JP2008278553A - Rotor of rotating electric machine and rotating electric machine - Google Patents

Rotor of rotating electric machine and rotating electric machine Download PDF

Info

Publication number
JP2008278553A
JP2008278553A JP2007115609A JP2007115609A JP2008278553A JP 2008278553 A JP2008278553 A JP 2008278553A JP 2007115609 A JP2007115609 A JP 2007115609A JP 2007115609 A JP2007115609 A JP 2007115609A JP 2008278553 A JP2008278553 A JP 2008278553A
Authority
JP
Japan
Prior art keywords
rotor
rotor core
outer peripheral
magnet insertion
tip
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
Application number
JP2007115609A
Other languages
Japanese (ja)
Other versions
JP5159153B2 (en
Inventor
Masakatsu Matsubara
正克 松原
Takao Hirano
恭男 平野
Takashi Hanai
隆 花井
Sukeyasu Mochizuki
資康 望月
Wataru Ito
伊藤　　渉
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.)
Toshiba Corp
Toshiba Industrial Products and Systems Corp
Original Assignee
Toshiba Corp
Toshiba Industrial Products Manufacturing Corp
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 Toshiba Corp, Toshiba Industrial Products Manufacturing Corp filed Critical Toshiba Corp
Priority to JP2007115609A priority Critical patent/JP5159153B2/en
Publication of JP2008278553A publication Critical patent/JP2008278553A/en
Application granted granted Critical
Publication of JP5159153B2 publication Critical patent/JP5159153B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

Landscapes

  • Permanent Magnet Type Synchronous Machine (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To prevent concentration of stress at a continuous portion from the bottom of an outer circumferential slot of a rotor core to the outer circumference of a chip portion even if the rotor rotates while reducing torque ripple, iron loss and higher harmonics. <P>SOLUTION: The rotor of a rotating electric machine comprises a rotor core 11, a plurality of magnet insertion holes 13 provided in the outer circumferential part of the rotor core 11 at constant intervals in the circumferential direction, permanent magnets 14 inserted into the magnet insertion holes 13 respectively for forming a magnetic pole, clearance holes 15 and 16 for limiting flux leakage at the end of the permanent magnet 14 provided to form a chip portion 18 at the end of the magnet insertion holes 13 between the outer circumference of the rotor core 11, an circumferential slot 21 provided at the outer circumferential part of the rotor core 11 and having a range from a position of electrical angle ϕ<SB>1</SB>for the d axis to a position of electrical angle ϕ<SB>2</SB>near the chip portion 18, and a chip slot 22 provided at the outer circumferential part of the rotor core 11 so as to be connected to the outer circumferential slot 21 and forms the outer circumference of the chip portion 18. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、磁極として永久磁石を備えた回転電機の回転子及び回転電機に関する。   The present invention relates to a rotor of a rotating electrical machine including a permanent magnet as a magnetic pole and the rotating electrical machine.

一般に、電気自動車やハイブリット車などの車両用モータのように使用電圧が高いところで使用される回転電機には、トルクリプル、鉄損及び高調波の低減が求められている。そのため、回転子鉄心の外周部に外周溝部を形成した回転電機の回転子が考えられている（例えば、特許文献１参照）。   In general, a rotating electrical machine used at a high working voltage such as a vehicle motor such as an electric vehicle or a hybrid vehicle is required to reduce torque ripple, iron loss, and harmonics. Therefore, the rotor of the rotary electric machine which formed the outer periphery groove part in the outer peripheral part of the rotor iron core is considered (for example, refer patent document 1).

図６には、従来の回転子を構成する回転子鉄心１０１の外周部の一部が示されている。回転子鉄心１０１は、外径寸法がＤである円環状の多数の珪素鋼板を積層して構成されている。回転子鉄心１０１の外周部には、外周に向かうに従って対向距離が順次大となる一対の磁石挿入孔部１０２，１０２が複数対、周方向に一定の間隔を存して設けられている（図６では一対図示）。この場合、一対の磁石挿入孔部１０２，１０２は、外周側からみてハ字形になっている。   FIG. 6 shows a part of the outer peripheral portion of a rotor core 101 constituting a conventional rotor. The rotor core 101 is configured by laminating a large number of annular silicon steel plates having an outer diameter dimension of D. A plurality of pairs of magnet insertion hole portions 102 and 102 whose opposing distances sequentially increase toward the outer periphery are provided on the outer peripheral portion of the rotor core 101 with a constant interval in the circumferential direction (see FIG. 6 shows a pair). In this case, the pair of magnet insertion hole portions 102 and 102 has a C shape when viewed from the outer peripheral side.

これらの磁石挿入孔部１０２には、磁極形成用の永久磁石１０３が夫々挿入固定され、これにより、磁石挿入孔部１０２の両端部に逃げ孔部１０４，１０５が形成される。ここで、逃げ孔部１０４は、一対の永久磁石１０３，１０３間（磁極）の中心部分、即ち、固定子鉄心（図示せず）側で生じる磁束の通り難い部分のｄ軸に近い側に位置し、逃げ孔部１０５は、外周側に位置する。又、近接する逃げ孔部１０４，１０４間にブリッジ部１０６が必然的に形成され、磁石挿入孔部１０２の逃げ孔部１０５の端部と回転子鉄心１０１の外周との間にチップ部１０７が必然的に形成される。尚、図示はしないが、ｄ軸と周方向に隣合うｄ軸との間にあって、固定子鉄心側で生じた磁束が通り易い部分をｑ軸とする。   In these magnet insertion holes 102, permanent magnets 103 for forming magnetic poles are inserted and fixed, respectively, so that escape holes 104 and 105 are formed at both ends of the magnet insertion hole 102, respectively. Here, the escape hole portion 104 is located on the side close to the d-axis of the central portion between the pair of permanent magnets 103 and 103 (magnetic pole), that is, the portion where the magnetic flux generated on the stator core (not shown) side is difficult to pass. The escape hole portion 105 is located on the outer peripheral side. In addition, a bridge portion 106 is inevitably formed between the adjacent escape holes 104 and 104, and a tip portion 107 is provided between the end of the escape hole 105 of the magnet insertion hole 102 and the outer periphery of the rotor core 101. Inevitably formed. Although not shown, a portion between the d-axis and the d-axis that is adjacent in the circumferential direction and through which the magnetic flux generated on the stator core side easily passes is defined as the q-axis.

逃げ孔部１０５から回転子鉄心１０１の外周部までの最短の長さ、即ち、チップ部１０７の厚さ寸法ｔ１は、回転子の回転によって、永久磁石１０３による遠心力を受けても破損しない強度を有し、且つ、永久磁石１０３の端部の磁束漏洩が大きくならないように、予め設定されている。 Shortest length from the relief holes 105 to the outer peripheral portion of the rotor core 101, i.e., the thickness t 1 of the chip 107, by rotation of the rotor, not damaged even when subjected to centrifugal force by the permanent magnets 103 The strength is set in advance so that the magnetic flux leakage at the end of the permanent magnet 103 does not increase.

ここで、回転子鉄心１０１の外周部には、永久磁石１０３に対応して深さ寸法がｔ２である外周溝部１０８が形成されている。この外周溝部１０８の底部の範囲は、所定の角度（ｄ軸に対して電気角φ１）を存する位置から、所定の角度（ｄ軸に対して電気角φ２）を存する位置までである。電気角φ１に溝があると、トルクリプル及び鉄損の低減が可能となり、電気角φ２に溝があると、永久磁石１０３の磁束の立上がりが制限され、高調波の低減が可能となる。電気角φ２は、例えば、ｄ軸より離れる方向側（ｑ軸側）に存するチップ部１０７近傍（ｑ軸に最も近い永久磁石１０３の短尺の端面１０３ａの延長線と回転子鉄心１０１の外周と交差する位置）と回転子鉄心１０１の中心とを結ぶ直線と、ｄ軸とのなす角である。
特開２００４−３２８９５６号公報 Here, an outer peripheral groove portion 108 having a depth dimension t 2 is formed on the outer peripheral portion of the rotor core 101 corresponding to the permanent magnet 103. The range of the bottom of the outer peripheral groove 108 is from a position having a predetermined angle (electrical angle φ 1 with respect to the d axis) to a position having a predetermined angle (electrical angle φ 2 with respect to the d axis). If there is a groove at the electrical angle φ 1 , torque ripple and iron loss can be reduced, and if there is a groove at the electrical angle φ 2 , the rise of the magnetic flux of the permanent magnet 103 is limited, and harmonics can be reduced. The electrical angle φ 2 is, for example, in the vicinity of the tip portion 107 on the direction side away from the d-axis (q-axis side) (extension line of the short end surface 103a of the permanent magnet 103 closest to the q-axis and the outer periphery of the rotor core 101) This is the angle formed by the d-axis and the straight line connecting the intersection) and the center of the rotor core 101.
Japanese Patent Laid-Open No. 2004-328956

しかしながら、回転子鉄心１０１の外周部に外周溝部１０８を形成すると、外周溝部１０８の底部からチップ部１０７の外周（回転子の外周）までの連なり部分１０９は、段差の形状になり、回転子の回転によって永久磁石１０３による遠心力を受けると、この連なり部分１０９に応力が集中し易く、破損する虞がある。特に、回転電機を高速回転で使用する場合には、上記連なり部分１０９に、より大きな応力が集中し易くなる。
又、チップ部１０７の厚さ寸法ｔ１を大きくすることも考えられるが、磁束漏洩が大きくなるため、好ましくない。 However, when the outer peripheral groove portion 108 is formed on the outer peripheral portion of the rotor core 101, the continuous portion 109 from the bottom of the outer peripheral groove portion 108 to the outer periphery of the tip portion 107 (the outer periphery of the rotor) becomes a step shape, When the centrifugal force by the permanent magnet 103 is received by the rotation, the stress tends to concentrate on the continuous portion 109 and there is a risk of breakage. In particular, when the rotating electrical machine is used at high speed rotation, a larger stress is easily concentrated on the continuous portion 109.
Furthermore, it is conceivable to increase the thickness t 1 of the chip 107, the magnetic flux leakage increases, undesirably.

本発明は、上記の事情に鑑みてなされたものであり、その目的は、トルクリプル、鉄損及び高調波の低減ができ、且つ、回転子が回転しても、回転子鉄心の外周溝部の底部からチップ部の外周までの連なり部分に応力が集中し難い回転電機の回転子及び回転電機を提供することである。   The present invention has been made in view of the above circumstances, and its purpose is to reduce torque ripple, iron loss and harmonics, and even if the rotor rotates, the bottom of the outer peripheral groove of the rotor core An object of the present invention is to provide a rotor of a rotating electrical machine and a rotating electrical machine in which stress is unlikely to concentrate on a continuous part from the outer periphery of the chip part to the outer periphery of the chip part.

本発明の回転電機の回転子は、回転子鉄心と、この回転子鉄心の外周部に周方向に一定の間隔を存して設けられた複数の磁石挿入孔部と、これらの磁石挿入孔部に夫々挿入固定された磁極形成用の永久磁石と、前記磁石挿入孔部の端部に前記回転子鉄心の外周との間にチップ部を形成するように設けられ、前記永久磁石の端部の磁束漏洩を制限するための逃げ孔部と、前記回転子鉄心の外周部に設けられ、前記磁極の中心に対して所定の角度を存する位置からチップ部近傍の位置までの所定の範囲を有する外周溝部と、前記回転子鉄心の外周部に前記外周溝部に連なるように設けられ、前記チップ部の外周をなすチップ溝部とを具備してなることを特徴としている（請求項１の発明）。   The rotor of the rotating electrical machine of the present invention includes a rotor core, a plurality of magnet insertion holes provided at a constant interval in the circumferential direction on the outer periphery of the rotor core, and these magnet insertion holes. Are formed so as to form a tip portion between the permanent magnet for magnetic pole formation inserted and fixed to each other and the outer periphery of the rotor core at the end of the magnet insertion hole. An escape hole for limiting magnetic flux leakage, and an outer periphery provided in an outer peripheral part of the rotor core and having a predetermined range from a position having a predetermined angle to the center of the magnetic pole to a position in the vicinity of the tip part A groove portion and a tip groove portion provided on the outer peripheral portion of the rotor core so as to be continuous with the outer peripheral groove portion and forming the outer periphery of the tip portion are provided (invention of claim 1).

又、本発明の回転電機は、固定子鉄心と、この固定子鉄心に着装されたコイルと、請求項１ないし３のいずれかに記載の回転子とを具備したことを特徴としている（請求項４の発明）。   According to another aspect of the present invention, there is provided a rotating electrical machine including a stator iron core, a coil attached to the stator iron core, and the rotor according to any one of claims 1 to 3. Invention of 4).

本発明によれば、回転子鉄心の外周部に、外周溝部に連なり、且つ、チップ部の外周をなすチップ溝部を設けたので、外周溝部でトルクリプル、鉄損及び高調波の低減が可能となると共に、外周溝部の底部からチップ部の外周までにかけての連なり部分の段差が小さくなるので、回転子の回転よって永久磁石による遠心力を受けても、この連なり部分での応力の集中を生じ難くすることができる。   According to the present invention, since the tip groove portion that is continuous with the outer peripheral groove portion and forms the outer periphery of the tip portion is provided in the outer peripheral portion of the rotor core, torque ripple, iron loss, and harmonics can be reduced at the outer peripheral groove portion. At the same time, since the level difference in the continuous portion from the bottom of the outer peripheral groove portion to the outer periphery of the tip portion is reduced, stress concentration at this continuous portion is less likely to occur even when the rotor is subjected to centrifugal force due to the rotation of the rotor. be able to.

以下、本発明の第１の実施形態を、図１及び図２を参照して説明する。
図２に本実施形態に係る回転電機１の固定子２及び固定子２の内周側に位置する回転子３の概略構成を示す。
固定子２は、固定子鉄心４に、複数相、例えば三相コイルたるＵ相コイル５、Ｖ相コイル６、Ｗ相コイル７が着装されて構成される。 Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 2 shows a schematic configuration of the stator 2 of the rotating electrical machine 1 according to the present embodiment and the rotor 3 positioned on the inner peripheral side of the stator 2.
The stator 2 is configured by mounting a plurality of phases, for example, a U-phase coil 5, a V-phase coil 6, and a W-phase coil 7, which are three-phase coils, on a stator core 4.

固定子鉄心４は、複数枚の鋼板が積層されて一体的に結着されて形成された円環形状をなしている。そして、固定子鉄心４の内周面には、各相のコイル５，６，７を配設させるためのスロット８が複数個所、例えば４８箇所に形成されている。
回転子３は、外径寸法がＤである円環状の多数の珪素鋼板を積層してなる回転子鉄心１１と、回転子鉄心１１の内部に設けたれた回転軸１２を有している。 The stator core 4 has an annular shape formed by stacking and integrally bonding a plurality of steel plates. On the inner peripheral surface of the stator core 4, slots 8 for arranging the coils 5, 6, 7 of each phase are formed at a plurality of places, for example, 48 places.
The rotor 3 includes a rotor core 11 formed by laminating a large number of annular silicon steel plates having an outer diameter dimension D, and a rotating shaft 12 provided inside the rotor core 11.

図１には、回転子鉄心１１の外周部の一部が示されている。
回転子鉄心１１の外周部には、外周に向かうに従って対向距離が順次大となる一対の磁石挿入孔部１３，１３が複数対、例えば八対、周方向に一定の間隔を存して設けられている（図１では一対図示）。この場合、一対の磁石挿入孔部１３，１３は、外周側からみてハ字形になっている。 FIG. 1 shows a part of the outer periphery of the rotor core 11.
The outer periphery of the rotor core 11 is provided with a plurality of pairs, for example, eight pairs, of a pair of magnet insertion hole portions 13 and 13 having a facing distance that gradually increases toward the outer periphery, with a constant interval in the circumferential direction. (A pair is shown in FIG. 1). In this case, the pair of magnet insertion hole portions 13 and 13 has a C shape when viewed from the outer peripheral side.

これらの磁石挿入孔部１３には、磁極形成用の永久磁石１４が夫々挿入固定され、これにより、磁石挿入孔部１３の両端部に逃げ孔部１５，１６が形成される。ここで、逃げ孔部１５は、一対の永久磁石１４，１４間（磁極）の中心部分、即ち、固定子鉄心４側で生じた磁束が通り難い部分のｄ軸に近い側に位置し、逃げ孔部１６は、外周側に位置する。この場合、近接する逃げ孔部１５，１５間にブリッジ部１７が必然的に形成され、逃げ孔部１６と回転子鉄心１１の外周との間にチップ部１８が必然的に形成される。尚、ｄ軸と周方向に隣合うｄ軸との間にあって、固定子鉄心４側で生じる磁束の通り易い部分をｑ軸（図１参照）とする。   In these magnet insertion holes 13, permanent magnets 14 for forming magnetic poles are inserted and fixed, respectively, so that escape holes 15 and 16 are formed at both ends of the magnet insertion hole 13. Here, the escape hole portion 15 is located at the center portion between the pair of permanent magnets 14 and 14 (magnetic poles), that is, on the side close to the d-axis where the magnetic flux generated on the stator core 4 side is difficult to pass. The hole 16 is located on the outer peripheral side. In this case, the bridge portion 17 is inevitably formed between the adjacent escape hole portions 15 and 15, and the tip portion 18 is inevitably formed between the escape hole portion 16 and the outer periphery of the rotor core 11. A portion between the d-axis and the d-axis that is adjacent in the circumferential direction, where the magnetic flux generated on the stator core 4 side easily passes, is defined as a q-axis (see FIG. 1).

逃げ孔部１６から回転子鉄心１１の外周部までの最短の長さ、即ち、チップ部１８の厚さ寸法ｔ１は、回転子３の回転によって永久磁石１４による遠心力を受けても破損しない強度を有し、且つ、永久磁石１４の端部の磁束漏洩が大きくならないように設定されている。 The shortest length from the escape hole portion 16 to the outer peripheral portion of the rotor core 11, that is, the thickness dimension t 1 of the tip portion 18, is not damaged even if it receives centrifugal force from the permanent magnet 14 due to the rotation of the rotor 3. It has strength and is set so that magnetic flux leakage at the end of the permanent magnet 14 does not increase.

さて、回転子鉄心１１の外周部には、永久磁石１４に対応して深さ寸法がｔ２の底部を有し、その底部が回転子鉄心１１と同心円をなす外周溝部２１が形成されている。この外周溝部２１の底部の範囲は、所定の角度（ｄ軸に対して電気角φ１）を存する位置から、所定の角度（ｄ軸に対して電気角φ２）を存する位置まで、即ち、ｄ軸より離れる方向側（ｑ軸側）に存するチップ部１８近傍までの範囲である。電気角φ１に溝があると、トルクリプル及び鉄損の低減が可能となり、電気角φ２に溝があると、永久磁石１０３の磁束の立上がりが制限され、高調波の低減が可能となる（例えば、特許文献１参照）。この場合、電気角φ２は、例えば、ｄ軸より離れる方向側（ｑ軸側）に存するチップ部１８近傍（ｑ軸に最も近い永久磁石１４の短尺の端面１４ａの延長線と回転子鉄心１１の外周と交差する位置）と回転子鉄心１１の中心とを結ぶ直線と、ｄ軸とのなす角である。 Now, on the outer peripheral portion of the rotor core 11, there is formed an outer peripheral groove portion 21 having a bottom portion having a depth dimension t 2 corresponding to the permanent magnet 14, and the bottom portion forming a concentric circle with the rotor core 11. . The range of the bottom of the outer peripheral groove 21 ranges from a position having a predetermined angle (electrical angle φ 1 with respect to the d axis) to a position having a predetermined angle (electrical angle φ 2 with respect to the d axis), that is, This is a range up to the vicinity of the tip 18 on the direction side (q-axis side) away from the d-axis. If there is a groove in the electrical angle φ 1 , torque ripple and iron loss can be reduced, and if there is a groove in the electrical angle φ 2 , the rise of the magnetic flux of the permanent magnet 103 is limited and harmonics can be reduced ( For example, see Patent Document 1). In this case, the electrical angle φ 2 is, for example, in the vicinity of the tip portion 18 existing on the direction side (q-axis side) away from the d-axis (extension line of the short end surface 14 a of the permanent magnet 14 closest to the q-axis and the rotor core 11. The angle formed by the d-axis and the straight line connecting the center of the rotor core 11 and the position where the outer periphery of the rotor core 11 intersects.

そして、回転子鉄心１１の外周部において、外周溝部２１に連なるようにチップ溝部２２が設けられている。チップ溝部２２は、深さ寸法がｔ３の底部を有し、チップ部１８の外周をなすように、逃げ孔部１６の周方向の長さに対応した長さ分だけ周方向に延びている。このチップ溝部２２の底部は、回転子鉄心１１と同心円をなしている。
ここで、チップ溝部２２の深さ寸法ｔ３は、外周溝部２１の深さ寸法ｔ２と同じであり（ｔ２＝ｔ３）、外周溝部２１とチップ溝部２２との連なり部分２３では、段差が無い形状になる。 A chip groove 22 is provided on the outer periphery of the rotor core 11 so as to be continuous with the outer periphery groove 21. The tip groove portion 22 has a bottom portion having a depth dimension of t 3 and extends in the circumferential direction by a length corresponding to the circumferential length of the escape hole portion 16 so as to form the outer periphery of the tip portion 18. . The bottom of the chip groove 22 is concentric with the rotor core 11.
Here, the depth dimension t 3 of the chip groove portion 22 is the same as the depth dimension t 2 of the outer peripheral groove portion 21 (t 2 = t 3 ), and a step is formed at the continuous portion 23 between the outer peripheral groove portion 21 and the chip groove portion 22. There is no shape.

次に、回転子３の作用及び効果について説明する。
上記構成の回転子３には、磁束の通り難い部分のｄ軸と、磁束の通り易い部分のｑ軸とが形成される（所謂磁気的凹凸が形成される）ので、これらｄ軸及びｑ軸と、固定子２との空隙部分で、固定子２に着装されたコイル５，６，７に電流を流すことにより蓄えられる磁気エネルギーが異なり、この磁気エネルギーの変化によりトルクが発生する。又、回転子３の回転子鉄心１１には、永久磁石１４が設けられているので、永久磁石１４と固定子２の磁極との間の磁気吸引力及び磁気反発力によってもトルクは発生する。これにより、回転子３が回転するようになる。 Next, the operation and effect of the rotor 3 will be described.
In the rotor 3 having the above-described configuration, a d-axis that is difficult to pass magnetic flux and a q-axis that is easy to pass magnetic flux are formed (so-called magnetic unevenness is formed). And the magnetic energy stored by flowing an electric current through the coils 5, 6 and 7 attached to the stator 2 is different in the gap between the stator 2 and torque is generated by the change in the magnetic energy. Further, since the permanent magnet 14 is provided on the rotor core 11 of the rotor 3, torque is also generated by the magnetic attractive force and the magnetic repulsive force between the permanent magnet 14 and the magnetic pole of the stator 2. Thereby, the rotor 3 comes to rotate.

このような本実施形態によれば、チップ部１８が形成されることにより、回転子３の回転によって永久磁石１４による遠心力を受けても破損しない強度を有し、且つ、永久磁石１４の端部の磁束漏洩を制限することができる。又、外周溝部２１を形成することにより、トルクリプル、鉄損及び高調波の低減が可能となる。   According to the present embodiment, by forming the tip portion 18, the tip portion 18 has a strength that does not break even when the rotor 3 receives centrifugal force due to the rotation of the permanent magnet 14, and the end of the permanent magnet 14. The magnetic flux leakage of the part can be limited. Further, by forming the outer peripheral groove portion 21, torque ripple, iron loss, and harmonics can be reduced.

そして、回転子鉄心１１の外周部に、外周溝部２１に連なり、且つ、チップ部１８の外周をなすチップ溝部２２を設け、このチップ溝部２２の深さ寸法ｔ３を、外周溝部２１の深さ寸法ｔ２と同じにしたので、外周溝部２１の底部からチップ部１８の外周（チップ溝部２２）にかけての連なり部分２３は、段差の形状をなさず、回転子３の回転によって永久磁石１４による遠心力を受けても、この連なり部分２３に応力が集中し難くなる。 A tip groove portion 22 that is connected to the outer peripheral groove portion 21 and that forms the outer periphery of the tip portion 18 is provided on the outer peripheral portion of the rotor core 11, and the depth dimension t 3 of the tip groove portion 22 is set to the depth of the outer peripheral groove portion 21. Since the dimension t 2 is the same as the dimension t 2 , the continuous portion 23 from the bottom of the outer peripheral groove 21 to the outer periphery of the tip portion 18 (chip groove portion 22) does not form a step, and the rotation by the rotor 3 causes centrifugal separation by the permanent magnet 14. Even if a force is received, it is difficult for stress to concentrate on the continuous portion 23.

次に、本発明の第２の実施形態の回転子を、図３を参照して説明する。尚、上記第１の実施形態と同様な一部分には同符号を付し、その詳細な説明は省略する。
図３には、本発明の第２の実施形態の回転子を構成する回転子鉄心３１の一部が示されている。外径寸法がＤである回転子鉄心３１の外周部に第１の実施形態と同様の、チップ部３２、外周溝部３３及びチップ溝部３４が形成されている。ここで、チップ溝部３４の深さ寸法ｔ４は、外周溝部３３の深さ寸法ｔ２よりも小さく設定されている。又、外周溝部３３は、回転子鉄心３１の中心を挟んで対称の位置にある。即ち、回転子鉄心３１のチップ溝部３４の底部の外径寸法（Ｄ−２×ｔ４）は、外周溝部３３の底部の外径寸法（Ｄ−２×ｔ２）より大に設定されている。尚、チップ部３２の厚さ寸法ｔ１及び外周溝部３３の深さ寸法ｔ２は第１の実施形態と同じ寸法であり、磁石挿入孔部１３の位置は、第１の実施形態の位置よりもｔ３−ｔ４の長さ分だけ、外周側に位置している。 Next, a rotor according to a second embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same part as the said 1st Embodiment, and the detailed description is abbreviate | omitted.
FIG. 3 shows a part of the rotor core 31 constituting the rotor according to the second embodiment of the present invention. Similar to the first embodiment, the tip portion 32, the outer peripheral groove portion 33, and the tip groove portion 34 are formed on the outer peripheral portion of the rotor core 31 whose outer diameter dimension is D. Here, the depth dimension t 4 of the chip groove part 34 is set smaller than the depth dimension t 2 of the outer peripheral groove part 33. Further, the outer circumferential groove portion 33 is in a symmetrical position across the center of the rotor core 31. That is, the outer diameter dimension (D-2 × t 4 ) of the bottom portion of the tip groove portion 34 of the rotor core 31 is set larger than the outer diameter size (D-2 × t 2 ) of the bottom portion of the outer circumferential groove portion 33. . The depth dimension t 2 of the thickness t 1 and the outer peripheral groove 33 of the tip section 32 is the same size as the first embodiment, the position of the magnet insertion holes 13, the position of the first embodiment Is also located on the outer peripheral side by the length of t 3 -t 4 .

この構成により、外周溝部３３からチップ溝部３４にかけての連なり部分３５は、従来の連なり部分１０９（図６参照）よりも小さい段差の形状になる。従って、回転子鉄心３１の外周部の連なり部分３５にかかる応力の集中を、従来の回転子鉄心１０１の外周部の連なり部分１０９にかかる応力の集中よりも、低減することができる。   With this configuration, the continuous portion 35 from the outer peripheral groove portion 33 to the chip groove portion 34 has a stepped shape smaller than that of the conventional continuous portion 109 (see FIG. 6). Therefore, the stress concentration applied to the continuous portion 35 of the outer peripheral portion of the rotor core 31 can be reduced as compared with the stress concentration applied to the continuous portion 109 of the outer peripheral portion of the conventional rotor core 101.

次に、本発明の第３の実施形態の回転子を、図４を参照して説明する。尚、上記第１及び第２の実施形態と同様な一部分には同符号を付し、その詳細な説明は省略する。
図４には、本発明の第３の実施形態の回転子を構成する回転子鉄心４１の一部が示されている。外径寸法がＤである回転子鉄心４１の外周部には、第１の実施形態と同様に、チップ部４２、外周溝部４３及びチップ溝部４４が形成されている。ここで、チップ溝部４４の深さ寸法ｔ５は、外周溝部４３の深さ寸法ｔ２よりも大きく設定されている。又、外周溝部４３は、回転子鉄心４１の中心を挟んで対称の位置にある。即ち、チップ溝部４４の底部の外径寸法（Ｄ−２×ｔ５）は、外周溝部４３の底部の外径寸法（Ｄ−２×ｔ２）より小に設定されている。尚、チップ部４２の厚さ寸法ｔ１及び外周溝部４３の深さ寸法ｔ２は第１の実施形態と同じ寸法であり、磁石挿入孔部１３の位置は、第１の実施形態の位置よりもｔ５−ｔ３の長さ分だけ、内周側に位置している。 Next, a rotor according to a third embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the part similar to the said 1st and 2nd embodiment, and the detailed description is abbreviate | omitted.
FIG. 4 shows a part of a rotor core 41 constituting the rotor of the third embodiment of the present invention. As in the first embodiment, a tip portion 42, an outer peripheral groove portion 43, and a tip groove portion 44 are formed on the outer peripheral portion of the rotor core 41 whose outer diameter dimension is D. Here, the depth dimension t 5 of the chip groove portion 44 is set to be larger than the depth dimension t 2 of the outer peripheral groove portion 43. Further, the outer circumferential groove 43 is in a symmetrical position with the center of the rotor core 41 interposed therebetween. That is, the outer diameter dimension (D-2 × t 5 ) of the bottom portion of the chip groove portion 44 is set to be smaller than the outer diameter dimension (D-2 × t 2 ) of the bottom portion of the outer peripheral groove portion 43. The depth dimension t 2 of the thickness t 1 and the outer circumferential groove 43 of the tip section 42 is the same size as the first embodiment, the position of the magnet insertion holes 13, the position of the first embodiment Is also located on the inner circumference side by the length of t 5 -t 3 .

第３の実施形態の回転子においても、外周溝部４３からチップ溝部４４にかけての連なり部分４５は、従来の連なり部分１０９よりも小さい段差となり、第２の実施形態の回転子と同様の作用効果を奏する。   Also in the rotor of the third embodiment, the continuous portion 45 from the outer peripheral groove portion 43 to the tip groove portion 44 has a step smaller than that of the conventional continuous portion 109, and has the same effect as the rotor of the second embodiment. Play.

次に、本発明の第４の実施形態の回転子を、図５を参照して説明する。尚、上記第１の実施形態と同様な一部分には同符号を付し、その詳細な説明は省略する。
第４の実施形態は、回転子の外径寸法がＤである回転子鉄心５１の外周部に設けられる磁石挿入孔部５２及び永久磁石５３の形状及び配置が、上記第１の実施形態と異なる。即ち、本実施形態の磁石挿入孔部５２は、回転子鉄心５１のｄ軸に対応する箇所、本実施形態では８箇所に形成されている。この磁石挿入孔部５２には、永久磁石５３が挿入固定されている。この場合、永久磁石５３の長尺方向の辺の一方が回転子鉄心５１の外周と近接するように対向配置され、永久磁石５３の長尺方向の辺の中心がｄ軸と一致して配置されている。又、永久磁石５３の両端面５３ａ，５３ａの延長線と回転子鉄心５１の外周の交点部分が電気角φ２になるように、永久磁石５３の大きさが設定されている。尚、図示はしないが、ｄ軸と周方向に隣合うｄ軸との間にあって、固定子鉄心４側で生じた磁束の通り易い部分をｑ軸とする。 Next, a rotor according to a fourth embodiment of the present invention will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same part as the said 1st Embodiment, and the detailed description is abbreviate | omitted.
The fourth embodiment is different from the first embodiment in the shape and arrangement of the magnet insertion hole 52 and the permanent magnet 53 provided in the outer periphery of the rotor core 51 whose outer diameter dimension is D. . That is, the magnet insertion hole 52 of the present embodiment is formed at a location corresponding to the d-axis of the rotor core 51, that is, 8 locations in the present embodiment. A permanent magnet 53 is inserted and fixed in the magnet insertion hole 52. In this case, one side of the long side of the permanent magnet 53 is disposed so as to be close to the outer periphery of the rotor core 51, and the center of the long side of the permanent magnet 53 is disposed so as to coincide with the d axis. ing. Also, as both end faces 53a, 53a extended line and the peripheral intersections of the rotor core 51 of the permanent magnet 53 is an electrical angle phi 2, the size of the permanent magnet 53 is set. Although not shown, a portion between the d-axis and the d-axis that is adjacent in the circumferential direction and through which the magnetic flux generated on the stator core 4 side easily passes is defined as the q-axis.

この磁石挿入孔部５２に永久磁石５３が挿入固定されると、永久磁石５３の両端部に逃げ孔部５４，５４が形成され、回転子鉄心５１の外周部において、逃げ孔部５４と回転子鉄心５２の外周との間にチップ部５５が必然的に形成される。又、回転子鉄心５１の外周部には、電気角φ１を存する位置から電気角φ２までの範囲の底部を有する外周溝部５６が形成され、この外周溝部５６に連なるようにチップ部５５の外周にチップ溝部５７が形成されている。これにより、外周溝部５６からチップ溝部５７にかけての連なり部分５８には、段差が形状されなくなる。尚、チップ部５５の厚さ寸法ｔ１、外周溝部５６の深さ寸法ｔ２及びチップ溝部５７の深さ寸法ｔ３は、第１の実施形態と同じである。 When the permanent magnet 53 is inserted and fixed in the magnet insertion hole 52, escape holes 54 and 54 are formed at both ends of the permanent magnet 53, and the escape hole 54 and the rotor are formed on the outer periphery of the rotor core 51. A tip portion 55 is inevitably formed between the outer periphery of the iron core 52. In addition, an outer peripheral groove portion 56 having a bottom portion in a range from the position where the electrical angle φ 1 exists to the electrical angle φ 2 is formed on the outer peripheral portion of the rotor core 51, and the tip portion 55 is connected to the outer peripheral groove portion 56. A chip groove 57 is formed on the outer periphery. As a result, no step is formed in the continuous portion 58 from the outer peripheral groove portion 56 to the chip groove portion 57. The thickness dimension t 1 of the chip part 55, the depth dimension t 2 of the outer peripheral groove part 56, and the depth dimension t 3 of the chip groove part 57 are the same as in the first embodiment.

上記構成の回転子（回転子鉄心５１）には、上述したように、永久磁石５３の長尺方向の辺の中心を通ようにｄ軸が形成され、又、周方向に隣合うｄ軸間にｑ軸が形成される（所謂磁気的凹凸が形成される）ので、第１の実施形態と同様に、トルクが発生する。又、回転子鉄心５１には、永久磁石５３が設けられているので、永久磁石５３と固定子２（図２参照）の磁極との間の磁気吸引力及び磁気反発力によってもトルクは発生する。
又、外周溝部５６に連なるようにチップ溝部５７を形成したので、第４の実施形態の回転子においても、第１の実施形態の回転子と同様の効果を奏する。 As described above, the rotor (rotor core 51) having the above-described configuration is formed with the d-axis passing through the center of the long side of the permanent magnet 53, and between the d-axes adjacent in the circumferential direction. Since the q axis is formed (so-called magnetic unevenness is formed), torque is generated as in the first embodiment. Further, since the rotor core 51 is provided with the permanent magnet 53, torque is also generated by the magnetic attractive force and the magnetic repulsive force between the permanent magnet 53 and the magnetic pole of the stator 2 (see FIG. 2). .
Further, since the chip groove portion 57 is formed so as to be continuous with the outer peripheral groove portion 56, the rotor of the fourth embodiment has the same effect as the rotor of the first embodiment.

尚、本発明は上記し且つ図面に示す実施形態に限定されず、次のような変形、拡張が可能である。
第４の実施形態の回転電機の回転子のチップ溝部の外径寸法を、第２の実施形態のチップ溝部の深さ寸法と同様にして、外周溝部の底部の外径寸法より大に設定しても良い。或いは、第３の実施形態のチップ溝部の深さ寸法と同様にして、外周溝部の底部の外径寸法より小に設定しても良い。
又、本発明の回転電機の回転子及び回転電機は、三相コイルに適用して説明したが、三相コイル以外の複数相のコイルにも適用できる。更に、上記した構成部品の寸法等についても、適宜変更することができる。 The present invention is not limited to the embodiment described above and shown in the drawings, and the following modifications and expansions are possible.
The outer diameter dimension of the tip groove portion of the rotor of the rotating electrical machine of the fourth embodiment is set larger than the outer diameter dimension of the bottom portion of the outer peripheral groove portion in the same manner as the depth dimension of the chip groove portion of the second embodiment. May be. Alternatively, it may be set smaller than the outer diameter dimension of the bottom part of the outer peripheral groove part in the same manner as the depth dimension of the chip groove part of the third embodiment.
In addition, the rotor and the rotating electrical machine of the rotating electrical machine of the present invention have been described as applied to a three-phase coil, but can be applied to a plurality of coils other than the three-phase coil. Furthermore, the dimensions and the like of the component parts described above can be changed as appropriate.

本発明の第１の実施形態を示す回転子の回転子鉄心の拡大図The enlarged view of the rotor core of the rotor which shows the 1st Embodiment of this invention 回転電機の全体構成を概略的に示す側面図Side view schematically showing the overall configuration of the rotating electrical machine 本発明の第２の実施形態を示す図１相当図FIG. 1 equivalent diagram showing a second embodiment of the present invention 本発明の第３の実施形態を示す図１相当図FIG. 1 equivalent view showing a third embodiment of the present invention 本発明の第４の実施形態を示す図１相当図FIG. 1 equivalent view showing a fourth embodiment of the present invention 従来の回転子の回転子鉄心を示す図１相当図1 equivalent view showing a rotor core of a conventional rotor

符号の説明Explanation of symbols

図面中、１は回転電機、３は回転子、４は固定子鉄心、５はＵ相コイル、６はＶ相コイル、７はＷ相コイル、１１，３１，４１，５１は回転子鉄心、１３，５２は磁石挿入孔部、１４，５３は永久磁石、１５，１６，５４は逃げ孔部、１８，３２，４２，５５はチップ部、２１，３３，４３，５６は外周溝部、２２，３４，４４，５７はチップ溝部を示す。   In the drawings, 1 is a rotating electrical machine, 3 is a rotor, 4 is a stator core, 5 is a U-phase coil, 6 is a V-phase coil, 7 is a W-phase coil, 11, 31, 41, and 51 are rotor cores, 13 , 52 are magnet insertion holes, 14, 53 are permanent magnets, 15, 16, 54 are escape holes, 18, 32, 42, 55 are tip parts, 21, 33, 43, 56 are outer circumferential groove parts, 22, 34 , 44 and 57 indicate chip groove portions.

Claims (4)

回転子鉄心と、
この回転子鉄心の外周部に周方向に一定の間隔を存して設けられた複数の磁石挿入孔部と、
これらの磁石挿入孔部に夫々挿入固定された磁極形成用の永久磁石と、
前記磁石挿入孔部の端部に前記回転子鉄心の外周との間にチップ部を形成するように設けられ、前記永久磁石の端部の磁束漏洩を制限するための逃げ孔部と、
前記回転子鉄心の外周部に設けられ、前記磁極の中心に対して所定の角度を存する位置からチップ部近傍の位置までの所定の範囲を有する外周溝部と、
前記回転子鉄心の外周部に前記外周溝部に連なるように設けられ、前記チップ部の外周をなすチップ溝部とを具備してなる回転電機の回転子。 The rotor core,
A plurality of magnet insertion holes provided at a constant interval in the circumferential direction on the outer periphery of the rotor core;
Permanent magnets for magnetic pole formation inserted and fixed in these magnet insertion holes, respectively,
Provided to form a tip portion between the end of the magnet insertion hole and the outer periphery of the rotor core, a relief hole for limiting magnetic flux leakage at the end of the permanent magnet,
An outer peripheral groove portion provided on an outer peripheral portion of the rotor core and having a predetermined range from a position having a predetermined angle with respect to a center of the magnetic pole to a position in the vicinity of the tip portion;
A rotor of a rotating electrical machine comprising a tip groove portion provided on an outer peripheral portion of the rotor core so as to be continuous with the outer peripheral groove portion and forming an outer periphery of the tip portion. チップ溝部の底部の外径寸法は、外周溝部の底部の外径寸法より大に設定されていることを特徴とする請求項１に記載の回転電機の回転子。   2. The rotor of a rotating electrical machine according to claim 1, wherein an outer diameter of the bottom of the chip groove is set larger than an outer diameter of the bottom of the outer peripheral groove. チップ溝部の底部の外径寸法は、外周溝部の底部の外径寸法より小に設定されていることを特徴とする請求項１に記載の回転電機の回転子。   2. The rotor of a rotating electrical machine according to claim 1, wherein the outer diameter dimension of the bottom part of the chip groove part is set smaller than the outer diameter dimension of the bottom part of the outer peripheral groove part. 固定子鉄心と、
この固定子鉄心に着装されたコイルと、
請求項１ないし３のいずれかに記載の回転子とを具備したことを特徴とする回転電機。 A stator core,
A coil mounted on the stator core;
A rotating electrical machine comprising the rotor according to claim 1.
JP2007115609A 2007-04-25 2007-04-25 Rotating electric machine rotor and rotating electric machine Active JP5159153B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007115609A JP5159153B2 (en) 2007-04-25 2007-04-25 Rotating electric machine rotor and rotating electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007115609A JP5159153B2 (en) 2007-04-25 2007-04-25 Rotating electric machine rotor and rotating electric machine

Publications (2)

Publication Number Publication Date
JP2008278553A true JP2008278553A (en) 2008-11-13
JP5159153B2 JP5159153B2 (en) 2013-03-06

Family

ID=40055873

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007115609A Active JP5159153B2 (en) 2007-04-25 2007-04-25 Rotating electric machine rotor and rotating electric machine

Country Status (1)

Country Link
JP (1) JP5159153B2 (en)

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011122111A1 (en) * 2010-03-30 2011-10-06 アイシン・エィ・ダブリュ株式会社 Dynamo electric machine
CN102457114A (en) * 2010-11-02 2012-05-16 株式会社安川电机 Rotary electric machine
CN103107620A (en) * 2011-11-14 2013-05-15 发那科株式会社 Rotor of permanent magnet synchronous motor, motor and machine tool
JP2013128405A (en) * 2011-11-14 2013-06-27 Fanuc Ltd Rotor of permanent magnet synchronous motor, motor and machine tool
CN103715797A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotary motor
CN103715799A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM electric rotating machine
CN103715800A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotating electromotor
CN103715798A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotary motor
JP2014082852A (en) * 2012-10-16 2014-05-08 Suzuki Motor Corp Ipm type electric rotary machine
JP2014090550A (en) * 2012-10-29 2014-05-15 Suzuki Motor Corp Ipm electric rotary machine
JP2014108025A (en) * 2012-11-29 2014-06-09 Suzuki Motor Corp Ipm type electric rotary machine
WO2019081427A1 (en) * 2017-10-26 2019-05-02 Compact Dynamics Gmbh Electric machine with elevated power density
JP2019165593A (en) * 2018-03-20 2019-09-26 株式会社東芝 Rotary electric machine
CN112968580A (en) * 2021-02-03 2021-06-15 大连理工大学 Rotor structure of built-in permanent magnet synchronous motor and design method

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103986261B (en) * 2014-04-10 2016-06-08 西北工业大学 A kind of method improving PMSM Air Gap Flux waveform

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002084693A (en) * 2000-07-07 2002-03-22 Koyo Seiko Co Ltd Brushless dc motor
JP2003284275A (en) * 2002-03-26 2003-10-03 Aichi Elec Co Permanent magnet dynamo-electric motor
JP2004328956A (en) * 2003-04-28 2004-11-18 Toyota Motor Corp Motor
JP2005124281A (en) * 2003-10-15 2005-05-12 Aichi Elec Co Permanent magnet embedded type motor
JP2005261024A (en) * 2004-03-10 2005-09-22 Hitachi Ltd Permanent magnet rotating electric machine and electric vehicle using it

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002084693A (en) * 2000-07-07 2002-03-22 Koyo Seiko Co Ltd Brushless dc motor
JP2003284275A (en) * 2002-03-26 2003-10-03 Aichi Elec Co Permanent magnet dynamo-electric motor
JP2004328956A (en) * 2003-04-28 2004-11-18 Toyota Motor Corp Motor
JP2005124281A (en) * 2003-10-15 2005-05-12 Aichi Elec Co Permanent magnet embedded type motor
JP2005261024A (en) * 2004-03-10 2005-09-22 Hitachi Ltd Permanent magnet rotating electric machine and electric vehicle using it

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011122111A1 (en) * 2010-03-30 2011-10-06 アイシン・エィ・ダブリュ株式会社 Dynamo electric machine
JP2011211860A (en) * 2010-03-30 2011-10-20 Aisin Aw Co Ltd Rotary electric machine
CN102782990A (en) * 2010-03-30 2012-11-14 爱信艾达株式会社 Dynamo electric machine
US8618709B2 (en) 2010-03-30 2013-12-31 Aisin Aw Co., Ltd. Rotary electric machine with improved energy efficiency
CN102782990B (en) * 2010-03-30 2014-12-10 爱信艾达株式会社 Rotating electrical machine
CN102457114A (en) * 2010-11-02 2012-05-16 株式会社安川电机 Rotary electric machine
JP2012100428A (en) * 2010-11-02 2012-05-24 Yaskawa Electric Corp Rotary electric machine
US8680732B2 (en) 2010-11-02 2014-03-25 Kabushiki Kaisha Yaskawa Denki Rotary electric machine
CN103107620A (en) * 2011-11-14 2013-05-15 发那科株式会社 Rotor of permanent magnet synchronous motor, motor and machine tool
JP2013128405A (en) * 2011-11-14 2013-06-27 Fanuc Ltd Rotor of permanent magnet synchronous motor, motor and machine tool
US9065314B2 (en) 2011-11-14 2015-06-23 Fanuc Corporation Rotor of buried magnet-type electric motor, motor and machine tool having the rotor
CN103715798A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotary motor
CN103715797B (en) * 2012-09-28 2016-04-06 铃木株式会社 IPM rotary motor
CN103715800A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotating electromotor
CN103715799A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM electric rotating machine
CN103715797A (en) * 2012-09-28 2014-04-09 铃木株式会社 IPM rotary motor
CN103715798B (en) * 2012-09-28 2016-04-06 铃木株式会社 IPM rotary motor
JP2014082852A (en) * 2012-10-16 2014-05-08 Suzuki Motor Corp Ipm type electric rotary machine
JP2014090550A (en) * 2012-10-29 2014-05-15 Suzuki Motor Corp Ipm electric rotary machine
JP2014108025A (en) * 2012-11-29 2014-06-09 Suzuki Motor Corp Ipm type electric rotary machine
WO2019081427A1 (en) * 2017-10-26 2019-05-02 Compact Dynamics Gmbh Electric machine with elevated power density
JP2019165593A (en) * 2018-03-20 2019-09-26 株式会社東芝 Rotary electric machine
WO2019181001A1 (en) * 2018-03-20 2019-09-26 株式会社 東芝 Rotary electric machine
CN111492561A (en) * 2018-03-20 2020-08-04 株式会社东芝 Rotating electrical machine
CN111492561B (en) * 2018-03-20 2022-06-14 株式会社东芝 Rotating electrical machine
JP7166066B2 (en) 2018-03-20 2022-11-07 株式会社東芝 Rotating electric machine
CN112968580A (en) * 2021-02-03 2021-06-15 大连理工大学 Rotor structure of built-in permanent magnet synchronous motor and design method

Also Published As

Publication number Publication date
JP5159153B2 (en) 2013-03-06

Similar Documents

Publication Publication Date Title
JP5159153B2 (en) Rotating electric machine rotor and rotating electric machine
JP5288724B2 (en) Rotating electric machine rotor and rotating electric machine
JP6508168B2 (en) Electric rotating machine
JP4886624B2 (en) Permanent magnet type rotating electrical machine and permanent magnet type rotating electrical machine system
US8217547B2 (en) Rotating electric machine
EP2887503B1 (en) Rotor for use in magnet-assisted reluctance motor, and brushless motor
US9419481B2 (en) Rotary electric machine
JP5774081B2 (en) Rotating electric machine
JP4654756B2 (en) AC motor
WO2011001533A1 (en) Permanent magnetic rotating electric machine
JP2005176424A (en) Rotor for dynamo-electric machine
JP5353962B2 (en) Permanent magnet type motor
JP6048191B2 (en) Multi-gap rotating electric machine
JP2015204715A (en) Rotor for rotary electric machine
JP2007267565A (en) Coreless motor
JP2014075892A (en) Rotor of rotary electric machine
JP5248048B2 (en) Rotating electric machine rotor and rotating electric machine
JP2009077525A (en) Rotor for dynamo-electric machine and dynamo-electric machine
JP2005323498A (en) Permanent magnet type dynamo-electric machine
JP2008283806A (en) Buried-magnet motor
JP2015050803A (en) Rotary electric machine
JP6357859B2 (en) Permanent magnet embedded rotary electric machine
JP2009106001A (en) Rotary electric machine
JP4491211B2 (en) Permanent magnet rotating electric machine
JP2018125993A (en) Rotary electric machine

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100222

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20120124

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20120131

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120328

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20121113

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20121211

R150 Certificate of patent or registration of utility model

Ref document number: 5159153

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20151221

Year of fee payment: 3

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S111 Request for change of ownership or part of ownership

Free format text: JAPANESE INTERMEDIATE CODE: R313115

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350