CN114731075A - 电机转子和电机 - Google Patents

电机转子和电机 Download PDF

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Publication number
CN114731075A
CN114731075A CN202080079869.3A CN202080079869A CN114731075A CN 114731075 A CN114731075 A CN 114731075A CN 202080079869 A CN202080079869 A CN 202080079869A CN 114731075 A CN114731075 A CN 114731075A
Authority
CN
China
Prior art keywords
permanent magnet
coercivity
rotor
segment
electric machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202080079869.3A
Other languages
English (en)
Inventor
赖彬
兰华
李孟德
王子京
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.)
Huawei Digital Power Technologies Co Ltd
Original Assignee
Huawei Digital Power Technologies Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Huawei Digital Power Technologies Co Ltd filed Critical Huawei Digital Power Technologies Co Ltd
Publication of CN114731075A publication Critical patent/CN114731075A/zh
Pending legal-status Critical Current

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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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H02K1/2766—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM] having a flux concentration effect
    • 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
    • H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/02—Details of the magnetic circuit characterised by the magnetic material
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
    • H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
    • H02K21/14—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating within the armatures
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0273—Imparting anisotropy
    • H01F41/028—Radial anisotropy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
    • H01F41/0293—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets diffusion of rare earth elements, e.g. Tb, Dy or Ho, into permanent magnets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

本申请提供一种电机转子，包括转子铁芯和设置在所述转子铁芯上的多个永磁体，至少部分所述永磁体沿垂直于磁化方向的至少一个方向，矫顽力由中间向两端呈连续渐变分布或呈多级梯度渐变分布。该电机转子采用矫顽力渐变设计的永磁体，永磁体由中间到两端矫顽力呈连续渐变或多级梯度渐变，整个永磁体的矫顽力变化较均匀，能最大程度提升电机的稳定可靠性，同时可避免抗退磁性能过剩，减少重稀土元素的用量，最大限度降低电机成本。本申请实施例还提供了采用该电机转子的电机，兼具高可靠性和低成本。

Description

PCT国内申请，说明书已公开。

Claims (30)

  1. PCT国内申请，权利要求书已公开。
CN202080079869.3A 2020-07-23 2020-07-23 电机转子和电机 Pending CN114731075A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/103671 WO2022016437A1 (zh) 2020-07-23 2020-07-23 电机转子和电机

Publications (1)

Publication Number Publication Date
CN114731075A true CN114731075A (zh) 2022-07-08

Family

ID=79728464

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202080079869.3A Pending CN114731075A (zh) 2020-07-23 2020-07-23 电机转子和电机

Country Status (4)

Country Link
US (1) US20230163647A1 (zh)
EP (1) EP4178081A4 (zh)
CN (1) CN114731075A (zh)
WO (1) WO2022016437A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024098900A1 (zh) * 2022-11-10 2024-05-16 广东美芝制冷设备有限公司 一种可以提高抗退磁性的电机、压缩机和制冷机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114759703A (zh) * 2022-04-28 2022-07-15 安徽美芝精密制造有限公司 转子组件、永磁电机和压缩机

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1287503C (zh) * 2002-03-20 2006-11-29 大金工业株式会社 永久磁铁型电动机及使用该电动机的压缩机
US8421292B2 (en) * 2007-03-27 2013-04-16 Hitachi Metals, Ltd. Permanent magnet motor having composite magnets and manufacturing method thereof
DE112008001333T5 (de) * 2007-05-28 2010-04-22 Toyota Jidosha Kabushiki Kaisha, Toyota-shi Rotor für einen Motor mit eingebetteten Magneten und Motor mit eingebetteten Magneten
US8638017B2 (en) * 2009-09-18 2014-01-28 Shin-Etsu Chemical Co., Ltd. Rotor for permanent magnet rotating machine
CN101847487B (zh) * 2010-06-30 2012-05-30 烟台正海磁性材料股份有限公司 梯度矫顽力钕铁硼磁体及其生产方法
CN102611216A (zh) * 2011-01-19 2012-07-25 株式会社安川电机 混合型励磁永久磁铁及使用其的旋转电机用转子及发电机
EP2498267B1 (en) * 2011-03-09 2017-06-14 Siemens Aktiengesellschaft Layered magnet
WO2018051526A1 (ja) * 2016-09-16 2018-03-22 株式会社東芝 回転電機及び車両
CN108899190B (zh) * 2018-06-29 2020-12-22 烟台首钢磁性材料股份有限公司 一种梯度钕铁硼磁体及其制作方法
CN110224513A (zh) * 2019-05-28 2019-09-10 佛山市顺德区金泰德胜电机有限公司 一种转子铁芯和磁钢的安装结构
CN110136953B (zh) * 2019-06-17 2022-04-26 江苏科技大学 一种具有矫顽力梯度分布特征复合钕铁硼磁体的制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024098900A1 (zh) * 2022-11-10 2024-05-16 广东美芝制冷设备有限公司 一种可以提高抗退磁性的电机、压缩机和制冷机

Also Published As

Publication number Publication date
EP4178081A4 (en) 2023-08-16
WO2022016437A1 (zh) 2022-01-27
EP4178081A1 (en) 2023-05-10
US20230163647A1 (en) 2023-05-25

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