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WO2025142143A1 - Machine électrique tournante - Google Patents

Machine électrique tournante Download PDF

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Publication number
WO2025142143A1
WO2025142143A1 PCT/JP2024/039548 JP2024039548W WO2025142143A1 WO 2025142143 A1 WO2025142143 A1 WO 2025142143A1 JP 2024039548 W JP2024039548 W JP 2024039548W WO 2025142143 A1 WO2025142143 A1 WO 2025142143A1
Authority
WO
WIPO (PCT)
Prior art keywords
core
flow passage
armature
groove
forming plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/JP2024/039548
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English (en)
Japanese (ja)
Inventor
徹也 峰雪
辰郎 日野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of WO2025142143A1 publication Critical patent/WO2025142143A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Definitions

  • This disclosure relates to rotating electrical machines.
  • the armature is cooled, for example, by sealing the armature and rotor in a housing and operating a blower to suck in air from inside the housing (see, for example, Patent Document 1).
  • a support plate is added to the gap between the armature and rotor, and a cavity is provided in the support plate to allow the refrigerant to pass through.
  • This disclosure discloses technology to solve the above-mentioned problems, and aims to provide a rotating electric machine that cools the armature, has a simple structure, and is easy to assemble.
  • the rotating electric machine disclosed herein comprises an armature and a rotor arranged axially opposite the armature with a magnetic gap therebetween, the armature comprises an armature core through which magnetic flux passes, a bobbin that insulates the surface of the armature core, a coil wound around the bobbin, and a flow passage forming plate arranged in the axial center of the armature core, the flow passage forming plate being a first flow passage forming plate and a second flow passage forming plate aligned in the axial direction, the first flow passage forming plate having a first flow passage groove on the surface facing the second flow passage forming plate, the second flow passage forming plate having a second flow passage groove at a position facing the first flow passage groove on the surface facing the first flow passage forming plate, and the first flow passage groove and the second flow passage groove form a refrigerant flow passage through which a cooling medium flows.
  • the rotating electric machine disclosed herein includes an armature and a rotor arranged axially opposite the armature with a magnetic gap between them.
  • the armature includes an armature core that passes magnetic flux, a bobbin that insulates the surface of the armature core, a coil wound around the bobbin, and a flow passage forming plate arranged in the axial center of the armature core.
  • the flow passage forming plate is a first flow passage forming plate and a second flow passage forming plate aligned in the axial direction.
  • the first flow passage forming plate includes a first flow passage groove on the surface facing the second flow passage forming plate
  • the second flow passage forming plate includes a second flow passage groove on the surface facing the first flow passage forming plate at a position opposite the first flow passage groove.
  • the first flow passage groove and the second flow passage groove form a refrigerant flow passage through which a cooling medium flows, thereby cooling the armature, and the structure is simple and easy to assemble.
  • FIG. 1 is a schematic cross-sectional view of a rotating electric machine according to a first embodiment.
  • 2 is a schematic cross-sectional view of an armature according to the first embodiment.
  • FIG. 4 is a diagram for explaining an armature core in the first embodiment.
  • FIG. FIG. 2 is a schematic diagram showing an example of a refrigerant flow path in the first embodiment.
  • 3 is an enlarged view of a portion of an example of a refrigerant flow path in the first embodiment.
  • FIG. 5 is a schematic diagram showing another example of a refrigerant flow path in the first embodiment.
  • FIG. 11 is a diagram for explaining an armature core in a second embodiment.
  • FIG. FIG. 11 is a schematic diagram showing an example of a refrigerant flow path in the second embodiment.
  • FIG. 11 is a perspective view of an armature core according to a third embodiment.
  • FIG. 11 is a perspective view of an armature core before the first plate and the second plate are joined together in the third embodiment.
  • FIG. 13 is a schematic diagram showing an example of a refrigerant flow path in the third embodiment.
  • FIG. 1 is a schematic diagram showing a cross section of a rotating electric machine 100 according to the first embodiment.
  • the rotating electric machine 100 according to the first embodiment includes a housing 10, a shaft 40, an armature 20, and two rotors 30 arranged axially opposite each other with the armature 20 therebetween.
  • the rotors 30 are arranged with a magnetic gap interposed between them.
  • the rotating electric machine 100 according to the first embodiment is an axial gap type rotating electric machine 100, and has a double rotor structure in which the armature 20 is arranged in the center in the axial direction and the rotors 30 are arranged at both ends in the axial direction.
  • the axial gap type rotating electric machine 100 can increase the area through which magnetic flux passes, and can increase the output density of the rotating electric machine, compared to a radial gap type rotating electric machine in which the armature and the rotor are arranged in the radial direction of the rotating shaft.
  • the housing 10 comprises a cylindrical frame 11 with a bottom, and an end plate 12 that closes the opening of the frame 11.
  • the rotor 30 comprises a yoke 31 made of a steel plate that is easily permeable to magnetic flux, and a permanent magnet 32.
  • the permanent magnets 32 are arranged at equal intervals around the circumference of the rotor 30, and are fixed, for example, by adhesive or press fitting.
  • the permanent magnets 32 may be molded integrally with the yoke 31 using a plastic magnet.
  • the shaft 40 is structurally connected to the rotor 30.
  • the shaft 40 is rotatably supported by the housing 10 via bearings 50.
  • the armature 20 is fixed to the frame 11.
  • the armature 20 comprises an armature core 21 through which magnetic flux passes, a bobbin 22 that insulates the surface of the armature core 21, a coil 23 wound around the bobbin 22, and a connection plate 25 that distributes current to the coil 23.
  • the armature 20 also comprises a flow path forming plate 24 disposed in the axial center of the armature core 21.
  • the flow path forming plate 24 comprises a refrigerant flow path 26 through which a cooling medium flows.
  • Methods for winding the coil 23 around the bobbin 22 include, for example, bobbin winding, in which the bobbin 22 is rotated while winding, nozzle winding, in which a nozzle is passed around the bobbin 22 while winding, and flyer winding, in which a flyer is rotated around the bobbin 22 while winding.
  • the connection plate 25 has three plates for the three phases, and each plate and the electric wire of each phase of the coil 23 are connected by, for example, TIG welding, resistance brazing in which a brazing material is melted by heating through electrical current to connect, brazing or welding using a laser, or pressure welding in which the coil 23 is inserted into the end of a plate with a notch.
  • the armature 20 in the first embodiment is a first armature 20a and a second armature 20b stacked in the axial direction.
  • FIG. 2 is a diagram of only the armature 20 extracted from FIG. 1, a schematic diagram showing a cross section of the armature 20, and a schematic diagram of the cross sections of the first armature 20a and the second armature 20b.
  • the first armature 20a includes a first armature core 21a which is an armature core 21, a first bobbin 22a which is a bobbin 22 and insulates the surface of the first armature core 21a, and a first coil 23a which is a coil 23 and is wound around the first bobbin 22a.
  • the second armature 20b includes a second armature core 21b which is an armature core 21, a second bobbin 22b which is a bobbin 22 and insulates the surface of the second armature core 21b, and a second coil 23b which is a coil 23 and is wound around the second bobbin 22b.
  • the end of the first armature core 21a facing the second armature core 21b is the first flow passage forming plate 24a
  • the end of the second armature core 21b facing the first armature core 21a is the second flow passage forming plate 24b
  • the first flow passage forming plate 24a and the second flow passage forming plate 24b are stacked together to form the flow passage forming plate 24.
  • the plate of the connection plate 25 is connected to one end of the electric wire of the first coil 23a
  • the other end of the electric wire of the first coil 23a is connected to one end of the electric wire of the second coil 23b.
  • the first armature core 21a includes a first flow path forming plate 24a and first core teeth 211a, which are a plurality of core teeth arranged in the circumferential direction.
  • the first armature core 21a is, for example, integrally molded with the first flow path forming plate 24a and the plurality of first core teeth 211a arranged in the circumferential direction by a powder core compressed and molded from powder such as iron.
  • the first teeth side surface 212a which is the teeth side surface 212, is a surface that faces other core teeth adjacent in the circumferential direction among the surfaces parallel to the rotation axis 41 of the first core teeth 211a, which are core teeth, and is a surface extending in the radial direction among the surfaces parallel to the rotation axis 41 of the first core teeth 211a, which are core teeth.
  • the second armature core 21b has the same configuration as the first armature core 21a, and includes a second flow passage forming plate 24b and a plurality of second core teeth 211b arranged in the circumferential direction.
  • the second flow passage forming plate 24b and the plurality of second core teeth 211b arranged in the circumferential direction are integrally molded by a powder core formed by compressing powder such as iron.
  • the second teeth side surface 212b is a surface of the second core teeth 211b parallel to the rotation axis 41 that faces other core teeth adjacent in the circumferential direction, and is a surface of the second core teeth 211b parallel to the rotation axis 41 that extends in the radial direction.
  • the first teeth side surface 212a and the second teeth side surface 212b are in the same position when viewed from the axial direction.
  • Figure 4 is a schematic diagram showing an example of a refrigerant flow path 26 in embodiment 1, where the upper diagram in Figure 4 is a view of the first armature core 21a from below in Figure 1, and the lower diagram in Figure 4 is a view of the second armature core 21b from above in Figure 1.
  • the dotted line indicates the position of a plane parallel to the rotation axis 41 in the first core teeth 211a.
  • the dotted line indicates the position of a plane parallel to the rotation axis 41 in the second core teeth 211b.
  • a first flow path groove 241a for flowing refrigerant from the flow path inlet 261 to the flow path outlet 262 is provided on the surface of the first flow path forming plate 24a of the first armature core 21a, which faces the second flow path forming plate 24b.
  • a second flow passage groove 241b for flowing the refrigerant from the flow passage inlet 261 to the flow passage outlet 262 is provided at a position facing the first flow passage groove 241a on the surface of the second flow passage forming plate 24b of the second armature core 21b.
  • the surface of the first flow passage forming plate 24a provided with the first flow passage groove 241a and the surface of the second flow passage forming plate 24b provided with the second flow passage groove 241b are aligned with each other, and the first armature core 21a and the second armature core 21b are stacked in the axial direction to form the armature core 21.
  • the first flow passage groove 241a and the second flow passage groove 241b form a refrigerant flow passage 26 for flowing the refrigerant from the flow passage inlet 261 to the flow passage outlet 262.
  • the flow passage inlet 261 and the flow passage outlet 262 are disposed on the radial outermost circumference of the armature core 21, and the refrigerant is supplied to the flow passage inlet 261 on the side surface of the housing 10 of the rotating electric machine 100, and the refrigerant is collected from the flow passage outlet 262.
  • the refrigerant is, for example, air or a cooling liquid.
  • the positions of the flow passage inlet 261 and the flow passage outlet 262 are not limited to the positions shown in FIG.
  • the flow passage inlet 261 is located at a position where the refrigerant can be supplied to the refrigerant flow passage 26, and the flow passage outlet 262 is located at a position where the refrigerant can be collected from the refrigerant flow passage 26.
  • the flow passage outlet 262 may be located on the radial opposite side of the flow passage inlet 261.
  • the frame 11 is divided into two parts, an upper part and a lower part as shown in FIG. 1, and a first flow path forming plate 24a and a second flow path forming plate 24b are sandwiched between the divided frame 11 and pressurized in the axial direction, and the divided frame 11 is fixed by screwing, gluing, welding or fusing.
  • the method of fixing the armature 20 to the frame 11 is not limited to the method shown in FIG. 1, and any method that fixes the armature 20 to the frame 11 may be used.
  • FIG. 5 is an enlarged view of a portion of an example of the refrigerant flow path 26 in embodiment 1 shown in the upper diagram of FIG. 4, and shows a portion of the first armature core 21a as viewed from below in FIG. 1.
  • the dotted lines indicate the position of the surface parallel to the rotation axis of the first core tooth 211a
  • the dotted lines extending in the radial direction indicate the position of the first teeth side surface 212a, which is the teeth side surface 212.
  • the first flow groove 241a overlaps with the first teeth side surface 212a.
  • the second flow groove 241b overlaps with the second teeth side surface 212b.
  • the refrigerant flow path 26 formed by the first flow groove 241a and the second flow groove 241b overlaps with the teeth side surface 212, which is the surface facing another circumferentially adjacent core tooth among the surfaces parallel to the rotation axis 41 of the core teeth.
  • This arrangement makes it easier to remove Joule heat caused by copper loss that occurs when current flows through the coil 23 wound around the armature core 21.
  • this arrangement prevents the refrigerant flow passage 26 from creating magnetic resistance when the magnetic flux generated when current flows through the coil 23, or the magnetic flux from the permanent magnet 32 of the rotor 30, passes through the armature core 21.
  • FIG. 6 is a schematic diagram showing another example of the refrigerant flow path 26 in embodiment 1, and is a view of the first armature core 21a viewed from below in FIG. 1.
  • the surface of the first flow path forming plate 24a of the first armature core 21a facing the second flow path forming plate 24b is provided with a first flow path groove 241a in the form of a single spiral for flowing the refrigerant from the flow path inlet 261 to the flow path outlet 262.
  • the rotating electric machine 100 includes the armature 20 and the rotor 30 arranged axially opposite the armature 20 with a magnetic gap therebetween.
  • the armature 20 includes an armature core 21 through which magnetic flux passes, a bobbin 22 that insulates the surface of the armature core 21, a coil 23 wound around the bobbin 22, and a flow passage forming plate 24 arranged in the axial center of the armature core 21.
  • the flow passage forming plate 24 includes a first flow passage forming plate 24a and a second flow passage forming plate 24b.
  • the first tooth side surface 212a which is a tooth side surface, is a surface of the first core tooth 211a parallel to the rotation axis 41 that faces another core tooth adjacent in the circumferential direction, and is a surface extending in the radial direction of the first core tooth 211a parallel to the rotation axis 41.
  • the second armature core 21b includes a plurality of second split cores 213b arranged in the circumferential direction and a second ring 214b that holds the plurality of second split cores 213b arranged in the circumferential direction.
  • the second armature core 21b in the second embodiment is formed, for example, by fixing a plurality of second split cores 213b arranged in the circumferential direction and in contact with each other using the second ring 214b by press-fitting or shrink-fitting.
  • Each of the second split cores 213b includes one second core tooth 211b.
  • the second tooth side surface 212b which is the tooth side surface, is a surface of the second core tooth 211b that faces another circumferentially adjacent core tooth among the surfaces parallel to the rotation axis 41, and is a surface extending radially among the surfaces parallel to the rotation axis 41 of the second core tooth 211b.
  • the end of the first armature core 21a facing the second armature core 21b is the first flow passage forming plate 24a, and the first flow passage forming plate 24a in the second embodiment is made up of the first ring 214a and the end of the first split core 213a facing the second split core 213b.
  • the end of the second armature core 21b facing the first armature core 21a is the second flow passage forming plate 24b, and the second flow passage forming plate 24b in the second embodiment is made up of the second ring 214b and the end of the second split core 213b facing the first split core 213a.
  • FIG. 8 is a schematic diagram showing an example of a refrigerant flow path 26 in embodiment 2, where the upper diagram in FIG. 8 is a diagram of the first armature core 21a viewed from below in FIG. 1, and the lower diagram in FIG. 8 is a diagram of the second armature core 21b viewed from above in FIG. 1.
  • the dotted line indicates the position of a plane parallel to the rotation axis 41 in the first core teeth 211a.
  • the dotted line indicates the position of a plane parallel to the rotation axis 41 in the second core teeth 211b.
  • a first split core groove 244a for flowing refrigerant is provided on the surface of the first split core 213a facing the second split core 213b.
  • a second split core groove 244b for flowing refrigerant is provided on the surface of the second split core 213b facing the first split core 213a, at a position opposite the first split core groove 244a.
  • the first split core groove 244a and the second split core groove 244b form a split core flow path 263 for flowing the refrigerant.
  • the first ring groove 245a and the second ring groove 245b form a flow path inlet 261, a flow path outlet 262, and a relay path 264 connecting adjacent divided core flow paths, so that the first divided cores 213a and the second divided cores 213b can all be made of the same shape. Therefore, the first divided cores 213a and the second divided cores 213b can be molded from a powder magnetic core using a molding die of a common shape, and the initial investment for a mold, etc. can be suppressed.
  • first divided core 213a is fixed by press-fitting or shrink-fitting using the first ring 214a
  • second divided core 213b is fixed by press-fitting or shrink-fitting using the second ring 214b
  • the first ring 214a and the second ring 214b may be made of a material with high thermal conductivity, such as an aluminum plate, instead of a powder magnetic core, to improve cooling performance.
  • bobbin winding can be performed by rotating the first split core 213a or the second split core 213b at high speed, which also improves productivity during winding.
  • Embodiment 3 Comparing the configuration of the rotating electric machine according to the third embodiment with the rotating electric machine according to the first embodiment, the basic structure of the rotating electric machine shown in FIG. 1 is the same, but the structure of the armature core 21 is different.
  • FIG. 9 is a diagram for explaining the armature core 21 in the third embodiment, and is a perspective view of the armature core 21 viewed obliquely from above in FIG. 1.
  • the armature core 21 in the third embodiment includes a plurality of rectangular teeth 215 arranged in the circumferential direction and a plate 216 that holds the rectangular teeth 215.
  • the plate 216 is a flow passage forming plate 24, and is a first plate 216a that is a first flow passage forming plate 24a and a second plate 216b that is a second flow passage forming plate 24b that are aligned in the axial direction.
  • the plate 216 is disposed in the center of the rectangular teeth 215 in the axial direction.
  • the rectangular teeth 215 have a structure that is long in the axial direction.
  • the tooth side surface 212 is a surface facing another rectangular tooth 215 adjacent in the circumferential direction among the surfaces parallel to the rotation axis 41 of the rectangular teeth 215 that are core teeth, and is a surface extending in the radial direction among the surfaces parallel to the rotation axis 41 of the rectangular teeth 215 that are core teeth.
  • the rectangular teeth 215 are inserted into holes in the first plate 216a and the second plate 216b, the first plate 216a and the second plate 216b are aligned at the center of the rectangular teeth 215 in the axial direction, and the rectangular teeth 215, the first plate 216a, and the second plate 216b are fixed by press-fitting or shrink-fitting.
  • Fig. 10 is a perspective view of the armature core 21 in the third embodiment, showing a state before the first plate 216a and the second plate 216b are aligned in the axial direction.
  • FIG. 11 is a schematic diagram showing an example of a refrigerant flow path 26 in embodiment 3, where the upper diagram in FIG. 11 is a diagram of the first plate 216a viewed from below in FIG. 1, and the lower diagram in FIG. 11 is a diagram of the second plate 216b viewed from above in FIG. 1.
  • the surface of the first plate 216a facing the second plate 216b is provided with a first flow path groove 241a for flowing the refrigerant from the flow path inlet 261 to the flow path outlet 262.
  • the surface of the second plate 216b facing the first plate 216a is provided with a second flow path groove 241b for flowing the refrigerant at a position opposite the first flow path groove 241a.
  • the first flow path groove 241a and the second flow path groove 241b constitute the refrigerant flow path 26 for flowing the refrigerant.
  • the radially extending grooves of the first flow groove 241a and the second flow groove 241b are arranged along the holes into which the rectangular teeth 215 are fitted.
  • the first flow groove 241a, the second flow groove 241b, and the surface parallel to the axial direction of the rectangular teeth 215 form a refrigerant flow path 26 extending in the radial direction, and the refrigerant flowing through the refrigerant flow path 26 comes into contact with the tooth side surface 212.
  • This structure makes it easier to remove Joule heat caused by copper loss that occurs when current flows through the coil 23 wound around the armature core 21.
  • this arrangement prevents the refrigerant flow path 26 from becoming magnetically reluctant when the magnetic flux when current flows through the coil 23 or the magnetic flux from the permanent magnet 32 of the rotor 30 passes through the armature core 21.
  • the armature includes a first armature and a second armature
  • the first armature is a first armature core, a first bobbin that insulates a surface of the first armature core; the coil comprising a first coil wound around the first bobbin;
  • the second armature is A second armature core, which is the armature core; a second bobbin that insulates a surface of the second armature core; the coil comprising a second coil wound around the second bobbin; an end portion of the first armature core in a direction toward the second armature core is the first flow-path forming plate, 3.
  • the rotating electric machine wherein an end portion of the second armature core in a direction toward the first armature core is the second flow passage forming plate.
  • the first armature core is A plurality of first divided cores arranged in a circumferential direction; a first ring for holding the first split core;
  • the second armature core is A plurality of second divided cores arranged in a circumferential direction; a second ring for holding the second split core;
  • the first flow channel is a first divided core groove provided on a surface of the first divided core facing the second armature core; a first ring groove on a surface of the first ring facing the second armature core;
  • the second flow channel is a second split core groove on a surface of the second split core facing the first armature core; a second ring groove on a surface of the second ring facing the first armature core;
  • the first and second divided core grooves form divided core flow passages, A rotating electric machine as described in Appendix 3, characterized in that the
  • the armature core is A plurality of rectangular teeth arranged in a circumferential direction; a first plate and a second plate for holding the rectangular teeth, The first plate is the first flow path forming plate, The second plate is the second flow path forming plate, the first flow passage groove, the second flow passage groove, and a surface of the rectangular tooth parallel to an axial direction thereof constitute the refrigerant flow passage; 3.
  • the first plate and the second plate are made of aluminum.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Iron Core Of Rotating Electric Machines (AREA)

Abstract

La présente invention concerne une machine électrique tournante qui refroidit un induit, qui a une structure simple, et qui peut être facilement assemblée.　Une machine électrique tournante selon la présente invention comprend un induit (20) et un rotor (30) qui est disposé de manière à faire face à l'induit (20) dans la direction axiale avec un entrefer magnétique entre eux, l'induit (20) comprenant, au niveau d'une partie centrale dans la direction axiale d'un noyau d'induit (21), une plaque formant un trajet d'écoulement (24) dans laquelle une première plaque formant un trajet d'écoulement (24a) et une seconde plaque formant un trajet d'écoulement (24b) sont alignées dans la direction axiale ; la première plaque formant un trajet d'écoulement (24a) comprend une première rainure de trajet d'écoulement (241a) dans une surface de celle-ci qui fait face à la seconde plaque formant un trajet d'écoulement (24b) ; la seconde plaque formant un trajet d'écoulement (24b) comprend une seconde rainure de trajet d'écoulement (241b) à une position faisant face à la première rainure de trajet d'écoulement (241a), dans une surface de celle-ci qui fait face à la première plaque formant un trajet d'écoulement (24a) ; et la première rainure de trajet d'écoulement (241a) et la seconde rainure de trajet d'écoulement (241b) forment un trajet d'écoulement de fluide de refroidissement dans lequel s'écoule un fluide de refroidissement.
PCT/JP2024/039548 2023-12-25 2024-11-07 Machine électrique tournante Pending WO2025142143A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2023-217874 2023-12-25
JP2023217874 2023-12-25

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Publication Number Publication Date
WO2025142143A1 true WO2025142143A1 (fr) 2025-07-03

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PCT/JP2024/039548 Pending WO2025142143A1 (fr) 2023-12-25 2024-11-07 Machine électrique tournante

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001500353A (ja) * 1996-08-09 2001-01-09 ザ・ターボ・ゲンセット・カンパニー・リミテッド 回転電気機械
JP2006033965A (ja) * 2004-07-14 2006-02-02 Nissan Motor Co Ltd ディスク型回転電機のステータ冷却構造
JP2022112227A (ja) * 2021-01-21 2022-08-02 本田技研工業株式会社 ロータ及び回転電機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001500353A (ja) * 1996-08-09 2001-01-09 ザ・ターボ・ゲンセット・カンパニー・リミテッド 回転電気機械
JP2006033965A (ja) * 2004-07-14 2006-02-02 Nissan Motor Co Ltd ディスク型回転電機のステータ冷却構造
JP2022112227A (ja) * 2021-01-21 2022-08-02 本田技研工業株式会社 ロータ及び回転電機

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