JPH08107639A - Rotor of permanent magnet type synchronous electric rotating machine - Google Patents
Rotor of permanent magnet type synchronous electric rotating machineInfo
- Publication number
- JPH08107639A JPH08107639A JP7019710A JP1971095A JPH08107639A JP H08107639 A JPH08107639 A JP H08107639A JP 7019710 A JP7019710 A JP 7019710A JP 1971095 A JP1971095 A JP 1971095A JP H08107639 A JPH08107639 A JP H08107639A
- Authority
- JP
- Japan
- Prior art keywords
- permanent magnet
- rotor
- rotor core
- insertion hole
- magnet insertion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Abstract
Description
【産業上の利用分野】本発明は、永久磁石形同期回転電
機のロータに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of a permanent magnet type synchronous rotating electric machine.
【００１】[0101]
【従来の技術】従来技術の永久磁石発電機の回転子とし
て、回転軸の外周に円周方向に取付けられた永久磁石
と、この永久磁石上に取付けられた磁極を構成する複数
の磁性板と、この磁性板と交互に円周方向に接合されて
円筒体を形成し、かつ上記回転軸の外周に固定された複
数の非磁性部材を備えたものがある（例えば、特開平４
−１３８０４２号公報）。2. Description of the Related Art As a rotor of a conventional permanent magnet generator, a permanent magnet circumferentially mounted on the outer circumference of a rotating shaft and a plurality of magnetic plates constituting magnetic poles mounted on the permanent magnet. , A plurality of non-magnetic members fixed to the outer circumference of the rotary shaft are formed by alternately joining the magnetic plates in the circumferential direction to form a cylindrical body (see, for example, Japanese Patent Laid-Open No. Hei 4).
-138042).
【００２】[0092]
【発明が解決しようとする問題点】ところが、従来技術
では、部品点数が多く組立、精度および強度上の問題が
ある。本発明は、組立し易く、強度の高い、定出力範囲
をより高速回転領域まで広げることができる永久磁石形
同期回転電機のロータを実現することを目的とする。However, the prior art has a large number of parts and has problems in assembly, accuracy and strength. An object of the present invention is to realize a rotor of a permanent magnet type synchronous rotating electric machine which is easy to assemble and has a high strength and which can extend a constant output range to a higher speed rotation region.
【００３】[0093]
【課題を解決するための手段】上記問題を解決するた
め、磁性体よりなる円板状の薄板を軸方向に積層したロ
ータコア１と、このロータコア１に等極ピッチで設けた
漏洩磁束防止用の抜き穴３と、前記ロータコア１に所定
ピッチで設けた矩形の永久磁石挿入穴２と、この永久磁
石挿入穴２に挿入する永久磁石４よりなる永久磁石形同
期回転電機のロータにおいて、前記永久磁石挿入穴２を
１極ピッチ置きに設け、この永久磁石挿入穴２に、径方
向の極性を同一とした永久磁石４ａを挿入し、永久磁石
形同期回転電機のロータを構成する。また、前記永久磁
石を軸方向に分割し、おのおのの長さの和を永久磁石挿
入穴２の軸方向長さより短くし、ロータコアの両端面を
合わせたり端面より深く挿入したりして、永久磁石挿入
穴２の軸方向に磁気的空間部を形成する。さらに、前記
ロータコアを軸方向に３分割し、中央のロータコアに設
けた永久磁石挿入穴の高さを両側のものより高くし、中
央の永久磁石挿入穴にエネルギ積の低い永久磁石を、両
側の永久磁石挿入穴にエネルギ積の高い永久磁石を挿入
する。逆に、前記ロータコアを軸方向に３分割し、中央
のロータコアに設けた永久磁石挿入穴の高さを両側のも
のより低くし、中央の永久磁石挿入穴にエネルギ積の低
い永久磁石を、両側の永久磁石挿入穴にエネルギ積の高
い永久磁石を挿入する。In order to solve the above-mentioned problems, a rotor core 1 in which disk-shaped thin plates made of a magnetic material are axially laminated, and a magnetic flux leakage prevention provided in the rotor core 1 at an equal pole pitch are provided. In the rotor of a permanent magnet type synchronous rotating electric machine, which comprises a punched hole 3, a rectangular permanent magnet insertion hole 2 provided at a predetermined pitch in the rotor core 1, and a permanent magnet 4 inserted in the permanent magnet insertion hole 2, The insertion holes 2 are provided at every one pole pitch, and the permanent magnets 4a having the same radial polarity are inserted into the permanent magnet insertion holes 2 to form a rotor of a permanent magnet type synchronous rotating electric machine. Further, the permanent magnet is divided in the axial direction, and the sum of the lengths of the permanent magnets is made shorter than the axial length of the permanent magnet insertion hole 2 so that both end faces of the rotor core are aligned or inserted deeper than the end faces. A magnetic space is formed in the axial direction of the insertion hole 2. Further, the rotor core is divided into three parts in the axial direction, and the height of the permanent magnet insertion hole provided in the central rotor core is made higher than that of both sides, and a permanent magnet having a low energy product is provided in the central permanent magnet insertion hole on both sides. A permanent magnet with a high energy product is inserted into the permanent magnet insertion hole. On the contrary, the rotor core is divided into three parts in the axial direction, the height of the permanent magnet insertion hole provided in the central rotor core is made lower than that on both sides, and the permanent magnet having a low energy product is installed in the central permanent magnet insertion hole on both sides. Insert a permanent magnet with a high energy product into the permanent magnet insertion hole.
【００４】[004]
【作用】上記手段により、ロータを構成する部品が、ロ
ータコアと永久磁石の２部品となり、ロータコアが一体
に構成できる。また、永久磁石の個数が従来の半分にな
る。また、永久磁石の無いロータコア部に対向する電機
子の磁束密度が下がり、リラクタンスが増加する。With the above-described means, the rotor component is made into two components, the rotor core and the permanent magnet, and the rotor core can be integrally configured. In addition, the number of permanent magnets is half that of conventional ones. Further, the magnetic flux density of the armature facing the rotor core portion having no permanent magnet is reduced, and the reluctance is increased.
【００５】[0095]
【実施例】以下、本発明の実施例を図１（ａ）および
（ｂ）に基づいて説明する。円板状の磁性体薄板を積層
したロータコア１には、モータ極数と同数に等極ピッチ
で分割された磁極中心軸Ａに直交させて、極ピッチの１
つ置きに矩形の永久磁石挿入穴２を軸方向に貫通させて
設けてある。ロータコア１の外径側には、永久磁石挿入
穴２の両側に、外側に開いた扇形の漏れ磁束防止用の抜
き穴３を設けてある。永久磁石挿入穴２には、長さの和
が永久磁石挿入穴２と同じ長さとなる、径方向の磁性を
同じにした永久磁石４ａ、４ａを、永久磁石挿入穴２内
で端面が接するように、挿入してある。なお、永久磁石
４ａ、４ａは１本ものでもよい。Embodiments of the present invention will be described below with reference to FIGS. 1 (a) and 1 (b). The rotor core 1 in which disc-shaped magnetic thin plates are laminated has a pole pitch of 1 at right angles to the magnetic pole central axis A divided into the same number of motor poles at equal pole pitch.
Alternately, a rectangular permanent magnet insertion hole 2 is provided so as to penetrate therethrough in the axial direction. On the outer diameter side of the rotor core 1, on both sides of the permanent magnet insertion hole 2, there are provided fan-shaped holes 3 for preventing leakage flux which are open to the outside. The end faces of the permanent magnet insertion holes 2 are in contact with the permanent magnets 4a and 4a having the same radial magnetism, the sum of the lengths being the same as that of the permanent magnet insertion holes 2. Has been inserted. The number of permanent magnets 4a and 4a may be one.
【００６】図２は、第２の実施例を示す正面図である。
実施例の抜き穴３を浅いもの３ａと深いもの３ｂの２種
類とし、おのおのを交互に設け、前記永久磁石挿入穴２
の底部を、抜き穴３ａ、３ｂの底部を結ぶ直線上にロー
タの回転方向側に端部が下がるよう、傾斜を持たせて設
ける。このようにすることにより、リラクタンスに方向
性が生じるので、回転方向が決まっている場合は、起動
・変速が楽になる。FIG. 2 is a front view showing the second embodiment.
There are two types of holes 3 of the embodiment, a shallow one 3a and a deep one 3b, each of which is provided alternately, and the permanent magnet insertion hole 2 is formed.
Is provided with an inclination such that the end of the bottom part of the rotor 3a is located on the straight line connecting the bottoms of the holes 3a and 3b. By doing so, the reluctance has a directivity, and therefore, when the rotation direction is fixed, starting and shifting are facilitated.
【００７】図３は、本発明の第３の実施例を示し、断面
形状が永久磁石挿入穴２と相似で、長さの和２Ｌａが永
久磁石挿入穴２の軸方向長さより短い永久磁石４ａ、４
ａを径方向の極性を同じにし、永久磁石挿入穴２の左右
から、端面をロータコア１の端面に合わせて、挿入し固
定する。この結果、永久磁石挿入穴２の中央部には長さ
Ｌｂの磁気的空間部２１が形成させることになり、これ
に対向する電機子コア（図示せず）のティース部および
ヨーク部の磁束密度は、無負荷の時、ほとんど０にな
る。なお、磁気的空間部２１に、非磁性体を挿入した
り、樹脂をモールドしたりして、永久磁石４ａ、４ａの
固定を強固にするとよい。FIG. 3 shows a third embodiment of the present invention in which the cross-sectional shape is similar to that of the permanent magnet insertion hole 2 and the sum of the lengths 2La is shorter than the axial length of the permanent magnet insertion hole 2. Four
With a having the same radial polarity, a is inserted and fixed from the left and right of the permanent magnet insertion hole 2 with its end face aligned with the end face of the rotor core 1. As a result, a magnetic space portion 21 having a length Lb is formed in the central portion of the permanent magnet insertion hole 2, and the magnetic flux densities of the teeth portion and the yoke portion of the armature core (not shown) facing this are formed. Becomes almost 0 when there is no load. In addition, a non-magnetic material may be inserted into the magnetic space portion 21 or a resin may be molded to firmly fix the permanent magnets 4a and 4a.
【００８】図４は、本発明の第４の実施例を示し、第３
の実施例における、永久磁石４ａ、４ａの挿入深さを、
永久磁石挿入穴２の端面よりＬｂ／３だけ押し込む、そ
の結果、永久磁石挿入穴２の中央部と両端部に、長さが
Ｌｂ／３ずつの磁気的空間部２１が生じる。この磁気的
空間部２１に、非磁性体を挿入したり、樹脂をモールド
したりする場合は、両端部をアンバランス・ウエイトの
調整用として使用するとよい。FIG. 4 shows the fourth embodiment of the present invention, and the third embodiment
The insertion depth of the permanent magnets 4a and 4a in the embodiment of
The permanent magnet insertion hole 2 is pushed in by Lb / 3 from the end face, and as a result, the magnetic space portions 21 each having a length of Lb / 3 are formed in the central portion and both end portions of the permanent magnet insertion hole 2. When a non-magnetic material is inserted into this magnetic space 21 or a resin is molded, both ends may be used for adjusting the imbalance weight.
【００９】図５は、本発明の第５の実施例を示し、ロー
タコア１を軸方向に３分割し、第２の実施例の磁気的空
間部２１に相当する部分の永久磁石挿入穴２の高さを高
くし、エネルギ積の低い永久磁石を使用する場合を示
す。ロータコア１は軸方向に３分割し、第２の実施例に
おける、長さがＬａの１ａ部には、穴の高さが低い永久
磁石挿入穴２ａを、長さがＬｂの１ｂ部には、穴の高さ
が高い永久磁石挿入穴２ｂの２種類の永久磁石挿入穴を
設けてある。永久磁石挿入穴２ａには、エネルギ積が高
い永久磁石４ａ、４ａ（例えば、希土類磁石）を挿入
し、永久磁石挿入穴２ｂには、エネルギ積が低い永久磁
石４ｂ（例えば、フェライト系等）を挿入する。高価な
エネルギ積の高い永久磁石（希土類磁石）の投入量を少
なくしてある。FIG. 5 shows a fifth embodiment of the present invention, in which the rotor core 1 is divided into three parts in the axial direction, and the permanent magnet insertion hole 2 of the portion corresponding to the magnetic space portion 21 of the second embodiment is formed. The case where a permanent magnet having a high height and a low energy product is used is shown. The rotor core 1 is divided into three parts in the axial direction. In the second embodiment, a 1a portion having a length of La is provided with a permanent magnet insertion hole 2a having a low hole height, and a 1b portion having a length of Lb is provided. Two types of permanent magnet insertion holes, that is, a permanent magnet insertion hole 2b having a high hole height, are provided. Permanent magnets 4a and 4a having a high energy product (for example, rare earth magnets) are inserted in the permanent magnet insertion hole 2a, and permanent magnets 4b having a low energy product (for example, a ferrite system) are inserted in the permanent magnet insertion hole 2b. insert. The amount of expensive permanent magnets (rare earth magnets) having a high energy product is reduced.
【０１０】図６は、本発明の第６の実施例を示し、第４
の実施例におけるエネルギ積が高い永久磁石４ａ、４ａ
とエネルギ積が低い永久磁石４ｂの配置を逆にしたもの
である。第５の実施例における長さがＬａの１ａ部を、
長さがＬｂ／２の穴の高さが高い永久磁石挿入穴２ｄに
置き換え、長さがＬｂの１ｂ部を長さが２Ｌａの穴の高
さが低い永久磁石挿入穴２ｃに置き換える。また、エネ
ルギ積が高い永久磁石４ａ、４ａを、１本物の長さが２
Ｌａの永久磁石４ｃに置き換え、エネルギ積が低い永久
磁石４ｂを、長さがＬｂ／２に分割した永久磁石４ｄ、
４ｄに置き換える。前記永久磁石挿入穴２ｃには、エネ
ルギ積が高い永久磁石４ｃを、永久磁石挿入穴２ｄに
は、エネルギ積が低い永久磁石４ｄを挿入する。第４を
よび第６の実施例の場合、エネルギ積が高い永久磁石４
ａは最大エネルギ積が３０MGoeのＮｄ−Ｆｅ−Ｂ系希土
類磁石、エネルギ積が低い永久磁石４ｂは４MGOeのフェ
ライト磁石を用いた場合、永久磁石挿入穴２ａと永久磁
石挿入穴２ｂそれぞれの高さｈa 、ｈb の比は約３、長
さの比Ｌａ／Ｌｂは１としてある。この場合、無負荷
時、永久磁石挿入穴２ｂに対向する電機子コア（図示せ
ず）のティース部や、ヨーク部の磁束密度は、永久磁石
挿入穴２ａに対向する電機子コアのティース部や、ヨー
ク部の磁束密度の約１／３になる。第２ないし第５の実
施例においては、軸方向に設けた磁気的空間部２１また
はエネルギ積の低い永久磁石４ｂにより、磁束密度が下
がり、誘起電圧定数が小さくなる。FIG. 6 shows the sixth embodiment of the present invention, and the fourth embodiment
The permanent magnets 4a, 4a having a high energy product in the embodiment of
And the arrangement of the permanent magnet 4b having a low energy product is reversed. In the fifth embodiment, the 1a portion having a length of La is
The permanent magnet insertion hole 2d having a length of Lb / 2 and a high height is replaced, and the 1b portion having a length of Lb is replaced with a permanent magnet insertion hole 2c having a length of 2La and a low height. In addition, one permanent magnet 4a, 4a having a high energy product
The permanent magnet 4c of La is replaced, and the permanent magnet 4b having a low energy product is divided into lengths Lb / 2.
Replace with 4d. A permanent magnet 4c having a high energy product is inserted into the permanent magnet insertion hole 2c, and a permanent magnet 4d having a low energy product is inserted into the permanent magnet insertion hole 2d. In the case of the fourth and sixth embodiments, the permanent magnet 4 having a high energy product
When a is a Nd-Fe-B rare earth magnet with a maximum energy product of 30 MGoe and a permanent magnet 4b with a low energy product is a ferrite magnet of 4 MGOe, the height h of each of the permanent magnet insertion hole 2a and the permanent magnet insertion hole 2b is The ratio of a and h b is about 3, and the length ratio La / Lb is 1. In this case, when no load is applied, the teeth of the armature core (not shown) facing the permanent magnet insertion hole 2b and the magnetic flux density of the yoke are different from those of the teeth of the armature core facing the permanent magnet insertion hole 2a. , About 1/3 of the magnetic flux density of the yoke part. In the second to fifth embodiments, the magnetic space 21 provided in the axial direction or the permanent magnet 4b having a low energy product reduces the magnetic flux density and the induced voltage constant.
【０１１】[0111]
【発明の効果】上記の構成により、下記の効果がある。 （１）部品点数がロータコアと永久磁石の２点となり組
立が簡単になるとともに、ロータコアが一体構成できる
ので強度が向上する。 （２）永久磁石挿入穴の軸方向に磁気的空間部を設けた
り、エネルギ積の低い永久磁石を挿入したので、誘起電
圧定数が小さくなり、定出力範囲をより高速回転領域ま
で広げることができる。 （３）特に、第３の実施例の場合は、高価なエネルギ積
の高い永久磁石の使用量を少なくできる。The above-mentioned structure has the following effects. (1) The number of parts is two, that is, the rotor core and the permanent magnet, which simplifies the assembling and improves the strength because the rotor core can be integrally configured. (2) Since a magnetic space is provided in the axial direction of the permanent magnet insertion hole or a permanent magnet having a low energy product is inserted, the induced voltage constant is reduced, and the constant output range can be expanded to a high speed rotation range. . (3) Especially, in the case of the third embodiment, the amount of expensive permanent magnets having a high energy product can be reduced.
【図１】本発明の第１の実施例を示す、（ａ）正面図、
（ｂ）側断面図。FIG. 1A is a front view showing a first embodiment of the present invention,
(B) Side sectional view.
【図２】本発明の第２の実施例を示す、正面図。FIG. 2 is a front view showing a second embodiment of the present invention.
【図３】本発明の第３の実施例を示す、側断面図。FIG. 3 is a side sectional view showing a third embodiment of the present invention.
【図４】本発明の第４の実施例を示す、側断面図。FIG. 4 is a side sectional view showing a fourth embodiment of the present invention.
【図５】本発明の第５の実施例を示す、（ａ）正面図、
（ｂ）側断面図。FIG. 5 (a) is a front view showing a fifth embodiment of the present invention,
(B) Side sectional view.
【図６】本発明の第６の実施例を示す、側断面図。FIG. 6 is a side sectional view showing a sixth embodiment of the present invention.
１、１ａ、１ｂ ロータコア ２、２ａ、２ｂ、２ｃ、２ｄ 永久磁石挿入穴 ２１ 磁気的空間部 ３、３ａ、３ｂ 抜き穴 ４ａ、４ｂ、４ｃ、４ｄ 永久磁石 1, 1a, 1b Rotor core 2, 2a, 2b, 2c, 2d Permanent magnet insertion hole 21 Magnetic space part 3, 3a, 3b Extraction hole 4a, 4b, 4c, 4d Permanent magnet
Claims (7)
積層したロータコアと、このロータコアに等極ピッチで
設けた漏洩磁束防止用の抜き穴と、このロータコアに設
けた矩形の永久磁石挿入穴と、この永久磁石挿入穴に挿
入する永久磁石よりなる永久磁石形同期回転電機のロー
タにおいて、 前記永久磁石挿入穴を１極ピッチ置きに設け、この永久
磁石挿入穴に、径方向の極性を同一とした永久磁石を挿
入したことを特徴とする永久磁石形同期回転電機のロー
タ。1. A rotor core in which disk-shaped thin plates made of a magnetic material are axially laminated, holes for preventing leakage of magnetic flux provided in the rotor core at an equal pole pitch, and rectangular permanent magnets provided in the rotor core. In a rotor of a permanent magnet type synchronous rotating electric machine comprising insertion holes and permanent magnets inserted into the permanent magnet insertion holes, the permanent magnet insertion holes are provided at every one pole pitch, and the permanent magnet insertion holes have radial polarities. A permanent magnet type synchronous rotating electric machine rotor characterized in that a permanent magnet having the same shape is inserted.
類とし、おのおのを交互に設け、前記永久磁石挿入穴の
底部を、抜き穴の底部を結ぶ直線上にロータの回転方向
側に端部が下がるよう、傾斜を持たせて設けた請求項１
記載の永久磁石形同期回転電機のロータ。2. The shallow hole and the deep hole are provided in two types, each of which is provided alternately, and the bottom of the permanent magnet insertion hole is formed on a straight line connecting the bottoms of the holes and an end portion on the rotor rotation side. 2. The structure is provided with an inclination so that
A rotor for the permanent magnet type synchronous rotating electric machine described.
項１または２記載の永久磁石形同期回転電機のロータ。3. The rotor of a permanent magnet type synchronous rotating electric machine according to claim 1, wherein the permanent magnet is divided into two in the axial direction.
軸方向長さより短くし、ロータコアの両端面を合わせ、
前記永久磁石挿入穴の軸方向中央に磁気的空間部を形成
した請求項３記載の永久磁石形同期回転電機のロータ。4. The sum of the lengths of the permanent magnets is made shorter than the axial length of the rotor core, and both end faces of the rotor core are aligned,
The rotor of a permanent magnet type synchronous rotating electric machine according to claim 3, wherein a magnetic space portion is formed at an axial center of the permanent magnet insertion hole.
軸方向長さより短くし、ロータコアの両端面より深く挿
入し、前記永久磁石挿入穴の軸方向中央と両端部に磁気
的空間部を形成した請求項３記載の永久磁石形同期回転
電機のロータ。5. The sum of the lengths of the permanent magnets is made shorter than the axial length of the rotor core and is inserted deeper than both end faces of the rotor core, and magnetic space portions are formed at the axial center and both end portions of the permanent magnet insertion hole. The rotor of the permanent magnet type synchronous rotating electric machine according to claim 3, which is formed.
央のロータコアに設けた永久磁石挿入穴の高さを両側の
ものより高くし、中央の永久磁石挿入穴にエネルギ積の
低い永久磁石を、両側の永久磁石挿入穴にエネルギ積の
高い永久磁石を挿入した請求項１ないし５いずれか１項
に記載の永久磁石形同期回転電機のロータ。6. The rotor core is divided into three parts in the axial direction, the height of the permanent magnet insertion hole provided in the central rotor core is made higher than that of both sides, and a permanent magnet having a low energy product is placed in the central permanent magnet insertion hole. The rotor for a permanent magnet type synchronous rotating electric machine according to any one of claims 1 to 5, wherein permanent magnets having a high energy product are inserted into the permanent magnet insertion holes on both sides.
央のロータコアに設けた永久磁石挿入穴の高さを両側の
ものより低くし、中央の永久磁石挿入穴にエネルギ積の
低い永久磁石を、両側の永久磁石挿入穴にエネルギ積の
高い永久磁石を挿入した請求項１ないし６いずれか１項
に記載の永久磁石形同期回転電機のロータ。7. The rotor core is divided into three parts in the axial direction, the height of the permanent magnet insertion hole provided in the central rotor core is made lower than that of both sides, and a permanent magnet having a low energy product is placed in the central permanent magnet insertion hole. 7. The rotor for a permanent magnet type synchronous rotating electric machine according to claim 1, wherein permanent magnets having a high energy product are inserted into the permanent magnet insertion holes on both sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01971095A JP3582667B2 (en) | 1994-08-10 | 1995-01-11 | Permanent magnet type synchronous rotating electric machine rotor |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6-210410 | 1994-08-10 | ||
| JP21041094 | 1994-08-10 | ||
| JP01971095A JP3582667B2 (en) | 1994-08-10 | 1995-01-11 | Permanent magnet type synchronous rotating electric machine rotor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08107639A true JPH08107639A (en) | 1996-04-23 |
| JP3582667B2 JP3582667B2 (en) | 2004-10-27 |
Family
ID=26356555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01971095A Expired - Fee Related JP3582667B2 (en) | 1994-08-10 | 1995-01-11 | Permanent magnet type synchronous rotating electric machine rotor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3582667B2 (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0860929A2 (en) * | 1997-02-21 | 1998-08-26 | Aisin Aw Co., Ltd. | Permanent magnet type synchronous motor |
| EP0905858A1 (en) * | 1997-09-26 | 1999-03-31 | Fujitsu General Limited | Permanent magnet rotor type electric motor |
| US6234767B1 (en) | 1997-10-01 | 2001-05-22 | Denyo Co., Lmtd. | Rotor having permanent magnet and mechanism for cooling the same |
| JP2001218401A (en) * | 2000-02-04 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Permanent magnet synchronous motor |
| US6798103B2 (en) | 1996-10-18 | 2004-09-28 | Hitachi, Ltd. | Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine |
| DE102005002332A1 (en) * | 2005-01-18 | 2006-07-27 | Daimlerchrysler Ag | Rotor for permanently excited electric machine e.g. electric drive motor of motor vehicle has magnets held in grooves of rotor by press fit whereby recess adjacent to the groove is arranged in the area around grooves |
| US7105971B2 (en) | 2002-04-15 | 2006-09-12 | Denso Corporation | Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor |
| JP2010068600A (en) * | 2008-09-09 | 2010-03-25 | Mitsubishi Electric Corp | Permanent magnet motor and hermetic compressor |
| JP2010259304A (en) * | 2009-04-28 | 2010-11-11 | Asmo Co Ltd | Rotor and motor |
| JP2014121265A (en) * | 2012-12-17 | 2014-06-30 | Lg Innotek Co Ltd | Motor |
| DE10253950B4 (en) * | 2001-11-20 | 2018-02-15 | Aisin Seiki K.K. | Synchronous machine of permanent magnet type |
| JP2018074868A (en) * | 2016-11-04 | 2018-05-10 | 三菱電機株式会社 | Magnet embedded rotary electric machine and manufacturing method thereof |
| CN109888949A (en) * | 2019-03-05 | 2019-06-14 | 浙江晋一特种电机有限公司 | A kind of rotor core and its installation method for permanent magnet synchronous motor |
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| US10673291B2 (en) * | 2015-06-17 | 2020-06-02 | Mitsubishi Electric Corporation | Permanent-magnet electric motor |
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1995
- 1995-01-11 JP JP01971095A patent/JP3582667B2/en not_active Expired - Fee Related
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| US7808144B2 (en) | 1996-10-18 | 2010-10-05 | Hitachi, Ltd. | Permanent magnet electric rotating machine and electromotive vehicle using permanent magnet electric rotating machine |
| EP0860929A3 (en) * | 1997-02-21 | 1998-10-21 | Aisin Aw Co., Ltd. | Permanent magnet type synchronous motor |
| EP0860929A2 (en) * | 1997-02-21 | 1998-08-26 | Aisin Aw Co., Ltd. | Permanent magnet type synchronous motor |
| EP0905858A1 (en) * | 1997-09-26 | 1999-03-31 | Fujitsu General Limited | Permanent magnet rotor type electric motor |
| US6234767B1 (en) | 1997-10-01 | 2001-05-22 | Denyo Co., Lmtd. | Rotor having permanent magnet and mechanism for cooling the same |
| JP2001218401A (en) * | 2000-02-04 | 2001-08-10 | Matsushita Electric Ind Co Ltd | Permanent magnet synchronous motor |
| DE10253950B4 (en) * | 2001-11-20 | 2018-02-15 | Aisin Seiki K.K. | Synchronous machine of permanent magnet type |
| US7105971B2 (en) | 2002-04-15 | 2006-09-12 | Denso Corporation | Permanent-magnet rotor for an inner rotor type electric rotary machine and magnet-saving type rotor for a synchronous motor |
| DE102005002332A1 (en) * | 2005-01-18 | 2006-07-27 | Daimlerchrysler Ag | Rotor for permanently excited electric machine e.g. electric drive motor of motor vehicle has magnets held in grooves of rotor by press fit whereby recess adjacent to the groove is arranged in the area around grooves |
| JP2010068600A (en) * | 2008-09-09 | 2010-03-25 | Mitsubishi Electric Corp | Permanent magnet motor and hermetic compressor |
| JP2010259304A (en) * | 2009-04-28 | 2010-11-11 | Asmo Co Ltd | Rotor and motor |
| JP2014121265A (en) * | 2012-12-17 | 2014-06-30 | Lg Innotek Co Ltd | Motor |
| JP2018074868A (en) * | 2016-11-04 | 2018-05-10 | 三菱電機株式会社 | Magnet embedded rotary electric machine and manufacturing method thereof |
| CN109888949B (en) * | 2019-03-05 | 2020-03-24 | 浙江晋一特种电机有限公司 | Rotor core for permanent magnet synchronous motor and mounting method thereof |
| CN109888949A (en) * | 2019-03-05 | 2019-06-14 | 浙江晋一特种电机有限公司 | A kind of rotor core and its installation method for permanent magnet synchronous motor |
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| Publication number | Publication date |
|---|---|
| JP3582667B2 (en) | 2004-10-27 |
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