JP2011244672A - Split stator - Google Patents

Split stator Download PDF

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JP2011244672A
JP2011244672A JP2010117356A JP2010117356A JP2011244672A JP 2011244672 A JP2011244672 A JP 2011244672A JP 2010117356 A JP2010117356 A JP 2010117356A JP 2010117356 A JP2010117356 A JP 2010117356A JP 2011244672 A JP2011244672 A JP 2011244672A
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yoke
teeth
split stator
winding
joined
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Narifumi Tojima
成文 遠嶋
Kazutaka Doke
和隆 道家
Yuji Maekawa
祐司 前川
Hiroyuki Taira
裕行 平
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IHI Corp
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IHI Corp
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Abstract

PROBLEM TO BE SOLVED: To provide a split stator capable of enhancing motor output and manufacturing yields thereof.SOLUTION: As a constitution of a split stator, the split stator includes: a yoke section formed with a plurality of yoke pieces, which is annularly arranged and joined to one another; a plurality of teeth joined to a radially inner end of the yoke section; and windings wound around the plurality of teeth by a distributed winding method. Further, it is employed such a constitution for the split stator that each of the plurality of yoke pieces and the plurality of teeth is formed of oriented electrical steel sheets having an easy axis of magnetization lying in the same direction as a flow direction of magnetic flux.

Description

本発明は、分割型ステータに関する。  The present invention relates to a split stator.

近年では、家電機器等に搭載される数kWクラスのモータとして、集中巻き方式の埋込磁石同期モータ(IPMモータ)が多く採用されている。一方、数十kWクラス以上の高出力IPMモータでは、集中巻き方式を採用した場合に、原理上、ステータの電流磁界に高調波成分が重畳し、磁石が埋め込まれているロータの渦電流が大きくなるという問題が生じることから、ステータの電流磁界に高調波成分が重畳しない分布巻き方式が採用される傾向にある。   In recent years, concentrated winding type synchronous magnet synchronous motors (IPM motors) are often used as motors of several kW class mounted on home appliances and the like. On the other hand, in a high-power IPM motor of several tens of kW class or more, when a concentrated winding method is adopted, in principle, harmonic components are superimposed on the current magnetic field of the stator, and the eddy current of the rotor in which the magnet is embedded is large. Therefore, a distributed winding method in which a harmonic component is not superimposed on the stator current magnetic field tends to be employed.

さらに、近年では、IPMモータに限らず、ステータコアを従来の一体型コアから分割型コアとすることで巻線占積率及びモータ効率の向上を図ることの可能な分割型ステータを採用することが主流となっている。例えば、下記特許文献1及び2には、ステータコアを円環状のヨーク部と複数のティース部とに分割し、ヨーク部及びティース部の形成に方向性電磁鋼板を用いる構成を採用した分割型ステータが開示されている。   Further, in recent years, not only IPM motors but also split stators that can improve the winding space factor and motor efficiency by changing the stator core from a conventional integral core to a split core. It has become mainstream. For example, in Patent Documents 1 and 2 below, there is a split-type stator that employs a configuration in which a stator core is divided into an annular yoke portion and a plurality of tooth portions, and a directional electromagnetic steel sheet is used to form the yoke portion and the tooth portions. It is disclosed.

特開2006−197779号公報JP 2006-197779 A 特開2007−209070号公報JP 2007-209070 A

従来の分割型ステータとしては、上記特許文献1及び2に開示された分割型ステータの他、ヨーク部が複数のヨーク片に分割され、ヨーク部の形成に無方向性電磁鋼板を用い、ティース部の形成に方向性電磁鋼板を用いるタイプや、ヨーク部が複数のヨーク片に分割され、ヨーク部の形成に方向性電磁鋼板を用い、ティース部の形成に無方向性電磁鋼板を用いるタイプ、ヨーク部は一体型であり、ヨーク部の形成に無方向性電磁鋼板を用い、ティース部の形成に方向性電磁鋼板を用いるタイプなどが挙げられる。   As a conventional split type stator, in addition to the split type stator disclosed in Patent Documents 1 and 2, the yoke part is divided into a plurality of yoke pieces, and a non-oriented electrical steel sheet is used to form the yoke part. A type that uses a directional electrical steel sheet for forming the yoke, a yoke part that is divided into a plurality of yoke pieces, a directional electrical steel sheet that is used for forming the yoke part, and a non-oriented electrical steel sheet that is used for forming the tooth part. The part is an integral type, and a non-oriented electrical steel sheet is used for forming the yoke part and a directional electrical steel sheet is used for forming the tooth part.

これらのタイプの分割型ステータに共通することは、方向性電磁鋼板と無方向性電磁鋼板の2種類の電磁鋼板を用いるため製造歩留まりが悪く、また、ヨーク部とティース部とのいずれか一方の形成に無方向性電磁鋼板を用いるため、ヨーク部とティース部との接合部の磁気抵抗が大きくなり、モータ出力が低下するという問題を抱えている点である。   What is common to these types of split-type stators is that the production yield is poor because of the use of two types of magnetic steel sheets, directional magnetic steel sheets and non-oriented magnetic steel sheets, and either one of the yoke part and the tooth part is used. Since the non-oriented electrical steel sheet is used for forming, the magnetic resistance of the joint portion between the yoke portion and the tooth portion is increased, and the motor output is reduced.

本発明は上述した事情に鑑みてなされたものであり、製造歩留まり及びモータ出力の向上を図ることの可能な分割型ステータを提供することを目的とする。  The present invention has been made in view of the above-described circumstances, and an object of the present invention is to provide a split-type stator capable of improving manufacturing yield and motor output.

上記課題を解決するために、本発明では、分割型ステータに係る解決手段として、複数のヨーク片が円環状に接合されてなるヨーク部と、前記ヨーク部の径方向内側に接合された複数のティース部と、前記ティース部に対して分布巻き方式で巻回された巻線とを備え、前記ヨーク片の各々及び前記ティース部の各々は、磁束の流れ方向と一致する磁化容易方向を有する方向性電磁鋼板を用いて形成されていることを特徴とする。   In order to solve the above-described problem, in the present invention, as a solving means related to the split stator, a yoke part in which a plurality of yoke pieces are joined in an annular shape and a plurality of parts joined radially inward of the yoke part are provided. A direction including a tooth portion and a winding wound around the tooth portion in a distributed winding manner, wherein each of the yoke pieces and each of the tooth portions has an easy magnetization direction that coincides with a flow direction of magnetic flux. It is formed using a heat-resistant electrical steel sheet.

本発明に係る分割型ステータによれば、ヨーク部(ヨーク片)及びティース部の形成に方向性電磁鋼板を用いるため、ヨーク部とティース部との接合部の磁気抵抗を低減でき、モータ出力の向上を図ることができると共に、方向性電磁鋼板という1種類の電磁鋼板のみを用いるため製造歩留まりの向上を図ることができる。  According to the split stator according to the present invention, since the directional electromagnetic steel sheet is used for forming the yoke portion (yoke piece) and the tooth portion, the magnetic resistance of the joint portion between the yoke portion and the tooth portion can be reduced, and the motor output can be reduced. In addition to improving the manufacturing yield, only one type of magnetic steel sheet called a grain-oriented electrical steel sheet is used.

本実施形態における分割型ステータ1の構成概略図である。1 is a schematic configuration diagram of a split stator 1 in the present embodiment. ティース部3からティース先端部3aを分割し、このティース先端部3aをティース部3に対して着脱自在とする構成を採用した変形例に関する説明図である。It is explanatory drawing regarding the modification which employ | adopted the structure which divides | segments the teeth front-end | tip part 3a from the teeth part 3, and makes this teeth front-end | tip part 3a detachable with respect to the teeth part 3. FIG. 巻きコア5を用いてヨーク部2を固定する構成を採用した変形例に関する説明図である。It is explanatory drawing regarding the modification which employ | adopted the structure which fixes the yoke part 2 using the winding core 5. FIG. ヨーク部2とティース部3との接合部6に形成された隙間に圧粉磁性材を含む接着剤7を充填する構成を採用した変形例に関する説明図である。It is explanatory drawing regarding the modification which employ | adopted the structure which fills the clearance gap formed in the junction part 6 of the yoke part 2 and the teeth part 3 with the adhesive agent 7 containing a dust magnetic material. ティース部3の接合部6側に直線先細形状(テーパ形状)を有する嵌合雄部3aを設ける構成を採用した変形例に関する説明図である。It is explanatory drawing regarding the modification which employ | adopted the structure which provides the fitting male part 3a which has a linear taper shape (taper shape) in the junction part 6 side of the teeth part 3. FIG.

以下、図面を参照して、本発明の一実施形態について説明する。
図1は、本実施形態における分割型ステータ1の構成概略図である。本実施形態における分割型ステータ1は、巻線スロット数「12」、極数「2」の分割型ステータであり、12個のヨーク片2aが円環状に接合されてなるヨーク部2と、このヨーク部2の径方向内側に接合(嵌合)された12個のティース部3と、これらティース部3に対して分布巻き方式で巻回されたU相巻線4Ua、4Ub、V相巻線4Va、4Vb、及びW相巻線4Wa、4Wbとから構成されている。
Hereinafter, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic configuration diagram of a split stator 1 according to this embodiment. The split stator 1 in this embodiment is a split stator having a winding slot number “12” and a pole number “2”, and a yoke portion 2 formed by joining 12 yoke pieces 2 a in an annular shape, Twelve teeth portions 3 joined (fitted) radially inside the yoke portion 2, and U-phase windings 4Ua, 4Ub, V-phase windings wound around the teeth portions 3 in a distributed winding manner 4Va, 4Vb, and W-phase windings 4Wa, 4Wb.

各ヨーク片2a及びティース部3は、珪素鋼等からなる電磁鋼板を積層することで独立に形成された分割コア部材であり、互いに組み合わされて1体のステータコアを形成するものである。本実施形態において、ティース部3の各々は、磁束の流れ方向(図1中の符号D1)と一致する磁化容易方向(図1中の符号D2)を有する方向性電磁鋼板を用いて形成されており、また、ヨーク片2aの各々も磁束の流れ方向D1と一致する磁化容易方向(図1中の符号D3)を有する方向性電磁鋼板を用いて形成されている。   Each yoke piece 2a and teeth portion 3 are divided core members formed independently by laminating electromagnetic steel plates made of silicon steel or the like, and are combined with each other to form a single stator core. In the present embodiment, each of the tooth portions 3 is formed using a grain-oriented electrical steel sheet having an easy magnetization direction (symbol D2 in FIG. 1) that matches the flow direction of magnetic flux (symbol D1 in FIG. 1). In addition, each of the yoke pieces 2a is also formed using a grain-oriented electrical steel sheet having an easy magnetization direction (symbol D3 in FIG. 1) coinciding with the magnetic flux flow direction D1.

図1では、1つのヨーク片2aに対して1つのティース部3が接合されている状態を図示しているが、1つのヨーク片2aに対して複数のティース部3が接合される構成を採用しても良い。また、ヨーク片2a同士を溶接によって接合することでヨーク部2を形成しても良いし、或いは、ヨーク片2a同士を嵌合することでヨーク部2を形成しても良い。  FIG. 1 shows a state in which one tooth portion 3 is joined to one yoke piece 2a, but a configuration in which a plurality of tooth portions 3 are joined to one yoke piece 2a is adopted. You may do it. Moreover, the yoke part 2 may be formed by joining the yoke pieces 2a to each other by welding, or the yoke part 2 may be formed by fitting the yoke pieces 2a together.

図1に示すように、ヨーク部2の径方向内側に12個のティース部3が一定間隔で嵌合されることで(言い換えれば、各ヨーク片2aの径方向内側にティース部3が1対1で嵌合されることで)、隣り合うティース部3の間に計12個の巻線スロットS1〜S12が形成される。一方のU相巻線4Uaは、巻線スロットS1からS6までの間に配置された5個のティース部3を跨ぐように分布巻きされており、他方のU相巻線4Ubは、巻線スロットS7からS12までの間に配置された5個のティース部3を跨ぐように分布巻きされている。   As shown in FIG. 1, twelve teeth portions 3 are fitted at a constant interval on the radially inner side of the yoke portion 2 (in other words, a pair of teeth portions 3 is formed on the radially inner side of each yoke piece 2a. 1), a total of 12 winding slots S1 to S12 are formed between the adjacent tooth portions 3. One U-phase winding 4Ua is distributedly wound so as to straddle the five tooth portions 3 arranged between the winding slots S1 to S6, and the other U-phase winding 4Ub Distributed winding is performed so as to straddle the five tooth portions 3 arranged between S7 and S12.

また、一方のV相巻線4Vaは、巻線スロットS3からS8までの間に配置された5個のティース部3を跨ぐように分布巻きされており、他方のV相巻線4Vbは、巻線スロットS9からS2までの間に配置された5個のティース部3を跨ぐように分布巻きされている。さらに、一方のW相巻線4Waは、巻線スロットS5からS10までの間に配置された5個のティース部3を跨ぐように分布巻きされており、他方のW相巻線4Wbは、巻線スロットS11からS4までの間に配置された5個のティース部3を跨ぐように分布巻きされている。   Further, one V-phase winding 4Va is distributedly wound so as to straddle the five teeth portions 3 arranged between the winding slots S3 to S8, and the other V-phase winding 4Vb is wound around Distributed winding is performed so as to straddle the five tooth portions 3 arranged between the line slots S9 to S2. Furthermore, one W-phase winding 4Wa is distributedly wound so as to straddle the five tooth portions 3 arranged between the winding slots S5 to S10, and the other W-phase winding 4Wb Distributed winding is performed so as to straddle the five tooth portions 3 arranged between the line slots S11 to S4.

以上のような構成を採用した本実施形態における分割型ステータ1によると、ヨーク部2(ヨーク片2a)及びティース部3の形成に方向性電磁鋼板を用いるため、ヨーク部2とティース部3との接合部の磁気抵抗を低減でき、モータ出力の向上を図ることができると共に、方向性電磁鋼板という1種類の電磁鋼板のみを用いるため製造歩留まりの向上を図ることができる。  According to the split stator 1 in the present embodiment adopting the above-described configuration, the directional electromagnetic steel sheet is used for forming the yoke portion 2 (yoke piece 2a) and the tooth portion 3, and therefore the yoke portion 2 and the tooth portion 3 The magnetic resistance of the joint portion can be reduced, the motor output can be improved, and the production yield can be improved because only one type of electromagnetic steel sheet called a directional electromagnetic steel sheet is used.

また、本実施形態における分割型ステータ1では、ステータコアを従来の一体型コアから分割型コアとすることで巻線占積率の向上を図ることができると共に、ヨーク部2の形成に磁束の流れ方向D1と一致する磁化容易方向D3を有する方向性電磁鋼板を用いているため、鉄損の低減を図ることができる。さらに、本実施形態における分割型ステータ1は、分布巻き方式を採用しているため、数十kWクラス以上の高出力IPMモータ用のステータとして最適である。  Further, in the split stator 1 according to this embodiment, the winding space factor can be improved by changing the stator core from the conventional integral core to the split core, and the flow of magnetic flux in the formation of the yoke portion 2 is improved. Since the grain-oriented electrical steel sheet having the easy magnetization direction D3 that coincides with the direction D1 is used, iron loss can be reduced. Furthermore, the split stator 1 in the present embodiment employs a distributed winding method, and is optimal as a stator for a high-power IPM motor of several tens of kW class or higher.

なお、本発明は上記実施形態に限定されず、以下のような変形例が挙げられる。
(1)上記実施形態では、巻線スロット数「12」、極数「2」の分割型ステータ1を例示して説明したが、これはあくまで一例であり、巻線スロット数(ティース部3の数)及び極数は分割型ステータ1に要求される仕様に応じて適宜変更可能である。また、ヨーク部2を構成するヨーク片2aの数も12個に限定されない。
In addition, this invention is not limited to the said embodiment, The following modifications are mentioned.
(1) In the above embodiment, the split stator 1 having the number of winding slots “12” and the number of poles “2” has been described as an example. However, this is merely an example, and the number of winding slots (the number of teeth 3) The number) and the number of poles can be appropriately changed according to the specifications required for the split stator 1. Further, the number of yoke pieces 2a constituting the yoke portion 2 is not limited to twelve.

(2)図2(a)(b)に示すように、ティース部3からティース先端部3aを分割し、このティース先端部3aをティース部3に対して着脱自在な構成としても良い。この場合、ティース先端部3aを外した状態でティース部3をヨーク部2に接合して、各巻線スロットS1〜S12をオープンスロットとし(図2(b)参照)、ティース部3に対して各U相巻線4Ua、4Ub、V相巻線4Va、4Vb、及びW相巻線4Wa、4Wbの装着作業を行った後、ティース先端部3aを各ティース部3に接合(嵌合)するという組み立て方法を採用することができ、巻線装着作業の容易化を図ることができる。なお、このティース先端部3aの形成には、方向性電磁鋼板と無方向性電磁鋼板のいずれを用いても良い。 (2) As shown in FIGS. 2 (a) and 2 (b), the teeth tip 3 a may be divided from the teeth 3, and the teeth tip 3 a may be detachable from the teeth 3. In this case, the tooth portion 3 is joined to the yoke portion 2 with the teeth tip 3a removed, and the winding slots S1 to S12 are made open slots (see FIG. 2B). Assembly in which the teeth tip 3a is joined (fitted) to the teeth 3 after the U-phase windings 4Ua and 4Ub, the V-phase windings 4Va and 4Vb, and the W-phase windings 4Wa and 4Wb are mounted. The method can be employed, and the winding mounting operation can be facilitated. In addition, you may use any of a directional electrical steel plate and a non-oriented electrical steel plate for formation of this teeth front-end | tip part 3a.

(3)図3に示すように、方向性電磁鋼板を螺旋状に巻いて積層構造とした巻きコア5の中空部に対して、ヨーク部2を圧入することにより、ヨーク部2の円環形状を維持したままヨーク部2を固定するような構成を採用しても良い。つまり、巻きコア5をヨーク部2(ヨーク片2a)の固定用部材として用いても良い。 (3) As shown in FIG. 3, the yoke portion 2 is press-fitted into the hollow portion of the wound core 5 in which a directional electromagnetic steel sheet is spirally wound to form a laminated structure, whereby the annular shape of the yoke portion 2 is obtained. A configuration may be adopted in which the yoke portion 2 is fixed while maintaining the above. That is, the winding core 5 may be used as a fixing member for the yoke portion 2 (yoke piece 2a).

(4)図4に示すように、ヨーク部2(ヨーク片2a)とティース部3との接合部6に数百μm程度の隙間(ギャップ)を形成しておき、このギャップに圧粉磁性材を含む接着剤7を充填することで、ヨーク部2とティース部3とを接着するようにしても良い。この圧粉磁性材とは、固体の磁性材を破砕及び圧粉して得られる粉末状の磁性材であり、粉末間の電気抵抗が大きく、渦電流損(鉄損)が小さいという特徴を有している。つまり、このような圧粉磁性材を含む接着剤7を接合部6に形成されたギャップに充填することで、ヨーク部2とティース部3との層間短絡を回避しつつ(層間短絡による渦電流発生を回避しつつ)、接合部6の磁気抵抗を下げることができ、その結果、モータ出力の低下及び鉄損の増大を回避することの可能な分割型ステータ1を得ることができる。 (4) As shown in FIG. 4, a gap (gap) of about several hundred μm is formed in the joint portion 6 between the yoke portion 2 (yoke piece 2 a) and the tooth portion 3, and a dust magnetic material is formed in this gap. The yoke part 2 and the teeth part 3 may be bonded together by filling the adhesive 7 containing This powder magnetic material is a powdered magnetic material obtained by crushing and compacting a solid magnetic material, and has the characteristics that the electrical resistance between the powders is large and the eddy current loss (iron loss) is small. is doing. That is, by filling the gap 7 formed in the joint 6 with the adhesive 7 containing such a dust magnetic material, while avoiding an interlayer short circuit between the yoke part 2 and the tooth part 3 (eddy current due to the interlayer short circuit) While avoiding the occurrence), it is possible to reduce the magnetic resistance of the joint 6, and as a result, it is possible to obtain the split stator 1 capable of avoiding a decrease in motor output and an increase in iron loss.

(5)図5に示すように、ティース部3の接合部6側に直線先細形状(テーパ形状)を有する嵌合雄部3bを設けると共に、ヨーク片2aの径方向内側に嵌合雄部3bを嵌合可能な嵌合雌部2bを設け、ティース部3の嵌合雄部3bをヨーク片2aの嵌合雌部2bに嵌合することで、両者を接合するような構成を採用しても良い。ティース部3の嵌合雄部3bは、その根元付近で一旦大きく幅が広がった後、ティース部3の磁化容易方向D2に沿って徐々に先細る形状となっているため、溶接等を行うことなく、ヨーク部2とティース部3とを接合することができる。また、このような形状とすることで、磁束の流れ方向D1と、ティース部3の磁化容易方向D2及びヨーク片2aの磁化容易方向D3とが常に一致するため、鉄損の低減を図ることができる。 (5) As shown in FIG. 5, a fitting male part 3b having a linear tapered shape (tapered shape) is provided on the joint part 6 side of the tooth part 3, and the fitting male part 3b is provided radially inward of the yoke piece 2a. The fitting female part 2b that can be fitted is provided, and the fitting male part 3b of the tooth part 3 is fitted to the fitting female part 2b of the yoke piece 2a so as to join the two. Also good. The fitting male part 3b of the tooth part 3 has a shape that gradually widens in the vicinity of the base and then gradually tapers along the easy magnetization direction D2 of the tooth part 3, so that welding or the like is performed. The yoke part 2 and the teeth part 3 can be joined. Further, by adopting such a shape, the magnetic flux flow direction D1, the easy magnetization direction D2 of the tooth portion 3, and the easy magnetization direction D3 of the yoke piece 2a always coincide with each other, so that iron loss can be reduced. it can.

1…分割型ステータ、2…ヨーク部、2a…ヨーク片、2b…嵌合雌部、3…ティース部、3a…ティース先端部、3b…嵌合雄部、4Ua、4Ub…U相巻線、4Va、4Vb…V相巻線、4Wa、4Wb…W相巻線、5…巻きコア、6…接合部、7…接着剤、S1〜S12…巻線スロット   DESCRIPTION OF SYMBOLS 1 ... Split-type stator, 2 ... Yoke part, 2a ... Yoke piece, 2b ... Fitting female part, 3 ... Teeth part, 3a ... Teeth tip part, 3b ... Fitting male part, 4Ua, 4Ub ... U-phase winding, 4Va, 4Vb ... V-phase winding, 4Wa, 4Wb ... W-phase winding, 5 ... winding core, 6 ... junction, 7 ... adhesive, S1-S12 ... winding slot

Claims (1)

複数のヨーク片が円環状に接合されてなるヨーク部と、
前記ヨーク部の径方向内側に接合された複数のティース部と、
前記ティース部に対して分布巻き方式で巻回された巻線とを備え、
前記ヨーク片の各々及び前記ティース部の各々は、磁束の流れ方向と一致する磁化容易方向を有する方向性電磁鋼板を用いて形成されていることを特徴とする分割型ステータ。
A yoke part in which a plurality of yoke pieces are joined in an annular shape;
A plurality of teeth joined to the inside of the yoke in the radial direction;
A winding wound in a distributed winding manner on the teeth part,
Each of the yoke pieces and each of the tooth portions are formed by using a grain-oriented electrical steel sheet having an easy magnetization direction that coincides with a flow direction of magnetic flux.
JP2010117356A 2010-05-21 2010-05-21 Split stator Pending JP2011244672A (en)

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Cited By (5)

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Publication number Priority date Publication date Assignee Title
JP2014011884A (en) * 2012-06-29 2014-01-20 Toshiba Corp Permanent magnet motor
JP2014039464A (en) * 2012-08-10 2014-02-27 Johnson Electric Sa Core component for motor, and method of improving slot filling rate and material utilization rate of core component for motor
JP2015186366A (en) * 2014-03-25 2015-10-22 マツダ株式会社 axial gap type rotary electric machine
JP2015220878A (en) * 2014-05-19 2015-12-07 三菱電機株式会社 Stator of rotary electric machine, stator core, and manufacturing method for stator
US11056260B2 (en) 2016-12-22 2021-07-06 Fanuc Corporation Reactor including iron cores and rectifier, LC filter, and motor drive apparatus including the same

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JPH10271716A (en) * 1997-03-21 1998-10-09 Matsushita Electric Ind Co Ltd Stator core of motor and its manufacture
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JP2004229435A (en) * 2003-01-24 2004-08-12 Toyota Motor Corp Stator structure of rotating electric machine and the rotating electric machine
JP2007202292A (en) * 2006-01-26 2007-08-09 Nippon Steel Corp Exciter

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JPH10271716A (en) * 1997-03-21 1998-10-09 Matsushita Electric Ind Co Ltd Stator core of motor and its manufacture
JP2004208483A (en) * 2002-10-30 2004-07-22 Honda Motor Co Ltd Stator and method of manufacturing stator
JP2004229435A (en) * 2003-01-24 2004-08-12 Toyota Motor Corp Stator structure of rotating electric machine and the rotating electric machine
JP2007202292A (en) * 2006-01-26 2007-08-09 Nippon Steel Corp Exciter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014011884A (en) * 2012-06-29 2014-01-20 Toshiba Corp Permanent magnet motor
JP2014039464A (en) * 2012-08-10 2014-02-27 Johnson Electric Sa Core component for motor, and method of improving slot filling rate and material utilization rate of core component for motor
JP2015186366A (en) * 2014-03-25 2015-10-22 マツダ株式会社 axial gap type rotary electric machine
JP2015220878A (en) * 2014-05-19 2015-12-07 三菱電機株式会社 Stator of rotary electric machine, stator core, and manufacturing method for stator
US11056260B2 (en) 2016-12-22 2021-07-06 Fanuc Corporation Reactor including iron cores and rectifier, LC filter, and motor drive apparatus including the same

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