JP2000299967A - Winding for rotating electric machine fitted with fiber- optic sensor and method for fitting the fiber-optic sensor to the winding - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a winding for a rotating electric machine fitted with a fiber-optic sensor which can maintain high reliability over a long period. SOLUTION: A stator winding 2 is composed of a coil 21, equipped with a strand assembly 3 having protective bodies 31 which houses the principal portion of a fiber-optic temperature sensor 6. The protective bodies 31, which are formed in feat shapes having thicknesses of 1 mm, which are larger than the outside diameter (0.8 mm) of the optical fiber section of the sensor 6 by using a laminated epoxy glass material are attached to the outer periphery of the assembly 3 in a paired state, and a groove-like space 31a housing the sensor 6 is formed between the protective bodies 31. In the manufacturing process of the coil 21, a dummy sensor body composed of a piano wire, having the same dimension and cross-sectional shape as the sensor 6 has, is fitted to the coil 21 halfway of the process, so that the sensor 6 is not affected by the strong force which is necessarily generated in the manufacturing process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rotating electric machine winding on which an optical fiber sensor is mounted, and more particularly to a structure and a mounting method suitable for mounting an optical fiber sensor with high reliability.

[0002]

2. Description of the Related Art Windings for rotating electric machines are used under high voltage because they have many features such as high electrical insulation performance and small diameter so that they can be easily embedded in coils. Optical fiber sensors have been used for direct detection of temperature and the like of a coil portion. Then, a case of a rotating electrical machine winding using an optical fiber temperature sensor, which is a kind of optical fiber sensor, for directly detecting the temperature of the coil portion, was filed by the same applicant and disclosed in Japanese Unexamined Patent Publication No.
This is known from Japanese Patent No. 80011. A typical example of an optical fiber temperature sensor will be described below.
Referring to FIGS. 8 to 17, a description will be given of a rotating electric machine winding on which a conventional optical fiber sensor is mounted based on the contents of a rotating electric machine known from Japanese Patent Publication No. -80011.

FIG. 8 is a longitudinal sectional view showing a conventional stator of a rotary electric machine, and FIG. 9 is an enlarged longitudinal sectional view showing a main part of the conventional stator shown in FIG. 10 is a perspective view of the lower coil shown in FIG. 9, FIG. 11 is a perspective view of the upper coil shown in FIG. 9, FIG. 12 is a sectional view taken along line AA in FIG.
3 is a sectional view taken along line DD of FIG.
FIG. 15 is a sectional view taken along the line BB in FIG. 9, and FIG.
FIG. 16 is a cross-sectional view of the R portion of FIG. 9 as viewed from the direction of the arrow P in FIG. 9, and FIG. 17 is a cross-sectional view of the S portion of FIG. Note that FIG.
FIG. 1 shows the stator winding in a semi-manufactured state together with the stator core.
0 and FIG. 11 show the coil in a semi-manufactured state, and the illustration of the optical fiber temperature sensor is omitted. FIG.
The straight line XX shown in FIG. 16 is the center line of the coil slot in which the coil having the optical fiber temperature sensor is mounted.

In FIGS. 8 to 17, reference numeral 9 denotes a stator of a conventional rotary electric machine having a stator winding 8 and a stator core 7. The stator core 7 is mainly composed of a laminate of iron core plates made of a thin plate material such as a silicon steel plate, and the laminate of iron core plates has a plurality of coil slots 71 formed therein.
The stator winding 8 is a rotating electric machine winding in this case,
It is configured using a plurality of coils 81 loaded in the coil slot 71. Focusing on one coil slot 71, the coil 81 includes a lower coil 81A that is loaded first in the coil slot 71 and an upper coil 81B that is loaded in the coil slot 71 after the lower coil 81A. The main difference between the two is that the bending direction of the wire 82 used for the coil at the end of the coil 81 (FIG. 1)
0, see FIG. 11).

Therefore, the lower coil 81
A and the upper coil 81B are collectively referred to as the coil 81
Call. In this case, each coil 81 includes a wire assembly 87 and an insulating layer (such as a main insulating layer 85 described later) provided on an outer peripheral portion of the wire assembly 87. This wire assembly 87 uses a wire 82 in which wire insulation is applied to a rectangular copper wire, which is a conductor having a rectangular cross-sectional shape, and a main part (in many cases, the coil 81 is connected to the coil slot 71. By disposing and aligning a plurality of displaced wires 82 in a portion that is accommodated in the coil slot 71 when loaded, a wire assembly for a dislocation coil is formed.

Here, the outline of the transposition coil will be described with reference to a general example of a transposition coil element assembly 99 shown in FIG. 18 (a perspective view showing a general example of a transposition coil element assembly).
In the wire assembly 99 for a dislocation coil shown in FIG.
Illustration of a vertical layer insulating layer described later is omitted. The wire assembly 99 for the transposition coil is used to reduce the effect of the skin effect due to the leakage magnetic flux on the armature winding coil of a large-capacity rotating electric machine, and the like. transposition pitch direction forming or thickness direction formed in P conforming shape and dimensions _d is applied to the main unit. A laminated body 9 in which a plurality of the formed wires 82 are laminated in the thickness direction.
8 (98A, 98B) are prepared, and both are
By disposing them in the left-right direction in the width direction of No. 2 and combining the formed portions, a wire assembly 99 for a dislocation coil having a dislocation portion structure as shown in FIG. 18 is manufactured.

Returning to the description with reference to FIGS. 8 to 17, the strand assembly 87 is a laminate of a pair of strands 82 using a plurality of transposed strands (see FIG. 18). , A vertical layer insulating layer 83, an optical fiber temperature sensor 6, and an intersection insulating layer 84. The vertical layer insulating layer 83 is formed by treating a sheet-like electric insulating material (such as a woven or non-woven fabric (eg, polyester fleece) using an electric insulating fiber material such as a synthetic resin fiber) with an electric insulating resin (eg, an epoxy resin). And is provided in order to enhance the electrical insulation performance between the wires between the stacked body of the pair of wires 82.

In this case, the optical fiber temperature sensor 6 is mounted on at least a part of the plurality of coils 81 of the stator winding 8.
A groove 8 is provided at a portion where the optical fiber temperature sensor 6 is mounted.
The vertical layer insulating layer 83A on which 3a is formed is partially used (see FIG. 13). The crossing insulating layer 84 is an electric insulating layer interposed between the wires 82 at the dislocation positions as necessary to enhance the electric insulating performance of the wire insulating layer at the dislocation portion of the wire 82, and is a sheet. It is formed as a small piece using an electrically insulating material (for example, a sheet made of a synthetic resin material or a mica material having a thickness of about 0.2 to 1 [mm]). This crossing insulating layer 84 is formed of the laminate 9 shown in FIG.
At the stage of forming 8A and 98B, they are interposed between the wires 82 at the dislocation positions.

In all the wire assemblies 87 in the semi-manufactured state, the outer shape of the wire assembly 87 in the portion accommodated in the coil slot 71 is shaped into a predetermined size regardless of whether or not the optical fiber temperature sensor 6 is mounted. At the same time, a wire consolidation process is performed so that the aligned state of the wires 82 of the wire assembly 87 can be maintained even in the forming process of the wires 82 in a later step. In the strand hardening process, for example, an uncured electrically insulating resin material (epoxy resin varnish or the like) is coated with the main insulating layer 85.
Is applied from the outer surface of the wire assembly 87 in a range to be formed, and then subjected to a heat and pressure curing treatment (for example, about 150 ° C.,
Under temperature and pressure conditions of about 150 × 10 ⁴ [N / m ² ]
0 [min]. Then, the wire 82 of the coil end portion after the completion of the wire hardening process is subjected to a forming process as illustrated in FIGS. 10 and 11, and the wire assembly 87 is completed. Then, the wire assembly 87 used for the lower coil 81A and the wire assembly 87 used for the upper coil 81B are formed by the wire assembly 87 applied to the wire 82 at the coil end. The bending directions of the lines 82 are different from each other.

In the case of the stator winding 8, the main insulating layer 85 and the coil end insulating layer 86 are sequentially formed on the outer periphery of the wire assembly 87 manufactured as described above, so that the coil 8 is formed.
1 is produced. The main insulating layer 85 is an electric insulating layer for ground insulation of the stator winding 8 formed at a position where the coil 81 and thus the wire assembly 87 is accommodated in the coil slot 71. In the case where the main insulating layer 85 is known as a resin-impregnated type, an electric insulating tape material such as a mica tape is wound around the outer periphery of the strand assembly 87 so as to have a predetermined thickness. After that, it is formed by impregnating a thermosetting synthetic resin such as an epoxy resin in a vacuum and then performing a heat curing process (see FIGS. 10 and 11). In addition, the coil end insulating layer 86 is formed so that the coil 81 is
It is an electric insulating layer for maintaining electric insulation between the other coil 81 at the so-called coil end located outside, and is generally formed using an electric insulating tape material.

The stator winding 8 will be further described in terms of a portion to be loaded into the coil slot 71. The stator winding 8 has one lower coil 81A and one upper coil 81B, respectively.
And an interlayer insulating layer 88 made of an electrical insulating material, and a stator wedge 89
And an under-wedge insulating layer 891 made of an electrical insulating material (see FIG. 12). Immediately after the stator winding 8 is loaded in the coil slot 71, the wire 81 is exposed at the end 81a of each coil 81, and after the electrical connection process is performed at the end 81a, the electric insulation layer is formed. , The stator winding 8 is completed.

Incidentally, in this case, the optical fiber temperature sensor 6 comprises a plurality of coils 81 of the stator winding 8.
A temperature detector that uses the temperature dependence of the photoluminescence of gallium and arsenic crystal, and transmits the incident light given to the temperature detector and the radiated light from the temperature detector And an optical fiber section mainly composed of a quartz optical fiber. This temperature detecting section has the same or smaller outer dimensions as the optical fiber section. The optical fiber portion has an outer diameter of 0.5 in a range where the optical fiber portion is set in a portion covered with the main insulating layer 85.
It is composed of an optical fiber of about [mm] and a fluororesin coating layer having an outer diameter of about 0.8 [mm] for protecting the optical fiber. Since the outer diameter of the optical fiber temperature sensor 6 is thus small, the optical fiber temperature sensor 6 can be mounted on the stator winding 8 while maintaining the outer shape of the rotating electric machine.

The optical fiber temperature sensor 6 may be of a type utilizing various temperature detection principles, or an optical fiber manufactured using various materials, in addition to the above-described configuration. In addition, the optical fiber temperature sensor 6
As a matter of course, as disclosed in Japanese Patent Application Laid-Open No. 8-80011, a temperature measuring unit (not shown) is used in combination. This optical fiber temperature sensor 6
The temperature detecting section is mounted at the deepest part of the groove 83a formed in the vertical layer insulating layer 83A. In this case, the position where the temperature detection unit is installed is the center of the core plate laminate of the stator core 7 in the core plate lamination direction.

The optical fiber portion of the optical fiber temperature sensor 6 needs to be taken out of the coil 81, and the wiring portion of the optical fiber temperature sensor 6 is a wire assembly 87.
Of the wire 82 along the length direction of the wire 82,
It is pulled out of the coil 81 from the end of the coil 81 (see FIGS. 13 to 16). The method of extracting the routing portion of the optical fiber temperature sensor 6 from the coil 81 is as follows.
When the coil end insulating layer 86 is formed using the electrically insulating tape material, the coil end insulating layer 86 is gradually drawn out toward the outer surface while following the winding direction of the wound electrically insulating tape material (FIG. 17). See).

Since the conventional stator winding 8 is configured as described above, the temperature of the coil 81 can be directly measured using the optical fiber temperature sensor 6 installed adjacent to the strand 82, It exhibits such features that the temperature of the coil 81 can be measured with high precision without time delay. The above description of the stator winding 8 to which the optical fiber temperature sensor 6 is mounted has been described for the case where a dislocation coil is used. However, the optical fiber temperature sensor 6 is a stator winding using a turtle-shaped coil or the like. Applicable to lines. Also,
The direct measurement target of the stator winding using the optical fiber sensor is not limited to temperature measurement.
No. 7345 discloses an example in which an optical fiber is used for detecting radiation light generated in a stator winding.
Japanese Patent Application Publication No. 311144 discloses an example in which an optical fiber pressure sensor is used for detecting mechanical stress generated in a stator winding.

[0016]

The above-described stator winding 8 according to the prior art has a feature that the temperature of the coil 81 can be measured with high accuracy without a time delay, but has the following problems. It has been found and its solution has become an issue. That is, since the optical fiber temperature sensor 6 has a small diameter, the optical fiber temperature sensor 6 is liable to be damaged at the time of the wire hardening process of the wire assembly 87 or at the time of forming the wire 82 at the coil end portion. In the worst case, the optical fiber portion is cut and bent. Of the optical fiber temperature sensor 6 becomes unusable. A problem from the viewpoint of long-term reliability of the rotating electric machine having the stator winding 8 is that the optical fiber temperature sensor 6 is not cut but severely damaged.

In the wire assembly 87 using a transposition coil, a protruding portion is formed at the transposition portion of the wire 82 as illustrated in FIG. 18, so that the optical fiber to be disposed through the protruding portion is provided. The temperature sensor 6 is susceptible to severe damage during the wire hardening process. Also, the forming process of the wire 82 at the coil end portion is mainly performed by bending the wire 82 in the width direction, which is not easy to process as compared with the bending process in the thickness direction of the wire 82. Therefore, when necessary, it is extremely likely that a large impact force is applied, such as by using a hammer. Therefore, the optical fiber temperature sensor 6 is liable to be severely damaged during the molding process. In the optical fiber temperature sensor 6 thus severely damaged, the damage proceeds sequentially during the operation of the rotating electric machine, so that the probability of the optical fiber temperature sensor 6 being disconnected during the long-term use of the rotating electric machine is extremely high. Become. This is a serious problem for the long-term reliability of the rotating electric machine. The present invention has been made in view of the above-mentioned problems of the related art, and has as its object to provide a rotating electric machine winding having an optical fiber sensor having high long-term reliability.

[0018]

According to the present invention, there are provided the following objects: 1) a plurality of coils using a wire assembly formed by winding a wire, and an optical fiber sensor mounted on the wire assembly. In the rotating electric machine winding equipped with the optical fiber sensor having the above structure, the coil is provided with a protector for accommodating and protecting the optical fiber sensor in an outer peripheral portion of a wire assembly in which the optical fiber sensor is routed and arranged. And
Or 2) In the means described in 1 above, the wire assembly is formed by aligning and winding a number of wires having a rectangular cross section, and the protective body is aligned and wound. A flat body having a groove for storing an optical fiber sensor which is installed along the length of the wire on the outer peripheral portion of the assembly; or 3) formed by winding the wire. A method for mounting an optical fiber sensor on a rotating electrical machine winding, wherein the optical fiber sensor is mounted on a rotating electrical machine winding assembly having a plurality of coils using the strand assembly. A simulated sensor having the same dimensions and shape as the optical fiber sensor is buried in the part where the optical fiber sensor is buried when the assembly is formed, and the optical fiber sensor is disposed on the outer periphery of the wire assembly. Turning First that the protection body for housing the partial housing the lead-out portion of the sensor mimics
Subjecting the main part of the wire assembly with the sensor simulated body obtained in the wire assembly forming step of the first wire assembly forming step to heat and pressure treatment using an electrically insulating resin material. A second wire assembly forming step of forming a portion where the wire hardening process has not been performed after the wire hardening process is performed, and a sensor simulated body having passed through the second wire assembly forming step A third wire assembly forming step of removing the sensor simulated body from the attached wire assembly and replacing it with an optical fiber sensor;
And 4) forming an electrical insulating layer on an outer peripheral portion of the wire assembly with an optical fiber sensor obtained in the third wire assembly forming step. 4. The means according to claim 3, wherein the wire assembly is formed by aligning and winding a number of wires having a rectangular cross-sectional shape, and the protection body is formed by an outer periphery of the aligned wire assembly. This is achieved by a manufacturing method which is a flat body having a housing groove for an optical fiber sensor which is provided along the length direction of the element wire in the portion.

[0019]

Embodiments of the present invention will be described below in detail with reference to the drawings. In the following description, the same parts as those of the conventional stator 9 shown in FIGS. 8 to 17 are denoted by the same reference numerals, and the description thereof will be omitted. In addition, in the drawings used in the following description, only reference numerals shown in FIGS. 8 to 17 are represented as representative as possible.

FIG. 1 is a sectional view taken along the line EE in FIG. 2 of a coil for a stator winding according to an embodiment of the present invention. FIG. 2 is a longitudinal sectional view showing a stator winding in a semi-manufactured state having the coil shown in FIG. 1 together with a stator core part in an enlarged manner, and FIG.
FIG. 3 is a sectional view taken along line HH in FIG. 3 of a portion T in FIG. 2. FIG.
4 is a cross-sectional view showing a wire assembly with a sensor simulated body at the same site as FIG. 4, FIG. 6 is a cross-sectional view showing a wire assembly with a sensor simulated body at the same site as FIG. 1, and FIG. FIG. 3 is a cross-sectional view showing the same part as a cross section taken along line GG of FIG.

First, in FIGS. 1 to 4, reference numeral 1 denotes that the stator winding 2 is used in place of the stator winding 8 with respect to the conventional stator 9 shown in FIGS. 8 to 17. It is a stator of a rotating electric machine. When the stator winding 2 is compared with the stator winding 8 according to the conventional example, the wire assembly 3 provided with the protector 31 for storing and protecting the main part of the optical fiber portion of the optical fiber temperature sensor 6 in the coil 21 is used. Only the difference is. Thus, in FIG. 2, 21A is a lower coil corresponding to the lower coil 81A of the conventional example, and 21B is an upper coil corresponding to the upper coil 81B of the conventional example.

The protector 31 is a stator winding 2 according to the present invention.
Is formed in a flat plate shape using a plate made of an electrical insulating material (such as an epoxy glass laminated material), and its length dimension is substantially equal to the formation range of the main insulating layer 85. The protection body 31 is attached to the outer peripheral portion of the wire assembly 3 in which the optical fiber portion of the optical fiber temperature sensor 6 is routed. In the case of the stator winding 2, the protector 31 is formed to have a thickness of about 1 [mm] slightly larger than the outer diameter of the optical fiber section of 0.8 [mm]. A groove-shaped gap 3 attached to the outer peripheral portion of the wire assembly 3 for accommodating the optical fiber temperature sensor 6 therebetween.
1a is formed (see FIG. 1 and the like). That is, in the wire assembly 3, the gap 31 a is a storage groove for the optical fiber sensor 6. Thus, in the wire assembly 3, since the leading portion of the optical fiber temperature sensor 6 is accommodated in the gap 31 a, for example, even in the case of a wire assembly for a transposition coil, the projecting portion of the transposition portion of the wire 82 is used. The optical fiber temperature sensor 6 is not damaged.

Incidentally, the characteristic manufacturing method according to the present invention is used for manufacturing the coil 21 with the optical fiber temperature sensor 6 shown in FIGS. Next, FIG.
The method of manufacturing the coil 21 will be described with reference to FIGS. In manufacturing the coil 21 with the optical fiber temperature sensor 6, instead of the optical fiber temperature sensor 6, a sensor simulated body 4 is first attached to a portion where the optical fiber temperature sensor 6 is attached or routed to the wire assembly 3. Is done. The sensor simulated body 4 has substantially the same or slightly larger dimensions and cross-sectional shape as the optical fiber portion of the optical fiber temperature sensor 6, and is made of a material having high mechanical strength such as a round metal material (for example, a piano wire). It is made. The sensor simulated body 4 is subjected to a release treatment by applying a release agent (such as silicone grease).

Thus, the sensor simulation body 4 is attached to the vertical layer insulating layer 83 with its tip located at the innermost part of the groove 83a in which the temperature detecting portion of the optical fiber temperature sensor 6 is mounted (see FIG. 5). ). Optical fiber temperature sensor 6
The portion of the sensor simulated body 4 corresponding to the routing portion is housed in the gap 31a of the protection body 31, and then routed to the outer peripheral portion of the coil end portion of the wire assembly 3, and The wire assembly 3 is formed by a binding body 41 using a tape material or the like.
(See FIGS. 6 and 7). If necessary, the groove 83a, the gap 3
A release agent may be applied to 1a and the like.

In the main part of the wire assembly 3 to which the sensor simulated body 4 is attached, the forming process of the wire 82 of the coil end portion has not been started yet. The strand hardening process is performed under the same conditions. At this time, since the optical fiber temperature sensor 6 has not been mounted on the strand assembly 3 yet, the optical fiber temperature sensor 6 is not damaged at all during the heating and pressurizing treatment of the strand hardening. In addition, since the sensor simulated body 4 is manufactured using a material having high mechanical strength, the sensor simulated body 4 is not deformed at the time of heating / pressing treatment for solidifying the wire. The wire assembly 3 with the sensor imitation body 4 that has been subjected to the wire consolidation process is subjected to forming processing on the wire 82 of the coil end portion in the same manner as in the case of the wire assembly 87 of the conventional example.

This forming is mainly performed by bending the wire 82 in the width direction. When necessary, it is extremely likely that a large impact force is applied by using a hammer. Since the simulated body 4 is held by the strand assembly 3 by the binding body 41, the attached state of the sensor simulated body 4 is maintained as it is. The wire assembly 3 with the sensor simulated body 4 which has been subjected to the wire hardening process and the forming process of the wire 82 of the coil end portion, removes the binding body 41 as necessary, and then forms the sensor simulated body 4. Removed. When the sensor simulated body 4 is removed, a hole having the same shape as the outer shape of the sensor simulated body 4 remains in the groove 83a and the like. The optical fiber temperature sensor 6 is inserted and attached to this hole. At this time, an electrically insulating lubricant (such as silicone grease) is applied to the optical fiber temperature sensor 6 as needed.

The treatment of the routing portion of the optical fiber temperature sensor 6 attached as described above is performed in the same manner as in the conventional wire assembly except that a part thereof is housed in the groove-shaped gap 31a formed by the protective body 31. This is the same as the case of the solid 87. In the main part of the wire assembly 3 to which the optical fiber temperature sensor 6 is attached, the main insulating layer 85 and the coil end insulating layer 86 are also provided in the same manner as in the case of the conventional wire assembly 87.
Is formed, and the coil 21 is completed. When forming the main insulating layer 85 and the coil end insulating layer 86, the optical fiber temperature sensor 6 is already attached to the wire assembly 3. However, the optical fiber temperature sensor 6 provided at the portion where the main insulating layer 85 is formed is provided. The optical fiber temperature sensor 6 is not damaged because the routing portion of the optical fiber temperature sensor 6 is accommodated in the gap 31a and a large force is not applied to the wire assembly 3 in this step.

The coil 21 is loaded into the coil slot 71 in the same manner as the conventional stator winding 8 (FIG. 2,
Referring to FIG. 3), the coils 21 are connected to each other at the ends 81a, and are covered with an electric insulating layer, whereby the stator winding 2 is completed. Since the stator winding 2 according to the embodiment of the present invention shown in FIGS. 1 to 7 has the above-described configuration and manufacturing method, the optical fiber temperature sensor 6 is manufactured during the manufacturing of the stator winding 2.
Is not damaged, thereby obtaining a stator winding 2 having a long-term reliable optical fiber temperature sensor 6.

In the above description, it has been described that two protective bodies 31 are formed as a set and a groove-shaped gap 31a is formed between them. However, the present invention is not limited to this. The storage groove of the optical fiber temperature sensor 6 may be formed integrally by forming it into a sectional shape. In the above description,
Although the coil to be mounted with the optical fiber temperature sensor 6 has been described as a transposition coil, the present invention is not limited to this.
It may be a turtle-shaped coil. Furthermore, in the above description, the optical fiber sensor attached to the coil is the optical fiber temperature sensor 6, but is not limited thereto, and may be, for example, an optical fiber for detecting emitted light.

[0030]

According to the present invention, there is provided a rotating electric machine winding having an optical fiber sensor and a method for mounting the optical fiber sensor on the rotating electric machine winding according to the present invention. As a result, the following effects can be obtained.

By adopting the constitution according to the first and second aspects of the invention to solve the above problem, the optical fiber sensor can be accommodated in the accommodating groove portion of the protective body. Since it can be protected from external forces and the like that are inevitably generated in the manufacturing process of the rotating electrical machine winding, it is possible to obtain a rotating electrical machine winding with an optical fiber sensor having high long-term reliability. Further, by adopting the manufacturing method according to (3) or (4) of the means for solving the above-mentioned problem, the optical fiber sensor can reduce the external force inevitably generated in the manufacturing process of the rotating electric machine winding. Since it does not occur, it is possible to obtain a rotating electric machine winding with an optical fiber sensor having high long-term reliability.

[Brief description of the drawings]

FIG. 1 is a sectional view taken along line EE in FIG. 2 of a coil for a stator winding according to an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view showing a main part of a stator winding having a coil according to FIG. 1 together with a stator core part;

FIG. 3 is a sectional view taken along line FF in FIG. 2;

4 is a sectional view taken along line HH in FIG. 3 of a portion T in FIG. 2;

FIG. 5 is a cross-sectional view showing a wire assembly with a sensor mimic body at the same site as in FIG. 4;

FIG. 6 is a cross-sectional view showing a wire assembly with a sensor mimic at the same site as in FIG. 1;

FIG. 7 is a cross-sectional view showing the same part as the GG cross section in FIG. 2 of the strand assembly with the sensor simulated body;

FIG. 8 is a longitudinal sectional view showing a stator of a conventional rotating electric machine.

9 is an enlarged longitudinal sectional view showing a main part of the conventional stator shown in FIG. 8;

FIG. 10 is a perspective view of a lower coil shown in FIG. 9;

FIG. 11 is a perspective view of an upper coil shown in FIG. 9;

12 is a sectional view taken along line AA in FIG. 9;

13 is a sectional view taken along line DD in FIG. 12 of the Q section in FIG. 9;

14 is a sectional view taken along line BB in FIG. 9;

15 is a sectional view taken along the line CC in FIG. 9;

FIG. 16 is a view of the R portion in FIG. 9 as viewed from the arrow P in FIG. 9;

FIG. 17 is a sectional view of a portion S in FIG. 9;

FIG. 18 is a perspective view showing a wire assembly for a dislocation coil of a general example.

[Description of Signs] 2 Stator winding 21 Coil 3 Element assembly 31 Protector 31a Gap 6 Optical fiber temperature sensor

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Masayuki Ishido 1-1-1, Tanabeshinda, Kawasaki-ku, Kawasaki-shi, Kanagawa F-term within Fuji Electric Co., Ltd. (Reference) 5H604 AA05 AA08 BB14 CC01 CC05 CC13 CC16 DB30 PB04 5H611 AA01 BB01 BB02 PP02 PP06 QQ04 RR04 UA02 UA07 UB01

Claims (4)

[Claims] A rotary electric machine winding provided with an optical fiber sensor including a plurality of coils using a wire assembly formed by winding a wire and an optical fiber sensor mounted on the wire assembly. Wherein the coil comprises a protective body for accommodating and protecting the optical fiber sensor in an outer peripheral portion of a wire assembly in which the optical fiber sensor is routed and disposed, wherein a rotating electric machine winding provided with the optical fiber sensor is provided. . 2. The rotating electric machine winding having the optical fiber sensor according to claim 1, wherein the wire assembly is formed by aligning and winding a plurality of wires having a rectangular cross-sectional shape, and the protection body is provided. Is a flat plate-like body having a groove for receiving an optical fiber sensor, which is provided along the length direction of the strand on the outer peripheral portion of the aligned wire assembly and has an optical fiber sensor. Rotating electric machine winding. 3. An optical fiber sensor mounted on a rotating electrical machine winding, wherein an optical fiber sensor is mounted on a rotating electrical machine winding wire assembly having a plurality of coils using a wire assembly formed by winding a wire. A method of embedding a sensor simulated body having substantially the same dimensions and shape as an optical fiber sensor in a portion where an optical fiber sensor is embedded when forming an optical fiber assembly using the element wire, A first wire assembly forming step of storing the routing portion of the sensor mimic body in a protective body for storing the routing portion of the optical fiber sensor disposed on the outer periphery of the three-dimensional body, and a first wire set After the main part of the wire assembly with the sensor simulated body obtained by the three-dimensional forming process is subjected to heat and pressure treatment using an electrically insulating resin material, the wire hardening process is performed. Untreated area Forming a second wire assembly, and removing the sensor simulated body from the wire assembly with the sensor simulated body that has passed through the second wire assembly forming step, and replacing it with an optical fiber sensor. A wire assembly forming step; and an electric insulating layer forming step of forming an electric insulating layer on an outer peripheral portion of the wire assembly with the optical fiber sensor obtained in the third wire assembly forming step. To attach optical fiber sensors to rotating electrical machine windings. 4. The method for mounting an optical fiber sensor on a winding of a rotating electrical machine according to claim 3, wherein the wire assembly is formed by aligning and winding a number of wires having a rectangular cross-sectional shape. The rotating electric machine is characterized in that the protection body is a flat body having an accommodation groove for an optical fiber sensor and installed along the length direction of the wire around an outer periphery of the aligned wire assembly. How to attach an optical fiber sensor to the winding.