JP5663206B2 - Stator and winding method thereof - Google Patents

Description

  The present invention relates to a stator and a winding method thereof, and more specifically to a stator (stator) of a rotating electric machine such as an electric motor or a generator and a winding method of a coil thereof.

  As a stator of a rotating electrical machine such as an electric motor or a generator and a winding method thereof, for example, a technique described in Patent Document 1 can be cited. As shown in FIG. 38, the technique described in Patent Document 1 includes a simulated slot 101 and a simulated tooth 102 simulating a shape in which a coil is reversely expanded so as to be inserted into a stator, and includes a simulated slot. A reel 100 is prepared in which the number of 101 is a predetermined number greater than that of an actual stator. Then, three-phase coils 103, 104, and 105 are simultaneously formed on the winding frame 100, and then removed from the winding frame 100 and inserted into the stator. In this way, by inserting the coil into the stator, the length of the connecting wire at the coil end can be minimized, the height of the coil end is reduced, and the copper loss is reduced.

JP 2009-11071 A

  By the way, in the manufacturing method described in Patent Document 1, a predetermined winding shape is formed in advance by a winding frame, the winding is removed from the winding frame, and the winding is inserted while being deformed to conform to the actual stator shape. Or, it was necessary to re-mold into a winding shape to be inserted into an actual stator and then insert it. In particular, when the rigidity of the winding is high, it is difficult to deform the winding shape, and this is not a problem in a relatively small armature, but the rigidity of the winding is a problem in a large armature.

  Further, in the case of the winding 200 of the axial gap type motor described in Patent Document 1 as shown in FIG. 39, winding is performed using a winding frame having a number of simulation slots that is a predetermined number greater than the actual number of slots of the stator. The wire is wound. For this reason, the winding shape wound around the winding frame has a large outer diameter and inner diameter, and in order to insert it into an actual stator, pressure is applied to the winding from the outer circumference side, It is necessary to deform so that the coil winding part of both ends wraps and becomes the diameter equivalent to an actual stator. In this case as well, there is a problem that when the rigidity of the winding is high, it is difficult to deform the winding shape.

  The present invention has been made in view of the above-described circumstances, and an object thereof is a stator capable of mounting a winding to the stator without changing the shape of the winding formed by the winding frame, and the winding thereof. It is to provide a line method.

In order to achieve the above object, the invention described in claim 1
In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes an annular core and 6 × m × n teeth protruding radially from the inner peripheral surface of the core toward the radially inner side, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements the end, and wherein the Rukoto is connected to the neutral point side.
The invention according to claim 2
In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes a ring-shaped core and 6 × m × n teeth that project radially from the inner peripheral surface of the core toward the radially inner side, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side.
The invention according to claim 3
In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes an annular core and 6 × m × n teeth that are provided so as to protrude in the axial direction from one axial side surface of the core, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side.
The invention according to claim 4
In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes an annular core and 6 × m × n teeth that project from the one axial side surface of the core in the axial direction, with n being an odd number.
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side.

In addition to the structure in any one of Claims 1-4 , the invention of Claim 5 is
Each of the three-phase winding elements is formed by superimposing one winding start side coil winding part of each phase one by one, and superimposing the remaining coil winding parts of each phase one by one. Each of the winding units is composed of
Of the winding start side coil winding portion of the three-phase winding, the winding start side coil winding portion of the one-phase winding sandwiched between the other two phases is the winding start of the other two-phase winding It differs from the winding direction of a side coil winding part.

The invention described in claim 6
A stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and a three-phase winding consisting of a first phase, a second phase, and a third phase are slots between the teeth. In the stator winding method, inserted into
Preparing a reel having 3 × m × (n + 1) simulated slots defined by simulated teeth imitating the teeth;
A mock slot group composed of m × (n + 1) mock slots for each phase in which m mock slots are arranged with an electrical angle shifted by approximately 180 ° between the adjacent ones. The winding element of each phase having a predetermined number of coil winding portions, which is configured by winding a predetermined number of times in series while reversing the winding direction, the winding start side coil winding portion of each phase Forming two winding units in which the winding elements of each phase are superposed while superposing one by one and arranging the remaining coil winding portions of each phase one by one,
The two winding units removed from the winding frame are divided into coil winding portions on the winding start side and winding end side of the two winding elements of each phase, and m slots each having an electrical angle of approximately 180. The two winding elements of each phase share the slots for each phase so that they share an arbitrary slot of the slot group for each phase constituted by 2 × m × n slots arranged at an offset A process of being accommodated in each group and attached to the stator core;
It is characterized by providing.

The invention according to claim 7, in addition to the configuration according to claim 6,
Of the winding start side coil winding portion of the three-phase winding, the winding start side coil winding portion of the one-phase winding sandwiched between the other two phases is the winding start of the other two-phase winding It differs from the winding direction of a side coil winding part.

In addition to the structure of Claim 6 or 7 , the invention of Claim 8 is
The winding frame has the simulated teeth and the simulated slots having substantially the same shape as the teeth and slots of the stator,
The two winding units removed from the winding frame are respectively accommodated in the slot groups for each phase and attached to the stator core while substantially maintaining their shapes.

In addition to the structure of Claim 8 , the invention of Claim 9 is
In the two winding units removed from the winding frame, a part of each winding start side coil winding portion of the two winding elements of each phase is arranged so that each winding end side coil of the two winding elements Combined so as to be located on the outer peripheral side of a part of the winding part,
For the combined two winding units, a plurality of split stator core teeth that constitute the stator core are inserted from the outer peripheral side, and the core portions of the split stator core are joined together,
An outer ring is press-fitted into the outer periphery of the core portion of the divided stator core.

The invention according to claim 10, in addition to the configuration of any one of claims 6-9,
The stator core includes an annular core and 6 × m × n teeth protruding radially from the inner peripheral surface of the core toward the radially inner side, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. The coil winding part is wound.

The invention according to claim 11, in addition to the configuration of any one of claims 6-9,
The stator core includes a ring-shaped core and 6 × m × n teeth that project radially from the inner peripheral surface of the core toward the radially inner side, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. The coil winding part is wound.

In addition to the structure of Claim 10 or 11 , the invention of Claim 12 is
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side.

The invention according to claim 13, in addition to the configuration according to any of claims 6 8,
The stator core includes an annular core, and 6 × m × n teeth protruding in the axial direction from one axial side surface of the core, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. The coil winding part is wound.

The invention according to claim 14, in addition to the configuration according to any of claims 6 8,
The stator core includes an annular core and 6 × m × n teeth protruding from an axial side surface of the core in the axial direction, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. The coil winding part is wound.

In addition to the structure of Claim 13 or 14 , the invention of Claim 15 is
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side.

According to the first to fifth and sixth to ninth aspects , the winding can be mounted on the stator without changing the shape of the winding formed by the winding frame. Moreover, even if the winding temperature in the vicinity of the winding start side coil winding portion and the winding end side coil winding portion is different by configuring the windings of each phase in two parallel by two winding elements, If there is no temperature difference in the vicinity of the coil winding portion, the currents flowing in the slots are the same, and torque fluctuations caused by the current difference in each slot can be prevented and vibration can be reduced. In addition, since the windings of each phase are configured in parallel, the number of connection man-hours can be reduced. Furthermore, the windings of each phase have the same shape, and the coil end portions on the connecting wire side and the lead wire side of each phase are not sparse, and the coil end portions on the connecting wire side and the lead wire side of each phase are not The occupied area can be minimized, the length of the coil end portion can be minimized, and the phase resistance of each phase and the phase inductance of each phase can be made uniform. In addition, the windings of each phase have the same shape and the back electromotive force of each phase is the same, so the current flowing in the three phases is the same, preventing torque fluctuations caused by the phase current difference of each phase, Vibration can be reduced.

According to the first , second , eighth, and ninth aspects, the stator of the radial gap type motor can be configured even when the number of winding pole pairs is an even number or an odd number.

According to the third , fourth , thirteenth and fourteenth aspects, the stator of the axial gap type motor can be configured even when the number of winding pole pairs is even or odd.

According to claims 1 to 4 , 12 and 15 , the winding end connected to the input side and the winding end connected to the neutral point side are separately collected in the circumferential direction and derived. Can do.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view schematically showing a stator of a radial gap type motor according to a first embodiment of the present invention, and shows a state where a coil is wound around a stator having a single slot and a number of winding pole pairs of four. It is a top view of the starter of FIG. FIG. 2 is a winding pattern diagram on the lead wire side of the stator of FIG. 1. (A) is a developed view schematically showing the coil shown in FIG. 1, and (b) is a side view of the stator as viewed from the direction A on the crossover side of (a). It is a top view which shows the winding frame for outer winding for winding the coil of FIG. It is a winding pattern figure which shows the state by which the U phase winding start side (1st) coil winding part of the 1st winding unit was wound by the winding frame. It is a winding pattern figure which shows the state by which the winding start side (1st) coil winding part of W phase was wound by the winding frame. It is a winding pattern figure which shows the state by which the winding start side (1st) coil winding part of V phase was wound by the winding frame. It is a winding pattern figure which shows the state by which the remainder (2nd) coil winding part of U phase was wound by the winding frame. It is a winding pattern figure which shows the state by which the remaining (2nd) coil winding part of W phase was wound by the winding frame. It is a winding pattern figure which shows the state by which the remainder (2nd) coil winding part of V phase was wound by the winding frame. It is a winding pattern figure which shows the state by which the winding end side coil winding part of each phase is wound by the winding frame, and an arc-shaped pressing member is removed. It is a figure which shows the process of removing simulated teeth from a winding frame. It is a figure which shows the process of removing the 1st jig | tool from a winding frame. It is a figure which shows the process of removing the 2nd jig | tool from a winding frame. It is a figure which shows the process of removing a 3rd jig | tool from a winding frame. It is a figure which shows the process of removing a 4th jig | tool from a winding frame. It is a figure which shows the process of isolate | separating a winding frame main body and a 1st winding unit. It is a figure which shows the 1st coil | winding unit isolate | separated from the winding frame. It is a winding pattern figure which shows the state by which the winding start side (1st) coil winding part of the U phase of the 2nd winding unit was wound by the winding frame. It is a winding pattern figure which shows the state by which the coil winding part of each phase of the 2nd winding unit was wound by the winding frame. It is a winding pattern figure which shows the 2nd winding unit isolate | separated from the winding frame. It is a winding pattern figure which shows the state which combines a 1st winding unit and a 2nd winding unit. It is a figure which shows the state which combines a 1st winding unit and a 2nd winding unit. It is a winding pattern figure which shows the state which combined the 1st winding unit and the 2nd winding unit. It is a figure which shows the state which combined the 1st winding unit and the 2nd winding unit. It is a winding pattern figure which shows the process of inserting a division | segmentation stator core in the combined 1st winding unit and 2nd winding unit. It is a winding pattern figure which shows the process of couple | bonding the division | segmentation stator core inserted in the 1st winding unit and the 2nd winding unit. (A) is a single slot, and schematically shows a state in which the coil is wound around a stator having two winding pole pairs according to a modification of the first embodiment of the present invention. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a schematic view of a state in which a coil is wound around a stator having a single slot and a number of winding pole pairs of 3, according to another modification of the first embodiment of the present invention. (B) is a side view of the stator as viewed from the direction A in (a). (A) is a double slot according to the second embodiment of the present invention, and shows a state in which the coil is wound concentrically around a stator having a number of winding pole pairs of 4 by developing the coil. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a double slot according to the second embodiment of the present invention, and shows a state in which the coil is wound concentrically around a stator having a number of winding pole pairs of 4 by developing the coil. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a double slot according to a modification of the second embodiment of the present invention, in which the coil is unrolled in a pitch winding manner around a stator having a winding pole pair number of 4; It is a development view typically shown, and (b) is a side view of the stator viewed from direction A in (a). (A) is a double slot according to a modification of the second embodiment of the present invention, in which the coil is unrolled in a pitch winding manner around a stator having a winding pole pair number of 4; It is a development view typically shown, and (b) is a side view of the stator viewed from direction A in (a). (A) is a double slot according to another modification of the second embodiment of the present invention, and shows a state where the coil is wound by pitch winding on a stator having a winding pole pair number of 3; FIG. 4B is a developed view schematically showing (b) a side view of the stator as viewed from the direction A in (a). (A) is a double slot according to another modification of the second embodiment of the present invention, and shows a state where the coil is wound by pitch winding on a stator having a winding pole pair number of 3; FIG. 4B is a developed view schematically showing (b) a side view of the stator as viewed from the direction A in (a). (A) is a double slot according to still another modification of the second embodiment of the present invention, and shows a state in which the coil is wound concentrically on a stator having a winding pole pair number of 3. FIG. 2 is a developed view schematically showing the developed state, and (b) is a side view of the stator as viewed from the direction A in (a). (A) is a double slot according to another modification of the second embodiment of the present invention, in which the coil is unfolded in a state where the coil is wound concentrically on a stator having a winding pole pair number of 3. FIG. 4B is a developed view schematically showing (b) a side view of the stator as viewed from the direction A in (a). (A) is a triple slot according to the third embodiment of the present invention, and shows a state in which the coil is wound by pitch winding around a stator having a number of winding pole pairs of 4 by developing the coil schematically. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a triple slot according to the third embodiment of the present invention, and shows a state in which the coil is wound by pitch winding around a stator having a number of winding pole pairs of 4 by developing the coil schematically. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a triple slot according to the third embodiment of the present invention, and shows a state in which the coil is wound by pitch winding on a stator having a number of winding pole pairs of 3 by developing the coil schematically. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). (A) is a triple slot according to the third embodiment of the present invention, and shows a state in which the coil is wound by pitch winding on a stator having a number of winding pole pairs of 3 by developing the coil schematically. It is a developed view to show, (b) is a side view of the stator seen from the direction A of (a). It is a top view which shows typically the stator of the axial gap type motor based on the modification of this invention, and shows the state by which the coil is wound by the stator which is a single slot and the number of winding pole pairs is six. It is a perspective view which shows the winding frame applied to the winding method of the conventional stator. It is a front view which shows the coil | winding of the conventional axial gap type motor.

  Hereinafter, embodiments of a stator according to the present invention will be described in detail with reference to the drawings. The drawings are viewed in the direction of the reference numerals.

<First Embodiment>
As shown in FIG. 1, the stator 1 is a stator of a rotating electric machine such as an electric motor or a generator, and is disposed on the outer periphery of a rotor 2 (shown by an imaginary line). Specifically, the stator 1 is a radial gap brushless motor stator, and the rotor 2 includes, for example, four pole pairs (the number of winding pole pairs n = 4), that is, eight permanent magnets.

  The stator 1 has a stator core 5 in which a plurality (24 in the present embodiment) of divided stator cores 3 having the same shape and the same dimensions are arranged on the circumference. Each divided stator core 3 is formed by laminating thin plates manufactured from iron-based materials (or sintering or dust-molding iron-based materials), has a substantially T-shape, and is the center of an arc-shaped core portion 3a. Teeth portion 3b protrudes radially inward from the inner side. The core portion 3a of the split stator core 3 is connected in an annular shape to form an annular core 5a, and the convex portion 3c of the adjacent core portion 3a and the concave portion 3d of the core portion 3a are engaged to form an annular shape. The core portion 3a is firmly held by fitting the outer peripheral ring 4 from the outside.

  In the stator core 5 coupled in this manner, 24 teeth (saliency poles) 5b project radially inwardly at every electrical angle of 60 degrees, and between the teeth 5b, slots (gap) 5c are provided. Are similarly formed every 60 electrical angles. In the stator core 5 shown in FIG. 1, the numbers of the teeth 5b and the slots 5c are each represented by 6 × m × n (= 24). m is an integer, and n is the value of the number of winding pole pairs of the rotor 2.

  In the slot 5c, each phase is constituted by two winding elements, ie, U-phase winding elements 6a and 6b, V-phase winding elements 7a and 7b, and W-phase winding elements 8a and 8b. , W, three-phase windings 6, 7, and 8 are inserted. The windings 6, 7, and 8 may be bundled wires made of thin electric wires (enameled wires), or may be single wires having a diameter of 0.8 mm or more, preferably 1.0 mm or more. The windings 6, 7, and 8 of each phase are 2 × m × n (in this embodiment) in which m (one in this embodiment) slots 5 c are arranged with an electrical angle shifted by approximately 180 °. , 8) slot groups 20a, 20b, and 20c (see FIG. 4) for each phase constituted by the slots 5c, while reversing the winding direction between adjacent ones, a predetermined number of times (for example, several tens) 8 coil winding portions 16a1 to 16a4, 16b1 to 16b4, 17a1 to 17a4, 17b1 to 17b4, 18a1 to 18a4, and 18b1 to 18b4, each of which is configured by being wound by turns. In FIG. 1 and the like, for the convenience of illustration, the number of turns (number of turns) of the windings 6, 7, and 8 is three. Further, in the stator 1 shown in FIG. 1 and the stator 1h shown in FIG. 36, which will be described later, actually, the windings 6 along the shape of the teeth 5b are formed so as to reduce the gap between the coil end portion and the teeth. 7 and 8 are wound.

  In other words, in the present embodiment, the slot groups 20a, 20b, and 20c for each phase are configured by a total of eight slots 5c that are positioned so as to straddle the two slots 5c for other phases. As shown in FIG. 2, the U-phase winding elements 6 a and 6 b constitute the same number of U-phase coil winding portions 16 a 1 to 16 a 4 and 16 b 1 to 16 b 4, which are the same number (four in this embodiment). The V-phase winding elements 7a and 7b constitute a predetermined number (four in this embodiment) of V-phase coil winding portions 17a1 to 17a4 and 17b1 to 17b4, which are the same number as each other, and the W-phase. The winding elements 8a and 8b constitute a predetermined number (four in this embodiment) of W-phase coil winding portions 18a1 to 18a4 and 18b1 to 18b4, which are the same number as each other.

  In addition, one of the two winding elements 6a, 7a, 8a of each phase is overlapped one by one with the winding start side coil winding portions 16a1, 17a1, 18a1 of each phase by a winding method described later, The remaining coil winding portions 16a2 to 16a4, 17a2 to 17a4, and 18a2 to 18a4 of each phase are also formed one by one. Similarly, in the other winding elements 6b, 7b, 8b, the winding start side coil winding portions 16b1, 17b1, 18b1 of each phase are overlapped one by one, and the remaining coil winding portions 16b2- of each phase are overlapped. 16b4, 17b2 to 17b4, and 18b2 to 18b4 are also formed one by one. Thus, two winding units 9a and 9b are configured.

  Specifically, referring to FIGS. 2 and 3, U-phase coil winding portions 16a1 to 16a4 of U-phase winding element 6a are provided with U-phase slots 5c1 and 5c4 that constitute U-phase slot group 20a. , 5c7, 5c10, and 5c13 are wound a predetermined number of times in series while reversing the winding direction of adjacent ones. The U-phase coil winding portions 16b1 to 16b4 of the U-phase winding element 6b are also adjacent to the U-phase slots 5c13, 5c16, 5c19, 5c22, and 5c1 constituting the U-phase slot group 20a. It is wound a predetermined number of times in series while reversing the winding direction of each other. For this reason, the winding start side U-phase coil winding portion 16a1 of the U-phase winding element 6a and the winding end side coil winding portion 16b4 of the U-phase winding element 6b are cores of the winding start side U-phase coil winding portion 16a1. The U-phase slot 5c1 is shared and accommodated so as to be located on the side. The winding end side U-phase coil winding portion 16a4 of the U-phase winding element 6a and the winding start side coil winding portion 16b1 of the U-phase winding element 6b are the same as the winding start side U-phase coil winding portion 16b1. And the U-phase slot 5c13 is shared and accommodated.

  The U-phase coil winding portions 17a1 to 17a4 of the V-phase winding element 7a are adjacent to the U-phase slots 5c3, 5c6, 5c9, 5c12, and 5c15 constituting the V-phase slot group 20b. It is wound a predetermined number of times in series while reversing the winding direction. The V-phase coil winding portions 17b1 to 17b4 of the V-phase winding element 7b are also adjacent to the V-phase slots 5c15, 5c18, 5c21, 5c24, and 5c3 constituting the V-phase slot group 20b. It is wound a predetermined number of times in series while reversing the winding direction. Therefore, the winding start side V-phase coil winding portion 17a1 of the V-phase winding element 7a and the winding end side coil winding portion 17b4 of the V-phase winding element 7b are the cores of the winding start side V-phase coil winding portion 17a1. The V-phase slot 5c3 is shared and accommodated so as to be positioned on the side. The winding end side V-phase coil winding portion 17a4 of the V-phase winding element 7a and the winding start side coil winding portion 17b1 of the V-phase winding element 7b are the same as the winding start side V-phase coil winding portion 17b1. So that the V-phase slot 5c15 is shared.

  Furthermore, the W-phase coil winding portions 18a1 to 18a4 of the W-phase winding element 8a are adjacent to the W-phase slots 5c2, 5c5, 5c8, 5c11, and 5c14 constituting the W-phase slot group 20c. It is wound a predetermined number of times in series while reversing the winding direction of each other. The W-phase coil winding portions 18b1 to 18b4 of the W-phase winding element 8b are also adjacent to the W-phase slots 5c14, 5c17, 5c20, 5c23, and 5c2 constituting the W-phase slot group 20c. It is wound a predetermined number of times in series while reversing the winding direction of each other. Therefore, the winding start side W-phase coil winding portion 18a1 of the W-phase winding element 8a and the winding end side coil winding portion 18b4 of the W-phase winding element 8b are the cores of the winding start side W-phase coil winding portion 18a1. The W-phase slot 5c2 is shared and accommodated so as to be located on the side. The winding end side W-phase coil winding portion 18a4 of the W-phase winding element 8a and the winding start side coil winding portion 18b1 of the W-phase winding element 8b are the same as the winding start side W-phase coil winding portion 18b1. The W-phase slot 5c14 is shared and accommodated.

  In addition, winding end portions 6aa, 6ab, 6ba, 6bb of U-phase winding elements 6a, 6b, winding end portions 7aa, 7ab, 7ba, 7bb of V-phase winding elements 7a, 7b, and W-phase winding elements Winding ends 8aa, 8ab, 8ba, 8bb of 8a, 8b are all drawn from one axial end side of the stator 1 and connected to an energization switching device such as an inverter. The winding end portion 6aa of the winding start side U-phase coil winding portion 16a1 of the U-phase winding element 6a and the winding end portion 6bb of the winding end side U-phase coil winding portion 16b4 of the U-phase winding element 6b are both It is derived from the slot 5c1 and connected to the input side (positive electrode) for inputting power. On the other hand, the winding end 6ab of the winding end side U-phase coil winding portion 16a4 of the U-phase winding element 6a and the winding end portion 6ba of the winding start side U-phase coil winding portion 16b1 of the U-phase winding element 6b are: , Are derived from the slots 5c10 and 5c16, respectively, and are connected to the neutral point side on the side opposite to the input side (negative electrode), that is, the Y connection (or Δ connection).

  The winding end portion 7aa of the winding start side V phase coil winding portion 17a1 of the V phase winding element 7a and the winding end portion 7bb of the winding end side V phase coil winding portion 17b4 of the V phase winding element 7b are both Derived from the slot 5c3 and connected to the input side, the winding end side 7ab of the winding end side V phase coil winding portion 17a4 of the V phase winding element 7a and the winding start side V phase of the V phase winding element 7b The winding end portion 7ba of the coil winding portion 17b1 is led out from the slots 5c12 and 5c18, respectively, and is connected to the neutral point side.

  The winding end 8aa of the winding start side W phase coil winding portion 18a1 of the W phase winding element 8a and the winding end portion 8bb of the winding end side W phase coil winding portion 18b4 of the W phase winding element 8b are slots. 5c5 and 5c23, respectively, and connected to the input side, while the winding end 8ab of the W-phase coil winding portion 18a4 and the winding start side of the W-phase winding element 8b of the W-phase winding element 8a The winding end portion 8ba of the W-phase coil winding portion 18b1 is both led out from the slot 5c14 and connected to the neutral point side.

  As a result, the winding ends 6aa, 7aa, 8aa provided on the winding start side coil winding portions 16a1, 17a1, 18a1 of one winding element 6a, 7a, 8a of each phase connected to the input side, and The winding end portions 6bb, 7bb, 8bb provided on the winding end side coil winding portions 16b4, 17b4, 18b4 of the other winding elements 6b, 7b, 8b of the respective phases are arranged in the circumferential direction of the stator 1. It is arranged near one part. Further, winding end portions 6ab, 7ab, 8ab provided at the winding end side coil winding portions 16a4, 17a4, 18a4 of one winding element 6a, 7a, 8a of each phase connected to the neutral point side. And winding end portions 6ba, 7ba, 8ba provided at the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of each phase are point-symmetric with respect to the one portion. The stator 1 is disposed close to the other circumferential portion. Thereby, each coil | winding edge part is arrange | positioned easily at the input side and the neutral point side, respectively.

  Here, the wire at the winding end on the positive and negative sides of these winding elements is referred to as “lead wire”, one end in the axial direction of the stator 1 where the lead wire is arranged is “lead wire side”, and the lead wire is The other axial end side of the stator 1 that is not drawn out is referred to as a “crossover line side”.

  In addition, in the winding pattern diagram of FIG. 3 and the like, the continuation of three-phase winding elements 6a, 6b, 7a, 7b, 8a, and 8b composed of U, V, and W phases is indicated by numbers from 01 to 24. As indicated by the arrows in the figure, the windings are wound so that the numbers are continuous. In FIG. 4 etc., the neutral point side is also shown by adding an underbar.

  Further, the winding elements 6a, 6b, 7a, 7b, 8a, 8b of each phase are radial gap type motors and are the stators 1 having an even number of pole pairs, so that one winding element 6a, 7a, 8a of each phase is used. The winding start side coil winding portions 16a1, 17a1, 18a1 and the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the respective phases are made different. The two winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase are formed in different winding methods. Thereby, the current flowing directions of the winding elements 6a, 6b, 7a, 7b, 8a, and 8b of the respective phases accommodated in the shared slots 5c1 to 5c3 and 5c13 to 5c15 can be matched.

  Further, in the winding units 9a and 9b, two phases (U phase and V phase) of the three phase winding start side coil winding portions 16a1, 16b1, 17a1, 17b1, 18a1, and 18b1 are in any direction (clockwise or The remaining one phase (W phase) is wound in a direction opposite to the arbitrary direction, and the remaining coil winding portions 16a2 to 16a4, 16b2 to 16b4, 17a2 to 17a4 are wound. , 17b2 to 17b4, 18a2 to 18a4, and 18b2 to 18b4 are also formed by third phase reverse rotation winding in which one phase (W phase) is reverse rotation winding.

  Further, in the present embodiment, an outer winding that is a winding direction when viewed from a predetermined direction (for example, the lead-out line side) and is wound outward in the circumferential direction of the stator 1 is employed. The stator 1 may be wound with an inner winding which is a winding direction toward the center in the circumferential direction. Further, the winding direction is a winding method when viewed from a predetermined direction (for example, the lead wire side), and adjacent coil winding parts of each phase are wound start side coil winding parts 16a1, 16b1, 17a1. , 17b1, 18a1, and 18b1 are formed clockwise, but may be formed counterclockwise. Therefore, any of the four patterns is employed in the third-phase (W-phase) reverse rotation winding method of the present embodiment.

  In the winding wound around the stator 1 in this way, as shown in FIG. 2, the three-phase winding elements 6a, 7a, 8a, 6b, 7b, and 8b are connected to the winding elements 6a, 7a, 8a, 6b, 7b, 8b, the adjacent coil winding portions 16a1 to 16a4, 16b1 to 16b4, 17a1 to 17a4, 17b1 to 17b4, and 18a1 extending from the slot 5c on the lead wire side and the connecting wire side of the slot 5c. The remaining two-phase winding elements 6a, 7a, 8a, 6b, 7b, 8b are sandwiched between 18a4, 18b1 to 18b4.

Next, a winding method of the stator 1 will be described with reference to FIGS.
As shown in FIG. 5, the reel 30 is detachably attached to a reel main body 31 that forms a small-diameter arc 31 a and a large-diameter arc 31 b and a plurality of recesses 31 c formed in the small-diameter arc 31 a of the reel main body 31. A plurality of simulated teeth 32 having an outer diameter substantially equal to that of the large-diameter arc 31b, and one step portion 31d between the small-diameter arc 31a and the large-diameter arc 31b to the third simulated teeth 32 are mounted. The first to fourth piece members 33 to 36 that are disposed between the first and fourth piece members 33 to 36 that contact the straight portion 31e that linearly extends from the step portion 31d, and an arc shape that can rotate along the large-diameter arc 31b of the winding frame 31. Holding member 37. As a result, the reel 30 defines 3 × m × (n + 1) simulated slots s1 to s15 by the simulated teeth 32 (in this embodiment, m = 1, n = 4, a total of 15), A simulated slot group for each phase is formed by m × (n + 1) simulated slots for each phase in which m simulated slots are arranged with an electrical angle shifted by approximately 180 °. The simulated slot s1 is formed between the first piece member 33 and the simulated teeth 32, and the simulated slots s1 to s3 have a smaller radial dimension than the other simulated slots s4 to s15. It is set to almost half. Moreover, although the simulation teeth 32 shown in FIG. 5 etc. are typically shown linearly, they have substantially the same shape simulating the teeth portion 3b shown in FIG. s15 also has substantially the same shape.

  6. First, as shown in FIG. 6, the winding end 6aa of the U-phase winding element 6a is inserted from the simulated slot s1, and the U-phase winding element 6a is arbitrarily inserted between the simulated slots s1 and s4. Is wound a predetermined number of times by external winding to form a winding start side coil winding portion 16a1. Next, as shown in FIG. 7, the arc-shaped pressing member 37 is rotated so as to close the simulated slot s1, and the winding start side U-phase coil winding portion 16a1 is held in the simulated slot s1. Further, the winding end 8aa of the W-phase winding element 8a is inserted from the simulated slot s5, and the W-phase winding element 8a is externally wound in a direction opposite to an arbitrary direction between the simulated slots s2 and s5. Winding is performed a predetermined number of times to form a winding start side W-phase coil winding portion 18a1.

  Further, as shown in FIG. 8, the arc-shaped pressing member 37 is rotated so as to close the simulated slots s1, s2, and the winding start side coil winding portions 16a1, 18a1 are held in the simulated slots s1, s2. Further, the winding end 7aa of the V-phase winding element 7a is inserted from the simulated slot s3, and the V-phase winding element 7a is externally wound in the arbitrary direction between the simulated slots s3 and s6 a predetermined number of times. Winding is performed to form a winding start side V-phase coil winding portion 17a1. Thereby, the winding start side coil winding parts 16a1, 18a1, and 17a1 of the U phase, the W phase, and the V phase are overlapped one by one in a state where the W phase is reversely wound.

  In addition, as shown in FIGS. 9 to 11, the U-phase winding element 6a is arranged in series between the simulated slots s4 and s7 while inverting the winding direction of the winding start side U-phase coil winding portion 16a1. And winding the W-phase winding element 8a between the simulated slots s5 and s8 in series in a predetermined number of times while reversing the winding direction of the winding start side W-phase coil winding portion 18a1. The V-phase winding element 7a is wound between the simulated slots s6 and s9 by a predetermined number of times in series while inverting the winding direction of the winding start side V-phase coil winding portion 17a1. Thereby, the second coil winding portions 16a2, 18a2, and 17a2 of the U phase, the W phase, and the V phase are overlapped one by one. Further, the arc-shaped pressing member 37 is sequentially rotated so as to close the simulated slots s4 and s5 that have received the winding elements 6a, 7a, and 8a of the respective phases.

  Thereafter, in the same manner, the U-phase winding element 6a, the W-phase winding element 8a, and the V-phase winding element 7a are sequentially wound into the simulated slot groups for the respective phases and the windings of the coil winding portions adjacent to each other are wound. By winding a predetermined number of times in series while reversing the rotating direction, as shown in FIG. 12, a predetermined number (four in this embodiment) of coil winding portions 16a1 to 16a4, 17a1 to 17a4, 18a1 18a4 is formed. As a result, the winding end 6ab of the winding end side U-phase coil winding portion 16a4 is led out from the simulated slot s10, and the winding end portion 8ab of the winding end side W-phase coil winding portion 18a4 extends from the simulation slot s14. The winding end portion 7ab of the winding end side V-phase coil winding portion 17a4 is led out from the simulated slot s12.

  After the first winding unit 9a is formed in this way, the arc-shaped pressing member 37 is removed from the winding frame 30 as shown in FIG. 12, and the simulated teeth 32 are attached to the winding body as shown in FIG. Remove from 31. Then, as shown in FIGS. 14 to 18, the first to fourth piece members 33 to 36 are sequentially removed from the reel body 31, and finally the first winding unit 9 a is removed from the reel body 31. Thus, the first winding unit 9a as shown in FIG.

  Next, using the above-described winding frame 30, as with the first winding unit 9a, the other winding element 6b for the U phase, the other winding element 8b for the W phase, and the other winding element for the V phase. 7b is wound to form a second winding unit 9b. However, since it is a radial gap type motor and the stator 1 has an even number of pole pairs, the winding start side coil winding portions 16b1, 18b1, 17b1 of the other winding elements 6b, 8b, 7b of each phase are one of the phases. The winding directions of the winding elements 6a, 8a and 7a are different from those of the winding start side coil winding portions 16a1, 18a1 and 17a1. That is, as shown in FIG. 20, in the U-phase winding element 6b, the winding end 6ba of the U-phase winding element 6b is inserted from the simulated slot s4, and the U-phase winding element 6b is used for the U-phase between the simulated slots s1 and s4. The winding element 6b is wound a predetermined number of times in the direction opposite to an arbitrary direction by external winding to form a winding start side U-phase coil winding portion 16b1.

  Further, in the W-phase winding element 8b, the winding end portion 8ba of the W-phase winding element 8b is inserted from the simulated slot s2, and the W-phase winding element 8a is arbitrarily set between the simulated slots s2 and s5. The winding start side W-phase coil winding portion 18b1 is formed by winding a predetermined number of times in the outer direction. Further, in the V-phase winding element 7b, the winding end 7ba of the V-phase winding element 7b is inserted from the simulated slot s6, and the V-phase winding element 7b is inserted between the simulated slots s3 and s6. Winding is performed a predetermined number of times by external winding in the direction opposite to an arbitrary direction to form a winding start side V-phase coil winding portion 17b1.

  In this way, as shown in FIG. 21, each of the simulated slot groups for each phase is configured by being wound a predetermined number of times in series while inverting the winding direction of adjacent ones. The other winding elements 6b, 8b and 7b of each phase having a number of coil winding portions are overlapped one by one with the winding start side coil winding portions 16b1, 18b1 and 17b1 of each phase, and the rest of each phase The coil winding portions 16b2 to 16b4, 18b2 to 18b4, 17b2 to 17b4 are arranged one by one, and a predetermined number of coil winding portions 16b1 to 16b4, 17b1 to 17b4, 18b1 to 18b4 are formed. As a result, the winding end 6bb of the winding end side U-phase coil winding portion 16b4 is led out from the simulated slot s13, and the winding end portion 8bb of the winding end side W-phase coil winding portion 18b4 extends from the simulation slot s11. The winding end portion 7bb of the winding end side V-phase coil winding portion 17b4 is led out from the simulated slot s15. And as shown in FIG. 22, the 2nd winding unit 9b is taken out from the winding frame 30 similarly to the 1st winding unit 9a.

  Furthermore, the two first and second winding units 9a and 9b shown in FIGS. 23 and 24 are overlapped as shown in FIGS. 25 and 26 while substantially maintaining their shapes. For this reason, the two winding units 9a and 9b are provided with the winding start side coil winding portions 16a1, 16b1, 17a1, 17b1, and 18a1 of the two winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase. , 18b1 are combined so as to be located on the core side of a part of each winding end side coil winding portion 16a4, 16b4, 17a4, 17b4, 18a4, 18b4 of the two winding elements.

  Next, as shown in FIG. 27, the tooth portions 3b of the plurality of divided stator cores 3 constituting the stator core 5 are inserted from the outer peripheral side into the combined two winding units 9a and 9b, as shown in FIG. Thus, the core part 3a of the split stator core 3 is combined. Thus, the two winding units 9a and 9b are connected to the coil winding portions 16a1, 16b1, 17a1, 17b1, 18a1, 18b1, 16a4, 16b4, 17a4 on the winding start side and the winding end side of the winding elements of each phase. 17b4, 18a4, and 18b4 are accommodated in the slot groups 20a, 20b, and 20c for each phase and attached to the stator core 5 so as to share arbitrary slots 5c1 to 5c3 and 5c13 to 5c15. Further, the outer ring 4 is press-fitted into the outer periphery of the core portion 3a of the divided stator core 3 to complete the stator 1 as shown in FIGS.

  As described above, according to the stator 1 of the present embodiment, each of the three-phase windings 6, 7, and 8 is configured by the two winding elements 6 a, 6 b, 7 a, 7 b, 8 a, and 8 b. Each of the winding elements 6a, 6b, 7a, 7b, 8a, and 8b includes a slot group 20a for each phase constituted by eight slots in which each slot 5c is arranged with an electrical angle shifted by approximately 180 °. , 20b, 20c, two winding elements 6a, 6b, 7a, 7b, 8a, 8b, which are configured to be wound a predetermined number of times in series while reversing the winding direction of adjacent ones. And the four coil winding portions 16a1 to 16a4, 17a1 to 17a4, 18a1 to 18a4, 16b1 to 16b4, 17b1 to 17b4, and 18b1 to 18b4, and the two winding elements 6a and 6b. The coil winding portions 16a1, 16a4, 17a1, 17a4, 18a1, 18a4, 16b1, 16b4, 17b1, 17b4, 18b1, and 18b4 on both ends of 7a, 7b, 8a, and 8b have slots 5c1 to 5c3 and 5c13 to 5c15. Shared and housed. Thereby, the windings 6, 7, and 8 can be attached to the stator core 5 without changing the shape of the winding formed by the winding frame 30. Further, the winding start side coil winding portions 16a1, 16b1, 17a1 are configured by configuring the windings 6, 7, 8 of each phase in parallel by two winding elements 6a, 6b, 7a, 7b, 8a, 8b. 17b1, 18a1, 18b1 and winding end side coil winding portions 16a4, 16b4, 17a4, 17b4, 18a4, 18b4, even if the winding temperatures are different, there is no temperature difference near the remaining coil winding portions. The currents flowing in the slots 5c are the same, and torque fluctuations caused by the current difference between the slots 5c can be prevented and vibrations can be reduced. Further, since the windings 6, 7, and 8 of each phase are configured in parallel, the number of connection steps can be reduced. Furthermore, the windings 6, 7, and 8 of each phase have the same shape, and the coil end portions on the connecting wire side and the lead wire side of each phase do not become dense, and the connecting wire side and the lead wire side of each phase The area occupied by the coil end portion can be minimized, the length of the coil end portion can be minimized, and the phase resistance of each phase and the phase inductance of each phase can be made uniform. In addition, the windings 6, 7, 8 of each phase have the same shape, and the back electromotive force of each phase is the same. Fluctuations can be prevented and vibrations can be reduced.

  Further, according to the winding method of the stator 1 of the present embodiment, the step of preparing the winding frame 30 having the fifteen simulated slots 32 defined by the simulated teeth 32 imitating the teeth 3b, one by one. In the simulated slot group for each phase, which is composed of five simulated slots 32 for each phase in which the simulated slots 32 are arranged with an electrical angle shifted by approximately 180 °, the winding directions of those adjacent to each other are reversed. Each phase having four coil winding portions 16a1 to 16a4, 17a1 to 17a4, 18a1 to 18a4, 16b1 to 16b4, 17b1 to 17b4, and 18b1 to 18b4, which are configured by being wound a predetermined number of times in series. Winding elements 6a, 6b, 7a, 7b, 8a, 8b of the winding start side coil winding portions 16a1, 17a1, 18a1, 16b1, 17b1, 1 of each phase. b1 is superposed one by one, and the remaining coil winding portions 16a2 to 16a4, 17a2 to 17a4, 18a2 to 18a4, 16b2 to 16b4, 17b2 to 17b4, and 18b2 to 18b4 for each phase are also superposed one by one. However, a process of forming two winding units 9a, 9b in which the winding elements 6a, 6b, 7a, 7b, 8a, 8b of each phase are overlapped, and two winding units 9a removed from the winding frame 30 9b, coil winding portions 16a1, 16a4, 17a1, 17a4, 18a1, 18a4, 16b1, on the winding start side and winding end side of the two winding elements 6a, 6b, 7a, 7b, 8a, 8b of each phase 2 of each phase so that 16b4, 17b1, 17b4, 18b1, 18b4 share slots 5c1-5c3 and 5c13-5c15. The winding elements 6a, 6b, 7a, 7b, 8a, 8b are respectively accommodated in the slot groups 20a, 20b, 20c for each phase and attached to the stator core 1, thereby providing the same effects as described above. Can be played.

  Note that the slot group 20a, 20b, 20c for each phase has a single slot in which each slot is arranged with an electrical angle shifted by approximately 180 °. In addition to the above-described embodiment, there are a stator 1a in which the number of winding pole pairs shown in FIG. 29 is 2 (n = 2) and a stator 1b in which the number of winding pole pairs shown in FIG. 30 is 3 (n = 3). .

  That is, in the stator 1a shown in FIG. 29, the winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase are two, that is, the winding start side and winding end side coil winding portions 16a1, 16a2, and so on. 17a1, 17a2, 18a1, 18a2, 16b1, 16b2, 17b1, 17b2, 18b1, 18b2 respectively, and winding start of each winding element 6a, 6b, 7a, 7b, 8a, 8b wound in series a predetermined number of times The side and winding end side coil winding portions 16a1, 16a2, 17a1, 17a2, 18a1, 18a2, 16b1, 16b2, 17b1, 17b2, 18b1, and 18b2 have their winding directions reversed. Similarly to the first embodiment, the third phase (W phase) reverse winding is performed, and the winding start side coil winding portions 18a1 and 18b1 of the W phase winding start winding of the U phase and V phase windings. It differs from the winding direction of the side coil winding portions 16a1, 16b1, 17a1, 17b1.

  The coil winding portions 16a1, 16a2, 17a1, 17a2, 18a1, 18a2, 16b1, 16b2, 17b1, 17b2, 18b1, 18b2 on both ends of the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are The slots 5c1 to 5c3 and 5c7 to 5c9 are shared. Also in this embodiment, the stator 1a is a radial gap type motor, and since the number n of winding pole pairs is an even number, the winding start side coil winding portion 16a1 of one winding element 6a, 7a, 8a of each phase is provided. The winding directions of the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the other phases 17a1, 18a1 are different, and the two winding elements of each phase 6a, 6b, 7a, 7b, 8a, 8b are formed by different winding methods.

  Further, in the stator 1b shown in FIG. 30, the winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase are wound in series a predetermined number of times while reversing the winding directions of the adjacent ones. It has three coil winding parts 16a1 to 16a3, 17a1 to 17a3, and 18a1 to 18a3. The stator 1b is also a third phase (W phase) reverse winding, and the winding start side coil winding portions 18a1 and 18b1 of the W phase winding are winding start side coil winding portions of the U phase and V phase windings. It differs from the winding direction of 16a1, 16b1, 17a1, 17b1.

  The coil winding portions 16a1, 16a3, 17a1, 17a3, 18a1, 18a3, 16b1, 16b3, 17b1, 17b3, 18b1, 18b3 on the both ends of the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are The slots 5c1 to 5c3 and 5c10 to 5c12 are shared. On the other hand, in this embodiment, the stator 1b is a radial gap type motor and the number n of winding pole pairs is an odd number. Therefore, the winding start side coil winding portion of one winding element 6a, 7a, 8a of each phase 16a1, 17a1, 18a1 and the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the respective phases are formed in a state in which the winding directions are the same. The first and second winding units 9a and 9b may have the same configuration. Thereby, the current flowing directions of the winding elements 6a, 6b, 7a, 7b, 8a, and 8b of the respective phases accommodated in the shared slots 5c1 to 5c3 and 5c10 to 5c12 can be matched.

  In this case, at one end of the U phase at the winding ends 6ab, 6ba, 7ab, 7ba, 8ab, 8ba of the winding elements 6a, 6b, 7a, 7b, 8a, 8b of the respective phases connected to the neutral point side. The winding end 6ab of the other winding element 6a and the winding end 6ba of the other winding element 6b are led out sharing the slot 5c10, and the winding end 7ab of one of the V-phase winding elements 7a and The winding end 7ba of the other winding element 7b is led out sharing the slot 5c12, and the winding end 8ab of one W-phase winding element 8a is passed from the slot 5c8 to the winding of the other winding element 8b. The line end 8ba is led out from the slot 5c14.

Second Embodiment
31a (a) and 31b (a) show a state where the coil is wound around a stator having a double slot and a number of winding pole pairs of 4, according to the second embodiment of the present invention. FIG. 31a (b) and FIG. 31b (b) are side views of the stator as viewed from the direction A in FIGS. 31a (a) and 31b (a).

  That is, the stator 1c of this embodiment includes a stator core 5 having 6 × m × n (= 48) teeth 5b where m = 2 and n = 4, and a three-phase inserted in the slot 5c between the teeth 5b. Windings 6, 7, 8. The slot groups 20a, 20b, and 20c for each phase straddle the four slots for other phases, and each of the two slots 5c, that is, 16 double slots are arranged with an electrical angle shifted by approximately 180 °. Slot 5c.

  Each of the three-phase windings 6, 7, and 8 includes two winding elements 6 a, 6 b, 7 a, 7 b, 8 a, and 8 b. The two winding elements 6a, 6b, 7a, 7b, 8a, and 8b are concentric with the slot groups 20a, 20b, and 20c for each phase by a predetermined number of times in series while reversing the winding direction between adjacent ones. The four coil winding portions 16a1 to 16a4, 17a1 to 17a4, and 18a1 are the same in the two winding elements 6a, 6b, 7a, 7b, 8a, and 8b. -18a4, 16b1 to 16b4, 17b1 to 17b4, 18b1 to 18b4.

  Then, the winding start side coil winding portions 16a1, 17a1, 18a1 of each phase of one winding element 6a, 7a, 8a are superposed one by one, and the remaining coil winding portions 16a2 to 16a4 of each phase are superposed. 17a2-17a4, 18a2-18a4 are also overlapped one by one to form the first winding unit 9a, and the winding start side coil winding portions 16b1, 17b1, 18b1 of each phase of the other winding elements 6b, 7b, 8b Are stacked one by one, and the remaining coil winding portions 16b2 to 16b4, 17b2 to 17b4, and 18b2 to 18b4 of each phase are also stacked one by one to form the second winding unit 9b.

  The winding units 9a and 9b have two phases (U phase, V phase) in any direction (clockwise direction or clockwise direction) of the three-phase winding start side coil winding portions 16a1, 16b1, 17a1, 17b1, 18a1, and 18b1. The remaining one phase (W phase) is wound in a direction opposite to the arbitrary direction, and the remaining coil winding portions 16a2 to 16a4, 16b2 to 16b4, 17a2 to 17a4 are wound. , 17b2 to 17b4, 18a2 to 18a4, and 18b2 to 18b4 are also formed by third phase reverse rotation winding in which one phase (W phase) is reverse rotation winding.

  Further, the winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase are radial gap type motors and are the stator 1 having an even number of pole pairs. The winding start side coil winding portions 16a1, 17a1, 18a1 and the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the respective phases are made different. The two winding elements 6a, 6b, 7a, 7b, 8a, and 8b of each phase are formed in different winding methods.

  The coil winding portions 16a1, 16a4, 17a1, 17a4, 18a1, 18a4, 16b1, 16b4, 17b1, 17b4, 18b1, 18b4 on both ends of the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are respectively Arbitrary pairs of slots 5c1 to 5c3 and 5c13 to 5c15 of the phase slot groups 20a, 20b, and 20c are shared and accommodated.

  Further, the winding end portions 6aa and 6bb of the U-phase winding elements 6a and 6b are both derived from the pair of slots 5c1 and connected to the input side. On the other hand, the winding ends 6ab and 6ba of the U-phase winding elements 6a and 6b are led out from the pair of slots 5c10 and 5c16, respectively, and connected to the neutral point side.

  Winding ends 7aa and 7bb of the V-phase winding elements 7a and 7b are both derived from the pair of slots 5c3 and connected to the input side, while the winding ends 7ab and 7b of the V-phase winding elements 7a and 7b are connected. 7ba is respectively derived from the pair of slots 5c12 and 5c18 and connected to the neutral point side.

  Winding ends 8aa and 8bb of the W-phase winding elements 8a and 8b are respectively derived from the pair of slots 5c5 and 5c23 and connected to the input side, while the winding ends of the W-phase winding elements 8a and 8b are connected. 8ab and 8ba are both derived from the pair of slots 5c14 and connected to the neutral point side. The pair of slots 5c1, 5c3, 5c14 shared when the winding end portions 6aa, 6bb, 7aa, 7bb, 8ab, 8ba are derived are both from one of the pair of slots according to the winding method. It may be derived or may be derived separately from the two slots.

  The stator 1c of the present embodiment is the same as the coil winding portions 16a1 to 16a4, 17a1 to 17a4, 18a1 to 18a4, 16b1 to 16b4, 17b1 to 17b4, and 18b1 to 18b4, except that they are distributed in two layers. The winding method is the same as that of the first embodiment, and the winding method is performed using the winding frame as in the first embodiment. In this case, the reel has 3 × m × (n + 1) (= 30) simulated slots defined by simulated teeth simulating teeth. Then, each of the two slots is composed of m × (n + 1) (= 10) simulated slots for each phase in which the slots are arranged with a deviation of about 180 ° in electrical angle. Winding elements 6a and 6b of each phase having a predetermined number of coil winding portions, which are configured by concentrically distributing two layers concentrically in series with each other while inverting the winding direction between adjacent ones. , 7a, 7b, 8a, 8b are superposed on the winding start side coil winding portions 16a1, 17a1, 18a1, 16b1, 17b1, 18b1 of each phase one by one, and the remaining coil winding portions 16a2 of each phase. 16 a 4, 16 b 2 to 16 b 4, 17 a 2 to 17 a 4, 17 b 2 to 17 b 4, 18 a 2 to 18 a 4, 18 b 2 to 18 b 4 are arranged one by one, and the winding elements 6 a, 6 b and 7 a of each phase are arranged. , 7b, 8a, 8b are formed as two winding units 9a, 9b. Then, the two winding units 9a and 9b removed from the winding frame have m (= 2) coil winding portions on the winding start side and winding end side of the two winding elements of each phase. Are shared by each slot group 20a, 20b, 20c for each phase configured by 2 × m × n (= 16) slots arranged with an electrical angle shifted by approximately 180 °. Two winding elements 6 a, 6 b, 7 a, 7 b, 8 a, 8 b of the phase are accommodated in the slot groups 20 a, 20 b, 20 c for each phase and attached to the stator core 5.

  In addition, as in this embodiment, by using distributed winding in two layers, the magnetomotive force of the coil is closer to a sine wave than a concentrated winding that is a square wave, so the magnetic flux change is smooth, low loss, high An output motor can be provided.

  In addition to the concentric winding shown in FIGS. 31a and 31b, pitch winding like the stator 1d shown in FIGS. 32a and 32b is adopted as another winding method of the third phase reverse rotation winding of the present embodiment. May be. That is, in the concentric winding shown in FIG. 31a and FIG. 31b, among the adjacent pair of slots for each phase (four slots in total), in the slot on the side separated after winding in the adjacent slot. Is wound (or vice versa), but in the case of pitch winding, it is wound in a slot closer to the clockwise direction when viewed from the lead wire side and then wound in a counterclockwise slot. (Or vice versa).

  In addition to the embodiment in which the number of winding pole pairs is four, the stator is composed of double slots in which the slots for each phase are arranged with two slots shifted by approximately 180 ° in electrical angle. Thus, there are stators 1e and 1e 'in which the number of winding pole pairs shown in FIGS. 33a to 34b is 3 (n = 3).

On the other hand, in the modification shown in FIGS. 33a and 33b, the stator 1e is a radial gap type motor, and the number n of winding pole pairs is an odd number, so that one winding element 6a, 7a, 8a of each phase starts winding. The side coil winding portions 16a1, 17a1, 18a1 and the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the respective phases have the same winding direction. In other words, the first and second winding units 9a and 9b may have the same configuration.
The stator 1e shows a case where each coil winding portion is pitch-wound. However, even if the number of winding pole pairs is an odd number, concentric winding like the stator 1e 'shown in FIGS. 34a and 34b is performed. Can be adopted. Even in the case of concentric winding, the first and second winding units 9a and 9b can be formed in the same configuration.

<Third Embodiment>
FIGS. 35a (a) and 35b (a) show a state where the coil is wound around a stator having a triple slot and a number of winding pole pairs of 4, according to the third embodiment of the present invention. FIG. 35a (b) and FIG. 35b (b) are side views of the stator as seen from the direction A in FIG. 35a (a) and FIG. 35b (a).

  That is, the stator 1f of this embodiment includes a stator core 5 having 6 × m × n (= 72) teeth 5b where m = 3 and n = 4, and a three-phase inserted in the slot 5c between the teeth 5b. Windings 6, 7, 8. Each phase slot group 20a, 20b, 20c is composed of three slots 5c, that is, 24 slots 5c in which triple slots are arranged with an electrical angle of approximately 180 °.

  Therefore, the stator 1f of the present embodiment includes the coil winding portions 16a1 to 16a4, 17a1 to 17a4, 18a1 to 18a4, and 16b1 to the slot groups 20a, 20b, and 20c for each phase including the three slots 5c. 16b4, 17b1 to 17b4, 18b1 to 18b4 are the same as those of the first embodiment except that they are distributed in three layers, and are W-phase reverse rotation winding, pitch winding or concentric winding (in this embodiment, pitch winding) Winding).

  Further, the winding method of the present embodiment is also performed using a winding frame in the same manner as in the first and second embodiments. In this case, the reel has 3 × m × (n + 1) (= 45) simulated slots defined by simulated teeth simulating teeth. Then, each of the three simulated slots for each phase is composed of m × (n + 1) (= 15) simulated slots for each phase in which three slots are arranged with an electrical angle shifted by approximately 180 °. A winding element 6a for each phase having a predetermined number of coil winding portions, which is constituted by distributed winding in three layers with a pitch winding of a predetermined number of times in series while reversing the winding direction between adjacent ones, 6 b, 7 a, 7 b, 8 a, 8 b are overlapped one by one with the winding start side coil winding portions 16 a 1, 17 a 1, 18 a 1, 16 b 1, 17 b 1, 18 b 1 for each phase, and the remaining coil winding portions 16 a 2 for each phase. -16a4, 16b2 to 16b4, 17a2 to 17a4, 17b2 to 17b4, 18a2 to 18a4, 18b2 to 18b4, one by one, and winding elements 6a, 6b, Two winding units 9a and 9b in which 7a, 7b, 8a and 8b are overlapped are formed. Then, the two winding units 9a and 9b removed from the winding frame have m (= 3) slots each having two coil elements on the winding start side and winding end side of each winding element. Are shared by each slot group 20a, 20b, 20c for each phase configured by 2 × m × n (= 24) slots arranged with an electrical angle shifted by approximately 180 °. Two winding elements 6 a, 6 b, 7 a, 7 b, 8 a, 8 b of the phase are accommodated in the slot groups 20 a, 20 b, 20 c for each phase and attached to the stator core 5.

  Thereby, since the magnetomotive force of the coil is approximated by a sine wave by using distributed winding in three layers, the change in magnetic flux becomes smooth, and a motor with low loss and high output can be provided.

  In addition to the embodiment in which the number of pairs of winding poles is 4 in the stator constituted by triple slots in which the slots for each phase are arranged by shifting the three slots by approximately 180 ° in electrical angle. Thus, there is a stator 1g in which the number of winding pole pairs shown in FIGS. 36a and 36b is 3 (n = 3).

That is, in the modification shown in FIGS. 36a and 36b, the stator 1g is a radial gap type motor, and the number n of winding pole pairs is an odd number. Therefore, the winding start of one winding element 6a, 7a, 8a of each phase is started. The side coil winding portions 16a1, 17a1, 18a1 and the winding start side coil winding portions 16b1, 17b1, 18b1 of the other winding elements 6b, 7b, 8b of the respective phases have the same winding direction. In other words, the first and second winding units 9a and 9b may have the same configuration.
Moreover, although the stator 1g has shown the case where each coil winding part is wound by pitch, even if the number of winding pole pairs is an odd number, concentric winding can be employ | adopted.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably.

  In the above-described embodiment, the phase order of the three phases is U, W, and V. However, the order is not limited thereto, and may be a phase order such as V, U, and W.

  Furthermore, although the radial gap type brushless motor stator is taken as an example of the stator according to the present invention, the stator according to the present invention is not limited thereto. That is, the stator according to the present invention may be a stator of an axial gap type motor, and can be applied to a stator of any rotating electric machine as long as it includes a three-phase coil such as an induction motor or a synchronous motor. It is. Moreover, although the inner rotor type thing was shown as a stator of a radial gap type motor, it is applicable also to an outer rotor type thing.

  That is, in the stator 1h used in the axial gap type motor shown in FIG. 37, a stator core having a single slot and a number of winding pole pairs of 6 is formed by two winding elements 6a, 6b, 7a, 7b, 8a, 8b. Each of the three-phase windings is wound. The stator core 5 includes an annular core 5a and 6 × m × n pieces (in the present embodiment, m = 1 and n = 6) that protrude in the axial direction from one axial side surface of the core 5a. 36) teeth 5b, and 36 slots 5c are formed between the teeth 5b.

  In this case, the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are 2 × m × n (= 12) in which m (= 1) slots are arranged with an electrical angle shifted by approximately 180 °. 6) Each of the six coils formed by winding a predetermined number of times in series while reversing the winding direction of adjacent ones in the slot group for each phase constituted by the slots 5c It has winding parts 16a1-16a6, 17a1-17a6, 18a1-18a6, 16b1-16b6, 17b1-17b6, 18b1-18b6.

  The winding start side coil winding portions 16a1, 17a1, 18a1, 16b1, 17b1, and 18b1 of the two winding elements 6a, 6b, 7a, 7b, 8a, and 8b are two winding elements 6a, 6b, and 7a. , 7b, 8a, 8b are accommodated in an arbitrary slot so as to be positioned on the core side of the winding end side coil winding portions 16a6, 17a6, 18a6, 16b6, 17b6, 18b6.

  Further, the winding end portions 6aa, 7aa, 8aa provided in the winding start side coil winding portions 16a1, 17a1, 18a1 of the two winding elements 6a, 7a, 8a, and the other winding element 6b, Winding ends 6bb, 7bb, 8bb provided on the winding end side coil winding portions 16b6, 17b6, 18b6 of 7b, 8b are connected to the input side, and one of the winding elements 6a, 7a, 8a Winding end portions 6ab, 7ab, 8ab provided at the winding end side coil winding portions 16a6, 17a6, 18a6 and the winding start side coil winding portions 16b1, 17b1 of the other winding elements 6b, 7b, 8b , 18b1 are provided with winding ends 6ba, 7ba, 8ba connected to the neutral point side.

  Also in the axial gap type motor, when n is an even number, the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are wound on the winding start side of one winding element 6a, 7a, 8a. A predetermined number of coil winding portions are wound in a state in which the winding directions of the coil winding portion and the winding start side coil winding portion of the other winding element 6b, 7b, 8b are different. On the other hand, when n is an odd number, the two winding elements 6a, 6b, 7a, 7b, 8a, 8b are composed of the winding start side coil winding portion of one winding element 6a, 7a, 8a and the other winding element 6a, 7a, 8a. A predetermined number of coil winding portions are wound with the winding direction of the winding elements 6b, 7b, 8b being the same as that of the winding start side coil winding portion.

  In the case of an axial gap type motor, as in the case of a radial gap type motor, a step of preparing a winding frame having simulated teeth imitating teeth, a step of forming two winding units, and two winding units Attaching to the stator core, or forming the two winding units by directly winding two winding elements around the stator core made of a single member. Good. In this case, each winding start side coil winding portion of the two winding elements is shared and accommodated in an arbitrary slot so as to be positioned on the core side of each winding end side coil winding portion of the two winding elements. Therefore, each winding start side coil winding portion of the two winding elements is formed on the stator core at the same time so as to be formed before each winding end side coil winding portion of the two winding elements is wound. It is preferably wound.

  Specifically, the winding method in this case is a slot group for each phase constituted by 2 × m × n slots for each phase in which m slots are arranged with an electrical angle shifted by approximately 180 °. Winding start side coil winding portion of each phase configured by winding two winding elements for each phase a predetermined number of times in a predetermined slot arranged substantially point-symmetrically The step of superimposing one by one and the two winding elements for each phase are wound around the slot group for each phase by a predetermined number of times in series while reversing the winding direction between adjacent ones. Each of the remaining coil winding portions of each phase is superposed one by one, and the coil winding portion on the winding end side of each phase is wound on the winding start side coil winding portion on each phase. Share each slot of the slot group for each phase to be rotated, And a step winding element to form two winding units superimposed, the.

1, 1a, 1b, 1c, 1d, 1e, 1e ', 1f, 1g, 1h Stator 2 Rotor 3 Split stator core 3a Core part 3b Teeth part 4 Outer ring 5 Stator core 5a Core 5b Teeth 5c Slot 6, 7, 8 Winding 6a, 6b U-phase winding element 7a, 7b V-phase winding element 8a, 8b W-phase winding element 6aa, 6ab, 6ba, 6bb, 7aa, 7ab, 7ba, 7bb, 8aa, 8ab, 8ba, 8bb Part 9a, 9b Winding unit 16a1-16a6, 16b1-16b6, 17a1-17a6, 17b1-17b6, 18a1-18a6, 18b1-18b6 Coil winding part 30 Winding frame 32 Simulated teeth s1-s15 Simulated slot

Claims (15)

In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase ,
The stator core includes an annular core and 6 × m × n teeth protruding radially from the inner peripheral surface of the core toward the radially inner side, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements the end stator, wherein Rukoto is connected to the neutral point side. In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes a ring-shaped core and 6 × m × n teeth that project radially from the inner peripheral surface of the core toward the radially inner side, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side, and the stator. In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes an annular core and 6 × m × n teeth that are provided so as to protrude in the axial direction from one axial side surface of the core, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side, and the stator. In a stator having a stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and three-phase windings inserted into slots between the teeth,
Each of the three-phase windings is composed of two winding elements,
The two winding elements are adjacent to each other in a slot group for each phase composed of 2 × m × n slots in which m slots are arranged with an electrical angle shifted by approximately 180 °. Having the predetermined number of coil winding portions, which is the same number in the two winding elements, configured by being wound a predetermined number of times in series while reversing the winding direction of
The coil winding portions on both ends of the two winding elements are accommodated by sharing any slot of the slot group for each phase,
The stator core includes an annular core and 6 × m × n teeth that project from the one axial side surface of the core in the axial direction, with n being an odd number.
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. Wind the coil winding part,
Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The end portion is connected to the neutral point side, and the stator. Each of the three-phase winding elements is formed by superimposing one winding start side coil winding part of each phase one by one, and superimposing the remaining coil winding parts of each phase one by one. Each of the winding units is composed of
Of the winding start side coil winding portion of the three-phase winding, the winding start side coil winding portion of the one-phase winding sandwiched between the other two phases is the winding start of the other two-phase winding The stator according to any one of claims 1 to 4, wherein the stator is different from a winding direction of the side coil winding portion. A stator core having 6 × m × n (m: integer, n: number of winding pole pairs) teeth, and a three-phase winding consisting of a first phase, a second phase, and a third phase are slots between the teeth. In the stator winding method, inserted into
Preparing a reel having 3 × m × (n + 1) simulated slots defined by simulated teeth imitating the teeth;
A mock slot group composed of m × (n + 1) mock slots for each phase in which m mock slots are arranged with an electrical angle shifted by approximately 180 ° between the adjacent ones. The winding element of each phase having a predetermined number of coil winding portions, which is configured by winding a predetermined number of times in series while reversing the winding direction, the winding start side coil winding portion of each phase Forming two winding units in which the winding elements of each phase are superposed while superposing one by one and arranging the remaining coil winding portions of each phase one by one,
The two winding units removed from the winding frame are divided into coil winding portions on the winding start side and winding end side of the two winding elements of each phase, and m slots each having an electrical angle of approximately 180. The two winding elements of each phase share the slots for each phase so that they share an arbitrary slot of the slot group for each phase constituted by 2 × m × n slots arranged at an offset A process of being accommodated in each group and attached to the stator core;
A stator winding method characterized by comprising: Of the winding start side coil winding portion of the three-phase winding, the winding start side coil winding portion of the one-phase winding sandwiched between the other two phases is the winding start of the other two-phase winding The stator winding method according to claim 6 , wherein the winding method is different from a winding direction of the side coil winding portion. The winding frame has the simulated teeth and the simulated slots having substantially the same shape as the teeth and slots of the stator,
7. The two winding units detached from the winding frame are respectively accommodated in the slot groups for each phase and attached to the stator core while substantially maintaining the shape thereof. winding method of the stator according to or 7. In the two winding units removed from the winding frame, a part of each winding start side coil winding portion of the two winding elements of each phase is arranged so that each winding end side coil of the two winding elements Combined so as to be located on the outer peripheral side of a part of the winding part,
For the combined two winding units, a plurality of split stator core teeth that constitute the stator core are inserted from the outer peripheral side, and the core portions of the split stator core are joined together,
The stator winding method according to claim 8 , wherein an outer peripheral ring is press-fitted into an outer periphery of a core portion of the divided stator core. The stator core includes an annular core and 6 × m × n teeth protruding radially from the inner peripheral surface of the core toward the radially inner side, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. The winding method of the stator according to any one of claims 6 to 9 , wherein the coil winding portion is wound. The stator core includes a ring-shaped core and 6 × m × n teeth that project radially from the inner peripheral surface of the core toward the radially inner side, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. The winding method of the stator according to any one of claims 6 to 9 , wherein the coil winding portion is wound. Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements the end winding method of a stator according to claim 10 or 11, characterized in that it is connected to the neutral point side. The stator core includes an annular core, and 6 × m × n teeth protruding in the axial direction from one axial side surface of the core, where n is an even number,
The two winding elements are in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are different from each other in a predetermined number. The stator winding method according to any one of claims 6 to 8 , wherein the coil winding portion is wound. The stator core includes an annular core and 6 × m × n teeth protruding from an axial side surface of the core in the axial direction, where n is an odd number,
The two winding elements have a predetermined number of windings in a state in which the winding directions of the winding start side coil winding portion of one winding element and the winding start side coil winding portion of the other winding element are the same. The stator winding method according to any one of claims 6 to 8 , wherein the coil winding portion is wound. Each winding start side coil winding part of the two winding elements shares and accommodates the arbitrary slot so as to be positioned on the core side of each winding end side coil winding part of the two winding elements. Has been
Winding ends provided at one winding start side coil winding portion of one of the two winding elements, and windings provided at the other winding end side coil winding portion of the other two winding elements The end is connected to the input side,
Winding end portions provided at one winding end side coil winding portion of one of the two winding elements, and windings provided at the other winding start side coil winding portion of the other of the two winding elements The stator winding method according to claim 13 or 14 , wherein the end portion is connected to a neutral point side.

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