JP2003264968A - Salient-pole rotor and method and apparatus for winding the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for winding in which quality of salient-pole rotor where an enamel round wire is series-wound is stabilized, and to provide a smaller salient-pole rotor for good workability in production. <P>SOLUTION: A winding apparatus is provided for salient-pole rotor in which an enamel round wire is series-wound around the salient-pole of a rotor core. It comprises a tension variable apparatus which changes the tension of enamel round wire during winding, and a tension control apparatus which controls the tension variable apparatus. So stress applied to an enamel coat from a nozzle that delivers the enamel round wire is reduced for stable quality. Since a plurality of enamel round wires are series-wound simultaneously, a smaller salient-pole rotor of high workability in manufacturing is presented. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a salient-pole rotor winding device for directly winding an enamel round wire on a salient-pole rotor of a synchronous generator, a winding method thereof, and a salient-pole rotor.

[0002]

2. Description of the Related Art Generally, as a conventional example in which an enameled round wire is wound directly on a salient pole portion of a rotor core of a synchronous generator in an aligned manner, for example, Japanese Patent Laid-Open Nos. 61-4443 and 51-77802 are available.
Nozzle type winding machine described in No. etc. is mentioned, but the basic configuration of these winding machines is that the nozzle that moves around the magnetic pole while feeding out the enamel round wire, the mount that supports this nozzle, and the move this mount. It is composed of a control device and an enamel round wire supply device. In this case, the supply device for the enamel round wire is set to a tension determined by the size of the enamel round wire used before the winding work.

Further, the winding method is set to a predetermined tension determined by the wire size of the enamel round wire, and while the single enamel round wire is fed, the nozzle is wound around the magnetic poles in an aligned winding. Winding work is thereby performed. The nozzle shape at that time has a circular or elliptical opening, and its inner wall is tapered to make it difficult to scratch the round enamel wire.

A conventional nozzle having a circular opening and a conventional nozzle having an elliptical opening will be described with reference to FIGS. 8 and 9. FIG. 8 shows a conventional nozzle 3A having a circular opening.
FIG. 4 is a front view of FIG. 1, the opening of which is circular and spreads in a tapered shape. 9 shows a conventional nozzle 3B having an elliptical opening. FIG. 9 (a) is a front view of the nozzle with a narrow width, and FIG. 9 (b) shows a wide opening. It is the front view seen from the direction. The inner wall of the elliptical opening is widened in a taper shape, and the wider the inner wall, the larger the inner diameter of the inner wall. When the distance between adjacent magnetic fields is narrow, and the line size of the enamel round wire is generally φ1.5 mm or more and high tension is required, an elliptical nozzle is used rather than a circular nozzle. To be

Next, the operation of the nozzle and the salient pole type rotor in which the conventional enameled round wire is directly wound in an aligned manner are shown in FIG.
And FIG. 11 will be described. FIG. 10 shows a conventional salient pole type rotor core. FIG. 10A is a sectional view thereof and FIG. 10B is a side view of its salient pole portion. The rotor iron core is provided with an integrally formed iron core 11 and grooved aligned winding jigs 13 at both ends thereof. As shown in the figure, the rotor is formed by winding a single round enamel wire 2 from the nozzle 3 around the rotor core and winding it a predetermined number of times.

FIG. 11 is a diagram for explaining the operation of the nozzle. The nozzle 3 advances in parallel with the salient pole portion 1 of the iron core in the direction of the arrow while feeding out the enamel round wire 2, whereby the salient pole portion 1 is formed. Winding is performed.

Next, a winding device using a conventional nozzle will be described. In the winding device using a conventional nozzle,
There is no mechanism that can directly wind multiple enameled round wires on a salient-pole rotor in a straight line at the same time. In addition, since the enamel round wire is commercially available only as a standard product up to φ3.2 mm, only single winding can be performed using the enamel round wire with φ3.2 mm or less. Therefore, the larger the generator, the more the enamel round wire must be wound, and the more winding it tends to cause the field voltage to become too high.
The field voltage had to be selected within an appropriate range in view of the withstand voltage characteristics of other electric parts such as a rectifying element.

Therefore, in the conventional method, for example, 500 k
In generators of VA or higher, the connection method between the poles was adjusted by connecting in parallel. However, in this method, the degree of freedom in the electrical design of the rotating machine is reduced as described below.

For example, FIG. 12 shows a method of connecting rotor coils in the case of 10 poles. In the figure, (a) is a series connection diagram of 10 series of the rotor coil, (b) in the figure.
Is a connection diagram of two parallel 5 series of the rotor coils, and FIG. 7C is a connection diagram of two parallel 5 series of the rotor coils. In this example, only these three connections are possible. Reference numeral 14 is a coil for one pole.

By the way, since the number of coils wound per pole increases as the size of the generator increases, in the case of the conventional single winding, the commercially available enamel round wire has a diameter of 3.2 mm or less and the allowable field. Since it is necessary to use a magnetic voltage, the 2-parallel 5-series connection of FIG. 12B or the 5-parallel 2-series connection of FIG. 12C has been adopted.

[0011]

However, when the enamel round wire having a diameter of 1.5 mm or more is wound by using the nozzle having the elliptical opening, the winding between the adjacent poles is wound by the above winding device for the salient pole rotor. In the straight part, the enamel round wire is fed from the one with the larger inner diameter of the inner wall of the nozzle, so there is little effect on the enamel coating of the enamel round wire, but at the winding corner, it is fed from the smaller inner wall inner diameter. , The enamel coating of the enamel round wire could be scratched.

The present invention (corresponding to claims 1 to 3) is
The present invention has been made in view of the above circumstances, and an object thereof is to provide a winding device and a winding method for stabilizing the quality of a salient pole rotor formed by directly winding enamel round wires in an aligned manner. is there.

By the way, in the conventional winding device using the nozzle, there is no mechanism in which a plurality of enamel round wires can be directly wound on the salient pole type rotor in an aligned manner at the same time. In addition, since the enamel round wire is commercially available only up to φ3.2 mm, only single winding can be performed using the enamel round wire having a diameter of 3.2 mm or less. Therefore, the larger the generator, the less freedom there is in the electrical design of the rotating machine, and therefore the optimum design cannot be achieved, leading to an increase in the size of the rotating machine. Also, in the nozzle shape, when winding a thick enamel round wire that has a small gap between adjacent magnetic poles and requires a large tension, the nozzle itself has both walls and a size for maintaining a predetermined strength. Since it is necessary, the nozzle itself may be upsized, and the enamel round wire may be damaged when passing through the narrowest portion of the salient pole portion on the base side. In addition, it is difficult to improve the work efficiency because the conventional technique can perform only the single winding.

The present invention (corresponding to claims 4 to 6) is
It was made in order to deal with the above situation, and its problem is to provide a salient-pole rotor that is excellent in miniaturization and has good manufacturing work efficiency. Another object of the present invention is to provide a winding device for stabilizing the quality of the salient pole rotor.

[0015]

In order to achieve the above-mentioned object, the invention according to claim 1 is a salient pole type rotation equipped with a nozzle for directly winding an enameled round wire in alignment with a salient pole portion of a rotor core. The winding device for a child is characterized by including a tension varying device for varying the tension of the enamel round wire in the winding and a tension control device controlling the tension varying device.

According to the first aspect of the present invention, the tension can be adjusted to be suitable when the inner diameter of the inner wall of the nozzle is paid out from the smaller one in the winding corner portion, and the stress applied to the enamel coating can be reduced. Since this is possible, the enamel round wire can be directly wound in an array on the salient pole portion of the iron core without damaging the enamel coating.

According to a second aspect of the present invention, there is provided a salient pole rotor winding method in which an enamel round wire fed from a nozzle is directly wound around a salient pole portion of a rotor iron core in an aligned manner, wherein the nozzle has the salient pole portion. It is characterized in that the tension of the round enamel wire wound around the nozzle is wound around the salient pole portion to be weaker than a predetermined tension only when the winding corner portion is wound.

According to the second aspect of the present invention, the stress applied to the enamel coating is reduced by reducing the tension of the enamel round wire when the inner diameter of the inner wall of the nozzle is paid out from the smaller one at the winding corner. Therefore, the enamel round wire can be directly wound in an array on the salient pole portion of the iron core without damaging the enamel coating.

According to a third aspect of the present invention, in the winding method for the salient pole rotor according to the second aspect, the salient pole portion is rotated around the enamel while being inclined forward with respect to the traveling direction of the nozzle. It is characterized by winding a round wire directly.

According to the third aspect of the invention, the angle at which the enamel round wire is fed out from the nozzle becomes gentler,
Since it is possible to reduce the stress applied to the enamel film more, without damaging the enamel film,
Enameled round wires can be directly wound in an array on the salient poles of the iron core.

According to a fourth aspect of the present invention, there is provided a salient pole type rotor winding device in which an enameled round wire fed from a nozzle is directly wound around a salient pole portion of a rotor iron core in an aligned manner. The U-shaped opening is used for feeding out, and the depth of the U-shape is ((number of wound enamel round wires) x (outer diameter of enamel round wire)-(half outer diameter of enamel round wire)) As described above, it is characterized in that the inner wall is expanded in a tapered shape.

According to the fourth aspect of the invention, a plurality of enamel round wires can be directly wound in an array at the same time.

According to a fifth aspect of the present invention, there is provided a salient-pole rotor winding device in which an enameled round wire fed from a nozzle is directly wound in an array on a salient pole portion of a rotor iron core. The L-shaped opening is the length of the L-shaped side, and the length of the L-shaped side is ((number of enamel round wires) x (outer diameter of enamel round wire)-(half of the outer diameter of the enamel round wire). )) As described above, it is characterized in that the inner wall is expanded in a tapered shape.

According to the invention of claim 5, a plurality of enameled round wires can be directly wound in an array at the same time, and even if the gap between adjacent magnetic poles is narrow, the salient pole portion is the narrowest on the base side. The parts can be easily passed.

According to a sixth aspect of the present invention, in a salient pole type rotor in which an enamel round wire is directly wound in an array on the salient pole portion of a rotor iron core, the enamel round wire is simultaneously provided on one salient pole portion. It is characterized in that it is provided with a winding having two or more turns.

According to the sixth aspect of the invention, the degree of freedom in the electrical design of the salient pole rotor, such as the selection of the size of the enamel round wire and the connection thereof, is increased, and the optimum design can be achieved. Further, also in manufacturing, since a plurality of enamel round wires are directly wound at the same time, work efficiency can be improved by shortening the winding time.

[0027]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic view of a salient-pole rotor winding device that is a first embodiment (corresponding to claim 1) of the present invention. As shown in the drawing, the winding device for the salient pole type rotor of the present embodiment applies tension to the nozzle 3 and the enamel round wire 2 which move while feeding the enamel round wire 2 around the salient pole portion 1 of the iron core. Tension varying device 4, tension controlling device 5 that variably controls tension varying device 4 in the winding, and pedestal 6 that supports nozzle 3.
And a control device 7 for controlling the gantry 6 and a supply device 8 for supplying the enamel round wire 2.

The nozzle 3 has an elliptical opening for letting out the enamel round wire 2 and has a tapered inner wall. The inner diameter of the inner wall is larger when the elliptical shape has a wider width.
Although the figure shows that the tension varying device 4 varies the tension by moving the positions of three points, a tension varying device such as a powder brake can be used.

Next, the operation of this embodiment will be described. The winding is provided with a predetermined tension for each position on the enamel round wire 2 supplied from the enamel round wire supply device 8 by the tension varying device 4, and the nozzle 3 feeds the enamel round wire 2 while the salient pole of the iron core. Move around the part 1 and perform straight winding for alignment. At this time, necessary tensions are set in advance in the tension control device 5 for each position around the salient pole portion 1 of the iron core.

According to the present embodiment, it is possible to adjust the tension to be suitable when the enamel round wire 2 is paid out from the smaller inner diameter of the inner wall of the nozzle 3 at the winding corner portion, and the stress applied to the enamel coating is reduced. Since the enamel round wire 2 can be directly wound on the salient pole portion 1 of the iron core in an aligned manner without damaging the enamel film, the salient pole rotor formed by directly winding the enamel round wire in an aligned manner. It is possible to provide a winding device for stabilizing the quality of the wire.

FIG. 2 is a schematic diagram for explaining a winding method for a salient pole rotor according to a second embodiment (corresponding to claim 2) of the present invention. As shown in the figure, in the salient pole type rotor winding method of the present embodiment, the nozzle 3 is moving while feeding the enamel round wire 2 around the salient pole portion 1 of the iron core. Then, when the position of the nozzle 3 is at the position of A → B → C shown in the figure (winding corner portion), the tension is made weaker than a predetermined tension, and the enamel round wire 2 is directly wound in alignment with the salient pole portion of the iron core. The tension at that time is preferably 30 to 70% of the predetermined tension.

Next, the operation of this embodiment will be described. Since the enamel round wire 2 is wound with a tension suitable for being paid out from the smaller inner diameter of the inner wall of the nozzle 3, stress applied to the enamel coating is reduced, It can be done without damaging the enamel coating.

According to the present embodiment, since the enamel coating can be directly wound in a straight line without damaging the enamel coating, the quality of the salient pole type rotor in which the enamel round wire 2 is directly wound in a straight line is stabilized. A winding method for achieving the above can be provided.

FIG. 3 is a schematic view for explaining a modified example of the winding method of the salient pole rotor according to the second embodiment (corresponding to claim 2) of the present invention. As shown in the figure, in the salient pole type rotor winding method of the present embodiment, the nozzle 3 is moving while feeding the enamel round wire 2 around the salient pole portion 1 of the iron core. Then, when the position of the nozzle 3 is from the position D to the position E (winding corner portion) shown in the drawing, the tension is made weaker than a predetermined tension, and the enamel round wire 2 is directly wound in alignment with the salient pole portion of the iron core. The tension at that time is preferably 30 to 70% of the predetermined tension.

In this embodiment, as in the second embodiment of FIG. 2, since the enamel coating can be directly wound in a straight line without damaging the enamel coating, the enamel round wire 2 is directly wound in a straight line in an aligned manner. A winding method for stabilizing the quality of a shaped rotor can be provided.

FIG. 4 is a schematic diagram for explaining a winding method for a salient pole rotor according to a third embodiment (corresponding to claim 3) of the present invention. As shown in the figure, in the salient pole rotor winding method of the present embodiment, the nozzle 3 is inclined forward with respect to the traveling direction while feeding the enamel round wire 2 around the salient pole portion 1 of the iron core. It is running at.

Next, the operation of this embodiment will be described. Since the enamel round wire 2 is paid out with a diameter larger than the inner diameter of the inner wall of the nozzle 3, the stress applied to the enamel coating is reduced and the enamel coating is damaged. You can do without it.

According to this embodiment, since the enamel coating can be directly wound in an aligned manner without damaging the enamel coating, the quality of the salient pole type rotor in which the enamel round wire 2 is directly wound in an aligned manner is stabilized. A winding method for achieving the above can be provided.

FIG. 5 shows a U-shaped nozzle of a winding device according to a fourth embodiment of the present invention (corresponding to claim 4).
Is an external view thereof, and FIG. 3B is a front view thereof. As shown in the figure, the U-shaped nozzle 9 according to the present embodiment has a U-shaped opening for feeding the enamel round wire 2.
The depth is more than ((number of enamel round wire to be wound) x (outer diameter of enamel round wire)-(half of outer diameter of enamel round wire)), and its inner wall is configured to expand in a taper shape. There is. In the figure, the two enamel round wires 2 are shown extending from the opening of the U-shaped nozzle 9 side by side. According to this embodiment, it is possible to provide a winding machine capable of directly winding a plurality of enamel round wires 2 in an aligned manner at the same time.

FIG. 6 shows an L-shaped nozzle of a winding device according to a fifth embodiment (corresponding to claim 5) of the present invention.
Is an external view thereof, and FIG. 3B is a front view thereof. As shown in the figure, the L-shaped nozzle 10 according to the present embodiment has an L-shaped opening for feeding the enamel round wire 2, and the depth thereof is ((the number of enamel round wires to be wound) ×
(Outer diameter of enamel round wire)-(Half of outer diameter of enamel round wire)) The inner wall is configured to spread in a taper shape.

In the figure, a plurality of enamel round wires 2 are arranged from the opening of the L-shaped nozzle 10 with the long side of the L-shaped nozzle 10 facing the salient pole portion 1 of the iron core for winding. It is delivered in the state. Since the force acts on the long side of the L-shaped nozzle 10 for the plurality of enamel round wires 2, the enamel round wires 2
Does not collapse.

According to this embodiment, a plurality of enamel round wires 2 can be directly wound in an array at the same time, and even if the gap between adjacent magnetic poles is small, the narrowest portion of the salient pole portion on the base side is formed. A winding machine that can be easily passed can be provided.

FIG. 7 is a sixth embodiment of the present invention (corresponding to claim 6) showing a salient pole rotor when two enamel round wires are directly wound in an aligned manner at the same time. FIG. 3A is a sectional view thereof, and FIG. 3B is a side view thereof.

As shown in the figure, in this embodiment, an insulator 12 is attached to an integrally formed iron core 11, and two enamel round wires 2 are simultaneously wound from above. Alignment winding jig 1 in which a groove required for the predetermined enamel round wire 2 in the first stage is provided at the end of the integrally formed iron core 11
3 is attached. Of course, the number of grooves of the aligned winding jig 13 is a multiple of 2 when the two enamel round wires 2 are wound. The rotor core has four poles and six poles.
Pole, 8 poles, 10 poles, enamel round wire is φ1.5mm ~ φ
3.2 mm, outer diameter of rotor core is φ300 mm to φ10
The length is 00 mm and the length is 300 mm to 700 mm.

According to the present embodiment, the degree of freedom in electrical design such as the selection and connection of the enamel round wire 2 is increased, the optimum design can be achieved, and the salient pole rotor excellent in miniaturization is provided. can do. Further, also in manufacturing, since a plurality of enamel round wires 2 are directly wound in an aligned manner at the same time, it is possible to provide a salient pole type rotor having good working efficiency such as shortening of winding time.

[0046]

As described above, the present invention (Claim 1)
According to claim 3), it is possible to provide a winding device and a winding method for stabilizing the quality of a salient-pole rotor formed by directly winding enamel round wires in an array.

Further, according to the present invention (corresponding to claims 4 to 6), it is possible to provide a salient-pole rotor which is excellent in downsizing and has good working efficiency in manufacturing. It is possible to provide a winding device for stabilizing the quality of a salient-pole rotor that is directly wound in alignment.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a winding device for a salient pole rotor that is a first embodiment of the present invention.

FIG. 2 is a schematic diagram of a winding method for a salient pole rotor that is a second embodiment of the present invention.

FIG. 3 is a schematic view of a salient-pole rotor winding method that is a modification of the second embodiment of the present invention.

FIG. 4 is a schematic diagram of a winding method for a salient pole rotor that is a third embodiment of the present invention.

FIG. 5 is a nozzle of a winding device according to a fourth embodiment of the present invention, in which FIG. 5A is an external view thereof and FIG. 5B is a front view thereof.

6A and 6B are L-shaped nozzles of a winding device according to a fifth embodiment of the present invention, in which FIG. 6A is an external view thereof and FIG. 6B is a front view thereof.

FIG. 7 shows a state of a salient-pole rotor when two enamel round wires are directly wound in alignment at the same time, which is a sixth embodiment of the present invention, and FIG. 7A is a sectional view thereof. , The figure (b)
Is the side view.

FIG. 8 is a front view of a conventional nozzle having a circular opening.

9A and 9B show a conventional nozzle having an elliptical opening, in which FIG. 9A is a front view seen from the narrow side, and FIG. 9B is a front view seen from the wide side.

FIG. 10 shows a conventional salient-pole rotor core, shown in FIG.
Is a sectional view thereof, and FIG. 6B is a side view of the salient pole portion.

FIG. 11 is an operation explanatory view of a conventional nozzle.

FIG. 12 is a connection diagram of a rotor coil, and FIG. 12A is a connection diagram of a series connection of the rotor coil of 10 series.
The same figure (b) is a connection diagram of the rotor coil in two parallel five series, and the same figure (c) is a connection diagram of the rotor coil in five parallel two series.

[Explanation of symbols]

1 ... Iron core salient pole portion, 2 ... Enameled round wire, 3, 3A, 3B
... Nozzle, 4 ... Tension variable device, 5 ... Tension control device, 6 ...
Frame, 7 ... Control device, 8 ... Enamel round wire supply device, 9
... U-shaped nozzle, 10 ... L-shaped nozzle, 11 ... Integrally molded iron core, 12 ... Insulator, 13 ... Grooved jig for aligned winding, 14 ... Coil for one pole.

Claims (6)

[Claims] 1. A salient-pole rotor winding device comprising a nozzle for directly winding an enameled round wire in an array on a salient pole portion of a rotor iron core, wherein tension of the enameled round wire is varied during winding. A winding device for a salient-pole rotor, comprising: a tension varying device and a tension controller for controlling the tension varying device. 2. A salient-pole rotor winding method in which an enameled round wire fed from a nozzle is directly wound on a salient pole portion of a rotor iron core in an aligned manner, wherein the nozzle orbits around the salient pole portion, A winding method for a salient pole rotor, wherein the tension of the enamel round wire fed from the nozzle is weakened to a predetermined tension only when the winding corner portion is wound and is wound directly on the salient pole portion. . 3. The winding method for a salient pole rotor according to claim 2, wherein the salient pole portion is wound around and the enamel round wire is wound directly in a state of being inclined forward with respect to the traveling direction of the nozzle. A winding method for a salient-pole rotor, which is characterized in that 4. A salient-pole rotor winding device in which an enameled round wire fed from a nozzle is directly wound on a salient pole portion of a rotor iron core in an array, and an opening for feeding the enameled round wire from the nozzle is provided. U-shaped, and the depth of the U-shape is ((number of enamel round wire to be wound) x (outer diameter of enamel round wire)-(half of outer diameter of enamel round wire)) and its inner wall A salient-pole rotor winding device characterized in that it is spread in a tapered shape. 5. A salient pole type rotor winding device in which an enameled round wire fed from a nozzle is directly wound on a salient pole portion of a rotor core in an aligned manner, and an opening for feeding the enameled round wire from the nozzle is provided. L-shaped, with the length of the long side of the L-shaped being ((number of enameled round wires) x (outer diameter of enameled round wire)-(half of enameled round wire)) A salient-pole rotor winding device characterized in that the inner wall is expanded in a tapered shape. 6. A salient pole type rotor in which an enamel round wire is directly wound in an array on a salient pole portion of a rotor iron core, and two or more enamel round wires are simultaneously wound around one salient pole portion. A salient pole rotor characterized by having a winding.