JP2010284023A - Permanent magnet rotary machine - Google Patents

Permanent magnet rotary machine Download PDF

Info

Publication number
JP2010284023A
JP2010284023A JP2009136153A JP2009136153A JP2010284023A JP 2010284023 A JP2010284023 A JP 2010284023A JP 2009136153 A JP2009136153 A JP 2009136153A JP 2009136153 A JP2009136153 A JP 2009136153A JP 2010284023 A JP2010284023 A JP 2010284023A
Authority
JP
Japan
Prior art keywords
stator
permanent magnet
slot
rotating machine
rotor
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
Application number
JP2009136153A
Other languages
Japanese (ja)
Inventor
Hideki Oguchi
英樹 大口
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Systems Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Systems Co Ltd filed Critical Fuji Electric Systems Co Ltd
Priority to JP2009136153A priority Critical patent/JP2010284023A/en
Publication of JP2010284023A publication Critical patent/JP2010284023A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a permanent magnet rotary machine capable of suppressing a cogging torque low while reducing leakage magnetic flux. <P>SOLUTION: The permanent magnet rotary machine includes: a stator 3 having an excitation coil wound therearound, and a rotor 4 rotating oppositely with a predetermined gap from the stator 3 and having permanent magnets 22. In the rotary machine, the stator 3 has a stator core 11 divided into the predetermined number of pieces, the stator core 11 has magnetic pole teeth 13 protruding in a radial direction on the center of a circumferential direction of a yoke 12, a slot 14 to which a coil 16 is wound is formed by the yoke 12 and the magnetic teeth 13 of the stator core 11, an opening 15 is provided on an inner diameter side of the stator of the slot 14, a cylindrical ring 17 opposing the rotor 4 with a predetermined gap is disposed on the inner diameter side of the stator 3, and a through-hole 18 for limiting an opening area is formed at a position opposing the opening of the cylindrical ring 17. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

本発明は、固定子と所定の空隙を有して対向して回転する回転子とを備えた永久磁石型回転機に関する。   The present invention relates to a permanent magnet type rotating machine that includes a stator and a rotor that rotates oppositely with a predetermined gap.

この種の永久磁石型回転機ではコギングトルクと呼ばれる一種のトルク脈動が発生することが良く知られている。永久磁石型回転機においてコギングトルクが大きい場合、回転機の制御性能を悪化させたり、騒音を発生したりといった問題が生じる。
永久磁石型回転機の固定子には、励磁コイルを巻装するスロットが閉じた閉スロットタイプ（例えば、特許文献１参照）と、スロットの回転子側が開口した開スロットタイプ（例えば、特許文献２参照）とがある。 It is well known that this kind of permanent magnet type rotating machine generates a kind of torque pulsation called cogging torque. When the cogging torque is large in the permanent magnet type rotating machine, problems such as deterioration in control performance of the rotating machine and generation of noise occur.
The stator of the permanent magnet type rotating machine includes a closed slot type in which a slot around which an exciting coil is wound is closed (for example, see Patent Document 1) and an open slot type in which the rotor side of the slot is open (for example, Patent Document 2). See).

コギングトルクは、回転子の回転に伴って磁気エネルギーが変化するために発生する。閉スロットタイプと開スロットタイプとを比較すると、開スロットタイプではスロット開口部の空気の磁気エネルギーの変化が大きく、コギングトルクが大きくなる。
一方、閉スロットタイプでは、図４に示すように、固定子１０１の回転子に対向する内径側に励磁コイル１０２を巻装するスロット１０３を閉塞するように隣接する磁極ティース１０４間の内径側を連結するブリッジ１０５が形成されている。この閉スロットタイプでは、スロット１０３が閉塞されているので、固定子内径の円周方向の空気の磁気エネルギーの変化が少なく、コギングトルクが小さくなる。しかし、ブリッジ１０５の磁気抵抗は空気に比べて非常に小さいため、回転子に配設された永久磁石の作る磁束の大部分は磁極ティース１０４及びヨーク１０６で構成される磁路ＭＬ１を通るが、その一部がブリッジ１０５を通じて流れる磁路ＭＬ２を形成してしまう。この磁路ＭＬ２を通る磁束は、回転機のトルク発生に寄与することはない。すなわち、トルクを有効に発生できない漏れ磁束となり、回転機のトルク発生に寄与する磁路ＭＬ１を通る磁束が減る分回転機で発生するトルクが減少するという課題がある。 Cogging torque is generated because the magnetic energy changes as the rotor rotates. When the closed slot type and the open slot type are compared, the change in the magnetic energy of the air in the slot opening is large and the cogging torque is large in the open slot type.
On the other hand, in the closed slot type, as shown in FIG. 4, the inner diameter side between the adjacent magnetic teeth 104 is closed so as to close the slot 103 around which the exciting coil 102 is wound on the inner diameter side facing the rotor of the stator 101. A connecting bridge 105 is formed. In this closed slot type, since the slot 103 is closed, there is little change in the magnetic energy of the air in the circumferential direction of the stator inner diameter, and the cogging torque is reduced. However, since the magnetic resistance of the bridge 105 is very small compared to air, most of the magnetic flux created by the permanent magnet disposed in the rotor passes through the magnetic path ML1 formed by the magnetic pole teeth 104 and the yoke 106. A part of the magnetic path ML2 flows through the bridge 105. The magnetic flux passing through the magnetic path ML2 does not contribute to the torque generation of the rotating machine. That is, there is a problem that the torque generated in the rotating machine is reduced by the amount of magnetic flux that passes through the magnetic path ML1 that contributes to the torque generation of the rotating machine due to leakage magnetic flux that cannot effectively generate torque.

このため、開スロットタイプ及び閉スロットタイプの利点を合わせて、コギングトルクを減少させるために、従来、磁極歯の先端部を隣の磁極歯の先端部と連結して閉スロットとした固定子鉄心片と、連結せずに開スロットとした固定子鉄心とを混在積層して固定子鉄心を構成した永久磁石型モータが提案されている（例えば、特許文献３参照）。   For this reason, in order to reduce the cogging torque by combining the advantages of the open slot type and the closed slot type, conventionally, the stator core is connected to the tip of the adjacent magnetic pole tooth to form a closed slot. There has been proposed a permanent magnet type motor in which a stator core is configured by mixing and laminating pieces and a stator core that is not connected and has an open slot (see, for example, Patent Document 3).

特許第３１０７１７７号公報Japanese Patent No. 3107177 特開２００４−９６８０３号公報JP 2004-96803 A 特開２００７−１５１２３２号公報JP 2007-151232 A

しかしながら、上記特許文献３に記載された従来例にあっては、開スロット構成の固定子鉄心片と閉スロット構成の固定子鉄心片とを混載積層するようにしているので、閉スロット構成の固定子鉄心片を形成するには、非常に高い寸法精度が要求され、製造コストが嵩むおそれがある。また、閉スロットのコアピースと閉スロットのコアピースとの２つの金型が必要となるため、設備の大型化が懸念されるという未解決の課題がある。   However, in the conventional example described in Patent Document 3, a stator core piece having an open slot configuration and a stator core piece having a closed slot configuration are mixed and stacked, so that the fixed slot configuration is fixed. In order to form the core piece, very high dimensional accuracy is required, which may increase the manufacturing cost. In addition, since two molds of a closed-slot core piece and a closed-slot core piece are required, there is an unsolved problem that there is a concern about an increase in the size of the facility.

そこで、本発明は、上記従来例の未解決の課題に着目してなされたものであり、漏れ磁束を減少させながらコギングトルクを低く抑えることが可能な永久磁石型回転機を提供することを目的としている。   Accordingly, the present invention has been made paying attention to the above-mentioned unsolved problems of the conventional example, and an object thereof is to provide a permanent magnet type rotating machine capable of keeping cogging torque low while reducing leakage magnetic flux. It is said.

上記目的を達成するために、本発明の一の形態に係る永久磁石型回転機は、励磁コイルを巻装した固定子と、該固定子と所定の空隙を隔てて対向して回転する永久磁石を有する回転子とを備えた永久磁石型回転機であって、
前記固定子は、所定数に分割された固定子コアを有し、該固定子コアはヨークの円周方向の中央部に半径方向に突出する磁極ティースを有し、前記固定子コアの前記ヨーク及び前記磁極ティースによってコイルが巻装されるスロットが形成され、該スロットの固定子内径側に開口部を有し、前記固定子の内径側に前記回転子に対して所定の空隙を隔てて対向する円筒リングを配設し、該円筒リングの前記開口部に対向する位置に開口面積を制限する透孔が形成されていることを特徴としている。 To achieve the above object, a permanent magnet type rotating machine according to an embodiment of the present invention includes a stator around which an exciting coil is wound, and a permanent magnet that rotates opposite to the stator with a predetermined gap therebetween. A permanent magnet type rotating machine comprising a rotor having
The stator has a stator core divided into a predetermined number, and the stator core has magnetic teeth protruding in a radial direction at a central portion in a circumferential direction of the yoke, and the yoke of the stator core And a slot in which a coil is wound is formed by the magnetic teeth, and has an opening on the stator inner diameter side of the slot, and faces the rotor on the inner diameter side of the stator with a predetermined gap. A cylindrical ring is provided, and a through hole for limiting an opening area is formed at a position facing the opening of the cylindrical ring.

また、本発明の他の形態に係る永久磁石型回転機は、前記固定子は、前記磁極ティースに１つの励磁コイルを巻装した集中巻構成とされていることを特徴としている。
さらに、本発明の他の形態に係る回転機は、前記回転機及び前記固定子の一方にスキューが施されていることを特徴としている。 Moreover, the permanent magnet type rotating machine according to another aspect of the present invention is characterized in that the stator has a concentrated winding configuration in which one excitation coil is wound around the magnetic pole teeth.
Furthermore, a rotating machine according to another embodiment of the present invention is characterized in that one of the rotating machine and the stator is skewed.

本発明によれば、固定子に開口部を有するスロットを形成し、この固定子の内周面にスロットの開口面積を制限する開口部を有する円筒リングを配設するようにしたので、閉スロットタイプのようにコギングトルクを低減させることができ、開スロットタイプのように漏れ磁束を低減することができる永久磁石型回転機を提供することができるという効果が得られる。   According to the present invention, the slot having the opening is formed in the stator, and the cylindrical ring having the opening for limiting the opening area of the slot is disposed on the inner peripheral surface of the stator. As in the type, it is possible to reduce the cogging torque, and it is possible to provide a permanent magnet type rotating machine capable of reducing the leakage magnetic flux as in the open slot type.

本発明の一実施形態を示す永久磁石式同期回転機を示す断面図である。It is sectional drawing which shows the permanent-magnet-type synchronous rotary machine which shows one Embodiment of this invention. 図１の固定子コア及び円筒リングを展開した状態の拡大斜視図である。FIG. 2 is an enlarged perspective view of a state where the stator core and the cylindrical ring of FIG. 1 are developed. 円筒リングの他の例を示す展開した状態の拡大斜視図である。It is an expansion perspective view of the developed state showing other examples of a cylindrical ring. 従来の閉スロットタイプの固定子を示す展開図である。It is an expanded view which shows the conventional closed slot type stator.

以下、本発明の実施の形態を図面に基づいて説明する。
図１は本発明を永久磁石式同期回転機に適用した場合の第１の実施形態を示す断面図である。この図１において、永久磁石型同期回転機１は表面磁石型同期回転機で構成されている。この永久磁石式同期回転機１は、円筒状フレーム２を有する。この円筒状フレーム２の内周側には円筒状の積層鋼板で形成された固定子３が固定され、この固定子３の内周側には所定の空隙を介して対向する積層鋼板で形成された回転子４が配置されている。この回転子４は回転軸５に支持されて回転自在に配置されている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a sectional view showing a first embodiment when the present invention is applied to a permanent magnet type synchronous rotating machine. In FIG. 1, a permanent magnet type synchronous rotating machine 1 is a surface magnet type synchronous rotating machine. The permanent magnet type synchronous rotating machine 1 has a cylindrical frame 2. A stator 3 formed of a cylindrical laminated steel plate is fixed on the inner peripheral side of the cylindrical frame 2, and formed on the inner peripheral side of the stator 3 by a laminated steel plate facing each other with a predetermined gap. A rotor 4 is arranged. The rotor 4 is supported by a rotating shaft 5 and is rotatably arranged.

固定子３は、円筒状フレーム２の内周側に円周方向に９分割された固定子コア１１を円周方向に連結して配置した構成を有する。各固定子コア１１は、図２に示すように、外周面が円筒面に形成され、内周面が９角筒内面とされたヨーク１２と、このヨーク１２の内周面の円周方向の中央部から半径方向に突出形成された磁極ティース１３とから構成されている。   The stator 3 has a configuration in which a stator core 11 that is divided into nine in the circumferential direction is connected to the inner circumferential side of the cylindrical frame 2 in a circumferential direction. As shown in FIG. 2, each stator core 11 includes a yoke 12 having an outer peripheral surface formed in a cylindrical surface and an inner peripheral surface formed as a nine-sided cylinder inner surface, and a circumferential direction of the inner peripheral surface of the yoke 12. The magnetic pole teeth 13 are formed to protrude in the radial direction from the central portion.

磁極ティース１３は、ヨーク１２に連接する磁脚部１３ａと、この磁脚部１３ａの先端から円周方向に突出する楔状の鍔部１３ｂとで構成されている。
そして、隣接する固定子コア１１のヨーク１２及び磁極ティース１３とでスロット１４が形成され、隣接する磁極ティース１３の鍔部１３ｂ間にスロット開口部１５が形成されている。 The magnetic teeth 13 are composed of a magnetic leg portion 13a connected to the yoke 12 and a wedge-shaped flange portion 13b protruding in the circumferential direction from the tip of the magnetic leg portion 13a.
A slot 14 is formed by the yoke 12 and the magnetic teeth 13 of the adjacent stator core 11, and a slot opening 15 is formed between the flanges 13 b of the adjacent magnetic teeth 13.

各磁極ティース１３にはその磁脚部１３ａに１つの励磁コイル１６が巻装された集中巻構成とされている。
また、固定子３の内周面には磁性体製の円筒リング１７が磁極ティース１３の鍔部１３ｂの先端と接触して固定されている。この円筒リング１７には、図２に示すように、スロット１４の開口部１５に対向する位置に、開口部１５の幅と等しい幅で高さが開口部１５の高さより低い長方形状の透孔１８が軸方向の中央部に形成されている。この透孔１８によって、スロット１４の開口部１５の開口面積が制限されている。 Each magnetic pole tooth 13 has a concentrated winding structure in which one exciting coil 16 is wound around the magnetic leg portion 13a.
A cylindrical ring 17 made of a magnetic material is fixed to the inner peripheral surface of the stator 3 in contact with the tip of the flange portion 13 b of the magnetic pole tooth 13. As shown in FIG. 2, the cylindrical ring 17 has a rectangular through-hole at a position facing the opening 15 of the slot 14 and having a width equal to the width of the opening 15 and a height lower than the height of the opening 15. 18 is formed in the central portion in the axial direction. The through-hole 18 limits the opening area of the opening 15 of the slot 14.

一方、回転子４は、円筒リング１７と所定の空隙部を形成して対向している。この回転子４は、円筒状の回転子コア２１の外周面となる表面に円周方向に隣接する磁極が異極性となるように例えば６極構成の永久磁石２２が配設された構成を有する。ここで、永久磁石２２は希土類磁石で構成されている。
また、回転子４の永久磁石２２及び固定子３の磁極ティースの一方にスキューが施されている。 On the other hand, the rotor 4 is opposed to the cylindrical ring 17 by forming a predetermined gap. The rotor 4 has a configuration in which, for example, a permanent magnet 22 having a 6-pole configuration is disposed on a surface that is an outer peripheral surface of a cylindrical rotor core 21 so that magnetic poles adjacent in the circumferential direction have different polarities. . Here, the permanent magnet 22 is composed of a rare earth magnet.
Further, one of the permanent magnet 22 of the rotor 4 and the magnetic pole teeth of the stator 3 is skewed.

次に、上記実施形態の動作を説明する。
このように、上記実施形態によると、永久磁石型同期回転機１が表面永久磁石型回転機の構成を有するので、回転子４の永久磁石２２の円周方向の中央部がｄ軸と隣接する永久磁石２２間がｑ軸となって、励磁コイル１６に通電してｄ−ｑ軸電流制御することにより、回転子４を回転駆動することができる。 Next, the operation of the above embodiment will be described.
Thus, according to the above embodiment, since the permanent magnet type synchronous rotating machine 1 has the configuration of the surface permanent magnet type rotating machine, the circumferential central portion of the permanent magnet 22 of the rotor 4 is adjacent to the d axis. The rotor 4 can be driven to rotate by setting the q axis between the permanent magnets 22 and energizing the exciting coil 16 to control the dq axis current.

このとき、上述したように、固定子３の分割された固定子コア１１の磁極ティース１３における鍔部１３ｂの内周面に円筒リング１７が接触されて固定され、この円筒リング１７のスロット１４の開口部１５に対向する位置に、開口部１５の開口面積より小さい開口面積の透孔１８が配設されている。このため、透孔１８の軸方向の両端では、磁極ティース１３の鍔部１３ｂ間を磁気的に連結する幅狭のブリッジ部１９が形成されることになる。   At this time, as described above, the cylindrical ring 17 is brought into contact with and fixed to the inner peripheral surface of the flange portion 13b of the magnetic pole teeth 13 of the stator core 11 obtained by dividing the stator 3, and the slot 14 of the cylindrical ring 17 is fixed. A through hole 18 having an opening area smaller than the opening area of the opening 15 is disposed at a position facing the opening 15. For this reason, narrow bridge portions 19 that magnetically connect the flange portions 13b of the magnetic teeth 13 are formed at both ends of the through holes 18 in the axial direction.

したがって、円筒リング１７によってスロット１４の開口部１５の開口面積が制限されると共に、一部にブリッジ部１９が形成されることになる。このため、開口部１５の開口面積が制限されることにより、開口部の空気の磁気エネルギー変化を抑制することができ、この分コギングトルクを小さく抑制することができる。また、ブリッジ部１９が形成されていることにより、このブリッジ部１９の位置では空気の磁気エネルギー変化を生じることはなく、且つブリッジ部１９が幅狭であるので、漏れ磁束の発生を抑制することができる。   Accordingly, the opening area of the opening 15 of the slot 14 is limited by the cylindrical ring 17, and the bridge portion 19 is partially formed. For this reason, when the opening area of the opening 15 is limited, the change in the magnetic energy of the air in the opening can be suppressed, and the cogging torque can be reduced to this extent. Further, since the bridge portion 19 is formed, the magnetic energy of the air is not changed at the position of the bridge portion 19 and the bridge portion 19 is narrow, thereby suppressing the generation of leakage magnetic flux. Can do.

このため、閉スロットタイプのようにコギングトルクを低減でき、且つ開スロットタイプのように漏れ磁束を低減することができ、閉スロットタイプ及び開スロットタイプの利点を兼ね備えた永久磁石型回転機を提供することができる。
しかも、上記円筒リング１７は、分割形の固定子コア１１をフレーム２の内周面に嵌合させて固定することにより、開スロットタイプの固定子３を構成し、その後に固定子３の内周面に円筒リング１７を嵌合させることで、閉スロットと開スロットとの組み合わせ構造を容易に構成することができる。このため、固定子コア１１を加工する金型は一種類で済むと共に、高精度な寸法が要求されることがなく、特許文献３に記載された従来例に比較して製造コストを低減することができる。 For this reason, the cogging torque can be reduced as in the closed slot type, and the leakage magnetic flux can be reduced as in the open slot type, providing a permanent magnet type rotating machine that combines the advantages of the closed slot type and the open slot type. can do.
Moreover, the cylindrical ring 17 constitutes an open slot type stator 3 by fitting and fixing the split stator core 11 to the inner peripheral surface of the frame 2. By fitting the cylindrical ring 17 to the peripheral surface, a combined structure of a closed slot and an open slot can be easily configured. For this reason, only one type of mold for processing the stator core 11 is required, high-precision dimensions are not required, and the manufacturing cost is reduced as compared with the conventional example described in Patent Document 3. Can do.

また、回転子４の永久磁石２２及び固定子３の磁極ティース１３の一方にスキューが施されていることにより、このスキューによってコギングトルクの発生を抑制することができる。
なお、分割された固定子コア１１で構成される固定子３に円筒リング１７を嵌合させる際に、スロット１４の開口部１５と円筒リング１７の透孔１８との位置決めを行う必要があるので、少なくとも１つの透孔１８の軸方向両端部の一方に開口部１５に係合する突出量の小さい突起部を突出形成することにより、両者の位置決めを容易に行うことができる。 Further, since skew is applied to one of the permanent magnet 22 of the rotor 4 and the magnetic pole teeth 13 of the stator 3, the occurrence of cogging torque can be suppressed by this skew.
When the cylindrical ring 17 is fitted to the stator 3 constituted by the divided stator core 11, it is necessary to position the opening 15 of the slot 14 and the through hole 18 of the cylindrical ring 17. By forming a projection with a small projection amount that engages with the opening 15 at one of the axial end portions of at least one through-hole 18, both can be positioned easily.

また、上記実施形態においては、円筒リング１７の軸方向に１つの透孔１８を形成した場合について説明したが、これに限定されるものではなく、図３に示すように、軸方向に長さの短い２つの透孔１８ａ，１８ｂを形成するようにしてもよく、３つ以上の透孔を形成するようにしてもよい。
さらに、円筒リング１７に形成した透孔１８の形状としては長方形状に限らず、長円形状や楕円形状、台形状としたり、長方形状の軸方向の両端部を端部に行くに従い幅狭となる台形状としたり、任意の形状を適用することができる。 Moreover, in the said embodiment, although the case where the one through-hole 18 was formed in the axial direction of the cylindrical ring 17 was demonstrated, it is not limited to this, As shown in FIG. Two short through holes 18a and 18b may be formed, or three or more through holes may be formed.
Further, the shape of the through-hole 18 formed in the cylindrical ring 17 is not limited to a rectangular shape, but may be an oval shape, an elliptical shape, a trapezoidal shape, or the width of the rectangular shape decreases as it goes to both ends in the axial direction. A trapezoidal shape or an arbitrary shape can be applied.

さらに、上記実施形態においては、ヨーク１２の内周面が多角筒内面である場合について説明したが、これに限定されるものはなく、多角筒内面の各面を外径側に湾曲する湾曲面とするようにしてもよい。
また、上記実施形態においては、回転子４を表面磁石型回転子で構成した場合について説明したが、これに限定されるものではなく、永久磁石を回転子コア２１内に埋込んだ埋込磁石型回転子で構成することもできる。 Furthermore, in the above embodiment, the case where the inner peripheral surface of the yoke 12 is the inner surface of the polygonal cylinder has been described. However, the present invention is not limited to this, and the curved surface that curves each surface of the inner surface of the polygonal cylinder to the outer diameter side. You may make it.
Further, in the above embodiment, the case where the rotor 4 is constituted by a surface magnet type rotor has been described. However, the present invention is not limited to this, and an embedded magnet in which a permanent magnet is embedded in the rotor core 21. It can also consist of a mold rotor.

さらに、上記実施形態においては、上記実施形態においては、本発明を固定子３の磁極ティース１３及びスロット１４を９個と、回転子４の永久磁石２２の極数を６とする回転機に適用した場合について説明したが、これに限定されるものではなく、永久磁石２２の極数を２ｎ（ｎは正の整数）としたときに、スロット数を３ｎとする回転機に本発明を適用することができる。   Further, in the above embodiment, in the above embodiment, the present invention is applied to a rotating machine in which the magnetic pole teeth 13 and the slots 14 of the stator 3 are nine, and the number of poles of the permanent magnet 22 of the rotor 4 is six. However, the present invention is not limited to this, and the present invention is applied to a rotating machine having 3n slots when the number of poles of the permanent magnet 22 is 2n (n is a positive integer). be able to.

１…永久磁石式同期回転機、３…固定子、４…回転子、５…回転軸、１１…固定子コア、１２…ヨーク、１３…磁極ティース、１３ａ…磁脚部、１３ｂ…鍔部、１４…スロット、１５…開口部、１６…励磁コイル、１７…円筒リング、１８…透孔、２１…回転子コア、２２…永久磁石   DESCRIPTION OF SYMBOLS 1 ... Permanent magnet type synchronous rotating machine, 3 ... Stator, 4 ... Rotor, 5 ... Rotating shaft, 11 ... Stator core, 12 ... Yoke, 13 ... Magnetic pole teeth, 13a ... Magnetic leg part, 13b ... Gutter part, DESCRIPTION OF SYMBOLS 14 ... Slot, 15 ... Opening part, 16 ... Excitation coil, 17 ... Cylindrical ring, 18 ... Through-hole, 21 ... Rotor core, 22 ... Permanent magnet

Claims (3)

励磁コイルを巻装した固定子と、該固定子と所定の空隙を隔てて対向して回転する永久磁石を有する回転子とを備えた永久磁石型回転機であって、
前記固定子は、所定数に分割された固定子コアを有し、該固定子コアはヨークの円周方向の中央部に半径方向に突出する磁極ティースを有し、前記固定子コアの前記ヨーク及び前記磁極ティースによってコイルが巻装されるスロットが形成され、該スロットの固定子内径側に開口部を有し、前記固定子の内径側に前記回転子に対して所定の空隙を隔てて対向する円筒リングを配設し、該円筒リングの前記開口部に対向する位置に開口面積を制限する透孔が形成されていることを特徴とする永久磁石型回転機。 A permanent magnet type rotating machine comprising a stator around which an exciting coil is wound, and a rotor having a permanent magnet that rotates opposite to the stator across a predetermined gap,
The stator has a stator core divided into a predetermined number, and the stator core has magnetic teeth protruding in a radial direction at a central portion in a circumferential direction of the yoke, and the yoke of the stator core And a slot in which a coil is wound is formed by the magnetic teeth, and has an opening on the stator inner diameter side of the slot, and faces the rotor on the inner diameter side of the stator with a predetermined gap. A permanent magnet type rotating machine, characterized in that a cylindrical ring is disposed, and a through hole for limiting an opening area is formed at a position facing the opening of the cylindrical ring. 前記固定子は、前記磁極ティースに１つの励磁コイルを巻装した集中巻構成とされていることを特徴とする請求項１に記載の永久磁石型回転機。   2. The permanent magnet type rotating machine according to claim 1, wherein the stator has a concentrated winding configuration in which one excitation coil is wound around the magnetic pole teeth. 前記回転機及び前記固定子の一方にスキューが施されていることを特徴とする請求項１又は２に記載の永久磁石型回転機。   The permanent magnet type rotating machine according to claim 1, wherein one of the rotating machine and the stator is skewed.
JP2009136153A 2009-06-05 2009-06-05 Permanent magnet rotary machine Pending JP2010284023A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009136153A JP2010284023A (en) 2009-06-05 2009-06-05 Permanent magnet rotary machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2009136153A JP2010284023A (en) 2009-06-05 2009-06-05 Permanent magnet rotary machine

Publications (1)

Publication Number Publication Date
JP2010284023A true JP2010284023A (en) 2010-12-16

Family

ID=43540253

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2009136153A Pending JP2010284023A (en) 2009-06-05 2009-06-05 Permanent magnet rotary machine

Country Status (1)

Country Link
JP (1) JP2010284023A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014007948A (en) * 2012-05-30 2014-01-16 Nsk Ltd Motor core, motor, transport device, and manufacturing method of motor core

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1198725A (en) * 1997-09-19 1999-04-09 Hitachi Ltd Motor and elevator
JP2000060036A (en) * 1998-08-18 2000-02-25 Denso Corp Stator core of dynamoelectric machine
JP2007151232A (en) * 2005-11-24 2007-06-14 Toshiba Corp Permanent magnet motor and electric power steering apparatus using the same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1198725A (en) * 1997-09-19 1999-04-09 Hitachi Ltd Motor and elevator
JP2000060036A (en) * 1998-08-18 2000-02-25 Denso Corp Stator core of dynamoelectric machine
JP2007151232A (en) * 2005-11-24 2007-06-14 Toshiba Corp Permanent magnet motor and electric power steering apparatus using the same

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014007948A (en) * 2012-05-30 2014-01-16 Nsk Ltd Motor core, motor, transport device, and manufacturing method of motor core

Similar Documents

Publication Publication Date Title
JP6806352B2 (en) Manufacturing method of rotary electric machine and rotor core
JPWO2015156044A1 (en) Permanent magnet embedded rotary electric machine
JP2011223836A (en) Permanent magnet type revolving armature
JP2007074870A (en) Rotor embedded with permanent magnet and motor embedded with permanent magnet
JP2007068357A (en) Rotor of rotary electric machine and rotary electric machine using the same
US20110163618A1 (en) Rotating Electrical Machine
JP2014150626A (en) Rotor for permanent magnet motor, method of manufacturing rotor for permanent magnet motor, and permanent magnet motor
JP2009017669A (en) Permanent magnet type rotating machine
JP2010161896A (en) Rotor of permanent-magnet-type rotary electric machine
JP2008148391A (en) Rotor for rotary electric machine, and the rotary electric machine
JP2010252530A (en) Brushless motor
JP2016073023A (en) Permanent magnet type rotor and permanent magnet type synchronous rotary electric machine
JP2009273304A (en) Rotor of rotating electric machine, and rotating electric machine
JP2015070721A (en) Permanent magnet rotary electric machine
JP2007151233A (en) Permanent magnet motor
JP2015073417A (en) Embedded magnet dynamo-electric machine
JP2014217101A (en) Permanent magnet motor
JP2008306796A (en) Rotary electric machine
JP2006254622A (en) Permanent magnet type motor
JP2008199846A (en) Permanent magnet type electric rotating machine
JP2002136094A (en) Stepping motor
JP5801693B2 (en) motor
JPWO2017212575A1 (en) Permanent magnet motor
JP2010068548A (en) Motor
JP2006340507A (en) Stator of rotary electric machine

Legal Events

Date Code Title Description
A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A712

Effective date: 20110422

A621 Written request for application examination

Effective date: 20120514

Free format text: JAPANESE INTERMEDIATE CODE: A621

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20130918

A131 Notification of reasons for refusal

Effective date: 20131001

Free format text: JAPANESE INTERMEDIATE CODE: A131

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20131125

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20140107