MXPA01010999A - STATOR FOR ROTATING ELECTRICAL MACHINE AND METHOD FOR THE MANUFACTURE OF THE SAME. - Google Patents
STATOR FOR ROTATING ELECTRICAL MACHINE AND METHOD FOR THE MANUFACTURE OF THE SAME.Info
- Publication number
- MXPA01010999A MXPA01010999A MXPA01010999A MXPA01010999A MXPA01010999A MX PA01010999 A MXPA01010999 A MX PA01010999A MX PA01010999 A MXPA01010999 A MX PA01010999A MX PA01010999 A MXPA01010999 A MX PA01010999A MX PA01010999 A MXPA01010999 A MX PA01010999A
- Authority
- MX
- Mexico
- Prior art keywords
- stator
- circumference
- flow
- grooves
- bridges
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 16
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000463 material Substances 0.000 claims abstract description 25
- 239000004020 conductor Substances 0.000 claims abstract description 16
- 230000004907 flux Effects 0.000 claims description 27
- 230000035699 permeability Effects 0.000 claims description 14
- 238000011282 treatment Methods 0.000 claims description 6
- 230000005381 magnetic domain Effects 0.000 claims description 5
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 229910000734 martensite Inorganic materials 0.000 description 2
- 238000007669 thermal treatment Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002178 crystalline material Substances 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 230000001603 reducing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
- H02K15/021—Magnetic cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Manufacture Of Motors, Generators (AREA)
- Induction Machinery (AREA)
Abstract
Un estator para un maquina electrica rotatoria que incluye una primera parte del estator (2) esencialmente en forma de un cilindro hueco con una superficie de la cubierta interna (4) y con una pluralidad de ranuras (3) que se dirigen al menos parcialmente en la direccion axial del estator (1), que se proyecta reciban los conductores del estator (8), en donde se delimita cada una de las ranuras en la direccion radial hacia la superficie de la cubierta interna de la primera parte del estator por medio de un puente (5). La primera parte del estator (2) incluye al menos una porcion del estator que influencia el flujo, en donde se dispone al menos parcialmente por lo menos uno de los puentes y tiene una estructura de material interno que lo provee con una resistencia magnetica, en donde al menos en la direccion de la circunferencia del estator es mayor que la resistencia magnetica en la direccion radial del estator en aquellas porciones de la primera parte del estator que rodea la porcion que influencia el flujo.A stator for a rotating electric machine that includes a first part of the stator (2) essentially in the form of a hollow cylinder with a surface of the inner cover (4) and with a plurality of grooves (3) that are directed at least partially in the axial direction of the stator (1), which is projected to receive the stator conductors (8), where each of the grooves is delimited in the radial direction towards the surface of the inner cover of the first part of the stator by means of a bridge (5). The first part of the stator (2) includes at least a portion of the stator that influences the flow, where at least partially one of the bridges is arranged and has an internal material structure that provides it with a magnetic resistance, in where at least in the direction of the circumference of the stator is greater than the magnetic resistance in the radial direction of the stator in those portions of the first part of the stator surrounding the portion that influences the flow.
Description
STATOR FOR ROTARY ELECTRIC MACHINE AND METHOD FOR THE MANUFACTURE OF THE SAME
FIELD OF THE INVENTION The present invention relates to a stator for a rotary electric machine that includes a first part of the stator essentially in the form of a hollow cylinder with a surface of the inner cover and with a plurality of grooves that is at least partially directed in the axial direction of the stator, provided to receive the stator conductors, wherein each of the grooves in the radial direction is delimited towards the surface of the internal cover of the first part of the stator by means of a bridge.
BACKGROUND OF THE INVENTION A rotary electric machine means a direct current machine as well as alternating and also a synchronous as well as asynchronous machine. The rotary electric machine is especially suitable for use as a motor, but it can also be used as a generator. In the following, the rotary electric machine will be explained when it is constituted of an asynchronous motor, which in turn is used as an electric motor. This field of applications will be discussed raF: 133890 primarily as an exemplification objective and in no way with a restrictive sense. It is expected that the stator conductors are connected to a high voltage source. In operation a rotating magnetic flux arises, the speed of rotation is adjusted among other things by the frequency of the supply voltage. The rotor of the machine is influenced by the rotating magnetic flux and causes its rotation. In a conventional stator, the grooves receiving the stator conductors extend in the axial direction of the stator and are open towards the surface of the internal cover of the stator. Accordingly, the stator conductors in the form of so-called coils are placed in the grooves, in the radial direction, from the internal space of the stator. However, in the stator in question the slots are arranged with a distance from the surface of the inner cover. Thus, each of the slots is delimited towards the surface of the inner cover by the bridge. A plurality of advantages can be achieved by a stator, compared to the conventional stator. For example, opportunities to create a smooth circular cylindrical internal surface of the stator are given. According to the proper design of the rotor, a machine can be achieved with
.
a substantially uniform air gap between the stator and the rotor in the direction of the circumference of the rotor, which is advantageous for achieving high efficiency. A stator, wherein the grooves are spaced from the surface of the inner cover of the stator, is most advantageous for applications where a gas, which is in direct contact with these grooves will have a negative effect on the function of the stator conductors, it is tried to use in the air gap between the stator and the
10 rotor. The stator is also known, wherein the stator slots are open towards a surface of the outer cover of the first part of the stator. For this reason, the stator conductors can be placed in the
15 slots from the outside of the first part of the stator, which is advantageous for reasons of manufacturing technique. In order to achieve a machine with high efficiency, a magnetic flux must be minimized through the
20 bridges in the direction of the circumference. According to the prior art this has been achieved by the fact that the slots are arranged in such a way that a part of the bottom of the respective slot is located in proximity to the surface of the internal cover of the stator. Without
However, it has occurred, especially when
Slots extend relatively far in the radial direction of the stator, a too thin bridge has a tendency to deform and may break during the manufacture and handling of the stator. BRIEF DESCRIPTION OF THE INVENTION An object of the invention is to provide a stator for a rotary electric machine, which has bridges that separate the respective slots of the
10 stator of a surface of the internal cover of the stator and this stator provides the conditions for the manufacture of a machine, which in relation to previously known machines have a high efficiency in combination with a mechanical rigidity
15 relatively high stator. This objective is achieved because the first part of the stator includes at least a portion of the stator influencing the flow, which is arranged at least partially on at least one of the bridges and has a structure 0 of the internal material that provides it with a resistance magnetic, that at least in the direction of the circumference of the stator is greater than the magnetic resistance in the radial direction of the stator in those portions of the first part of the stator surrounding the portion that influences the flow. Since the
Fefe_ > Stator portion on the bridge, counteracts the incidence of an unwanted deviated flow through the bridge in the direction of the circumference of the stator in the operation of the machine and the magnetic flux is forced to be directed in the radial direction of the stator to a greater degree. This, in turn, causes a high concentration of magnetic flux in the air gap between the stator and the rotor, causing a high efficiency of the machine. In accordance with one embodiment of the invention, a plurality of mutually spaced flow-influencing portions are disposed in the circumferential direction of the stator between the grooves and the surface of the inner cover. By this the magnetic flux is directed in the direction of the first site in the radial direction between the portions that influence the flow, resulting in better efficiency. According to another embodiment of the invention, in the circumferential direction of a stator, the stator portion substantially has the same extension as one of the bridges. By this, the presence of the stator portion will substantially not have any negative effect on the magnetic flux in the radial direction of the stator. According to another embodiment of the invention, the structure of the internal material in the portion that influences the flow provides the latter with a lower permeability than the permeability of those portions of the first part of the stator that surrounds the portion that influences the flow . Therefore, the portion that influences the flow, in relation to the rest of the first part of the stator, is magnetized to saturation with a lower magnetic flux. This implies that the bridge magnetizes to saturation with a lower magnetic flux in relation to the previous art, which in turn results with the magnetic flux to a greater degree that is directed with radial direction. According to another embodiment of the invention, the structure of the internal material in the portion influencing the flow has a magnetic domain structure that counteracts a magnetic flux through the portion that influences the flow in the direction of the circumference of the stator. The magnetic domains are arranged, for example, with low mutual mobility. Therefore, the magnetic flux is forced to be directed to a greater degree in the radial direction of the stator. According to another embodiment of the invention, the portion that influences the flow extends for at least 50% of the radial extent of the bridge. Therefore, a very small magnetic flux is simply directed in the direction of the circumference of the stator through the bridges, which provide high efficiency. Another object of the invention is to provide a method for manufacturing a stator for a rotary electric machine, by means of which the stator can be manufactured with a relatively high mechanical stiffness and this stator also provides the conditions to realize a machine with a high efficiency. This objective is achieved by producing a first part of the stator in the form of a hollow cylinder with an inner cover surface and with a plurality of grooves which are directed at least partially in the axial direction of the stator, each of these are delimited towards the surface of the inner cover of the first part of the stator by means of a bridge and that are provided to receive the stator conductors and in these at least a portion, at least partially part is formed of one of the bridges, it is treated in such a way that a structure of the internal material is obtained which is provided with a magnetic resistance, which in the direction of the circumference of the stator is at least greater than the magnetic resistance in the radial direction of the stator in those portions of the first part of the stator that surrounds the stator portion. A magnetic flux, generated by the machine in operation, will be directed to a lesser degree in the direction of the circumference of the stator through the bridges and with greater degree in the radial direction of the stator towards the air gap, placed between the stator and the rotor and towards the rotor, which causes an improvement in the efficiency of the machine. According to another embodiment of the invention, each portion of the stator is treated in such a way that a structure of the internal material is obtained with a permeability substantially less than the permeability in those parts of the first part of the stator, which surrounds the stator portion. . By operating the machine, the bridges that include the first portions will be magnetized to saturation with a reduced magnetic flux. This causes the magnetic flux to spread to a greater degree in the radial direction of the stator. According to another embodiment of the invention, each portion of the stator is treated in such a way that a structure of the internal material with a greater magnetic resistance in the direction of the circumference of the stator is obtained, than in the radial direction of the stator. Thus, after the treatment the magnetic characteristics will be directed in such a way as to counteract a magnetic flux through the stator portion in the direction of the circumference of the stator.
«In accordance with another embodiment of the invention, each portion of the stator is machined in such a way that the stator portion is plastically deformed. The tilling is relatively easy to do and therefore the cost 5 will be moderate. The styling for example can be done by means of a cylindrical shaped tool, with an external diameter that is somewhat smaller than the internal diameter of the stator and several portions protruding from the cylindrical surface, where the tool is
10 directs through the internal space of the stator. Accordingly, protruding portions are provided to deform at least partially the bridges in such a way as to affect the magnetic domains. Other stator modes and method for
The manufacture of the same according to the invention will be seen more clearly in the claims and in the following description.
BRIEF DESCRIPTION OF THE DRAWINGS A detailed description of the preferred embodiments of the invention with reference to the accompanying drawings, described as a means of exemplification, are presented below.
Fig. 1 reveals a view of the cross section of a stator in accordance with a first preferred embodiment.
Fig. 2 reveals the design of a stator more closely for one of the stator slots, illustrated in Fig.l.
DETAILED DESCRIPTION OF THE INVENTION Fig. 1 discloses a stator 1 essentially in the form of a hollow cylinder according to a first preferred embodiment. The stator 1 includes a first part 2 with different slots 3 which are directed in their axial direction. Each of the grooves 3 is delimited in the radial direction towards a surface of the inner cover 4 of the first part of the stator by means of a bridge 5. The bridge 5 forms a part of the first part of the stator 2. Thus, the bridges 5 and the portions of the first part of the stator, which are located between the slots 3, form a continuous part. A plurality of stator conductors 8 are provided in slots 3, called coils in the form of a plurality of fine wires all of a good electrically conductive material such as copper. Since the slots 3 are open towards a surface of the outer cover 6 of the first part of the stator 2, the stator conductors can easily and effectively be placed within the slots 3. A second part of the stator 7 is disposed in the radial direction outside the first part of stator 2 and enclosing it. A rotor disposed within the surface of the internal cover 4 of the stator is provided. An air gap is provided between the stator 1 and the rotor. The stator will be explained immediately for the case when it constitutes a part of a rotary electric machine in the form of an electric motor. The stator conductors 8, arranged in the slots 3, are connected to a voltage source. When the conductors of the stator 8 are provided in a suitable manner, a magnetic flux arises in the machine, which is directed through a magnetic circuit which is formed by the first part of the stator 2, the rotor and the second part of the stator 7. The magnetic flux is projected to pass the air gap between the stator 1 and the rotor in the radial direction. In a stator, according to the prior art, with the bridges 5 between the slots 3 and the surface of the internal cover 4 of the stator, there is a risk that a part of the flow is directed through the bridges in the direction of the circumference of the stator, causing a smaller part of the flow to pass through the air gap and to be directed through the rotor, which in turn results in reduced efficiency. According to the invention, a better efficiency can be obtained by at least partially restricting the direction of the magnetic flux in the direction of the circumference of the stator through the bridges. This can be done in different ways. Some of the methods are described below with reference to both Fig. 1 and Fig. 2. By arranging a portion of the stator 9, which is placed at least partially on a bridge 5, with a structure of the internal material where the magnetic flux is influenced in such a way that it is at least partially restricted from being directed through it and thanks to the fact that the bridge to the load If the machine is magnetized to saturation within the projected load range, a reduced flow will be directed through the bridge and thus the flow circulation will be restricted to a greater degree in the radial direction of the stator to the air cylinder and the rotor. The portion of the stator 9 influencing the flow has reduced magnetic characteristics relative to the stator material. These portions of the stator 9 are preferably made by means of the treatment of the first part of the stator 2 from its interior. The portion of the stator 9 extends from the inner surface 4 of
** i-k ..
the first part of the stator 2 by at least 50% of the length of the bridge 5 in the radial direction of the stator, preferably by at least 75% of the length of the bridge in the radial direction of the stator and in accordance with a preferred example by minus 90% of the length of the bridge in the radial direction of the stator. The extension of the portion of the stator 9 in the direction of the circumference of the stator is substantially shorter than the distance between two adjacent bridges 5 in the direction of the circumference of the stator. The extension of the stator portion 9 in the direction of the circumference of the stator is, in accordance with a preferred embodiment, less than 20% of the distance between the adjacent bridges. Preferably the portion of the stator 9 has an extension in the direction of the circumference of the stator, which substantially corresponds to the length of the bridge 5 in the circumferential direction. The extension of the portion of the stator 9 in the direction of the circumference of the stator is at least 90% of the length of the bridge in the direction of the circumference and with a maximum with an extension that is 10% greater than the length of the bridge. . In such a way that the stator portion 9 will substantially not have any negative effect on the magnetic flux in the radial direction of the stator. The stator portion 9 of 4
According to a preferred embodiment, it is arranged symmetrically on the bridge 5 in the direction of the circumference. Thus, the purpose of the stator portion 9 is to provide an improved magnetic resistance against the magnetic flux in a circuit extending through the bridge 5 where the stator portion 9 is disposed. Preferably, the portions of the stator 9 are they place on each of the bridges 5. The stator 1, except for the portions of the stator 9, is essentially formed of a magnetic center. The magnetic center is preferably constituted by iron or an iron alloy. The center of the stator according to FIG. 1 is formed by a first 2 and a second 7 stator part. According to a first example the portion of the stator 9 has a structure of the internal material where the permeability is less than in the portion of those portions of the first part of the stator that surround the stator portion 9. Naturally, permeability means the magnetic permeability . A low permeability can be achieved by a different composition of crystalline material or structure relative to the material surrounding the stator. For example, a low permeability can be achieved by thermal treatment of the material. The heat treatment is applied locally in the portions of the stator. For example, a heat treatment may be in the form of laser exposure. A desired crystalline structure can be achieved by heating to a suitable temperature level and then cooling rapidly. An example of a constituent part of the structure, which has low permeability to magnetic fields and can be achieved by thermal treatment, is constituted by martensite. For example, the heat treatment may also be in the form of inductive heating or welding. Thus, according to one example of the embodiment, the material is heat treated in such a way that a martensite structure is obtained in the portions of the stator. According to a second example, which forms a complement or an alternative to the first example, the magnetic domains are placed in the stator portion in such a manner in relation to one another that they are restricted in their relative movement to each other. For example this can be achieved by defects, in the form of dislocation, the boundaries of the center, defects of the tip, etc., which are introduced into the reticulated structure. These defects fix the boundaries of the domain and thus prevent the movement or growth of the domains. When a magnetic field is applied, the domains will therefore not be able to align in
JtA-- -t the direction of the magnetic field, which reduces the magnetic characteristics of the stator portion. These defects, for example, can be achieved by means of a plastic deformation. For example, in a plastic deformation of the bridges, a tool can be used, with a cylindrical shape and with a plurality of protruding portions of the tool in its radial direction. The deformation is achieved by means of a tool that has a shape in which the portions that
10 protrude the bridges at the positions of the stator portions when the tool is moved through the stator. In accordance with another example, foreign elements in the form of carbon and nickel are supplied to the
15 portion of the stator at an improved temperature. Because of this, the foreign elements are forced into the crosslinking and disrupt the regularity in it, which has a negative effect on the magnetic characteristics of the stator portion. In accordance with another example, ions in the form of nitrides, carbides, etc., are supplied to the stator portion during heating. These ions disrupt the regularity in the crosslinking of the metal and that it has a reducing effect on the magnetic characteristics of the
25 portion of the stator.
It is possible to provide the portions of the stator 9 with an internal structure with aligned magnetic characteristics. In order to counteract a magnetic flux in the direction of the circumference of the stator, the stator portion can be provided with a structure of the internal material that exhibits a greater magnetic resistance in the direction of the circumference than in the radial direction. Therefore, in the stator portion, conditions are created to obtain a relatively high magnetic flux density in the radial direction and a relatively low magnetic flux density in the direction of the circumference. This, in turn, provides the conditions to allow the stator portion 9 to have a relatively greater extension in the circumferential direction and to extend around the entire surface of the inner cover 4 without being adversely affected to a substantial degree. the efficiency of the machine. This is advantageous for the embodiment of the stator portion 9, since the surface of the inner cover 4 can be largely and almost entirely treated. It is emphasized that the modalities described above and illustrated in the drawings are mainly considered as exemplifications. Accordingly, the invention can be realized in another way, either by maintaining the fundamental idea of the invention. In particular, it is pointed out that persons with experience in this field, after having received knowledge about the solution in accordance with the invention, will of course be able to develop different reconstructions of the exemplified modalities without departing from the scope of the protection of the invention. The patent. The stator slots 3 reveal in the figures substantially a flat bottom facing the surface of the inner cover 4 of the stator. The bottom of the grooves 3 can be presented in other forms, such as a rounded shape, which of course is within the scope of the claims according to the invention. In accordance with the illustrated embodiment, the stator 1 is constituted by two parts of the stator. However, it is also possible to design the stator as a single piece. In this case the stator conductors have to be driven into the slots in the axial direction of the stator. Stator portions 9, of course, can also be treated by a combination of two or more of the above treatments. For example, the first part of the stator 2 can be constructed from a plurality of adjacent plates. These plates are located in the planes that are
perpendicular to the axial direction of the stator and form a pack of plates. Of course, the treatment of the portions of the stator 9 can be made, within the scope of the claims according to the invention, before assembling the plates in the plate pack as well as after assembly. The treatment can also be carried out from the internal surface 4 of the stator as well as from the slots 3, or from both directions. The cylinder denotes that it must be considered in a wide sense and the term cylinder does not necessarily mean that the cylinder has a circle as the base surface. However, the base surface can be defined by means of any closed curve. The stator, shown in Fig. 1, has the shape of a circular cylinder. However, this alone is an example of a cylinder within the scope of the invention. The bridge denoted above relates to the portion of the stator which is located in the radial direction between each of the grooves 3 and the surface of the inner cover 4. The length of the bridge 5 in the direction of the circumference of the stator is substantially defined by the width of slot 3 in the direction of the circumference of the stator.
? * ai «t.t you? í 3. a ». ^^. fcWMfe-A.
It should be noted that the structure of the interior material in the stator portion influencing the flow 9 is different from the structure of the interior material in those portions of the first part of the stator surrounding the portion influencing the flow. It should also be noted that the portion influencing the flow advantageously has a structure of the inner material that also provides it in other directions with a magnetic resistance in the direction of the circumference is greater than the magnetic resistance in the radial direction in those portions of the stator that surrounds the portion that influences the flow. According to a preferred embodiment, the magnetic resistance in the portion that influences the flow is substantially the same in all directions. It should also be noted that those portions of the stator that surround the portion that influences the flow 9 generally have an interior material structure that provides substantially equal magnetic resistance in all directions. It is noted that in relation to this date, the best method known to the applicant to carry out the aforementioned invention, is that which is clear from the present invention.
idA i. * £, s.í *, i - * »« -
Claims (20)
- CLAIMS Having described the invention as above, the content of the following claims is claimed as property. A stator for a rotary electric machine including a first part of the stator essentially in the form of a hollow cylinder with a surface of the inner cover and with a plurality of grooves which are directed at least partially in the axial direction of the stator, which the stator conductors are projected, wherein each of the grooves in the radial direction is delimited towards the surface of the internal cover of the first part of the stator by means of a bridge, characterized in that the first part of the stator includes at least a portion that influences the flow, wherein at least one of the bridges is disposed at least partially and has an internal material structure that provides it with a magnetic resistance where at least in the direction of the circumference of the stator is greater than the magnetic resistance in the radial direction of the stator in those portions of the first part of the stator that surrounds the portion that infl uence the flow. 2. A stator according to claim 1, characterized in that a plurality of the portions that influence the flow mutually separated in t t - A.j * ^ j ^ m ¿í | g ^ ifc ^. the direction of the circumference of the stator between the grooves and the surface of the inner cover. 3. A stator according to claim 2, characterized in that each portion that influences the flow in the direction of the circumference of the stator has a substantially shorter extension than the distance between the two adjacent grooves. A stator according to any of the preceding claims, characterized in that the stator portion in the circumferential direction of the stator has essentially the same extent as one of the bridges. A stator according to any of the preceding claims, characterized in that the structure of the internal material in the portion influencing the flow is provided with a lower permeability than the permeability of those portions of the first part of the stator surrounding the portion that influences the flow. 6. A stator according to any of the preceding claims, characterized in that the structure of the internal material in the portion that influences the flow is provided with a greater magnetic resistance in the direction of the stator circumference than in the radial direction of the stator. 7. A stator according to any of the preceding claims, characterized in that the structure of the internal material in the portion influencing the flow has a magnetic domain structure that counteracts a magnetic flux through the portion that influences the flow in the direction of the stator circumference. A stator according to any of the preceding claims, characterized in that the portion influencing the flow extends over at least 50% of the radial extent of the bridge. A stator according to any of the preceding claims, characterized in that the bridges and the portions of the first stator part, which are located between the grooves, form a continuous part along the direction of the circumference. 10. A stator according to any of the preceding claims, characterized in that the first part of the stator has a surface of the outer cover and the grooves are open towards the surface of the cover. A stator according to claim 10, characterized in that the stator includes a second part, arranged on the outside with a radial direction and enclosing the first part of the stator. 12. A method for manufacturing a stator for a rotary electric machine, wherein a first part of the stator is made essentially in the form of a hollow cylinder with a surface of the inner cover and with a plurality of grooves that are directed at least partially in the axial direction of the statoreach one of these is delimited towards the surface of the internal cover of the first part of the stator by means of a bridge and which is projected to receive the stator conductors, characterized in that at least a portion of the stator, which is formed by less partially with at least one part of one of the bridges, it is treated in such a way that a structure of the internal material is obtained which is provided with a magnetic resistance, which at least in the direction of the circumference of the stator is greater than the resistance magnetic in the radial direction of the stator in those portions of the first part of the stator that surrounds the stator portion. A method according to claim 12, characterized in that the treatment is carried out on a plurality of the portions of the stator, which are mutually separated in the direction of the circumference of the stator and each of these is at least partially formed only by one of the bridges. Í. I3 • iifei ,. * Fc 14. A method according to claim 12 or 13, characterized in that the portion of each stator is treated in such a way that a structure of the internal material with a permeability substantially smaller than the permeability of those parts of the first part of the surrounding stator is obtained. the stator portion. A method according to any of the preceding claims 12-14, characterized in that each portion of the stator is treated in such a way that a structure of the internal material with a greater magnetic resistance in the direction of the circumference of the stator is obtained than in the radial direction of the stator. 16. A method according to any of the preceding claims 12-15, characterized in that each portion of the stator is heat treated. 17. A method according to claim 16, characterized in that extraneous elements are supplied to the mesh? The metal of each stator portion, respectively, in order to disrupt the regularity therein. 18. A method according to any of the preceding claims 12-17, characterized in that each portion of the stator is machined in such a way that the stator portion is plastically deformed. . ^^^^^ gk ^^^ i ^^^^^ ^ j ^^ g, 19. A method according to any of the preceding claims 12-18, characterized in that each portion of the stator of the surface is treated from the inner shell of the first stator portion. 20. A method according to any of the preceding claims 12-19, characterized in that each portion of the stator that is treated in the direction of the circumference of the stator, is substantially delimited by one of the bridges, respectively.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9901569A SE520528C2 (en) | 1999-05-03 | 1999-05-03 | Stator for a rotating electric machine and process for making it |
| PCT/SE2000/000831 WO2000067360A1 (en) | 1999-05-03 | 2000-05-02 | A stator for a rotary electric machine and a method for manufacturing thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| MXPA01010999A true MXPA01010999A (en) | 2002-06-04 |
Family
ID=20415421
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| MXPA01010999A MXPA01010999A (en) | 1999-05-03 | 2000-05-02 | STATOR FOR ROTATING ELECTRICAL MACHINE AND METHOD FOR THE MANUFACTURE OF THE SAME. |
Country Status (11)
| Country | Link |
|---|---|
| EP (1) | EP1175720A1 (en) |
| JP (1) | JP2002543755A (en) |
| AU (1) | AU4636500A (en) |
| BR (1) | BR0010240A (en) |
| CA (1) | CA2372753A1 (en) |
| CZ (1) | CZ20013888A3 (en) |
| MX (1) | MXPA01010999A (en) |
| PL (1) | PL351169A1 (en) |
| RU (1) | RU2001132585A (en) |
| SE (1) | SE520528C2 (en) |
| WO (1) | WO2000067360A1 (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2549655A1 (en) * | 2003-12-19 | 2005-07-07 | Hyun Laboratory Co., Ltd. | Assembling structure for generator |
| US10396615B2 (en) * | 2013-02-28 | 2019-08-27 | General Electric Company | Electric machine stator lamination with dual phase magnetic material |
| JP7102092B2 (en) * | 2015-10-05 | 2022-07-19 | ゼネラル・エレクトリック・カンパニイ | Generator stator stacking with two-phase magnetic material |
| FR3071369B1 (en) * | 2017-09-18 | 2023-09-01 | Ifp Energies Now | ELECTRIC MACHINE COMPRISING A STATOR PROVIDED WITH AN INTERNAL TUBULAR SLEEVE |
| FR3082374B1 (en) | 2018-06-07 | 2020-05-29 | Moteurs Leroy-Somer | ROTATING ELECTRIC MACHINE STATOR |
| FR3082375B1 (en) | 2018-06-07 | 2021-12-24 | Leroy Somer Moteurs | ROTATING ELECTRIC MACHINE STATOR |
| US11926880B2 (en) | 2021-04-21 | 2024-03-12 | General Electric Company | Fabrication method for a component having magnetic and non-magnetic dual phases |
| US11661646B2 (en) | 2021-04-21 | 2023-05-30 | General Electric Comapny | Dual phase magnetic material component and method of its formation |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58190245A (en) * | 1982-04-28 | 1983-11-07 | Matsushita Seiko Co Ltd | Manufacturing method of stator core of induction motor |
| JPS59136033A (en) * | 1983-01-24 | 1984-08-04 | Seiko Epson Corp | motor |
| JPS60144121A (en) * | 1984-01-05 | 1985-07-30 | Matsushita Electric Ind Co Ltd | Induction motor |
| JP2800226B2 (en) * | 1989-02-08 | 1998-09-21 | 松下電器産業株式会社 | Rotating machine stator core |
-
1999
- 1999-05-03 SE SE9901569A patent/SE520528C2/en not_active IP Right Cessation
-
2000
- 2000-05-02 JP JP2000616106A patent/JP2002543755A/en active Pending
- 2000-05-02 RU RU2001132585/09A patent/RU2001132585A/en not_active Application Discontinuation
- 2000-05-02 CA CA002372753A patent/CA2372753A1/en not_active Abandoned
- 2000-05-02 PL PL00351169A patent/PL351169A1/en unknown
- 2000-05-02 MX MXPA01010999A patent/MXPA01010999A/en not_active Application Discontinuation
- 2000-05-02 WO PCT/SE2000/000831 patent/WO2000067360A1/en not_active Application Discontinuation
- 2000-05-02 EP EP00928078A patent/EP1175720A1/en not_active Withdrawn
- 2000-05-02 CZ CZ20013888A patent/CZ20013888A3/en unknown
- 2000-05-02 AU AU46365/00A patent/AU4636500A/en not_active Abandoned
- 2000-05-02 BR BR0010240-7A patent/BR0010240A/en not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| RU2001132585A (en) | 2003-07-20 |
| BR0010240A (en) | 2002-03-19 |
| SE9901569L (en) | 2000-11-04 |
| PL351169A1 (en) | 2003-03-24 |
| JP2002543755A (en) | 2002-12-17 |
| CZ20013888A3 (en) | 2002-04-17 |
| CA2372753A1 (en) | 2000-11-09 |
| EP1175720A1 (en) | 2002-01-30 |
| SE9901569D0 (en) | 1999-05-03 |
| SE520528C2 (en) | 2003-07-22 |
| AU4636500A (en) | 2000-11-17 |
| WO2000067360A1 (en) | 2000-11-09 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FA | Abandonment or withdrawal |