WO2016115722A1 - Moteur synchrone à aimants permanents - Google Patents

Moteur synchrone à aimants permanents Download PDF

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Publication number
WO2016115722A1
WO2016115722A1 PCT/CN2015/071401 CN2015071401W WO2016115722A1 WO 2016115722 A1 WO2016115722 A1 WO 2016115722A1 CN 2015071401 W CN2015071401 W CN 2015071401W WO 2016115722 A1 WO2016115722 A1 WO 2016115722A1
Authority
WO
WIPO (PCT)
Prior art keywords
magnetic
magnetic steel
rotor core
groove
steel group
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.)
Ceased
Application number
PCT/CN2015/071401
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English (en)
Chinese (zh)
Inventor
袁沛海
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.)
Zhejiang Topmotoring Technology Co Ltd
Original Assignee
Zhejiang Topmotoring Technology 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 Zhejiang Topmotoring Technology Co Ltd filed Critical Zhejiang Topmotoring Technology Co Ltd
Priority to PCT/CN2015/071401 priority Critical patent/WO2016115722A1/fr
Publication of WO2016115722A1 publication Critical patent/WO2016115722A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
    • 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

Definitions

  • the present invention relates to an electric machine, and more particularly to a permanent magnet synchronous motor.
  • the present invention solves the problems of the prior art and provides a permanent magnet synchronous motor with higher power density, wider speed regulation range and low cost.
  • the technical solution of the present invention is: a permanent magnet synchronous motor comprising a rotor and a stator disposed outside the rotor, the rotor including a rotor core, and the rotor core is provided with a magnetic groove, the magnetic groove Inserting a magnetic steel group, wherein the magnetic groove is uniformly disposed in a circumferential direction of the rotor core, the magnetic groove includes a first magnetic groove and a second magnetic groove, and the second magnetic groove is compared The first magnetic groove is closer to a circumferential edge of the rotor core, and the number of the first magnetic grooves is half of the number of the second magnetic grooves, and the first magnetic groove and the second magnetic groove Interlaced correspondingly, and disposed between the second magnetic groove corresponding to the first magnetic groove and the rotating shaft of the rotor core; the second magnetic groove is provided with an outer magnetic steel group, the first An inner magnetic steel group is disposed in a magnetic groove.
  • the outer magnetic steel group includes an outer magnet having a rectangular cross section, and the outer magnet is disposed along a circumferential chord direction of the cross section of the rotor core.
  • said outer magnetic steel group comprises a "V" shaped outer magnet having an open cross section, said outer magnet
  • the angle is an obtuse angle.
  • the cross section of the first magnetic groove is a "V" shape, a "U” shape or a “W” shape with an opening pointing to the circumference of the cross section of the rotor core, and the two sides of the first magnetic groove
  • the angle formed is an acute angle, and the first magnetic groove and the rotor core cross-section are circumferentially surrounded by the second magnetic groove corresponding to the first magnetic groove.
  • the inner magnetic steel group may be two rectangular inner magnets respectively disposed on two sides of a "V" shape; three rectangular inner magnets are respectively disposed on two sides of the "U” shape And one bottom edge; four rectangular inner magnets are respectively disposed in any of the three cases of the four sides of the "W" shape.
  • the magnetic pole direction of the outer magnetic steel group is disposed in the radial direction of the rotor core.
  • the inner magnetic steel group is close to a magnetic pole of one end of the outer magnetic steel group corresponding to the inner magnetic steel group and a magnetic pole of the outer magnetic steel group close to one end of the rotor core rotating shaft.
  • the outer magnetic steel group is made of a rare earth magnetic steel material
  • the inner magnetic steel group is made of a ferrite magnetic steel material or a rare earth magnetic steel material.
  • the inner magnetic steel group and the outer magnetic steel group are respectively composed of an inner magnet and an outer magnet, the inner magnet and the outer magnet are both permanent magnets, and the inner magnet has a thickness smaller than the outer magnet thickness of.
  • the externally attached type has the advantages of convenient manufacture, small rotational inertia, simple structure, etc., but the power density is not high, and the magnetic utilization rate is low;
  • the inner paste type utilizes the asymmetry of the magnetic chain structure compared to the externally attached type.
  • the unique reluctance torque generated can improve the running performance of the motor and improve the power density of the motor, but its disadvantages are also outstanding, the cost is high, the magnetic flux leakage coefficient is large; the embedded structure has its magnet placed in The inside of the rotor has a complicated structure, but the advantage is that the magnetic flux density of the air gap is high, so that a large torque can be generated.
  • the rotor of the motor adopts an embedded magnetic steel structure, and the motor adopts two sets of magnets with different specifications. In the rotor of the patent mentioned, two sets of different gauge magnets adopt a simple laminated structure, so the effect is only equivalent to a simple reinforcement of a group of magnets.
  • the two sets of magnetic steel group structures of the motor are creatively arranged in a staggered correspondence, that is, the number of outer magnetic steel groups is twice that of the inner magnetic steel group, and the outer magnetic steel group is evenly distributed along the circumference of the rotor, and one outer magnetic field is separated.
  • An inner magnetic steel group is arranged between the steel group and the rotating shaft to form an interlaced correspondence.
  • the alternating outer magnetic steel group and the inner magnetic steel group can alternately pass the magnetic lines of force through one or two layers of magnetic steel groups, and the structure can effectively suppress the back EMF coefficient, and the output torque of the permanent magnet synchronous motor is inversely proportional to the back EMF coefficient.
  • the inner magnetic steel group forms a semi-enclosed structure on the cross section, and forms a full enclosure structure together with the outer circumference of the rotor to enclose the outer magnetic steel group.
  • the magnetic poles of all outer magnetic steel groups are the same pole pointing to the outer circumference of the rotor, that is, the radial arrangement, the magnetic pole of the inner magnetic steel group, the magnetic pole close to the inner end of the outer magnetic pole is different from the magnetic pole of the inner end of the outer magnetic pole, that is, when all the outer magnetic steel
  • the end of the group pointing to the outer circumference of the rotor is N pole
  • one end of the outer magnet group pointing to the rotor shaft is S pole
  • the end of the inner magnet group close to the outer magnet group is N pole; otherwise, when the outer magnet group is directed outside the rotor
  • the end of the circle is the S pole
  • the end of the inner magnetic steel group near the outer magnetic steel group is the S pole, so that the outer magnetic field
  • This motor uses a magnetic steel group instead of a simple single magnet because the magnetic steel group can be composed of several magnets or one magnet.
  • the outer magnetic steel group may be composed of one or two magnets, and when one magnet is used, the magnet has a rectangular cross section and is arranged along the circumferential direction of the cross section of the rotor; when two magnets are used, the cross section of each magnet is The rectangles with the same shape and area are spliced into a "V" shape with an open angle and an even angle, and the angle of the obtuse angle is relatively large, relatively close to 180 degrees.
  • the inner magnet group can be composed of 2, 3 or 4 magnets.
  • the two magnets When 2 magnets are used, the two magnets form a "V" shape with an acute angle between the two sides of the outer magnet and the two sides. Two magnets are respectively disposed on two sides of "V”; when three magnets are used, a "U” shape is formed which surrounds the outer magnet and the angle between the two sides is an acute angle, and the three magnets are respectively set On the two sides and the bottom of the "U”; similarly, when four magnets are used, a "W" shape is formed in which the angle between the two sides is an acute angle.
  • the outer magnetic steel group can collect the magnetic flux generated by the inner magnetic steel group, so that the magnetic flux of the inner magnetic steel group is effectively collected.
  • the motor of the outer magnetic steel group adopts three magnets, the motor of the outer magnetic steel group is unloaded. The magnetic density exceeds its residual magnetism, resulting in a higher power density of the motor.
  • the pole arc of the inner magnetic steel group avoids the action of the armature magnetic line to bypass the same magnetic level, that is, the armature's direct-axis magnetic flux path is effectively blocked, resulting in a small straight-axis inductance, the armature intersection.
  • the shaft flux can pass through the outer rotor plate of the outer magnetic steel group of the same magnetic grade and the rotor punching between the outer magnetic steel group and the inner magnetic steel group at the same time, which is more smooth than the conventional magnetic circuit of the built-in magnetic circuit structure. And more effective, forming a larger value of the cross-axis inductance.
  • the inner magnetic steel group of the motor uses a thinner magnet, and a ferrite magnetic steel material can also be used.
  • the most direct effect of reducing the thickness is to reduce the cost.
  • the thickness of the magnet of the inner magnetic steel group is reduced, which can effectively reduce the volume occupied by the inner magnetic steel group, and effectively reduce the volume of the motor under the same performance.
  • a larger number of small-volume inner magnetic steel groups can be arranged, providing more torque in the same volume of the motor, or a smaller-sized motor at the same torque.
  • the inner magnet which accounts for more than half of the number of permanent magnets in the rotor can be made of a ferrite magnetic steel material which is cheaper and more resource-rich, and can be effectively controlled compared with a conventional motor which can only use a rare earth magnetic steel material.
  • the motor of the present invention is proposed in the current special requirements of the power system of the electric vehicle for the drive motor, and the motor has the advantages of high power density, wide speed range and low universal cost.
  • FIG. 1 is a schematic structural view of a first embodiment of the present invention
  • FIG. 2 is a schematic structural view of a second embodiment of the present invention.
  • FIG. 3 is a schematic structural view of a third embodiment of the present invention.
  • Fig. 4 is a view showing the magnetic field lines and the magnetic collecting effect of the present invention.
  • stator 2, rotor, 3, outer magnetic groove, 4, inner magnetic groove, 5, outer magnetic steel group, 6, inner magnetic steel group, 7, Rotating shaft.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a permanent magnet synchronous motor as shown in FIG. 1, comprises a rotor 2 and a stator 1 disposed in the rotor 2.
  • the rotor 2 includes a rotor core as a support member.
  • the rotor core is engraved with a plurality of magnetic grooves, and the magnetic grooves are embedded therein. Inserted with a magnetic steel group, the magnetic groove is uniformly disposed on the circumference of the cross section of the rotor core, the magnetic groove includes a first magnetic groove 4 and a second magnetic groove 3, and the second magnetic groove 3 is adjacent to a circumferential edge of the cross section of the rotor core.
  • the number of the first magnetic grooves 4 is half of the number of the second magnetic grooves 3, and the first magnetic grooves 4 and the second magnetic grooves 3 are alternately corresponding to each other and disposed on the corresponding second magnetic grooves 3 and the rotating shaft 7 of the rotor core. between.
  • the outer magnetic steel group 5 is disposed in the second magnetic groove 3, and the outer magnetic steel group 5 includes an outer magnet having a rectangular cross section, and the outer magnet is disposed along the circumferential chord direction of the cross section of the rotor core, and the magnetic pole direction of the outer magnetic steel group 5 It is arranged radially along the rotor core.
  • the outer magnetic steel group 5 is a permanent magnet made of a rare earth magnetic steel material.
  • An inner magnetic steel group 6 is disposed in the first magnetic groove 4.
  • the cross section of the first magnetic groove 4 is a "V" shape with an opening pointing toward the circumference of the cross section of the rotor core, and the first magnetic groove 4 has an acute angle and an inner magnetic field.
  • the steel group 6 includes two rectangular inner magnets respectively disposed on two sides of a "V" shape, and the first magnetic groove 4 and the rotor core cross-sectional circumference form a surrounding, surrounding the first magnetic groove 4 Corresponding second magnetic slot 3.
  • the magnetic pole direction of the inner magnetic steel group 6 is arranged along the circumferential direction of the rotor core; the inner magnetic steel group 6 is close to the magnetic pole of one end of the outer magnetic steel group 5 corresponding to the inner magnetic steel group 6, and the outer magnetic steel group 5 is close to the rotor core
  • the magnetic poles at one end of the rotating shaft 7 are different.
  • the inner magnetic steel group 6 is a permanent magnet made of a ferrite magnetic steel material or a rare earth magnetic steel material.
  • the thickness of the inner magnet is smaller than the thickness of the outer magnet.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the outer magnet group 5 includes a "V"-shaped outer magnet having an open-ended cross section, and the outer magnet has an obtuse angle.
  • the cross section of the first magnetic groove 4 is a U-shape with an opening pointing toward the circumference of the cross section of the rotor core, and the inner magnetic steel group 6 includes three inner magnets, which are respectively disposed on the two sides and one bottom of the U-shape. side.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the cross section of the first magnetic groove 4 is a "W" shape in which the opening is directed to the circumference of the cross section of the rotor core
  • the inner magnetic steel group 6 includes four rectangular insides. The magnets and four rectangular inner magnets are respectively disposed on the four sides of the "W" shape.

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

Abstract

La présente invention concerne un moteur synchrone à aimants permanents, comprenant un rotor (2) et un stator (1) agencé à l'extérieur du rotor. Le rotor comprend un noyau de rotor. Des fentes magnétiques dans lesquelles des groupes d'acier magnétique sont intégrés sont prévues dans le noyau de rotor. Les fentes magnétiques sont disposées de manière uniforme dans la direction circonférentielle du noyau de rotor. Les fentes magnétiques comprennent des premières fentes magnétiques (4) et des secondes fentes magnétiques (3). Les secondes fentes magnétiques sont plus proches de la périphérie du noyau de rotor que les premières fentes magnétiques. Le nombre des premières fentes magnétiques est la moitié de celui des secondes fentes magnétiques. Les premières fentes magnétiques et les secondes fentes magnétiques correspondent les unes aux autres d'une manière en quinconce, et chaque première fente magnétique est disposée entre la seconde fente magnétique correspondante et un arbre rotatif (7) du noyau de rotor. Des groupes d'acier magnétique externes (5) sont agencés dans les secondes fentes magnétiques, et des groupes d'acier magnétique internes (6) sont agencés dans les premières fentes magnétiques. Le moteur présente les avantages d'une haute densité de puissance, d'une large plage de régulation de vitesse et d'un faible coût.
PCT/CN2015/071401 2015-01-23 2015-01-23 Moteur synchrone à aimants permanents Ceased WO2016115722A1 (fr)

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PCT/CN2015/071401 WO2016115722A1 (fr) 2015-01-23 2015-01-23 Moteur synchrone à aimants permanents

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Application Number Priority Date Filing Date Title
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Cited By (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106953488A (zh) * 2017-05-22 2017-07-14 江苏雅迪科技发展有限公司宁波分公司 一种内嵌式轮毂电机及采用其的电动车
CN106972663A (zh) * 2017-04-01 2017-07-21 上海英磁新能源科技有限公司 一种高转矩永磁电机
CN107070029A (zh) * 2017-04-01 2017-08-18 上海英磁新能源科技有限公司 一种高速电机转子及电机
CN109038881A (zh) * 2018-08-30 2018-12-18 沈阳工业大学 一种少永磁体高性能永磁磁阻同步电机
CN109149822A (zh) * 2018-11-07 2019-01-04 珠海格力节能环保制冷技术研究中心有限公司 电机转子及电机
CN109217513A (zh) * 2018-11-07 2019-01-15 珠海格力节能环保制冷技术研究中心有限公司 电机转子、电机、压缩机及热泵系统
CN109450138A (zh) * 2018-12-28 2019-03-08 华人运通控股有限公司 内嵌式磁钢外转子铁芯组件及轮毂电机
CN109560676A (zh) * 2018-12-25 2019-04-02 苏州英磁新能源科技有限公司 一种低噪音永磁同步电机转子
CN109638998A (zh) * 2018-12-04 2019-04-16 珠海格力电器股份有限公司 电机转子、电机及电动汽车
CN110098709A (zh) * 2019-05-29 2019-08-06 河南全新机电设备有限公司 一种异步电机转子的结构
CN111478471A (zh) * 2020-05-12 2020-07-31 宁德时代电机科技有限公司 一种高效高承受不平衡负载永磁同步发电机装置
CN111786481A (zh) * 2020-07-13 2020-10-16 无锡欧瑞京机电有限公司 高功率密度新能源汽车用永磁电机的多层转子磁钢结构
CN112600371A (zh) * 2020-12-18 2021-04-02 山东理工大学 锁紧环式模块化双励磁驱动电机转子生产方法
CN113922535A (zh) * 2021-10-11 2022-01-11 安徽明腾永磁机电设备有限公司 一种小型自启动铸铝转子永磁同步电机冲片
WO2023123536A1 (fr) * 2021-12-31 2023-07-06 江苏大学 Moteur à aimant permanent à champ magnétique réglable à condition de fonctionnement variable à haute performance, procédé de conception de guide de flux magnétique associé, et régulation de fuite de flux magnétique et son procédé de commande
CN116566088A (zh) * 2023-06-15 2023-08-08 淮阴工学院 一种永磁同步电机的转子结构
US20230412018A1 (en) * 2021-01-08 2023-12-21 Aisin Corporation Rotor core
CN117767610A (zh) * 2023-12-12 2024-03-26 淮阴工学院 一种双磁路永磁同步电机转子结构
CN121485382A (zh) * 2026-01-09 2026-02-06 浙江金龙电机股份有限公司 一种永磁电机转子磁片冲入装配机

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US20070159021A1 (en) * 2005-12-19 2007-07-12 Emerson Electric Co. Composite magnet structure for rotor
US7719153B2 (en) * 2005-12-21 2010-05-18 Ut-Battelle, Llc Permanent magnet machine and method with reluctance poles and non-identical PM poles for high density operation
WO2013133474A1 (fr) * 2012-03-08 2013-09-12 일진전기 주식회사 Moteur à aimants permanents intérieurs
CN104242509A (zh) * 2013-06-05 2014-12-24 上海欧普斯达光纤通信设备有限公司 一种永磁复合激磁同步电机转子
CN104638863A (zh) * 2015-01-23 2015-05-20 浙江迈雷科技有限公司 一种永磁同步电机

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Publication number Priority date Publication date Assignee Title
US20070159021A1 (en) * 2005-12-19 2007-07-12 Emerson Electric Co. Composite magnet structure for rotor
US7719153B2 (en) * 2005-12-21 2010-05-18 Ut-Battelle, Llc Permanent magnet machine and method with reluctance poles and non-identical PM poles for high density operation
WO2013133474A1 (fr) * 2012-03-08 2013-09-12 일진전기 주식회사 Moteur à aimants permanents intérieurs
CN104242509A (zh) * 2013-06-05 2014-12-24 上海欧普斯达光纤通信设备有限公司 一种永磁复合激磁同步电机转子
CN104638863A (zh) * 2015-01-23 2015-05-20 浙江迈雷科技有限公司 一种永磁同步电机

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106972663A (zh) * 2017-04-01 2017-07-21 上海英磁新能源科技有限公司 一种高转矩永磁电机
CN107070029A (zh) * 2017-04-01 2017-08-18 上海英磁新能源科技有限公司 一种高速电机转子及电机
CN107070029B (zh) * 2017-04-01 2023-08-25 上海英磁新能源科技有限公司 一种高速电机转子及电机
CN106972663B (zh) * 2017-04-01 2023-09-01 上海英磁新能源科技有限公司 一种高转矩永磁电机
CN106953488A (zh) * 2017-05-22 2017-07-14 江苏雅迪科技发展有限公司宁波分公司 一种内嵌式轮毂电机及采用其的电动车
CN109038881A (zh) * 2018-08-30 2018-12-18 沈阳工业大学 一种少永磁体高性能永磁磁阻同步电机
CN109217513A (zh) * 2018-11-07 2019-01-15 珠海格力节能环保制冷技术研究中心有限公司 电机转子、电机、压缩机及热泵系统
CN109217513B (zh) * 2018-11-07 2023-10-27 珠海格力节能环保制冷技术研究中心有限公司 电机转子、电机、压缩机及热泵系统
CN109149822B (zh) * 2018-11-07 2023-10-27 珠海格力节能环保制冷技术研究中心有限公司 电机转子及电机
CN109149822A (zh) * 2018-11-07 2019-01-04 珠海格力节能环保制冷技术研究中心有限公司 电机转子及电机
CN109638998A (zh) * 2018-12-04 2019-04-16 珠海格力电器股份有限公司 电机转子、电机及电动汽车
CN109638998B (zh) * 2018-12-04 2024-05-07 珠海格力电器股份有限公司 电机转子、电机及电动汽车
CN109560676A (zh) * 2018-12-25 2019-04-02 苏州英磁新能源科技有限公司 一种低噪音永磁同步电机转子
CN109450138A (zh) * 2018-12-28 2019-03-08 华人运通控股有限公司 内嵌式磁钢外转子铁芯组件及轮毂电机
CN110098709A (zh) * 2019-05-29 2019-08-06 河南全新机电设备有限公司 一种异步电机转子的结构
CN111478471A (zh) * 2020-05-12 2020-07-31 宁德时代电机科技有限公司 一种高效高承受不平衡负载永磁同步发电机装置
CN111786481A (zh) * 2020-07-13 2020-10-16 无锡欧瑞京机电有限公司 高功率密度新能源汽车用永磁电机的多层转子磁钢结构
CN112600371B (zh) * 2020-12-18 2022-06-21 山东理工大学 锁紧环式模块化双励磁驱动电机转子生产方法
CN112600371A (zh) * 2020-12-18 2021-04-02 山东理工大学 锁紧环式模块化双励磁驱动电机转子生产方法
EP4220899A4 (fr) * 2021-01-08 2024-04-17 Aisin Corporation Noyau de rotor
US20230412018A1 (en) * 2021-01-08 2023-12-21 Aisin Corporation Rotor core
US12519353B2 (en) * 2021-01-08 2026-01-06 Aisin Corporation Rotor core with plurality of permanent magnets and magnet holes with bridges between magnets/magnet holes
CN113922535A (zh) * 2021-10-11 2022-01-11 安徽明腾永磁机电设备有限公司 一种小型自启动铸铝转子永磁同步电机冲片
WO2023123536A1 (fr) * 2021-12-31 2023-07-06 江苏大学 Moteur à aimant permanent à champ magnétique réglable à condition de fonctionnement variable à haute performance, procédé de conception de guide de flux magnétique associé, et régulation de fuite de flux magnétique et son procédé de commande
CN116566088A (zh) * 2023-06-15 2023-08-08 淮阴工学院 一种永磁同步电机的转子结构
CN117767610A (zh) * 2023-12-12 2024-03-26 淮阴工学院 一种双磁路永磁同步电机转子结构
CN121485382A (zh) * 2026-01-09 2026-02-06 浙江金龙电机股份有限公司 一种永磁电机转子磁片冲入装配机

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