JP5470851B2 - 径方向空隙型磁石モータ - Google Patents
径方向空隙型磁石モータ Download PDFInfo
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- JP5470851B2 JP5470851B2 JP2008546942A JP2008546942A JP5470851B2 JP 5470851 B2 JP5470851 B2 JP 5470851B2 JP 2008546942 A JP2008546942 A JP 2008546942A JP 2008546942 A JP2008546942 A JP 2008546942A JP 5470851 B2 JP5470851 B2 JP 5470851B2
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- Prior art keywords
- magnetic pole
- magnetic
- magnet motor
- angle
- radial gap
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/278—Surface mounted magnets; Inset magnets
- H02K1/2781—Magnets shaped to vary the mechanical air gap between the magnets and the stator
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/03—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies having permanent magnets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/057—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B
- H01F1/0571—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes
- H01F1/0575—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together
- H01F1/0578—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and IIIa elements, e.g. Nd2Fe14B in the form of particles, e.g. rapid quenched powders or ribbon flakes pressed, sintered or bonded together bonded together
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F1/00—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties
- H01F1/01—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials
- H01F1/03—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity
- H01F1/032—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials
- H01F1/04—Magnets or magnetic bodies characterised by the magnetic materials therefor; Selection of materials for their magnetic properties of inorganic materials characterised by their coercivity of hard-magnetic materials metals or alloys
- H01F1/047—Alloys characterised by their composition
- H01F1/053—Alloys characterised by their composition containing rare earth metals
- H01F1/055—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5
- H01F1/059—Alloys characterised by their composition containing rare earth metals and magnetic transition metals, e.g. SmCo5 and Va elements, e.g. Sm2Fe17N2
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/06—Magnetic cores, or permanent magnets characterised by their skew
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Hard Magnetic Materials (AREA)
Description
J.Schulze著「Application of high performance magnets for small motors」、Proc. of the18th international workshop on high performance magnets and their applications、2004年、pp.908−915 Y.Pang、Z.Q.Zhu、S.Ruangsinchaiwanich、D.Howe著、「"Comparison of brushless motors having halbach magnetized magnets and shaped parallel magnetized magnets」、Proc. of the18th international workshop on high performance magnets and their applications、2004年、pp.400−407 W.Rodewald、W.Rodewald、M.Katter著、「Properties and applications of high performance magnets」、Proc. of the18th international workshop on high performance magnets and their applications、2004年、pp.52−63 松岡篤,山崎東吾,川口仁著、「送風機用ブラシレスDCモータの高性能化検討」、電気学会回転機研究会、RM−01−161、2001年 D.Howe、Z.Q.Zhu著、「Application of halbach cylinders to electrical machine」、Proc. of the 17th int. workshop on rare earth magnets and their applications、2000年、pp.903−922 入山恭彦著、「高性能希土類ボンド磁石の開発動向」、文部科学省イノベーション創出事業/希土類資源の有効利用と先端材料シンポジウム、2002年、pp.19−26 B.H.Rabin、B.M.Ma著、「Recent developments in Nd−Fe−B powder」、120th Topical Symposium of the Magnetic Society of Japan、2001年、pp.23−28 B.M.Ma著、「Recent powder development at magnequench」、Polymer Bonded Magnets 2002、2002年 S.Hirasawa、H.Kanekiyo、T.Miyoshi、K.Murakami、Y.Shigemoto、T.Nishiuchi著、「Structure and magnetic properties of Nd2Fe14B/FexB−type nanocomposite permanent magnets prepared by strip casting」、9th Joint MMM/INTERMAG、FG−05、2004年 H.A.Davies、J.I.Betancourt、C.L.Harland、「Nanophase Pr and Nd/Pr based rare−earth−iron− boron alloys」、Proc. of 16th Int. Workshop on Rare−Earth Magnets and Their Applications、2000年、pp.485−495
以下、本発明にかかる磁気異方性磁極、並びに8極12スロットの径方向空隙型磁石モータを対象とした実施例により、更に詳しく説明する。ただし、本発明が本実施例に限定されるものではない。
φp 磁極の機械角
Ms 静磁界
M 磁化ベクトル
Mθ 磁化ベクトルの角度
Hex 外部磁界
Hθ 外部磁界の角度
Claims (10)
- 複数の磁極を有するロータを備え、
前記複数の磁極は、予め均質な外部磁界で磁化された異形磁極を変形することで得られた円弧状磁極であって、所定の機械角を有し、
前記円弧状磁極内で磁化ベクトルの方向は周方向に連続的に変化しており、
前記円弧状磁極の周方向磁極中心領域において、前記磁極の周方向接線に対する磁化ベクトルの角度は75〜90度であり、
前記円弧状磁極の両端部を始点とする前記所定の機械角の1/10の角度範囲の領域において、
(前記所定の機械角の1/10に相当する角度)に対する(前記磁極の周方向接線に対する磁化ベクトルの角度)の比率が7以下であることを特徴とする、
径方向空隙型磁石モータ。 - 周方向磁極中心領域で前記磁化ベクトルの角度を90度とし、その平均誤差を5度以下とした、請求項1記載の径方向空隙型磁石モータ。
- 前記所定の機械角の1/10に相当する角度の領域において、前記機械角と前記磁化ベクトルとが相関係数0.99以上の直線近似が成り立つ精度をもつ、請求項1記載の径方向空隙型磁石モータ。
- 前記変形が熱と外力によって生じる溶融した線状高分子のせん断流動、伸張流動、およびそれらが重複した粘性変形である、請求項1記載の径方向空隙型磁石モータ。
- 変形過程の異方性分散の変化が0.5以下である、請求項1記載の径方向空隙型磁石モータ。
- 磁気異方性磁極が、残留磁化Mr≧0.95T、固有保磁力HcJ≧0.9MA/m、エネルギー密度(BH)maxが150kJ/m3以上の磁気性能を有する、請求項1に記載の径方向空隙型磁石モータ。
- 磁気異方性磁極が150μm以下のNd2Fe14B系希土類磁石粒子を平均粒子径3〜5μmのSm2Fe17N3系希土類磁石微粉末と結合剤とのマトリクス(連続相)で隔離したマクロ構造である、請求項1記載の径方向空隙型磁石モータ。
- 前記磁気異方性磁極に占めるエネルギー密度(BH)maxが270kJ/m3以上の磁石材料の体積分率を80vol.%以上とし、着磁界Hmを2.4MA/m以上とする、請求項1または6のいずれか1項記載の径方向空隙型磁石モータ。
- 極数が8極である請求項1記載の径方向空隙型磁石モータ。
- 前記周方向磁極中心領域が、前記円弧状磁極の中央の機械角14度以内の領域である請求項2記載の径方向空隙型磁石モータ。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008546942A JP5470851B2 (ja) | 2006-11-27 | 2007-11-15 | 径方向空隙型磁石モータ |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006318254 | 2006-11-27 | ||
JP2006318254 | 2006-11-27 | ||
PCT/JP2007/072174 WO2008065898A1 (fr) | 2006-11-27 | 2007-11-15 | Moteur à aimant de type à espace dans la direction radiale |
JP2008546942A JP5470851B2 (ja) | 2006-11-27 | 2007-11-15 | 径方向空隙型磁石モータ |
Publications (2)
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JPWO2008065898A1 JPWO2008065898A1 (ja) | 2010-03-04 |
JP5470851B2 true JP5470851B2 (ja) | 2014-04-16 |
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JP2008546942A Active JP5470851B2 (ja) | 2006-11-27 | 2007-11-15 | 径方向空隙型磁石モータ |
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US (1) | US8044547B2 (ja) |
JP (1) | JP5470851B2 (ja) |
WO (1) | WO2008065898A1 (ja) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
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CN103984864B (zh) * | 2014-05-16 | 2017-09-05 | 天津大学 | 一种含有不等厚磁极的表贴式永磁电机磁场优化方法 |
JP6706487B2 (ja) * | 2015-11-19 | 2020-06-10 | 日東電工株式会社 | 希土類永久磁石をもった回転子を備える回転電機 |
DE102017104076A1 (de) | 2016-02-26 | 2017-08-31 | Kongsberg Automotive Inc. | Gebläseeinheit für einen Fahrzeugsitz |
CN106683816B (zh) * | 2017-03-08 | 2018-06-01 | 江苏北方永磁科技有限公司 | 一种永磁复合材料及制备方法 |
FR3134929A1 (fr) * | 2022-04-25 | 2023-10-27 | Valeo Equipements Electriques Moteur | Rotor pour machine électrique tournante, machine électrique tournante et procédé de fabrication d’un rotor |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002191144A (ja) * | 2000-12-21 | 2002-07-05 | Matsushita Electric Ind Co Ltd | 永久磁石ロータ及びその製造方法 |
JP2006080115A (ja) * | 2004-09-07 | 2006-03-23 | Matsushita Electric Ind Co Ltd | 異方性希土類−鉄系ボンド磁石 |
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JPS59194124A (ja) * | 1983-04-15 | 1984-11-02 | Hitachi Ltd | スラスト軸受 |
JP2002262533A (ja) | 2001-02-28 | 2002-09-13 | Hitachi Ltd | 永久磁石式回転電機 |
JP4791013B2 (ja) * | 2004-07-22 | 2011-10-12 | 三菱電機株式会社 | ブラシレスモータ |
US7228616B2 (en) * | 2005-03-31 | 2007-06-12 | General Electric Company | System and method for magnetization of permanent magnet rotors in electrical machines |
JP2007181305A (ja) * | 2005-12-28 | 2007-07-12 | Hitachi Ltd | 永久磁石式同期電動機及びこれを用いた圧縮機 |
CN101401282B (zh) * | 2006-03-16 | 2011-11-30 | 松下电器产业株式会社 | 径向各向异性磁铁的制造方法和使用径向各向异性磁铁的永磁电动机及有铁芯永磁电动机 |
JP4068653B2 (ja) * | 2006-05-31 | 2008-03-26 | 山洋電気株式会社 | モータ用回転子 |
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2007
- 2007-11-15 WO PCT/JP2007/072174 patent/WO2008065898A1/ja active Application Filing
- 2007-11-15 US US12/312,792 patent/US8044547B2/en active Active
- 2007-11-15 JP JP2008546942A patent/JP5470851B2/ja active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2002191144A (ja) * | 2000-12-21 | 2002-07-05 | Matsushita Electric Ind Co Ltd | 永久磁石ロータ及びその製造方法 |
JP2006080115A (ja) * | 2004-09-07 | 2006-03-23 | Matsushita Electric Ind Co Ltd | 異方性希土類−鉄系ボンド磁石 |
Also Published As
Publication number | Publication date |
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US20100066192A1 (en) | 2010-03-18 |
JPWO2008065898A1 (ja) | 2010-03-04 |
WO2008065898A1 (fr) | 2008-06-05 |
US8044547B2 (en) | 2011-10-25 |
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