JPH11113204A - Stator coil of dynamo-electric machine - Google Patents
Stator coil of dynamo-electric machineInfo
- Publication number
- JPH11113204A JPH11113204A JP26952797A JP26952797A JPH11113204A JP H11113204 A JPH11113204 A JP H11113204A JP 26952797 A JP26952797 A JP 26952797A JP 26952797 A JP26952797 A JP 26952797A JP H11113204 A JPH11113204 A JP H11113204A
- Authority
- JP
- Japan
- Prior art keywords
- stator coil
- insulating layer
- coil
- mica
- mica tape
- 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.)
- Pending
Links
Landscapes
- Insulation, Fastening Of Motor, Generator Windings (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、インバータ装置に
よって制御される車両駆動用主電動機の固定子コイルに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator coil of a vehicle driving main motor controlled by an inverter device.
【０００２】[0002]
【従来の技術】従来、車両駆動用主電動機の固定子コイ
ルは、特開平1−176257 号公報，特開平6−237559 号公
報等に記載のように、マイカペーパとポリイミドフィル
ムとを貼り合わせ形成したマイカテープをコイルの外周
部に所定の回数巻いて絶縁層を形成していた。このよう
に、マイカペーパとポリイミドフィルムとを貼り合わせ
形成したマイカテープを用いるのは、ポリイミドフィル
ムが、高分子材料でありながら、車両駆動用主電動機の
固定子コイルに要求される耐熱性Ｈ種（１８０℃）を満
足し、かつ、耐電圧に対して優れた特性を有し、マイカ
ペーパが、車両駆動用主電動機の長期使用において固定
子コイルの絶縁層に発生する部分放電に対して優れた耐
力を有しているからであった。2. Description of the Related Art Conventionally, a stator coil of a main motor for driving a vehicle is formed by laminating a mica paper and a polyimide film as described in JP-A-1-176257 and JP-A-6-237559. A mica tape was wound around the outer periphery of the coil a predetermined number of times to form an insulating layer. The use of the mica tape formed by laminating the mica paper and the polyimide film as described above is based on the fact that the polyimide film is a polymer material, but the heat-resistant H class required for the stator coil of the vehicle driving main motor ( 180 ° C) and has excellent withstand voltage characteristics, and the mica paper has an excellent proof strength against partial discharge generated in the insulating layer of the stator coil during long-term use of the main motor for driving a vehicle. It is because it has.
【０００３】[0003]
【発明が解決しようとする課題】上述の固定子コイルに
あっては、その固定子コイルを備えた車両駆動用主電動
機がインバータ装置で制御された場合、上述のマイカテ
ープを亀甲状のコイルに巻いたときに生じるマイカテー
プの初層と次層との間、或いは、マイカペーパとポリイ
ミドフィルムとの間のボイド（隙間）部分に、部分放電
が頻繁に生じる恐れが判明した。すなわち、これは、固
定子コイルに印加される電圧にインバータ装置中のスイ
ッチング素子のＯＮ−ＯＦＦ時における過渡電圧が重畳
されているからであった。In the above-described stator coil, when the vehicle driving main motor having the stator coil is controlled by an inverter, the above-mentioned mica tape is converted into a turtle-shaped coil. It has been found that partial discharge frequently occurs between the first layer and the next layer of the mica tape or the void (gap) between the mica paper and the polyimide film when the coil is wound. That is, this is because the transient voltage when the switching element in the inverter device is turned on and off is superimposed on the voltage applied to the stator coil.
【０００４】ボイド部分に部分放電が頻繁に生じてしま
うと、部分放電に対する耐力が弱いポリイミドフィルム
は、その表面が浸食され、その機能が低下してしまい、
固定子コイルの絶縁寿命を著しく低下させてしまう恐れ
がある。If partial discharge frequently occurs in the void portion, the surface of a polyimide film having a low resistance to partial discharge is eroded, and its function is deteriorated.
The insulation life of the stator coil may be significantly reduced.
【０００５】本発明は、固定子コイルに印加される過大
な電圧によって、固定子コイルの絶縁層のボイド部分に
頻繁に生じる恐れのある部分放電に対する耐力を備え、
固定子コイルの絶縁寿命を向上することのできる信頼性
の高い回転電機の固定子コイルの提供を目的とするもの
である。According to the present invention, there is provided a resistance to a partial discharge which may frequently occur in a void portion of an insulating layer of a stator coil due to an excessive voltage applied to the stator coil,
It is an object of the present invention to provide a highly reliable stator coil of a rotating electric machine that can improve the insulation life of the stator coil.
【０００６】[0006]
【課題を解決するための手段】本発明に係る固定子コイ
ルは、固定子コイルに印加される過大な電圧によって、
固定子コイルの絶縁層のボイド部分に頻繁に生じる恐れ
のある部分放電に対する耐力を備えるために、マイカペ
ーパと無機物質を充填したフィルム（裏打材）とを貼り
合わせ形成したマイカテープにより絶縁層を形成した。SUMMARY OF THE INVENTION A stator coil according to the present invention is provided by an excessive voltage applied to the stator coil.
In order to provide a strength against partial discharge that may frequently occur in the void portion of the stator coil insulation layer, an insulation layer is formed by mica tape that is formed by bonding mica paper and a film (backing material) filled with an inorganic substance. did.
【０００７】詳細には、マイカペーパと無機物質として
シリカ（ＳｉＯ2 ）を充填したポリイミドフィルムとを
貼り合わせ形成したマイカテープ、或いは、マイカペー
パと無機物質としてアルミナ（Ａｌ2Ｏ3）を充填したポ
リイミドフィルムとを貼り合わせ形成したマイカテー
プ、或いは、マイカペーパと無機物質としてシリカ（Ｓ
ｉＯ2 ）を充填したポリエステルフィルムとを貼り合わ
せ形成したマイカテープ、或いは、マイカペーパと無機
物質としてアルミナ（Ａｌ2Ｏ3）を充填したポリエステ
ルフィルムとを貼り合わせ形成したマイカテープのいず
れかによって固定子コイルの絶縁層を形成した。More specifically, a mica tape formed by laminating mica paper and a polyimide film filled with silica (SiO 2 ) as an inorganic substance, or a polyimide film filled with mica paper and alumina (Al 2 O 3 ) as an inorganic substance Mica tape or mica paper and silica (S
The stator is made of either a mica tape formed by laminating a polyester film filled with iO 2 ) or a mica tape formed by laminating a mica paper and a polyester film filled with alumina (Al 2 O 3 ) as an inorganic substance. An insulating layer of the coil was formed.
【０００８】[0008]
【発明の実施の形態】以下、図１〜３を用いて実施例を
説明する。図１は、マイカテープの構成図、図２は、図
１のマイカテープを巻いた固定子コイルの外観図、図３
は、図２の固定子コイルの絶縁構成を示した斜視図であ
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment will be described below with reference to FIGS. 1 is a configuration diagram of a mica tape, FIG. 2 is an external view of a stator coil wound with the mica tape of FIG. 1, and FIG.
FIG. 3 is a perspective view showing an insulation configuration of the stator coil of FIG. 2.
【０００９】固定子コイル１は、コイル４と、この外周
部に施した絶縁層と、この絶縁層の外周部に施した補強
層からなっている。このうち、コイル４は、導体２を回
転電機の仕様に応じて複数回巻いて形成し、亀甲状に成
形したものであり、その外周部には、ポリイミドフィル
ム又はガラスロービングを巻いてワニスの塗布し硬化し
た絶縁被覆３を備えている。The stator coil 1 includes a coil 4, an insulating layer provided on an outer peripheral portion thereof, and a reinforcing layer provided on an outer peripheral portion of the insulating layer. The coil 4 is formed by winding the conductor 2 a plurality of times in accordance with the specification of the rotating electric machine and forming it into a turtle-shape. The outer periphery of the coil 4 is coated with a polyimide film or glass roving and coated with varnish. The cured insulating coating 3 is provided.
【００１０】絶縁層は、マイカテープ５をコイル４の外
周部に回転電機の電圧階級に応じて所定回数（例えば、
定格電圧１．５ｋＶ級回転電機の固定子コイルでは、マ
イカテープ５をコイル４に対してハーフラップ２回）巻
いて形成したものであり、そのマイカテープ５には、マ
イカペーパ７と、無機充填材としてシリカ（ＳｉＯ2）
を添加したポリイミドフィルム９とを接着ワニス８によ
り貼り合わせ形成したものを使用している。The insulating layer is formed by applying the mica tape 5 to the outer periphery of the coil 4 a predetermined number of times (for example,
The stator coil of the rated voltage 1.5 kV class rotary electric machine is formed by winding the mica tape 5 around the coil 4 by half wrap twice), and the mica tape 5 includes the mica paper 7 and the inorganic filler. As silica (SiO 2 )
And a polyimide film 9 to which is added an adhesive varnish 8.
【００１１】補強層は、ガラステープ６を、マイカテー
プ５を巻いたコイル４の外周部に所定回数（例えば、マ
イカテープ５を巻いたコイル４に対してハーフラップ１
回）巻いて形成したものであって、固定子コイル１を固
定子鉄心のスロットに納めるとき、コイル４の外周部に
形成した絶縁層の破損を防ぐためのものである。The reinforcing layer is formed by applying a glass tape 6 around the coil 4 around which the mica tape 5 is wound a predetermined number of times (for example, half-wrapping the coil 4 around which the mica tape 5 is wound).
The stator coil 1 is wound around the coil 4 to prevent the insulation layer formed on the outer periphery of the coil 4 from being damaged when the stator coil 1 is placed in the slot of the stator core.
【００１２】また、上記構成の固定子コイル１は、次の
ように製造され、固定子鉄心のスロットに収められてい
る。Further, the stator coil 1 having the above configuration is manufactured as follows, and is housed in a slot of the stator core.
【００１３】まず、マイカペーパ７と、無機充填材とし
てシリカ（ＳｉＯ2 ）を添加したポリイミドフィルム９
とを接着ワニス８により貼り合わせ形成したマイカテー
プ５を用意しておく。次に、ポリイミドフィルム又はガ
ラスロービングを導体２の外周部に巻いてワニスの塗布
し硬化する。この後、絶縁被覆３を備えた導体２を回転
電機の仕様に応じて複数回巻き、亀甲状に成形してコイ
ル４を得る。次に、予め用意したマイカテープ５を亀甲
状のコイル４に巻き絶縁層を形成する。この後、ガラス
テープ６を巻き補強層を形成して固定子コイル１を得
る。First, mica paper 7 and a polyimide film 9 containing silica (SiO 2 ) as an inorganic filler are added.
A mica tape 5 is prepared by laminating the mica tape 5 with an adhesive varnish 8. Next, a polyimide film or glass roving is wound around the outer periphery of the conductor 2 and a varnish is applied and cured. Thereafter, the conductor 2 provided with the insulating coating 3 is wound a plurality of times in accordance with the specification of the rotating electric machine, and is shaped like a turtle to obtain the coil 4. Next, a mica tape 5 prepared in advance is wound around the turtle-shaped coil 4 to form an insulating layer. Thereafter, the reinforcing layer is formed by winding the glass tape 6 to obtain the stator coil 1.
【００１４】次に、このようにして得られた固定子コイ
ル１を固定子鉄心のスロット内に所定の配置で収め、樹
脂注入用タンク内に封入し、エポキシ系ワニスを真空含
浸する。これにより、エポキシ系ワニスは、マイカテー
プ５の層間，コイル４とマイカテープ５の間，固定子コ
イル１と固定子鉄心のスロット間に充填できる。Next, the stator coil 1 thus obtained is placed in a predetermined position in a slot of the stator core, sealed in a resin injection tank, and vacuum impregnated with an epoxy varnish. Thus, the epoxy varnish can be filled between the layers of the mica tape 5, between the coil 4 and the mica tape 5, and between the slots of the stator coil 1 and the stator core.
【００１５】その後、固定子鉄心を所定のスケジュール
に沿って加熱乾燥し、充填したワニスを硬化する。これ
により、固定子鉄心が得られる。Thereafter, the stator core is heated and dried in accordance with a predetermined schedule to cure the filled varnish. Thereby, a stator core is obtained.
【００１６】以上本実施例によれば、固定子コイル１の
絶縁層を、マイカペーパ７と、無機充填材としてシリカ
(ＳiＯ2)を添加したポリイミドフィルム９とを接着ワニ
ス８により貼り合わせ形成されたマイカテープ５により
形成したので、固定子コイル１に印加される過大な電圧
によって、固定子コイル１の絶縁層のボイド部分に頻繁
に生じる恐れのある部分放電に対する耐力を得ることが
でき、固定子コイル１の絶縁寿命が向上する。すなわ
ち、ポリイミドフィルム９に無機充填材としてシリカ
（ＳｉＯ2 ）を添加することにより、部分放電に対する
耐力が弱いポリイミドフィルム９に部分放電に対する耐
力が付与でき、部分放電が頻繁に発生したとしても、ポ
リイミドフィルム９の表面の浸食を抑えるので、ポリイ
ミドフィルム９の持つ機能を損なうことがない。As described above, according to the present embodiment, the insulating layer of the stator coil 1 is made of mica paper 7 and silica as an inorganic filler.
Since the polyimide film 9 to which (SiO 2 ) was added and the mica tape 5 bonded with the adhesive varnish 8 were used, an excessive voltage applied to the stator coil 1 caused the insulating layer of the stator coil 1 Withstand strength against partial discharge that may frequently occur in the void portion can be obtained, and the insulation life of the stator coil 1 is improved. That is, by adding silica (SiO 2 ) as an inorganic filler to the polyimide film 9, the polyimide film 9 having a low proof strength against partial discharges can be provided with proof strength against partial discharges. Since the erosion of the surface of the film 9 is suppressed, the function of the polyimide film 9 is not impaired.
【００１７】また、本実施例によれば、固定子コイル１
の絶縁層に無機充填材を添加しているるので、絶縁層の
熱伝導率も向上する。Also, according to the present embodiment, the stator coil 1
Since the inorganic filler is added to the insulating layer, the thermal conductivity of the insulating layer is also improved.
【００１８】ここで、本発明者らは、本実施例の固定子
コイルと従来の固定子コイルの特性を比較するために、
絶縁破壊寿命の評価試験を実施した。Here, the inventors of the present invention compared the characteristics of the stator coil of the present embodiment with those of the conventional stator coil.
An insulation breakdown life evaluation test was performed.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１は評価試験に用いた固定子コイルの絶
縁特性を示した特性表、図４は表１に示した固定子コイ
ルの印加電圧に対する電圧印加時間の関係図である。Table 1 is a characteristic table showing the insulation characteristics of the stator coil used in the evaluation test, and FIG. 4 is a diagram showing the relationship between the voltage applied to the stator coil shown in Table 1 and the voltage application time.
【００２１】表１において、固定子コイルの絶縁層の出
来具合を示す誘電正接値，部分放電開始電圧値，初期絶
縁破壊電圧値を比較すると、本実施例により得られた固
定子コイルは、従来の固定子コイルよりも若干数値は低
くなっているが、両者の固定子コイルともほぼ同等の特
性を有していると言ってよい。In Table 1, the dielectric loss tangent value, the partial discharge starting voltage value, and the initial breakdown voltage value indicating the condition of the insulating layer of the stator coil are compared. Although the numerical values are slightly lower than those of the stator coils, it can be said that both stator coils have substantially the same characteristics.
【００２２】また、２つの固定子コイルを用いた絶縁破
壊寿命の評価試験としては、各固定子コイルに表１で示
した初期絶縁破壊電圧から６ｋＶまでの交流電圧を印加
した場合における絶縁破壊時間を周波数の加速試験によ
り測定し、６ｋＶの交流電圧を印加し続けた場合におけ
る絶縁破壊時間を評価した。As an evaluation test of the dielectric breakdown life using two stator coils, the dielectric breakdown time when an AC voltage from the initial dielectric breakdown voltage shown in Table 1 to 6 kV was applied to each stator coil was used. Was measured by a frequency acceleration test, and the dielectric breakdown time when the AC voltage of 6 kV was continuously applied was evaluated.
【００２３】ここで、周波数の加速試験とは、車両駆動
用主電動機の使用年月（約１５年）に見合うように、周
波数の値を上げて行う試験のことである。Here, the frequency acceleration test is a test in which the value of the frequency is increased so as to match the use date (about 15 years) of the main motor for driving the vehicle.
【００２４】表１から部分放電開始電圧は、３.４〜３.
５ｋＶであるので、６ｋＶの電圧印加の場合は、固定子
コイルの絶縁層中で頻繁に部分放電が発生しているもの
と考えられる。上記の試験の結果、図４に示しているよ
うに、６ｋＶの交流電圧の印加時における絶縁破壊時間
は、従来の固定子コイルで１０4 時間であるのに対し、
本実施例の固定子コイルでは、１０5 時間であることが
確認できた。From Table 1, the partial discharge starting voltage is 3.4 to 3.
Since the voltage is 5 kV, when a voltage of 6 kV is applied, it is considered that partial discharge frequently occurs in the insulating layer of the stator coil. As a result of the above test, as shown in FIG. 4, the dielectric breakdown time when applying an AC voltage of 6 kV is 10 4 hours for the conventional stator coil,
The stator coil of the present embodiment, it was confirmed that the 10 5 h.
【００２５】これにより、ポリイミドフィルム９に無機
充填材としてシリカ（ＳｉＯ2 ）を添加することによ
り、部分放電に対する耐力が弱いポリイミドフィルム９
に部分放電に対する耐力が付与でき、部分放電が頻繁に
発生したとしても、ポリイミドフィルム９の表面の浸食
を抑えるので、ポリイミドフィルム９の持つ機能を損な
うことが確認できた。Thus, by adding silica (SiO 2 ) as an inorganic filler to the polyimide film 9, the polyimide film 9 having a low resistance to partial discharge is obtained.
Thus, it was confirmed that the function of the polyimide film 9 was impaired because erosion of the surface of the polyimide film 9 was suppressed even if partial discharge was frequently generated and frequent occurrence of partial discharge was suppressed.
【００２６】尚、本実施例では、無機充填材としてシリ
カ（ＳｉＯ2 ）を挙げて説明したが、前記無機充填材と
してアルミナ（Ａｌ2Ｏ3）を使用し、これをポリイミド
フィルム９に添加しても、前例と同様の効果を得ること
も確認している。In this embodiment, silica (SiO 2 ) has been described as the inorganic filler. However, alumina (Al 2 O 3 ) was used as the inorganic filler, and this was added to the polyimide film 9. However, it has been confirmed that the same effect as the previous example can be obtained.
【００２７】また、本実施例は、車両駆動用主電動機以
外の回転電機に用いる固定子コイルにおいても同様に実
施できる。例えば、固定子コイルの主絶縁としてマイカ
ペーパとポリエステルフィルムとを接着ワニスで貼り合
わせ形成したマイカテープを用いる耐熱性の低い回転電
機の固定子コイルにおいても、前述した無機充填材であ
るシリカ（ＳｉＯ2 ）又はアルミナ（Ａｌ2Ｏ3）のいず
れかをポリエステルフィルムに添加することにより、前
例と同様の効果を得ることができる。This embodiment can be similarly applied to a stator coil used for a rotating electric machine other than the main motor for driving a vehicle. For example, even in a stator coil of a rotating electric machine having low heat resistance using a mica tape formed by bonding mica paper and a polyester film with an adhesive varnish as main insulation of the stator coil, silica (SiO 2) which is an inorganic filler described above is used. ) Or alumina (Al 2 O 3 ) can be added to the polyester film to obtain the same effect as the previous example.
【００２８】[0028]
【発明の効果】本発明に係る固定子コイルは、マイカペ
ーパと無機物質を充填したフィルムとを貼り合わせ形成
したマイカテープにより絶縁層を形成したので、固定子
コイルに印加される過大な電圧によって、固定子コイル
の絶縁層のボイド部分に頻繁に生じる恐れのある部分放
電に対する耐力を得ることができる。The stator coil according to the present invention has an insulating layer formed of mica tape formed by laminating a mica paper and a film filled with an inorganic substance. It is possible to obtain a strength against partial discharge which may frequently occur in a void portion of the insulating layer of the stator coil.
【図１】マイカテープの構成図。FIG. 1 is a configuration diagram of a mica tape.
【図２】図１のマイカテープを巻いた固定子コイルの外
観図。FIG. 2 is an external view of a stator coil wound with the mica tape of FIG. 1;
【図３】図３は図２の固定子コイルの絶縁構成を示した
斜視図。FIG. 3 is a perspective view showing an insulating configuration of the stator coil of FIG. 2;
【図４】固定子コイルの印加電圧に対する電圧印加時間
の関係図。FIG. 4 is a diagram showing a relationship between a voltage applied to a stator coil and a voltage application time.
１…固定子コイル、２…導体、３…絶縁被覆、４…コイ
ル、５…マイカテープ、６…ガラステープ、７…マイカ
ペーパ、８…接着ワニス、９…無機充填材を添加したポ
リイミドフィルム。DESCRIPTION OF SYMBOLS 1 ... Stator coil, 2 ... Conductor, 3 ... Insulation coating, 4 ... Coil, 5 ... Mica tape, 6 ... Glass tape, 7 ... Mica paper, 8 ... Adhesive varnish, 9 ... Polyimide film which added inorganic filler.
Claims (7)
とを有する絶縁材により絶縁層を形成してなる回転電機
の固定子コイル。1. A stator coil for a rotating electric machine comprising an insulating layer formed of an insulating material having mica paper and a backing material filled with an inorganic substance.
ムとを貼り合わせ形成したマイカテープをコイルの外周
部に所定の回数巻いて絶縁層を形成してなる回転電機の
固定子コイル。2. A stator coil for a rotating electric machine, wherein a mica tape formed by laminating a mica paper and a film filled with an inorganic substance is wound around an outer periphery of a coil a predetermined number of times to form an insulating layer.
してシリカ（ＳｉＯ2 ）を充填したポリイミドフィルム
とを貼り合わせ形成したマイカテープにより形成してな
る請求項２記載の回転電機の固定子コイル。3. The stator coil of a rotating electric machine according to claim 2, wherein said insulating layer is formed by a mica tape formed by bonding mica paper and a polyimide film filled with silica (SiO 2 ) as an inorganic substance.
してアルミナ（Ａｌ2Ｏ3）を充填したポリイミドフィル
ムとを貼り合わせ形成したマイカテープにより形成して
なる請求項２記載の回転電機の固定子コイル。4. The stator for a rotating electric machine according to claim 2, wherein said insulating layer is formed by a mica tape formed by bonding mica paper and a polyimide film filled with alumina (Al 2 O 3 ) as an inorganic substance. coil.
してシリカ（ＳｉＯ2 ）を充填したポリエステルフィル
ムとを貼り合わせ形成したマイカテープにより形成して
なる請求項２記載の回転電機の固定子コイル。5. The stator coil for a rotating electric machine according to claim 2, wherein said insulating layer is formed by a mica tape formed by laminating mica paper and a polyester film filled with silica (SiO 2 ) as an inorganic substance.
してアルミナ（Ａｌ2Ｏ3）を充填したポリエステルフィ
ルムとを貼り合わせ形成したマイカテープにより形成し
てなる請求項２記載の回転電機の固定子コイル。6. The stator for a rotating electric machine according to claim 2, wherein said insulating layer is formed by a mica tape formed by laminating mica paper and a polyester film filled with alumina (Al 2 O 3 ) as an inorganic substance. coil.
定子コイルを備えてなる回転電機。7. A rotating electric machine comprising the stator coil according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26952797A JPH11113204A (en) | 1997-10-02 | 1997-10-02 | Stator coil of dynamo-electric machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26952797A JPH11113204A (en) | 1997-10-02 | 1997-10-02 | Stator coil of dynamo-electric machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11113204A true JPH11113204A (en) | 1999-04-23 |
Family
ID=17473640
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26952797A Pending JPH11113204A (en) | 1997-10-02 | 1997-10-02 | Stator coil of dynamo-electric machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11113204A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034991A1 (en) * | 2007-09-14 | 2009-03-19 | Shin-Etsu Chemical Co., Ltd. | Axial gap type coreless rotating machine |
| BE1020511A4 (en) * | 2010-11-10 | 2013-12-03 | Cogebi S A | TIRE BASED ON MICA. |
| WO2014062266A2 (en) * | 2012-08-02 | 2014-04-24 | Remy Technologies, L.L.C. | Stator including conductors provided with a ceramic covering |
| US9484125B2 (en) | 2010-11-10 | 2016-11-01 | Cogebi S.A. | Mica-based strip |
| US20160344243A1 (en) * | 2015-05-19 | 2016-11-24 | Hitachi, Ltd. | Dynamo-Electric Machine |
-
1997
- 1997-10-02 JP JP26952797A patent/JPH11113204A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009034991A1 (en) * | 2007-09-14 | 2009-03-19 | Shin-Etsu Chemical Co., Ltd. | Axial gap type coreless rotating machine |
| JP2009072010A (en) * | 2007-09-14 | 2009-04-02 | Shin Etsu Chem Co Ltd | Axial gap type coreless rotating machine |
| US8299676B2 (en) | 2007-09-14 | 2012-10-30 | Shin-Etsu Chemical Co., Ltd. | Axial gap type coreless rotating machine |
| TWI415367B (en) * | 2007-09-14 | 2013-11-11 | Shinetsu Chemical Co | Axial clearance type without core rotating machine |
| BE1020511A4 (en) * | 2010-11-10 | 2013-12-03 | Cogebi S A | TIRE BASED ON MICA. |
| US9484125B2 (en) | 2010-11-10 | 2016-11-01 | Cogebi S.A. | Mica-based strip |
| WO2014062266A2 (en) * | 2012-08-02 | 2014-04-24 | Remy Technologies, L.L.C. | Stator including conductors provided with a ceramic covering |
| WO2014062266A3 (en) * | 2012-08-02 | 2014-07-17 | Remy Technologies, L.L.C. | Stator including conductors provided with a ceramic covering |
| US20160344243A1 (en) * | 2015-05-19 | 2016-11-24 | Hitachi, Ltd. | Dynamo-Electric Machine |
| JP2016220359A (en) * | 2015-05-19 | 2016-12-22 | 株式会社日立製作所 | Rotary electric machine |
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