WO2017090074A1 - Machine électrique tournante de type à entrefer axial et stator de machine électrique tournante - Google Patents

Machine électrique tournante de type à entrefer axial et stator de machine électrique tournante Download PDF

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Publication number
WO2017090074A1
WO2017090074A1 PCT/JP2015/082814 JP2015082814W WO2017090074A1 WO 2017090074 A1 WO2017090074 A1 WO 2017090074A1 JP 2015082814 W JP2015082814 W JP 2015082814W WO 2017090074 A1 WO2017090074 A1 WO 2017090074A1
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WO
WIPO (PCT)
Prior art keywords
stator
shielding member
electrical machine
rotating electrical
axial gap
Prior art date
Application number
PCT/JP2015/082814
Other languages
English (en)
Japanese (ja)
Inventor
博洋 床井
高橋　秀一
恭永 米岡
利文 鈴木
健児 鵜澤
山崎　克之
酒井　亨
正木　良三
Original Assignee
株式会社日立産機システム
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 株式会社日立産機システム filed Critical 株式会社日立産機システム
Priority to PCT/JP2015/082814 priority Critical patent/WO2017090074A1/fr
Priority to JP2017552548A priority patent/JP6547006B2/ja
Priority to TW105125340A priority patent/TWI638502B/zh
Publication of WO2017090074A1 publication Critical patent/WO2017090074A1/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
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
    • 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
    • H02K21/24—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets axially facing the armatures, e.g. hub-type cycle dynamos

Definitions

  • the present invention relates to an axial gap type rotating electrical machine and a stator for a rotating electrical machine, and more particularly to a stator for a rotating electrical machine molded with resin and a rotating electrical machine having the stator.
  • Patent Document 1 includes a plurality of stator core members arranged in an annular shape and two rotors arranged so as to sandwich the stator from both sides in the axial direction, and these magnetic flux surfaces face a predetermined gap in the axial direction.
  • An axial gap type rotating electrical machine is disclosed.
  • the opposing area of a stator and a rotor that generate torque (hereinafter sometimes referred to as “gap area”) is proportional to the square of the diameter.
  • Gap area the opposing area of a stator and a rotor that generate torque
  • the rotor can be configured relatively easily, the development of an axial gap type rotating electrical machine using a permanent magnet such as neodymium or ferrite has been promoted.
  • a permanent magnet type rotating electrical machine When a permanent magnet type rotating electrical machine is driven by an inverter, torque is obtained by passing a current synchronized with the magnet position through the winding. At this time, the common mode voltage generated by the inverter is electrostatically coupled to the rotor side, and a voltage (hereinafter referred to as “shaft voltage”) is generated between the inner and outer rings of the bearing. It is known that excessive shaft voltage causes bearing corrosion and reduces the life of the bearing.
  • Axial gap type rotating electrical machines increase the gap area per physique, such as a structure in which two rotors are arranged to sandwich the stator, or a structure in which two stators are arranged to sandwich the rotor. In some cases, it is possible to devise such as generating torque more efficiently. Such a tendency that the facing area between the winding and the rotor expands is due to an increasing tendency of the shaft voltage.
  • the winding is concentrically opposed to the shaft because the shaft is disposed so as to penetrate the center in the radial direction of the stator.
  • the shaft is disposed so as to penetrate the center in the radial direction of the stator.
  • it is effective to densely arrange cores and electric wires in a limited space, that is, increase the space utilization rate. For this reason, the distance between the winding and the shaft is often close, and the influence on the shaft voltage cannot be ignored.
  • FIG. 1 schematically shows one aspect of the resin molding process of the stator.
  • a lower mold 201 having the same diameter as the housing inner diameter is inserted from one inner cylinder side of the housing 50.
  • a plurality of core members X are arranged in an annular shape on the upper surface of the lower mold 201 around the rotation axis.
  • a cylindrical or rod-shaped core 202 is disposed on the axis through which the shaft is inserted.
  • the core material 202 has a diameter such that the outer periphery of the shaft and the stator after molding are not in contact with each other.
  • a cylindrical shielding member X along the outer peripheral shape of the core 202 is disposed between the outer peripheral surface of the core member 202 and the stator winding 220.
  • an upper mold (not shown) having the same diameter as that of the housing 50 is inserted.
  • the upper mold and the lower mold are provided with holes for enclosing the resin on the stator side, and encapsulate the resin with a predetermined pressure.
  • a resin mold stator having a state in which the surface is molded can be obtained while being fixed to the housing 50.
  • the shielding member X is held at the center of the stator, and a shaft voltage can be prevented by electrically connecting a part of the shielding member X and the housing 50 with a conductive plate.
  • a plurality of core members each having a stator core wound with a winding in a circumferential direction are arranged in an annular shape around a rotation axis, and a stator integrally molded with resin, and a magnetic flux surface of the stator
  • An axial gap type rotating electrical machine having a rotor facing through a gap in a rotation axis direction and a rotation shaft that rotates together with the rotor and passes through a rotation axis of the stator, wherein the stator is And having a cylindrical shape along the outer peripheral shape of the rotating shaft, and having a shielding member that electrically shields the winding and the radially opposing portion of the rotating shaft, and the shielding member is the winding And a plurality of communication holes penetrating in the radial direction at a constant density on the entire peripheral surface sandwiched between the radially opposing portions of the rotating shaft, and the area ratio of the plurality of
  • a plurality of core members having a stator core wound with a winding in the circumferential direction are arranged in an annular shape around the rotation axis and fixed integrally with resin.
  • An axial gap type comprising: a rotor; a rotor facing a magnetic flux surface of the stator through a gap in a rotation axis direction; and a rotation axis that rotates together with the rotor and passes through the rotation axis of the stator.
  • a rotating electrical machine wherein the stator has a cylindrical shape extending along an outer peripheral shape of the shaft, and includes a shielding member that electrically shields a radial facing portion between the winding and the rotating shaft.
  • the shielding member is made of a mesh member, and at least a part of the shielding member is filled with the resin from the outer diameter side to the inner diameter side through the mesh of the mesh member.
  • a plurality of core members each having a stator core that is wound in the circumferential direction and generates a magnetic flux in the rotation axis direction are arranged in an annular shape around the rotation axis and molded with resin.
  • a stator for a rotating electrical machine wherein the stator has a through hole into which the rotating shaft is inserted, and a cylindrical shape along the outer peripheral shape of the rotating shaft, and the radial direction of the winding and the rotating shaft
  • a shielding member that electrically shields the facing portion, and the shielding member has a plurality of communication holes penetrating in a radial direction on an entire circumferential surface sandwiched between the winding and the radially facing portion of the rotating shaft.
  • the hole has a constant density, and an area ratio of the plurality of communication holes occupying the entire peripheral surface is larger than an area ratio of a portion other than the plurality of communication holes, and at least a part of the shielding member
  • Serial resin is configured to be filled.
  • FIG. 2 is a sectional view in the axial direction of a motor 100 that is an embodiment to which the present invention is applied.
  • the motor 100 includes one annular stator 10 and two disk-shaped rotors 40 so as to sandwich the stator 10 from the axial direction, and these magnetic flux surfaces pass through a predetermined air gap in the rotational axis direction.
  • a double rotor type axial gap type permanent magnet synchronous motor Opposite to each other, a double rotor type axial gap type permanent magnet synchronous motor.
  • the stator 10 has a configuration in which a plurality of core members 20 are annularly arranged in a radial direction around a shaft 70, and the plurality of core members 20 are integrally molded with a resin 30 in a housing 50.
  • the plurality of core members 20 are formed into an annular body having a through hole into which the rotation shaft 70 is inserted at the center by the molding, and are fixed integrally in the housing.
  • this invention is not limited to the mold in the housing 50, It can replace with this and can apply also to the structure which obtains the resin-molded stator using a shaping
  • FIG. 3 schematically shows a perspective view of the core member 20.
  • the core member 20 includes a core 21, a winding 22 wound around the outer periphery of the core, and a bobbin 23 disposed between them for insulation.
  • the core 21 is a metal core made of laminated steel plate, thick powder, or machined.
  • a columnar core in which amorphous foil strips having a thickness of about 0.1 to 0.3 mm are laminated in the radial direction is used.
  • FIG. 2B shows a perspective view of the bobbin 23.
  • the bobbin 23 is made of an insulating member such as resin and has a cylindrical shape formed along the outer peripheral shape of the core 21.
  • the insulating member can be replaced with insulating paper or an insulating agent applied to the winding, and the present invention is not limited to these examples.
  • the bobbin 23 has the collar part 24 extended
  • the distal end 24 a of the flange portion 24 in the rotational axis direction contacts the shielding member 90, functions as positioning of the core member 20, and has a function of determining the winding limit of the winding 22. That is, since the winding 22 and the shielding member 90 need not be in contact with each other, it is possible to restrict the winding position from the root of the cylindrical portion 25 to the position less than the position 24a in the rotational axis direction.
  • the rotor 40 includes a permanent magnet 41 disposed to face the core 21, a back yoke 42 provided on the back surface of the permanent magnet 41, and a yoke 43 that holds them.
  • the yoke 43 is an annular body having a through hole at the center, and the through hole and the shaft 70 are coupled.
  • the shaft 70 arranges the bearings 80 on the load side and the anti-load side.
  • the end bracket 60 holds the shaft 70 and the rotor 40 rotatably via the bearing 80.
  • the end bracket 60 is mechanically connected to the housing 50.
  • the housing 50 is held in an electrically grounded state.
  • a shield member 90 that is one of the features of the present embodiment is provided on the inner diameter side of the winding 22.
  • FIG. 4 shows a perspective view of the shielding member 90.
  • the shielding member 90 has a cylindrical shape having at least an axial length equal to or larger than the axial width of the winding 22 facing the outer periphery of the shaft 70, and electrically shields between the members.
  • the shielding member 90 may be configured such that a flat plate member is rounded into a cylindrical shape, or may be a seamless cylindrical member formed by molding.
  • the shielding member 90 is obtained from a thin member (for example, a sheet-like member) for the purpose of downsizing in the radial direction.
  • the shielding member 90 has a plurality of communication holes 91 penetrating in the radial direction as a whole.
  • the communication holes 91 are arranged so densely that the ratio of the area occupied with respect to the peripheral surface of the shielding member 90 is larger than the area of the portion other than the communication holes 91.
  • the communication holes 91 are regularly provided at regular intervals (constant density) in the rotation axis direction and the circumferential direction of the shielding member 91. Thereby, the flow path resistance of the shielding member with respect to the resin 30 is made uniform, and the deformation of the shielding member 90 can be more effectively suppressed.
  • each communication hole 91 is equal, the density of adjacent communication holes 91 is high, and the distance is equal in the vertical and horizontal directions. That is, as schematically shown in FIG. 5, if the communication holes 91 are dense, the flow resistance becomes non-uniform, pressure distribution from the resin occurs, and the strength of the shielding member 90 also becomes non-uniform. This is because there is a high possibility that this will occur.
  • the width or height of the communication port is preferably larger than the plate thickness of the shielding member 90. This is because the flow resistance when the resin 30 passes through the communication hole 91 can be effectively reduced, and deformation of the inner peripheral shielding plate can be suppressed.
  • the resin that enters from the outer diameter side by sealing passes through the communication hole 91 and then immediately flows from the inner diameter side to the outer diameter through the communication hole 91 in the vicinity, so that the shielding member 90 for the sealing resin 90 Resistance can be reduced and deformation can be prevented.
  • a mesh-shaped metal member is used in the present embodiment in the example of FIG.
  • each lattice-like mesh functions as the communication hole 91.
  • the connecting portion between the resin 30 layer on the inner diameter side and the resin 30 layer on the outer diameter side of the shielding member 90 is more evenly dispersed, the holding strength of the resin 30 layer on the inner diameter side is equalized. Thereby, detachment
  • Typical resin molding includes vacuum casting, transfer molding, and injection molding. Transfer molding and injection molding suppress the generation of voids by injecting resin under high pressure. Although there is a load that the resin exerts on the workpiece due to the high pressure, there is an advantage that the molding time can be greatly reduced.
  • vacuum casting resin is injected into a workpiece under low pressure conditions to remove air and suppress the generation of voids. The load exerted on the workpiece such as the shielding member and the core member is small, and the molding time is long. In this embodiment, transfer molding and injection molding are applied. However, the present invention can sufficiently achieve the effect even in the case of vacuum casting.
  • a shielding member 90 is disposed in a portion of the core 202 facing the winding 22.
  • the shielding member 90 is disposed so as to be wound around the core 202.
  • a housing 50 is disposed on the outer diameter side of the core member 20, the lower mold 201, and the upper mold (not shown).
  • the mold and the core member 20 are temperature controlled by a heater or the like incorporated in the mold.
  • the upper mold is provided with one or a plurality of openings, and the resin 30 is injected in several seconds to several tens of seconds.
  • the injected resin 30 is filled as a whole with a gap between the core members 20 or a gap between the core member 20 and the housing 50 as a flow path. For example, a pressure of about several MPa to several tens of MPa is applied to the resin 30.
  • Fig. 6 (b) shows a cross section taken along the line BB 'after molding.
  • the top view of the stator 10, the housing 50, and the shielding member 90 is shown. It can be seen that a part of the shielding member 90 swells to the outer diameter side, and the resin 30 is adhered between the swelled part and the core 202.
  • the shielding member 90 is disposed between the winding 22 and the shaft 70 without being substantially deformed, and can be electrically shielded.
  • FIG.6 (b) is an example and may become a mode which changes with every resin enclosure.
  • FIG. 6B shows that the resin wraps around all between the core 202 and the shielding member, but the resin does not turn to a part of the inner diameter and the surface is exposed to the core 202 side.
  • the shielding member 90 may be slightly expanded to the outer diameter side. This is because the resin that has entered the inner diameter side spreads toward the outer diameter side.
  • Such variations often depend on the shape of the flow path formed by the gap between the members, the temperature distribution of the members, or other environmental factors (air temperature, atmospheric pressure, etc.) in addition to the variations in the materials themselves, and the same results are always obtained. It is difficult.
  • the amount of deformation or displacement of the position is in a range sufficient for electrical and magnetic shielding of the winding portion facing the shaft 70. That is, the communication holes 91 of the same size are arranged at equal density and at equal intervals, so that the resistance applied to the shielding member 90 is small, the pressure distribution of the resin is less likely to occur, and / or the strength of the shielding member 90 with a regular composition. This is to ensure.
  • the communication hole 91 makes it possible for the resin to enter the inner diameter from the outer diameter, and the resin that has entered easily escapes to the outer diameter side, so that the shielding member 91 is held by the resin by the wraparound.
  • Such a holding mode can hardly be expected with a shielding member that has only been thinned, and there is a significant risk of falling off the rotor due to rotational vibration, thermal stress, etc., but this embodiment also solves such problems. can do.
  • the shielding member 90 a cylindrical member continuously formed integrally by pressing or extrusion may be used, or a grid-like mesh member (net-like member) made of a sheet member having a predetermined thickness is cut. A rounded product may be applied.
  • the former has merit in terms of strength of the shielding member 90, and the latter has merit in terms of molding and cost.
  • FIG. 7 shows an example of rounding (in FIG. 7, the member grid is omitted).
  • the ends of the mesh member having a predetermined length are overlapped and fixed.
  • the fixing means may be a tape material or an adhesive, but it is preferable to apply welding, rivets, bolts, or the like depending on the high pressure of resin sealing, thermal expansion during heating, and the like.
  • an example is shown in which rivets are applied to both ends and the center of the overlapped portion in the axial direction.
  • FIG. 8 shows an example of a member suitable for the shielding member 91.
  • A is an example of a plain woven wire mesh obtained by knitting a conductive wire.
  • B is an example of the punching metal which carried out the punching process of the electroconductive board
  • C is an example of an expanded metal obtained by processing a conductive plate material into a net shape.
  • the shielding member 90 of the first embodiment functions as an electrostatic shielding material by setting the ground potential. For this reason, the reliable connection between the ground plane and the shielding member also greatly contributes to ensuring reliability.
  • the second embodiment an example of grounding the shielding member 90 of the first embodiment is shown.
  • symbol is used about the same location as Example 1, and description is abbreviate
  • FIG. 9 is an axial sectional perspective view showing the arrangement relationship of the stator 10, the housing 50, and the shielding member 90 before resin sealing.
  • reference numeral 93 denotes a conducting member, which has a function of electrically connecting a part of the shielding member 90 and a part of the housing 50 and grounding the shielding member 91.
  • the conductive member 90 is disposed in a region between the coils of the adjacent core members 20 facing each other. For example, when the winding 22 is not wound near the base of the flange portion 24 of the bobbin 23, the conductive member 93 is disposed in a space between the winding 22 and the flange portion 24.
  • the conductive member 93 is preferably a member having mechanical flexibility, and is made of, for example, a metal wire member, a metal thin plate member, a wire member, or a wire, but is not limited thereto.
  • the conducting member 93 is arranged over the radial direction of the motor 100. For example, it arrange
  • the conductive member 93 is provided with an insulating member except for a connection portion between the shielding member 90 and the housing 50. In this embodiment, a vinyl wire is applied.
  • FIG. 10 shows a connection structure between the shielding member 90 and the conductive member 93.
  • FIG. 10A shows a state in which the ground terminal 94 is installed on the shielding member 90.
  • the shielding member 90 (communication hole / mesh etc. is not shown) is rounded and the overlapping ends are welded at three points.
  • a plate-shaped grounding terminal 94 having a pilot hole 94a is sandwiched from one radial portion and integratedly connected to one welding portion (for example, any welding point at both ends in the axial direction).
  • FIG. 10B shows an axial cross section of a connection example between the ground terminal 94 and the conductive member 93.
  • a crimp terminal 95 having a pilot hole is connected to the axial center end of the conductive member 93.
  • the conduction member 93 is electrically connected to the shielding member 90 by the blind rivet 96 using the prepared holes of the ground terminal 94 and the crimp terminal 95.
  • the conductive member 93, the ground terminal 94, and the blind rivet 96 are molded with the resin 30.
  • the conductive member 93 maintains insulation from the surrounding windings 22 and electrically connects the shielding member 90 and the housing 50 securely.
  • the conductive member 90, the ground terminal 94, the crimp terminal 95, and the shielding member 90 have mechanical flexibility, the load applied to the connection points at both ends is reduced by the deformation of the sealing pressure of the resin 30 itself. can do. Thereby, the reliability with respect to the grounding of the shielding member 90 improves.
  • the flexibility of the conductive member 93 and the like can absorb the dimensional variations caused by the member dimensions and the assembly accuracy, thereby improving the assembly workability.
  • Bridging rivets contribute to ensuring both connection strength and workability.
  • the shielding member 90 can be prevented from being thickened, and the motor can be reduced in size, output, efficiency, and cost.
  • the grounding surface which connects the shielding member 90 is the site
  • it may be connected to a shielding material for shielding between the winding 22 and the rotor 40.
  • a metal plate-like member for shielding is installed on all or a part of the collar portion 24 and a grounding wire having the metal plate-like member or the like as a ground potential is secured.
  • the communication hole 91 of the shielding member 90 may be directly used for connection with the conduction member 93.
  • the shielding member 90 (1) reliably reduces the axial voltage, (2) ensures the insulation distance between the shielding member 90 and the winding 22, and (3 ) Prevention of defects due to lack of the resin 30 can be realized. Further, downsizing, performance improvement, and reliability improvement can be achieved.
  • the present invention is not limited to the above various examples, and various changes and substitutions can be made without departing from the spirit of the present invention.
  • a double rotor type axial gap type permanent magnet synchronous motor has been described.
  • other types of axial gap type permanent magnet synchronous motors may be used.
  • a synchronous reluctance motor, a switched reluctance motor, an induction motor, or the like that does not include the permanent magnet 41 may be used.
  • a generator may be used instead of a motor.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Frames (AREA)
  • Permanent Magnet Type Synchronous Machine (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

L'objet de la présente invention est d'empêcher une tension de palier et d'obtenir une miniaturisation et une haute performance d'une machine électrique tournante. L'invention concerne une machine électrique tournante de type à entrefer axial qui possède : un stator dans lequel une pluralité d'éléments de noyau comprenant un noyau de stator autour duquel sont enroulés des enroulements dans la direction circonférentielle sont disposés de manière annulaire autour d'un arbre tournant et sont moulés d'un seul tenant avec de la résine ; un rotor faisant face à une surface de flux magnétique du stator par un entrefer dans la direction de l'axe de rotation ; et un arbre tournant qui tourne conjointement avec le rotor et pénètre dans l'axe de rotation du stator. Le stator présente une forme tubulaire le long de la forme périphérique extérieure de l'axe de rotation, et comprend un élément de protection qui protège électriquement les enroulements et la section de face radiale de l'arbre tournant. L'élément de protection possède une pluralité de trous de connexion à une densité constante pénétrant dans la direction radiale dans la surface circonférentielle complète intercalée entre les enroulements et la section de face radiale de l'arbre tournant. Le rapport de section de la pluralité de trous de connexion occupant toute la surface circonférentielle est supérieur au rapport de section d'une partie à l'extérieur de la pluralité de trous de connexion, et de la résine est introduite depuis un côté diamètre extérieur vers un côté diamètre intérieur dans au moins une partie de l'élément de protection par l'intermédiaire des trous de connexion.
PCT/JP2015/082814 2015-11-24 2015-11-24 Machine électrique tournante de type à entrefer axial et stator de machine électrique tournante WO2017090074A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
PCT/JP2015/082814 WO2017090074A1 (fr) 2015-11-24 2015-11-24 Machine électrique tournante de type à entrefer axial et stator de machine électrique tournante
JP2017552548A JP6547006B2 (ja) 2015-11-24 2015-11-24 アキシャルギャップ型回転電機及び回転電機用固定子
TW105125340A TWI638502B (zh) 2015-11-24 2016-08-09 Axial gap type rotating electric machine and stator for rotating electric machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2015/082814 WO2017090074A1 (fr) 2015-11-24 2015-11-24 Machine électrique tournante de type à entrefer axial et stator de machine électrique tournante

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WO2017090074A1 true WO2017090074A1 (fr) 2017-06-01

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TW (1) TWI638502B (fr)
WO (1) WO2017090074A1 (fr)

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CN112152340A (zh) * 2020-08-19 2020-12-29 沈阳工业大学 高散热的无轭分块电枢轴向磁通轴向固定永磁电机定子
US20220329138A1 (en) * 2021-04-07 2022-10-13 Nathaniel Brandon Haines Induction generator

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US11831211B2 (en) 2017-06-05 2023-11-28 E-Circuit Motors, Inc. Stator and rotor design for periodic torque requirements
CN109667834A (zh) * 2017-10-16 2019-04-23 沈阳登程矿山机械有限公司 一种无侧向力磁悬浮廻转轴承
BR112021007191A2 (pt) * 2018-11-01 2021-07-20 E-Circuit Motors, Inc. projeto de estator e de rotor para requisitos de torque periódico
JP2021010275A (ja) * 2019-07-03 2021-01-28 株式会社日立産機システム 回転電機

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JP4069779B2 (ja) * 2003-03-26 2008-04-02 松下電器産業株式会社 回転電機
JP2005185075A (ja) * 2003-12-24 2005-07-07 Fujitsu General Ltd アキシャルギャップ型電動機
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JP5564341B2 (ja) * 2010-06-21 2014-07-30 株式会社日立産機システム 回転電機
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JP2012182945A (ja) * 2011-03-02 2012-09-20 Toyota Industries Corp 回転電機
WO2015162708A1 (fr) * 2014-04-23 2015-10-29 株式会社日立産機システム Machine électrique rotative à entrefer axial

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112152340A (zh) * 2020-08-19 2020-12-29 沈阳工业大学 高散热的无轭分块电枢轴向磁通轴向固定永磁电机定子
US20220329138A1 (en) * 2021-04-07 2022-10-13 Nathaniel Brandon Haines Induction generator

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TW201722035A (zh) 2017-06-16
JP6547006B2 (ja) 2019-07-17
TWI638502B (zh) 2018-10-11
JPWO2017090074A1 (ja) 2018-09-13

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