WO2017149935A1 - Winding structure for rotary electric machine stator - Google Patents

Winding structure for rotary electric machine stator Download PDF

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Publication number
WO2017149935A1
WO2017149935A1 PCT/JP2017/000493 JP2017000493W WO2017149935A1 WO 2017149935 A1 WO2017149935 A1 WO 2017149935A1 JP 2017000493 W JP2017000493 W JP 2017000493W WO 2017149935 A1 WO2017149935 A1 WO 2017149935A1
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WO
WIPO (PCT)
Prior art keywords
coil
point
continuous coil
output point
round
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PCT/JP2017/000493
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French (fr)
Japanese (ja)
Inventor
敦誉 小柴
貞一郎 千葉
Original Assignee
株式会社小松製作所
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Application filed by 株式会社小松製作所 filed Critical 株式会社小松製作所
Priority to DE112017000121.8T priority Critical patent/DE112017000121T5/en
Publication of WO2017149935A1 publication Critical patent/WO2017149935A1/en

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    • 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
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information

Definitions

  • the present invention relates to a winding structure of a rotating electric machine stator that can suppress the height of a coil end.
  • a wave winding using a square wire is formed by connecting a plurality of pine needle-shaped segment conductors.
  • a wave shape is formed by joining the tip ends of the segment conductors that are installed adjacent to each other in the circumferential direction. As the number of windings increases, the magnetomotive force can be increased and the current can be reduced within the voltage saturation range.
  • a stator winding is configured by connecting conductors formed in a wave shape at a crossing portion.
  • the crossover part is arrange
  • connection points welding points
  • crossover increases in proportion to the increase in the number of turns.
  • the feeding point of each phase can be connected from the outer peripheral side of the stator, the neutral point needs to be extended and connected from the inner peripheral side of the stator to the outer peripheral side, resulting in a high coil end.
  • the present invention has been made in view of the above, and an object of the present invention is to provide a winding structure of a rotating electrical machine stator capable of suppressing the height of a coil end.
  • a winding structure of a rotating electrical machine stator has a predetermined slot in a stator core in which a plurality of teeth and a plurality of slots are alternately formed in the circumferential direction.
  • a winding structure of a rotating electrical machine stator in which coils are wound at a pitch, and an input point and an output point are formed on the lead side, and two rows of coils are wound in a circumferential direction at a predetermined slot pitch in two rows
  • the first two-continuous continuous coil and the first two-continuous continuous coil have the same structure and are arranged with a predetermined slot pitch shifted with respect to the circumferential direction with respect to the first two-continuous continuous coil.
  • a plurality of two-layer wave winding coils composed of two two-round continuous coils are arranged in the radial direction, and the input points and the output points of the first two-round continuous coils are arranged in the same radial direction, and The input point and the output point of the second two-round continuous coil are arranged in the same radial direction, and the output point and the inner peripheral side of the first two-round continuous coil on the outer peripheral side adjacent in the radial direction are arranged.
  • the input point of the first two-round continuous coil is sequentially connected to the output point of the second two-round continuous coil on the outer peripheral side adjacent in the radial direction and the second two-round continuous coil on the inner peripheral side.
  • An input point is sequentially connected, an output point of the innermost peripheral first continuous coil is connected to an output point of the innermost peripheral second continuous coil, and the outermost first point is connected.
  • the input point of the two-round continuous coil is the current input point of the one-phase coil
  • the input point of the second outermost continuous coil is the current output point of the one-phase coil.
  • the winding structure of the rotating electrical machine stator according to the present invention is the above invention, wherein the first two-round continuous coil and the second two-round continuous coil are pine needle-shaped segments from the lead portion side to the slot.
  • the conductor is inserted, the end of the segment conductor is welded on the side opposite to the lead portion, the output point of the first two-turn continuous coil on the outer peripheral side adjacent in the radial direction, and the first two turns on the inner peripheral side Connection with the input point of the continuous coil, connection between the output point of the second continuous coil on the outer peripheral side adjacent in the radial direction and the input point of the second continuous coil on the inner peripheral side, and
  • the connection point between the output point of the first two-round continuous coil on the inner circumference and the output point of the second two-round continuous coil on the innermost circumference is connected by a pine needle-shaped segment conductor having a slot insertion portion. It is characterized by that.
  • m is an integer of 1 or more
  • N 2m + 2.
  • a pine needle-shaped segment conductor having a slot insertion portion is connected between the output point at the number of turns (N ⁇ (2m ⁇ 1)) and the input point at the number of turns (N ⁇ 2m). It is connected by a pine needle-shaped segment conductor having
  • the first two-round continuous coil and the second two-round continuous coil intersect each other at a predetermined slot pitch in the radial direction. It is characterized by being wound.
  • the three one-phase coils are arranged adjacent to each other in the circumferential direction, and the current input point of each one-phase coil is the feeding point of each phase.
  • the current output point of each one-phase coil becomes a neutral point connection point, and single star connection is performed.
  • the predetermined slot pitch is a value obtained by dividing the number of slots by the number of poles of the rotor.
  • the winding structure of the rotating electrical machine stator according to the present invention is characterized in that, in the above invention, the slot has a semi-closed slot shape.
  • the output point of the first outer peripheral side continuous coil adjacent to the radial direction and the input point of the first peripheral continuous coil on the inner peripheral side are sequentially connected to be adjacent in the radial direction.
  • the output point of the second continuous coil on the outer peripheral side and the input point of the second continuous coil on the inner peripheral side are sequentially connected to output the first continuous coil on the innermost side.
  • Point and the output point of the second innermost continuous coil at the innermost periphery, the input point of the first outermost continuous coil at the outermost periphery is used as the current input point of the coil for one phase
  • the input point of the second two-round continuous coil is used as the current output point of the one-phase coil.
  • the current input point and current output point of the coil for one phase are arranged on the outermost peripheral side of the slot, the height of the coil end on the lead portion side can be suppressed and the coil peripheral length is short.
  • the resistance value of the coil can be suppressed.
  • FIG. 1 is a diagram illustrating a state in which wave windings are wound around a stator core when a rotating electrical machine stator used in a rotating electrical machine such as a permanent magnet type rotating electrical machine is configured.
  • FIG. 2 is a perspective view showing a winding state of the first two-round continuous coil.
  • FIG. 3 is a view of the first two-round continuous coil developed linearly as seen from the lead portion side.
  • FIG. 4 is a perspective view showing a winding state when the first two-round continuous coil is arranged in the outer circumferential direction.
  • FIG. 5 shows a linear development of a two-layer wave winding coil in which a second two-turn continuous coil having the same configuration as that of the first two-turn continuous coil is shifted in the rotational direction by 6 slot pitches.
  • FIG. 6 is a perspective view showing a winding state of a two-layer wave winding coil in which a second two-turn continuous coil having the same configuration as that of the first two-turn continuous coil is shifted by six slot pitches in the rotational direction side. It is.
  • FIG. 7 is a cross-sectional view showing a winding state of the wave winding coil for one phase.
  • FIG. 8 is a diagram showing the connection between the first two-round continuous coils, between the second two-round continuous coils, and between the first two-round continuous coils and the second two-round continuous coils.
  • FIG. 9 is a diagram showing a winding state when the connection shown in FIG. 8 is a pine needle-shaped segment conductor.
  • FIG. 10 is a perspective view of the rotating electrical machine stator in the connected state shown in FIG. 9 as viewed from the lead portion side.
  • FIG. 11 is a perspective view of the rotating electrical machine stator as viewed from the side opposite the lead portion.
  • FIG. 12 is an explanatory diagram for explaining a connected state in the case of an eight-turn configuration using four two-layer wave winding coils.
  • FIG. 13 is an explanatory diagram for explaining a connected state in the case of a four-turn configuration using two two-layer wave winding coils.
  • FIG. 14 is an explanatory diagram for explaining a connected state in the case of a six-turn configuration using three two-layer wave winding coils.
  • FIG. 12 is an explanatory diagram for explaining a connected state in the case of an eight-turn configuration using four two-layer wave winding coils.
  • FIG. 13 is an explanatory diagram for explaining a connected state in the case of a four-turn configuration using two two-layer wave winding coils.
  • FIG. 14
  • FIG. 15 is an explanatory diagram for explaining a connected state in a 10-turn configuration using five two-layer wave winding coils.
  • FIG. 16 is an explanatory diagram for explaining a connection state in a 12-turn configuration using six two-layer wave winding coils.
  • FIG. 17 is an explanatory diagram for explaining a connected state in the case of a 14-turn configuration using seven two-layer wave winding coils.
  • FIG. 18 shows the connection relationship of the pine needle-shaped segment conductors for connecting the two continuous coils in the first two continuous coils and the second two continuous coils, and the first two continuous coils and the second two. It is the figure which generalized the connection relation between the circumference continuous coils.
  • FIG. 19 is a cross-sectional view of the stator core when the slot has a semi-closed slot shape.
  • FIG. 1 is a diagram showing a state in which a wave winding is wound around a stator core when a rotating electrical machine stator used in a rotating electrical machine such as a permanent magnet type rotating electrical machine is configured.
  • a rotating electrical machine stator used in a rotating electrical machine such as a permanent magnet type rotating electrical machine is configured.
  • a plurality of teeth 2 and a plurality of slots 3 are regularly formed in an annular shape on the inner peripheral side, which is the region E side where the rotor is inserted, in the circumferential direction RT. .
  • 48 slots 3 are formed. Note that the number of poles of the rotor (not shown) is eight.
  • the rotating electric machine has a function of an electric motor and / or a generator.
  • the stator core 1 is configured by laminating a plurality of annular electromagnetic steel plates.
  • the winding wound around the stator core 1 is formed into a wave shape using a plurality of segment conductors 10. Both end portions of the pine needle-shaped segment conductor 10 are inserted into the slots 3 at a predetermined slot pitch in the direction of the central axis AX from the lead portion side (feeding portion side) 1a.
  • the portion of the inserted segment conductor 10 that protrudes from the opposite lead side 1b, that is, the portion that protrudes from the slot insertion portion, is bent so as to spread in the circumferential direction RT, and the tip 10a of the segment conductor 10 is adjacent to another adjacent segment conductor. 10 is welded to the tip 10a.
  • a first two-turn continuous coil CA1 which is a wave winding composed of a plurality of segment conductors 10 is formed.
  • winding is a square wire, especially a flat wire.
  • FIG. 2 is a perspective view showing a winding state of the first two-round continuous coil.
  • FIG. 3A is a view of the first two-round continuous coil CA1 developed linearly as viewed from the lead portion side 1a.
  • the tip ends 10a of the segment conductors 21 to 28 are connected in series by welding on the non-lead portion side 1b.
  • Both end portions of the segment conductors 22 to 24 and 26 to 28 are inserted into the slot 3 at a pitch of 6 slots.
  • the segment conductors 22, 26, 23, 27, 24, and 28 are inserted with a shift of one slot pitch.
  • the segment conductors 22 to 24 are arranged with a 6-slot pitch therebetween.
  • segment conductors 26 to 28 are arranged at a 6-slot pitch from each other.
  • the segment conductor 21 is arranged in the connection area EA, and the one inserted into the slot 3 at a 7-slot pitch is separated at the lead portion side 1a, and the segment conductor 21a having the input point a2 which is the separated end, It consists of the segment conductor 21b which has the output point a1 which is an edge part.
  • the segment conductor 25 in the connection area EA has a role of connecting the first coil to the second coil, and both ends thereof are inserted into the slots 3 at a pitch of 5 slots.
  • the segment conductors 25 disposed between the segment conductors 24 and 26 are disposed at a 6-slot pitch with respect to each of the segment conductors 24 and 26.
  • the welded portions T21 to T28 connect the tip ends of adjacent segment conductors on the side opposite to the lead portion 1b by welding.
  • the weld T21 connects the segment conductors 21a and 22 with each other.
  • the weld T22 connects the segment conductors 22 and 23.
  • the welded portion T23 connects the segment conductors 23 and 24 together.
  • the weld T24 connects the segment conductors 24 and 25.
  • the welded portion T25 connects the segment conductors 25 and 26.
  • the weld T26 connects the segment conductors 26 and 27.
  • the weld T27 connects the segment conductors 27 and 28.
  • the weld T28 connects the segment conductors 28 and 21b.
  • the current input from the input point a2 is sequentially, in the clockwise direction CW, segment conductor 21a, weld T21, segment conductor 22, weld T22, segment conductor 23, weld T23, segment conductor 24, weld T24, segment
  • the conductor 25 flows through the first round, and the segment conductor 25, the welded portion T25, the segment conductor 26, the welded portion T26, the segment conductor 27, the welded portion T27, the segment conductor 28, the welded portion T28, It flows through the segment conductor 21b and the second round of wave winding ends and reaches the output point a1.
  • the conductors arranged in the adjacent slots have the same current direction, for example, the conductors arranged at the slot position 6 and the slot position 7.
  • the first two-turn continuous coil CA1 is wound in a zigzag manner in the slot 3 every six slot pitches, and is adjacent to the radially adjacent layer L1 on the inner peripheral side and the layer L2 on the outer peripheral side. It is wound alternately.
  • the layer represents the winding position in the slot 3 and is shown as layers L1, L2,..., L8 sequentially from the inner periphery side to the outer periphery side.
  • each segment conductor is arranged in an arc shape along the circumferential direction in the stator core 1, the first winding and the second winding intersect at the lead portion side 1a and the non-lead portion side 1b. To do.
  • the segment conductor 27 extending from the layer L1 to the lead portion side 1a extends in the circumferential direction, shifts to the position of the layer L2 at a pinna shaped apex portion 27t (see FIG. 2), and further extends in the circumferential direction. Enter layer L2 of the eye slot.
  • the segment conductors 23 arranged with a one-slot pitch deviation extend from the layer L1 to the lead portion side 1a and extend in the circumferential direction, and shift to the position of the layer L2 at the pinna shaped vertex 23t and further extend in the circumferential direction. , Enters layer L2 of the slot of the sixth slot pitch.
  • the segment conductor 23 is disposed under the segment conductor 27 from the layer L1 to the lead portion side 1a until reaching the vertex portion 23t, and enters the layer L2 of the slot of the sixth slot pitch from the vertex portion 23t.
  • the apex portions 27t and 23t have an upwardly convex chevron shape, and a one-slot pitch shift occurs according to the one-slot pitch shift of the segment conductors 27 and 23.
  • the vertex portions 27t and 23t are shift points at which the segment conductors 27 and 23 shift from the layer L1 to the layer L2, but are shifted by one slot pitch. For this reason, the intersection where the upper and lower sides of the segment conductors 27 and 23 are interchanged is performed at the positions of the vertex portions 27t and 23t. By performing this intersection, the height at each coil end can be suppressed without twisting the flat wire.
  • FIG. 4 is a perspective view showing a winding state when the first two-round continuous coils CA2 to CA4 having the same configuration as the first two-round continuous coil CA1 are sequentially arranged in the outer circumferential direction.
  • the first two-turn continuous coil CA2 is alternately wound between the layers L3 and L4.
  • the first two-turn continuous coil CA3 is alternately wound between the layers L5 and L6.
  • the first two-turn continuous coil CA4 is alternately wound between the layers L7 and L8.
  • the input points a2, a4, a6, a8 and the output points a1, a3, a5, a7 of the first two-turn continuous coil CA are gathered in the connection region EA and along the radial direction RCA. Each is arranged linearly.
  • the output point a7 and the input point a6, the output point a5 and the input point a4, and the output point a3 and the input point a2 are connected to reach the output point a1.
  • One wave winding coil is formed. That is, the first two continuous coils CA1 to CA4 are connected in series by the connection in the connection area EA. Further, due to this connection, the conductors arranged in the same slot, for example, the conductors of the layers L1, L3, L5, and L7 at the slot position 7, have the same current direction.
  • the second two-turn continuous coil CB1 having the same configuration as the first two-turn continuous coil CA1 is arranged shifted by 6 slot pitches in the clockwise direction CW side.
  • the conductors arranged in the same slot around which the coil is wound for example, the conductors of the layer L1 and the layer L2 at the slot position 7, need to have the same current direction, the first 2
  • the input point a2 of the continuous loop coil CA1 is a current input point
  • the input point b2 of the second continuous coil CB1 is a current output point
  • the output point b1 is a current input point.
  • the current directions of the coils in the same slot are the same.
  • the input point b2 and the output point b1 of the second two-turn continuous coil CB1 are arranged in a connection region EB shifted by 6 slot pitches from the connection region EA.
  • the second two-round continuous coils CB2 ⁇ CB4 is sequentially arranged in the outer circumferential direction (radial direction RCB). That is, four two-layer wave winding coils are arranged in the outer peripheral direction.
  • the input points b2, b4, b6, b8 and the output points b1, b3, b5, b7 of the second continuous coil CB (CB1 to CB4) are gathered in the connection region EB and along the radial direction RCB. Each is arranged linearly.
  • first two-round continuous coils CA1 to CA4 and second two-round continuous coils CB1 to CB4 eight layers (L1 to L8) are provided in two adjacent slots.
  • the coils are densely arranged by shifting in the circumferential direction RT by 6 slot pitches.
  • the output point a7 and the input point a6, the output point a5 and the input point a4, the output point a3 and the input point a2 are set.
  • the output point b7 and the input point b6, the output point b5 and the input point b4, the output point b3 and the input point b2 are connected, respectively, and the innermost circumference
  • the output point a1 of the first two-turn continuous coil CA1 and the output point b1 of the innermost second turn-around continuous coil CB1 are connected.
  • the conductors arranged in the same slot around which the coil is wound for example, the conductors of the layer L1 and the layer L2 at the slot position 7, have the same current direction.
  • the current input from the input point a8 of the outermost first two-round continuous coil CA4 reaches the output point a1 of the first two-round continuous coil CA1, and the output point a1 and the output point b1 are connected.
  • the second innermost second continuous coil CB1 is folded and output from the input point b8 of the second outermost continuous coil CB4. That is, the first two-turn continuous coils CA1 to CA4 (CA) and the second two-turn continuous coils CB1 to CB4 (CB) form one continuous wave winding coil for one phase.
  • the current input point and the current output point for the wave winding coil for one phase are arranged on the outermost peripheral side.
  • the current input point Uin and the current output point UN are arranged on the outermost periphery of each slot 3.
  • the V-phase one-phase wave winding coil and the W-phase one-phase wave winding coil each have two slots in the circumferential direction.
  • a three-phase coil with a single star connection can be generated by arranging adjacently with a pitch shift. That is, as shown in FIG. 8 (b), the wave winding coil 30 U for one phase of U phase, the wave winding coil 30 V for one phase of V phase, and the wave winding coil 30 W for one phase of W phase are at a neutral point N.
  • Single star connected coils can be generated.
  • current input points Uin, Vin, and Win are U-phase, V-phase, and W-phase feed points, respectively
  • current output points UN, VN, and WN are U-phase, V-phase, and W-phase, respectively.
  • Phase neutral point connection point Since the current input points Uin, Vin, Win and the current output points UN, VN, WN are arranged on the outermost periphery of each slot 3, a three-phase coil is generated simply by connecting the current output points UN, VN, WN. be able to.
  • the output point b3 and the input point b2 the innermost output point a1 and the innermost output point b1, the pine needle shaped segment conductors 41, 42, 43, 51, 52, 53, 60U Are connected.
  • the segment conductor 10 is shifted to the outer peripheral layer by one layer at the apex portion while extending six pitches in the clockwise direction CW
  • the segment conductors 41, 42, 43, 51, 52, 53 Shifts by one layer at the apex while extending seven slots in the clockwise direction CW.
  • the segment conductors 41, 42, 43, 51, 52, and 53 are bent so as to spread in the circumferential direction RT and their tips are welded. Therefore, welding on the lead portion side 1a is not necessary when connecting the first two-turn continuous coils CA1 to CA4 and the second two-turn continuous coils CB1 to CB4. As a result, the height of the coil end on the lead portion side 1a can be suppressed.
  • the current output points UN, VN, and WN that form the neutral point N may be connected by a trifurcated segment conductor.
  • FIG. 10 is a perspective view of the rotating electrical machine stator as viewed from the lead portion side 1a.
  • the folds at the innermost circumference of the first two-round continuous coil CA and the second two-round continuous coil CB in the U phase are pine needle-shaped segments.
  • the conductors 60U are connected.
  • the V-phase and W-phase are connected by pine needle shaped segment conductors 60V and 60W.
  • segment conductors 60U, 60V, 60W connect the conductors at the slot positions separated by 6 slot pitches. Since the segment conductors 60U, 60V, 60W connect the layers L1 to each other, there is no radial shift, and the conductors on both sides protruding from the layer L1 at the coil end 5a are bent in the clockwise direction CW. Thereby, it does not interfere with an adjacent segment conductor.
  • the protruding conductor in the clockwise direction CW is folded back in the counterclockwise direction where the adjacent segment conductor shifts to the outer peripheral side at the apex of the pine needle shape.
  • the coil end 5a on the lead portion side 1a does not require welding, and the current input points Uin, Vin, Win and the current output points UN, VN, WN are on the outermost periphery. Because of the arrangement, the connection of the neutral point N (current output point UN) and the wiring to the power source (current input point Uin) can be performed outside the coil end 5a in the radial direction, and the height of the coil end 5a can be suppressed. Can do.
  • first two-round continuous coil CA and the second two-round continuous coil CB are connected by the shortest segment conductor 60U on the inner circumference side, between the first two-round continuous coils CA1 to CA4, and the second Since the two continuous coils CB1 to CB4 are also connected by the shortest segment conductors 41 to 43 and 51 to 53, the coil circumferential length is shortened, and the resistance value of the coil can be suppressed.
  • a wave winding coil 30U for one U-phase is connected in series with a first two-turn continuous coil CA (CA1 to CA4) and a second two-turn continuous coil CB (CB1 to CB4).
  • the current input point Uin is connected to the input point a8 of the first two-turn continuous coil CA4 arranged in the layer L8.
  • the output point a7 of the first two-turn continuous coil CA4 arranged in the layer L7 and the input point a6 of the first two-turn continuous coil CA3 arranged in the layer L6 are connected by a pine needle-shaped segment conductor 41.
  • the output point a5 of the first two-turn continuous coil CA3 arranged in the layer L5 and the input point a4 of the first two-turn continuous coil CA2 arranged in the layer L4 are connected by a pine needle-shaped segment conductor 42.
  • the output point a3 of the first two-turn continuous coil CA2 arranged in the layer L3 and the input point a2 of the first two-turn continuous coil CA1 arranged in the layer L2 are connected by a pine needle-shaped segment conductor 43.
  • the output point a1 of the first two-turn continuous coil CA1 arranged in the layer L1 and the output point b1 of the second two-turn continuous coil CB1 arranged in the layer L1 are connected by a pine needle-shaped segment conductor 60U.
  • the input point b2 of the second two-round continuous coil CB1 arranged in the layer L2 and the output point b3 of the second two-round continuous coil CB2 arranged in the layer L3 are connected by a pine needle-shaped segment conductor 53.
  • the input point b4 of the second two-round continuous coil CB2 arranged in the layer L5 and the output point b5 of the second two-round continuous coil CB3 arranged in the layer L4 are connected by a pine needle-shaped segment conductor 52.
  • the input point b6 of the second two-round continuous coil CB3 arranged in the layer L6 and the output point b7 of the second two-round continuous coil CB4 arranged in the layer L7 are connected by a pine needle-shaped segment conductor 51.
  • the input point b8 of the second two-turn continuous coil CB4 arranged in the layer L8 is connected to the current output point UN.
  • the U-phase one-phase wave winding coil 30U described above uses the first two-round continuous coils CA1 to CA4 and the second two-round continuous coils CB1 to CB4, which are eight (8-turn) two-round continuous coils.
  • FIG. 18 is a diagram that generalizes the connection relationship of the pine needle-shaped segment conductors for connecting the respective two-round continuous coils in the first two-round continuous coil CA and the second two-round continuous coil CB. is there.
  • two continuous coils wound in a wave winding across two adjacent layers are each N / 2 in the radial direction with respect to the number of turns N (N also means the number of layers and the number of turns).
  • the first two-turn continuous coil CA includes N / 2 first two-turn continuous coils CA1 to CA (N / 2) with respect to the number N of turns.
  • the second two-round continuous coil CB includes N / 2 second two-round continuous coils CB1 to CB (N / 2) with respect to the number N of turns. Further, the first two-turn continuous coil CA and the second two-turn continuous coil CB are arranged with a 6-slot pitch shift.
  • Input points a2, a4,..., A (N-6), a (N-4), a (N-2), and a (N) corresponding to the input point a2 and the like of the first continuous coil CA are , Layers (N-2m), (N-2 (m-1)), ..., (N-6), (N-4), (N-2), (N), and the central axis It arrange
  • input points b2, b4,..., B (N-6), b (N-4), b (N-2), b (corresponding to the input point b2 etc. of the second two-turn continuous coil CB N) are arranged in layers (N-2m), (N-2 (m-1)), ..., (N-6), (N-4), (N-2), (N), and Are arranged on a straight line extending radially from the central axis AX.
  • m is an integer equal to or greater than 1
  • the first continuous coil CA has a layer (N ⁇ ) at the position of the number of turns (N ⁇ (2m ⁇ 1)).
  • the pine needle is between the output point a (N- (2m-1)) of (2m-1)) and the input point a (N-2m) of the layer (N-2m) at the position of the number of turns (N-2m) Connected with segmented conductors.
  • the second continuous coil CB has the output point b (N ⁇ (2m ⁇ 1)) of the layer (N ⁇ (2m ⁇ 1)) at the position of the number of turns (N ⁇ (2m ⁇ 1)).
  • the input point b (N-2m) of the layer (N-2m) which is the position of the number of turns (N-2m) is connected by a pine needle-shaped segment conductor. Then, the output point a (N ⁇ (2m + 1)) of the first two-turn continuous coil CA and the second two-turn continuous coil in the layer (N ⁇ (2m + 1)) at the position of the number of turns (N ⁇ (2m + 1)).
  • the output point b (N ⁇ (2m + 1)) of CB is connected by a pine needle shaped segment conductor.
  • the output point a1 of the first two-turn continuous coil CA and the output point b1 of the second two-turn continuous coil CB are connected on the innermost periphery, and the current input point Uin and the current are connected to the outermost periphery.
  • An output point UN is arranged.
  • the slot 3 has a semi-closed slot shape having a flange extending in the circumferential direction from the tip of the tooth 2.
  • a flange extending in the circumferential direction from the tip of the tooth 2.
  • annular slots 3 are formed, the number of poles of the rotor is 8, and the first two-round continuous coil CA and the second two-round continuous coil CB are arranged at a six-slot pitch.
  • the number of slots is Ns and the number of poles of the rotor is Np
  • the first two-round continuous coil CA and the second two-round continuous coil CB are (Ns / Np) What is necessary is just to shift the slot pitch of minutes.

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  • Windings For Motors And Generators (AREA)

Abstract

In order to provide a winding structure that is for a rotary electric machine stator and that limits the height of coil ends, the present invention is configured such that: first two-loop continuous coils CA1-CA4 and second two-loop continuous coils CB1-CB4 are staggered at six slot pitches with respect to the rotational direction; output points a7, a5, a3 that are for outer-circumferential-side first two-loop continuous coils CA and that are adjacent in radial direction RCA and input points a6, a4, a2 that are for inner-circumferential-side first two-loop continuous coils CA and that are adjacent in said direction are respectively and sequentially connected; output points b7, b5, b3 that are for outer-circumferential-side second two-loop continuous coils CB and that are adjacent in radial direction RCB and input points b6, b4, b2 that are for inner-circumferential-side second two-loop continuous coils CB and that are adjacent in said direction are respectively and sequentially connected; an output point a1 for the innermost first two-loop continuous coil CA1 and an output point b1 for the innermost second two-loop continuous coil CB1 are connected; an input point a8 for the outermost first two-loop continuous coil CA4 is a current input point for a one-phase coil; and an input point b8 for the outermost second two-loop continuous coil CB4 is a current output point for the one-phase coil.

Description

回転電機ステータの巻線構造Winding structure of rotating electric machine stator
　本発明は、コイルエンドの高さを抑えることができる回転電機ステータの巻線構造に関する。 The present invention relates to a winding structure of a rotating electric machine stator that can suppress the height of a coil end.
　近年、自動車業界では主要な角線の巻線方式として波巻が採用されている。角線を用いた波巻においては、複数の松葉形状のセグメント導体を連結して形成される。周方向に隣接して設置されるセグメント導体の先端のうち近い側同士の先端を接合することにより、波形状が形成される。波巻は、巻数が多いほど、起磁力を大きくすることができ、電圧飽和の範囲内で電流を低減できる利点がある。 In recent years, wave winding has been adopted in the automobile industry as a main winding method for square wires. A wave winding using a square wire is formed by connecting a plurality of pine needle-shaped segment conductors. A wave shape is formed by joining the tip ends of the segment conductors that are installed adjacent to each other in the circumferential direction. As the number of windings increases, the magnetomotive force can be increased and the current can be reduced within the voltage saturation range.
　なお、特許文献１には、波形状に成形された導体を渡り部で連結することにより、固定子巻線を構成している。なお、渡り部は導体の頂部であるクランク部の上方に配置される。 In Patent Document 1, a stator winding is configured by connecting conductors formed in a wave shape at a crossing portion. In addition, the crossover part is arrange | positioned above the crank part which is the top part of a conductor.
特開２０１１－１０９８９４号公報JP 2011-109894 A
　しかしながら、波巻は、巻数が多いほど、結線点数（溶接点）が増加し、巻数の増加に比例して渡り線が増加する。本来、角線を用いてコイルエンドの高さを低くする狙いがあるが、この渡り線の増加によってコイルエンド高さを増加させてしまう。さらに、各相の給電点はステータの外周側から接続できるものの、中性点はステータの内周側から外周側に引き延ばして接続する必要があり、コイルエンドが高くなってしまう。 However, as the number of turns of the wave winding increases, the number of connection points (welding points) increases, and the crossover increases in proportion to the increase in the number of turns. Originally, there is an aim to reduce the height of the coil end by using a square wire, but the increase in the connecting wire increases the coil end height. Furthermore, although the feeding point of each phase can be connected from the outer peripheral side of the stator, the neutral point needs to be extended and connected from the inner peripheral side of the stator to the outer peripheral side, resulting in a high coil end.
　本発明は、上記に鑑みてなされたものであって、コイルエンドの高さを抑えることができる回転電機ステータの巻線構造を提供することを目的とする。 The present invention has been made in view of the above, and an object of the present invention is to provide a winding structure of a rotating electrical machine stator capable of suppressing the height of a coil end.
　上述した課題を解決し、目的を達成するために、本発明にかかる回転電機ステータの巻線構造は、周方向に複数のティースと複数のスロットとが交互に環状に形成されたステータコアに所定スロットピッチでコイルが波巻された回転電機ステータの巻線構造であって、リード部側に入力点および出力点を形成し、周方向に２列で２周分のコイルを所定スロットピッチで波巻した第１の２周連続コイルと前記第１の２周連続コイルと同一構造であって前記第１の２周連続コイルに対して前記周方向に対して前記所定スロットピッチずらして配置される第２の２周連続コイルとからなる２レイヤ波巻コイルを半径方向に複数配列するとともに、前記第１の２周連続コイルの前記入力点および前記出力点のそれぞれを同一半径方向に配置し、かつ、前記第２の２周連続コイルの前記入力点および前記出力点のそれぞれを同一半径方向に配置し、半径方向に隣接する外周側の前記第１の２周連続コイルの出力点と内周側の前記第１の２周連続コイルの入力点とを順次連結し、半径方向に隣接する外周側の前記第２の２周連続コイルの出力点と内周側の前記第２の２周連続コイルの入力点とを順次連結し、最内周の前記第１の２周連続コイルの出力点と最内周の前記第２の２周連続コイルの出力点とを連結し、最外周の前記第１の２周連続コイルの入力点を１相分コイルの電流入力点とし、最外周の前記第２の２周連続コイルの入力点を前記１相分コイルの電流出力点とすることを特徴とする。 In order to solve the above-described problems and achieve the object, a winding structure of a rotating electrical machine stator according to the present invention has a predetermined slot in a stator core in which a plurality of teeth and a plurality of slots are alternately formed in the circumferential direction. A winding structure of a rotating electrical machine stator in which coils are wound at a pitch, and an input point and an output point are formed on the lead side, and two rows of coils are wound in a circumferential direction at a predetermined slot pitch in two rows The first two-continuous continuous coil and the first two-continuous continuous coil have the same structure and are arranged with a predetermined slot pitch shifted with respect to the circumferential direction with respect to the first two-continuous continuous coil. A plurality of two-layer wave winding coils composed of two two-round continuous coils are arranged in the radial direction, and the input points and the output points of the first two-round continuous coils are arranged in the same radial direction, and The input point and the output point of the second two-round continuous coil are arranged in the same radial direction, and the output point and the inner peripheral side of the first two-round continuous coil on the outer peripheral side adjacent in the radial direction are arranged. The input point of the first two-round continuous coil is sequentially connected to the output point of the second two-round continuous coil on the outer peripheral side adjacent in the radial direction and the second two-round continuous coil on the inner peripheral side. An input point is sequentially connected, an output point of the innermost peripheral first continuous coil is connected to an output point of the innermost peripheral second continuous coil, and the outermost first point is connected. The input point of the two-round continuous coil is the current input point of the one-phase coil, and the input point of the second outermost continuous coil is the current output point of the one-phase coil. .
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、前記第１の２周連続コイルおよび前記第２の２周連続コイルは、リード部側から前記スロットに松葉形状のセグメント導体を挿入し、反リード部側で前記セグメント導体の端部を溶接し、半径方向に隣接する外周側の前記第１の２周連続コイルの出力点と内周側の前記第１の２周連続コイルの入力点との連結、半径方向に隣接する外周側の前記第２の２周連続コイルの出力点と内周側の前記第２の２周連続コイルの入力点との連結、および最内周の前記第１の２周連続コイルの出力点と最内周の前記第２の２周連続コイルの出力点との連結は、スロット挿入部を有した松葉形状のセグメント導体によって接続されることを特徴とする。 Further, the winding structure of the rotating electrical machine stator according to the present invention is the above invention, wherein the first two-round continuous coil and the second two-round continuous coil are pine needle-shaped segments from the lead portion side to the slot. The conductor is inserted, the end of the segment conductor is welded on the side opposite to the lead portion, the output point of the first two-turn continuous coil on the outer peripheral side adjacent in the radial direction, and the first two turns on the inner peripheral side Connection with the input point of the continuous coil, connection between the output point of the second continuous coil on the outer peripheral side adjacent in the radial direction and the input point of the second continuous coil on the inner peripheral side, and The connection point between the output point of the first two-round continuous coil on the inner circumference and the output point of the second two-round continuous coil on the innermost circumference is connected by a pine needle-shaped segment conductor having a slot insertion portion. It is characterized by that.
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、ｍを１以上の整数とし、半径方向への巻数ＮをＮ＝２ｍ＋２として、複数の前記第１の２周連続コイル間は、巻数（Ｎ－（２ｍ－１））の位置の出力点と巻数（Ｎ－２ｍ）の位置の入力点との間を、スロット挿入部を有した松葉形状のセグメント導体で接続されるとともに、複数の前記第２の２周連続コイル間は、巻数（Ｎ－（２ｍ－１））の位置の出力点と巻数（Ｎ－２ｍ）の位置の入力点との間を、スロット挿入部を有した松葉形状のセグメント導体で接続されることを特徴とする。 Further, the winding structure of the rotating electrical machine stator according to the present invention is the above-described invention, wherein m is an integer of 1 or more, and the number of turns N in the radial direction is N = 2m + 2. Between the output point at the position of the number of turns (N− (2m−1)) and the input point at the position of the number of turns (N−2m), a pine needle-shaped segment conductor having a slot insertion portion is connected. In addition, a slot insertion portion is provided between the plurality of the second two-round continuous coils between the output point at the number of turns (N− (2m−1)) and the input point at the number of turns (N−2m). It is connected by a pine needle-shaped segment conductor having
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、前記第１の２周連続コイルと前記第２の２周連続コイルとは、それぞれ所定スロットピッチ毎に半径方向で交差して巻回されることを特徴とする。 In the winding structure of the rotating electrical machine stator according to the present invention, in the above invention, the first two-round continuous coil and the second two-round continuous coil intersect each other at a predetermined slot pitch in the radial direction. It is characterized by being wound.
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、３つの前記１相分コイルが周方向に隣接配置され、各１相分コイルの電流入力点が各相の給電点となり、各１相分コイルの電流出力点が中性点接続点となってシングルスター結線されることを特徴とする。 Also, in the winding structure of the rotating electrical machine stator according to the present invention, in the above invention, the three one-phase coils are arranged adjacent to each other in the circumferential direction, and the current input point of each one-phase coil is the feeding point of each phase. Thus, the current output point of each one-phase coil becomes a neutral point connection point, and single star connection is performed.
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、前記所定スロットピッチは、スロット数をロータの極数で除算した値であることを特徴とする。 In the winding structure of the rotating electrical machine stator according to the present invention, the predetermined slot pitch is a value obtained by dividing the number of slots by the number of poles of the rotor.
　また、本発明にかかる回転電機ステータの巻線構造は、上記の発明において、前記スロットは、セミクローズドスロット形状であることを特徴とする。 Further, the winding structure of the rotating electrical machine stator according to the present invention is characterized in that, in the above invention, the slot has a semi-closed slot shape.
　本発明によれば、半径方向に隣接する外周側の第１の２周連続コイルの出力点と内周側の第１の２周連続コイルの入力点とを順次連結し、半径方向に隣接する外周側の前記第２の２周連続コイルの出力点と内周側の前記第２の２周連続コイルの入力点とを順次連結し、最内周の前記第１の２周連続コイルの出力点と最内周の前記第２の２周連続コイルの出力点とを連結し、最外周の前記第１の２周連続コイルの入力点を１相分コイルの電流入力点とし、最外周の前記第２の２周連続コイルの入力点を前記１相分コイルの電流出力点としている。これにより、１相分コイルの電流入力点および電流出力点がスロットの最外周側に配置されるので、リード部側のコイルエンドの高さを抑えることができるとともに、コイル周長が短いため、コイルの抵抗値を抑えることができる。 According to the present invention, the output point of the first outer peripheral side continuous coil adjacent to the radial direction and the input point of the first peripheral continuous coil on the inner peripheral side are sequentially connected to be adjacent in the radial direction. The output point of the second continuous coil on the outer peripheral side and the input point of the second continuous coil on the inner peripheral side are sequentially connected to output the first continuous coil on the innermost side. Point and the output point of the second innermost continuous coil at the innermost periphery, the input point of the first outermost continuous coil at the outermost periphery is used as the current input point of the coil for one phase, The input point of the second two-round continuous coil is used as the current output point of the one-phase coil. Thereby, since the current input point and current output point of the coil for one phase are arranged on the outermost peripheral side of the slot, the height of the coil end on the lead portion side can be suppressed and the coil peripheral length is short. The resistance value of the coil can be suppressed.
図１は、永久磁石型回転電機などの回転電機に用いられる回転電機ステータを構成する際、ステータコアに波巻巻線を巻き回す状態を示す図である。FIG. 1 is a diagram illustrating a state in which wave windings are wound around a stator core when a rotating electrical machine stator used in a rotating electrical machine such as a permanent magnet type rotating electrical machine is configured. 図２は、第１の２周連続コイルの巻回状態を示す斜視図である。FIG. 2 is a perspective view showing a winding state of the first two-round continuous coil. 図３は、第１の２周連続コイルを直線的に展開したものをリード部側からみた図である。FIG. 3 is a view of the first two-round continuous coil developed linearly as seen from the lead portion side. 図４は、第１の２周連続コイルを外周方向に配置した場合の巻回状態を示す斜視図である。FIG. 4 is a perspective view showing a winding state when the first two-round continuous coil is arranged in the outer circumferential direction. 図５は、第１の２周連続コイルと同じ構成の第２の２周連続コイルを回転方向側に６スロットピッチ分、シフトして配置した２レイヤ波巻コイルを直線的に展開したものをリード部側からみた図である。FIG. 5 shows a linear development of a two-layer wave winding coil in which a second two-turn continuous coil having the same configuration as that of the first two-turn continuous coil is shifted in the rotational direction by 6 slot pitches. It is the figure seen from the lead part side. 図６は、第１の２周連続コイルと同じ構成の第２の２周連続コイルを回転方向側に６スロットピッチ分、シフトして配置した２レイヤ波巻コイルの巻回状態を示す斜視図である。FIG. 6 is a perspective view showing a winding state of a two-layer wave winding coil in which a second two-turn continuous coil having the same configuration as that of the first two-turn continuous coil is shifted by six slot pitches in the rotational direction side. It is. 図７は、１相分の波巻コイルの巻回状態を示す断面図である。FIG. 7 is a cross-sectional view showing a winding state of the wave winding coil for one phase. 図８は、第１の２周連続コイル間、第２の２周連続コイル間、および、第１の２周連続コイルと第２の２周連続コイルとの間の連結を示す図である。FIG. 8 is a diagram showing the connection between the first two-round continuous coils, between the second two-round continuous coils, and between the first two-round continuous coils and the second two-round continuous coils. 図９は、図８に示した連結を松葉形状のセグメント導体とした場合の巻回状態を示す図である。FIG. 9 is a diagram showing a winding state when the connection shown in FIG. 8 is a pine needle-shaped segment conductor. 図１０は、図９に示した連結状態とした回転電機ステータをリード部側からみた斜視図である。10 is a perspective view of the rotating electrical machine stator in the connected state shown in FIG. 9 as viewed from the lead portion side. 図１１は、回転電機ステータを反リード部側からみた斜視図である。FIG. 11 is a perspective view of the rotating electrical machine stator as viewed from the side opposite the lead portion. 図１２は、２レイヤ波巻コイルを４つ用いた８ターン構成とした場合の連結状態を説明する説明図である。FIG. 12 is an explanatory diagram for explaining a connected state in the case of an eight-turn configuration using four two-layer wave winding coils. 図１３は、２レイヤ波巻コイルを２つ用いた４ターン構成とした場合の連結状態を説明する説明図である。FIG. 13 is an explanatory diagram for explaining a connected state in the case of a four-turn configuration using two two-layer wave winding coils. 図１４は、２レイヤ波巻コイルを３つ用いた６ターン構成とした場合の連結状態を説明する説明図である。FIG. 14 is an explanatory diagram for explaining a connected state in the case of a six-turn configuration using three two-layer wave winding coils. 図１５は、２レイヤ波巻コイルを５つ用いた１０ターン構成とした場合の連結状態を説明する説明図である。FIG. 15 is an explanatory diagram for explaining a connected state in a 10-turn configuration using five two-layer wave winding coils. 図１６は、２レイヤ波巻コイルを６つ用いた１２ターン構成とした場合の連結状態を説明する説明図である。FIG. 16 is an explanatory diagram for explaining a connection state in a 12-turn configuration using six two-layer wave winding coils. 図１７は、２レイヤ波巻コイルを７つ用いた１４ターン構成とした場合の連結状態を説明する説明図である。FIG. 17 is an explanatory diagram for explaining a connected state in the case of a 14-turn configuration using seven two-layer wave winding coils. 図１８は、第１の２周連続コイル及び第２の２周連続コイル内の各２周連続コイル接続用の松葉形状のセグメント導体の接続関係及び第１の２周連続コイル及び第２の２周連続コイル間の接続関係を一般化した図である。FIG. 18 shows the connection relationship of the pine needle-shaped segment conductors for connecting the two continuous coils in the first two continuous coils and the second two continuous coils, and the first two continuous coils and the second two. It is the figure which generalized the connection relation between the circumference continuous coils. 図１９は、スロットをセミクローズドスロット形状とした場合のステータコアの断面図である。FIG. 19 is a cross-sectional view of the stator core when the slot has a semi-closed slot shape.
　以下、添付図面を参照してこの発明を実施するための形態について説明する。 Hereinafter, embodiments for carrying out the present invention will be described with reference to the accompanying drawings.
　図１は、永久磁石型回転電機などの回転電機に用いられる回転電機ステータを構成する際、ステータコアに波巻巻線を巻き回す状態を示す図である。図１に示すように、ステータコア１は周方向ＲＴに複数のティース２と複数のスロット３とが、ロータが挿入される領域Ｅ側である内周側に、環状に規則的に形成されている。図１では、スロット３が４８個形成されている。なお、図示しないロータの極数は８個である。また、回転電機は、電動機及び／または発電機の機能を有するものである。なお、ステータコア１は、円環状の複数の電磁鋼板を積層して構成される。 FIG. 1 is a diagram showing a state in which a wave winding is wound around a stator core when a rotating electrical machine stator used in a rotating electrical machine such as a permanent magnet type rotating electrical machine is configured. As shown in FIG. 1, in the stator core 1, a plurality of teeth 2 and a plurality of slots 3 are regularly formed in an annular shape on the inner peripheral side, which is the region E side where the rotor is inserted, in the circumferential direction RT. . In FIG. 1, 48 slots 3 are formed. Note that the number of poles of the rotor (not shown) is eight. The rotating electric machine has a function of an electric motor and / or a generator. The stator core 1 is configured by laminating a plurality of annular electromagnetic steel plates.
　本実施の形態では、ステータコア１に巻き回される巻線を、複数のセグメント導体１０を用いて波巻状に構成する。松葉形状のセグメント導体１０の両端部は、リード部側（給電部側）１ａから中心軸ＡＸ方向に所定スロットピッチでスロット３に挿入される。挿入されたセグメント導体１０の反リード部側１ｂから突出した部分、すなわちスロット挿入部から突出した部分は、周方向ＲＴに広がるように折り曲げられ、セグメント導体１０の先端１０ａは隣接する他のセグメント導体１０の先端１０ａと溶接される。この溶接によって、複数のセグメント導体１０からなる波巻巻線である第１の２周連続コイルＣＡ１が形成される。なお、巻線は、コイルエンドの高さを抑えるために、角線、特に平角線であることが好ましい。 In the present embodiment, the winding wound around the stator core 1 is formed into a wave shape using a plurality of segment conductors 10. Both end portions of the pine needle-shaped segment conductor 10 are inserted into the slots 3 at a predetermined slot pitch in the direction of the central axis AX from the lead portion side (feeding portion side) 1a. The portion of the inserted segment conductor 10 that protrudes from the opposite lead side 1b, that is, the portion that protrudes from the slot insertion portion, is bent so as to spread in the circumferential direction RT, and the tip 10a of the segment conductor 10 is adjacent to another adjacent segment conductor. 10 is welded to the tip 10a. By this welding, a first two-turn continuous coil CA1 which is a wave winding composed of a plurality of segment conductors 10 is formed. In addition, in order to suppress the height of a coil end, it is preferable that a coil | winding is a square wire, especially a flat wire.
　図２は、第１の２周連続コイルの巻回状態を示す斜視図である。また、図３（ａ）は、第１の２周連続コイルＣＡ１を直線的に展開したものをリード部側１ａからみた図である。第１の２周連続コイルＣＡ１は、セグメント導体２１～２８のそれぞれの先端１０ａが反リード部側１ｂで溶接によって直列に接続される。セグメント導体２２～２４，２６～２８のそれぞれの両端部は、６スロットピッチでスロット３に挿入される。セグメント導体２２，２６、２３，２７、２４，２８は、それぞれ１スロットピッチずれて挿入される。また、セグメント導体２２～２４は互いに６スロットピッチ隔てて配置される。同様に、セグメント導体２６～２８は互いに６スロットピッチ隔てて配置される。セグメント導体２１は、連結領域ＥＡに配置され、７スロットピッチでスロット３に挿入されるものをリード部側１ａで分離し、分離した端部である入力点ａ２を有するセグメント導体２１ａと、他の端部である出力点ａ１を有するセグメント導体２１ｂとからなる。また、連結領域ＥＡのセグメント導体２５は、１周目のコイルを２周目のコイルに接続する役割をもち、両端部が５スロットピッチでスロット３に挿入される。セグメント導体２４，２６の間に配置されるセグメント導体２５は、セグメント導体２４，２６のそれぞれに対して互いに６スロットピッチ隔てて配置される。 FIG. 2 is a perspective view showing a winding state of the first two-round continuous coil. FIG. 3A is a view of the first two-round continuous coil CA1 developed linearly as viewed from the lead portion side 1a. In the first two-turn continuous coil CA1, the tip ends 10a of the segment conductors 21 to 28 are connected in series by welding on the non-lead portion side 1b. Both end portions of the segment conductors 22 to 24 and 26 to 28 are inserted into the slot 3 at a pitch of 6 slots. The segment conductors 22, 26, 23, 27, 24, and 28 are inserted with a shift of one slot pitch. The segment conductors 22 to 24 are arranged with a 6-slot pitch therebetween. Similarly, the segment conductors 26 to 28 are arranged at a 6-slot pitch from each other. The segment conductor 21 is arranged in the connection area EA, and the one inserted into the slot 3 at a 7-slot pitch is separated at the lead portion side 1a, and the segment conductor 21a having the input point a2 which is the separated end, It consists of the segment conductor 21b which has the output point a1 which is an edge part. The segment conductor 25 in the connection area EA has a role of connecting the first coil to the second coil, and both ends thereof are inserted into the slots 3 at a pitch of 5 slots. The segment conductors 25 disposed between the segment conductors 24 and 26 are disposed at a 6-slot pitch with respect to each of the segment conductors 24 and 26.
　溶接部Ｔ２１～Ｔ２８は、反リード部側１ｂで隣接するセグメント導体の先端を溶接によって接続する。溶接部Ｔ２１は、セグメント導体２１ａ，２２間を接続する。溶接部Ｔ２２は、セグメント導体２２，２３間を接続する。溶接部Ｔ２３は、セグメント導体２３，２４間を接続する。溶接部Ｔ２４は、セグメント導体２４，２５間を接続する。溶接部Ｔ２５は、セグメント導体２５，２６間を接続する。溶接部Ｔ２６は、セグメント導体２６，２７間を接続する。溶接部Ｔ２７は、セグメント導体２７，２８間を接続する。溶接部Ｔ２８は、セグメント導体２８，２１ｂ間を接続する。 The welded portions T21 to T28 connect the tip ends of adjacent segment conductors on the side opposite to the lead portion 1b by welding. The weld T21 connects the segment conductors 21a and 22 with each other. The weld T22 connects the segment conductors 22 and 23. The welded portion T23 connects the segment conductors 23 and 24 together. The weld T24 connects the segment conductors 24 and 25. The welded portion T25 connects the segment conductors 25 and 26. The weld T26 connects the segment conductors 26 and 27. The weld T27 connects the segment conductors 27 and 28. The weld T28 connects the segment conductors 28 and 21b.
　入力点ａ２から入力された電流は、時計回り方向ＣＷに順次、セグメント導体２１ａ、溶接部Ｔ２１、セグメント導体２２、溶接部Ｔ２２、セグメント導体２３、溶接部Ｔ２３、セグメント導体２４、溶接部Ｔ２４、セグメント導体２５を流れ、１周目の波巻が終わり、さらに、順次、セグメント導体２５、溶接部Ｔ２５、セグメント導体２６、溶接部Ｔ２６、セグメント導体２７、溶接部Ｔ２７、セグメント導体２８、溶接部Ｔ２８、セグメント導体２１ｂを流れ、２周目の波巻が終わり、出力点ａ１に達する。図３（ａ）に示すように、隣接するスロット内に配置される導体は、例えばスロット位置６とスロット位置７に配置される導体は、電流方向が同一となる。 The current input from the input point a2 is sequentially, in the clockwise direction CW, segment conductor 21a, weld T21, segment conductor 22, weld T22, segment conductor 23, weld T23, segment conductor 24, weld T24, segment The conductor 25 flows through the first round, and the segment conductor 25, the welded portion T25, the segment conductor 26, the welded portion T26, the segment conductor 27, the welded portion T27, the segment conductor 28, the welded portion T28, It flows through the segment conductor 21b and the second round of wave winding ends and reaches the output point a1. As shown in FIG. 3A, the conductors arranged in the adjacent slots have the same current direction, for example, the conductors arranged at the slot position 6 and the slot position 7.
　ここで、第１の２周連続コイルＣＡ１は、６スロットピッチごとにスロット３内をジグザグに巻回されるとともに、半径方向に隣接する、内周側のレイヤＬ１と外周側のレイヤＬ２との間を交互に巻回される。なお、レイヤはスロット３内の巻回位置を表し、内周側から外周側に向けて順次、レイヤＬ１、Ｌ２、…、Ｌ８として示している。また、各セグメント導体は、ステータコア１では周方向に沿って弧状に配置されるため、リード部側１ａおよび反リード部側１ｂで、１周目の巻線と２周目の巻線とが交差する。 Here, the first two-turn continuous coil CA1 is wound in a zigzag manner in the slot 3 every six slot pitches, and is adjacent to the radially adjacent layer L1 on the inner peripheral side and the layer L2 on the outer peripheral side. It is wound alternately. The layer represents the winding position in the slot 3 and is shown as layers L1, L2,..., L8 sequentially from the inner periphery side to the outer periphery side. Further, since each segment conductor is arranged in an arc shape along the circumferential direction in the stator core 1, the first winding and the second winding intersect at the lead portion side 1a and the non-lead portion side 1b. To do.
　例えば、レイヤＬ１からリード部側１ａに出たセグメント導体２７は周方向に延びて松葉形状の頂点部２７ｔ（図２参照）でレイヤＬ２の位置にシフトしてさらに周方向に延び、６スロットピッチ目のスロットのレイヤＬ２に入る。１スロットピッチずれて配置されるセグメント導体２３も同様に、レイヤＬ１からリード部側１ａに出て周方向に延び、松葉形状の頂点部２３ｔでレイヤＬ２の位置にシフトしてさらに周方向に延び、６スロットピッチ目のスロットのレイヤＬ２に入る。ここで、セグメント導体２３は、レイヤＬ１からリード部側１ａに出てから頂点部２３ｔに至るまではセグメント導体２７の下に配置され、頂点部２３ｔから６スロットピッチ目のスロットのレイヤＬ２に入るまではセグメント導体２７の上に配置される。頂点部２７ｔ、２３ｔは、上に凸の山形形状であり、セグメント導体２７、２３の１スロットピッチのずれに応じて１スロットピッチのずれが生じている。頂点部２７ｔ、２３ｔは、セグメント導体２７、２３がレイヤＬ１からレイヤＬ２にシフトするシフトポイントであるが、１スロットピッチずれている。このため、頂点部２７ｔ、２３ｔの位置で、セグメント導体２７、２３の上下が入れ替わる交差が行われる。この交差を行うことによって、平角線がよじれることなく、各コイルエンドでの高さを抑えることができる。 For example, the segment conductor 27 extending from the layer L1 to the lead portion side 1a extends in the circumferential direction, shifts to the position of the layer L2 at a pinna shaped apex portion 27t (see FIG. 2), and further extends in the circumferential direction. Enter layer L2 of the eye slot. Similarly, the segment conductors 23 arranged with a one-slot pitch deviation extend from the layer L1 to the lead portion side 1a and extend in the circumferential direction, and shift to the position of the layer L2 at the pinna shaped vertex 23t and further extend in the circumferential direction. , Enters layer L2 of the slot of the sixth slot pitch. Here, the segment conductor 23 is disposed under the segment conductor 27 from the layer L1 to the lead portion side 1a until reaching the vertex portion 23t, and enters the layer L2 of the slot of the sixth slot pitch from the vertex portion 23t. Up to the segment conductor 27 is disposed. The apex portions 27t and 23t have an upwardly convex chevron shape, and a one-slot pitch shift occurs according to the one-slot pitch shift of the segment conductors 27 and 23. The vertex portions 27t and 23t are shift points at which the segment conductors 27 and 23 shift from the layer L1 to the layer L2, but are shifted by one slot pitch. For this reason, the intersection where the upper and lower sides of the segment conductors 27 and 23 are interchanged is performed at the positions of the vertex portions 27t and 23t. By performing this intersection, the height at each coil end can be suppressed without twisting the flat wire.
　図４は、第１の２周連続コイルＣＡ１と同じ構成の第１の２周連続コイルＣＡ２～ＣＡ４を外周方向に順次配置した場合の巻回状態を示す斜視図である。なお、図３に示すように、第１の２周連続コイルＣＡ２は、レイヤＬ３、Ｌ４間で交互に巻回される。また、第１の２周連続コイルＣＡ３は、レイヤＬ５、Ｌ６間で交互に巻回される。さらに、第１の２周連続コイルＣＡ４は、レイヤＬ７、Ｌ８間で交互に巻回される。この場合、第１の２周連続コイルＣＡ（ＣＡ１～ＣＡ４）の入力点ａ２、ａ４、ａ６、ａ８および出力点ａ１、ａ３、ａ５、ａ７は、連結領域ＥＡに集まり、半径方向ＲＣＡに沿ってそれぞれ直線的に配置される。 FIG. 4 is a perspective view showing a winding state when the first two-round continuous coils CA2 to CA4 having the same configuration as the first two-round continuous coil CA1 are sequentially arranged in the outer circumferential direction. As shown in FIG. 3, the first two-turn continuous coil CA2 is alternately wound between the layers L3 and L4. The first two-turn continuous coil CA3 is alternately wound between the layers L5 and L6. Further, the first two-turn continuous coil CA4 is alternately wound between the layers L7 and L8. In this case, the input points a2, a4, a6, a8 and the output points a1, a3, a5, a7 of the first two-turn continuous coil CA (CA1 to CA4) are gathered in the connection region EA and along the radial direction RCA. Each is arranged linearly.
　ここで、図３（ｂ）において、出力点ａ７と入力点ａ６、出力点ａ５と入力点ａ４、出力点ａ３と入力点ａ２、をそれぞれ連結することによって、入力点ａ８から出力点ａ１に至る、１つの波巻コイルが形成される。すなわち、連結領域ＥＡにおける連結によって第１の２周連続コイルＣＡ１～ＣＡ４が直列に連結される。また、この連結により、同一スロット内に配置される導体、例えばスロット位置７のレイヤＬ１、Ｌ３、Ｌ５、Ｌ７の導体は、電流方向が同一となる。 Here, in FIG. 3B, the output point a7 and the input point a6, the output point a5 and the input point a4, and the output point a3 and the input point a2 are connected to reach the output point a1. One wave winding coil is formed. That is, the first two continuous coils CA1 to CA4 are connected in series by the connection in the connection area EA. Further, due to this connection, the conductors arranged in the same slot, for example, the conductors of the layers L1, L3, L5, and L7 at the slot position 7, have the same current direction.
　さらに、図５（ａ）に示すように、第１の２周連続コイルＣＡ１と同じ構成の第２の２周連続コイルＣＢ１を時計回り方向ＣＷ側に６スロットピッチ分、シフトして配置する。この配置によって、第１の２周連続コイルＣＡ１が２つのレイヤＬ１、Ｌ２に跨って巻回される各スロットの空きレイヤに、第２の２周連続コイルＣＢ１が巻回された２レイヤ波巻コイルが形成される。ここで、コイルが巻回される同一スロット内に配置される導体、例えば、スロット位置７のレイヤＬ１とレイヤＬ２の導体は、電流方向が同一であることが必要であるため、第１の２周連続コイルＣＡ１の入力点ａ２を電流入力点とすると、第２の２周連続コイルＣＢ１の入力点ｂ２は電流出力点となり、出力点ｂ１は電流入力点となる。これによって、図５（ａ）に示すように、同一スロットにおけるコイルの電流方向が同一となる。なお、第２の２周連続コイルＣＢ１の入力点ｂ２、出力点ｂ１は、連結領域ＥＡから６スロットピッチシフトした連結領域ＥＢに配置される。 Further, as shown in FIG. 5 (a), the second two-turn continuous coil CB1 having the same configuration as the first two-turn continuous coil CA1 is arranged shifted by 6 slot pitches in the clockwise direction CW side. With this arrangement, the two-layer wave winding in which the second two-turn continuous coil CB1 is wound around the empty layer of each slot in which the first two-turn continuous coil CA1 is wound across the two layers L1 and L2. A coil is formed. Here, since the conductors arranged in the same slot around which the coil is wound, for example, the conductors of the layer L1 and the layer L2 at the slot position 7, need to have the same current direction, the first 2 When the input point a2 of the continuous loop coil CA1 is a current input point, the input point b2 of the second continuous coil CB1 is a current output point, and the output point b1 is a current input point. As a result, as shown in FIG. 5A, the current directions of the coils in the same slot are the same. Note that the input point b2 and the output point b1 of the second two-turn continuous coil CB1 are arranged in a connection region EB shifted by 6 slot pitches from the connection region EA.
　そして、図５（ｂ）および図６に示すように、第１の２周連続コイルＣＡ１～ＣＡ４と同様に、第２の２周連続コイルＣＢ１と同じ構成の第２の２周連続コイルＣＢ２～ＣＢ４を外周方向（半径方向ＲＣＢ）に向けて順次配置する。すなわち、２レイヤ波巻コイルを外周方向に向けて４つ配置する。これによって、第２の２周連続コイルＣＢ（ＣＢ１～ＣＢ４）の入力点ｂ２、ｂ４、ｂ６、ｂ８および出力点ｂ１、ｂ３、ｂ５、ｂ７は、連結領域ＥＢに集まり、半径方向ＲＣＢに沿ってそれぞれ直線的に配置される。 Then, as shown in FIG. 5B and FIG. 6, like the first two-round continuous coils CA1 to CA4, the second two-round continuous coils CB2˜ CB4 is sequentially arranged in the outer circumferential direction (radial direction RCB). That is, four two-layer wave winding coils are arranged in the outer peripheral direction. As a result, the input points b2, b4, b6, b8 and the output points b1, b3, b5, b7 of the second continuous coil CB (CB1 to CB4) are gathered in the connection region EB and along the radial direction RCB. Each is arranged linearly.
　図７に示すように、上述した第１の２周連続コイルＣＡ１～ＣＡ４および第２の２周連続コイルＣＢ１～ＣＢ４を配置することによって、隣接する２スロットに８レイヤ（Ｌ１～Ｌ８）分のコイルが、６スロットピッチ分、周方向ＲＴにシフトして密に配置される。 As shown in FIG. 7, by arranging the above-mentioned first two-round continuous coils CA1 to CA4 and second two-round continuous coils CB1 to CB4, eight layers (L1 to L8) are provided in two adjacent slots. The coils are densely arranged by shifting in the circumferential direction RT by 6 slot pitches.
　本実施の形態では、図８に示すように、第１の２周連続コイルＣＡ１～ＣＡ４では、出力点ａ７と入力点ａ６、出力点ａ５と入力点ａ４、出力点ａ３と入力点ａ２、をそれぞれ連結し、第２の２周連続コイルＣＢ１～ＣＢ４では、出力点ｂ７と入力点ｂ６、出力点ｂ５と入力点ｂ４、出力点ｂ３と入力点ｂ２、をそれぞれ連結し、さらに、最内周の第１の２周連続コイルＣＡ１の出力点ａ１と最内周の第２の２周連続コイルＣＢ１の出力点ｂ１とを連結している。これによって、ここで、コイルが巻回される同一スロット内に配置される導体、例えば、スロット位置７のレイヤＬ１とレイヤＬ２の導体は、電流方向が同一となる。また、最外周の第１の２周連続コイルＣＡ４の入力点ａ８から入力される電流は、第１の２周連続コイルＣＡ１の出力点ａ１に達し、出力点ａ１と出力点ｂ１との連結で、最内周の第２の２周連続コイルＣＢ１に折り返され、最外周の第２の２周連続コイルＣＢ４の入力点ｂ８から出力される。すなわち、第１の２周連続コイルＣＡ１～ＣＡ４（ＣＡ）と第２の２周連続コイルＣＢ１～ＣＢ４（ＣＢ）とは、１相分の１つの連続した波巻コイルを形成することになる。しかも、この場合、１相分の波巻コイルに対する電流入力点と電流出力点とが最外周側に配置されることになる。例えば、１相分の波巻コイルがＵ相である場合、電流入力点Ｕｉｎおよび電流出力点ＵＮは、各スロット３の最外周に配置されることになる。 In the present embodiment, as shown in FIG. 8, in the first two continuous coils CA1 to CA4, the output point a7 and the input point a6, the output point a5 and the input point a4, the output point a3 and the input point a2 are set. In the second two-round continuous coils CB1 to CB4, the output point b7 and the input point b6, the output point b5 and the input point b4, the output point b3 and the input point b2 are connected, respectively, and the innermost circumference The output point a1 of the first two-turn continuous coil CA1 and the output point b1 of the innermost second turn-around continuous coil CB1 are connected. Thereby, here, the conductors arranged in the same slot around which the coil is wound, for example, the conductors of the layer L1 and the layer L2 at the slot position 7, have the same current direction. Further, the current input from the input point a8 of the outermost first two-round continuous coil CA4 reaches the output point a1 of the first two-round continuous coil CA1, and the output point a1 and the output point b1 are connected. The second innermost second continuous coil CB1 is folded and output from the input point b8 of the second outermost continuous coil CB4. That is, the first two-turn continuous coils CA1 to CA4 (CA) and the second two-turn continuous coils CB1 to CB4 (CB) form one continuous wave winding coil for one phase. In addition, in this case, the current input point and the current output point for the wave winding coil for one phase are arranged on the outermost peripheral side. For example, when the one-phase wave winding coil is the U phase, the current input point Uin and the current output point UN are arranged on the outermost periphery of each slot 3.
　そして、図７に示したＵ相１相分の波巻コイルと同様に、空きスロットに、Ｖ相１相分の波巻コイルおよびＷ相１相分の波巻コイルを周方向にそれぞれ２スロットピッチ、シフトして隣接配置することによって、シングルスター結線の３相コイルを生成することができる。すなわち、図８（ｂ）に示すように、Ｕ相１相分の波巻コイル３０Ｕ、Ｖ相１相分の波巻コイル３０Ｖ、Ｗ相１相分の波巻コイル３０Ｗが中性点Ｎでシングルスター結線されたコイルを生成することができる。図８（ｂ）において、電流入力点Ｕｉｎ、Ｖｉｎ、Ｗｉｎは、それぞれＵ相、Ｖ相、Ｗ相の給電点であり、電流出力点ＵＮ、ＶＮ、ＷＮは、それぞれＵ相、Ｖ相、Ｗ相の中性点接続点である。電流入力点Ｕｉｎ、Ｖｉｎ、Ｗｉｎおよび電流出力点ＵＮ、ＶＮ、ＷＮは、各スロット３の最外周に配置されるため、電流出力点ＵＮ、ＶＮ、ＷＮを接続するのみで３相コイルを生成することができる。 Then, similarly to the U-phase one-phase wave winding coil shown in FIG. 7, the V-phase one-phase wave winding coil and the W-phase one-phase wave winding coil each have two slots in the circumferential direction. A three-phase coil with a single star connection can be generated by arranging adjacently with a pitch shift. That is, as shown in FIG. 8 (b), the wave winding coil 30 U for one phase of U phase, the wave winding coil 30 V for one phase of V phase, and the wave winding coil 30 W for one phase of W phase are at a neutral point N. Single star connected coils can be generated. In FIG. 8B, current input points Uin, Vin, and Win are U-phase, V-phase, and W-phase feed points, respectively, and current output points UN, VN, and WN are U-phase, V-phase, and W-phase, respectively. Phase neutral point connection point. Since the current input points Uin, Vin, Win and the current output points UN, VN, WN are arranged on the outermost periphery of each slot 3, a three-phase coil is generated simply by connecting the current output points UN, VN, WN. be able to.
　本実施の形態では、図９に示すように、出力点ａ７と入力点ａ６、出力点ａ５と入力点ａ４、出力点ａ３と入力点ａ２、出力点ｂ７と入力点ｂ６、出力点ｂ５と入力点ｂ４、出力点ｂ３と入力点ｂ２、最内周の出力点ａ１と最内周の出力点ｂ１、の各連結に際し、松葉形状のセグメント導体４１、４２、４３、５１、５２、５３、６０Ｕを用いて連結している。ここで、セグメント導体１０は、時計回り方向ＣＷに６スロットピッチ延びる間に頂点部で１レイヤ分、外周側のレイヤにシフトするのに対し、セグメント導体４１、４２、４３、５１，５２，５３は、時計回り方向ＣＷに７スロットピッチ延びる間に頂点部で１レイヤ分、内周側にシフトする。また、セグメント導体４１、４２、４３、５１、５２、５３は、セグメント導体１０と同様に、周方向ＲＴに広がるように曲げられて先端が溶接される。したがって、第１の２周連続コイルＣＡ１～ＣＡ４の連結及び第２の２周連続コイルＣＢ１～ＣＢ４の連結に際してリード部側１ａでの溶接は不要となる。この結果、リード部側１ａのコイルエンドの高さを抑えることができる。なお、中性点Ｎを形成する電流出力点ＵＮ、ＶＮ、ＷＮは、三つ又のセグメント導体によって連結してもよい。 In the present embodiment, as shown in FIG. 9, an output point a7 and an input point a6, an output point a5 and an input point a4, an output point a3 and an input point a2, an output point b7 and an input point b6, and an output point b5 and an input. When connecting the point b4, the output point b3 and the input point b2, the innermost output point a1 and the innermost output point b1, the pine needle shaped segment conductors 41, 42, 43, 51, 52, 53, 60U Are connected. Here, while the segment conductor 10 is shifted to the outer peripheral layer by one layer at the apex portion while extending six pitches in the clockwise direction CW, the segment conductors 41, 42, 43, 51, 52, 53 Shifts by one layer at the apex while extending seven slots in the clockwise direction CW. Similarly to the segment conductor 10, the segment conductors 41, 42, 43, 51, 52, and 53 are bent so as to spread in the circumferential direction RT and their tips are welded. Therefore, welding on the lead portion side 1a is not necessary when connecting the first two-turn continuous coils CA1 to CA4 and the second two-turn continuous coils CB1 to CB4. As a result, the height of the coil end on the lead portion side 1a can be suppressed. The current output points UN, VN, and WN that form the neutral point N may be connected by a trifurcated segment conductor.
　図１０は、回転電機ステータをリード部側１ａからみた斜視図である。図１０に示すように、リード部側１ａのコイルエンド５ａでは、Ｕ相における第１の２周連続コイルＣＡと第２の２周連続コイルＣＢとの最内周での折り返しが松葉形状のセグメント導体６０Ｕによって連結されている。同様に、Ｖ相およびＷ相でも松葉形状のセグメント導体６０Ｖ、６０Ｗによって連結されている。 FIG. 10 is a perspective view of the rotating electrical machine stator as viewed from the lead portion side 1a. As shown in FIG. 10, at the coil end 5a on the lead portion side 1a, the folds at the innermost circumference of the first two-round continuous coil CA and the second two-round continuous coil CB in the U phase are pine needle-shaped segments. The conductors 60U are connected. Similarly, the V-phase and W-phase are connected by pine needle shaped segment conductors 60V and 60W.
　ここで、セグメント導体６０Ｕ、６０Ｖ、６０Ｗは、６スロットピッチ離れたスロット位置の導体を連結する。セグメント導体６０Ｕ、６０Ｖ、６０Ｗは、レイヤＬ１同士を繋ぐので半径方向のシフトがなく、コイルエンド５ａでレイヤＬ１から突き出た両側の導体は時計回り方向ＣＷに折り曲がる。これにより、隣接するセグメント導体と干渉しない。時計回り方向ＣＷ側の突き出た導体は、隣りのセグメント導体が松葉形状の頂点部で外周側にシフトするところで反時計回り方向側に折り返される。 Here, the segment conductors 60U, 60V, 60W connect the conductors at the slot positions separated by 6 slot pitches. Since the segment conductors 60U, 60V, 60W connect the layers L1 to each other, there is no radial shift, and the conductors on both sides protruding from the layer L1 at the coil end 5a are bent in the clockwise direction CW. Thereby, it does not interfere with an adjacent segment conductor. The protruding conductor in the clockwise direction CW is folded back in the counterclockwise direction where the adjacent segment conductor shifts to the outer peripheral side at the apex of the pine needle shape.
　本実施の形態では、図１０に示すように、リード部側１ａのコイルエンド５ａでは、溶接が不要となり、しかも最外周に電流入力点Ｕｉｎ、Ｖｉｎ、Ｗｉｎおよび電流出力点ＵＮ、ＶＮ、ＷＮが配置されるため、コイルエンド５ａの半径方向の外側で中性点Ｎ（電流出力点ＵＮ）の接続配線や電源（電流入力点Ｕｉｎ）への配線ができ、コイルエンド５ａの高さを抑えることができる。 In the present embodiment, as shown in FIG. 10, the coil end 5a on the lead portion side 1a does not require welding, and the current input points Uin, Vin, Win and the current output points UN, VN, WN are on the outermost periphery. Because of the arrangement, the connection of the neutral point N (current output point UN) and the wiring to the power source (current input point Uin) can be performed outside the coil end 5a in the radial direction, and the height of the coil end 5a can be suppressed. Can do.
　また、第１の２周連続コイルＣＡおよび第２の２周連続コイルＣＢは、内周側で最短のセグメント導体６０Ｕで連結され、第１の２周連続コイルＣＡ１～ＣＡ４間、および第２の２周連続コイルＣＢ１～ＣＢ４間も最短のセグメント導体４１～４３、５１～５３で連結されるため、コイル周長が短くなり、コイルの抵抗値を抑えることができる。 Further, the first two-round continuous coil CA and the second two-round continuous coil CB are connected by the shortest segment conductor 60U on the inner circumference side, between the first two-round continuous coils CA1 to CA4, and the second Since the two continuous coils CB1 to CB4 are also connected by the shortest segment conductors 41 to 43 and 51 to 53, the coil circumferential length is shortened, and the resistance value of the coil can be suppressed.
　さらに、図１１に示すように、溶接や絶縁塗装を施すのは、反リード部側１ｂのコイルエンド５ｂのみとなるため、作業工程が簡素になるとともに絶縁品質を高めることができる。 Furthermore, as shown in FIG. 11, only the coil end 5b on the side opposite to the lead portion 1b is subjected to welding or insulation coating, so that the work process is simplified and the insulation quality can be improved.
　上述したＵ相１相の波巻コイル３０Ｕの連結をまとめると、第１の２周連続コイルＣＡ１～ＣＡ４および第２の２周連続コイルＣＢ１～ＣＢ４は図１２に示すような連結となる。なお、波巻コイル３０Ｖ、３０Ｗも同様である。Ｕ相１相分の波巻コイル３０Ｕは、第１の２周連続コイルＣＡ（ＣＡ１～ＣＡ４）及び第２の２周連続コイルＣＢ（ＣＢ１～ＣＢ４）が直列接続される。電流入力点Ｕｉｎは、レイヤＬ８に配置される第１の２周連続コイルＣＡ４の入力点ａ８に接続される。レイヤＬ７に配置される第１の２周連続コイルＣＡ４の出力点ａ７とレイヤＬ６に配置される第１の２周連続コイルＣＡ３の入力点ａ６とは松葉形状のセグメント導体４１によって接続される。レイヤＬ５に配置される第１の２周連続コイルＣＡ３の出力点ａ５とレイヤＬ４に配置される第１の２周連続コイルＣＡ２の入力点ａ４とは松葉形状のセグメント導体４２によって接続される。レイヤＬ３に配置される第１の２周連続コイルＣＡ２の出力点ａ３とレイヤＬ２に配置される第１の２周連続コイルＣＡ１の入力点ａ２とは松葉形状のセグメント導体４３によって接続される。そして、レイヤＬ１に配置される第１の２周連続コイルＣＡ１の出力点ａ１とレイヤＬ１に配置される第２の２周連続コイルＣＢ１の出力点ｂ１とは松葉形状のセグメント導体６０Ｕによって接続される。 Summarizing the connection of the U-phase one-phase wave winding coil 30U described above, the first two-turn continuous coils CA1 to CA4 and the second two-turn continuous coils CB1 to CB4 are connected as shown in FIG. The same applies to the wave winding coils 30V and 30W. A wave winding coil 30U for one U-phase is connected in series with a first two-turn continuous coil CA (CA1 to CA4) and a second two-turn continuous coil CB (CB1 to CB4). The current input point Uin is connected to the input point a8 of the first two-turn continuous coil CA4 arranged in the layer L8. The output point a7 of the first two-turn continuous coil CA4 arranged in the layer L7 and the input point a6 of the first two-turn continuous coil CA3 arranged in the layer L6 are connected by a pine needle-shaped segment conductor 41. The output point a5 of the first two-turn continuous coil CA3 arranged in the layer L5 and the input point a4 of the first two-turn continuous coil CA2 arranged in the layer L4 are connected by a pine needle-shaped segment conductor 42. The output point a3 of the first two-turn continuous coil CA2 arranged in the layer L3 and the input point a2 of the first two-turn continuous coil CA1 arranged in the layer L2 are connected by a pine needle-shaped segment conductor 43. The output point a1 of the first two-turn continuous coil CA1 arranged in the layer L1 and the output point b1 of the second two-turn continuous coil CB1 arranged in the layer L1 are connected by a pine needle-shaped segment conductor 60U. The
　レイヤＬ２に配置される第２の２周連続コイルＣＢ１の入力点ｂ２とレイヤＬ３に配置される第２の２周連続コイルＣＢ２の出力点ｂ３とは松葉形状のセグメント導体５３によって接続される。レイヤＬ５に配置される第２の２周連続コイルＣＢ２の入力点ｂ４とレイヤＬ４に配置される第２の２周連続コイルＣＢ３の出力点ｂ５とは松葉形状のセグメント導体５２によって接続される。レイヤＬ６に配置される第２の２周連続コイルＣＢ３の入力点ｂ６とレイヤＬ７に配置される第２の２周連続コイルＣＢ４の出力点ｂ７とは松葉形状のセグメント導体５１によって接続される。そして、レイヤＬ８に配置される第２の２周連続コイルＣＢ４の入力点ｂ８は、電流出力点ＵＮに接続される。 The input point b2 of the second two-round continuous coil CB1 arranged in the layer L2 and the output point b3 of the second two-round continuous coil CB2 arranged in the layer L3 are connected by a pine needle-shaped segment conductor 53. The input point b4 of the second two-round continuous coil CB2 arranged in the layer L5 and the output point b5 of the second two-round continuous coil CB3 arranged in the layer L4 are connected by a pine needle-shaped segment conductor 52. The input point b6 of the second two-round continuous coil CB3 arranged in the layer L6 and the output point b7 of the second two-round continuous coil CB4 arranged in the layer L7 are connected by a pine needle-shaped segment conductor 51. The input point b8 of the second two-turn continuous coil CB4 arranged in the layer L8 is connected to the current output point UN.
　上述したＵ相１相の波巻コイル３０Ｕは、８つ（８ターン）の２周連続コイルである、第１の２周連続コイルＣＡ１～ＣＡ４および第２の２周連続コイルＣＢ１～ＣＢ４を用いたものであったが、例えば、図１３～図１７に示すように、４ターン、６ターン、１０ターン、１２ターン、１４ターンについても同様である。 The U-phase one-phase wave winding coil 30U described above uses the first two-round continuous coils CA1 to CA4 and the second two-round continuous coils CB1 to CB4, which are eight (8-turn) two-round continuous coils. However, for example, as shown in FIGS. 13 to 17, the same applies to 4 turns, 6 turns, 10 turns, 12 turns, and 14 turns.
　ここで、図１８は、上述した第１の２周連続コイルＣＡ及び第２の２周連続コイルＣＢ内の各２周連続コイル接続用の松葉形状のセグメント導体の接続関係を一般化した図である。ここでは、波巻で２つの隣接するレイヤに跨って波巻される２周連続コイルが、巻数Ｎ（Ｎはレイヤ数、ターン数をも意味する）に対してそれぞれＮ／２個、半径方向に隣接配置される。第１の２周連続コイルＣＡは、巻数Ｎに対してＮ／２個の第１の２周連続コイルＣＡ１～ＣＡ（Ｎ／２）を有する。また、第２の２周連続コイルＣＢは、巻数Ｎに対してＮ／２個の第２の２周連続コイルＣＢ１～ＣＢ（Ｎ／２）を有する。さらに第１の２周連続コイルＣＡと第２の２周連続コイルＣＢとは、６スロットピッチずれて配置される。 Here, FIG. 18 is a diagram that generalizes the connection relationship of the pine needle-shaped segment conductors for connecting the respective two-round continuous coils in the first two-round continuous coil CA and the second two-round continuous coil CB. is there. Here, two continuous coils wound in a wave winding across two adjacent layers are each N / 2 in the radial direction with respect to the number of turns N (N also means the number of layers and the number of turns). Arranged adjacent to each other. The first two-turn continuous coil CA includes N / 2 first two-turn continuous coils CA1 to CA (N / 2) with respect to the number N of turns. The second two-round continuous coil CB includes N / 2 second two-round continuous coils CB1 to CB (N / 2) with respect to the number N of turns. Further, the first two-turn continuous coil CA and the second two-turn continuous coil CB are arranged with a 6-slot pitch shift.
　第１の２周連続コイルＣＡの入力点ａ２等に対応する入力点ａ２、ａ４、…、ａ（Ｎ－６）、ａ（Ｎ－４）、ａ（Ｎ－２）、ａ（Ｎ）は、レイヤ（Ｎ－２ｍ）、（Ｎ－２（ｍ－１））、…、（Ｎ－６）、（Ｎ－４）、（Ｎ－２）、（Ｎ）に配置され、かつ、中心軸ＡＸから放射状に延びた直線上に配置される。第１の２周連続コイルＣＡの出力点ａ１等に対応する出力点ａ１、ａ３、…、ａ（Ｎ－７）、ａ（Ｎ－５）、ａ（Ｎ－３）、ａ（Ｎ－１）は、レイヤ（Ｎ－（２ｍ＋１））、（Ｎ－（２ｍ－１））、…、（Ｎ－７）、（Ｎ－５）、（Ｎ－３）、（Ｎ－１）に配置され、かつ、中心軸ＡＸから放射状に延びた直線上に配置される。なお、ｍは１以上の整数であり、Ｎは、Ｎ＝２ｍ＋２である。 Input points a2, a4,..., A (N-6), a (N-4), a (N-2), and a (N) corresponding to the input point a2 and the like of the first continuous coil CA are , Layers (N-2m), (N-2 (m-1)), ..., (N-6), (N-4), (N-2), (N), and the central axis It arrange | positions on the straight line extended radially from AX. Output points a1, a3,..., A (N-7), a (N-5), a (N-3), a (N-1) corresponding to the output point a1, etc. of the first two-turn continuous coil CA ) Are arranged in layers (N− (2m + 1)), (N− (2m−1)),..., (N−7), (N−5), (N−3), and (N−1). And arranged on a straight line extending radially from the central axis AX. Note that m is an integer equal to or greater than 1, and N is N = 2m + 2.
　そして、第１の２周連続コイルＣＡは、レイヤ（Ｎ－１）の出力点ａ（Ｎ－１）とレイヤ（Ｎ－２）の入力点ａ（Ｎ－２）との間、レイヤ（Ｎ－３）の出力点ａ（Ｎ－３）とレイヤ（Ｎ－４）の入力点ａ（Ｎ－４）との間、レイヤ（Ｎ－５）の出力点ａ（Ｎ－５）とレイヤ（Ｎ－６）の入力点ａ（Ｎ－６）との間、…、レイヤ（Ｎ－（２ｍ－１））の出力点ａ（Ｎ－（２ｍ－１））＝ａ３とレイヤ（Ｎ－２ｍ）の入力点ａ（Ｎ－２ｍ）＝ａ２との間、がそれぞれ松葉形状のセグメント導体で接続される。 The first two-turn continuous coil CA has a layer (N−1) between the output point a (N−1) of the layer (N−1) and the input point a (N−2) of the layer (N−2). -3) between the output point a (N-3) and the input point a (N-4) of the layer (N-4), the output point a (N-5) of the layer (N-5) and the layer ( Between the input point a (N-6) of N-6), ..., the output point a (N- (2m-1)) = a3 of layer (N- (2m-1)) and layer (N-2m) ) Input points a (N−2m) = a2 are connected by pine needle-shaped segment conductors.
　同様に、第２の２周連続コイルＣＢの入力点ｂ２等に対応する入力点ｂ２、ｂ４、…、ｂ（Ｎ－６）、ｂ（Ｎ－４）、ｂ（Ｎ－２）、ｂ（Ｎ）は、レイヤ（Ｎ－２ｍ）、（Ｎ－２（ｍ－１））、…、（Ｎ－６）、（Ｎ－４）、（Ｎ－２）、（Ｎ）に配置され、かつ、中心軸ＡＸから放射状に延びた直線上に配置される。第２の２周連続コイルＣＢの出力点ｂ１等に対応する出力点ｂ１、ｂ３、…、ｂ（Ｎ－７）、ｂ（Ｎ－５）、ｂ（Ｎ－３）、ｂ（Ｎ－１）は、レイヤ（Ｎ－（２ｍ＋１））、（Ｎ－（２ｍ－１））、…、（Ｎ－７）、（Ｎ－５）、（Ｎ－３）、（Ｎ－１）に配置され、かつ、中心軸ＡＸから放射状に延びた直線上に配置される。 Similarly, input points b2, b4,..., B (N-6), b (N-4), b (N-2), b (corresponding to the input point b2 etc. of the second two-turn continuous coil CB N) are arranged in layers (N-2m), (N-2 (m-1)), ..., (N-6), (N-4), (N-2), (N), and Are arranged on a straight line extending radially from the central axis AX. Output points b1, b3,..., B (N-7), b (N-5), b (N-3), b (N−1) corresponding to the output point b1 of the second continuous coil CB, etc. ) Are arranged in layers (N− (2m + 1)), (N− (2m−1)),..., (N−7), (N−5), (N−3), and (N−1). And arranged on a straight line extending radially from the central axis AX.
　そして、第２の２周連続コイルＣＢは、レイヤ（Ｎ－１）の出力点ｂ（Ｎ－１）とレイヤ（Ｎ－２）の入力点ｂ（Ｎ－２）との間、レイヤ（Ｎ－３）の出力点ｂ（Ｎ－３）とレイヤ（Ｎ－４）の入力点ｂ（Ｎ－４）との間、レイヤ（Ｎ－５）の出力点ｂ（Ｎ－５）とレイヤ（Ｎ－６）の入力点ｂ（Ｎ－６）との間、…、レイヤ（Ｎ－（２ｍ－１））の出力点ｂ（Ｎ－（２ｍ－１））＝ｂ３とレイヤ（Ｎ－２ｍ）の入力点ｂ（Ｎ－２ｍ）＝ｂ２との間、がそれぞれ松葉形状のセグメント導体で接続される。 The second continuous coil CB has a layer (N−1) between the output point b (N−1) of the layer (N−1) and the input point b (N−2) of the layer (N−2). -3) between the output point b (N-3) of the layer (N-4) and the input point b (N-4) of the layer (N-4), and between the output point b (N-5) of the layer (N-5) and the layer ( Between the input point b (N-6) of N-6), ..., the output point b (N- (2m-1)) = b3 of the layer (N- (2m-1)) and the layer (N-2m) ) Input points b (N−2m) = b2 are connected by pine needle-shaped segment conductors.
　すなわち、ｍを１以上の整数とし、半径方向への巻数ＮをＮ＝２ｍ＋２として、第１の２周連続コイルＣＡは、巻数（Ｎ－（２ｍ－１））の位置であるレイヤ（Ｎ－（２ｍ－１））の出力点ａ（Ｎ－（２ｍ－１））と巻数（Ｎ－２ｍ）の位置であるレイヤ（Ｎ－２ｍ）の入力点ａ（Ｎ－２ｍ）との間が松葉形状のセグメント導体で接続される。また、第２の２周連続コイルＣＢは、巻数（Ｎ－（２ｍ－１））の位置であるレイヤ（Ｎ－（２ｍ－１））の出力点ｂ（Ｎ－（２ｍ－１））と巻数（Ｎ－２ｍ）の位置であるレイヤ（Ｎ－２ｍ）の入力点ｂ（Ｎ－２ｍ）との間が松葉形状のセグメント導体で接続される。そして、巻数（Ｎ－（２ｍ＋１））の位置であるレイヤ（Ｎ－（２ｍ＋１））における第１の２周連続コイルＣＡの出力点ａ（Ｎ－（２ｍ＋１））と第２の２周連続コイルＣＢの出力点ｂ（Ｎ－（２ｍ＋１））とが松葉形状のセグメント導体で接続される。 That is, m is an integer equal to or greater than 1, and the number of turns N in the radial direction is N = 2m + 2, and the first continuous coil CA has a layer (N−) at the position of the number of turns (N− (2m−1)). The pine needle is between the output point a (N- (2m-1)) of (2m-1)) and the input point a (N-2m) of the layer (N-2m) at the position of the number of turns (N-2m) Connected with segmented conductors. The second continuous coil CB has the output point b (N− (2m−1)) of the layer (N− (2m−1)) at the position of the number of turns (N− (2m−1)). The input point b (N-2m) of the layer (N-2m) which is the position of the number of turns (N-2m) is connected by a pine needle-shaped segment conductor. Then, the output point a (N− (2m + 1)) of the first two-turn continuous coil CA and the second two-turn continuous coil in the layer (N− (2m + 1)) at the position of the number of turns (N− (2m + 1)). The output point b (N− (2m + 1)) of CB is connected by a pine needle shaped segment conductor.
　いずれの場合も、最内周で、第１の２周連続コイルＣＡの出力点ａ１と第２の２周連続コイルＣＢの出力点ｂ１とが連結され、最外周に、電流入力点Ｕｉｎと電流出力点ＵＮとが配置される。 In any case, the output point a1 of the first two-turn continuous coil CA and the output point b1 of the second two-turn continuous coil CB are connected on the innermost periphery, and the current input point Uin and the current are connected to the outermost periphery. An output point UN is arranged.
　なお、本実施の形態では、図１９に示すように、スロット３は、ティース２の先端から周方向に延出する鍔部を有するセミクローズドスロット形状としている。これによって、ステータコア１の内周面での磁束漏れを抑えることができる。また、鍔部を有さないオープンスロット形状の場合には、スロット３の最内周側に挿入されるウェッジを保持するための切り欠きをティース２の先端部分に設けることが必要となるが、セミクローズドスロット形状の場合には、鍔部にウェッジが引っ掛かるため、切り欠きを設ける必要がない。 In the present embodiment, as shown in FIG. 19, the slot 3 has a semi-closed slot shape having a flange extending in the circumferential direction from the tip of the tooth 2. Thereby, magnetic flux leakage on the inner peripheral surface of the stator core 1 can be suppressed. In addition, in the case of an open slot shape that does not have a flange, it is necessary to provide a notch for holding the wedge inserted on the innermost peripheral side of the slot 3 at the tip end portion of the tooth 2, In the case of the semi-closed slot shape, the wedge is caught on the collar portion, so that it is not necessary to provide a notch.
　また、上述した実施の形態では、環状のスロット３が４８個形成され、ロータの極数が８個として、第１の２周連続コイルＣＡと第２の２周連続コイルＣＢとを６スロットピッチ、シフトして形成したが、一般に、スロット数をＮｓとし、ロータの極数をＮｐとすると、第１の２周連続コイルＣＡと第２の２周連続コイルＣＢとは、（Ｎｓ／Ｎｐ）分のスロットピッチ、シフトすればよい。 In the above-described embodiment, 48 annular slots 3 are formed, the number of poles of the rotor is 8, and the first two-round continuous coil CA and the second two-round continuous coil CB are arranged at a six-slot pitch. In general, when the number of slots is Ns and the number of poles of the rotor is Np, the first two-round continuous coil CA and the second two-round continuous coil CB are (Ns / Np) What is necessary is just to shift the slot pitch of minutes.
　１　ステータコア
　２　ティース
　３　スロット
　１ａ　リード部側
　１ｂ　反リード部側
　５ａ、５ｂ　コイルエンド
　１０、２１、２１ａ、２１ｂ、２２～２８、４１～４３、５１～５３、６０Ｕ、６０Ｖ、６０Ｗ　セグメント導体
　２３ｔ、２７ｔ　頂点部
　ａ１、ａ３、ａ５、ａ７、ａ９、ａ１１、ａ１３、ｂ１、ｂ３、ｂ５、ｂ７、ｂ９、ｂ１１、ｂ１３　出力点
　ａ２、ａ４、ａ６、ａ８、ａ１０、ａ１２、ａ１４、ｂ２、ｂ４、ｂ６、ｂ８、ｂ１０、ｂ１２、ｂ１４　入力点
　ＣＡ、ＣＡ１～ＣＡ４　第１の２周連続コイル
　ＣＢ、ＣＢ１～ＣＢ４　第２の２周連続コイル
　ＣＷ　時計回り方向
　ＥＡ、ＥＢ　連結領域
　Ｌ１～Ｌ１４　レイヤ
　Ｎ　中性点
　ＲＴ　周方向
　ＲＣＡ、ＲＣＢ　半径方向
　Ｔ２１～Ｔ２８　溶接部 1 Stator core 2 Teeth 3 Slot 1a Lead side 1b Non-lead side 5a, 5b Coil end 10, 21, 21a, 21b, 22-28, 41-43, 51-53, 60U, 60V, 60W Segment conductor 23t, 27t Vertex a1, a3, a5, a7, a9, a11, a13, b1, b3, b5, b7, b9, b11, b13 Output points a2, a4, a6, a8, a10, a12, a14, b2, b4, b6 , B8, b10, b12, b14 Input points CA, CA1 to CA4 First continuous coil CB, CB1 to CB4 Second continuous coil CW Clockwise direction EA, EB Connection region L1 to L14 Layer N Neutral Point RT Circumferential direction RCA, RCB Radial direction T21 to T28 Welded part

Claims (7)

  1. 　周方向に複数のティースと複数のスロットとが交互に環状に形成されたステータコアに所定スロットピッチでコイルが波巻された回転電機ステータの巻線構造であって、
    　リード部側に入力点および出力点を形成し、周方向に２列で２周分のコイルを所定スロットピッチで波巻した第１の２周連続コイルと前記第１の２周連続コイルと同一構造であって前記第１の２周連続コイルに対して前記周方向に対して前記所定スロットピッチずらして配置される第２の２周連続コイルとからなる２レイヤ波巻コイルを半径方向に複数配列するとともに、前記第１の２周連続コイルの前記入力点および前記出力点のそれぞれを同一半径方向に配置し、かつ、前記第２の２周連続コイルの前記入力点および前記出力点のそれぞれを同一半径方向に配置し、
    　半径方向に隣接する外周側の前記第１の２周連続コイルの出力点と内周側の前記第１の２周連続コイルの入力点とを順次連結し、半径方向に隣接する外周側の前記第２の２周連続コイルの出力点と内周側の前記第２の２周連続コイルの入力点とを順次連結し、最内周の前記第１の２周連続コイルの出力点と最内周の前記第２の２周連続コイルの出力点とを連結し、最外周の前記第１の２周連続コイルの入力点を１相分コイルの電流入力点とし、最外周の前記第２の２周連続コイルの入力点を前記１相分コイルの電流出力点とすることを特徴とする回転電機ステータの巻線構造。     A winding structure of a rotating electrical machine stator in which a coil is wave-wound at a predetermined slot pitch on a stator core in which a plurality of teeth and a plurality of slots are alternately and annularly formed in a circumferential direction,
    The same as the first two-round continuous coil and the first two-round continuous coil in which an input point and an output point are formed on the lead portion side, and two rows of coils are wound in a circumferential direction at a predetermined slot pitch. A plurality of two-layer wave winding coils having a structure and comprising a second two-round continuous coil arranged with a shift of the predetermined slot pitch with respect to the circumferential direction with respect to the first two-round continuous coil. And arranging the input point and the output point of the first two-round continuous coil in the same radial direction, and each of the input point and the output point of the second two-round continuous coil Are arranged in the same radial direction,
    The output point of the first two-round continuous coil on the outer peripheral side adjacent in the radial direction and the input point of the first two-round continuous coil on the inner peripheral side are sequentially connected, and the outer peripheral side adjacent in the radial direction is connected. The output point of the second two-continuous continuous coil and the input point of the second two-continuous continuous coil on the inner periphery side are sequentially connected, and the output point of the first two-continuous continuous coil on the innermost periphery and the innermost point The output point of the second continuous coil of the second circumference is connected, the input point of the first continuous coil of the outermost circumference is set as the current input point of the coil for one phase, and the second point of the outermost circumference A winding structure of a rotating electrical machine stator, wherein an input point of a two-turn continuous coil is a current output point of the one-phase coil.
  2. 　前記第１の２周連続コイルおよび前記第２の２周連続コイルは、リード部側から前記スロットに松葉形状のセグメント導体を挿入し、反リード部側で前記セグメント導体の端部を溶接し、
    　半径方向に隣接する外周側の前記第１の２周連続コイルの出力点と内周側の前記第１の２周連続コイルの入力点との連結、半径方向に隣接する外周側の前記第２の２周連続コイルの出力点と内周側の前記第２の２周連続コイルの入力点との連結、および最内周の前記第１の２周連続コイルの出力点と最内周の前記第２の２周連続コイルの出力点との連結は、スロット挿入部を有した松葉形状のセグメント導体によって接続されることを特徴とする請求項１に記載の回転電機ステータの巻線構造。     The first two-round continuous coil and the second two-round continuous coil insert a pine needle-shaped segment conductor into the slot from the lead portion side, and weld the end of the segment conductor on the non-lead portion side,
    Connection between the output point of the first two-round continuous coil on the outer peripheral side adjacent in the radial direction and the input point of the first two-round continuous coil on the inner peripheral side, the second on the outer peripheral side adjacent in the radial direction The connection point between the output point of the two-round continuous coil and the input point of the second two-round continuous coil on the inner peripheral side, and the output point of the first two-round continuous coil on the innermost side and the innermost side The winding structure of the rotating electrical machine stator according to claim 1, wherein the connection with the output point of the second two-turn continuous coil is connected by a pine needle-shaped segment conductor having a slot insertion portion.
  3. 　ｍを１以上の整数とし、半径方向への巻数ＮをＮ＝２ｍ＋２として、複数の前記第１の２周連続コイル間は、巻数（Ｎ－（２ｍ－１））の位置の出力点と巻数（Ｎ－２ｍ）の位置の入力点との間を、スロット挿入部を有した松葉形状のセグメント導体で接続されるとともに、複数の前記第２の２周連続コイル間は、巻数（Ｎ－（２ｍ－１））の位置の出力点と巻数（Ｎ－２ｍ）の位置の入力点との間を、スロット挿入部を有した松葉形状のセグメント導体で接続されることを特徴とする請求項１または２に記載の回転電機ステータの巻線構造。 m is an integer greater than or equal to 1, and the number of turns N in the radial direction is N = 2m + 2, and the output point and the number of turns at the position of the number of turns (N− (2m−1)) are between the plurality of first two continuous coils. The input point at the position (N-2m) is connected with a pine needle-shaped segment conductor having a slot insertion portion, and a plurality of turns (N− ( The output point at the position 2m-1)) and the input point at the number of turns (N-2m) are connected by a pine needle-shaped segment conductor having a slot insertion portion. Or the winding structure of the rotary electric machine stator of 2.
  4. 　前記第１の２周連続コイルと前記第２の２周連続コイルとは、それぞれ所定スロットピッチ毎に半径方向で交差して巻回されることを特徴とする請求項１～３のいずれか一つに記載の回転電機ステータの巻線構造。 The first two-turn continuous coil and the second two-turn continuous coil are wound so as to intersect in the radial direction at predetermined slot pitches, respectively. Winding structure of the rotating electrical machine stator described in 1.
  5. 　３つの前記１相分コイルが周方向に隣接配置され、各１相分コイルの電流入力点が各相の給電点となり、各１相分コイルの電流出力点が中性点接続点となってシングルスター結線されることを特徴とする請求項１～４のいずれか一つに記載の回転電機ステータの巻線構造。 The three one-phase coils are arranged adjacent to each other in the circumferential direction, the current input point of each one-phase coil is a feeding point for each phase, and the current output point of each one-phase coil is a neutral point connection point. The winding structure of a rotating electric machine stator according to any one of claims 1 to 4, wherein the winding structure is a single star connection.
  6. 　前記所定スロットピッチは、スロット数をロータの極数で除算した値であることを特徴とする請求項１～５のいずれか一つに記載の回転電機ステータの巻線構造。 6. The winding structure of a rotating electrical machine stator according to claim 1, wherein the predetermined slot pitch is a value obtained by dividing the number of slots by the number of poles of the rotor.
  7. 　前記スロットは、セミクローズドスロット形状であることを特徴とする請求項１～５のいずれか一つに記載の回転電機ステータの巻線構造。 6. The winding structure of a rotating electrical machine stator according to claim 1, wherein the slot has a semi-closed slot shape.
PCT/JP2017/000493 2016-02-29 2017-01-10 Winding structure for rotary electric machine stator WO2017149935A1 (en)

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CN113396528A (en) * 2019-01-25 2021-09-14 博格华纳公司 Electrical machine with distributed windings having double-cross end loops
EP4087096A4 (en) * 2019-12-31 2023-09-06 SAIC MOTOR Corporation Limited Stator winding structure and motor comprising same

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Publication number Priority date Publication date Assignee Title
JP6954374B2 (en) * 2017-12-14 2021-10-27 株式会社アイシン Stator
CN110556956B (en) * 2018-05-31 2021-12-07 比亚迪股份有限公司 Stator assembly and motor with same

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JP2014096858A (en) * 2012-11-07 2014-05-22 Denso Corp Stator and rotary electric machine

Patent Citations (1)

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JP2014096858A (en) * 2012-11-07 2014-05-22 Denso Corp Stator and rotary electric machine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113396528A (en) * 2019-01-25 2021-09-14 博格华纳公司 Electrical machine with distributed windings having double-cross end loops
EP4087096A4 (en) * 2019-12-31 2023-09-06 SAIC MOTOR Corporation Limited Stator winding structure and motor comprising same

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