JPH10174334A - Winding for dynamo-electric machine - Google Patents
Winding for dynamo-electric machineInfo
- Publication number
- JPH10174334A JPH10174334A JP32502496A JP32502496A JPH10174334A JP H10174334 A JPH10174334 A JP H10174334A JP 32502496 A JP32502496 A JP 32502496A JP 32502496 A JP32502496 A JP 32502496A JP H10174334 A JPH10174334 A JP H10174334A
- Authority
- JP
- Japan
- Prior art keywords
- semiconductive
- winding
- tape
- electric machine
- rotating electric
- 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
Links
- 238000004804 winding Methods 0.000 title claims abstract description 28
- 238000009413 insulation Methods 0.000 claims abstract description 20
- 229920000728 polyester Polymers 0.000 claims abstract description 15
- 239000004745 nonwoven fabric Substances 0.000 claims abstract description 14
- 239000003973 paint Substances 0.000 claims abstract description 12
- 229920006267 polyester film Polymers 0.000 claims abstract description 7
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 239000011248 coating agent Substances 0.000 claims abstract 2
- 238000000576 coating method Methods 0.000 claims abstract 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 20
- 238000005470 impregnation Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000004065 semiconductor Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 5
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 229920006231 aramid fiber Polymers 0.000 claims description 2
- 229920005989 resin Polymers 0.000 abstract description 10
- 239000011347 resin Substances 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 239000004593 Epoxy Substances 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract description 2
- 238000001035 drying Methods 0.000 abstract description 2
- 229920003055 poly(ester-imide) Polymers 0.000 abstract description 2
- 208000028659 discharge Diseases 0.000 abstract 2
- 230000003449 preventive effect Effects 0.000 abstract 1
- 238000004904 shortening Methods 0.000 abstract 1
- 229920001187 thermosetting polymer Polymers 0.000 abstract 1
- 239000010408 film Substances 0.000 description 10
- 239000003795 chemical substances by application Substances 0.000 description 6
- 238000001723 curing Methods 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007921 spray Substances 0.000 description 3
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 239000004809 Teflon Substances 0.000 description 2
- 229920006362 Teflon® Polymers 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000002759 woven fabric Substances 0.000 description 2
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 101100130497 Drosophila melanogaster Mical gene Proteins 0.000 description 1
- 101100345589 Mus musculus Mical1 gene Proteins 0.000 description 1
- 239000004760 aramid Substances 0.000 description 1
- 229920003235 aromatic polyamide Polymers 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000013007 heat curing Methods 0.000 description 1
- 239000010445 mica Substances 0.000 description 1
- 229910052618 mica group Inorganic materials 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
【発明の詳細な説明】
【０００１】
【発明の属する技術分野】本発明は回転電機の巻線に関
し、特に全体含浸方式で製造する高圧回転電機の固定子
巻線に用いて有用なものである。
【０００２】
【従来の技術】高電圧回転機の固定子巻線のコイル絶縁
の最外層には、コイル表面と鉄心間の隙間で発生する部
分放電を防止するため、部分放電防止処理がなされてい
る。全体含浸絶縁方式の場合は、通常、抵抗値が１０2
〜１０4 Ωになるように調整した塗料を、ガラス織布、
ポリエステル織布、フィルムまたはアラミッド紙等の基
材に塗布し、テープ状またはシート状にしたものをコイ
ル絶縁の最外層に巻き付けたものが一般的な構成であ
る。
【０００３】この場合に要求される機能としては、コイ
ル絶縁に密着して、コイル絶縁と半導電層の間には隙間
を生じさせないこと及び半導電層と鉄心間を接続状態に
して同電位に保持することが必要である。
【０００４】全体含浸方式の場合は、コイル絶縁及び部
分放電防止処理を施したコイルを鉄心に装着して結線作
業を行った後、合成レジンを真空加圧含浸処理し、その
後乾燥炉に入れてレジンの硬化処理を行っている。
【０００５】ところが上述の如き全体含浸方式の場合に
は、硬化処理の際レジンの硬化収縮を伴う。また、乾燥
時の高温から室温に戻すときに、鉄心、絶縁層、素線導
体の熱膨張率の差により、絶縁層には収縮方向の応力が
かかる。このため、レジンの硬化収縮、熱膨張率差によ
る応力によって絶縁層間に微細な空隙が形成されこの空
隙で部分放電が発生するという問題がある。
【０００６】レジンの硬化収縮及び鉄心、絶縁層、導体
の熱膨張率差は、完全に抑制できない。したがって、部
分放電の発生に悪影響を与えない個所に、硬化収縮及び
熱膨張率差を吸収する応力緩和層を設ける必要がある。
微細な空隙があっても、部分放電を発生させない個所
は、半導電層と鉄心との間である。半導電層と鉄心との
間に微細な空隙が形成されたとしても、部分的に鉄心と
接触している個所があれば、鉄心と半導電層との間の電
位は、同電位に保持されるからである。そこで、従来半
導電層をコイル絶縁の表面に密着性を良好に保持して接
着させる半導電層、鉄心及びコイルの間を非接着（離
形）状態にするべく半導電層を２重構造にしている。す
なわち、コイル絶縁の最外層の上に接着性の良い通常の
半導電テープを巻き、その上に離形性の良い、テフロン
半導電テープ（ふっ素系樹脂混入フィルム）を巻いて処
理している。なお、テフロン半導電テープを、直接、コ
イル絶縁表面に巻き付けた場合は、絶縁表面との接着が
悪く、半導電層とコイル表面間で部分放電が発生し、効
果がないことを実験的に確認している。
【０００７】以上のように、半導電層を２重にすること
で、部分放電の発生を抑えているが、この場合次のよう
な問題がある。
（１） ２重に巻き重ねるため、テーピングの時間がか
かる。
（２） 絶縁強度に寄与しない、半導電層を余分に巻く
ので、絶縁寸法が大きくなりマシン全体の体格が大きく
なる。
（３） コスト面でも余分にかかってしまう。
【０００８】本発明は、上記従来技術に鑑み、半導電層
を２重にすることなく絶縁層間の空隙の形成を抑え、部
分放電の発生を抑制することができる回転電機の巻線を
提供することを目的とする。
【０００９】
【課題を解決するための手段】上記目的を達成する本発
明は次の知見を基礎とするものである。すなわち、従来
技術においては半導電層を２重にすることで部分放電の
発生を抑えているが、同様の効果は、接着力が、鉄心側
≪コイル絶縁側となるような半導電テープの構造とし、
鉄心側に硬化収縮と、熱膨張差による応力を吸収させる
ことで、１重構造で部分放電を抑制できる。このとき鉄
心溝に装着されたコイルは通電により熱膨張するため鉄
心溝とすべり易くする必要があり、このためコイル表面
又は鉄心溝表面に離形剤又は離形性のよいフィルムをほ
どこすこともある（鉄心長大の場合に多く用いる）点に
も配慮しなければならない。
【００１０】上記知見に基づく本発明の構成は次の点を
特徴とする。
【００１１】１） 全体含浸方式で処理される回転電機
の巻線において、基材にポリエステルフィルムとポリエ
ステル不織布の貼り合せ品を用い、ポリエステルフィル
ム側に１０2 〜１０4 Ω−ｃｍの抵抗値になるように調
整された半導電塗料を塗布、乾燥した半導電テープまた
は半導電シートをコイル絶縁の最外層に巻回するととも
に鉄心に装着して構成したこと。
【００１２】２） 上記１）において、乾燥された半導
電塗料面に離形性の硬化皮膜をコーティングした半導電
テープまたは半導電シートを用いたこと。
【００１３】３） 全体含浸方式で処理される回転電機
の巻線において、基材に片面が接着処理されたポリエス
テルフィルムを用い、接着処理を施していないフィルム
面に１０2 〜１０4 Ω−ｃｍの抵抗値になるように調整
された半導電塗料を塗布、乾燥した半導電テープまたは
半導電シートをコイル絶縁の最外層に巻回するとともに
鉄心に装着して構成したこと。
【００１４】４） 上記３）において、乾燥された半導
電塗料面に離形性の硬化皮膜をコーティングした半導電
テープまたは半導電シートを用いたこと。
【００１５】５） 全体含浸方式で処理される回転電機
の巻線において、ポリエステル不織布と、カーボン繊維
及びアラミッド繊維から成り抵抗値１０ 2 〜１０4 Ω−
ｃｍの抵抗値を有する半導電ペーパとを合成樹脂系の接
着剤で貼り合せて成る半導電テープまたは半導電シート
をコイル絶縁の最外層に巻回するとともに鉄心に装着し
て構成したこと。
【００１６】６） 上記５）において、半導電ペーパ面
に離形性の硬化皮膜をコーティングした半導電テープま
たは半導電シートを用いたこと。
【００１７】
【発明の実施の形態】以下本発明の実施の形態を図面に
基づき詳細に説明する。図１は本発明の実施の形態に係
る回転電機の固定子の巻線の１個を抽出して示す斜視
図、図２はそのＡ−Ａ線断面図である。両図に示すよう
に、この巻線Ｉは、４．５ｍｍ×１．８ｍｍの平角エナ
メル素線１を２本持ちで１０段に巻回して形成したコイ
ル導体束を直線長５００ｍｍの亀甲形に成形し、さらに
ガラス裏ちの集成マイカテープ２をハーフラップで４回
巻き重ねて厚さ１．５ｍｍの対地絶縁層３を形成すると
ともにこの対地絶縁層３の直線部分（鉄心溝に挿入され
る部分）に各実施例に示す半導電テープ４を巻回したも
のである。このときの半導電テープ４の厚さは約０．１
ｍｍ〜０．２ｍｍである。また半導電テープ４の代わり
に同様の半導電シートを用いても勿論良い。半導電テー
プ４の構成をさらに具体的にした実施例は次の通りであ
る。
【００１８】＜実施例１＞半導電テープ４１は、図３に
示すように、ポリエステル不織布５とポリエステルフィ
ルム６とを貼り合せた基材７のフィルム側に、カーボン
粉、樹脂、溶剤からなる半導電塗料８を塗布、乾燥して
１０2 〜１０3 Ω−ｃｍの抵抗値を有するように形成し
たものである。かかる半導電テープ４１はポリエステル
不織布５側がコイル絶縁側になるように対地絶縁層３
（図１及び図２参照）に巻回した。その後スロットに挿
着し、合成レジン（エポキシ／ポリエステルイミド）を
真空加圧含浸して加熱硬化処理を行った。
【００１９】＜実施例２＞上記実施例１において、図４
に示すように、半導電テープ４１の半導電塗料８の上面
にふっ素樹脂系の離形剤９をスプレーコーティングした
テープを、ポリエステル不織布５側がコイル絶縁側にな
るように巻回した。
【００２０】＜実施例３＞上記実施例１において、図５
に示すように、半導電テープ４１の基材７に片面が接着
剤１０で接着処理してあるポリエステルフィルム６１を
用いて非接着処理面に半導電塗料８を塗布し、接着処理
面がコイル絶縁側になるように巻回した。
【００２１】＜実施例４＞上記実施例３において、半導
電塗料８の上面にふっ素系の離形剤９をスプレーコーテ
ィングしたテープを、接着処理面がコイル絶縁側になる
ように巻回した。
【００２２】＜実施例５＞上記実施例１において、片側
にポリエステル不織布、反対側にカーボン繊維とアラミ
ッド繊維から成る半導電ペーパーを貼り合せた１０2 〜
１０4 Ω−ｃｍの表面抵抗値を有する半導電テープを、
不織布面がコイル絶縁側になるように巻回した。
【００２３】＜実施例６＞上記実施例５において、半導
電ペーパー側に、ふっ素系離形剤をスプレーコーティン
グし、不織布がコイル絶縁側になるように巻回した。
【００２４】上記実施例の効果を確認すべく比較例の巻
線を作製してレジン硬化後のΔtanδ特性を調べた。比
較例１に係る巻線は、実施例１において、ポリエステル
繊維に、カーボン粉、樹脂、溶剤から成る半導電塗料を
塗布、乾燥した１０2 〜１０ 4 Ω−ｃｍの半導電テープ
をコイル絶縁の表面に巻回したものである。比較例２に
係る巻線は、実施例１において、ポリエステル繊維にカ
ーボン粉、樹脂、溶剤から成る半導電塗料を塗布乾燥し
た１０2 〜１０4 Ω−ｃｍの半導電テープを、コイル絶
縁の表面に巻回し、さらにその上からふっ素樹脂系半導
電テープを巻回したものである。
【００２５】図６に上記実施例及び比較例におけるレジ
ン硬化後のΔtan δ特性の分布を示す。Δtan δは、部
分放電量に比例するため、絶縁層中の空隙量を示す指標
として用いられている。図６を参照すれば各実施例の場
合、鉄心側の接着力がコイル側に比べて弱いため、比較
例１に比べると特性が改善されているのが分る。また、
鉄心側に離形性の半導電テープを処理して、２重構造と
した比較例２に対しても遜色のない効果が得られている
ことが分かる。
【００２６】
【発明の効果】以上実施の形態とともに詳細に説明した
通り、本発明によれば次の効果を得る。
（１） １回巻きで、効果的に部分放電防止処理が可能
になる。
（２） １回巻きで済むので、処理作業時間が短縮され
る。
（３） １回巻きで済むので、コイル絶縁厚さが縮小で
き、マシンの小形、軽量化につながる。DETAILED DESCRIPTION OF THE INVENTION
[0001]
The present invention relates to a winding of a rotating electric machine.
, Especially for high-voltage rotating electrical machines manufactured by the total impregnation method
Useful for windings.
[0002]
2. Description of the Related Art Coil insulation of a stator winding of a high-voltage rotating machine
In the outermost layer, there is a part generated in the gap between the coil surface and the iron core
In order to prevent partial discharge, partial discharge prevention processing is performed.
You. In the case of the whole impregnation insulation method, the resistance value is usually 10Two
-10FourPaint adjusted to Ω, glass woven fabric,
Base such as polyester woven fabric, film or aramid paper
Apply to the material and make a tape or sheet
The general configuration is to wind the outermost layer of
You.
[0003] In this case, the functions required are
Close to the coil insulation, and a gap between the coil insulation and the semiconductive layer.
And the connection between the semiconductive layer and the iron core
To maintain the same potential.
[0004] In the case of the whole impregnation method, coil insulation and part
Connect the coil that has been subjected to the
After performing the work, the synthetic resin is impregnated with vacuum pressure
The resin is then cured in a post-drying oven.
[0005] However, in the case of the whole impregnation method as described above,
Is accompanied by curing shrinkage of the resin during the curing treatment. Also dry
When returning from high temperature to room temperature, iron core, insulation layer,
Due to the difference in the coefficient of thermal expansion of the body, stress in the contraction direction is applied to the insulating layer.
Take it. For this reason, curing shrinkage of resin and thermal expansion coefficient difference
Microscopic voids are formed between the insulating layers due to the
There is a problem that partial discharge occurs in the gap.
Resin cure shrinkage and iron core, insulating layer, conductor
Cannot be completely suppressed. Therefore, the part
Where there is no adverse effect on the occurrence of partial discharge, cure shrinkage and
It is necessary to provide a stress relaxation layer that absorbs the difference in thermal expansion coefficient.
A place where partial discharge does not occur even if there are minute gaps
Is between the semiconductive layer and the iron core. Between the semiconductive layer and the iron core
Even if fine voids are formed between them,
If there is any contact, the electrical connection between the iron core and the semiconductive layer
This is because the potential is maintained at the same potential. Therefore,
Connect the conductive layer to the coil insulation surface with good adhesion.
Non-adhesion (separation) between the semiconductive layer to be adhered, the iron core and the coil
Shape), the semiconductive layer has a double structure. You
That is, a normal adhesive with good adhesion on the outermost layer of coil insulation
Wrap a semi-conductive tape, and put Teflon on it with good releasability
Wrap a semi-conductive tape (film mixed with fluororesin)
I understand. Note that the Teflon semi-conductive tape is directly
When wrapped around an insulating surface, adhesion to the insulating surface
Poor, partial discharge occurs between the semiconductive layer and the coil surface,
It has been experimentally confirmed that there is no fruit.
[0007] As described above, the semiconductive layer is doubled.
In this case, the occurrence of partial discharge is suppressed.
Problem.
(1) Taping time is too long for double winding
Call
(2) Extra semiconductive layer that does not contribute to insulation strength
So the insulation size is bigger and the whole machine is bigger
Become.
(3) It costs extra in terms of cost.
[0008] In view of the above prior art, the present invention provides a semiconductive layer.
The formation of voids between the insulating layers is suppressed without making
The windings of a rotating electrical machine that can suppress the
The purpose is to provide.
[0009]
[MEANS FOR SOLVING THE PROBLEMS]
Akira is based on the following findings. That is,
In technology, the semi-conductive layer is doubled to reduce the partial discharge.
Although the occurrence is suppressed, the similar effect is that the adhesive strength is
と し Semi-conductive tape structure on the coil insulation side,
Absorbs stress due to hardening shrinkage and thermal expansion difference on the core side
Thereby, partial discharge can be suppressed by a single structure. At this time iron
Since the coil mounted in the core groove expands thermally when energized, iron
It is necessary to make it easy to slip with the center groove.
Alternatively, apply a release agent or a film with good release properties to the surface of the iron core groove.
There is a place where it may be used (often used when the iron core is long)
Must also be considered.
The configuration of the present invention based on the above findings has the following points.
Features.
1) A rotating electric machine that is processed by a total impregnation method
In the winding, the polyester film and the poly
Use a polyester non-woven fabric with a stell non-woven fabric
10Two-10FourΩ-cm resistance value.
Apply the adjusted semi-conductive paint and dry semi-conductive tape or
Rolls a semiconductive sheet around the outermost layer of coil insulation
To be attached to the iron core.
2) In the above 1), the dried semiconductor
Semiconducting coated releasable cured film on electropaint
Using tape or semiconductive sheet.
3) A rotating electric machine processed by a total impregnation method
Polyester with one side adhered to the base material
Film that has not been subjected to adhesive treatment using tellurium film
10 on the surfaceTwo-10FourAdjusted to have a resistance of Ω-cm
Coated semi-conductive paint, dried semi-conductive tape or
While winding a semiconductive sheet around the outermost layer of coil insulation
That it is mounted on an iron core.
4) In the above 3), the dried semiconductor
Semiconducting coated releasable cured film on electropaint
Using tape or semiconductive sheet.
5) A rotating electric machine processed by a total impregnation method
In the winding of the polyester nonwoven fabric and carbon fiber
And aramid fiber, resistance value 10 Two-10FourΩ−
cm of semi-conductive paper with a synthetic resin
Semiconductive tape or semiconductive sheet bonded with adhesive
Is wound around the outermost layer of the coil insulation and attached to the iron core.
It was configured.
6) In the above 5), a semiconductive paper surface
Semiconductive tape coated with a releasable cured film
Or a semiconductive sheet is used.
[0017]
BRIEF DESCRIPTION OF THE DRAWINGS FIG.
It will be described in detail based on FIG. FIG. 1 shows an embodiment of the present invention.
Perspective showing one of the windings of the stator of a rotating electric machine
FIG. 2 is a sectional view taken along line AA of FIG. As shown in both figures
The winding I is a 4.5 mm × 1.8 mm flat rectangular energy
A coil formed by holding two Mel wires 1 and winding them into 10 steps
The conductor bundle is formed into a turtle-shape with a linear length of 500 mm.
Glued mica tape 2 on the back of the glass 4 times with half wrap
When wound to form a ground insulating layer 3 having a thickness of 1.5 mm,
Both are straight portions of this ground insulating layer 3 (inserted into the iron core groove
The semiconductive tape 4 shown in each embodiment is wound around the
It is. At this time, the thickness of the semiconductive tape 4 is about 0.1
mm to 0.2 mm. Also, instead of semiconductive tape 4
Of course, a similar semiconductive sheet may be used. Semiconductive tape
An example in which the configuration of the step 4 is more specific is as follows.
You.
<Embodiment 1> The semiconductive tape 41 is shown in FIG.
As shown, the polyester nonwoven fabric 5 and the polyester fiber
Carbon film on the film side of the substrate 7 on which the
Apply semi-conductive paint 8 consisting of powder, resin and solvent, and dry
10Two-10ThreeFormed to have a resistance of Ω-cm
It is a thing. The semiconductive tape 41 is made of polyester
The ground insulating layer 3 so that the nonwoven fabric 5 side is the coil insulating side.
(See FIGS. 1 and 2). Then insert it into the slot
Wear synthetic resin (epoxy / polyester imide)
Heat-curing treatment was performed by impregnation under vacuum pressure.
<Embodiment 2> In Embodiment 1 described above, FIG.
The upper surface of the semiconductive paint 8 of the semiconductive tape 41 as shown in FIG.
Spray-coated with fluororesin release agent 9
Tape the polyester non-woven fabric 5 side to the coil insulation side.
Wound up.
<Embodiment 3> In Embodiment 1 described above, FIG.
As shown in the figure, one side is adhered to the base material 7 of the semiconductive tape 41.
Polyester film 61 that has been adhesively treated with agent 10
Apply semiconductive paint 8 to the non-adhesion treated surface using
It was wound so that the surface was on the coil insulating side.
<Embodiment 4> A semiconductor device according to Embodiment 3
Spray coat a fluorine-based release agent 9 on the upper surface of the electropaint 8
The bonding surface of the tape is the coil insulation side
Wound up.
<Embodiment 5> In Embodiment 1 described above, one side
Polyester non-woven fabric, carbon fiber and arami on the other side
10 with semiconductive paper consisting of padded fiberTwo~
10FourA semiconductive tape having a surface resistance of Ω-cm,
It was wound so that the nonwoven fabric surface was on the coil insulating side.
<Embodiment 6> A semiconductor device according to Embodiment 5
Spray coat a fluorine-based release agent on the paper
And wound so that the nonwoven fabric is on the coil insulating side.
To confirm the effect of the above embodiment,
A wire was prepared and the Δtan δ characteristics after resin curing were examined. ratio
The winding according to Comparative Example 1 is the same as that of Example 1 except that
A semiconductive paint consisting of carbon powder, resin and solvent is applied to the fiber.
Coated and dried 10Two-10 FourΩ-cm semiconductive tape
Is wound on the surface of the coil insulation. In Comparative Example 2
In Example 1, such a winding was applied to the polyester fiber.
Semi-conductive paint consisting of carbon powder, resin and solvent
10Two-10FourΩ-cm semiconductive tape
Wound on the surface of the rim, and further from above the fluororesin semi-conductor
An electric tape is wound.
FIG. 6 shows the registration in the above embodiment and comparative example.
4 shows the distribution of Δtan δ characteristics after curing. Δtan δ is the part
An index indicating the amount of voids in the insulating layer because it is proportional to the amount of discharge
It is used as Referring to FIG.
If the core side has weaker adhesive strength than the coil side,
It can be seen that the characteristics are improved as compared with Example 1. Also,
The core side is treated with a releasable semiconductive tape to create a double structure.
The same effect as Comparative Example 2 was obtained.
You can see that.
[0026]
The present invention has been described in detail with the embodiments.
As described above, according to the present invention, the following effects can be obtained.
(1) With a single turn, effective partial discharge prevention treatment is possible
become.
(2) Since only one winding is required, processing time is reduced.
You.
(3) Since only one turn is required, the coil insulation thickness can be reduced.
This leads to smaller and lighter machines.
【図面の簡単な説明】
【図１】本発明の実施の形態に係る回転電機の固定子の
巻線の１個を抽出して示す斜視図。
【図２】図１のＡ−Ａ線断面図。
【図３】第１の実施例に用いる半導電テープの構造を概
念的に示す説明図。
【図４】第２の実施例に用いる半導電テープの構造を概
念的に示す説明図。
【図５】第３の実施例に用いる半導電テープの構造を概
念的に示す説明図。
【図６】実施例及び比較例におけるレジン硬化後のΔta
n δ特性の分布を示す特性図。
【符号の説明】
Ｉ 巻線
４、４１ 半導電テープ
５ ポリエステル不織布
６、６１ ポリエステルフイルム
７ 基材
８ 半導体塗料
９ 離形剤
１０ 接着剤BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view extracting and showing one of windings of a stator of a rotating electric machine according to an embodiment of the present invention. FIG. 2 is a sectional view taken along line AA of FIG. FIG. 3 is an explanatory view conceptually showing the structure of a semiconductive tape used in the first embodiment. FIG. 4 is an explanatory view conceptually showing the structure of a semiconductive tape used in the second embodiment. FIG. 5 is an explanatory view conceptually showing the structure of a semiconductive tape used in a third embodiment. FIG. 6 shows Δta after resin curing in Examples and Comparative Examples.
FIG. 4 is a characteristic diagram showing a distribution of nδ characteristics. [Description of Signs] I Winding 4, 41 Semiconductive tape 5 Polyester nonwoven fabric 6, 61 Polyester film 7 Base material 8 Semiconductor paint 9 Release agent 10 Adhesive
フロントページの続き (72)発明者 藤原 伸一 東京都品川区大崎二丁目１番17号 明電ケ ミカル株式会社内Continuation of front page (72) Inventor Shinichi Fujiwara Meidenke 2-1-1-17 Osaki, Shinagawa-ku, Tokyo Mical Corporation
Claims (1)
線において、 基材にポリエステルフィルムとポリエステル不織布の貼
り合せ品を用い、ポリエステルフィルム側に１０2 〜１
０4 Ω−ｃｍの抵抗値になるように調整された半導電塗
料を塗布、乾燥した半導電テープまたは半導電シートを
コイル絶縁の最外層に巻回するとともに鉄心に装着して
構成したことを特徴とする回転電機の巻線。 【請求項２】 〔請求項１〕において、乾燥された半導
電塗料面に離形性の硬化皮膜をコーティングした半導電
テープまたは半導電シートを用いたことを特徴とする回
転電機の巻線。 【請求項３】 全体含浸方式で処理される回転電機の巻
線において、 基材に片面が接着処理されたポリエステルフィルムを用
い、接着処理を施していないフィルム面に１０2 〜１０
4 Ω−ｃｍの抵抗値になるように調整された半導電塗料
を塗布、乾燥した半導電テープまたは半導電シートをコ
イル絶縁の最外層に巻回するとともに鉄心に装着して構
成したことを特徴とする回転電機の巻線。 【請求項４】 〔請求項３〕において、乾燥された半導
電塗料面に離形性の硬化皮膜をコーティングした半導電
テープまたは半導電シートを用いたことを特徴とする回
転電機の巻線。 【請求項５】 全体含浸方式で処理される回転電機の巻
線において、 ポリエステル不織布と、カーボン繊維及びアラミッド繊
維から成り抵抗値１０ 2 〜１０4 Ω−ｃｍの抵抗値を有
する半導電ペーパとを合成樹脂系の接着剤で貼り合せて
成る半導電テープまたは半導電シートをコイル絶縁の最
外層に巻回するとともに鉄心に装着して構成したことを
特徴とする回転電機の巻線。 【請求項６】 〔請求項５〕において、半導電ペーパ面
に離形性の硬化皮膜をコーティングした半導電テープま
たは半導電シートを用いたことを特徴とする回転電機の
巻線。[Claims] 1. A winding of a rotating electric machine treated by a total impregnation method.
In the line Pasting of polyester film and polyester non-woven fabric on substrate
Use a bonded product and add 10Two~ 1
0FourSemiconductive coating adjusted to have a resistance of Ω-cm
Apply and dry the semiconductive tape or semiconductive sheet.
Wind around the outermost layer of coil insulation and attach it to the iron core
A winding of a rotating electric machine, wherein the winding is constituted. 2. The dried semiconductor according to claim 1,
Semiconducting coated releasable cured film on electropaint
Circuit using tape or semiconductive sheet
Winding of a rotary electric machine. 3. A winding of a rotating electric machine processed by a total impregnation method.
In the line Use a polyester film with one side bonded to the substrate
10Two-10
FourSemiconductive paint adjusted to have a resistance of Ω-cm
Apply a dry semiconductive tape or semiconductive sheet.
It can be wound around the outermost layer of
A winding of a rotating electric machine characterized by being formed. 4. The dried semiconductor according to claim 3,
Semiconducting coated releasable cured film on electropaint
Circuit using tape or semiconductive sheet
Winding of a rotary electric machine. 5. A winding of a rotating electric machine processed by a total impregnation method.
In the line Polyester non-woven fabric, carbon fiber and aramid fiber
Made of fiber, resistance value 10 Two-10FourΩ-cm resistance
To the semi-conductive paper with synthetic resin adhesive
A semiconductive tape or sheet made of
That it is wound around the outer layer and attached to the iron core.
Characteristic winding of rotating electric machine. 6. The semiconductive paper surface according to claim 5,
Semiconductive tape coated with a releasable cured film
Or a rotating electric machine characterized by using a semiconductive sheet.
Winding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32502496A JP3472670B2 (en) | 1996-12-05 | 1996-12-05 | Winding of rotating electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32502496A JP3472670B2 (en) | 1996-12-05 | 1996-12-05 | Winding of rotating electric machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10174334A true JPH10174334A (en) | 1998-06-26 |
| JP3472670B2 JP3472670B2 (en) | 2003-12-02 |
Family
ID=18172299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32502496A Expired - Fee Related JP3472670B2 (en) | 1996-12-05 | 1996-12-05 | Winding of rotating electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3472670B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12525837B1 (en) * | 2025-07-28 | 2026-01-13 | National Electric Coil Company, LP | Stress control coating for high voltage conductor insulation |
-
1996
- 1996-12-05 JP JP32502496A patent/JP3472670B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12525837B1 (en) * | 2025-07-28 | 2026-01-13 | National Electric Coil Company, LP | Stress control coating for high voltage conductor insulation |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3472670B2 (en) | 2003-12-02 |
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