WO2015141377A1 - Bobine de machine électrique tournante - Google Patents

Bobine de machine électrique tournante Download PDF

Info

Publication number
WO2015141377A1
WO2015141377A1 PCT/JP2015/054753 JP2015054753W WO2015141377A1 WO 2015141377 A1 WO2015141377 A1 WO 2015141377A1 JP 2015054753 W JP2015054753 W JP 2015054753W WO 2015141377 A1 WO2015141377 A1 WO 2015141377A1
Authority
WO
WIPO (PCT)
Prior art keywords
concentric winding
coil
concentric
series
phase
Prior art date
Application number
PCT/JP2015/054753
Other languages
English (en)
Japanese (ja)
Inventor
河野勝一
菅原純一
Original Assignee
アイシン・エィ・ダブリュ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by アイシン・エィ・ダブリュ株式会社 filed Critical アイシン・エィ・ダブリュ株式会社
Publication of WO2015141377A1 publication Critical patent/WO2015141377A1/fr

Links

Images

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
    • H02K3/28—Layout of windings or of connections between windings
    • 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
    • H02K3/12—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots

Definitions

  • the present invention is configured by being wound around a core having a plurality of slots dispersedly arranged in the circumferential direction of a cylindrical core reference surface, and a phase coil corresponding to each of a plurality of phases is star-connected.
  • the present invention relates to a rotating electrical machine coil.
  • Patent Document 1 As a coil for a rotating electric machine as described above, one described in Japanese Patent No. 4665595 (Patent Document 1) is known.
  • Patent Document 1 a configuration including two series coil parts (series coil A and series coil B shown in FIG. 5 of the document) in which phase coils are connected in parallel to each other is formed by the two series coil parts.
  • Patent Document 2 Japanese Patent No. 4617992 (Patent Document 2) also describes a similar technique.
  • the coil is wound around a core having a plurality of slots distributed in the circumferential direction of a cylindrical core reference surface, and a phase coil corresponding to each of a plurality of phases is star-connected.
  • Each of the phase coils includes a series coil portion in which a plurality of concentric winding portions are connected in series, and the plurality of concentric windings constituting the series coil portion.
  • Each of the concentric winding portions has a circumferential arrangement area that is set so as not to overlap with the circumferential arrangement area of the end-side concentric winding portion of the other phase.
  • each of the end side concentric winding portions has two different phases.
  • the phase coils are arranged on the end side of a series circuit in which the phase coils are connected in series via a neutral point. Therefore, the potential difference between the phase coils of two different phases is likely to increase between the respective end side concentric windings of the two phases.
  • each circumferential arrangement region of the end side concentric winding part has a portion overlapping with the circumferential arrangement region of the end side concentric winding part of the other phase
  • the phase coils of the phases different from each other the maximum potential difference between the phase coils in the portion arranged in contact with or close to the coil end portion can be suppressed.
  • the insulation performance required for the interphase insulating member is reduced, or the electrical insulation between the phase coils of each phase is achieved only by the insulating film formed on the surface of the coil without providing the interphase insulating member. Therefore, it is possible to reduce both the manufacturing cost of the rotating electrical machine and the size of the coil end portion.
  • the phase coil includes a plurality of the series coil portions connected in parallel with each other, and the connecting conductors connecting the two concentric winding portions connected in series with each other in the series coil portion are in the same phase.
  • the target concentric winding portion is set to a concentric winding portion other than the end-side concentric winding portion, so that the winding portion can be provided on the connecting wire while suppressing an increase in the maximum potential difference.
  • the target concentric winding part is set to the concentric winding part that constitutes the end side concentric winding part
  • the concentric winding part connected to the neutral point side with respect to the end side concentric winding part is used.
  • the potential difference between a certain adjacent concentric winding portion and the neutral point is increased by the amount that the number of turns of the target concentric winding portion is set to be reduced by the number of turns of the winding portion.
  • region of the edge part side concentric winding part may not have a part which overlaps with the circumferential arrangement
  • the target concentric winding portion is set to a concentric winding portion other than the end side concentric winding portion, the adjacent concentric winding portion and the neutral point can increase the maximum potential difference.
  • the winding portion can be provided on the connecting wire while suppressing an increase in potential difference between the first and second wires. Furthermore, according to the above configuration, the number of windings of the target concentric winding part is set to be smaller by the number of windings of the winding part than that of the concentric winding part that is not the target concentric winding part. It is possible to make the number of times constant, and to reduce the volume of the coil disposed on the outer side in the axial direction with respect to the core by the amount that a part of the connecting wire is wound in the slot.
  • positioned on the outer side of an axial direction with respect to a core is made into a connection conducting wire, suppressing the increase in said maximum potential difference. Can be provided. Therefore, it is possible to further reduce the size of the coil end portion.
  • the series coil portion includes a first concentric winding portion and a second concentric winding portion that are the concentric winding portions whose winding directions are opposite to each other, and the first concentric winding portion and the second concentric winding portion.
  • the winding portions are connected in series so as to be alternately arranged one by one, and the winding direction of the winding portion is the circumference of the two extending portions of the connecting wire extending from both ends of the winding portion.
  • the target concentric winding portion is set from one of the first concentric winding portion and the second concentric winding portion so that the arrangement region in the direction is a winding direction that does not overlap each other.
  • the winding portion on the connecting wire so that the volume of the coil disposed on the outer side in the axial direction with respect to the core is reduced, and the coil end portion can be further reduced in size. Can do. Further, according to the above configuration, the first concentric winding portion and the second concentric winding portion whose winding directions are opposite to each other are alternately connected in series one by one, so that the series coil portion is configured. It is also possible to relax the restrictions on the winding device, such as using a winding device.
  • the target concentric winding portion is a predetermined selection from a plurality of the concentric winding portions disposed between the circumferential directions of the two concentric winding portions connected by the connection conducting wire.
  • the connection conductor is a first extension portion extending from one end of the winding portion to the concentric winding portion of one connection target, and the other connection target from the other end of the winding portion A second extending portion extending to the concentric winding portion, and when there are a plurality of the concentric winding portions satisfying the selection condition, the circumferential direction of the two concentric winding portions to be connected by the connection conductors It is preferable that the difference between the extension lengths in the circumferential direction of each of the first extension portion and the second extension portion is set as the target concentric winding portion. .
  • the winding portion can be provided on the connecting wire while appropriately ensuring the manufacturing quality of the rotating electrical machine.
  • the first extension part and the second extending part are secured in order to ensure the manufacturing quality of the rotating electrical machine. It is required to avoid contact with the phase coil of the other phase of the extending portion and to suppress the degree of the contact to be low.
  • the N concentric winding portions (N represents an integer of 1 or more) continuous from the end portion side opposite to the neutral point are used as the end side concentric winding portions, and
  • the number of slots formed is J
  • the number of slots overlapping with the circumferential arrangement region of one concentric winding is K
  • the number of series coil portions included in one phase coil is L.
  • the value of the integer part of ⁇ J / (K ⁇ L ⁇ M) ⁇ when the number of phases is M is preferably N.
  • region of the edge part concentric winding part of another phase The number of concentric winding portions constituting the end side concentric winding portion can be set large. Therefore, the maximum potential difference can be appropriately reduced.
  • FIG. 1 It is an axial view of a stator according to an embodiment of the present invention. It is a connection diagram of the coil which concerns on embodiment of this invention. It is a simplification figure of the series coil part concerning the embodiment of the present invention. It is an expanded view of the several series coil part with which the phase coil which concerns on embodiment of this invention is equipped. It is an expanded view of the several phase coil with which the coil which concerns on embodiment of this invention is equipped.
  • Embodiments of a rotating electrical machine coil according to the present invention will be described with reference to the drawings.
  • the case where the coil for rotating electrical machines according to the present invention is applied to a coil 1 wound around a core 11 (stator core) of a stator 10 for rotating electrical machines as shown in FIG. 1 will be described as an example.
  • the “rotary electric machine” is used as a concept including any of a motor (electric motor), a generator (generator), and a motor / generator functioning as both a motor and a generator as necessary.
  • the “axial direction”, “circumferential direction C”, and “radial direction R” are based on the cylindrical core reference plane S, in other words, the core The axis A of the reference surface S is defined as a reference (see FIG. 1).
  • the “circumferential first direction C1” represents a direction toward one side in the circumferential direction C
  • the “circumferential second direction C2” represents a direction toward the other side in the circumferential direction C (a direction opposite to the circumferential first direction C1).
  • terms relating to dimensions, arrangement direction, arrangement position, etc. are used as a concept including a state having a difference due to an error (an error that is acceptable in manufacturing). .
  • the stator 10 is a stator for a rotating electrical machine, and includes a core 11 and a coil 1 wound around the core 11 as shown in FIG.
  • the core 11 is formed using a magnetic material.
  • a core 11 is formed by laminating a plurality of magnetic plates (for example, electromagnetic steel plates such as silicon steel plates), or a powder material formed by pressing a magnetic material powder is a main component.
  • the core 11 is formed.
  • the stator 10 is a stator for a rotating field type rotating electrical machine, and functions as an armature. A magnetic field generated from the stator 10 rotates a rotor (not shown) as a field including a permanent magnet or an electromagnet.
  • the rotor is disposed inside the radial direction R with respect to the core 11.
  • the core 11 has a plurality of slots 12 distributed in the circumferential direction C.
  • the plurality of slots 12 are arranged at regular intervals along the circumferential direction C.
  • Each of the slots 12 is formed to extend in the axial direction and the radial direction R.
  • each of the slots 12 has openings on both sides in the axial direction and has openings on the inner side in the radial direction R.
  • Teeth 13 are formed between slots 12 adjacent to each other in the circumferential direction C, and the inner peripheral surface of the core 11 is formed by a cylindrical virtual surface including the inner end surfaces of the plurality of teeth 13 in the radial direction R.
  • the inner peripheral surface of the core 11 is the core reference surface S.
  • the outer surface (outer peripheral surface) in the radial direction R of the core 11 may be used as the core reference surface S.
  • the coil 1 is a multi-phase coil, and a slot 12 for each phase is arranged in the core 11 so as to repeatedly appear along the circumferential direction C.
  • the coil 1 is a three-phase coil, and includes three phase coils 2 including a U-phase coil 2U, a V-phase coil 2V, and a W-phase coil 2W.
  • the U-phase, V-phase, and W-phase slots 12 are arranged in the core 11 so as to repeatedly appear in the circumferential direction C.
  • the number of slots per phase per pole is “2”
  • the core 11 is arranged such that two slots 12 for each phase appear repeatedly along the circumferential direction C.
  • the coil 1 is configured using a linear conductor (not shown) which is a linear conductor.
  • the linear conductor is made of a conductive material such as copper or aluminum.
  • a linear conductor for example, a linear conductor having a circular cross section perpendicular to the extending direction can be used.
  • an insulating film made of an electrically insulating material such as resin is formed on the surface of the linear conductor.
  • each of the phase coils 2 includes a first concentric winding portion 41 and a second concentric winding portion 42 that are concentric winding portions whose winding directions are opposite to each other in the circumferential direction C.
  • the magnetic pole pitch P is alternately provided. That is, the several concentric winding part with which the one phase coil 2 is provided is arrange
  • the magnetic pole pitch P is six times the slot pitch (arrangement pitch of the slots 12).
  • the first concentric winding portion 41 is hatched in order to easily distinguish the first concentric winding portion 41 and the second concentric winding portion 42.
  • the winding direction of two concentric winding parts is reverse, that is, the phase coil along the extending direction of the linear conductor constituting the phase coil 2 (in other words, along the direction of the current flowing through the phase coil 2).
  • the first concentric winding portion 41 and the second concentric winding portion 42 form magnetic poles that are opposite to each other when the coil 1 is energized.
  • the concentric winding portion is a coil portion (overlapping winding portion) formed by winding a linear conductor or a bundle of linear conductors a plurality of times between a pair or a plurality of pairs of slots 12.
  • each of the first concentric winding portion 41 and the second concentric winding portion 42 is formed between a pair of slots 12 (in this example, between a pair of slots 12 separated from each other by 5 times the slot pitch).
  • a bundle of linear conductors or linear conductors is wound a plurality of times.
  • the coil 1 is formed by star connection of phase coils 2 (in this example, a U-phase coil 2U, a V-phase coil 2V, and a W-phase coil 2W) corresponding to each of a plurality of phases. It is configured. That is, one end of each of the phase coils 2 is connected to a connection terminal 90 set for each phase, and the other end of each of the phase coils 2 is connected to each other at a neutral point 91.
  • the connection terminal 90 is a terminal for connecting the coil 1 to a device (for example, an inverter) that exchanges power with the stator 10. When the rotating electrical machine is powered, electric power is input to the connection terminal 90 from the device side.
  • connection terminal 90 a U-phase connection terminal 90U, a V-phase connection terminal 90V, and a W-phase connection terminal 90W corresponding to each of the three phases are provided.
  • FIG. 1 for ease of understanding, it is assumed that each concentric winding is directed from the connection terminal 90 side toward the neutral point 91 side along the extending direction of the linear conductors constituting the phase coil 2.
  • a portion that faces the back side of the paper by a white circle with an “X” -shaped symbol inside, and a portion that faces the front side of the paper by a white circle with a dot-like symbol inside Is shown.
  • the coil when going from the connection terminal 90 side toward the neutral point 91 side along the extending direction of the linear conductor constituting the phase coil 2, the coil is wound in the clockwise direction when viewed from the inside of the radial direction R.
  • the concentric winding portion to be wound is referred to as a first concentric winding portion 41
  • the concentric winding portion wound in the counterclockwise direction when viewed from the inside in the radial direction R is referred to as a second concentric winding portion 42.
  • Each of the phase coils 2 includes the same number of first concentric winding parts 41 as the number of magnetic pole pairs (8 in this example) and the same number of second concentric winding parts 42 as the number of magnetic pole pairs.
  • the U-phase coil 2U, the V-phase coil 2V, and the W-phase coil 2W are arranged in a positional relationship shifted from each other in the circumferential direction C.
  • the V-phase coil 2V is arranged with a positional relationship shifted by four times the slot pitch on the first circumferential direction C1 side with respect to the U-phase coil 2U.
  • each turn part of the phase coil 2 is arrange
  • the turn part is a part of a concentric winding part protruding in the axial direction from the core 11.
  • a turn portion of the U-phase coil 2U, a turn portion of the V-phase coil 2V, and a turn portion of the W-phase coil 2W are arranged in order from the outside in the radial direction R.
  • the A coil end portion that is a portion of the coil 1 that protrudes in the axial direction from the core 11 is formed by the turn portion and a connecting conductor 30 (see FIGS. 2 and 3) described later.
  • Each of the phase coils 2 includes a series coil portion 20 configured by connecting a plurality of concentric winding portions in series with each other.
  • the series coil unit 20 includes the first concentric winding part 41 and the second concentric winding part 42, and the first concentric winding part 41 and the second concentric winding part 42 alternately. It is configured in series connection.
  • each of the series coil portions 20 includes two first concentric winding portions 41 and two second concentric winding portions 42.
  • the series coil part 20 is a connection which connects two concentric winding parts (the 1st concentric winding part 41 and the 2nd concentric winding part 42 in this example) mutually connected in series.
  • a conducting wire 30 is provided.
  • some of the connecting conductors 30 include a winding portion 33.
  • some of the connection conductors 30 are disposed not on the whole connection conductor 30 but on the outer side in the axial direction with respect to the core 11.
  • the connecting wire 30 is omitted for simplification.
  • each of the phase coils 2 includes a plurality of series coil portions 20 connected in parallel to each other as shown in FIG.
  • the V-phase coil 2V and the W-phase coil 2W are shown in a simplified manner, but each of the V-phase coil 2V and the W-phase coil 2W is also connected in parallel to each other in the same manner as the U-phase coil 2U.
  • a plurality of series coil portions 20 are provided.
  • the number of series coil units 20 connected in parallel to each other is “4”
  • each of the phase coils 2 includes a first series coil unit 21, a second series coil unit 22, and a third series coil unit. 23 and four series coil portions 20 of the fourth series coil portion 24 are provided.
  • FIG. 3 is a simplified diagram of the first series coil portion 21 of the U-phase coil 2U.
  • first series coil portion 51 a first coil portion 51, a second coil portion 52, and a third coil portion in order to facilitate comparison with FIG. 3.
  • symbol showing the 4th coil part 54 are attached
  • FIG. 1 is a simplified diagram of the first series coil portion 21 of the U-phase coil 2U.
  • FIG. 1 only the first series coil portion 21 of the U-phase coil 2 ⁇ / b> U shown in FIG. 3 is provided with a first coil portion 51, a second coil portion 52, and a third coil portion in order to facilitate comparison with FIG. 3.
  • symbol showing the 4th coil part 54 are attached
  • FIG. 1 is a simplified diagram of the first series coil portion 21 of the U-
  • each of the plurality of series coil portions 20 provided in the U-phase coil 2U is developed in a planar shape in the circumferential direction C so that the inner side in the radial direction R is the front side of the drawing.
  • the reference “41” indicating the first concentric winding and the reference “42” indicating the second concentric winding are not attached.
  • the coil when going from the connection terminal 90 side toward the neutral point 91 side along the extending direction of the linear conductor constituting the phase coil 2, the coil is wound in the clockwise direction when viewed from the inner side in the radial direction R.
  • the concentric winding portion is the first concentric winding portion, and the concentric winding portion wound in the counterclockwise direction when viewed from the inside in the radial direction R is the second concentric winding portion.
  • each of the plurality of concentric winding portions is connected to the series coil portion 20 disposed on the circumferential first direction C1 side with respect to the other concentric winding portions adjacent to the connection terminal 90 side in the electrical connection relationship.
  • a series coil portion (X represents an odd number) is provided, and each of the plurality of concentric winding portions is disposed on the second circumferential direction C2 side with respect to the other concentric winding portions adjacent to the connection terminal 90 side in the electrical connection relationship.
  • the serial coil portion 20 is referred to as a Y-th serial coil portion (Y represents an even number).
  • each of the phase coils 2 includes a first series coil part 21 and a third series coil part 23 as the Xth series coil part, and a second series coil part 22 and a first series coil part as the Yth series coil part.
  • Four series coil portions 24 are provided.
  • the individual concentric winding portions are referred to as end side concentric winding portions 44.
  • the concentric winding portion constituting the end portion on the connection terminal 90 side among the plurality of concentric winding portions constituting the series coil portion 20 is defined as the end side concentric winding portion 44. That is, N concentric winding portions (N represents an integer of 1 or more) continuous from the end side on the connection terminal 90 side among the plurality of concentric winding portions provided in the series coil portion 20 are end side concentric winding portions.
  • each of the series coil portions 20 includes a first coil portion 51, a second coil portion 52, a third coil portion 53, and a fourth coil portion 54.
  • the 1st coil part 51 and the 3rd coil part 53 are the 1st concentric winding part 41.
  • the second coil part 52 and the fourth coil part 54 are constituted by the second concentric winding part 42.
  • the first coil part 51 and the third coil part 53 are constituted by the second concentric winding part 42, and the second coil The part 52 and the fourth coil part 54 are constituted by the first concentric winding part 41.
  • the V-phase coil 2V as shown in FIG.
  • FIG. 5 shows the phase coils 2 (U-phase coil 2U, V-phase coil 2V, and W-phase coil 2W) provided in the coil 1 in the circumferential direction so that the inner side in the radial direction R is the front side of the drawing.
  • FIG. 5 in order to avoid complication, a symbol “51” representing the first coil portion, a symbol “52” representing the second coil portion, a symbol “53” representing the third coil portion, and the fourth coil portion are represented.
  • the first coil portion and the second coil portion are arranged in order from the concentric winding portion on the connection terminal 90 side along the extending direction of the linear conductor constituting the phase coil 2. They are a coil part, a 3rd coil part, and a 4th coil part.
  • the first coil portion 51 and the third coil portion 53 are formed by the second concentric winding portion 42.
  • the second coil part 52 and the fourth coil part 54 are constituted by the first concentric winding part 41.
  • the first coil part 51 and the third coil part 53 are constituted by the first concentric winding part 41, and the second coil The part 52 and the fourth coil part 54 are constituted by the second concentric winding part 42.
  • each of the first concentric winding portions 41 is opposed to the other first concentric winding portions 41 constituting the same series coil portion 20 as the first concentric winding portion 41 in the radial direction R.
  • each of the second concentric winding portions 42 is opposed to the other second concentric winding portion 42 constituting the same series coil portion 20 as the second concentric winding portion 42 in the radial direction R. Is arranged.
  • being opposed to the radial direction R means that the arrangement regions of the concentric winding portions are different from each other by 180 degrees with respect to the position in the circumferential direction C of the core 11.
  • each of the plurality of concentric winding portions constituting the series coil portion 20 is opposed to the other concentric winding portion (the winding direction is the same direction) constituting the series coil portion 20 in the radial direction R.
  • the reference reverse in the state in which the rotor is arranged concentrically with respect to the stator 10 The fact that the magnitude and direction of the back electromotive voltage change from the electromotive voltage is non-uniform among the plurality of series coil parts 20 constituting the in-phase parallel circuit, This can be suppressed as compared with the case where the concentric winding portions are concentrated on a partial region in the circumferential direction C.
  • the counter electromotive voltage in the series coil unit 20 is generated with the rotation of the rotor. As a result, generation of circulating current in a parallel circuit formed by a plurality of in-phase series coil units 20 can be suppressed, or even when circulating current is generated in the parallel circuit, the size is reduced. can do.
  • the second coil unit 53 and the fourth coil unit 54 are arranged in this order, and the second series coil unit 22 has a first coil unit 51, a second coil unit 52, and a third coil unit 53 toward the circumferential second direction C2.
  • the fourth coil portion 54 are arranged in this order.
  • the second coil portion 52 is a concentric winding portion disposed adjacent to the first coil portion 51 in the circumferential direction C. It is.
  • the first coil portion 51 of the second series coil portion 22 is concentrically wound adjacent to the first coil portion 51 of the first series coil portion 21 on the circumferential second direction C2 side.
  • the 3rd series coil part 23 is comprised similarly to the 1st series coil part 21 except the arrangement position of the circumferential direction C, and in this example, the 3rd series coil part 23 is The first series coil portion 21 is disposed on the second circumferential direction C2 side in a positional relationship shifted by 6 times the magnetic pole pitch P.
  • the 4th series coil part 24 is comprised similarly to the 2nd series coil part 22 except the arrangement position of the circumferential direction C, and the 4th series coil part 24 is set to the 2nd series coil part 22 in this example.
  • they are arranged on the first circumferential direction C1 side in a positional relationship shifted by 6 times the magnetic pole pitch P.
  • each first coil portion 51 of the first series coil portion 21 and the second series coil portion 22 is constituted by two concentric winding portions arranged adjacent to each other in the circumferential direction C. Is done.
  • the first coil part 51 of the third series coil part 23 or the fourth series coil part 24 is in the circumferential direction C with respect to the first coil part 51 of the first series coil part 21 or the second series coil part 22. It is constituted by concentric winding portions that are not adjacent to each other and are spaced apart by at least twice the magnetic pole pitch P.
  • the first coil parts 51 of the third series coil part 23 and the fourth series coil part 24 are not adjacent to the circumferential direction C and are spaced apart by at least twice the magnetic pole pitch P. Consists of two concentric windings.
  • the separation distance in the circumferential direction C of the two concentric winding portions is the separation distance of the center position in the circumferential direction C of each concentric winding portion.
  • the V-phase coil 2 ⁇ / b> V is configured in the same manner as the U-phase coil 2 ⁇ / b> U except for the arrangement position in the circumferential direction C. That is, each of the first series coil unit 21, the second series coil unit 22, the third series coil unit 23, and the fourth series coil unit 24 included in the V-phase coil 2V is except for the arrangement position in the circumferential direction C.
  • the first series coil portion 21, the second series coil portion 22, the third series coil portion 23, and the fourth series coil portion 24 of the U-phase coil 2U are configured in the same manner.
  • the corresponding concentric winding part for example, the first coil part 51 of the first series coil part 21 of the U-phase coil 2U.
  • the winding directions of the first coil portion 51 of the first series coil portion 21 of the W-phase coil 2W are opposite to each other, and the arrangement configuration of the winding portion 33 (details will be described later) are different. Except for this, the configuration is the same as that of the U-phase coil 2U.
  • the first coil portion 51, the second coil portion 52, the third coil portion 53, and the fourth coil portion 54 are directed toward the circumferential first direction C1.
  • the W-phase coil 2W is the same as the U-phase coil 2U in that they are arranged in this order.
  • the third series coil unit 23 is configured in the same manner as the first series coil unit 21 except for the arrangement position in the circumferential direction C, and the third series coil unit 23 is formed in the first series coil unit 21.
  • the fourth series coil portion 24 is disposed on the second circumferential direction C2 side in a positional relationship shifted by 6 times the magnetic pole pitch P, and the fourth series coil portion 24 is arranged in the second series coil portion except for the arrangement position in the circumferential direction C. 22, and the fourth series coil portion 24 is arranged in a positional relationship shifted by 6 times the magnetic pole pitch P on the circumferential first direction C1 side with respect to the second series coil portion 22.
  • the W-phase coil 2W is the same as the U-phase coil 2U.
  • the first coil part 51 provided in the first series coil part 21 and the third series coil part 23 of the U-phase coil 2U is the first concentric winding part 41
  • the second series coil part 22 of the U-phase coil 2U and The first coil part 51 provided in the fourth series coil part 24 is the second concentric winding part 42
  • the first coil provided in the first series coil part 21 and the third series coil part 23 of the W-phase coil 2W is the second concentric winding part 42
  • the first coil part 51 provided in the second series coil part 22 and the fourth series coil part 24 of the W-phase coil 2 ⁇ / b> W is the first concentric winding part 41.
  • each of the U-phase coil 2U, the V-phase coil 2V, and the W-phase coil 2W has an arrangement region in the circumferential direction C of the end side concentric winding portion 44, and the end side of the other phase. It arrange
  • the arrangement area in the circumferential direction C of each end side concentric winding part 44 is set so as not to overlap with the arrangement area in the circumferential direction C of the end side concentric winding part 44 of the other phase. Yes.
  • each of the phase coils 2 includes four end-side concentric winding portions 44 corresponding to the provision of the four series coil portions 20. Therefore, in this embodiment, as shown in FIG.
  • each of the end regions of each phase that is, the U-phase end region 80U, the V-phase end region 80V, and the W-phase end region 80W has four
  • the end side concentric winding portion 44 (in this example, the first coil portion 51) is formed by the sum of the arrangement regions in the circumferential direction C.
  • the arrangement order in the circumferential direction C of the first coil part 51, the second coil part 52, the third coil part 53, and the fourth coil part 54 of each series coil part 20 is the phase coil of each phase. Common between the two. Therefore, as shown in FIG. 5, the end region of each phase is formed in the same manner except for the formation position in the circumferential direction C. That is, the end region of each phase is formed so as to completely overlap each other when shifted in the circumferential direction C.
  • the end side concentric winding portion 44 is at least one (1 in this example) continuous from the end side on the connection terminal 90 side among the plurality of concentric winding portions constituting the series coil portion 20.
  • the arrangement region in the circumferential direction C of the end-side concentric winding portion 44 has a portion overlapping with the arrangement region in the circumferential direction C of the end-side concentric winding portion 44 of the other phase. It is set not to. That is, each of the end-side concentric winding portions 44 is disposed in a region in a circumferential direction C different from that of the other-phase end-side concentric winding portion 44 where the potential difference between the end-side concentric winding portions 44 tends to increase. Is done.
  • region of the circumferential direction C of the edge part side concentric winding part 44 has a part which overlaps with the arrangement
  • the maximum potential difference between the phase coils 2 at a portion where the phase coils 2 are arranged in contact with or close to each other at the coil end portion can be suppressed.
  • the electrical performance between the phase coils 2 of each phase can be reduced only by the insulating film formed on the surface of the linear conductor without reducing the insulation performance required for the interphase insulating member or without providing the interphase insulating member.
  • the interphase insulating member is a member (for example, a sheet-like member) formed of a member having electrical insulation, and is used to ensure electrical insulation between the phase coils 2 of different phases. It is done.
  • the connecting wire 30 includes a winding portion 33 that is wound concentrically around the target concentric winding portion 43.
  • the target concentric winding part 43 is a concentric winding part (the first concentric winding part 41 or the second concentric winding part 42) that constitutes another series coil part 20 of the same phase.
  • the “other series coil unit 20” is a series coil unit 20 that is different from the series coil unit 20 in which the connection conducting wire 30 is provided.
  • the winding direction of the winding part 33 is set in the same direction as the winding direction of the target concentric winding part 43. That is, when the coil 1 is energized, the winding portion 33 forms a magnetic pole in the same direction as the target concentric winding portion 43.
  • the number of turns of the target concentric winding part 43 is set to be smaller by the number of turns of the winding part 33 than the concentric winding part that is not the target concentric winding part 43. Therefore, the number of turns in each slot 12 of the core 11 is constant.
  • the winding number of the winding unit 33 is set to “1”.
  • only a part of the connection conductors 30 (three connection conductors in this example) included in the series coil unit 20 includes the winding part 33.
  • the target concentric winding portion 43 includes a plurality of concentric winding portions disposed between the circumferential directions C of two concentric winding portions (the first concentric winding portion 41 and the second concentric winding portion 42) connected by the connection conductor 30.
  • the setting is made based on a predetermined selection condition.
  • a first selection condition and a second selection condition are set as selection conditions, and the selection condition is satisfied by satisfying both the first selection condition and the second selection condition.
  • the first selection condition is a condition that a concentric winding portion other than the end side concentric winding portion 44 is used. That is, in the present embodiment, the target concentric winding portion 43 is set to a concentric winding portion other than the end side concentric winding portion 44. As shown in FIGS.
  • the connecting wire 30 includes a first extending portion 31 extending from one end of the winding portion 33 to one concentric winding portion to be connected, and the other end of the winding portion 33. And a second extending portion 32 extending to the other concentric winding portion to be connected.
  • the first extending portion 31 extends from one end of the winding portion 33 (the end portion on the first concentric winding portion 41 side to be connected in the electrical connection relationship) to the first concentric winding portion 41 to be connected.
  • the second extending portion 32 extends from the other end of the winding portion 33 (the end portion on the second concentric winding portion 42 side to be connected in the electrical connection relationship) from the second concentric winding portion to be connected.
  • 42 is a portion extending to 42.
  • the second selection condition is set such that the arrangement regions in the circumferential direction C of the first extending portion 31 and the second extending portion 32 do not overlap each other. That is, in the present embodiment, the winding direction of the winding portion 33 is such that the two extending portions (the first extending portion 31 and the second extending portion 32) of the connection conducting wire 30 extending from both ends of the winding portion 33.
  • the concentric winding portion 43 is set from one of the first concentric winding portion 41 and the second concentric winding portion 42 so that the arrangement region in the circumferential direction C of FIG.
  • the first coil portion 51 constitutes the end-side concentric winding portion 44, the second coil portion 52 and the third coil portion which are coil portions other than the first coil portion 51.
  • Each of 53 and the fourth coil portion 54 satisfies the first selection condition.
  • the first coil portion 20 that has a circumferential first direction C ⁇ b> 1 in the direction from the first coil portion 51 to the second coil portion 52 along the circumferential direction C is the first
  • the concentric winding portion 41 satisfies the second selection condition
  • the direction from the first coil portion 51 to the second coil portion 52 along the circumferential direction C is the circumferential second direction C2 as in the second series coil portion 22.
  • the second concentric winding portion 42 satisfies the second selection condition for the series coil portion 20 that becomes the following.
  • the target concentric windings when there are a plurality of concentric windings that satisfy the above selection conditions between the circumferential directions C of the two concentric windings connected by the connecting wire 30, in other words, the target concentric windings
  • there are a plurality of candidate concentric windings 43 there are two concentric windings (first concentric winding part 41 and second concentric winding part 42) to be connected by the connecting conductor 30 between the circumferential directions C.
  • the concentric winding portion in which the difference in the extending length in the circumferential direction C between each of the first extending portion 31 and the second extending portion 32 is the smallest is set as the target concentric winding portion 43. That is, in the present embodiment, one connection conductor 30 includes one winding portion 33.
  • the extending length in the circumferential direction C of the first extending portion 31 and the second extending portion 32 between the circumferential directions C of the two concentric winding portions to be connected by the connecting conductor 30 is as follows. It is set as the extension length in the area
  • the extension length of the circumferential direction C of the 1st extension part 31 or the 2nd extension part 32 means the extension length in this area
  • the first series coil portion 21 of the U-phase coil 2U will be specifically described with reference to FIGS. 3 and 4.
  • three concentric windings satisfying the above selection conditions are arranged.
  • the third coil portion 53 of the third series coil portion 23, the second coil portion 52 of the fourth series coil portion 24, and the first Three concentric winding portions with the fourth coil portion 54 of the two series coil portions 22 satisfy the above selection condition.
  • the extension of each circumferential direction C of the 1st extension part 31 and the 2nd extension part 32 When the difference in length becomes a value corresponding to five times the magnetic pole pitch P and the fourth coil portion 54 of the second series coil portion 22 is set as the target concentric winding portion 43, the first extension portion 31 and the first extension portion 31 While the difference in the extension length of each of the two extending portions 32 in the circumferential direction C is a value corresponding to three times the magnetic pole pitch P, the second coil portion 52 of the fourth series coil portion 24 is concentric.
  • the difference between the extending lengths of the first extending portion 31 and the second extending portion 32 in the circumferential direction C is a value corresponding to one time the magnetic pole pitch P. Therefore, in the first series coil part 21, the second coil part 52 of the fourth series coil part 24 is set to the target concentric winding part 43. As shown in FIG. 4, also about the 2nd series coil part 22, the 3rd series coil part 23, and the 4th series coil part 24 of the U-phase coil 2U, the 2nd coil part 52 of the other series coil part 20 of the same phase. Is set in the target concentric winding part 43.
  • the V-phase coil 2V is configured in the same manner as the U-phase coil 2U except for the arrangement position in the circumferential direction C. Therefore, as shown in FIG. 5, for each series coil portion 20 of the V-phase coil 2 ⁇ / b> V, the second coil portion 52 of the other series coil portion 20 in the same phase is set as the target concentric winding portion 43.
  • the symbol “43” representing the target concentric winding portion is not attached, but the concentric winding portion disposed at the same position in the circumferential direction C as the winding portion 33 is not provided. The target concentric winding part.
  • the W-phase coil 2W is different from the U-phase coil 2U and the V-phase coil 2V in the arrangement configuration of the winding part 33.
  • the fourth coil portion 54 of the other series coil portion 20 of the same phase is set as the target concentric winding portion 43.
  • the third coil part 23 and the fourth series coil part 24 of the W-phase coil 2W the third coil part 53 of the other series coil part 20 of the same phase is set as the target concentric winding part 43.
  • the winding portion 33 can be held using the jig that holds the target concentric winding portion 43 when the stator 10 is manufactured. it can. That is, since a part of the connecting wire 30 (the portion where the winding portion 33 is formed) can be held at the time of manufacturing the stator 10, the manufacturing quality of the stator 10 can be improved.
  • the stator 10 may be manufactured by winding each phase coil 2 around the core 11 by an insert method or the like in the order of the U-phase coil 2U, the V-phase coil 2V, and the W-phase coil 2W. It is done.
  • the degree of the contact Depending on the situation, the manufacturing quality (shape accuracy, insulation performance, etc.) of the stator 10 may be reduced.
  • the coil 1 according to the present embodiment since a part of the connecting wire 30 can be held at the time of manufacturing the stator 10, contact between the phase coils 2 of different phases at the time of manufacturing the stator 10 is avoided. In other words, it is easy to keep the degree of contact low, and the manufacturing quality of the stator 10 can be appropriately ensured.
  • the target concentric winding part 43 is set based on the second selection condition, and the winding number of the target concentric winding part 43 is set to be greater than that of the concentric winding part that is not the target concentric winding part 43. Since the number of times is set to be smaller, the slots 12 around which the target concentric winding portion 43 is wound are connected to the core 11 on the outer side in the axial direction than in the case where the connecting wire 30 does not include the winding portion 33. Without increasing the volume of the linear conductor, it is possible to reduce the volume of the portion of the connecting conductor 30 that is disposed on the outer side in the axial direction with respect to the core 11. Therefore, the coil end portion can be reduced in size by providing the connecting wire 30 with the winding portion 33.
  • the first selection condition is set as the selection condition. Therefore, the connecting wire 30 includes the winding portion 33 while suppressing an increase in the maximum potential difference between the phase coils 2 in a portion where the phase coils 2 of different phases are arranged in contact with or close to each other at the coil end portion.
  • a configuration can be realized. If it demonstrates supplementarily, when the object concentric winding part 43 is set to the concentric winding part (this embodiment 1st coil part 51) which comprises the edge part side concentric winding part 44, only the winding
  • the potential difference between the end on the neutral point 91 side of the end side concentric winding portion 44 and the connection terminal 90 (in-phase connection terminal 90, the same shall apply hereinafter).
  • the amount of winding of the target concentric winding portion 43 is reduced by a decrease.
  • the adjacent concentric winding part (second coil part 52 in the present embodiment) that is a concentric winding part connected to the neutral point 91 side with respect to the end side concentric winding part 44 and the connection terminal 90. The potential difference between them is also reduced.
  • the maximum potential difference may be increased.
  • the target concentric winding part 43 is set to a concentric winding part other than the end side concentric winding part 44, and thus the maximum potential difference described above.
  • the winding portion 33 can be provided on the connecting wire 30 while avoiding a decrease in the potential difference between the adjacent concentric winding portion and the connection terminal 90, which can increase the width of the connection lead wire 90.
  • the arrangement area in the circumferential direction C of each end side concentric winding part 44 does not have a portion overlapping the arrangement area in the circumferential direction C of the end side concentric winding part 44 of the other phase.
  • the coil end portion that can be achieved by setting as described above can be further reduced in size by providing the connecting portion 30 with the winding portion 33.
  • the extension length of one circumferential direction C of the first extension portion 31 and the second extension portion 32 is such that the manufacturing quality of the stator 10 can be lowered by contact with the phase coil 2 of the other phase. The length can be avoided and the manufacturing quality of the stator 10 can be further improved.
  • the extension length of the circumferential direction C of the 1st extension part 31 and the 2nd extension part 32 is between the circumferential directions C of the two concentric winding parts of the connection object by the connection conducting wire 30.
  • the extension length in the region in the circumferential direction C excluding the region in the circumferential direction C of each of the two concentric windings is that in the circumferential direction C of the two concentric windings in the connecting wire 30. This is because the portion arranged in the arrangement region is less likely to come into contact with the phase coil 2 of the other phase when the stator 10 is manufactured, as much as the two concentric winding portions exist.
  • N is set to “1”, in other words, the case where the first coil portion 51 forms the end-side concentric winding portion 44 has been described as an example.
  • the embodiment of the present invention is not limited to this, and N can be set to an integer of 2 or more.
  • N is set to a natural number smaller than the number of concentric windings included in one series coil unit 20 (“4” in the above embodiment).
  • a configuration in which N is “2”, that is, a configuration in which the end side concentric winding portion 44 is configured by both the first coil portion 51 and the second coil portion 52 may be employed.
  • the number of the slots 12 formed in the core 11 is J
  • the number of the slots 12 overlapping with the arrangement region in the circumferential direction C of one concentric winding is K
  • the series coil unit 20 included in one phase coil 2 It is also possible to set the value of the integer part of ⁇ J / (K ⁇ L ⁇ M) ⁇ where N is L and M is the number of phases of the coil 1.
  • J 96
  • the value of the integer part of ⁇ J / (K ⁇ L ⁇ M) ⁇ is “1”. is there.
  • the value of the integer part of ⁇ J / (K ⁇ L ⁇ M) ⁇ is “2”.
  • a concentric winding portion different from the concentric winding portion having the smallest difference in length can be set as the target concentric winding portion 43.
  • one connection conductor 30 includes one winding portion 33
  • one connection conductor 30 has a plurality of winding portions 33 at different positions in the circumferential direction C. It can also be set as the structure provided with.
  • a plurality of target concentric winding parts 43 are set corresponding to each of all the concentric winding parts that satisfy the above selection conditions, and the connection conductor 30 is wound around each of the plurality of target concentric winding parts 43.
  • the winding portion 33 can be provided.
  • connection conductor 30 of the plurality of connection conductors 30 included in the series coil unit 20 includes the winding part 33
  • the embodiment of the present invention is not limited to this, and the connecting wire 30 in which the concentric winding satisfying the above selection condition exists between the circumferential directions C of the two concentric windings to be connected is a series coil.
  • two or more connection conductors 30 of the plurality of connection conductors 30 provided in the series coil part 20 may be provided with a winding part 33.
  • any of the plurality of connecting wires 30 included in the series coil unit 20 may be configured not to include the winding unit 33.
  • each of the phase coils 2 includes a plurality of series coil portions 20 connected in parallel to each other has been described as an example.
  • the embodiment of the present invention is not limited to this, and each phase coil 2 may be configured to include one series coil unit 20.
  • the series coil unit 20 includes the first concentric winding unit 41 and the second concentric winding unit 42, and the first concentric winding unit 41 and the second concentric winding unit 42 alternately.
  • the case where it is configured to be connected in series so as to be described as an example.
  • the embodiment of the present invention is not limited to this, and as the series coil portion 20, a coil portion configured by connecting a plurality of first concentric winding portions 41 in series and a plurality of second concentric winding portions 42 in series.
  • the coil part connected and comprised can also be set as the structure with which the phase coil 2 is equipped.
  • the present invention is configured by being wound around a core having a plurality of slots dispersedly arranged in the circumferential direction of a cylindrical core reference surface, and a phase coil corresponding to each of a plurality of phases is star-connected. It can utilize for the coil for rotary electric machines.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Windings For Motors And Generators (AREA)

Abstract

La présente invention se rapporte à une bobine de machine électrique tournante susceptible de réduire le coût de fabrication d'une machine tournante et susceptible de réduire la taille d'une partie extrémité de bobine. Des bobines de phase (2) sont chacune équipées de parties bobine en série (21 à 24) chacune constituée par la connexion de plusieurs parties enroulement concentrique entre elles en série. Certaines des parties enroulement concentrique constituant les parties bobine en série (21 à 24), comprenant au moins une des parties enroulement concentrique continues à partir du côté d'extrémité opposé au point neutre (91), sont définies comme des parties enroulement concentrique du côté extrémité (44) et la région d'agencement de chacune des parties enroulement concentrique du côté extrémité (44) dans une direction circonférentielle (C) est définie de façon à ne pas avoir une partie chevauchée par les régions d'agencement des parties enroulement concentrique du côté extrémité (44) des autres phases dans la direction circonférentielle (C).
PCT/JP2015/054753 2014-03-20 2015-02-20 Bobine de machine électrique tournante WO2015141377A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-058575 2014-03-20
JP2014058575A JP2015186292A (ja) 2014-03-20 2014-03-20 回転電機用コイル

Publications (1)

Publication Number Publication Date
WO2015141377A1 true WO2015141377A1 (fr) 2015-09-24

Family

ID=54144356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/054753 WO2015141377A1 (fr) 2014-03-20 2015-02-20 Bobine de machine électrique tournante

Country Status (2)

Country Link
JP (1) JP2015186292A (fr)
WO (1) WO2015141377A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009247196A (ja) * 2008-03-11 2009-10-22 Hitachi Ltd 回転電機
JP2010517506A (ja) * 2007-01-30 2010-05-20 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング １８／８同期モータ
JP2013081351A (ja) * 2011-09-24 2013-05-02 Nippon Soken Inc 回転電機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010517506A (ja) * 2007-01-30 2010-05-20 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング １８／８同期モータ
JP2009247196A (ja) * 2008-03-11 2009-10-22 Hitachi Ltd 回転電機
JP2013081351A (ja) * 2011-09-24 2013-05-02 Nippon Soken Inc 回転電機

Also Published As

Publication number Publication date
JP2015186292A (ja) 2015-10-22

Similar Documents

Publication Publication Date Title
JP6477338B2 (ja) 回転電機の固定子
JP5858145B2 (ja) コイル
EP3217516B1 (fr) Machine électrique rotative
US10873226B2 (en) Rotary electric machine
JP5502913B2 (ja) 回転電機
JP2015177725A (ja) 回転電機用コイル
JP2012517209A (ja) 同期機
JP2015154582A (ja) 三相回転電機のステータ
JP6293576B2 (ja) 回転電機用のステータ
JP5915151B2 (ja) モータコイル
US20230369921A1 (en) Stator and motor
WO2017047263A1 (fr) Stator de machine tournante électrique
JP2018088729A (ja) 回転電機のステータ
JP2017221077A (ja) 回転電機の固定子
JP6324623B2 (ja) 回転電機
JP5748878B2 (ja) 回転電機
JP5949788B2 (ja) 回転電機
JP2016123249A (ja) コイル
JP2013070522A (ja) 回転電機用電機子及びその製造方法
JP2016123247A (ja) コイル
WO2015141377A1 (fr) Bobine de machine électrique tournante
JP6271088B2 (ja) 回転電機
JP6582973B2 (ja) 回転電機およびその製造方法
JP6613721B2 (ja) トロイダルコイル電動機
JP2015180146A (ja) 回転電機用コイル

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15765605

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 15765605

Country of ref document: EP

Kind code of ref document: A1