JPH08275419A - Rotor of permanent magnet type rotary machine - Google Patents
Rotor of permanent magnet type rotary machineInfo
- Publication number
- JPH08275419A JPH08275419A JP7073085A JP7308595A JPH08275419A JP H08275419 A JPH08275419 A JP H08275419A JP 7073085 A JP7073085 A JP 7073085A JP 7308595 A JP7308595 A JP 7308595A JP H08275419 A JPH08275419 A JP H08275419A
- Authority
- JP
- Japan
- Prior art keywords
- rotor
- iron core
- magnet
- groove
- main
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は永久磁石式回転機の回転
子に関し、電気特性を低下させることなく遠心力強度向
上を企図したものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a permanent magnet type rotating machine, which is intended to improve centrifugal strength without deteriorating electrical characteristics.
【０００２】[0002]
【従来の技術】図１１は、永久磁石式回転機の全体構成
図である。同図において、１はフレーム、２は固定子鉄
心、３は固定子巻線、４はブラケット、５は回転子鉄
心、６は回転子羽根片、７は回転軸であり、回転子鉄心
５及び回転軸７によって回転子８が構成されている。こ
の永久磁石回転機の回転子８の構造には種々のものが実
用化されているが、代表的なものには、磁石貼付形と磁
石埋込形とがある。2. Description of the Related Art FIG. 11 is an overall configuration diagram of a permanent magnet type rotating machine. In the figure, 1 is a frame, 2 is a stator core, 3 is a stator winding, 4 is a bracket, 5 is a rotor core, 6 is a rotor blade piece, 7 is a rotating shaft, and the rotor core 5 and The rotating shaft 7 constitutes a rotor 8. Various types of structures have been put into practical use for the rotor 8 of this permanent magnet rotating machine, and typical examples thereof include a magnet sticking type and a magnet embedding type.
【０００３】図１２は、磁石貼付形の回転子８の断面図
である。同図に示すように、回転軸７の外周には複数の
永久磁石９が貼付され、これらの永久磁石９の外周には
非磁性の補強リング１０が装着されている。このように
磁石貼付形の回転子８は、補強リング１０を装着するこ
とにより遠心力強度を向上させ、高速回転に対応させて
いる。FIG. 12 is a sectional view of a rotor 8 having a magnet attached thereto. As shown in the figure, a plurality of permanent magnets 9 are attached to the outer periphery of the rotary shaft 7, and a non-magnetic reinforcing ring 10 is attached to the outer periphery of these permanent magnets 9. As described above, the magnet-attached rotor 8 has the reinforcing ring 10 mounted thereon to improve the centrifugal force strength and is adapted to high-speed rotation.
【０００４】図１３は、磁石埋込形の回転子８の断面図
である。同図に示すように、回転子鉄心５には周方向に
等間隔に四分割されたスリット１１と回転軸７の外周に
空間を形成するスリット１２が設けられ、スリット１
１，１２には永久磁石１３が埋め込まれている。回転子
鉄心５の軸方向の適宜箇所（図１１では２箇所）には回
転子鉄心５の断面形状に合った形状のステンレス板１４
（図１４参照）が挿入され、永久磁石１３はステンレス
板１４に形成されたスリット１５に保持されて遠心力強
度が保たれている。このように磁石埋込形の回転子８
は、ステンレス板１４を挿入することにより遠心力強度
を向上させ、高速回転に対応させている。FIG. 13 is a cross-sectional view of the magnet-embedded rotor 8. As shown in the figure, the rotor core 5 is provided with slits 11 which are divided into four at equal intervals in the circumferential direction and slits 12 which form a space on the outer circumference of the rotary shaft 7.
Permanent magnets 13 are embedded in 1 and 12. A stainless plate 14 having a shape matching the cross-sectional shape of the rotor core 5 is provided at appropriate positions (two positions in FIG. 11) in the axial direction of the rotor core 5.
(See FIG. 14) is inserted, and the permanent magnet 13 is held by the slit 15 formed in the stainless plate 14 to maintain the centrifugal force strength. Thus, the magnet-embedded rotor 8
The centrifugal force strength is improved by inserting the stainless steel plate 14 to support high speed rotation.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら上記従来
技術に係る永久磁石式回転機の回転子８は、永久磁石の
遠心力強度を保つために装着した補強リング１０やステ
ンレス板１４の存在によって、等価的エアギャップを増
大させたり、有効鉄心長の減少等を生じさせたりして、
電気特性的には好ましくないものであった。However, the rotor 8 of the permanent magnet type rotating machine according to the above-mentioned prior art is equivalent due to the presence of the reinforcing ring 10 and the stainless steel plate 14 mounted to maintain the centrifugal force strength of the permanent magnet. By increasing the effective air gap or causing a decrease in the effective iron core length,
It was not preferable in terms of electrical characteristics.
【０００６】従って本発明は上記状況に鑑みてなされた
もので、電気特性を低下させることなく遠心力強度を向
上させた永久磁石式回転機の回転子を提供することを目
的とする。Therefore, the present invention has been made in view of the above circumstances, and an object thereof is to provide a rotor of a permanent magnet type rotating machine in which the centrifugal force strength is improved without deteriorating the electrical characteristics.
【０００７】[0007]
【課題を解決するための手段】上記目的を達成する本発
明の第１の構成は、周方向に所定の間隔を有し且つ回転
軸方向に沿って設けられた主磁石用溝と、前記主磁石用
溝間に占位し且つ回転軸方向に沿って設けられた補助磁
石用溝とを有し、表面と前記補助磁石用溝の先端部との
間及び前記主磁石用溝の両端部と前記補助磁石用溝の基
端部との間には接続部が確保されて周方向及び径方向に
一体的に連続した鉄心と、磁極の方向が前記鉄心の径方
向に沿い且つ前記鉄心表面側の磁極が隣同士相異なるよ
うにして前記主磁石用溝に嵌装した永久磁石である主磁
石と、磁極の方向が前記鉄心の周方向に沿い且つ一方の
磁極とこの一方側に占位する主磁石の前記鉄心表面側の
磁極とが同極となるようにして前記補助磁石用溝に嵌装
した永久磁石である補助磁石とを有して構成したことを
特徴とする。According to a first aspect of the present invention which achieves the above object, there is provided a main magnet groove having a predetermined interval in a circumferential direction and provided along a rotation axis direction, and the main magnet. An auxiliary magnet groove provided between the magnet grooves and provided along the rotation axis direction, between the surface and the tip of the auxiliary magnet groove, and both ends of the main magnet groove. An iron core having a connecting portion secured between the base end of the auxiliary magnet groove and being integrally continuous in the circumferential direction and the radial direction, and the direction of the magnetic pole being along the radial direction of the iron core and the iron core surface side. Of the main magnet, which is a permanent magnet fitted into the groove for the main magnet such that the magnetic poles of the magnetic poles are different from each other, and the direction of the magnetic pole is along the circumferential direction of the iron core and one magnetic pole is occupied on this one side. A permanent magnet fitted in the groove for the auxiliary magnet so that the magnetic pole on the surface side of the iron core of the main magnet has the same pole. Characterized by being configured with an auxiliary magnet.
【０００８】また第２の構成は、上記第１の構成におい
て、鉄心の外周部にこの鉄心の周方向に所定の間隔を有
し且つ回転軸方向に沿ってダンパ用溝を設け、これらの
ダンパ溝中に占位する導体部とこれらの導体部の両端を
各々短絡する他の導体部とによって一体的に形成したダ
ンバ巻線を備えたことを特徴とする。A second structure is the above-mentioned first structure, in which a damper groove is provided on the outer peripheral portion of the iron core along the rotation axis direction at a predetermined interval in the circumferential direction of the iron core. The present invention is characterized by comprising a damper winding integrally formed by a conductor portion occupying in the groove and another conductor portion which short-circuits both ends of these conductor portions.
【０００９】また第３の構成は、上記第１又は第２の構
成において、同極となる主磁石及びこれらの主磁石を嵌
装するための主磁石用溝を削除した構成であることを特
徴とする。A third structure is the same as the first or second structure except that the main magnets having the same pole and the main magnet groove for fitting the main magnets are removed. And
【００１０】また第４の構成は、上記第１又は第２の構
成において、主磁石を回転軸方向に２分割して回転軸方
向の一方側からはＳ極となる主磁石及びこれらの主磁石
を嵌装するための主磁石用溝を削除し且つ他方側からは
Ｎ極となる主磁石及びこれらの主磁石を嵌装するための
主磁石用溝を削除した構成であることを特徴とする。A fourth structure is the above-mentioned first or second structure, in which the main magnet is divided into two parts in the direction of the rotation axis to form the S pole from one side in the direction of the rotation axis, and these main magnets. And a main magnet groove for fitting the main magnet and a main magnet groove for fitting these main magnets from the other side are deleted. .
【００１１】また第５の構成は、上記第１、第２、第３
又は第４の構成において、主磁石用溝を鉄心表面側に凸
の円弧状とし、前記主磁石用溝の中央部と前記鉄心表面
との間の鉄心幅と、前記主磁石用溝の両端部と補助磁石
用溝の基端部との間の鉄心幅と、前記補助磁石用溝の先
端部と前記鉄心表面との間の鉄心幅とを略同一の寸法と
したことを特徴とする。The fifth configuration is the above first, second, and third.
Alternatively, in the fourth configuration, the main magnet groove is formed into a convex arc shape toward the iron core surface side, the core width between the central portion of the main magnet groove and the iron core surface, and both end portions of the main magnet groove. And an iron core width between the auxiliary magnet groove and the base end portion of the auxiliary magnet groove, and an iron core width between the tip end portion of the auxiliary magnet groove and the iron core surface are substantially the same size.
【００１２】また第６の構成は、上記第１、第２、第
３、第４又は第５の構成において、極部のエアギャップ
が極間部のエアギャップよりも小さくなるよう鉄心の外
周部に凹凸を設けたことを特徴とする。A sixth structure is the above-mentioned first, second, third, fourth or fifth structure in which the air gap of the pole portion is smaller than the air gap of the inter-pole portion. It is characterized in that unevenness is provided on.
【００１３】[0013]
【作用】上記第１、第２、第３、第４、第５又は第６の
構成の本発明によれば、主磁石によって各極の主磁束が
得られ、しかも補助磁石の漏れ磁束が接続部を通ること
によってこの接続部を磁気的に飽和させることにより、
主磁石の磁束が接続部を通って流れるのを防止して主磁
束が低下するのを防止する。また鉄心が周方向及び径方
向に連続した一体のものであるため、遠心力強度が高
く、他の補強部材を要しない。従って鉄心表面が回転子
の表面になり、また有効鉄心長が減少されない。According to the present invention having the above-mentioned first, second, third, fourth, fifth or sixth structure, the main magnetic flux of each pole is obtained by the main magnet, and the leakage magnetic flux of the auxiliary magnet is connected. By magnetically saturating this connection by passing through
Prevents the magnetic flux of the main magnet from flowing through the connection to prevent the main magnetic flux from dropping. Further, since the iron core is integrally formed continuously in the circumferential direction and the radial direction, the strength of centrifugal force is high and no other reinforcing member is required. Therefore, the core surface becomes the rotor surface, and the effective core length is not reduced.
【００１４】また上記第２の構成の本発明によれば、ダ
ンパ巻線による制動作用を有する。According to the second aspect of the present invention, the damper winding has a braking action.
【００１５】また上記第４の構成の本発明によれば、ハ
イブリッド励磁形回転子として作用する。Further, according to the present invention having the above-mentioned fourth structure, it functions as a hybrid excitation rotor.
【００１６】また上記第５の構成の本発明によれば、主
磁石用溝の中央部と鉄心表面との間の鉄心幅と、主磁石
用溝の両端部と補助磁石用溝の基端部との間の鉄心幅
と、補助磁石用溝の先端部と鉄心表面との間の鉄心幅と
が略同一であるため、ｄ軸磁束とｑ軸磁束の通路の最小
断面が略同一となり、ｄ軸リアクタンスとｑ軸リアクタ
ンスとが略同一となる。According to the fifth aspect of the present invention, the core width between the center of the main magnet groove and the surface of the core, the both ends of the main magnet groove, and the base end of the auxiliary magnet groove. And the core width between the tip of the auxiliary magnet groove and the core surface are substantially the same, so that the minimum cross sections of the d-axis magnetic flux path and the q-axis magnetic flux path are substantially the same, and The axial reactance and the q-axis reactance are substantially the same.
【００１７】また上記第６の構成の本発明によれば、ギ
ャップ磁束分布が方形波状から正弦波状となる。According to the sixth aspect of the present invention, the gap magnetic flux distribution changes from a square wave shape to a sine wave shape.
【００１８】[0018]
【実施例】以下、本発明の実施例を図面に基づき詳細に
説明する。Embodiments of the present invention will now be described in detail with reference to the drawings.
【００１９】図１は本発明の第１実施例に係る永久磁石
式回転機の回転子を示す断面図、図２は図１に示す回転
子の一極当りの磁束の状態を示す説明図である。FIG. 1 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a first embodiment of the present invention, and FIG. 2 is an explanatory view showing a state of magnetic flux per pole of the rotor shown in FIG. is there.
【００２０】図１に示すように、本第１実施例に係る回
転子２７は、鉄心２１に設けられた主磁石用溝２３及び
補助磁石用溝２２に永久磁石である主磁石２６及び補助
磁石２５を各々嵌装して構成されている。As shown in FIG. 1, a rotor 27 according to the first embodiment has a main magnet groove 23 and an auxiliary magnet groove 22 provided in an iron core 21, and a main magnet 26 and an auxiliary magnet which are permanent magnets. 25 are fitted in each.
【００２１】即ち、主磁石用溝２３は、断面が鉄心２１
の周方向（以下単に周方向という）に長く且つ緩やかに
湾曲すると共に、回転軸２４の軸方向（以下単に軸方向
という）に沿って形成された瓦形状の溝であって、周方
向に等間隔で８箇所設けられている。そして、これらの
主磁石用溝２３に、これらと同形で磁極の方向が鉄心２
１の径方向（以下単に径方向という）に沿い且つ鉄心表
面側の磁極が相異なる主磁石２６が周方向に交互に占位
するよう各々嵌装されている。That is, the main magnet groove 23 has a cross section of the iron core 21.
Is a tile-shaped groove formed along the axial direction of the rotary shaft 24 (hereinafter simply referred to as the axial direction) while being long and gently curved in the circumferential direction (hereinafter simply referred to as the circumferential direction). Eight locations are provided at intervals. Then, in the main magnet grooves 23, the magnetic poles of the same shape as those of the core 2
Main magnets 26 that are arranged along the radial direction 1 (hereinafter simply referred to as the radial direction) and have different magnetic poles on the iron core surface side are alternately fitted in the circumferential direction.
【００２２】また補助磁石用溝２２は、断面が径方向に
長い長方形であると共に、軸方向に沿って形成された直
方体状の溝であって、各主磁石用溝２３間に各々設けら
れている。そして、これらの補助磁石用溝２２に、これ
らと同形で磁極の方向が周方向に沿う補助磁石２５がそ
の一方の磁極とこの一方側に占位する主磁石２６の鉄心
表面側の磁極とが同極となるようにして各々嵌装されて
いる。しかも補助磁石用溝２２の先端部と鉄心２１の表
面との間には接続部Ａが確保され、補助磁石用溝２２の
基端部と主磁石用溝２３の両端部との間には接続部Ｂが
確保されている。The auxiliary magnet groove 22 is a rectangular parallelepiped groove formed in the axial direction and has a rectangular cross section, and is provided between the main magnet grooves 23. There is. Then, in these auxiliary magnet grooves 22, an auxiliary magnet 25 having the same shape as that of the magnetic pole whose circumferential direction is in the circumferential direction is provided with one magnetic pole and the magnetic pole on the iron core surface side of the main magnet 26 occupying this one side. They are fitted so that they have the same polarity. Moreover, the connection portion A is secured between the tip of the auxiliary magnet groove 22 and the surface of the iron core 21, and the connection portion A is connected between the base end of the auxiliary magnet groove 22 and both ends of the main magnet groove 23. Part B is secured.
【００２３】従って上記構成の回転子２７は、図２に示
すように（Ｎ極の場合を示す。Ｓ極の場合には磁束の方
向が逆になる。）、各主磁石２６の磁束を主磁束φ0 と
する８極の回転子であって、しかも磁気特性に優れてい
る。即ち、補助磁石２５の漏れ磁束φ1 ，φ2 が接続部
Ａ，Ｂを通ることによってこれらの接続部Ａ，Ｂを磁気
的に飽和することにより、主磁石２６の磁束がこれらの
接続部Ａ，Ｂを通って流れるのを防止するため、主磁石
２６の磁束が有効にエアギャプを通り、主磁束φ0 の低
下を防止してギャップ磁束密度を高めることができる。
つまり、単に隣極との接続部を確保しただけでは、この
接続部を通って主磁石２６の磁束が流れることにより主
磁束φ0 が低下してしまうため、かかる主磁束φ0 の低
下を防止すべく補助磁石２５が各主磁石２６間に設けら
れている。Therefore, as shown in FIG. 2, the rotor 27 having the above-described structure (in the case of the N pole, the direction of the magnetic flux is opposite in the case of the S pole) causes the magnetic flux of each main magnet 26 to be the main. It is an eight-pole rotor with a magnetic flux φ 0 and has excellent magnetic characteristics. That is, the leakage magnetic fluxes φ 1 and φ 2 of the auxiliary magnet 25 pass through the connecting portions A and B to magnetically saturate these connecting portions A and B, so that the magnetic flux of the main magnet 26 changes. , B to prevent the magnetic flux of the main magnet 26 from effectively passing through the air gap, preventing the main magnetic flux φ 0 from decreasing and increasing the gap magnetic flux density.
That is, merely by securing the connection of the Tonarikyoku, since lowered the main magnetic flux phi 0 by flowing magnetic flux of the main magnet 26 through the connection portion, preventing the deterioration of such main magnetic flux phi 0 To this end, the auxiliary magnet 25 is provided between the main magnets 26.
【００２４】また接続部Ａ，Ｂを確保することによって
鉄心２１を周方向及び径方向に連続する一体のものとし
たため、遠心力に対する強度が高い。従って回転子２７
は、従来のような補強リング１０（図１２）やステンレ
ス板１４（図１１，図１４）のような補強部材を要する
ことなく高速回転が可能である。そして、補強リング１
０やステンレス板１４が不要であることから、鉄心２１
の表面がそのまま回転子２７の表面になるため、エアギ
ャップを小さくして磁束密度を高めることができ、また
有効鉄心長が減少することもない。Further, since the iron core 21 is integrally formed in the circumferential direction and the radial direction by securing the connecting portions A and B, the strength against the centrifugal force is high. Therefore, the rotor 27
Can rotate at a high speed without requiring a reinforcing member such as the conventional reinforcing ring 10 (FIG. 12) or the stainless plate 14 (FIGS. 11 and 14). And the reinforcement ring 1
0 or stainless steel plate 14 is unnecessary, so the iron core 21
Since the surface of the rotor is the surface of the rotor 27 as it is, the air gap can be reduced to increase the magnetic flux density, and the effective iron core length is not reduced.
【００２５】また主磁石２６及び補助磁石２５が鉄心２
１の内部に嵌装されているため、これらの磁石２６，２
５が破損しても特に問題はない。The main magnet 26 and the auxiliary magnet 25 have the iron core 2
These magnets 26, 2 because they are fitted inside 1
There is no particular problem if 5 is damaged.
【００２６】図３は、本発明の第２実施例に係る永久磁
石式回転機の回転子を示す断面図である。同図に示すよ
うに、本第２実施例に係る回転子２７′は、図１に示す
鉄心２１に代えて鉄心２１′を備えたものであり、この
鉄心２１′は鉄心２１の外周部に多数のダンパ溝２８を
等間隔に設けた形状のものである。そしてアルミダイキ
ャストや、銅バーとエンドリング等により、ダンパ溝２
８中に占位する導体部（銅バー等）とこれらの導体部の
両端を各々短絡する他の導体部（エンドリング等）によ
ってダンパ巻線を構成する。従って上記構成の回転子２
７′は、上記の回転子２７と同様の作用効果を有すると
共に、ダンパ巻線による制動作用をも有する。FIG. 3 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a second embodiment of the present invention. As shown in the figure, a rotor 27 'according to the second embodiment is provided with an iron core 21' in place of the iron core 21 shown in FIG. 1, and the iron core 21 'is provided on the outer peripheral portion of the iron core 21. It has a shape in which a large number of damper grooves 28 are provided at equal intervals. Damper groove 2 is made by aluminum die casting, copper bar and end ring, etc.
A damper winding is constituted by conductor portions (copper bars or the like) occupying in 8 and other conductor portions (end rings or the like) that short-circuit both ends of these conductor portions. Therefore, the rotor 2 having the above configuration
7'has the same action and effect as the rotor 27, and also has a damping action by the damper winding.
【００２７】図４は、本発明の第３実施例に係る永久磁
石式回転機の回転子を示す断面図である。同図に示すよ
うに、本第３実施例に係る回転子２７′′は図１に示す
鉄心２１に代えてこの鉄心２１から同極（図４ではＳ
極）の主磁石用溝２３を削除した形状の鉄心２１′′を
備えると共に同極の主磁石２６を削除した構成ものであ
る。この回転子２７′′は、図４中に矢印で示すような
磁束分布となり、上記の回転子２７と比較して磁束の量
は減少するが、上記の回転子２７と同様の作用効果を有
する永久磁石式の回転子である。FIG. 4 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a third embodiment of the present invention. As shown in the figure, the rotor 27 '' according to the third embodiment is replaced with the iron core 21 shown in FIG.
The core is provided with an iron core 21 ″ having a shape in which the main magnet groove 23 of the pole) is removed, and the main magnet 26 of the same pole is removed. This rotor 27 ″ has a magnetic flux distribution as shown by an arrow in FIG. 4, and the amount of magnetic flux is smaller than that of the rotor 27, but has the same action and effect as the rotor 27. It is a permanent magnet type rotor.
【００２８】図５は、本発明の第４実施例に係る永久磁
石式回転機の回転子を示す斜視図である。同図に示すよ
うに、本第４実施例に係る回転子２７′′′′は図１に
示す回転子２７において、主磁石２６を軸方向に２分割
して軸方向の一方側からはＳ極となる主磁石２６及びこ
れらの主磁石２６を嵌装するための主磁石用溝２３を削
除し（即ち鉄心表面側がＮ極の主磁石２６′′′′を鉄
心２１′′′′の一方側の主磁石用溝２３′′′′に嵌
装し）且つ他方側からはＮ極となる主磁石２６及びこれ
らの主磁石２６を嵌装するための主磁石用溝２３を削除
した（即ち鉄心表面側がＳ極の主磁石２６′′′′を鉄
心２１′′′′の他方側の主磁石用溝２３′′′′に嵌
装した）構成のものである。従って回転子２７′′′′
は主磁石２６′′′′によって、軸方向の一方側にＮ極
のみを有し且つ他方側にＳ極のみを有する。このため上
記構成の回転子２７′′′′は、上記の回転子２７と同
様の作用効果を有すると共に、図５に示すように固定子
（図示せず）に設けた励磁巻線２８に直流電流Ｉを流す
ことによって前記一方側のＮ極間にＳ極を発生させ且つ
前記他方側のＳ極間にＮ極を発生させることにより、ハ
イブリッド励磁形用の回転子として機能する。FIG. 5 is a perspective view showing a rotor of a permanent magnet type rotating machine according to a fourth embodiment of the present invention. As shown in the figure, the rotor 27 '''' according to the fourth embodiment is the same as the rotor 27 shown in FIG. The main magnets 26 serving as poles and the main magnet grooves 23 for fitting the main magnets 26 are removed (that is, the main magnet 26 ″ ′ ″ having the N pole on the surface side of the iron core is replaced by one of the iron cores 21 ″ ′ ″). Side main magnet groove 23 ″ ″ ″), and from the other side, the main magnet 26 serving as an N pole and the main magnet groove 23 for fitting these main magnets 26 are deleted (ie, The main magnet 26 ″ ″ ″ having an S pole on the iron core surface side is fitted in the main magnet groove 23 ″ ″ on the other side of the iron core 21 ″ ″ ″. Therefore, the rotor 27 ′ ″ ″
Has only the north pole on one side and only the south pole on the other side in the axial direction due to the main magnet 26 ''''. Therefore, the rotor 27 '''''having the above-described structure has the same operation and effect as the rotor 27 described above, and the direct current is applied to the exciting winding 28 provided on the stator (not shown) as shown in FIG. By supplying a current I to generate an S pole between the N poles on the one side and an N pole between the S poles on the other side, the rotor functions as a hybrid excitation type rotor.
【００２９】なお上記の各実施例では、主磁石２６，２
６′′′′及び主磁石用溝２３，２３′′′′が瓦形状
のものであるが、必ずしもこれに限定するものではなく
他の形状のものであってもよい。例えば図６（ａ），
（ｂ）に示すような断面が長方形のもの（２６′，２
３′）や台形のもの（２６′′，２３′′）であっても
よい。また図７に示すように、鉄心２１′′′に端部を
丸くした（Ｒをつけた）主磁石用溝２３′′′及び補助
磁石用溝２２′′′を設け、これらに端部を丸くした主
磁石２６′′′及び補助磁石２５′′′を各々嵌装して
もよい。このように端部にＲを付けることにより、図７
中のａ部やｂ部への応力集中が緩和される。In each of the above embodiments, the main magnets 26, 2
The 6 ″ ″ ″ and the main magnet grooves 23, 23 ″ ″ ″ have a roof tile shape, but the shape is not necessarily limited to this and may have other shapes. For example, in FIG.
A rectangular cross section (26 ', 2
3 ') or a trapezoidal one (26 ", 23") may be used. Further, as shown in FIG. 7, the iron core 21 ″ ″ is provided with a groove 23 ″ ″ for the main magnet and a groove 23 ″ ″ for the auxiliary magnet with rounded ends (having R), and these ends are provided with the ends. A rounded main magnet 26 ″ and an auxiliary magnet 25 ″ may be fitted. As shown in FIG.
The stress concentration on the inside a portion and b portion is relaxed.
【００３０】図８は本発明の第５実施例に係る永久磁石
式回転機の回転子を示す断面図、図９は図８に示す回転
子の一極を抽出して示す説明図であって（ａ）はｄ軸磁
束の状態を示し（ｂ）はｑ軸磁束の状態を示す。本第５
実施例に係る回転子３７は、鉄心３１に設けられた主磁
石用溝３３及び補助磁石用溝３２に永久磁石である主磁
石３６及び補助磁石３５を各々嵌装して構成されてい
る。FIG. 8 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a fifth embodiment of the present invention, and FIG. 9 is an explanatory view showing one pole of the rotor shown in FIG. (A) shows the state of d-axis magnetic flux, (b) shows the state of q-axis magnetic flux. Book 5
The rotor 37 according to the embodiment is configured by fitting the main magnet groove 33 and the auxiliary magnet groove 32, which are provided in the iron core 31, with the main magnet 36 and the auxiliary magnet 35, which are permanent magnets, respectively.
【００３１】即ち、主磁石用溝３３は、断面が図１に示
す主磁石用溝２３よりも更に大きく湾曲した円弧状の溝
であって、主磁石用溝２３と同様に鉄心３１の周方向
（以下単に周方向という）に等間隔で８箇所設けられて
おり、そしてこれらの主磁石用溝３３に、これらと同形
で磁極の方向が鉄心３１の径方向に沿い且つ鉄心表面側
の磁極が相異なる主磁石３６が周方向に交互に占位する
よう各々嵌装されている。また補助磁石用溝３２は、断
面が図１に示す補助磁石用溝２２よりも少し短い溝であ
って、補助磁石用溝２２と同様に各主磁石用溝３３間に
各々設けられており、そしてこれらの補助磁石用溝３２
に、これらと同形で磁極の方向が周方向に沿う補助磁石
３５がその一方の磁極とこの一方側に占位する主磁石３
６の鉄心表面側の磁極とが同極となるようにして各々嵌
装されている。かくして主磁石用溝３３の中央部と鉄心
３１の表面との間の鉄心幅ｄ1 と、主磁石用溝３３の両
端部と補助磁石用溝３２の基端部との間の鉄心幅ｄ
2 と、補助磁石用溝３２の先端部と鉄心３１の表面との
間の鉄心幅ｄ3 とを略同一で且つ容易に磁気飽和する寸
法をとしている。That is, the main magnet groove 33 is an arcuate groove whose cross section is curved more largely than the main magnet groove 23 shown in FIG. The magnetic poles are provided in eight locations at equal intervals (hereinafter simply referred to as “circumferential direction”), and in the main magnet grooves 33, magnetic poles having the same shape as those of the magnetic poles are arranged along the radial direction of the iron core 31 and on the iron core surface side. Different main magnets 36 are fitted so as to alternately occupy the circumferential direction. The auxiliary magnet groove 32 is a groove whose cross section is slightly shorter than that of the auxiliary magnet groove 22 shown in FIG. 1, and is provided between the main magnet grooves 33 similarly to the auxiliary magnet groove 22. And these auxiliary magnet grooves 32
In addition, an auxiliary magnet 35 having the same shape as that of the magnetic pole whose circumferential direction is in the circumferential direction is provided with one magnetic pole and the main magnet 3 occupying this one side.
The magnetic poles 6 on the surface side of the iron core are fitted so as to be the same poles. Thus, the iron core width d 1 between the central portion of the main magnet groove 33 and the surface of the iron core 31 and the iron core width d between both ends of the main magnet groove 33 and the base end portion of the auxiliary magnet groove 32.
2 and the iron core width d 3 between the tip of the auxiliary magnet groove 32 and the surface of the iron core 31 are substantially the same and are dimensioned so that magnetic saturation is easily achieved.
【００３２】従って上記構成の回転子３７は、上記の回
転子２７と同様の作用効果を有すると共に、鉄心幅
ｄ1 ，ｄ2 ，ｄ3 を略同一で且つ容易に磁気飽和する寸
法としたことにより、次のような作用効果を有する。Therefore, the rotor 37 having the above-described structure has the same effect as that of the above-mentioned rotor 27, and the iron core widths d 1 , d 2 , d 3 are substantially the same and are dimensioned so as to be easily magnetically saturated. As a result, the following operational effects are obtained.
【００３３】即ち、機械的には、各極部の鉄心量が減少
し、回転子３７を高速で回転させた際に鉄心３１の応力
集中部に作用する応力が軽減され、また主磁石３６にか
かる応力が軽減される。電気的には、図９（ａ），
（ｂ）に示すように、電機子電流によるｄ軸磁束φd と
ｑ軸磁束φq の通路の最小断面の寸法が略同一となり、
またこれらの通路が容易に磁気飽和するため、ｄ軸リア
クタンスとｑ軸リアクタンスとが略同一となり、また小
さな値となる。このため制御性が向上する。That is, mechanically, the amount of iron core of each pole portion is reduced, the stress acting on the stress concentrated portion of the iron core 31 is reduced when the rotor 37 is rotated at a high speed, and the main magnet 36 is reduced. Such stress is reduced. Electrically, as shown in FIG.
As shown in (b), the dimensions of the minimum cross section of the d-axis magnetic flux φ d and the q-axis magnetic flux φ q due to the armature current are approximately the same,
Further, since these passages are easily magnetically saturated, the d-axis reactance and the q-axis reactance are substantially the same and have a small value. Therefore, controllability is improved.
【００３４】図１０は、本発明の第６実施例に係る永久
磁石式回転機の回転子を示す要部断面図である。同図に
示すように、本第６実施例に係る回転子３７′は、図８
に示す鉄心３１に代えて鉄心３１′を備えたものであ
り、この鉄心３１′は極部のエアギャップ（回転子３
７′と固定子３８とのギャップ）δ0 が極間部のエアギ
ャップδ1 よりも小さくなるよう鉄心３１の外周部に凹
凸を設けた形状のものである。FIG. 10 is a cross-sectional view of essential parts showing a rotor of a permanent magnet type rotating machine according to a sixth embodiment of the present invention. As shown in the figure, the rotor 37 'according to the sixth embodiment is similar to that shown in FIG.
An iron core 31 'is provided in place of the iron core 31 shown in Fig. 1, and this iron core 31' has an air gap (rotor 3
The outer peripheral portion of the iron core 31 is provided with irregularities so that the gap δ 0 between the 7'and the stator 38 is smaller than the air gap δ 1 in the gap portion.
【００３５】従って上記構成の回転子３７′は、上記の
回転子３７と同様の作用効果を有すると共に、極部のエ
アギャップδ0 を極間部のエアギャップδ1 よりも小さ
くしたことにより、ギャップ磁束分布が方形波状から正
弦波状となる。従って更に磁気特性が向上する。Therefore, the rotor 37 'having the above structure has the same effects as the rotor 37 described above, and the air gap δ 0 at the pole portion is made smaller than the air gap δ 1 at the inter-pole portion. The gap magnetic flux distribution changes from a square wave shape to a sine wave shape. Therefore, the magnetic characteristics are further improved.
【００３６】なお、上記の各実施例における回転軸２
４，３４の材質は通常の構造用炭素鋼でよい。また上記
の各実施例では８極の場合について示したが、勿論これ
に限定するものではなく、何極であってもよい。The rotary shaft 2 in each of the above embodiments
The material of 4,34 may be ordinary structural carbon steel. Further, in each of the above-described embodiments, the case of 8 poles is shown, but it is not limited to this, and any number of poles may be used.
【００３７】[0037]
【発明の効果】以上実施例と共に具体的に説明したよう
に本発明によれば、主磁石によって各極の主磁束が得ら
れ、しかも補助磁石の漏れ磁束によって鉄心の接続部を
磁気飽和させることにより主磁石の磁束が接続部を通っ
て流れるのを防止することができるめ、主磁束の低下を
防止してギャップ磁束密度を高めることができる。また
鉄心が接続部によって接続された一体のものであって高
い遠心力強度を有するため、従来のような補強リングや
ステンレス板といった補強部材を要することなく、高速
回転が可能である。そして前記補強部材が不要であるこ
とから、エアギャップを小さくして磁束密度を高めるこ
とができると共に、有効鉄心長を減少させることがな
い。更には主磁石及び補助磁石が鉄心内部に嵌装されて
いるため、これらの磁石が破損しても特に問題はない。
またダンパ巻線を設けたことによって制動作用を有し、
一方側をＮ極のみとし他方側をＳ極のみとすることによ
ってハイブリッド励磁形の回転子とすることができる。According to the present invention as described in detail with reference to the embodiments, the main magnetic flux of each pole can be obtained by the main magnet, and the magnetic flux of the auxiliary magnet can magnetically saturate the connecting portion of the iron core. As a result, it is possible to prevent the magnetic flux of the main magnet from flowing through the connecting portion, and it is possible to prevent the main magnetic flux from decreasing and increase the gap magnetic flux density. Further, since the iron cores are connected to each other by the connecting portion and have a high centrifugal force strength, high-speed rotation is possible without requiring a reinforcing member such as a conventional reinforcing ring or stainless plate. Since the reinforcing member is unnecessary, the air gap can be reduced to increase the magnetic flux density and the effective iron core length is not reduced. Furthermore, since the main magnet and the auxiliary magnet are fitted inside the iron core, there is no particular problem even if these magnets are damaged.
Also, by providing a damper winding, it has a braking effect,
A hybrid excitation type rotor can be obtained by setting only one pole to the N pole and the other side to the S pole.
【００３８】また主磁石を円弧状とし、主磁石用溝の中
央部と鉄心表面との間の鉄心幅と、主磁石用溝の両端部
と補助磁石用溝の基端部との間の鉄心幅と、補助磁石用
溝の先端部と鉄心表面との間の鉄心幅とを略同一の寸法
としたことにより、応力が軽減されると共に、ｄ軸リア
クタンスとｑ軸リアクタンスとが略同一となって制御性
が向上する。Further, the main magnet is arcuate, and the width of the core between the center of the main magnet groove and the surface of the core, and the core between both ends of the main magnet groove and the base end of the auxiliary magnet groove. By making the width and the width of the iron core between the tip of the groove for the auxiliary magnet and the surface of the iron core substantially the same, the stress is reduced and the d-axis reactance and the q-axis reactance become substantially the same. Controllability is improved.
【００３９】また極部のエアギャップを極間部のエアギ
ャップよりも小さくしたことにより、ギャップ磁束分布
が方形波状から正弦波状になり、更に磁気特性が向上す
る。Further, by making the air gap of the pole portion smaller than the air gap of the interelectrode portion, the gap magnetic flux distribution changes from a square wave shape to a sine wave shape, and the magnetic characteristics are further improved.
【図１】本発明の第１実施例に係る永久磁石式回転機の
回転子を示す断面図である。FIG. 1 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a first embodiment of the present invention.
【図２】図１に示す回転子の一極当りの磁束の状態を示
す説明図である。FIG. 2 is an explanatory diagram showing a state of magnetic flux per one pole of the rotor shown in FIG.
【図３】本発明の第２実施例に係る永久磁石式回転機の
回転子を示す断面図である。FIG. 3 is a cross-sectional view showing a rotor of a permanent magnet type rotating machine according to a second embodiment of the present invention.
【図４】本発明の第３実施例に係る永久磁石式回転機の
回転子を示す断面図である。FIG. 4 is a cross-sectional view showing a rotor of a permanent magnet type rotating machine according to a third embodiment of the present invention.
【図５】本発明の第４実施例に係る永久磁石式回転機の
回転子を示す斜視図である。FIG. 5 is a perspective view showing a rotor of a permanent magnet type rotating machine according to a fourth embodiment of the present invention.
【図６】主磁石の他の形状例を示す断面図である。FIG. 6 is a cross-sectional view showing another example of the shape of the main magnet.
【図７】主磁石及び補助磁石の他の形状例を示す断面図
である。FIG. 7 is a cross-sectional view showing another example of the shapes of the main magnet and the auxiliary magnet.
【図８】本発明の第５実施例に係る永久磁石式回転機の
回転子を示す断面図である。FIG. 8 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a fifth embodiment of the present invention.
【図９】図８に示す回転子の一極を抽出して示す説明図
であって（ａ）はｄ軸磁束の状態を示し（ｂ）はｑ軸磁
束の状態を示す。9 is an explanatory view showing one pole of the rotor shown in FIG. 8, in which (a) shows a state of d-axis magnetic flux and (b) shows a state of q-axis magnetic flux.
【図１０】本発明の第６実施例に係る永久磁石式回転機
の回転子を示す断面図である。FIG. 10 is a sectional view showing a rotor of a permanent magnet type rotating machine according to a sixth embodiment of the present invention.
【図１１】永久磁石式回転機の全体構成図である。FIG. 11 is an overall configuration diagram of a permanent magnet type rotating machine.
【図１２】磁石貼付形の回転子を示す断面図である。FIG. 12 is a cross-sectional view showing a magnet-attached rotor.
【図１３】磁石埋込形の回転子を示す断面図である。FIG. 13 is a cross-sectional view showing a magnet embedded rotor.
【図１４】ステンレス板の正面図である。FIG. 14 is a front view of a stainless plate.
２１，２１′，２１′′，２１′′′，２１′′′′，
３１，３１′ 鉄心 ２２，２２′′′，３２ 補助磁石用溝 ２３，２３′，２３′′，２３′′′，２３′′′′，
３３ 主磁石用溝 ２４，３４ 回転軸 ２５，２５′′′，３５ 補助磁石 ２６，２６′，２６′′，２６′′′，２６′′′′，
３６ 主磁石 ２７，２７′，２７′′，２７′′′，３７，３７′
回転子 ２８ 励磁巻線 Ａ，Ｂ 接続部 ｄ1 ，ｄ2 ，ｄ3 鉄心幅 Ｉ 直流電流 δ0 ，δ1 エアギャップ φ0 主磁束 φ1 ，φ2 漏れ磁束21,21 ', 21'',21''', 21 ''''',
31, 31 'Iron core 22, 22''', 32 Auxiliary magnet groove 23, 23 ', 23'',23''', 23 ''''',
33 main magnet groove 24, 34 rotary shaft 25, 25 "', 35 auxiliary magnet 26, 26', 26", 26 "', 26"'",
36 main magnets 27, 27 ', 27 ", 27"', 37, 37 '
Rotor 28 Excitation winding A, B Connection part d 1 , d 2 , d 3 Iron core width I DC current δ 0 , δ 1 Air gap φ 0 Main magnetic flux φ 1 , φ 2 Leakage magnetic flux
Claims (6)
向に沿って設けられた主磁石用溝と、前記主磁石用溝間
に占位し且つ回転軸方向に沿って設けられた補助磁石用
溝とを有し、表面と前記補助磁石用溝の先端部との間及
び前記主磁石用溝の両端部と前記補助磁石用溝の基端部
との間には接続部が確保されて周方向及び径方向に一体
的に連続した鉄心と、 磁極の方向が前記鉄心の径方向に沿い且つ前記鉄心表面
側の磁極が隣同士相異なるようにして前記主磁石用溝に
嵌装した永久磁石である主磁石と、 磁極の方向が前記鉄心の周方向に沿い且つ一方の磁極と
この一方側に占位する主磁石の前記鉄心表面側の磁極と
が同極となるようにして前記補助磁石用溝に嵌装した永
久磁石である補助磁石とを有して構成したことを特徴と
する永久磁石式回転機の回転子。1. A main magnet groove provided at a predetermined interval in the circumferential direction and provided along the rotation axis direction, and a main magnet groove is provided between the main magnet groove and is provided along the rotation axis direction. An auxiliary magnet groove is provided, and a connecting portion is secured between the surface and the tip of the auxiliary magnet groove, and between the both ends of the main magnet groove and the base end of the auxiliary magnet groove. And the iron core which is integrally continuous in the circumferential direction and the radial direction, and the direction of the magnetic pole is along the radial direction of the iron core, and the magnetic poles on the surface side of the iron core are different from each other. The main magnet, which is a permanent magnet, and the direction of the magnetic pole are along the circumferential direction of the iron core, and one magnetic pole and the magnetic pole on the iron core surface side of the main magnet occupying this one side are the same pole. A permanent magnet type characterized by having an auxiliary magnet which is a permanent magnet fitted in the groove for the auxiliary magnet. The rotor of the turning point.
回転子において、 鉄心の外周部にこの鉄心の周方向に所定の間隔を有し且
つ回転軸方向に沿ってダンパ用溝を設け、これらのダン
パ溝中に占位する導体部とこれらの導体部の両端を各々
短絡する他の導体部とによって一体的に形成したダンバ
巻線を備えたことを特徴とする永久磁石式回転機の回転
子。2. The rotor of a permanent magnet type rotating machine according to claim 1, wherein a damper groove is provided on an outer peripheral portion of the iron core along a rotation axis direction at a predetermined interval in a circumferential direction of the iron core. A permanent magnet type rotating machine characterized by comprising a damper winding integrally formed by a conductor portion occupied in these damper grooves and another conductor portion which short-circuits both ends of these conductor portions respectively. Rotor.
転機の回転子において、 同極となる主磁石及びこれらの主磁石を嵌装するための
主磁石用溝を削除した構成であることを特徴とする永久
磁石式回転機の回転子。3. The rotor of a permanent magnet type rotating machine according to claim 1 or 2, wherein a main magnet having the same pole and a main magnet groove for fitting the main magnet are removed. A rotor of a permanent magnet type rotating machine, which is characterized in that
転機の回転子において、 主磁石を回転軸方向に２分割して回転軸方向の一方側か
らはＳ極となる主磁石及びこれらの主磁石を嵌装するた
めの主磁石用溝を削除し且つ他方側からはＮ極となる主
磁石及びこれらの主磁石を嵌装するための主磁石用溝を
削除した構成であることを特徴とする永久磁石式回転機
の回転子。4. The rotor for a permanent magnet type rotating machine according to claim 1 or 2, wherein the main magnet is divided into two parts in the rotation axis direction, and the S pole is formed from one side of the rotation axis direction, and these. The main magnet groove for fitting the main magnet is deleted, and the main magnet having the N pole and the main magnet groove for fitting these main magnets are deleted from the other side. The rotor of the characteristic permanent magnet type rotating machine.
磁石式回転機の回転子において、 主磁石用溝を鉄心表面側に凸の円弧状とし、前記主磁石
用溝の中央部と前記鉄心表面との間の鉄心幅と、前記主
磁石用溝の両端部と補助磁石用溝の基端部との間の鉄心
幅と、前記補助磁石用溝の先端部と前記鉄心表面との間
の鉄心幅とを略同一の寸法としたことを特徴とする永久
磁石式回転機の回転子。5. The rotor for a permanent magnet type rotating machine according to claim 1, 2, 3 or 4, wherein the main magnet groove has a convex arc shape on the iron core surface side, and the main magnet groove has a central portion. And an iron core width between the iron core surface, an iron core width between both ends of the main magnet groove and a base end portion of the auxiliary magnet groove, and a tip end portion of the auxiliary magnet groove and the iron core surface. A rotor of a permanent magnet type rotating machine, characterized in that the width of the iron core between the two is substantially the same.
永久磁石式回転機の回転子において、 極部のエアギャップが極間部のエアギャップよりも小さ
くなるよう鉄心の外周部に凹凸を設けたことを特徴とす
る永久磁石式回転機の回転子。6. The rotor of a permanent magnet type rotating machine according to claim 1, 2, 3, 4 or 5, wherein the air gap of the pole portion is smaller than the air gap of the inter-pole portion. A rotor for a permanent magnet type rotating machine, characterized in that irregularities are provided on the rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7073085A JPH08275419A (en) | 1995-03-30 | 1995-03-30 | Rotor of permanent magnet type rotary machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7073085A JPH08275419A (en) | 1995-03-30 | 1995-03-30 | Rotor of permanent magnet type rotary machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH08275419A true JPH08275419A (en) | 1996-10-18 |
Family
ID=13508151
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7073085A Pending JPH08275419A (en) | 1995-03-30 | 1995-03-30 | Rotor of permanent magnet type rotary machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH08275419A (en) |
Cited By (39)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6025667A (en) * | 1997-09-29 | 2000-02-15 | Fujitsu General Limited | Permanent magnet rotor type electric motor with different permanent magnet materials |
| JP2000197287A (en) * | 1998-12-28 | 2000-07-14 | Kusatsu Denki Kk | Motor and its manufacture |
| JP2002331986A (en) * | 2001-05-08 | 2002-11-19 | Meidensha Corp | Motor for power assisted bicycle |
| EP1471621A2 (en) * | 2003-04-24 | 2004-10-27 | Minebea Co., Ltd. | Rotor element for an electrical motor |
| KR100668974B1 (en) * | 2004-12-08 | 2007-01-16 | 삼성전자주식회사 | Synchronous motor |
| US7268454B2 (en) * | 2003-01-17 | 2007-09-11 | Magnetic Torque International, Ltd. | Power generating systems |
| US7321177B2 (en) * | 2004-06-24 | 2008-01-22 | Fanuc Ltd | Synchronous electric motor |
| US7548005B2 (en) | 2006-05-24 | 2009-06-16 | Honda Motor Co.Ltd. | Electric motor having improved relative phase control |
| JP2009254006A (en) * | 2008-04-01 | 2009-10-29 | Honda Motor Co Ltd | Motor |
| WO2009102135A3 (en) * | 2008-02-11 | 2009-12-03 | Park Kye-Jung | Motor with multiple yokes |
| JP2010213459A (en) * | 2009-03-10 | 2010-09-24 | Denso Corp | Claw pole type ipm motor |
| CN102570662A (en) * | 2012-01-09 | 2012-07-11 | 美的威灵电机技术（上海）有限公司 | Pole-following rotor of rotary motor |
| JP2014103789A (en) * | 2012-11-20 | 2014-06-05 | Ibaraki Univ | Permanent magnet embedded type motor |
| WO2014119022A1 (en) * | 2013-01-31 | 2014-08-07 | 多摩川精機株式会社 | Magnet arrangement structure for motor, rotor, and ipm motor |
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| US9906084B2 (en) | 2010-12-22 | 2018-02-27 | Fisher & Paykel Appliances Limited | Appliance, motor or stator |
| CN107809144A (en) * | 2016-09-08 | 2018-03-16 | Tdk株式会社 | Magnet, magnet layered product and motor |
| CN109560631A (en) * | 2017-09-27 | 2019-04-02 | 富士电机株式会社 | The permanent magnet type rotating electric machine of variable magnetic flow-through |
| CN109905006A (en) * | 2019-04-23 | 2019-06-18 | 山东理工大学 | Radially alternating permanent magnet drive motor for electric vehicle |
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| US11368073B2 (en) | 2017-12-28 | 2022-06-21 | Denso Corporation | Rotating electrical machine |
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-
1995
- 1995-03-30 JP JP7073085A patent/JPH08275419A/en active Pending
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|---|---|---|---|---|
| US6025667A (en) * | 1997-09-29 | 2000-02-15 | Fujitsu General Limited | Permanent magnet rotor type electric motor with different permanent magnet materials |
| JP2000197287A (en) * | 1998-12-28 | 2000-07-14 | Kusatsu Denki Kk | Motor and its manufacture |
| JP2002331986A (en) * | 2001-05-08 | 2002-11-19 | Meidensha Corp | Motor for power assisted bicycle |
| US7687956B2 (en) | 2003-01-17 | 2010-03-30 | Magnetic Torque International, Ltd. | Drive motor system |
| US7268454B2 (en) * | 2003-01-17 | 2007-09-11 | Magnetic Torque International, Ltd. | Power generating systems |
| US7196446B2 (en) | 2003-04-24 | 2007-03-27 | Minebea Co., Ltd. | Rotor for an electric motor |
| EP1471621A3 (en) * | 2003-04-24 | 2005-12-14 | Minebea Co., Ltd. | Rotor element for an electrical motor |
| EP1471621A2 (en) * | 2003-04-24 | 2004-10-27 | Minebea Co., Ltd. | Rotor element for an electrical motor |
| US7321177B2 (en) * | 2004-06-24 | 2008-01-22 | Fanuc Ltd | Synchronous electric motor |
| KR100668974B1 (en) * | 2004-12-08 | 2007-01-16 | 삼성전자주식회사 | Synchronous motor |
| US7548005B2 (en) | 2006-05-24 | 2009-06-16 | Honda Motor Co.Ltd. | Electric motor having improved relative phase control |
| WO2009102135A3 (en) * | 2008-02-11 | 2009-12-03 | Park Kye-Jung | Motor with multiple yokes |
| KR100946651B1 (en) * | 2008-02-11 | 2010-03-10 | 박계정 | Motor having yoke arranged concentrically |
| JP2009254006A (en) * | 2008-04-01 | 2009-10-29 | Honda Motor Co Ltd | Motor |
| JP2010213459A (en) * | 2009-03-10 | 2010-09-24 | Denso Corp | Claw pole type ipm motor |
| US10998784B2 (en) | 2010-12-22 | 2021-05-04 | Fisher & Paykel Appliances Limited | Appliance, motor or stator |
| US9906084B2 (en) | 2010-12-22 | 2018-02-27 | Fisher & Paykel Appliances Limited | Appliance, motor or stator |
| CN102570662A (en) * | 2012-01-09 | 2012-07-11 | 美的威灵电机技术（上海）有限公司 | Pole-following rotor of rotary motor |
| JP2014103789A (en) * | 2012-11-20 | 2014-06-05 | Ibaraki Univ | Permanent magnet embedded type motor |
| WO2014119022A1 (en) * | 2013-01-31 | 2014-08-07 | 多摩川精機株式会社 | Magnet arrangement structure for motor, rotor, and ipm motor |
| JP2014150659A (en) * | 2013-01-31 | 2014-08-21 | Tamagawa Seiki Co Ltd | Magnet arrangement structure of motor, rotor and IPM motor |
| JP2014192907A (en) * | 2013-03-26 | 2014-10-06 | Meidensha Corp | Embedded magnet motor |
| US10153672B2 (en) | 2013-11-20 | 2018-12-11 | Hitachi Automotive Systems, Ltd. | Rotary electric machine and electric vehicle provided with same |
| EP3073614A4 (en) * | 2013-11-20 | 2017-07-19 | Hitachi Automotive Systems, Ltd. | Rotary electric machine and electric vehicle provided with same |
| CN105811711A (en) * | 2016-05-11 | 2016-07-27 | 山东理工大学 | Claw pole electromagnetic and permanent magnet invisible magnetic pole hybrid type excitation driving motor |
| CN106026594A (en) * | 2016-05-12 | 2016-10-12 | 张学义 | Hub drive motor with built-in radial and tangential permanent magnet steels |
| CN105896848A (en) * | 2016-05-12 | 2016-08-24 | 张学义 | Method for producing combined magnetic pole and invisible magnetic pole driven motor rotor |
| JP2017225277A (en) * | 2016-06-16 | 2017-12-21 | 日産自動車株式会社 | Variable magnetic flux type rotary electric machine and method for manufacturing permanent magnet |
| CN107809144A (en) * | 2016-09-08 | 2018-03-16 | Tdk株式会社 | Magnet, magnet layered product and motor |
| US11843334B2 (en) | 2017-07-13 | 2023-12-12 | Denso Corporation | Rotating electrical machine |
| US11824428B2 (en) | 2017-07-21 | 2023-11-21 | Denso Corporation | Rotating electrical machine |
| US11664707B2 (en) | 2017-07-21 | 2023-05-30 | Denso Corporation | Rotating electrical machine |
| US11831228B2 (en) | 2017-07-21 | 2023-11-28 | Denso Corporation | Rotating electrical machine |
| US11374465B2 (en) | 2017-07-21 | 2022-06-28 | Denso Corporation | Rotating electrical machine |
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| US11664708B2 (en) | 2017-07-21 | 2023-05-30 | Denso Corporation | Rotating electrical machine |
| JP2019062673A (en) * | 2017-09-27 | 2019-04-18 | 富士電機株式会社 | Permanent magnet type rotary electric machine of variable magnetic flux type |
| US11088604B2 (en) | 2017-09-27 | 2021-08-10 | Fuji Electric Co., Ltd. | Variable magnetic flux-type permanent magnet rotary electric machine |
| CN109560631B (en) * | 2017-09-27 | 2022-02-25 | 富士电机株式会社 | Variable flux permanent magnet type rotating electric machine |
| CN109560631A (en) * | 2017-09-27 | 2019-04-02 | 富士电机株式会社 | The permanent magnet type rotating electric machine of variable magnetic flow-through |
| US11110793B2 (en) | 2017-12-28 | 2021-09-07 | Denso Corporation | Wheel driving apparatus |
| US11863023B2 (en) | 2017-12-28 | 2024-01-02 | Denso Corporation | Rotating electrical machine |
| US11368073B2 (en) | 2017-12-28 | 2022-06-21 | Denso Corporation | Rotating electrical machine |
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| US11664693B2 (en) | 2017-12-28 | 2023-05-30 | Denso Corporation | Rotating electrical machine |
| WO2019131912A1 (en) * | 2017-12-28 | 2019-07-04 | 株式会社デンソー | Rotating electric machine system |
| CN109905006A (en) * | 2019-04-23 | 2019-06-18 | 山东理工大学 | Radially alternating permanent magnet drive motor for electric vehicle |
| TWI714326B (en) * | 2019-10-29 | 2020-12-21 | 大銀微系統股份有限公司 | Rotor structure of permanent magnetism motor |
| CN112787437A (en) * | 2019-11-04 | 2021-05-11 | 大银微***股份有限公司 | Permanent magnet motor rotor structure |
| US11462960B2 (en) * | 2019-12-02 | 2022-10-04 | Hiwin Mikrosystem Corp. | Rotor with first and second permanent magnets having support members and slots |
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