Rotating Machine

Abstract

To provide a rotary machine which suppresses flow of eddy current in winding.SOLUTION: A plurality of conductive films 51 constituting a wire 50 are arranged so that each thickness direction intersects with a direction of magnetic flux generated from a plurality of magnetic poles. The plurality of conductive films 51 are configured so that conductivity in a longitudinal direction is larger than conductivity in the thickness direction and conductivity in the longitudinal direction is lager than conductivity in a width direction. Thus, flow of eddy current in the thickness direction or the width direction can be suppressed in the plurality of conductive films 51 when the magnetic flux generated from the plurality of magnetic poles passes the plurality of conductive films 51.SELECTED DRAWING: Figure 4

Description

[Technical field]

[0001] The present invention relates to a rotating machine. [Background technology]

[0002] Conventionally, a winding electric wire composed of a plurality of divided wires has been proposed (for example, see Patent Document 1). Each of the plurality of divided wires includes a conductor core wire and an electrically insulating coating that covers the conductor core wire. This makes it possible to suppress the generation of eddy currents in the cross section of the electric wire due to magnetic flux generated from the magnetic poles of the electric motor. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2006-100077 A Summary of the Invention [Problem to be solved by the invention]

[0004] The above-mentioned Patent Document 1 describes that an electric wire for winding is made up of a plurality of divided wires in order to suppress the flow of eddy currents in the electric wire.

[0005] The present inventors, referring to the electric wire for windings in the above-mentioned Patent Document 1, have investigated the possibility of forming windings from a plurality of conductive films in order to suppress the generation of eddy currents in rotating machines.

[0006] In view of the above, an object of the present invention is to provide a rotating machine having a winding formed of a plurality of conductive films. [Means for solving the problem]

[0007] In order to achieve the above object, the present invention provides a rotating machine, comprising: a rotor (3) having a plurality of magnetic poles (44a-44l, 45a-45l) arranged in a circumferential direction around an axis (Sa) and configured to be rotatable around the axis; a stator coil (32) including a plurality of phase windings (30A-30L, 31A-31L) in which an electric wire (50) is wound for each phase, the plurality of phase windings being arranged in a circumferential direction; When the rotor rotates around its axis, magnetic flux generated from the multiple magnetic poles generates current in the multiple phase windings, and when current flows through the multiple phase windings, a rotating magnetic field generated from the multiple phase windings generates a rotational force in the multiple magnetic poles of the rotor. When the direction in which each of the windings of the multiple phases extends is defined as a longitudinal direction, one of the windings of the multiple phases includes a plurality of conductive films (51, 51A, 51C, 51D) extending in the longitudinal direction, the plurality of conductive films are arranged in a state of being stacked in a thickness direction, where a direction intersecting the longitudinal direction and forming the thickness of each of the plurality of conductive films is defined as a thickness direction; A winding is arranged so that the direction of magnetic flux generated from at least one of the multiple magnetic poles crosses the thickness direction. And, In the case where the direction intersecting the thickness direction and the longitudinal direction is defined as the width direction, Each of the plurality of conductive films is configured so that the electrical conductivity in the thickness direction is smaller than the electrical conductivity in the longitudinal direction, and the electrical conductivity in the width direction is smaller than the electrical conductivity in the longitudinal direction. .

[0008] Therefore, it is possible to provide a rotating machine having a winding formed of a plurality of conductive films.

[0009] The reference symbols in parentheses attached to each component indicate an example of the correspondence between the component and specific components described in the embodiments described below. [Brief description of the drawings]

[0010] [Figure 1] FIG. 2 is a cross-sectional view showing a cross-sectional configuration of a rotating machine in a first embodiment, cut by a plane perpendicular to an axis, and is a cross-sectional view to assist in explaining a plurality of teeth portions, a plurality of windings, and a plurality of permanent magnets of a rotor. [Diagram 2] 2 is a cross-sectional view taken along line II-II of the rotating machine of FIG. 1, for assisting in the description of the plurality of teeth portions, the plurality of windings of the stator core, and the plurality of permanent magnets of the rotor. FIG. [Diagram 3] FIG. 2 is a diagram showing a stator coil that is configured with a plurality of windings of the rotating machine of FIG. 1, and is a diagram for assisting in the explanation of the plurality of windings. [Figure 4] FIG. 2 is a front view showing the structure of an electric wire constituting the winding in FIG. 1, and is a diagram for assisting in the explanation of the positional relationship between a conductive film and an insulating layer constituting the electric wire. [Diagram 5] FIG. 2 is a perspective view showing the structure of an electric wire constituting the winding in FIG. 1, and is a diagram for assisting in the explanation of the longitudinal direction, thickness direction, and width direction of the electric wire and the conductive film. [Figure 6] 5 is a front view of the carbon nanotubes constituting the conductive film of FIG. 4, seen from the outside in the radial direction, and is a diagram for assisting in the explanation of the extending direction of the carbon nanotubes. FIG. [Figure 7] 7 is a view of one end of the carbon nanotube in FIG. 6 in the extension direction, as viewed from one side in the extension direction. [Figure 8] FIG. 2 is a cross-sectional view of the windings, teeth, and permanent magnets of the stator in FIG. 1 cut along a plane extending radially including the axis of the teeth, and is a diagram for explaining the relationship between the thickness direction of the conductive film and the direction of magnetic flux. [Figure 9] FIG. 2 is a perspective view showing the structure of a rectangular copper wire that is the subject of a simulation for comparison with the eddy current loss of the electric wire of the first embodiment. [Figure 10] FIG. 2 is a perspective view showing a structure of a copper split wire that is the subject of a simulation for comparison with the eddy current loss of the electric wire of the first embodiment. [Figure 11] FIG. 2 is a perspective view showing a film-laminated wire that is the subject of a simulation for determining eddy current loss of the electric wire of the first embodiment. [Figure 12] FIG. 13 is a front view showing the structure of electric wires constituting a winding of a second embodiment, and is a diagram for assisting in the explanation of the positional relationship of conductive films and insulating layers constituting a plurality of windings. [Figure 13] FIG. 13 is a front view showing the structure of electric wires constituting the winding of the third embodiment, and is a view to assist in explaining the structure of conductive films constituting a plurality of windings. [Figure 14] FIG. 13 is a front view showing the structure of electric wires constituting the winding of the fourth embodiment, and is a view to assist in explaining the structure of conductive films constituting a plurality of windings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0011] Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following embodiments, the same or equivalent parts are denoted by the same reference numerals in the drawings in order to simplify the description.

[0012] (First embodiment) The rotating machine 1 is a motor generator that operates as either an electric motor or a generator, and includes a stator 2 and a rotor 3, as shown in Figures 1 and 2. The stator 2 includes a stator core 20 made of a magnetic material. The stator core 20 includes an annular portion 22 formed in an annular shape centered on the axis Sa.

[0013] The annular portion 22 is provided with teeth portions 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23k, 23l, 24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h, 24i, 24j, 24k, and 24l.

[0014] Hereinafter, teeth portions 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23k, 23l, 24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h, 24i, 24j, 24k, and 24l will be referred to as teeth portions 23a to 24l.

[0015] The teeth portions 23a to 24l are formed so as to protrude radially inward about the axis Sa from the annular portion 22. The teeth portions 23a to 24l are arranged at equal intervals in the circumferential direction about the axis Sa.

[0016] The teeth portions 23a, 23b, 23c, 23d, 23e, 23f, 23g, 23h, 23i, 23j, 23k, and 23l are arranged clockwise in the order in which they are described.

[0017] Teeth portions 24a, 24b, 24c, 24d, 24e, 24f, 24g, 24h, 24i, 24j, 24k, and 24l are arranged between teeth portions 23a and 23l in the order in which they are described clockwise.

[0018] Teeth portions 23a, 23c, 23e, 23g, 23i, 23k, 24a, 24c, 24e, 24g, 24i, and 24k are provided with windings 30A, 30C...30K, 31A, 31C...31K formed by winding an electric wire in the forward winding direction.

[0019] The windings 30A, 30C...30K, 31A, 31C...31K are an abbreviation of the windings 30A, 30C, 30E, 30G, 30I, 30K, 31A, 31C, 31E, 31G, 31I, and 31K.

[0020] Windings 30B, 30D...30L, 31B, 31D...31L formed by winding an electric wire in the reverse winding direction are provided on teeth portions 23b, 23d, 23f, 23h, 23j, 23l, 24b, 24d, 24f, 24h, 24j, and 24l. The windings 30B, 30D...30L, 31B, 31D...31L are omitted from the description of the windings 30B, 30D, 30F, 30H, 30J, 30L, 31B, 31D, 31F, 31H, 31J, and 31L.

[0021] In this embodiment, the right-handed (i.e., clockwise) direction from the base side of the teeth (i.e., the annular portion 22 side) to the tip of the teeth is defined as the forward winding direction. The left-handed (i.e., counterclockwise) direction from the base side of the teeth to the tip of the teeth is defined as the reverse winding direction, which is the opposite direction to the forward winding direction.

[0022] In this embodiment, electric wire 50 constituting windings 30A, 30C...30K, 31A, 31C...31K is formed of a plurality of conductive films 51. Electric wire 50 constituting windings 30B, 30D...30L, 31B, 31D...31L is formed of a plurality of conductive films 51. The structure of electric wire 50 will be described later.

[0023] The windings 30A, 30B, 30G, 30H, 31A, 31B, 31G, and 31H are connected in series to form a U-phase winding 32a shown in Figure 3. The windings 30C, 30D, 30I, 30J, 31C, 31D, 31I, and 31J are connected in series to form a V-phase winding 32b shown in Figure 3. The windings 30E, 30F, 30K, 30L, 31E, 31F, 31K, and 31L are connected in series to form a W-phase winding 32c shown in Figure 3.

[0024] As described above, the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are star-connected as shown in FIG.

[0025] The rotor 3 in FIG. 1 includes a rotor core 40, permanent magnets 41a to 41l, 42a to 42l, a disk portion 45, and a rotating shaft 47.

[0026] The permanent magnets 41a to 41l are obtained by omitting the permanent magnets 41a, 41b, 41c, 41d, 41e, 41f, 41g, 41h, 41i, 41j, 41k, and 41l. The permanent magnets 42a to 42l are obtained by omitting the permanent magnets 42a, 42b, 42c, 42d, 42e, 42f, 42g, 42h, 42i, 42j, 42k, and 42l.

[0027] Rotor core 40 is made of a magnetic material and formed into an annular shape centered on axis Sa. Rotor core 40 is supported so as to be rotatable in the circumferential direction centered on axis Sa. Permanent magnets 41a-41l and 42a-42l are each built into rotor core 40.

[0028] The permanent magnets 41a to 41l and 42a to 42l are arranged in the order shown in the drawing in a clockwise direction in the circumferential direction about the axis Sa.

[0029] The permanent magnets 41a to 41l and 42a to 42l form magnetic poles 44a to 44l and 45a to 45l that generate magnetic fluxes for the windings 30A to 30L and 31A to 31L, respectively.

[0030] The magnetic poles 44a to 44l are an abbreviation of 44a, 44b, 44c, 44d, 44e, 44f, 44g, 44h, 44i, 44j, 44k, and 44l. The magnetic poles 45a to 45l are an abbreviation of 45a, 45b, 45c, 45d, 45e, 45f, 45g, 45h, 45i, 45j, 45k, and 45l.

[0031] The magnetic poles 44a to 44l and 45a to 45l are formed on the radially outer side centered on the axis Sa of the rotor core 40. The magnetic poles 44a to 44l and 45a to 45l are arranged in the circumferential direction centered on the axis Sa.

[0032] Of the permanent magnets 41a-41l and 42a-42l, of two permanent magnets adjacent in the circumferential direction centered on the axis Sa, the permanent magnet on one side has its S pole arranged radially inward and its N pole arranged radially inward. Of the two permanent magnets, the other permanent magnet other than the permanent magnet on one side has its N pole arranged radially inward and its S pole arranged radially inward.

[0033] Specifically, permanent magnets 41a, 41c, 41e, 41g, 41i, 41k, 42a, 42c, 42e, 42g, 42i, and 42k each have their south pole arranged radially outward from the axis Sa as their center, and their north pole arranged radially inward from the axis Sa as their center.

[0034] Permanent magnets 41b, 41d, 41f, 41h, 41j, 41l, 42b, 42d, 42f, 42h, 42j, and 42l each have an N pole arranged radially outwardly about axis Sa and an S pole arranged radially inwardly about axis Sa.

[0035] In FIG. 1, the hatched parts of the permanent magnets 41a to 41l and 42a to 42l indicate north poles, and the hatched parts of the permanent magnets 41a to 41l and 42a to 42l indicate south poles.

[0036] Further, the disk portion 45 of the rotor 3 is made of a magnetic material and formed into a disk shape centered on the axis Sa, and is fitted into the hollow portion of the rotor core 40. In this way, the disk portion 45 supports the rotor core 40.

[0037] The rotating shaft 47 is formed in a cylindrical shape centered on the axis Sa. The rotating shaft 47 is formed so as to extend in one axial direction from the disc portion 45. The axial direction is the direction in which the axis Sa extends. The rotating shaft 47 is rotatably supported by the rotor housing 48 via the bearings 49a, 49b. As a result, the rotor 3 is rotatably supported by the bearings 49a, 49b. The bearings 49a, 49b are disposed radially outward from the rotating shaft 47, with the axial direction as the center. The bearings 49a, 49b are disposed offset from each other in the axial direction. The rotor housing 48 is disposed in a cylindrical shape centered on the axial direction. The rotor housing 48 is disposed radially outward from the bearings 49a, 49b, centered on the axial direction. Next, the structure of the electric wire of this embodiment will be described with reference to FIGS.

[0038] As shown in Fig. 4, the electric wire 50 of this embodiment is a film laminated wire including a plurality of conductive films 51 and a plurality of insulating layers 53. Each of the plurality of conductive films 51 is a film having conductivity and flexibility. Each of the plurality of conductive films 51 is formed so as to extend in the longitudinal direction of the electric wire 50. The longitudinal direction of the electric wire 50 indicates the direction in which a driving current flows.

[0039] The plurality of conductive films 51 are laminated. The plurality of conductive films 51 are formed so that their respective longitudinal directions are aligned. The conductive films 51 are disposed so that their respective width directions are aligned.

[0040] 5, the longitudinal direction is the direction in which the electric wire 50 and the plurality of conductive films 51 extend, and the thickness direction is the direction that intersects with the longitudinal direction and forms the thickness of each of the plurality of conductive films 51. Specifically, the thickness direction is the direction that is perpendicular to the longitudinal direction and forms the thickness of each of the plurality of conductive films 51.

[0041] In the plurality of conductive films 51, the width direction is a direction that intersects with the thickness direction and intersects with the longitudinal direction. Specifically, in the plurality of conductive films 51, the width direction is a direction that is perpendicular to the thickness direction and perpendicular to the longitudinal direction.

[0042] The insulating layers 53 are laminated in the thickness direction together with the conductive films 51. Specifically, the insulating layers 53 are alternately arranged in the thickness direction with respect to the conductive films 51. Here, the insulating layers 53 are each formed in a thin film shape using an electrically insulating resin material.

[0043] In this embodiment, the insulating layers 53 are each formed by impregnating one surface of each of the conductive films 51 in the thickness direction with an electrically insulating resin material. In this way, the electric wire 50 is configured by laminating the plurality of conductive films 51 and the plurality of insulating layers 53. The plurality of insulating layers 53 play a role in suppressing the generation of eddy current in the electric wire 50, as will be described later.

[0044] In this embodiment, electrically insulating films made of an electrically insulating material are used as the insulating layers 53. The electrically insulating films are films that are electrically insulating and flexible. Examples of the electrically insulating resin material that can be used to form the electrically insulating film include polymethyl methacrylate resin, polypropylene, polyethylene, monomer cast nylon, Duracon, polycarbonate, and the like.

[0045] In this embodiment, each of the conductive films 51 includes a plurality of carbon nanotubes. The plurality of carbon nanotubes are arranged such that the extension direction Es of each of the carbon nanotubes is aligned with the longitudinal direction of the electric wire 50.

[0046] 6 and 7, the extension direction Es is a direction perpendicular to the radial direction Ka of the carbon nanotube 52. In other words, the extension direction Es is the direction in which the axis Sb of the carbon nanotube 52 extends. Therefore, the extension direction Es of each of the multiple carbon nanotubes coincides with the longitudinal direction of the electric wire 50.

[0047] Since the multiple conductive films 51 are configured in this manner, each of the multiple conductive films 51 has a greater electrical conductivity in the longitudinal direction than the electrical conductivity in the thickness direction, and the electrical conductivity in the longitudinal direction is greater than the electrical conductivity in the width direction.

[0048] That is, each of the plurality of conductive films 51 has a smaller electrical conductivity in the thickness direction than in the longitudinal direction, and also has a smaller electrical conductivity in the width direction than in the longitudinal direction.

[0049] By utilizing the anisotropy of the conductivity of the plurality of conductive films 51, it is possible to expect the effect of providing electrical insulation to the surfaces of the plurality of conductive films 51.

[0050] In addition, the electric wire 50 of this embodiment is formed by stacking 60 conductive films 51 each having a thickness of 20 μm and a width of 8 mm.

[0051] In this embodiment, as shown in FIG. 8, the windings 30A to 30L and 31A to 31L are arranged so that the direction of magnetic flux Ma generated from the permanent magnets 41a to 41l and 42a to 42l intersects with the thickness direction of the conductive film 51.

[0052] 5 and 8, a surface of the electric wire 50 that is formed on one or the other side in the width direction and extends in the longitudinal direction is referred to as a thickness surface 55. The windings 30A-30L, 31A-31L are arranged on the respective thickness surfaces 55 so as to intersect with the direction of the magnetic flux Ma generated from the permanent magnets 41a-41l, 42a-42l.

[0053] Fig. 8 is a cross-sectional view of one turn of the winding 30A, the permanent magnet 41a, and the teeth portion 23a cut along a plane that includes the axis Sa and extends in a radial direction centered on the axis Sa. For convenience of explanation, Fig. 8 shows a schematic diagram of one turn of the winding 30A, but in reality, a winding having multiple turns is used as the winding 30A.

[0054] Next, the operation of the rotating machine 1 of this embodiment will be described.

[0055] First, when the rotating machine 1 operates as an electric motor, when a three-phase AC current flows as a drive current from an inverter circuit (not shown) to the stator coil 32, a rotating magnetic field is generated in the windings 30A to 30L and 31A to 31L.

[0056] The windings 30A to 30L are obtained by omitting the windings 30A, 30B, 30C, 30D, 30E, 30F, 30G, 30H, 30I, 30J, 30K, and 30L. The windings 31A to 31L are obtained by omitting the windings 31A, 31B, 31C, 31D, 31E, 31F, 31G, 31H, 31I, 31J, 31K, and 31L.

[0057] The rotating magnetic field is a magnetic field that rotates around axis Sa in windings 30A-30L, 31A-31L. Therefore, a rotational force is generated in magnetic poles 44a-44l, 45a-45l of rotor 3 in association with the rotating magnetic field generated from windings 30A-30L, 31A-31L. As a result, rotor 3 rotates, and the rotational force of rotor 3 is output from rotating shaft 47.

[0058] The magnetic poles 44a to 44l are an abbreviation of the magnetic poles 44a, 44b, 44c, 44d, 44e, 44f, 44g, 44h, 44i, 44j, 44k, and 44l. The magnetic poles 45a to 45l are an abbreviation of the magnetic poles 45a, 45b, 45c, 45d, 45e, 45f, 45g, 45h, 45i, 45j, 45k, and 45l.

[0059] On the other hand, when the rotating machine 1 operates as a generator, a rotational force is applied from the outside to the rotating shaft 47, causing the rotor 3 to rotate. At this time, a three-phase AC current can be generated in the windings 30A-30L and 31A-31L by the magnetic flux generated from the magnetic poles 44a-44l and 45a-45l. This allows three-phase AC power to be output from the windings 30A-30L and 31A-31L.

[0060] Here, when the rotating machine 1 operates as either a three-phase AC motor or a three-phase AC generator, magnetic flux generated from the multiple magnetic poles 4a-44l, 45a-45l of the rotor 3 passes through the multiple conductive films 51 that make up the windings 30A-30L, 31A-31L.

[0061] In this embodiment, as described above, the multiple conductive films 51 are arranged such that the direction of the magnetic flux Ma generated from the magnetic poles 44a to 44l and 45a to 45l intersects with the thickness direction of each of the conductive films 51.

[0062] As described above, the multiple insulating layers 53 are arranged alternately in the thickness direction, one by one, with respect to the multiple conductive films 51. Therefore, the multiple insulating layers 53h can suppress the generation of eddy currents in the multiple conductive films 51 due to the magnetic flux generated from the magnetic poles 44a-44l and 45a-45l. In other words, even if the magnetic flux passing through the multiple conductive films 51 changes, the multiple insulating layers 53h can suppress the generation of eddy currents in the multiple conductive films 51.

[0063] Furthermore, as described above, each of the conductive films 51 has a larger electrical conductivity in the longitudinal direction than in the thickness direction, and the electrical conductivity in the longitudinal direction is larger than in the width direction.

[0064] This makes it possible to suppress the generation of eddy currents in the thickness direction and width direction due to the magnetic flux generated from the magnetic poles 44a-44l and 45a-45l in the multiple conductive films 51. In other words, even if the magnetic flux passing through the multiple conductive films 51 changes, the multiple conductive films 51 themselves can suppress the generation of eddy currents in the thickness direction and width direction.

[0065] The present inventors have investigated the possibility of forming windings 30A-30L, 31A-31L of electric wire 50 having a plurality of conductive films 51 made of carbon nanotubes 52 in rotating machine 1 to suppress the occurrence of eddy current loss.

[0066] Therefore, according to the present embodiment described above, the rotating machine 1 has magnetic poles 44a to 44l, 45a to 45l arranged in a circumferential direction centered on the axis Sa, and is equipped with a rotor 3 configured to be freely rotatable about the axis Sa.

[0067] The rotating machine 1 includes three-phase windings 30A-30L, 31A-31L, each of which is wound with an electric wire 50 for each phase, and a stator coil 32 in which the windings 30A-30L, 31A-31L are arranged in the circumferential direction in the radial direction about the axis Sa with respect to the rotor 3.

[0068] When an AC current flows through the three-phase windings 30A to 30L and 31A to 31L, a rotating magnetic field is generated from the three-phase windings 30A to 30L and 31A to 31L, which causes a rotational force to be generated in the magnetic poles 44a to 44l and 45a to 45l of the rotor 3.

[0069] The electric wire 50 includes a plurality of conductive films 51, which are arranged in a stacked state so that each of the conductive films 51 extends in the longitudinal direction, thereby forming the electric wire 50 so as to extend in the longitudinal direction.

[0070] The conductive films 51 are arranged such that the direction of magnetic flux Ma generated from the magnetic poles 44a to 44l and 45a to 45l intersects with each other in the thickness direction.

[0071] Each of the conductive films 51 includes a plurality of carbon nanotubes. The extension direction Es of each of the carbon nanotubes coincides with the longitudinal direction of the electric wire 50. In this case, each of the conductive films 51 is configured so that the conductivity in the longitudinal direction is greater than the conductivity in the thickness direction, and the conductivity in the longitudinal direction is greater than the conductivity in the width direction.

[0072] Therefore, the electrical conductivity in the thickness direction and the width direction is smaller than the electrical conductivity in the longitudinal direction in the multiple conductive films 51. Therefore, when the magnetic flux generated from the magnetic poles 44a-44l and 45a-45l passes through the multiple conductive films 51, it is possible to suppress the flow of eddy currents in the thickness direction or the width direction in the multiple conductive films 51.

[0073] As a result, it is possible to provide a rotating machine 1 that is adapted to suppress the flow of eddy currents in the three-phase windings 30A to 30L and 31A to 31L.

[0074] In this embodiment configured as above, the following effect (a) can be obtained.

[0075] (a) The multiple insulating layers 53 are alternately arranged in the thickness direction with respect to the multiple conductive films 51. This makes it possible to further prevent eddy currents from flowing in the thickness direction in the multiple conductive films 51. This makes it possible to further prevent eddy currents from flowing in the three-phase windings 30A-30L, 31A-31L (i.e., the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c).

[0076] Next, the results of a simulation of eddy current loss that occurs when the rectangular copper wire 50A, the divided copper wire 50B, and the film-laminated wire 50C are used as electric wires will be described with reference to FIGS. 9, 10, and 11. FIG.

[0077] Fig. 9 shows an example in which a magnetic flux Ma is applied to a rectangular copper wire 50A. As shown in Fig. 9, the rectangular copper wire 50A is an electric wire made of a rectangular copper bar having a thickness of 1.2 mm, a width of 1.0 mm, and a length of 160 mm.

[0078] Fig. 10 shows an example in which a magnetic flux Ma is applied to a copper split wire 50B. As shown in Fig. 10, the copper split wire 50B is configured in a prismatic shape by arranging 20 copper split element wires 51B, each of which is 0.24 mm in the thickness direction, 0.25 mm in the width direction, and 160 mm in the longitudinal direction. In the copper split wire 50B of Fig. 10, five copper split element wires 51B are arranged in the thickness direction and four in the width direction.

[0079] Fig. 11 shows an example in which a magnetic flux Ma is applied to a film-laminated wire 50C. As shown in Fig. 11, the film-laminated wire 50C is formed by laminating a plurality of conductive films each having a thickness of 20 µm, a width of 1 mm, and a length of 160 mm, similar to the electric wire 50 of this embodiment. The plurality of conductive films are arranged such that the extension direction of the plurality of carbon nanotubes is aligned along the length direction, similar to the conductive film 51 of this embodiment.

[0080] According to the results of a simulation to determine eddy current loss occurring in the copper rectangular wire 50A, the copper divided wire 50B, and the film laminated wire 50C, when the eddy current loss occurring in the copper rectangular wire 50A is taken as 100, the eddy current loss occurring in the copper divided wire 50B is 3.84. Furthermore, the eddy current loss occurring in the film laminated wire 50C is 0.04.

[0081] From the above, it is found that the use of the film-laminated wire 50C (that is, the electric wire 50 of this embodiment) reduces eddy current loss compared to the use of the rectangular copper wire 50A or the divided copper wire 50B.

[0082] Second embodiment In the above-described first embodiment, an example in which the electric wire 50 is formed of a plurality of conductive films 51 including carbon nanotubes has been described. However, instead of this, a second embodiment in which the electric wire 50 is formed of a plurality of conductive films 51D made of a metal material will be described with reference to FIG.

[0083] The electric wire 50 of the present embodiment includes a plurality of conductive films 51D instead of the plurality of conductive films 51 in the electric wire 50 of the above-described first embodiment. Each of the plurality of conductive films 51D is formed in a thin film shape from a conductive metal material such as copper, aluminum, iron, or the like.

[0084] The electric wire 50 of this embodiment, like the electric wire 50 of the first embodiment, includes a plurality of insulating layers 53. The insulating layers 53 are arranged alternately in the thickness direction on the plurality of conductive films 51D, as shown in FIG.

[0085] In the present embodiment, a plurality of conductive films 51D configured as above are formed to extend in the longitudinal direction of the electric wire 50. The electric wire 50 including the plurality of conductive films 51D is wound around the teeth portions 23a to 24l to form the windings 30A to 30L, 31A to 31L.

[0086] As in the first embodiment, the windings 30A to 30L and 31A to 31L are arranged in the thickness direction of the conductive film 51 such that the direction of the magnetic flux Ma generated from the magnetic poles 44a to 44l and 45a to 45l crosses the thickness direction of the conductive film 51.

[0087] Therefore, the multiple insulating layers 53 can suppress the flow of eddy currents in the windings 30A-30L, 31A-31L (i.e., the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c) due to the magnetic flux generated from the magnetic poles 44a-44l, 45a-45l.

[0088] Third embodiment An example has been described in which the electric wire 50 is formed by alternately arranging the first plurality of insulating layers 53 on the plurality of conductive films 51 one by one.

[0089] However, instead, a third embodiment in which insulating layers 57a, 57b are provided on one and the other sides in the thickness direction of each of the plurality of conductive films 51A will be described with reference to FIG.

[0090] The electric wire 50 of the present embodiment is composed of a plurality of conductive films 51A in place of the plurality of conductive films 51. Similar to the plurality of conductive films 51 of the first embodiment, the plurality of conductive films 51A have a larger electrical conductivity in the longitudinal direction than in the thickness direction, and the electrical conductivity in the longitudinal direction is larger than in the width direction.

[0091] 13, one side in the thickness direction of each of the conductive films 51A is provided with a plurality of protruding portions 55a that protrude toward one side in the thickness direction and a plurality of recessed portions 55c that are recessed toward the other side in the thickness direction. In this embodiment, the plurality of protruding portions 55a and the plurality of recessed portions 55c are alternately arranged one by one in the longitudinal direction of the electric wire 50.

[0092] On the other thickness direction side of each of the conductive films 51A, a plurality of protruding portions 55b that protrude toward the other thickness direction side and a plurality of recessed portions 55d that recess toward one thickness direction side are provided. In this embodiment, the plurality of protruding portions 55b and the plurality of recessed portions 55d are alternately arranged one by one in the longitudinal direction of the electric wire 50.

[0093] Of two adjacent conductive films 51A, the tip portions of the multiple protrusions 55b of one conductive film 51A are in contact with the tip portions of the multiple protrusions 55a of the other conductive film 51A other than the one conductive film 51A.

[0094] Between each of the plurality of recesses 55d of the conductive film 51A on one side and the plurality of recesses 55c of the conductive film 51A on the other side, a gap 58 is formed.

[0095] Therefore, the multiple protrusions 55a, 55b and the recesses 55c, 55d can reduce the contact area between two adjacent conductive films 51 A. Therefore, the multiple protrusions 55a and the multiple recesses 55c form insulating layer 57a, which is an electrical insulating layer that suppresses current flow in the thickness direction between two adjacent conductive films 51 A.

[0096] The multiple protrusions 55b and the multiple recesses 55d form an insulating layer 57b that prevents a current from flowing between two adjacent conductive films 51A.

[0097] In each of the plurality of conductive films 51A, an intermediate layer 57c through which a driving current flows is formed between the insulating layers 57a and 57b.

[0098] In this embodiment configured as described above, the windings 30A to 30L and 31A to 31L are arranged such that the magnetic fluxes generated from the magnetic poles 44a to 44l and 45a to 45l cross each other in the thickness direction.

[0099] Here, similarly to the first embodiment described above, each of the multiple conductive films 51A is configured so that the conductivity in the thickness direction is smaller than the conductivity in the longitudinal direction, and the conductivity in the width direction is greater than the conductivity in the longitudinal direction.

[0100] In this manner, in this embodiment, the windings 30A to 30L and 31A to 31L are formed by the electric wire 50 having a plurality of conductive films 51A.

[0101] Therefore, even if magnetic flux generated from magnetic poles 44a-44l, 45a-45l passes through windings 30A-30L, 31A-31L, eddy currents caused by the magnetic flux can be prevented from flowing in the thickness and width directions in windings 30A-30L, 31A-31L.

[0102] In this embodiment, as described above, in each of the plurality of conductive films 51A, the insulating layers 57a, 57b are formed on one thickness direction side and the other thickness direction side of the intermediate layer 57c.

[0103] Therefore, the insulating layers 57a, 57b can further suppress the flow of eddy currents in the windings 30A-30L, 31A-31L (i.e., the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c) due to the magnetic flux generated from the magnetic poles 44a-44l, 45a-45l.

[0104] (Fourth embodiment) In the above first embodiment, an example has been described in which the electric wire 50 is configured by alternately arranging a plurality of insulating layers 53 on a plurality of conductive films 51 one by one.

[0105] However, instead, a fourth embodiment in which the electric wire 50 has a conductive film 51C between two of the plurality of conductive films 51 will be described with reference to FIG.

[0106] FIG. 14 shows a portion of an electric wire 50 in which a conductive film 51C is disposed between two conductive films 51.

[0107] The two conductive films 51 each include a plurality of carbon nanotubes as a first conductive film and a third conductive film. The plurality of carbon nanotubes are arranged such that the extension direction Es of each of the carbon nanotubes is aligned with the longitudinal direction of the electric wire 50. Conductive film 51C serves as a second conductive film and is disposed such that the extension direction Es of each of the multiple carbon nanotubes is aligned with the thickness direction.

[0108] Therefore, in each of the two conductive films 51, a greater number of carbon nanotubes out of the multiple carbon nanotubes are arranged along the longitudinal direction in the distribution of the extension direction Es of the carbon nanotubes compared to the conductive film 51C.

[0109] As a result, the two conductive films 51 have higher conductivity in the longitudinal direction than the conductive film 51C. That is, the conductive film 51C has lower conductivity in the longitudinal direction than the two conductive films 51.

[0110] In addition, the two conductive films 51 have lower conductivity in the thickness direction than the conductive film 51C. That is, the conductive film 51C has higher conductivity in the thickness direction than the two conductive films 51.

[0111] In this manner, in this embodiment, the windings 30A to 30L and 31A to 31L are formed by the electric wire 50 including the two conductive films 51 and the conductive film 51C.

[0112] In this embodiment, the two conductive films 51 and the conductive film 51C are arranged in their respective thickness directions such that the directions of magnetic fluxes generated from the magnetic poles 44a-44l, 45a-45l intersect with the windings 30A-30L, 31A-31L.

[0113] Each of the two conductive films 51 has a smaller electrical conductivity in the thickness direction than in the longitudinal direction, and also has a smaller electrical conductivity in the width direction than in the longitudinal direction.

[0114] As in the first embodiment, it is possible to further prevent eddy currents from flowing in the windings 30A-30L, 31A-31L (i.e., the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c) due to the magnetic flux generated from the magnetic poles 44a-44l, 45a-45l.

[0115] In this embodiment, the conductive film 51C is disposed between the two conductive films 51. Therefore, the conductive film 51C can function as an electrical insulating layer that suppresses the flow of a driving current between the two conductive films 51.

[0116] (Other embodiments) (1) In the above first to fourth embodiments, an example has been described in which the rotating machine 1 is a motor generator that operates as either an electric motor or a generator.

[0117] However, instead of this, the rotating machine 1 may be operated exclusively as an electric motor without operating as a generator. Alternatively, the rotating machine 1 may be operated exclusively as a generator without operating as a motor. In other words, the rotating machine 1 may be a dedicated motor, or the rotating machine 1 may be a dedicated generator.

[0118] Also, the rotor 3 may rotate about the axis Sa to generate magnetic flux from multiple magnetic poles to generate current in multiple windings, thereby forming a DC generator. Furthermore, the rotating machine is not limited to an AC motor or a DC generator, and may be a stepping motor, as long as it includes a rotor that forms multiple magnetic poles and multiple stator coils.

[0119] (2) In the above first to fourth embodiments, the rotating machine 1 is described as having 24 magnetic poles such as the magnetic poles 44a to 44l and 45a to 45l. However, the present invention is not limited to this, and the number of magnetic poles of the rotating machine 1 may be less than 24 or may be 24 or more, as long as the number is more than one.

[0120] (3) In the above first to fourth embodiments, the rotating machine 1 is described as having three-phase windings 30A-30L, 31A-31L, but the number of phases of the rotating machine 1 is not limited to this, and may be three or less, or four or more. In other words, where N is an integer of 2 or 4 or more, the rotating machine 1 may be an N-phase AC rotating machine.

[0121] (4) In the third embodiment, an example was described in which the electric wire 50 was formed by laminating a plurality of conductive films 51A. Alternatively, a plurality of electrical insulating layers may be laminated alternately on the plurality of conductive films 51A. The plurality of electrical insulating layers are made of an electrical insulating resin material and serve to prevent a current from flowing between two adjacent conductive films 51A.

[0122] (5) In the above fourth embodiment, the electric wire 50 in which the conductive film 51C is disposed between the two conductive films 51 has been described. However, instead of this, a plurality of electrical insulating layers may be laminated alternately on the plurality of conductive films 51, 51C. That is, in the electric wire 50, an electrical insulating layer may be disposed between adjacent conductive films 51, 51C.

[0123] (6) In the above first embodiment, an example was described in which conductive film 51 was made of a plurality of carbon nanotubes. In the above second embodiment, an example was described in which conductive film 51A was made of a plurality of carbon nanotubes. In the above fourth embodiment, an example was described in which conductive film 51C was made of carbon nanotubes.

[0124] However, instead of this, the conductive film may be made of carbon other than carbon nanotubes (for example, graphite, carbon nanowalls).

[0125] (7) In the above fourth embodiment, an example has been described in which the two conductive films 51 are arranged such that the extension direction Es of the multiple carbon nanotubes is aligned along the longitudinal direction of the electric wire 50. Furthermore, in the above fourth embodiment, an example has been described in which the conductive film 51C is arranged such that the extension direction Es of the multiple carbon nanotubes is aligned along the thickness direction.

[0126] However, the two conductive films 51 may be configured as follows as long as more carbon nanotubes are arranged along the longitudinal direction in terms of distribution in the extension direction of the carbon nanotubes compared to conductive film 51C.

[0127] That is, the carbon nanotubes constituting each of the two conductive films 51 may be arranged so as to intersect in the longitudinal direction. Also, the carbon nanotubes constituting the conductive film 51C may be arranged so as to intersect in the thickness direction.

[0128] (8) In the above first to fourth embodiments, an example has been described in which the rotor 3 is disposed radially inwardly about the axis Sa with respect to the stator 2 in the rotating machine 1. However, instead of this, the rotor 3 may be disposed radially outwardly about the axis Sa with respect to the stator 2.

[0129] Alternatively, in the rotating machine 1, the rotor 3 may be disposed on one side or the other side of the stator 2 in the axial direction. In this case, the axial direction is the direction in which the axis Sa extends. (9) In the above first to fourth embodiments, the magnetic poles 44a to 44l and 45a to 45l are formed by the permanent magnets 41a to 41l and 42a to 42l. However, instead of this, the magnetic poles 44a to 44l and 45a to 45l may be formed by a plurality of electromagnets instead of the permanent magnets 41a to 41l and 42a to 42l.

[0130] (10) In the above first embodiment, an example has been described in which the multiple insulating layers 53 are formed by impregnating the surfaces of each of the multiple conductive films 51 on one side in the thickness direction with an electrically insulating resin material.

[0131] However, the present invention is not limited to this, and an electrically insulating fixing agent may be used when fixing the carbon nanotubes into a film shape. In this case, similar to the insulating layers 53, each of the conductive films 51 can be electrically insulated on one side in the thickness direction.

[0132] (11) In the above first to fourth embodiments, the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are star-connected to configure the stator coil 32. However, the present invention is not limited to this, and the stator coil 32 may be configured by delta-connecting the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c.

[0133] (12) In the above first embodiment, an example has been described in which the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are provided with a plurality of conductive films 51. However, instead of this, one of the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c may be provided with a plurality of conductive films 51.

[0134] (13) In the above second embodiment, the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are configured with a plurality of conductive films 51D. However, instead of this, one of the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c may be provided with a plurality of conductive films 51D.

[0135] (14) In the third embodiment, the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are configured with a plurality of conductive films 51A. However, instead of this, one of the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c may be provided with a plurality of conductive films 51A.

[0136] (15) In the fourth embodiment, the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c are configured with a plurality of conductive films 51, 51C. However, instead of this, one of the U-phase winding 32a, the V-phase winding 32b, and the W-phase winding 32c may be provided with a plurality of conductive films 51, 51C.

[0137] (16) In the fourth embodiment, the windings 30A to 30L and 31A to 31L are arranged such that the directions of the magnetic fluxes generated from the magnetic poles 44a to 44l and 45a to 45l cross each other in the thickness direction.

[0138] However, instead of this, the windings 30A to 30L, 31A to 31L may be arranged such that the direction of magnetic flux generated from one of the magnetic poles 44a to 44l, 45a to 45l crosses the thickness direction.

[0139] (17) In the third embodiment, an example was described in which the insulating layers 57a and 57b were formed by providing the multiple protrusions 55a, 55b and the multiple recesses 55c, 55d in the multiple conductive films 51A including the multiple carbon nanotubes.

[0140] However, in the conductive films 51D made of a metal material described in the second embodiment, the insulating layers 57a and 57b may be formed by providing the protrusions 55a and 55b and the recesses 55c and 55d.

[0141] (18) In the above fourth embodiment, the electric wire 50 is described as having the conductive film 51C between the two conductive films 51. However, in addition to this, the electric wire 50 may be configured by arranging a plurality of insulating layers 53 alternately between the two conductive films 51 and the conductive film 51C, one for each.

[0142] (19) Note that the present invention is not limited to the above-described embodiments, and can be modified as appropriate within the scope of the claims. The above-described embodiments are not unrelated to each other, and can be combined as appropriate, except in cases where the combination is clearly impossible. It goes without saying that the elements constituting the embodiments in the above-described embodiments are not necessarily essential, except in cases where they are specifically stated as essential or where they are clearly considered essential in principle. [Explanation of symbols]

[0143] 1 Rotating Machine 44a~45l magnetic pole 3 Rotor 30A~30L, 31A~31L Winding 32 Stator coil 41a~42l Permanent magnets 50 Electric wire 51 Conductive film Sa axis

Claims

1. A rotor (3) is a rotating machine having a plurality of magnetic poles (44a to 44l, 45a to 45l) arranged in a circumferential direction around an axis (Sa) and configured to be rotatable around the axis; a stator coil (32) including a plurality of phase windings (30A-30L, 31A-31L) in which an electric wire (50) is wound for each phase, the plurality of phase windings being arranged in the circumferential direction; When the rotor rotates about the axis, a current is generated in the windings of the multiple phases by magnetic flux generated from the multiple magnetic poles, and when a current flows in the windings of the multiple phases, a rotational force is generated in the magnetic poles of the rotor by a rotating magnetic field generated from the windings of the multiple phases, When the direction in which each of the multiple phase windings extends is defined as a longitudinal direction, one of the multiple phase windings includes a plurality of conductive films (51, 51A, 51C, 51D) extending in the longitudinal direction, the plurality of conductive films are arranged in a stacked state in a thickness direction, the thickness direction being a direction intersecting the longitudinal direction and forming a thickness of each of the plurality of conductive films; the one winding is disposed such that a direction of magnetic flux generated from at least one of the plurality of magnetic poles intersects with the thickness direction, When a direction intersecting the thickness direction and the longitudinal direction is defined as a width direction, A rotating machine in which each of the multiple conductive films is configured so that the conductivity in the thickness direction is smaller than the conductivity in the longitudinal direction, and the conductivity in the width direction is smaller than the conductivity in the longitudinal direction.

2. A rotor (3) is a rotating machine having a plurality of magnetic poles (44a to 44l, 45a to 45l) arranged in a circumferential direction around an axis (Sa) and configured to be rotatable around the axis; a stator coil (32) including a plurality of phase windings (30A-30L, 31A-31L) in which an electric wire (50) is wound for each phase, the plurality of phase windings being arranged in the circumferential direction; When the rotor rotates about the axis, a current is generated in the windings of the multiple phases by magnetic flux generated from the multiple magnetic poles, When the direction in which each of the multiple phase windings extends is defined as a longitudinal direction, one of the multiple phase windings includes a plurality of conductive films (51, 51A, 51C, 51D) extending in the longitudinal direction, the plurality of conductive films are arranged in a stacked state in a thickness direction, the thickness direction being a direction intersecting the longitudinal direction and forming a thickness of each of the plurality of conductive films; the one winding is disposed such that a direction of magnetic flux generated from at least one of the plurality of magnetic poles intersects with the thickness direction, When a direction intersecting the thickness direction and the longitudinal direction is defined as a width direction, A rotating machine in which each of the multiple conductive films is configured so that the conductivity in the thickness direction is smaller than the conductivity in the longitudinal direction, and the conductivity in the width direction is smaller than the conductivity in the longitudinal direction.

3. A rotor (3) is a rotating machine having a plurality of magnetic poles (44a to 44l, 45a to 45l) arranged in a circumferential direction around an axis (Sa) and configured to be rotatable around the axis; a stator coil (32) including a plurality of phase windings (30A-30L, 31A-31L) in which an electric wire (50) is wound for each phase, the plurality of phase windings being arranged in the circumferential direction; When a current flows through the windings of the multiple phases, a rotating magnetic field generated from the windings of the multiple phases generates a rotational force in the multiple magnetic poles of the rotor, When the direction in which each of the multiple phase windings extends is defined as a longitudinal direction, one of the multiple phase windings includes a plurality of conductive films (51, 51A, 51C, 51D) extending in the longitudinal direction, the plurality of conductive films are arranged in a stacked state in a thickness direction, the thickness direction being a direction intersecting the longitudinal direction and forming a thickness of each of the plurality of conductive films; the one winding is disposed such that a direction of magnetic flux generated from at least one of the plurality of magnetic poles intersects with the thickness direction, When a direction intersecting the thickness direction and the longitudinal direction is defined as a width direction, A rotating machine in which each of the multiple conductive films is configured so that the conductivity in the thickness direction is smaller than the conductivity in the longitudinal direction, and the conductivity in the width direction is smaller than the conductivity in the longitudinal direction.

4. Each of the plurality of conductive films includes a first conductive film (51A) and a second conductive film (51A) adjacent to each other, one side of one of the first conductive film and the second conductive film in the thickness direction is provided with a convex portion (55a, 55b) that is convex toward the one side in the thickness direction and a concave portion (55c, 55d) that is concave toward the other side in the thickness direction, 4. A rotating machine according to claim 1, wherein a tip of the convex portion is in contact with the other conductive film, and a gap (58) is formed between the concave portion and the other conductive film.

5. A rotor (3) is a rotating machine having a plurality of magnetic poles (44a to 44l, 45a to 45l) arranged in a circumferential direction around an axis (Sa) and configured to be rotatable around the axis; a stator coil (32) including a plurality of phase windings (30A-30L, 31A-31L) in which an electric wire (50) is wound for each phase, the plurality of phase windings being arranged in the circumferential direction; When the rotor rotates about the axis, a current is generated in the windings of the multiple phases by magnetic flux generated from the multiple magnetic poles, and when a current flows in the windings of the multiple phases, a rotational force is generated in the magnetic poles of the rotor by a rotating magnetic field generated from the windings of the multiple phases, When the direction in which each of the multiple phase windings extends is defined as a longitudinal direction, one of the multiple phase windings includes a plurality of conductive films (51, 51A, 51C, 51D) extending in the longitudinal direction, the plurality of conductive films are arranged in a stacked state in a thickness direction, the thickness direction being a direction intersecting the longitudinal direction and forming a thickness of each of the plurality of conductive films; the one winding is disposed such that a direction of magnetic flux generated from at least one of the plurality of magnetic poles intersects with the thickness direction, Each of the plurality of conductive films includes a first conductive film (51A) and a second conductive film (51A) adjacent to each other, a first convex portion (55a, 55b) that is convex toward one side in the thickness direction and a first concave portion (55c, 55d) that is concave toward the other side in the thickness direction are provided on one side of the first conductive film in the thickness direction, the second conductive film is provided on the other side in the thickness direction with a second convex portion (55a, 55b) that is convex toward the other side in the thickness direction and a second concave portion (55c, 55d) that is concave toward one side in the thickness direction, A rotating machine in which a tip portion of the first convex portion of the first conductive film contacts a tip portion of the second convex portion of the second conductive film, and a gap (58) is formed between the first recess of the first conductive film and the second recess of the second conductive film.

6. The rotating machine according to claim 1 , wherein each of the plurality of conductive films comprises a plurality of carbon nanotubes.

7. The rotating machine according to claim 6 , wherein the plurality of carbon nanotubes are arranged along the longitudinal direction.

8. The plurality of conductive films include a first conductive film (51), a second conductive film (51C), and a third conductive film (51), and the second conductive film is disposed between the first conductive film and the third conductive film; A rotating machine as described in claim 6, wherein the first conductive film and the third conductive film are arranged so that more of the carbon nanotubes are arranged along the longitudinal direction in the distribution of the direction (Es) in which the carbon nanotubes extend, compared to the second conductive film.

9. The one winding includes a plurality of insulating layers (53) formed in a film shape from an electrically insulating material; 9. The rotating machine according to claim 1, wherein the insulating layers are arranged alternately in the thickness direction with respect to the conductive films.

10. The rotating machine according to claim 9 , wherein the electrically insulating material is a resin material.

11. The rotating machine according to claim 9 , wherein each of the insulating layers is a flexible film.

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