WO2011002043A1 - Machine électrique rotative du type à aimants permanents - Google Patents

Machine électrique rotative du type à aimants permanents Download PDF

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Publication number
WO2011002043A1
WO2011002043A1 PCT/JP2010/061206 JP2010061206W WO2011002043A1 WO 2011002043 A1 WO2011002043 A1 WO 2011002043A1 JP 2010061206 W JP2010061206 W JP 2010061206W WO 2011002043 A1 WO2011002043 A1 WO 2011002043A1
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WIPO (PCT)
Prior art keywords
permanent magnet
rotor core
rotor
magnet
permanent
Prior art date
Application number
PCT/JP2010/061206
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English (en)
Japanese (ja)
Inventor
盛幸 枦山
健太 金子
正哉 井上
Original Assignee
三菱電機株式会社
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.)
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Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to CN2010800299189A priority Critical patent/CN102474142A/zh
Priority to JP2011520971A priority patent/JPWO2011002043A1/ja
Publication of WO2011002043A1 publication Critical patent/WO2011002043A1/fr

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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
    • 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

Definitions

  • the present invention relates to a rotating electrical machine such as a vehicular electric motor, and more particularly to a rotor structure of a rotating electrical machine in which a permanent magnet is disposed inside the rotor.
  • the permanent magnet type motor includes a motor with a surface magnet structure (SPMM: Surface Permanent Magnet Motor) in which a permanent magnet is attached to the surface of the rotor, and a motor with an embedded magnet structure in which the permanent magnet is embedded in the rotor.
  • SPMM Surface Permanent Magnet Motor
  • IPMM Interior Permanent Magnet Motor
  • This permanent magnet type reluctance rotating electric machine has a rotor in which two permanent magnets are embedded in a circumferential direction at predetermined intervals in order to form a magnetic salient pole portion in a rotor core, One end of each permanent magnet is located closer to the outer periphery so as to form a thin tip portion between the outer periphery of the rotor core and the other end is closer to the center side.
  • the chip portions are arranged so that the opening angle of the inner end angle of each chip portion is a predetermined electrical angle.
  • a permanent magnet having a weight of 1 to several kg is embedded in a rotor having a large outer size (ie, radius). Rotates at a rotational speed of about 6000 rpm. For this reason, in the case of the surface magnet structure, a mechanism for firmly holding the permanent magnet must be provided separately, and the configuration is difficult. For this reason, a permanent magnet type electric motor for an electric vehicle is often used with an embedded magnet structure. However, even with a permanent magnet type electric motor having an embedded magnet structure, it is a matter of course that the rotor is required to have a structure that only receives the centrifugal force generated in the permanent magnet.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a permanent magnet type rotating electrical machine that effectively suppresses generation of leakage magnetic flux while maintaining strength against centrifugal force.
  • a permanent magnet type rotating electric machine includes a stator having a stator coil housed in a slot, and the stator rotating through a rotation gap.
  • a rotor core that can be arranged, and a rotor in which three or more permanent magnets are embedded per pole in the rotor core, and the permanent magnet is embedded in the rotor core
  • the magnet insertion holes are arranged in a substantially U shape toward the outer peripheral surface of the rotor, and a cavity is formed in a side surface portion of the permanent magnet embedded in each of the magnet insertion holes.
  • FIG. 1 is a cross-sectional view of a permanent magnet type electric motor according to a first embodiment of the present invention.
  • FIG. 2 is a schematic cross-sectional view showing the structure of the rotor shown in FIG.
  • FIG. 3 is a partially enlarged view when a permanent magnet is not inserted.
  • FIG. 4 is a partially enlarged view when a permanent magnet is inserted.
  • FIG. 5 is a diagram for explaining the influence of the leakage flux of the permanent magnet.
  • FIG. 6 is a diagram illustrating a conventional example as a comparison target.
  • FIG. 7 is a diagram comparing the maximum stress generated in the magnet insertion hole between the prior art and the first embodiment.
  • FIG. 8 is a schematic cross-sectional view showing the structure of the rotor core according to the second embodiment of the present invention.
  • FIG. 9 is a schematic cross-sectional view showing the structure of the rotor core according to the third embodiment of the present invention.
  • FIG. 10 is a partial enlarged view of the magnet insertion hole shown in FIG. 9 and a diagram for explaining the effect of the third embodiment.
  • FIG. 11 is a schematic cross-sectional view showing the structure of the rotor core according to the fourth embodiment of the present invention.
  • FIG. 12 is a diagram showing a modification of the configuration shown in FIG.
  • FIG. 13 is a schematic cross section which shows the structure of the rotor core concerning Embodiment 5 of this invention.
  • FIG. 14 is a diagram comparing the maximum stress generated in the magnet insertion hole between the first embodiment and the fifth embodiment.
  • FIG. 15 is a diagram showing a modification of the configuration shown in FIG. FIG.
  • FIG. 16 is a diagram showing another modification of the configuration shown in FIG.
  • FIG. 17 is a schematic cross-sectional view showing the structure of the rotor core according to the sixth embodiment of the present invention.
  • FIG. 18 is a schematic cross-sectional view showing the structure of the rotor core according to the seventh embodiment of the present invention.
  • FIG. 19 is a schematic cross-sectional view showing the structure of the rotor core according to the eighth embodiment of the present invention.
  • FIG. 20 is a cross-sectional view in the axial direction of a permanent magnet on both sides of the permanent magnet according to the ninth embodiment of the present invention.
  • FIG. 21 is a sectional view in the axial direction of a permanent magnet on the center side among the permanent magnets according to the ninth embodiment of the present invention.
  • FIG. 1 is a cross-sectional view of a permanent magnet type electric motor that is an example of a permanent magnet type rotating electrical machine according to a first embodiment of the present invention
  • FIG. 2 shows the structure of a rotor in the permanent magnet type electric motor shown in FIG. It is a schematic cross section shown.
  • 3 and 4 are enlarged views of a portion indicated by a broken line in the rotor of FIG. 2
  • FIG. 3 is a partially enlarged view when a permanent magnet is not inserted
  • the permanent magnet type electric motor 1 includes a stator 2 and a rotor 5.
  • the stator 2 includes a stator core 3 having a cylindrical shape, and a stator coil 4 disposed so as to be wound around the stator core 3.
  • the stator core 3 is formed with slots 3a by intermittently forming teeth 3b on the inner peripheral side thereof, and the stator coil 4 has a conductor wire wound around the teeth 3b accommodated in each of the slots 3a. To be arranged.
  • the rotor 5 is produced by, for example, laminating and integrating a predetermined number of magnetic steel plates, the outer peripheral surface forms a cylindrical surface, and 18 magnet insertion holes 7 (see FIGS. 2 and 3) are arranged at an equiangular pitch.
  • magnet insertion holes 7 there are two magnet insertion holes 7a and 7c at both ends of one magnet insertion hole 7b. Further, six sets 7a to 7c of the magnet insertion holes 7 are arranged in a substantially U shape toward the outer peripheral surface of the rotor 5, as shown in FIG.
  • the permanent magnets 16 a to 16 c of the second set of permanent magnets are magnetized in a direction in which the direction of magnetic flux extends concentrically toward the center of the rotor 5.
  • the permanent magnet group magnetized in such a direction that the direction of the magnetic flux by the permanent magnet converges toward the outer peripheral surface of the rotor, and the center of the rotor Permanent magnet groups magnetized in a direction concentrically extending toward the part are arranged alternately.
  • the reason why the direction of magnetization by the permanent magnet group is configured as described above is to make the induced voltage of the stator coil sinusoidal, and in applications that do not require the induced voltage of the stator coil to be sinusoidal. This is not the case. That is, the magnetization directions of the permanent magnet groups magnetized in the direction toward the outer peripheral surface of the rotor or in the direction toward the center of the rotor may be parallel.
  • cavities 9 as shown in FIG. 4 (cavities 9a1 and 9a2 on both side surfaces of the permanent magnet 8a and permanent magnets 8b). Cavities 9b1 and 9b2 are formed on both side surface portions, and cavity portions 9c1 and 9c2) are formed on both side surface portions of the permanent magnet 8c. The effect of the hollow portion 9 will be described later.
  • 36 slots 3a are arranged at equiangular pitches in the circumferential direction of the stator 2, and 6-pole motors (1) in which 18 permanent magnets 8 are embedded in the circumferential direction of the rotor 5.
  • 6 slots per pole and 3 permanent magnets per pole) are shown as an example, but the number of poles of the motor, the number of slots, the number of permanent magnets, etc. are not limited to the configuration of FIG. Any number of selections are possible.
  • FIG. 5 is a diagram for explaining the influence of the leakage magnetic flux of the permanent magnet 8.
  • the magnetic flux generated by the permanent magnets 8a to 8c returns to the rotor core 6 again (not shown) after passing through the core back portion 15 (see FIG. 1) of the stator core 3.
  • a part of the magnetic flux does not go to the core back portion 15 but stays in the rotor core 6 and returns to the permanent magnet 8 as a loop.
  • There is a leakage flux 12 that becomes The leakage magnetic flux 12 does not contribute to torque and causes an increase in iron loss, so it is preferable to suppress it as much as possible.
  • the cavity portion on both sides of the magnet insertion hole 7 is more than the cavity other than both sides. I try to get bigger.
  • the hollow portions 9b1 and 9b2 generated by embedding the permanent magnet 8b in the magnet insertion hole 7b are approximately equal in size, and the hollow portion generated by embedding the permanent magnet 8a in the magnet insertion hole 7a.
  • the magnet insertion hole 7a is formed so that the hollow portion 9a1 is larger, and the hollow portions 9c1 and 9c2 generated by embedding the permanent magnet 8c in the magnet insertion hole 7c are the same as the hollow portion 9c2.
  • the magnet insertion hole 7c is formed so as to be larger.
  • the cavity portion (for example, the cavity portion 9a1) formed on the outer peripheral side of the rotor core 6 is the cavity portion (for example, the cavity portions 9a2 and 9b1) formed on the center side of the rotor core 6.
  • the shape of the magnet insertion hole 7 is formed to be a larger space.
  • the leakage magnetic flux 12 due to the permanent magnet 8 is generated by the bridge portion 10a formed between the permanent magnets 8a and 8b and the bridge portion formed between the permanent magnets 8b and 8c.
  • 10b and the bridge portions 11a and 11b respectively formed between the permanent magnets 8a and 8c and the outer peripheral surface of the rotor core 6 serve as magnetic flux paths. Therefore, it is possible to reduce the leakage flux by narrowing these magnetic flux paths.
  • the bridge portions 10a, 10b and 11a, 11b are traded off with the centrifugal force intensity.
  • the number of permanent magnets is divided into three to reduce the weight of each permanent magnet, and the three permanent magnets have a curvature as shown in the figure.
  • the bridge portions 10a, 10b and 11a, 11b can be made thinner than the conventional configuration, and the leakage magnetic flux passing through these bridge portions can be reduced. Reduction is possible.
  • FIG. 7 is a diagram showing the maximum stress generated in the magnet insertion hole in comparison with the conventional example and the first embodiment.
  • the conventional example is a value obtained by simulation of the maximum stress generated in the magnet insertion hole of the rotor disclosed in Patent Document 1.
  • the arrangement configuration of the permanent magnets in Patent Document 1 is as shown in FIG. 6, and the permanent magnets 108 are arranged in a substantially V shape in the rotor core 106.
  • the maximum stress of the conventional example is “1”
  • the maximum stress of the first embodiment is 0.55, which is 45% lower than the conventional example. Therefore, according to the rotor of the first embodiment, it is possible to effectively suppress the generation of leakage magnetic flux while maintaining the strength against centrifugal force.
  • the rotor of the first embodiment it is possible to further reduce the thickness under a condition where the strength against the centrifugal force is constant, so that the leakage magnetic flux can be further reduced.
  • FIG. FIG. 8 is a schematic cross-sectional view showing the structure of the rotor core according to the second embodiment of the present invention.
  • the permanent magnet 8 embedded in the magnet insertion hole 7 is exemplified by a substantially rectangular shape as shown in FIG. 4, for example, but the permanent magnet 8 of the second embodiment is as shown in FIG.
  • the corners on the outer peripheral surface side of the permanent magnets 8a ′ and 8c ′ located on both ends are chamfered.
  • the magnetic flux 13 flowing from a stator is linked to the permanent magnet 8 (in FIG. 8, the permanent magnet 8a ′) located on the outermost peripheral side of the rotor core 6.
  • the interlinkage magnetic flux 13 is in a direction opposite to the magnetization direction of the permanent magnet 8a ', so that the permanent magnet 8 is demagnetized and the torque is reduced.
  • the contribution to the rotor torque at the corner of the permanent magnet 8a ' is small. Therefore, if the corners of the permanent magnet 8 located on the outermost peripheral side of the rotor core 6 are chamfered, it is possible to effectively reduce the weight of the permanent magnet while suppressing a decrease in the rotor torque. Become.
  • the corners of the permanent magnet 8 positioned on the outermost peripheral side of the rotor core 6 are chamfered, and the magnet insertion hole 7 for inserting the permanent magnet 8 is described in the first embodiment. Therefore, the effect of the first embodiment for reducing the leakage magnetic flux can be maintained.
  • FIG. 9 is a schematic cross-sectional view showing the structure of the rotor core according to the third embodiment of the present invention.
  • FIG. 10 is a partially enlarged view of the magnet insertion hole shown in FIG. 9 and the effects of the third embodiment. It is a figure explaining.
  • the surface of the contact surface 14 which is a part of the contact surface with the permanent magnet 8 in the magnet insertion hole 7 is roughened. With such a structure of the contact surface 14, a frictional holding force against the centrifugal force generated in the permanent magnet 8 is obtained by the frictional force obtained by the contact between the permanent magnet 8 embedded in the magnet insertion hole 7 and the contact surface 14. And the permanent magnet can be easily held.
  • FIG. 11 is a schematic cross-sectional view showing the structure of the rotor core according to the fourth embodiment of the present invention.
  • the permanent magnet 8 embedded in the magnet insertion hole 7 is exemplified by a substantially rectangular shape as shown in FIG. 4, for example, but in the fourth embodiment, as shown in FIG.
  • a substantially trapezoidal one is used as the permanent magnet 8d located at the center.
  • the approximate trapezoidal shape here means that the contact surface of the permanent magnet 8 with the magnet insertion hole 7 is tapered so that the center portion side is wider than the outer peripheral portion side. .
  • centrifugal force increases when rotating at high speed or when the outer diameter of the rotor is large. For this reason, it is desired to increase the holding force of the central permanent magnet in which the influence of the centrifugal force appears most. Therefore, as shown in FIG. 11, if the shape of the permanent magnet 8d located at the center is a substantially trapezoidal shape, the permanent magnet 8d is embedded in the magnet insertion hole 7 in a wedge shape and resists centrifugal force. A force can be obtained by the structure of the rotor core 6 and the permanent magnet can be easily held.
  • the permanent magnets 8f and 8g at both ends are also substantially trapezoidal.
  • a bridge portion formed between the permanent magnets and a bridge formed between the permanent magnets at both ends and the outer peripheral surface of the rotor core 6 are formed.
  • the strength against centrifugal force at the portion can be improved.
  • the area (volume) of both the bridge portions can be further reduced, and the leakage flux and iron loss can be further reduced.
  • FIG. FIG. 13 is a schematic cross section which shows the structure of the rotor core concerning Embodiment 5 of this invention.
  • the configuration of the rotor core having three permanent magnets per pole as shown in FIG. 4 is exemplified.
  • the rotor core of the fifth embodiment as shown in FIG.
  • FIG. 14 is a diagram comparing the maximum stress generated in the magnet insertion hole between the first embodiment and the fifth embodiment.
  • the conventional example and the first embodiment are the same as those shown in FIG.
  • the maximum stress of the conventional example is “1”
  • the maximum stress of the fifth embodiment is 0.45, which is 55% lower than the conventional example. Even if compared with the first embodiment, there is a reduction effect of slightly less than 20% (1 ⁇ (0.45 / 0.55) ⁇ 0.19). Therefore, according to the rotor of the fifth embodiment, it is possible to obtain a further suppression effect of leakage magnetic flux generation while maintaining the strength against centrifugal force.
  • the permanent magnets 8h and 8i obtained by dividing the permanent magnet located in the central portion into two are illustrated as having a substantially rectangular shape as shown in FIG. 13, but FIG. 15 shows the permanent magnets 8j and 8k.
  • the contact surface on the permanent magnet side located at both ends may be a substantially trapezoidal shape with a tapered shape, or the other contact surface may have a substantially trapezoidal shape with a tapered shape as shown in FIG. Absent.
  • the permanent magnets 8a and 8c positioned at both ends are illustrated as having a substantially rectangular shape as shown in FIG. 13, but as shown as permanent magnets 8l and 8m in FIG.
  • the permanent magnet positioned at the position may be substantially trapezoidal.
  • the configuration of the rotor core having four permanent magnets per pole obtained by dividing the permanent magnet located in the central portion into two parts is illustrated.
  • the size of the permanent magnets located at both end portions is changed. Of course, it is possible.
  • the configuration of the rotor core having four permanent magnets per pole is exemplified, but it is of course possible to have a configuration having five or more permanent magnets per pole.
  • FIG. 17 is a schematic cross-sectional view showing the structure of the rotor core according to the sixth embodiment of the present invention.
  • the magnet insertion holes 7a to 7c as shown in FIGS. 3 and 4, for example, when the permanent magnets 8a to 8c are inserted into the respective magnet insertion holes 7a to 7c, 2 Magnet insertion holes (magnet insertion holes 7b in the examples of FIGS. 3 and 4) located not only on both side surfaces of the magnet insertion holes (magnet insertion holes 7a and 7c in the examples of FIGS. 3 and 4) but also in the center. The thing which a cavity part is formed also in both the side surface parts of was illustrated.
  • the sixth embodiment as shown in FIG. 17, an example in which cavities are formed only on both side surfaces of two magnet insertion holes 7 a and 7 c located at both ends is illustrated.
  • An example was given (see FIG. 11).
  • the cavity is formed only on both side surfaces of the two magnet insertion holes 7a and 7c located at both ends, and the magnet insertion hole 7b located at the center.
  • a configuration is adopted in which no hollow portion is formed on both side surface portions.
  • the contact area between the permanent magnet and the magnet insertion hole is increased, so that the effect of increasing the permanent magnet holding force can be obtained.
  • the bridge portion 10a formed between the permanent magnets 8a and 8b and the bridge portion 10b formed between the permanent magnets 8b and 8c are widened, and the leakage magnetic flux passing between the bridge portions 10a and 10b is increased.
  • the hollow portions 9 a 2 and 9 c 1 formed on the side surface portion on the center side are shown in FIG. Since the width of the bridge portions 10a and 10b can be reduced if it is formed larger than that of the above, the increase in leakage magnetic flux can be suppressed.
  • FIG. FIG. 18 is a schematic cross-sectional view showing the structure of the rotor core according to the seventh embodiment of the present invention.
  • a spacer 21a is provided between the magnet insertion holes 7a and 7c located at both ends and the permanent magnets 8a and 8c inserted into the magnet insertion holes 7a and 7c. , 21c are provided and held.
  • the spacers 21a and 21c are preferably non-magnetic materials in order to reduce the influence of the magnetic field on the rotor core.
  • Embodiments 4 and 6 it has been explained that the influence of centrifugal force appears more in the permanent magnet located in the center than in the permanent magnet located at both ends.
  • the permanent magnets 8a which are permanent magnets at both ends.
  • the difference between the magnetization direction (the direction orthogonal to the longitudinal direction of the magnet) and the direction of the centrifugal force becomes large, and a lateral (longitudinal) force acts on the permanent magnets 8a and 8c.
  • the permanent magnet 8b which is a permanent magnet at the center, the magnetization direction and the direction of the centrifugal force substantially coincide with each other, and therefore the lateral force acting on the permanent magnet 8b is small.
  • FIG. 19 is a schematic cross-sectional view showing the structure of the rotor core according to the eighth embodiment of the present invention.
  • the unidirectional arrow lines attached to the permanent magnets 8a to 8c indicate the respective magnetization directions, and the thickness 31b in the magnetization direction of the permanent magnet 8b at the center is on both side surfaces.
  • the permanent magnets 8a and 8c are smaller (thinner) than the thicknesses 31a and 31c in the magnetization direction.
  • the magnetic flux (not shown) from the stator 2 is large, the magnetic flux is linked to the end of the permanent magnet on the side surface close to the rotor surface.
  • the smaller the thickness of the permanent magnet in the magnetizing direction the smaller the magnetic resistance of the magnetic flux from the stator, so the permanent magnet is likely to be demagnetized.
  • the magnetic flux from the stator 2 is difficult to reach. For this reason, the permanent magnet 9b in the central portion is not easily demagnetized, and the thickness of the permanent magnet 9b in the magnetization direction can be reduced (thinned).
  • FIG. 20 and 21 are axial sectional views of the permanent magnet according to the ninth embodiment of the present invention
  • FIG. 20 shows a sectional structure in the rotor axial direction of the permanent magnets 8a and 8c on both side surfaces
  • FIG. 21 shows a cross-sectional structure of the permanent magnet 8b on the center side in the rotor axis direction.
  • the number of magnet divisions of the permanent magnets 8a and 8c on both side surfaces is, for example, 10
  • the number of magnet divisions of the permanent magnet 8b on the center side is as shown in FIG. For example, five.
  • This difference is related to the eddy current loss of the permanent magnet, and is because the eddy current loss of the permanent magnet is reduced by increasing the number of magnet divisions.
  • the eddy current loss of the permanent magnet generated by the stator magnetic flux is larger in the permanent magnets 8a and 8c close to the rotor surface, so that it is necessary to increase the number of magnet divisions, but the permanent magnet 8b.
  • the permanent magnet 8b arranged at a position far from the rotor surface as described above the magnet eddy current loss due to the stator magnetic flux is reduced, so that the number of magnet divisions can be reduced and the cost can be reduced.
  • the magnet shape of the permanent magnet 8a (8) and the magnet shape of the permanent magnet 8b are different as shown in FIG. If a permanent magnet with a small number of magnet divisions is inserted on both side surfaces, eddy current loss may increase. On the other hand, as shown in FIG. 19, when the sizes of the permanent magnet 8a (8c) and the permanent magnet 8b are made different from each other, there is no possibility of inserting them by mistake, so that the yield can be improved. effective.
  • the present invention is useful as a permanent magnet type rotating electrical machine that effectively suppresses generation of leakage magnetic flux while maintaining strength against centrifugal force, and a rotor thereof.

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  • Permanent Field Magnets Of Synchronous Machinery (AREA)

Abstract

L’invention concerne une machine électrique rotative du type à aimants permanents dont il est possible de supprimer efficacement le flux magnétique de fuite et de maintenir l’intensité de la force centrifuge. La machine électrique comprend un rotor (5) incorporant trois aimants permanents (8a à 8c) associés à un pôle unique à l’intérieur d’un noyau (6) de rotor. Le rotor (5) est monté rotatif sur un stator comprenant une bobine de stator reçue à l’intérieur d’une encoche, et séparé du stator par un entrefer de rotation. Des trous d’insertion d’aimant dans lesquels se logent les aimants permanents (8a à 8c) sont ménagés dans le noyau (6) de rotor en position adjacente les uns aux autres et en formation sensiblement en U orientée vers la surface périphérique extérieure du rotor (5). Des cavités (9a1, 9a2, 9b1, 9b2, 9c1 et 9c2) sont ménagées au niveau des faces latérales des aimants permanents (8a to 8c) logés dans les trous d’insertion d’aimant.
PCT/JP2010/061206 2009-07-03 2010-06-30 Machine électrique rotative du type à aimants permanents WO2011002043A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2010800299189A CN102474142A (zh) 2009-07-03 2010-06-30 永久磁铁型旋转电机
JP2011520971A JPWO2011002043A1 (ja) 2009-07-03 2010-06-30 永久磁石型回転電機

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/JP2009/062207 WO2011001533A1 (fr) 2009-07-03 2009-07-03 Machine électrique rotative à aimant permanent
JPPCT/JP2009/062207 2009-07-03

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WO2011002043A1 true WO2011002043A1 (fr) 2011-01-06

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PCT/JP2010/061206 WO2011002043A1 (fr) 2009-07-03 2010-06-30 Machine électrique rotative du type à aimants permanents

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JP2014204599A (ja) * 2013-04-08 2014-10-27 株式会社東芝 モータ
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JP2017005857A (ja) * 2015-06-10 2017-01-05 株式会社デンソー ロータ
US20190089212A1 (en) * 2017-09-15 2019-03-21 Ford Global Technologies, Llc Rotor with nonmagnetic insert
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WO2021210249A1 (fr) * 2020-04-15 2021-10-21 パナソニックＩｐマネジメント株式会社 Rotor et moteur électrique
TWI812289B (zh) * 2022-06-16 2023-08-11 大銀微系統股份有限公司 高頻旋轉機構之改良構造

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US20140091663A1 (en) * 2011-05-16 2014-04-03 Mitsubishi Electric Corporation Permanent-magnet type rotating electrical machine
FR2995469B1 (fr) * 2012-09-13 2017-04-21 Moteurs Leroy-Somer Rotor de machine electrique tournante, comportant une masse rotorique dans laquelle sont menages des logements.
CN203219035U (zh) * 2012-12-10 2013-09-25 艾默生环境优化技术(苏州)有限公司 转子组件和包括该转子组件的永磁体电机
JP5714189B2 (ja) * 2013-01-23 2015-05-07 三菱電機株式会社 回転子およびその回転子を備えた回転電機
FR3002091B1 (fr) * 2013-02-14 2016-07-15 Moteurs Leroy-Somer Machine electrique tournante.
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CN103269136A (zh) * 2013-03-25 2013-08-28 杭州德沃仕电动科技有限公司 电机
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