JP3485199B2 - Stator winding method for multi-phase rotating machine - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stator winding method for a multi-phase rotating machine in which coils of respective phases are inserted into slots of a stator core by wave winding. 2. Description of the Related Art Conventionally, as a stator winding method for a three-phase rotating machine, as shown in FIG. The coil 10 of each phase is continuously inserted by the number of turns (for example, three turns).
There is known a method of forming a stator winding by molding them into 2, 103, 104. In the prior art, the coils 102, 103, 104 of the respective phases are successively provided for a predetermined number of turns in the slots 101 of the stator core 100 for each phase.
6B, when the second-phase coil 103 is inserted as shown in FIG. 6B, the coil end 102a of the first-phase coil 102 already inserted covers the slot 101 and is inserted. Hinder the first phase coil end 10
The molding amount of the intermediate molding for bringing the 2a into the posture as shown in FIG. 6B is also large. [0006] Further, as shown in FIG. 6 (C), when inserting the coil 104 of the third phase, the coil end 103 a of the coil 103 of the second phase already inserted covers the slot 101 so that the slot Hinders the second phase coil 103 end b
6C, the amount of intermediate molding is increased. Therefore, slot 1 of stator core 100
01 has a problem that the load when inserting the coils 102, 103, 104 of each phase in a wave winding is large, and the workability is not good. The coil ends 102a, 103 of each phase
due to the positional relationship between the slot 101a and the slot 104a.
In this case, the arrangement positions of the coils 102, 103, and 104 for each phase are different. As a result, there is a problem that the inductance is affected and the value varies among the phases. SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and an object of the present invention is to insert a coil of each phase into a slot of a stator core by wave winding. The present invention aims to provide a stator winding method for a multi-phase rotating machine, which can reduce the burden on the user and improve the workability. [0007] In order to solve the above-mentioned problems, the present invention provides a stator winding method for a multi-phase rotating machine in which coils of each phase are inserted into slots of a stator core in a wave winding . the conductors constituting the coils of the phases to form a minute beam coil divided into each plurality, the corresponding phases of 1 tum minute bundle coils sequentially scan
Insert the second bundle coil of each phase into each lot
In order so as to be parallel to the first coil
And insert the third bundle coil of each phase
Up to the last split coil of a phase,
Turn the shunt coils of each phase in order so that they are parallel to the shunt coils.
It is characterized in that it is inserted into a slot corresponding to the turn and molded. The split coils are inserted into the corresponding slots in parallel with each phase, so that each time the coil ends are inserted, the coil ends of the respective phases cover adjacent slots into which coils of the other phase are inserted. And the amount of molding at each coil end is small, and the height of the coil end protruding from the slot can be low. Embodiments of the present invention will be described below with reference to the accompanying drawings. Here, FIG. 1 is a perspective view of a coil end by a stator winding method of the multi-phase rotating machine according to the present invention, FIG. 2 is a plan view thereof, and FIG.
(A) is a perspective view of the coil end, (B) is a plan view showing the formed amount of the coil end, (C) is a side view showing the projected height of the coil end and the formed amount, and FIG. FIG. 5 is an exploded connection diagram of the windings showing the beginning of the first turn and the end of the third turn. As shown in FIGS. 1 and 2, a stator 1 of a three-phase rotating machine is provided with three-phase armature winding coils 4, 5, and 6 in a slot 3 of a stator core 2. Each of the coils 4, 5, and 6 of each phase is formed by three turns. The first-phase coil 4 comprises a first-turn coil 4a, a second-turn coil 4b, and a third-turn coil 4c, which are divided into substantially equal three bundles. Similarly, the second phase coil 5
The third phase coil 6 also includes a first coil 5a, a second coil 5b, and a third coil 5c. The third phase coil 6 also includes a first coil 6a, a second coil 6b, and a third coil. Coil 6c
Consists of [0012] The stator winding method of the three-phase rotating machine is shown in FIG.
4A, the first coil 4a of the first phase coil 4 is inserted into the corresponding slot 3 of the stator core 2. As shown in FIG. Next, as shown in FIGS. 3B and 3C, the coil ends of the first coil 4a are in the second phase and the third phase.
The coil end of the coil 4a is formed so as not to cover the slot 3 into which the phase coils 5 and 6 are inserted. Here, L indicates the forming amount, and H indicates the projecting height of the coil end, but since the first-phase coil 4 is divided into three bundles, both the forming amount L and the projecting height H of the coil end can be reduced. . Next, the first coil 5a of the second phase coil 5 is inserted into the corresponding slot 3 as shown in FIG.
The coil end of the coil 5a is formed so as not to hinder the a. Further, as shown in FIG. 4C, the first coil 6a of the third phase coil 6 is inserted into the corresponding slot 3 so as not to hinder the coil 4b to be inserted next. The coil end of the coil 6a is formed. Similarly, as shown in FIGS. 4D and 4E, the second coil 4b of the first phase coil 4 and the second coil 5b of the second phase coil 5 as shown in FIGS. Are inserted into the corresponding slots 3, and the respective coil ends are formed so as not to hinder the coils 5b and 6b to be inserted next. In the same manner, the shunt coils of each phase are set in order (6
b → 4c → 5c → 6c). Finally, the third coil 6c of the third phase coil 6 is inserted into the slot 3 to form a coil end, and the winding operation is completed as shown in FIGS. I do. The development connection diagram of the stator winding of the three-phase rotating machine is as follows.
As shown in FIG. Here, the number of the slots 3 of the stator core 2 is 54. The numbers (1 to 162) shown in the circles indicate the order of insertion of the coils into the corresponding slots 3 by the three-phase parallel insertion method, and indicate the serial numbers of the coil sides inserted into the slots 3. It is also a thing. That is, since three windings are performed with 54 slots 3,
54 × 3 = 162. In both manual insertion and mechanical insertion, for example, if the split coils 4a, 5a, 6a... Of each phase are inserted into the corresponding three slots 3 at the same time, the number of insertions is 54. Thus, the number of insertion steps and the insertion time can be reduced. The numbers indicating the order of insertion into the slot 3 are 1 to 54. As described above, according to the present invention, each
Insert the first winding coil of the phase into the corresponding slot in order.
And the second shunt coil of each phase is
Slots corresponding to the coils in order so that they are parallel
At the end of each phase from the third shunt coil of each phase.
Split coils already inserted for each phase up to the split coil
The shunt coils of each phase correspond in order so that
Since molding is inserted into that slot, by end of each phase coil is the coil end portion is a high-density and compact densely together, the length of each phase of the coil end is shortened, reducing the conductive material This contributes to cost reduction, reduction in winding resistance, improvement in rotating machine performance, and reduction in size and weight of the rotating machine. Also, the arrangement position of each partial bundle coils in the slot is averaged, the inductance of the variation width of each phase is reduced. Further, since the split coils of each phase are inserted in parallel into the slots, and the length of the coil ends of each phase is shortened, the amount of molding of the coil ends is reduced. And workability can be improved.
Furthermore, if coils of each phase are inserted simultaneously in parallel, productivity can be improved by reducing the number of insertion steps and the insertion time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a coil end according to a stator winding method of a polyphase rotating machine according to the present invention. FIG. 2 is a perspective view of a coil winding method according to the present invention. FIG. 3 shows a state of insertion and molding of a first phase by a stator winding method of a multi-phase rotating machine according to the present invention; Plan view showing the molding amount of the end,
FIG. 4 (C) is a side view showing the projecting height of the coil end and the amount of molding. FIG. 4 is an explanatory view showing the order of inserting the split coils into the corresponding slots by the stator winding method of the polyphase rotating machine according to the present invention. FIG. 5 is an exploded connection diagram of a winding showing a starting part of a first winding and an ending part of a third winding by a stator winding method of a multi-phase rotating machine according to the present invention. Machine stator winding method,
(A) is a perspective view of a coil end after completion of winding, (B) is a perspective view of a second phase after insertion of a first phase, and (C) is 1,
Perspective view at the time of insertion of the third phase after insertion molding of the second phase [Explanation of reference numerals] 1 ... stator, 2 ... stator core, 3 ... slot, 4 ... first phase coil, 4a ... 1 phase 1 turn Eye coil, 4b ... 1 phase 2
Coil of the winding, 4c: coil of the first phase and third winding, 5 ... coil of the second phase, 5a ... coil of the first winding of the second phase, 5b ... coil of the second winding of the second phase, 5c ... third winding of the second phase , The 3rd phase coil, 6a ... the 3rd phase first coil, 6b ... the 3rd phase 2nd coil, 6c ... the 3rd phase 3rd coil.

Continuation of the front page (56) References JP-A-62-18952 (JP, A) JP-A-63-299754 (JP, A) JP-A-63-294242 (JP, A) Japanese Patent Publication No. 9-4801 (JP) , B1) (58) Field surveyed (Int. Cl. ⁷ , DB name) H02K 3/28

Claims (1)

(57) 11. Claims: 1. A stator winding method of the multiphase rotary machine to be inserted into a slot of the stator core of each phase coil in wave-wound, constituting the front Symbol coils of each phase The divided coils are divided into a plurality of pieces to form a bundle coil, and the first coil bundle of each phase is sequentially assigned to the slot corresponding to the slot.
And the second bundle coil of each phase is connected to the first winding of each phase.
The slots corresponding to the bundle coils in order so as to be parallel
To the last split coil of each phase from the third split coil of each phase.
Up to the bundle coil already inserted for each phase.
So that the shunt coils of each phase
A stator winding method for a multi-phase rotating machine, wherein the stator winding is formed by inserting into a slot.