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WO2018016331A1 - Machine électrique tournante et procédé de fabrication de bobine unitaire de machine électrique tournante - Google Patents

Machine électrique tournante et procédé de fabrication de bobine unitaire de machine électrique tournante Download PDF

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Publication number
WO2018016331A1
WO2018016331A1 PCT/JP2017/024758 JP2017024758W WO2018016331A1 WO 2018016331 A1 WO2018016331 A1 WO 2018016331A1 JP 2017024758 W JP2017024758 W JP 2017024758W WO 2018016331 A1 WO2018016331 A1 WO 2018016331A1
Authority
WO
WIPO (PCT)
Prior art keywords
crank
portions
coil
rotating electrical
electrical machine
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.)
Ceased
Application number
PCT/JP2017/024758
Other languages
English (en)
Japanese (ja)
Inventor
康平 江頭
哲也 横川
辰郎 日野
信吉 澤
中村　成志
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
Priority to JP2018528481A priority Critical patent/JP6576559B2/ja
Publication of WO2018016331A1 publication Critical patent/WO2018016331A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K3/00—Details of windings
    • H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/04—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of windings prior to their mounting into the machines
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
    • H02K15/06—Embedding prefabricated windings in the machines

Definitions

  • the present invention relates to a rotating electrical machine characterized by a winding structure and a method of manufacturing a unit coil of the rotating electrical machine.
  • Patent Document 1 various winding structures suitable for thick wires have been proposed (see, for example, Patent Document 1 and Patent Document 2).
  • a crank part for displacing the coil in the radial direction is provided at the top of the coil end to enhance the cooling performance of the coil.
  • the turn portion of the conducting wire includes a crossing portion inclined in the circumferential direction with respect to a straight line extending in the radial direction from the central axis of the stator core, at a top portion furthest away from the stator core in the axial direction.
  • the inclination direction of the transition portion located on one end side in the axial direction of the stator core is the same as the inclination direction of the transition portion located on the other end side in the axial direction.
  • the insulation performance of the coil on the outer peripheral side is improved by changing the angle of the crank portion at the top of the coil end and increasing the angle toward the outer peripheral side.
  • a stator core having a plurality of slots arranged in the circumferential direction and a stator having a stator winding formed of a rectangular cross-section conductor with an insulating coating and inserted into the slots,
  • the stator winding includes a first segment transition bent portion provided on the radially outer side of the stator and a second segment transition bent portion provided on the radially inner side of the stator.
  • a rotating electrical machine is disclosed in which the layer transition bending portion angle of the segment transition bending portion is larger than the layer transition bending portion angle of the second segment transition bending portion.
  • the present invention has been made to solve the above-described problems, and provides a rotating electrical machine that has high insulation, can be made compact and high in output, and can handle a large current, and a method for manufacturing a unit coil of the rotating electrical machine.
  • the purpose is to do.
  • the rotating electrical machine according to this invention is Inserted across a plurality of teeth in a slot formed between adjacent teeth of a stator core having an annular yoke and a plurality of teeth projecting inwardly from the yoke.
  • a stator having a stator winding composed of a plurality of unit coils;
  • the unit coil is formed in a hexagonal shape, and four or more slot accommodating portions inserted into the slots;
  • the coil end portion includes a plurality of crank portions that change the radial positions of the two slot storage portions in the slot at the circumferential center portion of the coil end portion, Each said crank part has a bending part in the circumferential direction both ends, A radius of curvature of each of the bent portions of each of the crank portions when at least one pair of the
  • crank portion that is present on the radially outer side is larger than the crank portion that is present on the radially inner side
  • the set of crank portions and the set of crank portions that are in the same relative position as viewed from the center of the stator have the same configuration as the set of crank portions.
  • the method for manufacturing the unit coil of the rotating electrical machine is as follows: A bulging part forming step of forming the bulging part on a linear wire using a bulging part molding machine; A crank forming step for forming the crank portion on the basis of the bulging portion; The wire forming step that has finished the crank forming step is wound and formed into a hexagonal shape, An arc forming step of forming the coil end portion in an arc shape in the circumferential direction.
  • the rotating electrical machine and the method for manufacturing the unit coil of the rotating electrical machine according to the present invention are configured as described above, the two units inserted into the slots adjacent in the circumferential direction also on the inner peripheral side of the rotating electrical machine.
  • the interval between one crank part and the other hypotenuse part of the coil can be increased.
  • the radial interval between the unit coils adjacent in the circumferential direction on the inner side of the stator in the crank portion can be increased.
  • FIG. 1 It is a half sectional side view of the rotary electric machine which concerns on Embodiment 1 of this invention. It is a perspective view of the stator which concerns on Embodiment 1 of this invention. It is a perspective view of the split iron core which comprises the stator core which concerns on Embodiment 1 of this invention. It is a perspective view of the stator coil
  • FIG. 10 is a partially enlarged view of FIG. 9.
  • Embodiment 1 FIG.
  • a rotary electric machine according to Embodiment 1 of the present invention will be described with reference to the drawings.
  • “Outside”, the "axial direction”, “circumferential direction”, “radial direction”, “inner peripheral side”, “outer peripheral side”, “inner peripheral surface”, “outer peripheral surface” of the stator, “Inside” and “outside” shall be used.
  • FIG. 1 is a side sectional view of one side of a rotating electrical machine 100.
  • FIG. 2 is a perspective view of the stator 3.
  • FIG. 3 is a perspective view of the split iron core 31 constituting the stator iron core 30.
  • the rotating electrical machine 100 includes a stator 3 that generates a rotating magnetic field, a rotor 2 that is rotatably provided inside the stator 3 via a gap, and the stator 3 and the rotor 2. And a housing 1 that holds
  • the stator 3 includes an annular stator core 30 that allows magnetic flux to pass through, a stator winding 35 that is formed by winding a conductor that generates a magnetic field when energized, and is not illustrated. Interphase insulation of the stator winding 35 and insulating paper 37 that insulates the stator winding 35 and the stator core 30 from each other.
  • the rotor 2 includes a rotor core 20 through which magnetic flux passes, a permanent magnet 21 embedded in the rotor core 20, and a shaft 22 that transmits torque to the outside.
  • the rotor 2 is supported by the housing 1 via bearings 5a and 5b so as to be rotatable within the stator 3.
  • the stator core 30 is configured integrally by arranging 48 divided cores 31 in the circumferential direction in an annular shape.
  • the split iron core 31 connects, for example, iron core pieces 31 k made of electromagnetic steel plates in the stacking direction by caulking, bonding, or the like.
  • the split iron core 31 includes a split back yoke portion 31a obtained by equally dividing the back yoke portion of the stator core 30 into the circumferential direction 48, and a teeth portion 31b extending radially inward from the inner peripheral surface of the split back yoke portion 31a.
  • a slot 6 is formed that opens radially inward, and the stator winding 35 is accommodated therein.
  • the number of the tooth portions 31b is 48, but is not limited thereto.
  • FIG. 4 is a perspective view of the stator winding 35.
  • FIG. 5 is a perspective view of a unit coil 34 that is the minimum unit constituting the stator winding 35.
  • FIG. 6A is a top view of the unit coil 34.
  • FIG. 6B is a front view of the unit coil 34.
  • the stator winding 35 shown in FIG. 4 is configured as a coil cage in which a plurality of unit coils 34 as shown in FIG. 5 are combined.
  • insulating paper 37 for preventing contact between the stator winding 35 and the stator core 30 in the slot 6 is accommodated in the slot 6. It is wound around the slot accommodating portion 34s which is a portion to be formed.
  • One unit coil 34 is accommodated in two slots 6 straddling the plurality of tooth portions 31b.
  • the unit coil 34 is formed of a substantially hexagonal conductor having a substantially rectangular cross section, and is different from the six slot housing portions 34s. It consists of five coil end portions 34 e that connect the end portions of the two slot storage portions 34 s stored in the slot 6 above the end face of the stator core 30.
  • One coil end portion 34e is formed at the upper side in the axial direction of the stator core 30 so that the substantially central portion between the two slot storage portions 34s connected to both ends in the circumferential direction is formed highest in the axial direction. It has two oblique sides 34f1 and f2 that are inclined in the circumferential direction.
  • the central portion in the circumferential direction of the coil end portion 34e is a crank portion 34k for changing the radial position in the slot 6 of the two slot storage portions 34s to which the coil end portion 34e is connected.
  • FIG. 7 is a top view showing details of the crank portion 34k.
  • the crank width L that is the radial displacement width of the crank portion 34k is such that the radial position of the slot housing portion 34s is changed to the outer peripheral side by one wire W forming the unit coil 34.
  • the gap is secured by giving a slight margin to the width.
  • FIG. 8 is a bottom view of the unit coil 34.
  • the three coil end parts 34e be the coil end parts 34e1, 34e2, and 34e3 from the outer peripheral side.
  • the bending radius at both ends in the circumferential direction of the crank portion 34k1 of the coil end portion 34e1 is R1
  • the curvature radius when viewed from the axial direction is R1
  • the curvature radius of the crank portion 34k2 of the coil end portion 34e2 is R2
  • the crank of the coil end portion 34e3 is the same.
  • the crank portions 34k1 to 34k3 are formed so that R1> R2> R3.
  • the radius of curvature of the bent portion is larger in the crank portion existing on the radially outer side than in the crank portion existing on the radially inner side.
  • FIG. 9 is a bottom view of the stator winding 35.
  • FIG. 10 is a partially enlarged view of FIG.
  • the crank portions 34 k 1 are evenly arranged in the circumferential direction when viewed from the center of the stator 3. The same applies to the crank portions 34k2 and 34k3.
  • FIG. 11 is a detailed view of the crank portion 34 k of the unit coil 34.
  • FIG. 12 shows an example in which the curvature radius of the bending portion M1 and the curvature radius of the bending portion M2 are set differently.
  • the radius of curvature Ra1 of the bent portion M1 on the inner peripheral side of the outermost crank portion 134k1 is smaller than the radius of curvature Rb1 of the bent portion M2 on the outer peripheral side of the same crank portion 134k1.
  • FIG. 13 is a diagram showing a portion where the interval Q between one crank part 34k and the other oblique side part 34f1 of the two unit coils 34 inserted in the slots 6 adjacent in the circumferential direction is the shortest.
  • the interval at the position of one crank portion between the wire rods of two unit coils adjacent in the circumferential direction has become smaller toward the inside of the stator winding. For this reason, the distance between the wire rods of the two unit coils inserted into the slots adjacent to each other in the circumferential direction becomes smaller as the crank portion exists inside the stator, and the interphase insulation performance of the portion has deteriorated.
  • the interval Q between the one crank portion 34k and the other oblique side portion 34f1 can be increased, and the insulation performance of the rotating electrical machine 100 can be improved.
  • the radial interval between adjacent unit coils is also narrower toward the inner side, and the unit coils easily interfere with each other.
  • the coil end portion has a shape that increases in the radial direction.
  • the unit coils 34 adjacent to each other in the circumferential direction on the inner side of the stator 3 are arranged in the radial direction of the crank portion 34k. Since the interval can be increased, mutual interference can be easily avoided, and the coil end portion 34e can be lowered. Thereby, since the space
  • slot accommodating portions 34s are arranged and five types of coil end portions 34e are provided. However, the number is appropriately set, and four or more slot accommodating portions 34s and a stator are provided. The present invention is applicable if there are two or more coil end portions 34e on at least one axial end side of the iron core 30.
  • N an integer equal to or greater than 2
  • the radius of curvature of the bent portions M1 and M2 of the outermost crank portion 34k is R1
  • one of the outermost crank portions 34k is The radius of curvature of the bent portions M1 and M2 of the crank portion 34k on the inner peripheral side
  • the radius of curvature of the bent portions M1 and M2 of one crank portion 34k on the inner peripheral side is R3... N from the outermost peripheral side.
  • the ratio of the magnitudes of the respective curvature radii can be set as appropriate, but the difference in the curvature radii ((Rn ⁇ 1) of the bent parts M1 and M2 of the crank part 34k adjacent in the radial direction with respect to the crank width L described above. -(Rn)) is greater than 0 and less than or equal to 2L ⁇ / (number of slots 6), whereby the insulation can be improved.
  • the unit coil 34 disposed in the slot 6 adjacent in the circumferential direction has a value close to the amount in which the circumferential interval Q is reduced (the vicinity of the crank portion 34k is complicated in three dimensions. Exactly different because of shamey).
  • the insulation distance in the circumferential direction between the two unit coils 34 can be maintained by reducing the curvature radii of the bent portions M1 and M2 of the crank portion 34k disposed on the inside accordingly.
  • R1 ⁇ (wire width) ⁇ RN In order to suppress damage to the film, it is preferable to satisfy R1 ⁇ (wire width) ⁇ RN.
  • (Rn / Rn + 1) is set to 0.97 to 0.7 (n is an integer of 1 to N-1), and (R1 / RN) is set to 0.8 to 0.3. Further, it is possible to suppress damage to the coating loss of the wire W while ensuring the insulation distance in the circumferential direction between the unit coils 34 arranged in the slots 6 adjacent in the circumferential direction.
  • a plurality of substantially hexagonal unit coils 34 are arranged concentrically in the circumferential direction to form the stator winding 35.
  • a waveform coil, a U-shaped segment coil, or the like is used.
  • the number of unit coils 34 can be set as appropriate. In this case, the relationship between the radii of curvature of the bent portions M1 and M2 of the crank portions 34k adjacent in the radial direction is set as described above in a state where the plurality of unit coils 34 are combined to form the stator winding 35.
  • a gap 31g is provided between the coil end portions 34e arranged in the radial direction.
  • the interval between two unit coils 34 adjacent in the radial direction can be increased by providing the gap 31g. Can be bigger. Thereby, the insulation of the rotary electric machine 100 can be improved more. Further, since the interval between the unit coils 34 can be increased, the rising angle of the oblique sides 34f1 and 34f2 can be made gentle, so that the axial height of the coil end portion 34e can be reduced.
  • a resin member J such as a varnish (only a part is shown in the drawing) is provided in the gap between the slot accommodating portion 34s and the coil end portion 34e of the stator winding 35 attached to the stator core 30 as shown in FIG. ) May be filled.
  • FIG. 14A and 14B are views showing the wire W before the crank portion 34k is formed.
  • FIG. 14A is a schematic diagram of the unit coil 34 in which the portion corresponding to the coil end top portion 34t that is the joint between the oblique side portion 34f1 and the oblique side portion 34f2 is positioned by the positioning mechanism 50.
  • FIG. The directions corresponding to the axial direction and the radial direction are indicated by arrows.
  • FIG. 14B is a diagram showing the wire W gripped by the crank forming mechanism 60.
  • the directions corresponding to the axial direction and the radial direction are indicated by arrows. Actually, the wire W is held by the positioning mechanism 50 even in this state, but it is not shown for convenience of explanation.
  • the positioning mechanism 50 grips a portion corresponding to the coil end top portion 34 t of one coil end portion 34 e of the unit coil 34 in which the wire W is wound in a substantially hexagonal shape. Position.
  • the crank forming mechanism 60 is used for forming the crank portion 34k.
  • the crank forming mechanism 60 includes a first holding portion 61 and a second holding portion 62 that respectively hold portions other than the portion that becomes the crank portion 34k of the coil end portion 34e from both sides in a direction corresponding to the radial direction. Have.
  • the first holding portion 61 includes a bending die 61a and a pressing die 61b that can move in a direction corresponding to the radial direction, and the second holding portion 62 similarly can be bent in a direction corresponding to the radial direction.
  • FIGS. 15A and 15B are views showing the relative positional relationship between the first holding part 61 and the second holding part 62 after forming the crank part 34k.
  • the first holding portion 61 and the second holding portion 62 are moved in opposite directions in the direction corresponding to the radial direction with the wire W sandwiched therebetween, thereby centering the coil end top portion 34t.
  • the crank portion 34k is formed.
  • the wire W is bent at the curvature radius R along the outer peripheral surfaces of the bending die 61a and the bending die 62a, and the crank portion 34k is formed.
  • maintenance part 62 should just move relatively, only one side may move or both may move.
  • a plurality of crank forming mechanisms 60 are used in accordance with the shape of each coil end portion 34e.
  • the curvature radii of the outer peripheral surfaces of the bending dies 61a and 62a included in each crank forming mechanism 60 are different.
  • the crank portion 34k can be formed with higher accuracy.
  • the stator winding 35 is formed by assembling 48 unit coils 34 thus molded.
  • the number of unit coils 34 can be appropriately set as a design requirement.
  • the wire W may be formed into a corrugated shape or a U-shape, and a similar crank portion may be formed using a plurality of molds corresponding to a plurality of crank shapes.
  • one crank portion 34k and the other of the two unit coils 34 inserted in the slots 6 adjacent in the circumferential direction are also provided.
  • the distance Q between the oblique side portion 34f1 of the first and second slant sides can be increased.
  • the radial interval between the unit coils 34 adjacent in the circumferential direction on the inner side of the stator 3 in the crank portion 34k can be increased.
  • FIG. 16 is a cross-sectional view of coil end portions 234e1 to 234e3 of stator winding 235 of the rotary electric machine according to Embodiment 2 of the present invention. This corresponds to the AA cross section in FIG.
  • FIG. 17 is a cross-sectional view of the coil end portion 234Be of the stator winding 235B that extends straight in the axial direction. Each arrow indicates the upper side in the axial direction and the inner side in the radial direction. Since the configuration other than the stator winding 235 is the same as that of the rotating electrical machine 100 of the first embodiment, the description thereof is omitted.
  • the coil end portions 234e1 to e3 are offset portions OFe11 inclined outward in the radial direction above the end face of the stator core 30 in portions extending axially upward from the slot housing portion 234s. , OFe12, OFe21, OFe22, OFe31.
  • the gap 31g mentioned in the first embodiment is formed in the crank portion 234k.
  • the crank width L2 which is the radial displacement width of the wire W in each of the coil end portions 234e1 to 234e3, is a length obtained by adding the width of one wire and the gap 31g.
  • the offset width H2 indicating the radial displacement width between the outer peripheral side surface of the slot storage portion 234s and the outer peripheral side surface of the coil end portion 234e differs depending on the coil end portions 234e1 to 234e3.
  • the offset width H2 of the end portion is larger.
  • a stator winding 235 is formed by assembling a plurality of such unit coils to the stator core 30.
  • the space factor is the ratio of the cross-sectional area perpendicular to the axial direction of the slot accommodating portion 234Bs accommodated in the slot 6 to the cross-sectional area perpendicular to the axial direction of the slot 6.
  • the space factor of the unit coil in the slot 6 can be increased by providing the coil end portion 234e with the offset portions OFe11 to OFe31 inclined radially outward. it can. Further, by offsetting the coil end portion 234e radially outward, interference between the stator winding 235 and the rotor 2 can be prevented.
  • FIG. 18 is a cross-sectional view of coil end portions 334e1 to 334e3 of stator winding 335 of the rotary electric machine according to Embodiment 3 of the present invention. This corresponds to the AA cross section in FIG. Since other than the stator winding 335 is the same as in the first and second embodiments, the description thereof is omitted.
  • the coil end portions 334e1 to e3 are offset portions inclined inward in the radial direction above the axial end surface of the stator core 30 in portions extending axially upward from the slot accommodating portion 334s.
  • OFe311, OFe321, OFe322, OFe331, and OFe332 are provided.
  • the gap 31g mentioned in the first embodiment is formed in the crank portion 334k.
  • the crank width L3, which is the radial displacement width of the wire W at each coil end portion 334e, is a length obtained by adding the width of one wire and the gap 31g.
  • the offset width H3 indicating the radial displacement width between the inner peripheral side surface of the slot storage portion 334s and the inner peripheral side surface of the coil end portion 334e is different depending on the coil end portions 334e1 to 334e3, and is different from the inner peripheral side.
  • the offset width H3 of the coil end portion on the side is larger.
  • a stator winding 335 is formed by assembling a plurality of such unit coils 334 to the stator core 30.
  • the space factor of the unit coil in the slot 6 can be increased by providing the coil end portion 334e with the offset portions OFe311 to OFe332 that are inclined radially inward. it can. Moreover, it can prevent that the coil end part 334e enlarges to radial direction by offsetting the coil end part 334e to radial inside.
  • FIG. 19 is a cross-sectional view of coil end portions 434e1 to 434e3 of stator winding 435 of the rotary electric machine according to Embodiment 4 of the present invention. This corresponds to the AA cross section in FIG. Except for the stator winding 435, the description is omitted because it is the same as in the first to third embodiments.
  • the coil end portions 334e1 to e3 are respectively inclined to the radially outwardly offset portions OFe411 and OFe412 in the portions extending axially upward from the slot accommodating portion 434s and radially inwardly.
  • the gap 31g mentioned in the first embodiment is formed in the crank portion 434k.
  • the crank width L4 which is the radial displacement width of the wire W at each coil end portion 34e, is a length obtained by adding the width of one wire and the gap 31g.
  • the radial offset width between the inner peripheral side surface of the slot storage portion 434s and the inner peripheral side surface of the coil end portion 434e, or the outer peripheral side surface of the slot storage portion 434s, and the outer periphery of the coil end portion 434e varies depending on the coil end portions 434e1 to 434e3, and has a small radial center and a large radial inner side and outer side.
  • the offset portions OFe 411 to OFe 432 are provided at positions farther upward from the stator core 30 as the offset portions OFe 421 and 422 in the center in the radial direction.
  • a stator winding 435 is formed by assembling a plurality of such unit coils to the stator core 30.
  • the unit in the slot 6 is provided by including the offset portions OFe411 and OFe412 inclined radially outward and the offset portions OFe431 and OFe432 inclined radially inward.
  • the space factor of the coil can be increased.
  • the radially inner coil end portion 434e3 is provided with offset portions OFe431 and OFe432 that are inclined radially inward
  • the radially outer coil end portion 434e1 is provided with offset portions OFe411 and OFe412 that are inclined radially outward.
  • the maximum offset width (radial displacement width) is made smaller than the crank width, and damage to the coil coating during manufacturing can be reduced.
  • FIG. 20A is a top view of the unit coil 534.
  • FIG. 20B is a front view of the unit coil 534.
  • FIG. 21 is a detailed view showing the coil end portion 534e.
  • FIG. 22 is a detailed view showing the bulging portion 534b of the coil end portion 534e.
  • the unit coil 534 will be described with reference to FIGS. As shown in FIGS. 20 and 21, the unit coil 534 protrudes toward the upper side in the axial direction at the center in the circumferential direction of the crank portion 534 k, and has a protruding bulge portion whose rising angle is larger than that of the oblique sides 534 f 1 and 534 f 2. 534b.
  • the rising angle is an angle formed by the axial end surface of the stator core 30 and the respective oblique sides 534f1 and 534f2 as shown in FIG.
  • the bulging portion 534b is provided in the crank portion 534k, and the rising angle ⁇ 4 in the axial direction of the bulging portion 534b is made larger than the rising angle ⁇ 3 of the oblique side portion 534f2, so that Interference between the unit coils 534 housed in the adjacent slots 6 can be easily avoided, and the axial height of the coil end portion 534e can be reduced.
  • FIG. 22 shows a straight portion of the bulging portion 534b.
  • the length X and the rising angle ⁇ 4 of the straight portion in the bulging portion 534b are all the same, and the bent portion M1 of the crank portion 534k.
  • Only the curvature radius of M2 is different for each coil end portion 534e adjacent in the radial direction.
  • a stator winding is formed by assembling a plurality of such unit coils 534.
  • a plurality of values of the length of the straight portion X of the bulging portion 534b and the rising angle ⁇ 4 may be provided in correspondence with the plurality of crank portions 534k.
  • FIG. 23 is a diagram illustrating a processing step of the unit coil 534.
  • FIG. 24 is a perspective view of the bulging portion forming device 70 for forming the bulging portion 534b.
  • a method for manufacturing the unit coil 534 having the bulging portion 534b will be described with reference to FIGS.
  • the convex-shaped bulging part 534b is shape
  • the bulge forming device 70 includes a lower mold 71 having a concave shape, and an upper mold 72 having a convex shape and movable in a direction corresponding to the axial direction with a wire rod sandwiched between the lower mold 71. .
  • a wire is pressed with the lower mold 71 and the upper mold 72 to form the bulging portion 534b.
  • a plurality of sets of bulging portion forming devices 70 corresponding to the bulging portions 534b are arranged in the longitudinal direction of the wire rod, and are formed all at once, thereby forming a plurality of bulging portions 534b without conveying the wire rod. Can do.
  • crank portion is formed in a radial equivalent direction with reference to the bulging portion 534b (step S002: crank forming step).
  • the crank shape is accurately formed by forming each crank portion 534k using a plurality of crank forming mechanisms 60 corresponding to different radii of curvature of the crank portions.
  • step S003 winding forming process
  • step S004 arc forming step
  • step S005 the unit coil 534 is finished forming
  • the substantially hexagonal coil has been described.
  • a waveform coil, a U-shaped segment coil, or the like may be used, and the number of unit coils can be set as appropriate.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Windings For Motors And Generators (AREA)
  • Manufacture Of Motors, Generators (AREA)

Abstract

Une machine électrique tournante (100) est construite de telle sorte que lorsqu'au moins un ensemble de manivelles (34k) adjacentes parmi une pluralité de manivelles (34k) disposées dans une direction radiale est vu à partir d'une direction axiale, le rayon de courbure des parties courbées des manivelles (34k) est plus grand au niveau de la manivelle (34k) présente à l'extérieur dans la direction radiale qu'au niveau de la manivelle (34k) présente à l'intérieur dans la direction radiale, et tous les ensembles de manivelles (34k) qui sont dans une relation de position relativement similaire à l'ensemble de manivelles (34k) lorsqu'on les regarde depuis le centre d'un stator (3) ont une configuration similaire à celle du premier ensemble de manivelles (34k).
PCT/JP2017/024758 2016-07-22 2017-07-06 Machine électrique tournante et procédé de fabrication de bobine unitaire de machine électrique tournante Ceased WO2018016331A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2018528481A JP6576559B2 (ja) 2016-07-22 2017-07-06 回転電機及び、回転電機の単位コイルの製造方法

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016-143853 2016-07-22
JP2016143853 2016-07-22

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WO2018016331A1 true WO2018016331A1 (fr) 2018-01-25

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019193354A (ja) * 2018-04-19 2019-10-31 スズキ株式会社 固定子コイル及びこれを備えた固定子
JP6805396B1 (ja) * 2020-03-17 2020-12-23 株式会社東芝 回転電機の固定子および回転電機
CN113872362A (zh) * 2021-09-30 2021-12-31 厦门势拓御能科技有限公司 一种新型扁线及定子组件、制造方法、扁线电机
JP2024163846A (ja) * 2023-05-12 2024-11-22 躍科智能制造（无錫）有限公司 平角線モータステータ銅線成形装置
WO2025104947A1 (fr) * 2023-11-14 2025-05-22 株式会社日立産機システム Machine électrique rotative et procédé de production de stator dans une machine électrique rotative
JP7796150B6 (ja) 2023-05-12 2026-01-08 躍科智能制造（无錫）有限公司 平角線モータステータ銅線成形装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011074114A1 (fr) * 2009-12-18 2011-06-23 トヨタ自動車株式会社 Stator
JP2013187951A (ja) * 2012-03-06 2013-09-19 Aisin Aw Co Ltd 巻線成形装置および巻線成形方法
JP2013198380A (ja) * 2012-03-23 2013-09-30 Hitachi Automotive Systems Ltd 回転電機
JP2016039660A (ja) * 2014-08-06 2016-03-22 三菱電機株式会社 回転電機の固定子コイルおよび回転電機の固定子コイルの製造方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011074114A1 (fr) * 2009-12-18 2011-06-23 トヨタ自動車株式会社 Stator
JP2013187951A (ja) * 2012-03-06 2013-09-19 Aisin Aw Co Ltd 巻線成形装置および巻線成形方法
JP2013198380A (ja) * 2012-03-23 2013-09-30 Hitachi Automotive Systems Ltd 回転電機
JP2016039660A (ja) * 2014-08-06 2016-03-22 三菱電機株式会社 回転電機の固定子コイルおよび回転電機の固定子コイルの製造方法

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6996407B2 (ja) 2018-04-19 2022-01-17 スズキ株式会社 固定子コイル及びこれを備えた固定子
JP2019193354A (ja) * 2018-04-19 2019-10-31 スズキ株式会社 固定子コイル及びこれを備えた固定子
CN113692686B (zh) * 2020-03-17 2023-08-29 株式会社东芝 旋转电机的定子以及旋转电机
CN113692686A (zh) * 2020-03-17 2021-11-23 株式会社东芝 旋转电机的定子以及旋转电机
WO2021186594A1 (fr) * 2020-03-17 2021-09-23 株式会社 東芝 Stator pour machine électrique tournante et machine électrique tournante
JP6805396B1 (ja) * 2020-03-17 2020-12-23 株式会社東芝 回転電機の固定子および回転電機
EP4123883A4 (fr) * 2020-03-17 2023-11-22 Kabushiki Kaisha Toshiba Stator pour machine électrique tournante et machine électrique tournante
US11929653B2 (en) 2020-03-17 2024-03-12 Kabushiki Kaisha Toshiba Stator of rotary electric machine and rotary electric machine
CN113872362A (zh) * 2021-09-30 2021-12-31 厦门势拓御能科技有限公司 一种新型扁线及定子组件、制造方法、扁线电机
JP2024163846A (ja) * 2023-05-12 2024-11-22 躍科智能制造（无錫）有限公司 平角線モータステータ銅線成形装置
JP7796150B2 (ja) 2023-05-12 2026-01-08 躍科智能制造（无錫）有限公司 平角線モータステータ銅線成形装置
JP7796150B6 (ja) 2023-05-12 2026-01-08 躍科智能制造（无錫）有限公司 平角線モータステータ銅線成形装置
WO2025104947A1 (fr) * 2023-11-14 2025-05-22 株式会社日立産機システム Machine électrique rotative et procédé de production de stator dans une machine électrique rotative

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