WO2012008012A1 - Machine électrique rotative du type à aimant permanent - Google Patents

Machine électrique rotative du type à aimant permanent Download PDF

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Publication number
WO2012008012A1
WO2012008012A1 PCT/JP2010/061799 JP2010061799W WO2012008012A1 WO 2012008012 A1 WO2012008012 A1 WO 2012008012A1 JP 2010061799 W JP2010061799 W JP 2010061799W WO 2012008012 A1 WO2012008012 A1 WO 2012008012A1
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WO
WIPO (PCT)
Prior art keywords
rotor
stator
permanent magnets
rotor core
permanent magnet
Prior art date
Application number
PCT/JP2010/061799
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English (en)
Japanese (ja)
Inventor
盛幸 枦山
健太 金子
井上　正哉
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.)
Filing date
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 JP2012524355A priority Critical patent/JP5383915B2/ja
Priority to PCT/JP2010/061799 priority patent/WO2012008012A1/fr
Publication of WO2012008012A1 publication Critical patent/WO2012008012A1/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
    • 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 invention relates to a rotating electric machine such as a vehicle electric motor, and more particularly to a rotor structure of a rotating electric machine in which a permanent magnet is disposed inside the rotor.
  • a permanent magnet motor using a permanent magnet has been used as a means for generating a magnetic field of a rotor. Since the centrifugal force at the time of high-speed rotation of the rotor of the permanent magnet type motor acts on the permanent magnet, the magnet embedded structure having a magnet holding structure in which the permanent magnet is embedded in the rotor to improve the centrifugal force resistance.
  • a built-in motor (Interior Permanent Magnet Motor: hereinafter referred to as “IPM motor”) has been proposed (for example, Patent Document 1 below).
  • 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 can reduce a no-load induced voltage while maintaining strength against centrifugal force.
  • Another object of the present invention is to provide a permanent magnet type rotating electrical machine that can suppress a decrease in driving torque.
  • a permanent magnet type rotating electrical machine includes a stator having a plurality of slots for accommodating a stator coil in a slot, and a rotating gap in the stator.
  • a rotor core disposed rotatably through the rotor core, and a rotor in which three or more permanent magnets are embedded per pole in the rotor core, and the rotor core has the permanent core Magnet insertion holes for embedding magnets are arranged in a generally U shape toward the outer peripheral surface of the rotor, and a cavity is formed on the side surface of the permanent magnet embedded in each magnet insertion hole, and the rotation
  • a pair of holes having a symmetrical shape with respect to the center line between the magnetic poles is provided for each magnetic pole, and the number of pole pairs of the permanent magnet is p, and the number of pole pairs p is 3 or more.
  • the stator slot taking an integer multiple Where m is a pair of holes, the (m / p-1) order harmonic component and the (m / p + 1) order harmonic component of the no-load induced voltage generated in the stator by the rotation of the rotor. It is characterized in that it is provided at a position where the sum of amplitudes with the component is minimized or in the vicinity thereof.
  • 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 the first embodiment.
  • FIG. 2 is a schematic cross-sectional view showing the structure of the rotor in the permanent magnet type electric motor shown in FIG.
  • FIG. 3 is an enlarged view of a portion indicated by a broken line in the rotor of FIG.
  • FIG. 4 is an enlarged view of a portion corresponding to FIG. 3 when a permanent magnet is inserted.
  • FIG. 5 is a partially enlarged view in which a peripheral portion of the magnet insertion hole shown in FIG. 3 is enlarged.
  • FIG. 6 is a diagram for explaining the influence of leakage magnetic flux in the first embodiment.
  • 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 the first embodiment.
  • FIG. 2 is a schematic cross-sectional view showing the structure of the rotor in the permanent magnet type electric motor shown
  • FIG. 7 is a diagram for explaining the influence of leakage magnetic flux in a conventional example as a comparative example.
  • FIG. 8 is a graph showing a simulation result regarding the sum of amplitudes of the (n ⁇ 1) th order harmonic component and the (n + 1) th order harmonic component of the no-load induced voltage that changes according to the position of the hole.
  • FIG. 9 is a diagram for explaining the electrical angle representing the position of the hole.
  • FIG. 10 is a schematic cross-sectional view illustrating a part of the structure of the rotor of the permanent magnet type rotating electric machine according to the third embodiment.
  • 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.
  • FIG. 3 is an enlarged view of a portion indicated by a broken line portion in the rotor of FIG. 2
  • FIG. 4 is an enlarged view of a portion corresponding to FIG. 3 when a permanent magnet is inserted.
  • 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.
  • FIG. 3 is an enlarged view of a portion indicated by a broken line portion in the rotor of FIG. 2
  • FIG. 4 is an enlarged view of a portion corresponding to FIG. 3 when a permanent magnet is inserted.
  • the permanent magnet type electric motor 1 includes a stator 2 and a rotor 5.
  • the stator 2 has a stator core 3 having a cylindrical shape, and this stator core 3 is formed by forming 36 teeth 3b at an equal pitch and intermittently on the inner peripheral side thereof. 36 slots 3a are formed. In the slot 3a, the stator coil 4 is wound and stored so as to include a predetermined number of teeth 3b therein.
  • 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.
  • the magnet insertion hole 7 has two magnet insertion holes 7 a and 7 c at both ends of one magnet insertion hole 7 b, and is arranged on the outer circumferential surface (outer circumferential direction) of the rotor 5.
  • Six sets are arranged in a generally U shape so as to open toward the front. Then, while the direction of the magnetic flux by the permanent magnets 8a to 8c, which is a set of the first permanent magnets, is magnetized (magnetized) in a direction to converge toward the outer peripheral surface of the rotor 5, an adjacent set (second set)
  • the permanent magnets 16a to 16c of the permanent magnets are magnetized in such a direction that the direction of the magnetic flux spreads toward the center of the rotor 5.
  • the permanent magnet group magnetized in the direction in which the direction of the magnetic flux by the permanent magnet converges toward the outer peripheral surface of the rotor, and the central portion of the rotor Permanent magnet groups that are magnetized in a direction that spreads out are arranged alternately.
  • 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.
  • holes 20 (20a, 20b) are provided in the periphery of the magnet insertion holes 7a, 7c located at both ends so as to reduce the no-load induced voltage. .
  • the electric motor (3) (six slots per pole and three permanent magnets per pole) is shown as an example, but the number of poles of the motor, the number of slots, the number of permanent magnets, etc. It is not limited and any number of selections are possible.
  • 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 where the induced voltage of the stator coil does not need 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.
  • FIG. 5 is a partially enlarged view in which a peripheral portion of the magnet insertion hole shown in FIG. 3 is enlarged.
  • FIG. 5 shows a center line 30a between the magnetic poles that passes through the center of the rotor core 6 and is equidistant from one permanent magnet group and another permanent magnet group.
  • the hole 20a is provided on the right side of the paper with respect to the bridge portion 11a formed between the magnet insertion hole 7a and the outer peripheral end of the rotor core 6, that is, on the opposite side of the center line 30a between the magnetic poles with respect to the bridge portion 11a. Yes.
  • the position of the hole 20a has a preferable position from a mechanical viewpoint and an electrical viewpoint.
  • the mechanical viewpoint is a viewpoint of centrifugal force strength
  • the electrical viewpoint is a viewpoint regarding leakage flux and no-load induced voltage.
  • the example shown in FIG. 5 is an example in the case where it is provided closer to the center portion than the curve 24a that passes through the end portion 28a closest to the outer peripheral portion of the magnet insertion hole 7a and is virtually drawn to the outer peripheral end of the rotor core 6. And is one of the preferred embodiments.
  • the magnet insertion hole 7a is usually designed in consideration of the strength of centrifugal force, and the diameter of the hole 20a is, for example, a ⁇ ⁇ kW class motor of about XX mm. It is very small compared to the size of the hole 7a. For this reason, as long as the magnet insertion hole 7a is arranged closer to the center than the curve 24a, the problem of reduced centrifugal force strength does not occur.
  • a margin in the centrifugal force strength it is needless to say that a part or all of the hole 20a may be located on the outer peripheral side from the curve 24a according to the margin of the centrifugal force strength. .
  • FIGS. 6 and 7 are diagrams for explaining a problem related to the leakage magnetic flux from the electrical viewpoint mentioned above, and FIG. 6 is a diagram for explaining the influence of the leakage magnetic flux in the first embodiment.
  • FIG. 7 is a diagram for explaining the influence of leakage magnetic flux in a conventional example as a comparative example.
  • 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 stays inside the rotor core 6 so as to return to the permanent magnet 8 without going to the core back portion 15, and in the rotor core 6, a loop and 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 side surface portions of the magnet insertion hole 7 is more than the cavity portion other than both side surface portions. Also 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 (for example, the cavity 9a1) formed on the outer peripheral side of the rotor core 6 is formed on the center side of the rotor core 6.
  • the shape of the magnet insertion hole 7 is formed so as to be a larger space than the hollow portions (for example, the hollow portions 9a2, 9b1,).
  • 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 12 by narrowing these magnetic flux paths.
  • 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 thickness of the bridge portions 11a and 11b can be reduced compared to the conventional configuration, and the leakage magnetic flux passing through these bridge portions can be reduced.
  • FIG. 7 shows a portion corresponding to FIG. 6 of the rotor core disclosed in Patent Document 1, and in this rotor core 106, permanent magnets 108a and 108b, which are a set of permanent magnets, are arranged on the outer peripheral surface. It arrange
  • the rotor core disclosed in Patent Document 1 is a set of two permanent magnets, in order to obtain the same field force, one piece is used rather than that in the first embodiment. The weight per hit increases.
  • the groove 120 is provided on the outer peripheral surface of the rotor core 106, the centrifugal force strength is smaller than that of the rotor core 6 of the first embodiment.
  • the positions of the permanent magnets 108a and 108b in the rotor core of Patent Document 1 need to be provided closer to the center than in the first embodiment.
  • the leakage magnetic flux 112 staying inside the rotor core 106 without returning to the opposing stator core 106 and returning to itself becomes larger than the leakage magnetic flux 12 according to the present embodiment as shown in FIG.
  • the leakage magnetic flux 112 is increased, the rotational torque is reduced and the iron loss is also increased. Therefore, the adverse effect caused by providing the groove 120 on the outer peripheral surface of the rotor core 106 is also increased.
  • FIG. 8 shows the (n ⁇ 1) -order harmonic component (the 11th-order harmonic component in the example of FIG. 8) and the (n + 1) -order harmonic component of the no-load induced voltage that changes according to the position of the hole 20a. It is a graph which shows the simulation result regarding the amplitude sum with (in the example of FIG. 8 13th harmonic component).
  • FIG. 8 also shows the fundamental wave component of the no-load induced voltage that is largely related to the torque (magnet torque) generated by the permanent magnets 8a to 8c.
  • the angle ⁇ shown on the horizontal axis represents the position of the hole 20a with the center line 30a between the magnetic poles as a reference axis in electrical angle (see FIG. 9).
  • FIG. 9 shows the adjacent magnetic pole center line 30b
  • the electrical angle between the magnetic pole center lines 30a and 30b is 180 degrees
  • the center line between the magnetic poles is located at the symmetrical position of the hole 20a. Since the hole 20b having 30b as a reference axis is provided, the range of the electrical angle ⁇ related to the hole 20a is in the range of 0 to 90 °.
  • the torque (reluctance torque) generated by the magnetic flux generated between the steel portion on the surface of the rotor core 6 and the stator coil is reduced by the gap formed by the hole 20a. Therefore, in order to suppress the no-load induced voltage without impairing the reluctance torque, the electrical angle ⁇ representing the position of the hole 20a needs to satisfy ⁇ > A as shown in FIG.
  • this A is the position closest to the outer peripheral side end of the rotor core 6 and is based on the center line 30a between the magnetic poles of the end 28a that is farthest from the center line 30a between the magnetic poles. Is an electrical angle. Therefore, in the example of FIG. 8, the preferred position of the hole 20a is the electrical angle ⁇ 2, ⁇ 3 or an electrical angle position in the vicinity thereof.
  • the hole 20b is provided at a symmetrical position of the hole 20a with the center line 30b between the magnetic poles as a reference axis. Therefore, for example, when the hole 20a is provided at or near the electrical angle ⁇ 2 with respect to the center line 30a between the magnetic poles, the hole 20b is formed at the electrical angle ⁇ 2 with reference to the center line 30b between the magnetic poles or in the vicinity thereof. When the hole 20a is provided at or near the electrical angle ⁇ 3 with respect to the center line 30a between the magnetic poles, the hole 20b is formed at the electrical angle ⁇ 3 with reference to the center line 30b between the magnetic poles or in the vicinity thereof. Will be provided.
  • the holes 20a and 20b are between the permanent magnets 8a to 8c (permanent magnet group) arranged in a substantially U shape and the outer peripheral portion of the rotor core 6, and the number of pole pairs of the permanent magnets is determined.
  • p is the number of slots in the stator and m is the position where the sum of amplitudes of the (m / p-1) order harmonic component and the (m / p + 1) order harmonic component of the no-load induced voltage is minimized Or it arrange
  • the value of m / p takes an integer value of 3 or more, and this value never becomes a real number.
  • the above-described arrangement positions related to the holes 20a and 20b are arrangement positions for suppressing the no-load induced voltage without impairing the reluctance torque. Therefore, in applications where the reluctance torque may be sacrificed to some extent, the position where the no-load induced voltage is minimized or in the vicinity thereof is the position outside the permanent magnet group arranged in a generally U shape. It doesn't matter.
  • the permanent magnet type rotating electrical machine of the first embodiment when providing a pair of symmetrical holes with respect to the center line between the magnetic poles for each magnetic pole, the vicinity of the outer peripheral portion of the rotor core And the (m / p-1) order harmonic component and the (m / p + 1) order harmonic component of the no-load induced voltage when the number of pole pairs of the permanent magnet is p and the number of slots of the stator is m Since it is provided at a position where the amplitude sum with the component is minimized or in the vicinity thereof, it is possible to reduce the no-load induced voltage while maintaining the strength against the centrifugal force.
  • the stator core 3 and the rotor core 6 are manufactured, first, the magnetic steel plate constituting the stator core 3 is first punched, and then the rotor core 6 is manufactured using the remaining portion. It is. In this case, after the magnetic steel plates constituting the rotor core 6 are fixed and integrated, an operation of cutting the rotor end face is required to form the rotation gap 18 (see FIG. 1). Therefore, when forming a groove
  • the permanent magnet type rotating electric machine according to the first embodiment, between the permanent magnet group in which the positions of the pair of holes provided on the rotor core are arranged in a substantially U shape and the outer peripheral portion of the rotor core By doing so, the influence of a decrease in reluctance torque can be reduced, and a decrease in drive torque can be suppressed.
  • the hollow portions 9a1, 9a2, 9b1, 9b2, 9c1, and 9c2 in the holes 20a and 20b and the magnet insertion holes 7a to 7c in which the permanent magnets 8a to 8c are embedded are described as gaps.
  • a nonmagnetic member such as an adhesive may be poured into the gap. By pouring a non-magnetic member such as an adhesive, it becomes possible to hold the permanent magnets 8a to 8c more firmly, and to increase the centrifugal force strength of the rotor core 6.
  • the holes 20a and 20b that can reduce the no-load induced voltage are provided in the vicinity of the outer peripheral portion of the rotor core 6.
  • the holes 20a and 20b may have a caulking structure. Good.
  • the magnetic characteristics of the caulking structure part can be made close to air. Therefore, this is equivalent to the formation of a gap in the caulking structure part and the no-load induced voltage is reduced. Occurrence can be reduced.
  • caulking structure is optional, and a caulking structure in which a hole is formed in the caulking portion may be employed, or a caulking structure in which no hole is formed in the caulking portion may be employed.
  • FIG. FIG. 10 is a schematic cross-sectional view showing a part of the structure of the rotor of the permanent magnet type rotating electric machine according to the third embodiment of the present invention.
  • grooves 32a and 32b are provided on the outer peripheral end of the rotor core 6 in place of the holes 20a and 20b shown in FIG.
  • it is the same as that of Embodiment 1 shown in FIG. 9, or is equivalent, and attaches
  • the positions of the grooves 32a and 32b are the same as in the first embodiment, and the (m / p ⁇ 1) -order harmonic component of the no-load induced voltage that changes according to the position of the groove 32a.
  • the grooves 32a and 32b are preferably rectangular in shape. If the shape of the grooves 32a and 32b is rectangular, it becomes easy to consider the cutting allowance when cutting the rotor end face, and symmetry about the shape of the groove after cutting can be easily obtained.
  • the configurations shown in the above first to third embodiments are examples of the configuration of the present invention, and can be combined with other known techniques, and can be combined within the scope of the present invention. Needless to say, the configuration may be modified by omitting the unit.
  • the configuration of the rotor having three permanent magnets per pole is illustrated, but a rotor having four or more permanent magnets per pole may be configured.
  • 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 is not limited to such a rectangular shape.
  • a trapezoidal shape may be used, and a corner portion on the outer peripheral side of the permanent magnet 8 may be chamfered in accordance with the shape of the outer peripheral portion of the rotor core 6.
  • the permanent magnet type rotating electrical machine according to the present invention is useful as an invention capable of reducing the no-load induced voltage while maintaining the strength against centrifugal force.

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

Abstract

Dans un noyau de fer de rotor (6), des trous d'insertion d'aimant (7a à 7c) permettant de noyer trois aimants permanents par pôle sont agencés sensiblement selon la forme d'un U tourné vers la surface circonférentielle extérieure d'un rotor (5). Une paire de trous (20a, 20b) formés symétriquement par rapport à l'axe central entre les pôles magnétiques sont prévus pour chacun des pôles magnétiques au voisinage de la circonférence extérieure du noyau de fer (6) du rotor. Lorsque le nombre de paires de pôles des pôles magnétiques formés par les aimants permanents est appelé p et lorsque le nombre de fentes d'un stator (3) est appelé m, les deux trous sont disposés aux positions ou à proximité des positions auxquelles la somme des amplitudes des composantes harmoniques d'ordre (m/p-1) et (m/p+1) d'une tension d'induction en l'absence de charge devient minimale.
PCT/JP2010/061799 2010-07-12 2010-07-12 Machine électrique rotative du type à aimant permanent WO2012008012A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2012524355A JP5383915B2 (ja) 2010-07-12 2010-07-12 永久磁石型回転電機
PCT/JP2010/061799 WO2012008012A1 (fr) 2010-07-12 2010-07-12 Machine électrique rotative du type à aimant permanent

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Application Number Priority Date Filing Date Title
PCT/JP2010/061799 WO2012008012A1 (fr) 2010-07-12 2010-07-12 Machine électrique rotative du type à aimant permanent

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WO2012008012A1 true WO2012008012A1 (fr) 2012-01-19

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Cited By (7)

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CN103872819A (zh) * 2012-12-10 2014-06-18 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
CN104321952A (zh) * 2012-05-22 2015-01-28 三菱电机株式会社 永磁体埋入型旋转电机
JP2015192576A (ja) * 2014-03-28 2015-11-02 本田技研工業株式会社 ロータ製造装置およびロータ製造方法
EP3007323A4 (fr) * 2013-05-31 2017-01-25 Kabushiki Kaisha Toshiba Machine électrique rotative dans laquelle est utilisé un aimant permanent
CN108462268A (zh) * 2017-02-22 2018-08-28 本田技研工业株式会社 旋转电机的转子
DE102019002449A1 (de) 2019-04-03 2020-07-09 Daimler Ag Rotorkern für einen Rotor einer elektrischen Maschine, Rotorelement mit einem solchen Rotorkern sowie elektrische Maschine für ein Kraftfahrzeug
WO2021049427A1 (fr) * 2019-09-10 2021-03-18 株式会社デンソー Machine électrique rotative

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CN114651383B (zh) 2019-11-13 2023-08-11 三菱电机株式会社 旋转电机

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JP2010093906A (ja) * 2008-10-06 2010-04-22 Fuji Electric Systems Co Ltd 永久磁石式回転機
JP2010110142A (ja) * 2008-10-31 2010-05-13 Hitachi Industrial Equipment Systems Co Ltd 永久磁石式回転電機及びそれを用いた圧縮機

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JP2001145284A (ja) * 1997-09-29 2001-05-25 Hitachi Ltd 永久磁石回転電機およびそれを用いた電気車両
JP2008220053A (ja) * 2007-03-05 2008-09-18 Toyota Motor Corp 電動機
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Cited By (13)

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Publication number Priority date Publication date Assignee Title
CN104321952A (zh) * 2012-05-22 2015-01-28 三菱电机株式会社 永磁体埋入型旋转电机
US9735631B2 (en) 2012-05-22 2017-08-15 Mitsubishi Electric Corporation Embedded permanent magnet rotary electric machine
CN103872819A (zh) * 2012-12-10 2014-06-18 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
EP3007323A4 (fr) * 2013-05-31 2017-01-25 Kabushiki Kaisha Toshiba Machine électrique rotative dans laquelle est utilisé un aimant permanent
US9780611B2 (en) 2013-05-31 2017-10-03 Kabushiki Kaisha Toshiba Rotary electric machine using permanent magnet
JP2015192576A (ja) * 2014-03-28 2015-11-02 本田技研工業株式会社 ロータ製造装置およびロータ製造方法
CN108462268A (zh) * 2017-02-22 2018-08-28 本田技研工业株式会社 旋转电机的转子
JP2018137924A (ja) * 2017-02-22 2018-08-30 本田技研工業株式会社 回転電機のロータ
US10680475B2 (en) 2017-02-22 2020-06-09 Honda Motor Co., Ltd. Rotor for rotary electric machine
DE102019002449A1 (de) 2019-04-03 2020-07-09 Daimler Ag Rotorkern für einen Rotor einer elektrischen Maschine, Rotorelement mit einem solchen Rotorkern sowie elektrische Maschine für ein Kraftfahrzeug
WO2021049427A1 (fr) * 2019-09-10 2021-03-18 株式会社デンソー Machine électrique rotative
JP2021044915A (ja) * 2019-09-10 2021-03-18 株式会社デンソー 回転電機
JP7327019B2 (ja) 2019-09-10 2023-08-16 株式会社デンソー 回転電機

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