WO2022193592A1 - Rotor de moteur électrique et moteur électrique - Google Patents

Rotor de moteur électrique et moteur électrique Download PDF

Info

Publication number
WO2022193592A1
WO2022193592A1 PCT/CN2021/119322 CN2021119322W WO2022193592A1 WO 2022193592 A1 WO2022193592 A1 WO 2022193592A1 CN 2021119322 W CN2021119322 W CN 2021119322W WO 2022193592 A1 WO2022193592 A1 WO 2022193592A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotor
magnetic
motor
magnetic poles
stator
Prior art date
Application number
PCT/CN2021/119322
Other languages
English (en)
Chinese (zh)
Inventor
葛梦
李文瑞
兰海
武谷雨
龚黎明
Original Assignee
美的威灵电机技术（上海）有限公司
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 美的威灵电机技术（上海）有限公司 filed Critical 美的威灵电机技术（上海）有限公司
Priority to KR1020237029189A priority Critical patent/KR20230133912A/ko
Priority to JP2023553440A priority patent/JP2024509433A/ja
Publication of WO2022193592A1 publication Critical patent/WO2022193592A1/fr

Links

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
    • H02K1/2786—Outer rotors
    • H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
    • H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
    • H02K1/2791—Surface mounted magnets; Inset magnets
    • H02K1/2792—Surface mounted magnets; Inset magnets with magnets arranged in Halbach arrays
    • 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
    • H02K1/2786—Outer rotors
    • 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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • H02K1/185—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures to outer stators
    • 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
    • H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
    • H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
    • 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

Definitions

  • the present application relates to the technical field of motors, and in particular, to a motor rotor and a motor.
  • Permanent magnet motors are widely used in industrial production and household appliances, including stators and rotors.
  • a plurality of stator iron cores are arranged on the rotor of the motor rotor, and three-phase windings are formed by winding on the stator iron cores.
  • the motor rotor motors are mostly surface-mounted permanent magnet motor structures.
  • the permanent magnets are usually magnetized radially or in parallel, and the magnetic fields of the formed permanent magnets are uniformly distributed on the rotor side and the stator side. , the power density of the motor is not high, and the output capacity of the motor is limited.
  • the main purpose of the present application is to provide a motor rotor, which aims to solve the problem in the prior art that it is difficult to increase the power density of the motor.
  • a motor rotor which includes:
  • a plurality of permanent magnets are arranged along the circumferential direction of the rotor iron core to form a plurality of magnetic poles in the circumferential direction of the rotor iron core, and the magnetization directions of two adjacent magnetic poles are opposite.
  • the angle between the orientation of the magnetic domain of the permanent magnet in the magnetic pole and the center line of the magnetic pole is ⁇ , and the ⁇ is not less than zero degrees and not more than 40 degrees, so that the magnetic flux density is high in the center of the magnetic pole and increases with the direction of the two ends in the circumferential direction. Gradually decreasing magnetic properties.
  • the position of the center line gradually increases to the position away from the center line of the magnetic pole.
  • the maximum value of the ⁇ is not less than 18 degrees and not greater than 40 degrees.
  • the maximum value of the ⁇ is not less than 15 degrees and not greater than 35 degrees.
  • the inner surface and the outer surface of each of the permanent magnets are arc-shaped.
  • the diameter of the outer surface arc of each piece of the permanent magnet is between 90 mm and 320 mm
  • the axial height of each piece of the permanent magnet along the rotor core is less than or equal to 50 mm
  • the radial thickness of each of the permanent magnets along the rotor core is less than or equal to 10 mm.
  • a plurality of the permanent magnets are attached and fixed on the inner surface of the rotor core.
  • each of the permanent magnets is formed with one of the magnetic poles or an even number of the magnetic poles.
  • the even number of the poles is 2 or 4.
  • the present application also proposes a motor, the motor includes a stator, a rotating shaft and the motor rotor according to any one of the above, the rotating shaft is fixed on a rotor iron core rotated by the motor, the stator and the rotor are concentric, and sleeved on the inner side of the rotor.
  • the technical solution of the present application is to arrange a plurality of permanent magnets along the circumferential direction of the rotor core to form a plurality of magnetic poles in the circumferential direction of the rotor core.
  • the magnetization directions of two adjacent magnetic poles are opposite, and the magnetic
  • the angle between the domain orientation and the center line of the magnetic pole is ⁇ , and ⁇ is not less than zero degrees and not more than 40 degrees, so as to form a magnetic characteristic that the magnetic flux density is high in the center of the magnetic pole and gradually decreases as it goes to both ends in the circumferential direction.
  • the magnetic flux interlinked with the stator will increase, (as can be seen from the magnetic field lines) because the magnetic field lines converge to the center line of the magnetic pole, so the magnetic density close to the center line of the magnetic pole will increase.
  • the two ends along the circumferential direction are low, so that the magnetic field close to the inner side of the rotor is strengthened, and the magnetic field outside the rotor is weakened, so that the magnetic field strength of the air gap between the stator and the rotor is increased, and the saturation degree of the rotor core is reduced, so that the motor output rotates.
  • the torque increases and the power density of the motor is improved.
  • FIG. 1 is a schematic diagram of the assembly structure of the stator and the rotor of the motor of the application;
  • FIG. 2 is a schematic diagram of the assembly structure of the rotor and the connecting frame of the motor of the application;
  • FIG. 3 is a schematic diagram of the configuration of the magnetization directions of a pair of magnetic poles in the rotor of the motor of the present application;
  • Fig. 4 is the schematic diagram that each permanent magnet of the motor rotor of the application is distributed with a magnetic pole
  • FIG. 5 is a schematic diagram showing that each permanent magnet of the motor rotor of the present application has two magnetic poles distributed
  • FIG. 6 is a schematic diagram showing that each permanent magnet of the motor rotor of the application is distributed with four magnetic poles;
  • FIG. 7 is a schematic diagram of the comparison of the motor back EMF FFT formed by the permanent magnet of the motor rotor of the application and the conventional permanent magnet;
  • FIG. 8 is a schematic diagram showing the comparison of the proportion of harmonics of each order of the motor back EMF formed by the permanent magnet of the motor rotor of the application and the conventional permanent magnet;
  • FIG. 9 is a schematic diagram of an embodiment of a stator punch of the motor of the application.
  • FIG. 10 is a schematic diagram of another embodiment of the stator punch of the motor of the application.
  • FIG. 11 is a schematic diagram of another embodiment of the stator punch of the motor of the application.
  • FIG. 12 is a schematic diagram of still another embodiment of the stator punch of the motor of the application.
  • FIG. 13 is a schematic structural diagram of the stator of the motor of the application.
  • FIG. 14 is a schematic diagram of the arrangement and connection of the coils of the rotor of the motor of the present application on the stator teeth.
  • the present application proposes a motor rotor, as shown in FIG. 1 , the motor rotor is sleeved on the outer side of the stator 2 and is concentric with the stator 2, and cooperates with the stator 2 to form a motor, as shown in FIG.
  • the motor rotor 1 includes: a rotor iron core 12, the rotor iron core 12 is an annular structure; a plurality of permanent magnets 11, a plurality of the permanent magnets 11 are arranged along the circumferential direction of the rotor iron core 12, so as to A plurality of magnetic poles are formed in the circumferential direction of the rotor core 12 (Fig.
  • FIG 3 shows a schematic diagram of the configuration of the magnetization direction under a pair of magnetic poles, and each permanent magnet 11 in the figure has only one magnetic pole), and the magnetization of two adjacent magnetic poles In the opposite direction, the magnetic domain orientation of the permanent magnet 11 in each of the magnetic poles is sandwiched by its magnetic pole centerline (the magnetic pole centerline is shown by the dotted line in Figure 3, and the magnetic domain is shown by the arrow in Figure 3-6).
  • the angle is ⁇ , which is not less than zero degrees and not more than 40 degrees to form a magnetic characteristic in which the magnetic flux density is high in the center of the magnetic pole and gradually decreases toward both ends in the circumferential direction.
  • the magnetic field close to the inner side of the rotor core is strengthened and the magnetic field outside the rotor core is weakened (as shown by the dashed arc in the figure).
  • each permanent magnet 11 may be distributed with one magnetic pole or multiple magnetic poles.
  • the number of magnetic poles on each permanent magnet 11 is an even number, such as 2, 4, 8, etc.
  • FIG. 4 shows a schematic diagram of one magnetic pole distributed on each permanent magnet 11
  • FIG. 5 shows a schematic diagram of two magnetic poles distributed on each permanent magnet 11
  • FIG. 6 shows A schematic diagram of four magnetic poles distributed on each permanent magnet 11 is shown.
  • the magnetization directions of two adjacent magnetic poles are opposite.
  • Figures 3 and 5 show the configuration diagrams of the magnetization directions under a pair of magnetic poles, forming a permanent magnetic field that can generate an interaction force with the current magnetic field formed by the stator 2 .
  • each permanent magnet 11 has multiple magnetic domains.
  • the permanent magnet 11 uses the method of filling or pressing to manufacture a complete magnet, and then in a special Magnetization is performed in the fixture of the mold, or the direction of the flow channel of the material is controlled to form a magnetic domain in a specific direction during the mold filling process.
  • the processing efficiency is high, and it is relatively easy to achieve mass production.
  • the magnetic domains in each permanent magnet 11 have multiple orientations (the directions indicated by the arrows in FIG.
  • each permanent magnet 11 has an arc-shaped inner surface and an arc-shaped outer surface (for example, a circular arc segment with the same radius, or an arc in the middle). shape, the combination of straight lines at both ends, or the combination of two arcs with different radii, etc.), in this embodiment, the outer surface of each permanent magnet 11 is arranged in contact with the inner side of the rotor core 12.
  • the rotor core 12 can also be slotted to fix the permanent magnets 11 in the slots.
  • each permanent magnet 11 The diameter of the outer surface arc of each permanent magnet 11 is between 90 mm and 320 mm, the axial height of each permanent magnet 11 along the rotor core 12 is less than 50 mm, and each permanent magnet 11 is less than 50 mm in diameter.
  • the thickness of the magnets 11 along the radial direction of the rotor core 12 is less than 10 mm, so that when the motor rotor is used in the motor, the output torque of the motor is high, the performance requirements are met, and the cost is low.
  • the motor rotor proposed in this embodiment can be applied to the motor of the washing machine. Due to the higher output torque of the motor, the power of the washing machine can be ensured, and the cost can be reduced.
  • the angle between the orientation of the magnetic domain of the permanent magnet 11 in each magnetic pole and the center line of the magnetic pole is ⁇ , and the ⁇ is not less than zero degrees and not greater than 40 degrees, corresponding to the inner direction of the permanent magnet 11 of each magnetic pole.
  • There is a certain magnetic domain orientation change law in the magnetic domain As shown in Figure 3-6, in the ring direction of the rotor core 12, the angle ⁇ within the same magnetic pole gradually decreases from one side to the other and then gradually increases.
  • the magnetic domain orientation of each magnetic domain can be rotated by a specific angle in turn, so that the magnetic domain orientation in each magnetic pole is generally radial. Magnetic properties that gradually decrease toward both ends in the circumferential direction.
  • the magnetic flux interlinked with the stator will increase, (as can be seen from the magnetic field lines) because the magnetic field lines converge to the center line of the magnetic pole, so the magnetic density near the center line of the magnetic pole is high, and the two ends along the circumferential direction Low, so that the magnetic field close to the inner side of the rotor core is strengthened, the magnetic field outside the rotor core is weakened, and the magnetic field is sinusoidally distributed. It is beneficial to reduce cogging torque, reduce torque ripple, and reduce the noise of motor operation. Of course, the orientation of the magnetic domains may not be set according to the same rotation angle, as long as the magnetic lines of force are concentrated toward the inner side of the rotor.
  • the value range of the maximum value of ⁇ is related to the number of magnetic poles.
  • the maximum value of ⁇ is not less than 15 degrees and not greater than 35 degrees, so that the rotor
  • the inner magnetic field of the iron core is strengthened, and the outer magnetic field is weakened, so that the magnetic field strength of the air gap between the stator and the rotor is enhanced, and the magnetic field saturation degree on the rotor side is reduced, the output performance of the motor is improved, and the power density is increased, and the magnetic field distribution is more sinusoidal and harmonic.
  • the maximum value of the ⁇ is not less than 18 degrees and not greater than 40 degrees, and any value within this range is acceptable , for example, 30 degrees, which can be set as required.
  • the application also proposes a motor, the motor includes a stator 2, a rotating shaft and the above-mentioned motor rotor, the rotating shaft is fixed on the rotor iron core 11 of the motor rotor, the stator and the rotor are concentric, and sleeved on the inner side of the rotor.
  • An air gap is formed between the stator 2 and the motor rotor 1 (not marked in the figure). Since the magnetic field inside the rotor core 12 is enhanced, the magnetic induction intensity at the air gap increases. When the coil 3 on the stator 2 is energized , the interaction force between the strengthened permanent magnet field and the current magnetic field on the motor rotor 1 increases, which improves the power density of the motor. As shown in FIG. 7 , the permanent magnet 11 proposed in this embodiment forms an enhanced inner magnetic field of the rotor and an outer magnetic field. When the magnetic field distribution is weakened and the magnetic field is uniformly distributed inside and outside, the back EMF FFT diagram of the motor is compared.
  • the amplitude of the no-load back EMF fundamental wave is larger, indicating that the output capacity of the motor is better. strong, which is beneficial to improve the power density of the motor.
  • FIG. 8 when the permanent magnet 11 proposed in the present embodiment forms the magnetic field distribution inside the rotor with enhanced magnetic field, the magnetic field distribution of the external magnetic field weakened and the magnetic field distributed uniformly inside and outside, the comparison diagram of the proportion of each harmonic of the back EMF of the motor can be seen.
  • the 5th and 7th harmonics in the back EMF are significantly reduced, indicating that the magnetic field distribution towards the inner side of the rotor core 12 is more sinusoidal, which is conducive to reducing cogging torque and torque ripple, reducing Vibration noise.
  • the rotor iron core 12 is generally made of magnetically conductive material, in this embodiment, since the magnetic field toward the outside of the rotor iron core 12 is very small, the magnetic circuit saturation of the rotor 1 is avoided, which can not only improve the output capacity of the motor, but also reduce the The loss of the rotor core 12 is reduced, and the motor efficiency is further improved.
  • the number of rotor poles proposed in this embodiment has higher motor output efficiency, so that the number of teeth can be reduced without relying on increasing the number of unit motors.
  • the slot torque can reduce the winding time during the manufacturing process and reduce the manufacturing and processing difficulty of the motor.
  • the stator 2 includes a stator punch formed of a magnetically conductive material. As shown in FIGS. 9-12 , the stator punch has an annular stator yoke 22 , and the stator teeth 21 are formed by extending outward from the outer diameter of the stator yoke 22 .
  • the stator 2 is formed by stacking a plurality of stator punching sheets, and a plurality of sector-shaped units are butted against each other to form a stator punching sheet.
  • the two ends of the sector-shaped units are respectively provided with grooves 27 and protrusions 25, and the protrusions 25 are inserted into the grooves at one end of the adjacent fan-shaped units. 27 to form stator punches.
  • the lamination unit is formed by a bar-shaped stator tooth belt having a stator yoke 22 and a plurality of stator teeth 21 in a spiral shape. As shown in FIG.
  • a plurality of notches 28 are spaced apart on the stator yoke 22 , and the stator teeth 21 and the grooves The openings 28 are located on opposite sides of the stator tooth 21, respectively.
  • the existence of the slot 27 facilitates the helical winding of the strip stator tooth belt.
  • the dotted line and the realization in Figure 12 show two stator tooth belts, respectively.
  • the incoming material for processing the stator is generally a strip-shaped stamping plate. This way of forming the stator by spirally wrapping the stator tooth belt can save the material of the stamping plate, make the stamping plate form less waste, and help save costs.
  • a stator slot 25 is formed between two adjacent stator teeth 21 . In an optional embodiment, as shown in FIG.
  • the ratio of the stator slot 25 to the number of rotor poles is 3:4, and a coil 3 is wound around the stator teeth 21 .
  • the stator teeth 21 are provided with an insulating layer (not marked in the figure), the insulating layer is wrapped around the surface of the stator teeth 21, and the insulating layer is an insulating film or two pieces of insulation slots to insulate the coil 3 from the stator teeth 21 .
  • the arrangement of the coil 3 on the stator teeth 21 is shown in Figure 14.
  • the windings on the adjacent three stator teeth 21 along the circumferential direction of the stator yoke 22 are respectively connected to currents with a phase difference of 120° to form three-phase windings.
  • the ratio of 25 to the number of rotor poles is 3:4, so the number of windings per phase is exactly one-third of the number of stator teeth 21, where the number of rotor poles is the total number of magnetic poles on rotor 1, such as when each When one magnetic pole is formed on the permanent magnet 11, the number of rotor poles is equal to the number of permanent magnets 11. When two magnetic poles are formed on each permanent magnet 11, the number of rotor poles is equal to twice the number of permanent magnets 11. When four magnetic poles are formed on 11, the number of rotor poles is equal to four times the number of permanent magnets 11.
  • the number of stator slots 25 is 30, the number of rotor poles is 40, the number of unit motors is 10, the cogging torque is low, and the winding time is relatively short.

Landscapes

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

Abstract

L'invention concerne un rotor de moteur électrique et un moteur électrique, le rotor de moteur électrique comprenant un noyau de rotor et une pluralité d'aimants permanents. La pluralité d'aimants permanents sont agencés dans la direction circonférentielle du noyau de rotor de manière à former une pluralité de pôles magnétiques dans la direction circonférentielle du noyau de rotor, les directions de magnétisation de deux pôles magnétiques adjacents sont opposées l'une à l'autre, un angle entre l'orientation de domaine magnétique de l'aimant permanent dans chaque pôle magnétique et la ligne centrale du pôle magnétique est α, et α n'est pas inférieur à 0 degré et n'est pas supérieur à 40 degrés, de manière à former une caractéristique magnétique où la densité de flux magnétique est importante au centre du pôle magnétique et diminue progressivement vers deux extrémités dans la direction circonférentielle.
PCT/CN2021/119322 2021-03-15 2021-09-18 Rotor de moteur électrique et moteur électrique WO2022193592A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020237029189A KR20230133912A (ko) 2021-03-15 2021-09-18 모터 회전자 및 모터
JP2023553440A JP2024509433A (ja) 2021-03-15 2021-09-18 電気モータ回転子及び電気モータ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110278645.1 2021-03-15
CN202110278645.1A CN112865370A (zh) 2021-03-15 2021-03-15 电机转子以及电机

Publications (1)

Publication Number Publication Date
WO2022193592A1 true WO2022193592A1 (fr) 2022-09-22

Family

ID=75994541

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/119322 WO2022193592A1 (fr) 2021-03-15 2021-09-18 Rotor de moteur électrique et moteur électrique

Country Status (4)

Country Link
JP (1) JP2024509433A (fr)
KR (1) KR20230133912A (fr)
CN (1) CN112865370A (fr)
WO (1) WO2022193592A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112865370A (zh) * 2021-03-15 2021-05-28 美的威灵电机技术（上海）有限公司 电机转子以及电机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101816117A (zh) * 2007-08-01 2010-08-25 菲舍尔和佩克尔应用有限公司 改进的电器、转子和磁性元件
CN105762999A (zh) * 2016-04-26 2016-07-13 沈阳工业大学 一种永磁转子低谐波充磁方法和装置
WO2019219985A2 (fr) * 2019-03-11 2019-11-21 Siemens Gamesa Renewable Energy A/S Ensemble aimant permanent comprenant trois dispositifs à aimant doté de différents modèles d'alignement de domaine magnétique
CN111834116A (zh) * 2019-04-23 2020-10-27 西门子歌美飒可再生能源公司 制造具有减小的变形的烧结永磁体
CN112865370A (zh) * 2021-03-15 2021-05-28 美的威灵电机技术（上海）有限公司 电机转子以及电机
CN113113989A (zh) * 2021-03-15 2021-07-13 美的威灵电机技术（上海）有限公司 外转子永磁电机以及洗衣机

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080036894A (ko) * 2006-10-24 2008-04-29 삼성광주전자 주식회사 브러시리스직류모터

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101816117A (zh) * 2007-08-01 2010-08-25 菲舍尔和佩克尔应用有限公司 改进的电器、转子和磁性元件
CN105762999A (zh) * 2016-04-26 2016-07-13 沈阳工业大学 一种永磁转子低谐波充磁方法和装置
WO2019219985A2 (fr) * 2019-03-11 2019-11-21 Siemens Gamesa Renewable Energy A/S Ensemble aimant permanent comprenant trois dispositifs à aimant doté de différents modèles d'alignement de domaine magnétique
CN111834116A (zh) * 2019-04-23 2020-10-27 西门子歌美飒可再生能源公司 制造具有减小的变形的烧结永磁体
CN112865370A (zh) * 2021-03-15 2021-05-28 美的威灵电机技术（上海）有限公司 电机转子以及电机
CN113113989A (zh) * 2021-03-15 2021-07-13 美的威灵电机技术（上海）有限公司 外转子永磁电机以及洗衣机

Also Published As

Publication number Publication date
KR20230133912A (ko) 2023-09-19
CN112865370A (zh) 2021-05-28
JP2024509433A (ja) 2024-03-01

Similar Documents

Publication Publication Date Title
US6211595B1 (en) Armature structure of toroidal winding type rotating electric machine
JP5610726B2 (ja) 電気モータ
JP2007209186A (ja) 同期電動機及び同期電動機の製造方法
WO2015097767A1 (fr) Machine électrique rotative de type à aimant permanent
WO2022193593A1 (fr) Moteur à aimants permanents à rotor externe et machine de lavage
CN110601481A (zh) 一种双转子永磁同步磁阻电机及配置方法
WO2021056902A1 (fr) Moteur électrique et appareil électroménager
CN113178961B (zh) 一种轴向模块化磁通反向电机
WO2022193592A1 (fr) Rotor de moteur électrique et moteur électrique
CN210350986U (zh) 一种双转子永磁同步磁阻电机
JP2003250235A (ja) 単相コンデンサ駆動モータ及びその製造方法
CN214850681U (zh) 转子冲片、转子、电机及电动工具
JP2003009491A (ja) 永久磁石形ブラシレスｄｃモータ
CN112615509A (zh) 双永磁体内嵌式永磁同步电机结构
CN107046353B (zh) 电机和具有其的压缩机
CN113193670B (zh) 一种模块化磁通反向电机
CN218958633U (zh) 用于电机的定子的定子冲片、定子和电机
JP2001218436A (ja) 永久磁石電動機
WO2019062130A1 (fr) Rotor de moteur, moteur à aimants permanents et compresseur
CN216851480U (zh) 电机的转子和电机
CN114552925B (zh) 一种定子永磁型轴径向混合磁场永磁磁通切换电机
CN219268578U (zh) 一种空心杯电机
CN212162954U (zh) 表贴式转子结构及电机
CN215934543U (zh) 定子冲片、电机、风机及制冷设备
CN209982197U (zh) 一种同性极励磁电机

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21931167

Country of ref document: EP

Kind code of ref document: A1

ENP Entry into the national phase

Ref document number: 20237029189

Country of ref document: KR

Kind code of ref document: A

WWE Wipo information: entry into national phase

Ref document number: 1020237029189

Country of ref document: KR

WWE Wipo information: entry into national phase

Ref document number: 2023553440

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21931167

Country of ref document: EP

Kind code of ref document: A1