが主変２次巻線５と直変２次巻線９との直列回路の両端である。出力端ｕ，ｘの電圧調整は、タップ巻線６のタップ位置を選択することによって行われる。すなわち、タップ巻線６のタップ位置の選択によって直変１次巻線７の励磁電圧が調整されるので、それによって、直変２次巻線９両端の電圧が変化し、出力端ｕ，ｘの電圧が調整される。
【０００４】
図１１は、図１０の静止誘導電器の巻線断面図である。左側、右側の点線枠内がそれぞれ主変圧器１、直列変圧器２であり、いずれも片側断面図である。主変圧器１は、鉄心３の周りに内径側からタップ巻線６、主変１次巻線４、主変２次巻線５の順で巻回されている。一方、直列変圧器２は、鉄心８の周りに内径側から直変１次巻線７、直変２次巻線９の順で巻回されている。主変２次巻線５は複数の巻線対５Ｃが積層されてなるとともに、直変２次巻線９も複数の巻線対９Ｃが積層されてなり、各巻線対５Ｃ，９Ｃがそれぞれ直列接続されて出力端ｕ，ｘへの縦リード１０，１１に接続されている。
【０００５】
図１２は、図１１の巻線構成を示す要部斜視図である。主変２次巻線５が、上部円板巻線５Ａと下部円板巻線５Ｂとで構成される巻線対５Ｃからなり、主変１次巻線４の外周を巻回している。一方、直変２次巻線９が、上部円板巻線９Ａと下部円板巻線９Ｂとで構成される巻線対９Ｃからなり、直変１次巻線７の外周を巻回している。巻線対５Ｃと９Ｃとで構成された巻線ブロック２９が複数備えられ、その巻線ブロック２９の数は、５０ＭＶＡクラスの静止誘導電器の場合、約４０個程度になる。図１２ではその内、２個の巻線ブロック２９が示されている。その他の巻線ブロック２９は全く同じ構成でもって軸方向に積層されている。各巻線ブロック２９は、出力端ｕへの縦リード１０に接続される平角電線１３が上部円板巻線９Ａにおいて直変１次巻線７の外周に半ターン巻回された後に上部円板巻線５Ａ側へ移され、主変１次巻線４の外周に３ターン巻回される。その後、平角電線１３が下部円板巻線５Ｂへ移され、主変１次巻線４の外周に３ターン巻回される。さらに、平角電線１３が下部円板巻線９Ｂへ移され、直変１次巻線７の外周に３ターン巻回される。その後、平角電線１３が上部円板巻線９Ａへ移され、直変１次巻線７の外周に２．５ターン巻回され、最終的には、平角電線１３は出力端ｘへの縦リード１１に接続される。
【０００６】
図１３は、図１２の巻線ブロック２９の構成を示す平面図であり、（Ａ）が図１２のＲ矢視図、（Ｂ）が図１２のＳ矢視図である。各円板巻線５Ａ，５Ｂ，９Ａ，９Ｂでは平角電線が３ターンずつ巻回され、巻線ブロック２９は８の字の形状をしていることから８の字巻線と呼ばれている。なお、巻線ブロック２９は必ずしも３ターンとは限らず、静止誘導電器の仕様によって異なる。
【０００７】
図１４は、図１２のＴ−Ｔ断面図であり、平角絶縁導体１２が平角導体１２Ａを絶縁紙１２Ｂでもって覆うことによって構成されている。平角電線１３は、平角絶縁導体１２を４本重ねたものからなり、下部円板巻線９Ｂから上部円板巻線９Ａへの渡り部３１で平角絶縁導体１２を転位させてある。
【０００８】
【発明が解決しようとする課題】
しかしながら、前述したような従来の静止誘導電器は、巻線ブロックが製作し難いという問題があった。
すなわち、従来の巻線ブロック２９は、８の字状に一体化されているので、専用の巻線治具の周りに多数本の平角絶縁導体よりなる平角電線１３を当てその形に成形する必要があった。そのために、巻線ブロック２９の巻線作業には、高度の技量が要求されていた。しかも、上部円板巻線と下部円板巻線とを積層した後に縦ダクトを取り付けるとともに、円板巻線間の絶縁スペーサを取り付ける必要があったので、巻線の組み立てに多くの工数がかかっていた。また、上部円板巻線と下部円板巻線との渡り部で平角絶縁導体を転位させるのにも時間がかかっていた。さらに、平角絶縁導体を使用しているので巻線内の渦電流が多くなり、巻線の損失も大きいという欠点があった。
この発明の目的は、巻線ブロックの巻線工数を低減させることにあり、さらには、巻線の損失を低減させることにある。
【０００９】
【課題を解決するための手段】
上記目的を達成するために、この発明によれば、主変１次巻線と主変２次巻線とタップ巻線とを備えた主変圧器と、直変１次巻線と直変２次巻線と備えた直列変圧器とからなり、前記主変２次巻線と前記直変２次巻線とは直列接続されるとともに巻き軸方向を同じにして並べて配され、前記タップ巻線と前記直変１次巻線とは並列接続され、入力電圧が前記主変１次巻線に加えられ、出力電圧が前記主変２次巻線と前記直変２次巻線との直列回路の両端から取り出され、前記タップ巻線のタップ位置が選択されることによって前記出力電圧の値が調整されてなる静止誘導電器において、前記主変２次巻線が，主変１次巻線の外周に巻回されてなる複数の円筒巻線を巻き軸方向に積層するようにして構成されるとともに、前記直変２次巻線が，直変１次巻線の外周に巻回されてなる複数の円筒巻線を巻き軸方向に積層するようにして構成され、前記主変２次巻線の円筒巻線と前記直変２次巻線の円筒巻線とがそれぞれ１つずつ隣接されるとともに，つなぎ部での接続により直列接続されて複数の巻線ブロックが形成され、前記巻線ブロックの両端から出力電圧が取り出され、前記静止誘導電器の出力端への１対のリードに前記複数の巻線ブロックの各両端がそれぞれ接続されてなるようにするとよい。それによって、主変２次巻線の円筒巻線と直変２次巻線の円筒巻線は、それぞれ異なる巻型に巻回されたのちにその円筒巻線同士の接続をすることができる。また、円筒巻線内の冷却用の絶縁スペーサは円筒巻線の巻回中に介装することができる。そのために、巻線ブロックの巻線作業が容易になり、巻線の組み立て工数が低減される。
【００１０】
また、かかる構成において、前記巻線ブロックが、樹脂皮膜で覆われた複数の素線導体が積層されるとともに各素線導体の積層位置が長さ方向に行くに従って順次変わるようにしてなる転位導体からなるようにしてもよい。それによって、転位導体とすることによって、転位される多数本の並列導体に分割することができるので、巻線内の渦電流が少なくなる。しかも、巻線中に導体を転位させる必要がなくなるとともに、巻線ブロック数が減り、巻線ブロックの接続個所が減る。そのために、巻線の組み立て工数がさらに減る。
【００１１】
また、かかる構成において、隣接される前記巻線ブロックの主変圧器の円筒巻線と直列変圧器の円筒巻線とを接続する渡り部同士が直交してなるようにしてもよい。それによって、渡り部の導体に電磁力が発生しないので、短絡時に発生する電磁機械力が働いても渡り部の導体同士が解け難くなる。
また、かかる構成において、前記巻線ブロックのターン間に主変２次巻線と直変２次巻線との軸方向長さを一致させる絶縁スペーサが介装されてなるようにしてもよい。それによって、主変２次巻線と直変２次巻線とのタ−ン数が異なっていても、その巻線軸方向の長さを同じにすることができ、巻線の組み立てが楽になる。
【００１２】
また、かかる構成において、前記巻線ブロックの主変２次巻線および直変２次巻線が、互いに異なる軸方向幅を備えた導体でもって形成されてなるようにしてもよい。それによって、主変２次巻線と直変２次巻線とのタ−ン数が異なっていても、その巻線軸方向の長さを同じにすることができ、巻線の組み立てが楽になる。
【００１３】
また、かかる構成において、前記巻線ブロックが主変２次巻線側の円筒巻線と直変２次巻線側の円筒巻線との接続位置を変える接続片を備えてなるようにしてもよい。
それによって、主変２次巻線と直変２次巻線とのタ−ン数が異なっていても、その巻線軸方向の長さを同じにすることができ、巻線の組み立てが楽になる。
また、この発明によれば、主変１次巻線と主変２次巻線とタップ巻線とを備えた主変圧器と、直変１次巻線と直変２次巻線と備えた直列変圧器とからなり、前記主変２次巻線と前記直変２次巻線とは直列接続されるとともに巻き軸方向を同じにして並べて配され、前記タップ巻線と前記直変１次巻線とは並列接続され、入力電圧が前記主変１次巻線に加えられ、出力電圧が前記主変２次巻線と前記直変２次巻線との直列回路の両端から取り出され、前記タップ巻線のタップ位置が選択されることによって前記出力電圧の値が調整されてなる静止誘導電器であって、前記主変２次巻線が，主変１次巻線の外周に巻回されてなる複数の円筒巻線を巻き軸方向に積層するようにして構成されるとともに、前記直変２次巻線が，直変１次巻線の外周に巻回されてなる複数の円筒巻線を巻き軸方向に積層するようにして構成され、前記主変２次巻線の円筒巻線と前記直変２次巻線の円筒巻線とがそれぞれ１つずつ隣接されるとともに，つなぎ部での接続により直列接続されて複数の巻線ブロックが形成され、前記巻線ブロックの両端から出力電圧が取り出され、前記静止誘導電器の出力端への１対のリードに前記複数の巻線ブロックの各両端がそれぞれ接続されてなる静止誘導電器を製造するための製造方法において、前記主変２次巻線の円筒巻線と前記直変２次巻線の円筒巻線とをそれぞれ異なる巻型に巻回した後に、その円筒巻線同士の接続を前記つなぎ部で行なうことにより前記巻線ブロックを製作する構成とする。
また、かかる構成において、前記巻線ブロックが、樹脂皮膜で覆われた複数の素線導体が積層されるとともに各素線導体の積層位置が長さ方向に行くに従って順次変わるようにしてなる転位導体からなる構成とすることができる。
また、かかる構成において、前記主変２次巻線の円筒巻線と前記直変２次巻線の円筒巻線とをそれぞれ異なる巻型に，ターン間に冷却用の絶縁スペーサを挿入しながら巻回した後に、その円筒巻線同士の接続を前記つなぎ部で行なうことにより前記巻線ブロックを製作する構成とすることができる。
【００１４】
【発明の実施の形態】
以下、この発明を実施例に基づいて説明する。図１は、この発明の実施例にかかる静止誘導電器の巻線ブロックの構成を示す要部斜視図である。主変２次巻線５が、主変１次巻線４の外周を巻回する複数の円筒巻線１５であり、直変２次巻線９が、直変１次巻線７の外周を巻回する複数の円筒巻線１６である。巻線ブロック１７は、円筒巻線１５と１６とがつなぎ部１４を介して直列接続されたものからなる。図１では、２個の巻線ブロック１７が示され、その他の巻線ブロック１７は全く同じ構成でもって上下方向に積層されている。巻線ブロック１７は転位導体１８でもって構成され、図２が転位導体１８の断面図である。すなわち、図２の転位導体１８は、図示されていない樹脂皮膜で覆われた複数の素線導体１８Ａが左右方向積層されるとともに上下２列に並べられ、外周が絶縁紙１８Ｂで覆われている。また、素線導体１８Ａの積層位置は長さ方向に行くに従って変わるように構成されている。
【００１５】
図１に戻り、各巻線ブロック１７は、円筒巻線１５の上部から転位導体１８が直変１次巻線７の外周を半ターン巻回した後に、出力端ｕへの縦リード１０に接続されている。一方、円筒巻線１５の下部から転位導体１８が直変１次巻線７の外周を半ターン巻回した後に、円筒巻線１６とのつなぎ部１４に接続されている。また、円筒巻線１６の上部から転位導体１８が出力端ｘへの縦リード１１に接続されている。
【００１６】
図１において、巻線ブロック１７は、以下のようにして巻回される。まず、各円筒巻線１５，１６は、転位導体１８でもってそれぞれ異なる巻き枠にターン間に冷却用の絶縁スペ−サを挿入しながら円筒状に巻回される。その際、円筒巻線１５の上端は、予め直変２次巻線９の半ターン分と、縦リード１０までの長さ分の転位導体１８を確保しておく。また、円筒巻線１５の下端も、直変２次巻線９の半ターン分の転位導体１８を確保しておく。さらに、円筒巻線１６の上端は、予め縦リード１１までの長さ分の転位導体１８を確保しておく。次に、円筒巻線１５，１６を所定の間隔に並ぶように立て、円筒巻線１５の下端の予め長くした転位導体１８を直変２次巻線９側の巻き枠に半ターン分巻き付け、円筒巻線１５下端の転位導体１８の端部ｘ₀と円筒巻線１６の下端の転位導体１８の端部ｕ₂とがつなぎ部１４でもって接続される。その後、円筒巻線１５の上端の予め長くした転位導体１８を直変２次巻線９側の巻き枠に半ターン分巻き付け、さらに、転位導体１８の端部を縦リード１０に接続する。また、円筒巻線１６の上端の予め長くした転位導体１８の端部も縦リード１１に接続する。
【００１７】
上述のようにして巻回された巻線ブロック１７は、転位導体１８が使用されているので、従来の平角電線による図１２のような巻線ブロック２９より数が少なくて済む。すなわち、図１２における従来の巻線ブロック２９が平角絶縁導体１２が４本重ねられた平角電線１３（図１４）で構成され、その巻線ブロック２９が４０個設けられていたとする。平角絶縁導体１２の平角導体１２Ａの幅が１０ｍｍ、厚さが３ｍｍとすると、従来の巻線ブロック２９の合計の導体断面積は、
【００１８】
【数１】
４０個×４本×１０ｍｍ×３ｍｍ＝４８００ｍｍ²
となる。一方、図１における巻線ブロック１７の転位導体１８が３１本の素線導体１８Ａで撚られ（図２）、その素線導体１８Ａの幅が８ｍｍ、厚さが２ｍｍとすると、１０個の巻線ブロック１７の合計の導体断面積は、
【００１９】
【数２】
１０個×３１本×８ｍｍ×２ｍｍ＝４９６０ｍｍ²
となり、従来の巻線ブロック２９の４０個分の導体断面積とほぼ同じになる。したがって、図１の構成の巻線ブロック１７の個数は、従来の場合の４分の１と非常に少なくて済む。このように大きな差が生ずる理由は、巻線ブロック１７を従来の平角電線１３から転位導体１８にしたことによるもので、それによって、多数本の素線導体１８Ａを一括して巻回できるようになったからである。従来の巻線ブロック２９の構成では、数十本の平角絶縁導体１２を重ねて８の字巻線に成形することは不可能である。
【００２０】
また、図１の構成の巻線ブロック１７は、転位導体１８を巻枠に円筒状に巻き付けるので、巻線作業が従来のように８の字状に加工するための熟練した技量は不要であり、巻線工数が大幅に低減される。さらに、従来の場合における平角電線１３の接続は、４０個の巻線ブロック２９の場合、縦リード１０，１１に合計８０個所行う必要があった。一方、転位導体１８の接続は、１０個の巻線ブロック１７の場合、縦リード１０，１１での２０個所と、つなぎ部１４での１０個所と、合計３０個所で済み、この点からも巻線工数が低減される。
【００２１】
なお、図２における転位導体１８の素線導体１８Ａの外周を熱融着性の樹脂で覆ってもよい。それによって、転位導体１８自体の曲げ強度が高くなり、機械的に丈夫な巻線ブロック１７を形成することができる。したがって、短絡時に発生する電磁機械力に対しても充分に耐えられるようになる。
図３は、この発明の異なる実施例にかかる静止誘導電器の巻線ブロックに使用される転位導体の構成を示す断面斜視図である。転位導体１９は、図示されていない熱融着性の樹脂皮膜で覆われた複数の素線導体１９Ａが左右方向に積層されるとともに上下２列に並べられ、外周が拘束部材１９Ｂでもってターン間に隙間をあけるようにして巻回されている。また、素線導体１９Ａの積層位置は長さ方向に行くに従って変わるように構成されている。拘束部材１９Ｂとしては、例えば、ポリエステル製の絶縁紐や熱収縮性のテープなどが用いられる。転位導体１９は、図２の転位導体１８のように絶縁紙１８Ｂで覆われていないので熱放散性に優れている。したがって、この転位導体１９が、図１のような巻線ブロック１７に使用された場合、巻線ブロック１７の冷却特性が向上する。また、素線導体１９Ａ同士が熱融着するので巻線ブロック１７の機械的特性も優れている。
【００２２】
図４は、この発明のさらに異なる実施例にかかる静止誘導電器の主変２次巻線の構成を示す要部斜視図である。すなわち、図４は、図１の主変２次巻線５を右側から見た図に対応する。転位導体１８が絶縁スペーサ２１を介して６ターン円筒状に巻回されて主変２次巻線５側の巻線ブロック１７が形成されている。主変２次巻線５の上下の端部ｕ₁，端部ｘ₁は、手前側の直変２次巻線９（図１）に渡るように構成されている。下部の巻線ブロック１７における端部ｕ₁での直変２次巻線９側への渡り部と、その上部の巻線ブロック１７における端部ｘ₁での直変２次巻線９側への渡り部とが互いに直交するように配されている。そのために、その渡り部で転位導体１８同士に電磁力が発生しなくなるので、短絡時に発生する電磁機械力が働いても渡り部の導体は解け難くなり、機械的に信頼性の高い静止誘導電器を提供することができる。
【００２３】
図５は、この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図である。すなわち、図５は、図１の直変２次巻線９を右側から見た図に対応する。転位導体１８が絶縁スペーサ２２を介して６ターン円筒状に巻回されて直変２次巻線９側の巻線ブロック１７が形成されている。図５において、太線で書かれた部分は、奥行き側の主変２次巻線５から半ターン巻回された後の転位導体１８を示し、その転位導体１８の端部ｕ₀，端部ｘ₂はそれぞれ手間側の縦リード１０，１１（図１）へ接続される。また、端部ｘ₀はつなぎ部１４を介して端部ｕ₂へ接続されている。巻線ブロック１７の主変２次巻線５側と直変２次巻線９側との高さ調整用の絶縁スペーサ２３が転位導体１８間に介装されている。すなわち、絶縁スペーサ２３は、巻線ブロック１７の主変２次巻線５側と直変２次巻線９側との円筒巻線の巻回数が異なる場合があるので、その高さを互いに一致させるためのものである。それによって、主変２次巻線５と直変２次巻線９との高さを同じにすることができるので、巻線の組み立てが楽になり製作工数を低減することができる。
【００２４】
図６は、この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図である。巻線ブロック１７の直変２次巻線９側の巻回数が、図５のそれより１ターン少ない場合であり、巻線ブロック１７の主変２次巻線５側と直変２次巻線９側との高さ調整用の絶縁スペーサ２３が転位導体１８間に介装されている。図６のその他は、図５の構成と同じである。それによって、主変２次巻線５と直変２次巻線９との高さを同じにすることができるので、巻線の組み立てが楽になり製作工数を低減することができる。
【００２５】
なお、この発明にかかる図５および図６は図の構成に限定されるものではなく、主変２次巻線５と直変２次巻線９との軸方向長さを一致させる絶縁スペーサが主変２次巻線５側のターン間に介装されてもよい。それによっても、巻線の組み立てが楽になり製作工数を低減することができる。
図７は、この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図である。巻線ブロック１７の直変２次巻線９側の巻回数が、図５のそれより１ターン多い場合である。直変２次巻線９側の転位導体２５の上下方向の幅を図５の転位導体１８のそれより小さくすることによって巻線ブロック１７の主変２次巻線５側と直変２次巻線９側との高さが調整されている。図７のその他は、図５の構成と同じである。それによって、主変２次巻線５と直変２次巻線９との高さを同じにすることができるので、巻線の組み立てが楽になり製作工数を低減することができる。
【００２６】
なお、この発明にかかる図７はこの構成に限定されるものではなく、巻線ブロック１７の直変２次巻線９側の巻回数が、図５のそれより少ない場合、直変２次巻線９側の転位導体２５の上下方向の幅を図５の転位導体１８のそれより大きくすることによって巻線ブロック１７の主変２次巻線側と直変２次巻線９側との高さの調整を行ってもよい。それによって、巻線の組み立てが楽になり製作工数を低減することができる。
【００２７】
図８は、この発明のさらに異なる実施例にかかる静止誘導電器の巻線ブロックの構成を示す要部斜視図である。各巻線ブロック１７は、円筒巻線１５の下部から転位導体１８が直変１次巻線７の外周を半ターン巻回した後に、接続片２７とのつなぎ部２８に接続されている。接続片２７は、その上部がつなぎ部３０を介して円筒巻線１５上端の端部ｘ₂に接続されている。円筒巻線１５下端の端部ｕ₂は縦リード１１に接続されている。図８のその他は、図１の構成と同じである。接続片２７の円筒巻線１６との接続位置を変えることによって、円筒巻線１６に流れる電流の向きが変わる。それによって、円筒巻線１６の実質的なターン数を調整することができる。すなわち、図８の場合、縦リード１０から流れ込んだ電流は、端部ｕ。と端部ｕ₁との間の半ターンと、端部ｘ₁と端部ｘ₀との間の半ターンとで、直変１次巻線７の周りを反時計方向に合計１ターン分流れる。さらにその電流は、接続片２７の上部へ流れ、端部ｘ₂と端部ｕ₂との間で直変１次巻線７の周りを時計方向に５ターン分流れる。その結果、実質的には、円筒巻線１６には時計方向に４ターン分の電流が流れることになる。このように、接続片２７によって、円筒巻線１６の実質的なターン数を調整することができる。
【００２８】
図９は、図８の直変２次巻線９を右側から見た要部斜視図である。転位導体１８の端部ｘ₀と端部ｘ₂との間が、つなぎ部２７でもって接続されている。図９のその他は、図５の構成と同じである。図８で記述されたように、直変２次巻線９のターン数は実質的には４ターンとなるが、主変２次巻線５と直変２次巻線９との高さを同じにすることができる。それによって、巻線の組み立てが楽になり、製作工数を低減することができる。
【００２９】
【発明の効果】
この発明は前述のように、主変２次巻線が主変１次巻線の外周に巻回されてなる複数の円筒巻線より構成されるとともに、直変２次巻線が直変１次巻線の外周に巻回されてなる複数の円筒巻線より構成され、主変２次巻線の円筒巻線と直変２次巻線の円筒巻線がそれぞれ１つずつ隣接されるとともに直列接続されて複数の巻線ブロックが形成され、巻線ブロックの両端から出力電圧が取り出されてなるようにすることによって、巻線の組み立て工数が低減され製作コストを下げることができる。
【００３０】
また、かかる構成において、巻線ブロックが転位導体からなるようにすることによって、巻線の組み立て工数がさらに減り、製作コストをさらに下げることができる。
また、かかる構成において、隣接される巻線ブロックの主変圧器の円筒巻線と直列変圧器の円筒巻線とを接続する渡り部同士が直交してなるようにすることによって、巻線ブロックの機械力が増し、信頼性が向上するようになる。
【００３１】
また、かかる構成において、前記巻線ブロックのターン間に主変２次巻線と直変２次巻線との軸方向長さを一致させる絶縁スペーサが介装されてなるようにすることによって、巻線の組み立てが楽になり製作コストをさらに下げることができる。
また、かかる構成において、前記巻線ブロックの主変２次巻線および直変２次巻線が、互いに異なる軸方向幅を備えた導体でもって形成されてなるようにすることによって、巻線の組み立てが楽になり製作コストをさらに下げることができる。
【００３２】
また、かかる構成において、前記巻線ブロックが主変２次巻線側の円筒巻線と直変２次巻線側の円筒巻線との接続位置を変える接続片を備えてなるようにすることによって、巻線の組み立てが楽になり製作コストをさらに下げることができる。
【図面の簡単な説明】
【図１】この発明の実施例にかかる静止誘導電器の巻線ブロックの構成を示す要部斜視図
【図２】図１の転位導体の断面図
【図３】この発明の異なる実施例にかかる静止誘導電器の巻線ブロックに使用される転位導体の構成を示す断面斜視図
【図４】この発明のさらに異なる実施例にかかる静止誘導電器の主変２次巻線の構成を示す要部斜視図
【図５】この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図
【図６】この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図
【図７】この発明のさらに異なる実施例にかかる静止誘導電器の直変２次巻線の構成を示す要部斜視図
【図８】この発明のさらに異なる実施例にかかる静止誘導電器の巻線ブロックの構成を示す要部斜視図
【図９】図８の直変２次巻線を右側から見た要部斜視図
【図１０】従来の静止誘導電器の巻線結線図
【図１１】図１０の静止誘導電器の巻線断面図
【図１２】図１１の巻線構成を示す要部斜視図
【図１３】図１２の巻線ブロックの構成を示す平面図であり、（Ａ）が図１２のＲ矢視図、（Ｂ）が図１２のＳ矢視図
【図１４】図１２のＴ−Ｔ断面図
【符号の説明】
１：主変圧器、２：直列変圧器、３，８：鉄心、４：主変１次巻線、５：主変２次巻線、６：タップ巻線、７：直変１次巻線、９：直変２次巻線、１０，１１：縦リード、１４，２８，３０：つなぎ部、１５，１６：円筒巻線、１７：巻線ブロック、１８，１９，２５：転位導体、２１，２２，２３：絶縁スペーサ、２７：接続片[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an industrial static induction electric device that outputs a large current, and more particularly to a static induction electric appliance with a small number of manufacturing steps.
[0002]
[Prior art]
FIG. 10 is a winding connection diagram of a conventional static induction appliance. The static induction machine is composed of a main transformer 1 and a series transformer 2. The main transformer 1 has a main variable primary winding 4, a main variable secondary winding 2, and a tap winding 6 wound around an iron core 3, and the series transformer 2 changes directly to another iron core 8. A primary winding 7 and a direct change secondary winding 9 are wound. The main variable secondary winding 5 and the direct variable secondary winding 9 are connected in series, and the tap winding 6 is connected in parallel to both ends of the direct variable primary winding 7.
[0003]
FIG. 10 is a winding connection diagram of an industrial static induction electric device that outputs a large current such as a transformer for an electric furnace, for example, and voltage input terminals U and X are both ends of the main variable primary winding 4. The voltage output terminals u and x are both ends of the series circuit of the main variable secondary winding 5 and the direct variable secondary winding 9. The voltage adjustment of the output terminals u and x is performed by selecting the tap position of the tap winding 6. That is, the excitation voltage of the direct change primary winding 7 is adjusted by the selection of the tap position of the tap winding 6, so that the voltage across the direct change secondary winding 9 changes, and the output terminals u, x The voltage of is adjusted.
[0004]
FIG. 11 is a winding cross-sectional view of the static induction electric device of FIG. The insides of the left and right dotted frames are the main transformer 1 and the series transformer 2, respectively, and both are sectional views on one side. The main transformer 1 is wound around the iron core 3 in the order of the tap winding 6, the main variable primary winding 4, and the main variable secondary winding 5 from the inner diameter side. On the other hand, the series transformer 2 is wound around the iron core 8 in the order of the directly changing primary winding 7 and the directly changing secondary winding 9 from the inner diameter side. The main variable secondary winding 5 is formed by stacking a plurality of winding pairs 5C, and the direct variable secondary winding 9 is also formed by stacking a plurality of winding pairs 9C, and each winding pair 5C, 9C is connected in series. Connected to the vertical leads 10 and 11 to the output terminals u and x.
[0005]
FIG. 12 is a perspective view of the main part showing the winding configuration of FIG. The main variable secondary winding 5 is composed of a winding pair 5C composed of an upper disk winding 5A and a lower disk winding 5B, and is wound around the outer periphery of the main variable primary winding 4. On the other hand, the direct-change secondary winding 9 is composed of a winding pair 9C composed of an upper disc winding 9A and a lower disc winding 9B, and is wound around the outer periphery of the direct-change primary winding 7. . A plurality of winding blocks 29 composed of winding pairs 5C and 9C are provided, and the number of winding blocks 29 is about 40 in the case of a 50 MVA class static induction appliance. In FIG. 12, two winding blocks 29 are shown. The other winding blocks 29 have the same configuration and are stacked in the axial direction. Each winding block 29 has an upper disk winding after the flat electric wire 13 connected to the vertical lead 10 to the output end u is wound half turn around the outer circumference of the direct change primary winding 7 in the upper disk winding 9A. It is moved to the wire 5A side and wound around the outer periphery of the main variable primary winding 4 for 3 turns. Thereafter, the flat electric wire 13 is moved to the lower disk winding 5B and wound around the outer periphery of the main variable primary winding 4 for three turns. Further, the flat electric wire 13 is moved to the lower disk winding 9 </ b> B and is wound around the outer periphery of the direct change primary winding 7 by three turns. Thereafter, the flat electric wire 13 is moved to the upper disk winding 9A, and is wound around the outer periphery of the direct change primary winding 7 for 2.5 turns. Finally, the flat electric wire 13 is vertically lead to the output end x. 11 is connected.
[0006]
13 is a plan view showing the configuration of the winding block 29 of FIG. 12, in which (A) is a view taken in the direction of arrow R in FIG. 12, and (B) is a view taken in the direction of arrow S in FIG. In each of the disk windings 5A, 5B, 9A, and 9B, a rectangular electric wire is wound three turns at a time, and the winding block 29 has an 8-shaped shape, so that it is called an 8-shaped winding. Note that the winding block 29 is not necessarily three turns, and differs depending on the specifications of the static induction appliance.
[0007]
FIG. 14 is a cross-sectional view taken along the line T-T in FIG. 12, and the flat insulated conductor 12 covers the flat conductor 12A with insulating paper 12B. The flat electric wire 13 is composed of four flat insulated conductors 12 overlapped, and the flat insulated conductor 12 is transposed at a transition part 31 from the lower disk winding 9B to the upper disk winding 9A.
[0008]
[Problems to be solved by the invention]
However, the conventional static induction appliance as described above has a problem that it is difficult to manufacture a winding block.
That is, since the conventional winding block 29 is integrated in the shape of a figure 8, it is necessary to apply a flat electric wire 13 made of a large number of flat insulated conductors around a dedicated winding jig and to form it into that shape. was there. Therefore, a high level of skill is required for the winding work of the winding block 29. Moreover, since it was necessary to install the vertical duct after laminating the upper disk winding and the lower disk winding and to install the insulating spacer between the disk windings, it takes a lot of man-hours to assemble the winding. It was. In addition, it takes time to displace the flat insulated conductor at the transition between the upper disk winding and the lower disk winding. Further, since a rectangular insulated conductor is used, there are disadvantages that eddy currents in the windings increase and winding losses are large.
An object of the present invention is to reduce the number of winding steps of the winding block, and further to reduce the loss of the winding.
[0009]
[Means for Solving the Problems]
  In order to achieve the above object, according to the present invention, a main transformer having a main variable primary winding, a main variable secondary winding, and a tap winding, a direct change primary winding, and a direct change 2 And a series transformer provided with a secondary winding, wherein the main variable secondary winding and the direct variable secondary winding are connected in series and arranged side by side with the same winding axis direction. And the direct variable primary winding are connected in parallel, an input voltage is applied to the main variable primary winding, and an output voltage is a series circuit of the main variable secondary winding and the direct variable secondary winding. In the static induction electric machine in which the value of the output voltage is adjusted by selecting the tap position of the tap winding, the main secondary winding is,A plurality of cylindrical windings wound around the outer periphery of the main variable primary windingAre stacked in the direction of the winding axisAnd the directly variable secondary winding,A plurality of cylindrical windings wound around the outer circumference of the directly changing primary windingAre stacked in the direction of the winding axisConsists of a cylindrical winding of the main variable secondary winding and a cylindrical winding of the direct variable secondary windingWhenAre adjacent to each other, By connection at the connecting partA plurality of winding blocks are formed in series connection, and an output voltage is taken out from both ends of the winding block.Each end of each of the plurality of winding blocks is connected to a pair of leads to the output end of the static induction device.It is good to make it. Accordingly, the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding can be connected to each other after being wound in different winding forms. The insulating spacer for cooling in the cylindrical winding can be interposed during the winding of the cylindrical winding. For this reason, the winding work of the winding block is facilitated, and the number of man-hours for assembling the winding is reduced.
[0010]
  In this configuration, the winding block isA plurality of strand conductors covered with a resin film are laminated, and the lamination position of each strand conductor is sequentially changed in the length direction.You may make it consist of a dislocation conductor. Thereby, by using the dislocation conductor, it can be divided into a large number of parallel conductors to be dislocated, so that the eddy current in the winding is reduced. In addition, it is not necessary to displace the conductor in the winding, the number of winding blocks is reduced, and the number of connection points of the winding blocks is reduced. As a result, the man-hours for assembling the windings are further reduced.
[0011]
In such a configuration, the connecting portions connecting the cylindrical winding of the main transformer and the cylindrical winding of the series transformer of the adjacent winding block may be orthogonal to each other. As a result, no electromagnetic force is generated in the conductors at the crossover portion, so that the conductors at the crossover portion are difficult to unwind even when an electromagnetic mechanical force generated at the time of a short circuit is applied.
Further, in such a configuration, an insulating spacer that matches the axial lengths of the main variable secondary winding and the direct variable secondary winding may be interposed between the turns of the winding block. Thereby, even if the number of turns of the main variable secondary winding and the direct variable secondary winding is different, the length in the direction of the winding axis can be made the same, and the winding can be easily assembled. .
[0012]
In such a configuration, the main variable secondary winding and the direct variable secondary winding of the winding block may be formed of conductors having different axial widths. Thereby, even if the number of turns of the main variable secondary winding and the direct variable secondary winding is different, the length in the direction of the winding axis can be made the same, and the winding can be easily assembled. .
[0013]
  Further, in this configuration, the winding block may include a connecting piece that changes a connection position between the cylindrical winding on the main variable secondary winding side and the cylindrical winding on the direct variable secondary winding side. Good.
  Thereby, even if the number of turns of the main variable secondary winding and the direct variable secondary winding is different, the length in the direction of the winding axis can be made the same, and the winding can be easily assembled. .
  In addition, according to the present invention, a main transformer having a main variable primary winding, a main variable secondary winding, and a tap winding, and a direct change primary winding and a direct change secondary winding are provided. The main variable secondary winding and the direct variable secondary winding are connected in series and arranged side by side with the same winding axis direction, and the tap winding and the direct variable primary The winding is connected in parallel, the input voltage is applied to the main variable primary winding, the output voltage is taken out from both ends of the series circuit of the main variable secondary winding and the direct variable secondary winding, A static induction electric appliance in which the value of the output voltage is adjusted by selecting a tap position of the tap winding, wherein the main variable secondary winding is wound around the outer periphery of the main variable primary winding A plurality of cylindrical windings are stacked in the winding axis direction, and the direct-change secondary winding is disposed on the outer periphery of the direct-change primary winding. A plurality of rotated cylindrical windings are stacked in the winding axis direction, and each of the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding is one each. A plurality of winding blocks are formed by being connected in series by connection at a connecting portion, an output voltage is taken out from both ends of the winding block, and a pair of outputs to the output end of the static induction device In a manufacturing method for manufacturing a static induction device in which each end of each of the plurality of winding blocks is connected to a lead, the cylindrical winding of the main variable secondary winding and the cylinder of the direct variable secondary winding The winding block is manufactured by winding the windings in different winding dies and then connecting the cylindrical windings at the connecting portion.
Further, in this configuration, the winding block is a dislocation conductor in which a plurality of strand conductors covered with a resin film are laminated and the lamination position of each strand conductor is sequentially changed in the length direction. It can be set as the structure which consists of.
In this configuration, the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding are wound in different winding forms while inserting an insulating spacer for cooling between the turns. After the turning, the winding block can be manufactured by connecting the cylindrical windings at the connecting portion.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, the present invention will be described based on examples. FIG. 1 is a perspective view of a main part showing a configuration of a winding block of a stationary induction device according to an embodiment of the present invention. The main variable secondary winding 5 is a plurality of cylindrical windings 15 wound around the outer periphery of the main variable primary winding 4, and the direct variable secondary winding 9 is arranged around the outer periphery of the direct variable primary winding 7. A plurality of cylindrical windings 16 are wound. The winding block 17 is composed of cylindrical windings 15 and 16 connected in series via a connecting portion 14. In FIG. 1, two winding blocks 17 are shown, and the other winding blocks 17 are stacked in the vertical direction with the same configuration. The winding block 17 is constituted by a dislocation conductor 18, and FIG. 2 is a cross-sectional view of the dislocation conductor 18. That is, the dislocation conductor 18 in FIG. 2 has a plurality of strand conductors 18A covered with a resin film (not shown) laminated in the left-right direction and arranged in two rows, and the outer periphery is covered with insulating paper 18B. . The laminated position of the wire conductor 18A is configured to change as it goes in the length direction.
[0015]
Returning to FIG. 1, each winding block 17 is connected to the vertical lead 10 to the output end u after the dislocation conductor 18 has wound around the outer periphery of the direct change primary winding 7 from the upper part of the cylindrical winding 15. ing. On the other hand, the dislocation conductor 18 is connected from the lower part of the cylindrical winding 15 to the connecting portion 14 with the cylindrical winding 16 after winding the outer periphery of the direct change primary winding 7 by a half turn. A dislocation conductor 18 is connected to the vertical lead 11 from the upper part of the cylindrical winding 16 to the output end x.
[0016]
In FIG. 1, the winding block 17 is wound as follows. First, each of the cylindrical windings 15 and 16 is wound in a cylindrical shape with a dislocation conductor 18 while inserting an insulating spacer for cooling between turns on different winding frames. At that time, the upper end of the cylindrical winding 15 is secured in advance with a dislocation conductor 18 corresponding to the half turn of the direct-change secondary winding 9 and the length to the vertical lead 10. In addition, a dislocation conductor 18 corresponding to a half turn of the direct-change secondary winding 9 is also secured at the lower end of the cylindrical winding 15. Further, a dislocation conductor 18 corresponding to the length to the vertical lead 11 is secured in advance at the upper end of the cylindrical winding 16. Next, the cylindrical windings 15 and 16 are erected so as to be arranged at a predetermined interval, and a dislocation conductor 18 which is long at the lower end of the cylindrical winding 15 is wound around the winding frame on the side of the directly changing secondary winding 9 for a half turn, End x of the dislocation conductor 18 at the lower end of the cylindrical winding 15₀And the end u of the dislocation conductor 18 at the lower end of the cylindrical winding 16₂And are connected by a connecting portion 14. Thereafter, the pre-long dislocation conductor 18 at the upper end of the cylindrical winding 15 is wound around the winding frame on the direct-change secondary winding 9 side by a half turn, and the end of the dislocation conductor 18 is connected to the vertical lead 10. Further, the end portion of the dislocation conductor 18 which is elongated in advance at the upper end of the cylindrical winding 16 is also connected to the vertical lead 11.
[0017]
Since the winding block 17 wound as described above uses the dislocation conductor 18, the number of winding blocks 17 is smaller than that of the winding block 29 as shown in FIG. That is, it is assumed that the conventional winding block 29 in FIG. 12 is constituted by a rectangular electric wire 13 (FIG. 14) in which four flat insulated conductors 12 are stacked, and 40 winding blocks 29 are provided. When the width of the flat conductor 12A of the flat insulated conductor 12 is 10 mm and the thickness is 3 mm, the total conductor cross-sectional area of the conventional winding block 29 is
[0018]
[Expression 1]
40 x 4 x 10mm x 3mm = 4800mm²
It becomes. On the other hand, the dislocation conductor 18 of the winding block 17 in FIG. 1 is twisted by 31 strand conductors 18A (FIG. 2), and the strand conductor 18A has a width of 8 mm and a thickness of 2 mm. The total conductor cross-sectional area of the wire block 17 is
[0019]
[Expression 2]
10 x 31 x 8mm x 2mm = 4960mm²
Thus, the cross-sectional area of 40 conductors of the conventional winding block 29 is almost the same. Therefore, the number of the winding blocks 17 having the configuration shown in FIG. The reason why such a large difference arises is that the winding block 17 is changed from the conventional rectangular electric wire 13 to the dislocation conductor 18, so that a large number of strand conductors 18A can be wound together. Because it became. With the configuration of the conventional winding block 29, it is impossible to form dozens of flat insulated conductors 12 to form an 8-shaped winding.
[0020]
Further, the winding block 17 having the configuration shown in FIG. 1 winds the dislocation conductor 18 around the winding frame in a cylindrical shape, so that a skilled skill for processing the winding work into a figure 8 shape as in the prior art is unnecessary. Winding man-hours are greatly reduced. Further, in the case of 40 winding blocks 29, it is necessary to connect the rectangular electric wires 13 in the conventional case to a total of 80 places on the vertical leads 10 and 11. On the other hand, in the case of ten winding blocks 17, the connection of the dislocation conductors 18 is 20 in the longitudinal leads 10 and 11 and 10 in the connecting portion 14, and a total of 30 is sufficient. Wire man-hours are reduced.
[0021]
Note that the outer periphery of the strand conductor 18A of the dislocation conductor 18 in FIG. Thereby, the bending strength of the dislocation conductor 18 itself is increased, and a mechanically strong winding block 17 can be formed. Therefore, it can sufficiently withstand the electromagnetic mechanical force generated at the time of short circuit.
FIG. 3 is a cross-sectional perspective view showing a configuration of a dislocation conductor used in a winding block of a static induction electric machine according to another embodiment of the present invention. The dislocation conductor 19 has a plurality of strand conductors 19A covered with a heat-sealable resin film (not shown) stacked in the left-right direction and arranged in two rows, and the outer periphery is between the turns with a restraining member 19B. It is wound with a gap in between. In addition, the lamination position of the wire conductor 19A is configured to change as it goes in the length direction. As the restraining member 19B, for example, a polyester insulating string or a heat-shrinkable tape is used. Since the dislocation conductor 19 is not covered with the insulating paper 18B like the dislocation conductor 18 of FIG. 2, it has excellent heat dissipation. Therefore, when the dislocation conductor 19 is used in the winding block 17 as shown in FIG. 1, the cooling characteristics of the winding block 17 are improved. Moreover, since the wire conductors 19A are heat-sealed, the mechanical characteristics of the winding block 17 are also excellent.
[0022]
FIG. 4 is a main part perspective view showing a configuration of a main variable secondary winding of a static induction electric machine according to still another embodiment of the present invention. That is, FIG. 4 corresponds to a view of the main variable secondary winding 5 of FIG. 1 viewed from the right side. The dislocation conductor 18 is wound into a six-turn cylindrical shape via an insulating spacer 21 to form a winding block 17 on the main variable secondary winding 5 side. Upper and lower ends u of the main secondary winding 5₁, End x₁Is configured so as to extend over the direct-change secondary winding 9 (FIG. 1) on the front side. End u in lower winding block 17₁And the end portion x of the winding block 17 at the upper part₁Are arranged so as to be perpendicular to each other. For this reason, no electromagnetic force is generated between the dislocation conductors 18 at the crossing portion. Therefore, even if an electromagnetic mechanical force generated at the time of a short circuit is applied, the crossing portion conductor is difficult to be unwound, and a mechanically reliable static induction electric device. Can be provided.
[0023]
FIG. 5 is a main part perspective view showing a configuration of a direct variable secondary winding of a static induction electric machine according to still another embodiment of the present invention. That is, FIG. 5 corresponds to a view of the directly-changing secondary winding 9 of FIG. 1 viewed from the right side. The dislocation conductor 18 is wound into a six-turn cylindrical shape via an insulating spacer 22 to form a winding block 17 on the side of the directly changing secondary winding 9. In FIG. 5, the part written in bold lines shows the dislocation conductor 18 after being wound half turn from the main variable secondary winding 5 on the depth side, and the end u of the dislocation conductor 18.₀, End x₂Are respectively connected to the vertical leads 10 and 11 (FIG. 1) on the labor side. End x₀The end u through the connecting part 14₂Connected to. An insulating spacer 23 for adjusting the height of the main variable secondary winding 5 side and the direct variable secondary winding 9 side of the winding block 17 is interposed between the dislocation conductors 18. That is, the insulating spacer 23 may have different numbers of turns of the cylindrical winding on the main variable secondary winding 5 side and the direct variable secondary winding 9 side of the winding block 17, so that the heights thereof coincide with each other. It is for making it happen. As a result, the heights of the main variable secondary winding 5 and the direct variable secondary winding 9 can be made the same, so that the winding can be easily assembled and the number of manufacturing steps can be reduced.
[0024]
FIG. 6 is a perspective view of a principal part showing a configuration of a direct variable secondary winding of a static induction electric machine according to still another embodiment of the present invention. This is a case where the number of turns on the directly changing secondary winding 9 side of the winding block 17 is one turn less than that of FIG. 5, and the main changing secondary winding 5 side and the directly changing secondary winding of the winding block 17. An insulating spacer 23 for height adjustment with respect to the 9 side is interposed between the dislocation conductors 18. The rest of FIG. 6 is the same as the configuration of FIG. As a result, the heights of the main variable secondary winding 5 and the direct variable secondary winding 9 can be made the same, so that the winding can be easily assembled and the number of manufacturing steps can be reduced.
[0025]
5 and 6 according to the present invention are not limited to the configuration shown in the drawing, and an insulating spacer for matching the axial lengths of the main variable secondary winding 5 and the direct variable secondary winding 9 is provided. It may be interposed between the turns on the main variable secondary winding 5 side. This also makes it easier to assemble the windings and reduce the number of manufacturing steps.
FIG. 7 is a perspective view of a principal part showing a configuration of a direct variable secondary winding of a static induction electric machine according to still another embodiment of the present invention. This is a case where the number of turns of the winding block 17 on the directly changing secondary winding 9 side is one turn more than that of FIG. By making the width in the vertical direction of the dislocation conductor 25 on the side of the direct change secondary winding 9 smaller than that of the dislocation conductor 18 in FIG. 5, the main change secondary winding 5 side and the direct change secondary winding of the winding block 17 are arranged. The height with respect to the line 9 side is adjusted. The rest of FIG. 7 is the same as the configuration of FIG. As a result, the heights of the main variable secondary winding 5 and the direct variable secondary winding 9 can be made the same, so that the winding can be easily assembled and the number of manufacturing steps can be reduced.
[0026]
7 according to the present invention is not limited to this configuration. When the number of turns of the winding block 17 on the directly changing secondary winding 9 side is smaller than that shown in FIG. 5, the directly changing secondary winding is used. The vertical width of the dislocation conductor 25 on the wire 9 side is made larger than that of the dislocation conductor 18 in FIG. 5, thereby increasing the height of the main variable secondary winding side and the direct variable secondary winding 9 side of the winding block 17. You may adjust the height. As a result, the winding can be easily assembled and the number of manufacturing steps can be reduced.
[0027]
FIG. 8 is a perspective view of a main part showing the configuration of a winding block of a static induction electric machine according to still another embodiment of the present invention. Each winding block 17 is connected to the connecting portion 28 with the connection piece 27 after the dislocation conductor 18 is wound around the outer periphery of the direct-change primary winding 7 by a half turn from the lower part of the cylindrical winding 15. The connection piece 27 has an upper end x at the upper end of the cylindrical winding 15 via the connecting portion 30.₂It is connected to the. End u of cylindrical winding 15 lower end₂Is connected to the vertical lead 11. The rest of FIG. 8 is the same as the configuration of FIG. By changing the connection position of the connection piece 27 with the cylindrical winding 16, the direction of the current flowing through the cylindrical winding 16 is changed. Thereby, the substantial number of turns of the cylindrical winding 16 can be adjusted. That is, in the case of FIG. 8, the current flowing from the vertical lead 10 is the end u. And end u₁Half turn between and end x₁And end x₀A total of one turn flows in the counterclockwise direction around the directly changing primary winding 7 in a half turn. Further, the current flows to the upper part of the connecting piece 27 and the end x₂And end u₂Flows around the direct change primary winding 7 clockwise for 5 turns. As a result, substantially four turns of current flow in the cylindrical winding 16 in the clockwise direction. In this way, the substantial number of turns of the cylindrical winding 16 can be adjusted by the connection piece 27.
[0028]
FIG. 9 is a perspective view of the main part of the direct-change secondary winding 9 of FIG. 8 viewed from the right side. End x of dislocation conductor 18₀And end x₂Are connected by a connecting portion 27. The rest of FIG. 9 is the same as the configuration of FIG. As described in FIG. 8, the number of turns of the direct variable secondary winding 9 is substantially four turns, but the height of the main variable secondary winding 5 and the direct variable secondary winding 9 is Can be the same. As a result, the winding can be easily assembled and the number of manufacturing steps can be reduced.
[0029]
【The invention's effect】
As described above, the present invention comprises a plurality of cylindrical windings in which the main variable secondary winding is wound around the outer periphery of the main variable primary winding, and the direct variable secondary winding is the direct variable 1. It is composed of a plurality of cylindrical windings wound around the outer periphery of the secondary winding, and the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding are adjacent to each other one by one. A plurality of winding blocks are formed in series and the output voltage is extracted from both ends of the winding block, so that the number of winding assembly steps can be reduced and the manufacturing cost can be reduced.
[0030]
In such a configuration, the winding block is made of a dislocation conductor, so that the number of steps for assembling the windings can be further reduced and the manufacturing cost can be further reduced.
Further, in such a configuration, the crossing portions connecting the cylindrical winding of the main transformer and the cylindrical winding of the series transformer of adjacent winding blocks are orthogonal to each other, so that the winding block Increases mechanical power and improves reliability.
[0031]
Further, in such a configuration, an insulating spacer for matching the axial lengths of the main variable secondary winding and the direct variable secondary winding is interposed between the turns of the winding block. Assembling of the winding becomes easier and the production cost can be further reduced.
In such a configuration, the main variable secondary winding and the direct variable secondary winding of the winding block are formed of conductors having different axial widths, whereby Assembling becomes easier and production costs can be further reduced.
[0032]
Further, in this configuration, the winding block includes a connection piece that changes a connection position between the cylindrical winding on the main variable secondary winding side and the cylindrical winding on the direct variable secondary winding side. This makes it easier to assemble the windings and further reduce the production cost.
[Brief description of the drawings]
FIG. 1 is a perspective view of a main part showing the configuration of a winding block of a stationary induction device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of the dislocation conductor of FIG.
FIG. 3 is a cross-sectional perspective view showing the configuration of a dislocation conductor used in a winding block of a static induction electric machine according to another embodiment of the present invention.
FIG. 4 is a perspective view of a main part showing a configuration of a main variable secondary winding of a static induction device according to still another embodiment of the present invention.
FIG. 5 is a perspective view of a main part showing a configuration of a direct variable secondary winding of a static induction electric machine according to still another embodiment of the present invention.
FIG. 6 is a perspective view of a main part showing the configuration of a direct variable secondary winding of a static induction device according to still another embodiment of the present invention.
FIG. 7 is a perspective view of a principal part showing the configuration of a direct variable secondary winding of a static induction device according to still another embodiment of the present invention.
FIG. 8 is a perspective view of a main part showing the configuration of a winding block of a static induction electric machine according to still another embodiment of the present invention.
9 is a perspective view of the main part of the direct-change secondary winding of FIG. 8 as viewed from the right side.
FIG. 10 is a wiring diagram of a conventional static induction machine.
11 is a cross-sectional view of the winding of the static induction device of FIG.
12 is a perspective view of the main part showing the winding configuration of FIG. 11;
13 is a plan view showing the configuration of the winding block of FIG. 12, where (A) is a view taken in the direction of arrow R in FIG. 12, and (B) is a view taken in the direction of arrow S in FIG.
14 is a sectional view taken along line TT in FIG.
[Explanation of symbols]
1: Main transformer, 2: Series transformer, 3, 8: Iron core, 4: Main variable primary winding, 5: Main variable secondary winding, 6: Tap winding, 7: Directly variable primary winding , 9: Directly changing secondary winding, 10, 11: Longitudinal lead, 14, 28, 30: Connecting portion, 15, 16: Cylindrical winding, 17: Winding block, 18, 19, 25: Dislocation conductor, 21 , 22, 23: insulating spacer, 27: connecting piece

Claims

A main transformer including a main variable primary winding, a main variable secondary winding, and a tap winding; and a series transformer including a direct variable primary winding and a direct variable secondary winding, The main variable secondary winding and the direct variable secondary winding are connected in series and arranged side by side with the same winding axis direction, and the tap winding and the direct variable primary winding are connected in parallel. An input voltage is applied to the main variable primary winding, an output voltage is taken from both ends of the series circuit of the main variable secondary winding and the direct variable secondary winding, and the tap position of the tap winding is In the static induction electric machine in which the value of the output voltage is adjusted by selection , the main secondary winding is wound with a plurality of cylindrical windings wound around the outer circumference of the main primary winding. while being configured to be stacked in the axial direction, the straight-varying secondary winding, a plurality of cylinders comprising wound around the outer periphery of the straight variable primary winding Is configured so as to stack a line winding direction, with a cylindrical winding is adjacent one each of the cylindrical winding of the main variable secondary winding linear varying secondary winding, the connecting portion connected by being serially connected in the formed plurality of windings blocks, the output voltage from both ends of the winding block is fetched, said plurality of windings block to a pair of leads to the output of the stationary induction apparatus A stationary induction device characterized in that both ends of each are connected .

2. The static induction appliance according to claim 1, wherein the winding block is formed by laminating a plurality of strand conductors covered with a resin film and sequentially changing the laminating position of each strand conductor in the length direction. A static induction device characterized by comprising a dislocation conductor formed as described above.

The static induction machine according to claim 1 or 2, wherein the connecting portions connecting the cylindrical winding of the main transformer of the adjacent winding block and the cylindrical winding of the series transformer are orthogonal to each other. Characteristic static induction machine.

3. The static induction device according to claim 1, wherein an insulating spacer for interposing axial lengths of the main variable secondary winding and the direct variable secondary winding is interposed between the turns of the winding block. A static induction appliance characterized by

3. The static induction device according to claim 1, wherein the main variable secondary winding and the direct variable secondary winding of the winding block are formed of conductors having different axial widths. Characteristic static induction machine.

The static induction machine according to claim 1 or 2, wherein the winding block has a connection piece for changing a connection position between the cylindrical winding on the main variable secondary winding side and the cylindrical winding on the direct variable secondary winding side. A static induction machine characterized by comprising.

A main transformer including a main variable primary winding, a main variable secondary winding, and a tap winding; and a series transformer including a direct variable primary winding and a direct variable secondary winding, The main variable secondary winding and the direct variable secondary winding are connected in series and arranged side by side with the same winding axis direction, and the tap winding and the direct variable primary winding are connected in parallel. An input voltage is applied to the main variable primary winding, an output voltage is taken from both ends of the series circuit of the main variable secondary winding and the direct variable secondary winding, and the tap position of the tap winding is A plurality of cylindrical windings in which the value of the output voltage is adjusted by selection and the main variable secondary winding is wound around the outer periphery of the main variable primary winding And a plurality of cylinders in which the direct-change secondary winding is wound around the outer periphery of the direct-change primary winding The wire is laminated in the direction of the winding axis, and the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding are adjacent to each other and are connected to each other. Are connected in series to form a plurality of winding blocks, an output voltage is taken out from both ends of the winding block, and the plurality of winding blocks are connected to a pair of leads to the output end of the static induction device In the manufacturing method for manufacturing a static induction device in which both ends of each are connected, the cylindrical winding of the main variable secondary winding is different from the cylindrical winding of the direct variable secondary winding. The winding block is manufactured by connecting the cylindrical windings to each other at the connecting portion after being wound around the coil.

8. The method of manufacturing a static induction appliance according to claim 7, wherein the winding block is formed by laminating a plurality of strand conductors covered with a resin film and as the lamination position of each strand conductor goes in the length direction. A method of manufacturing a static induction device comprising dislocation conductors that are sequentially changed.

9. The method of manufacturing a static induction electric appliance according to claim 7 or 8, wherein the cylindrical winding of the main variable secondary winding and the cylindrical winding of the direct variable secondary winding are arranged in different winding forms, and between turns. A method for manufacturing a stationary induction device, wherein the winding block is manufactured by performing winding while inserting an insulating spacer for cooling and then connecting the cylindrical windings at the connecting portion.