Cable guide for connecting phase lines to a wind turbine generator rotor, wind turbine generator rotor, wind turbine generator, use of a cable guide, phase line repair method, and, data aggregation

Description

Cable guide for connecting phase lines to a rotor of a wind turbine generator, rotor for a wind turbine generator, generator for a wind turbine, use of a cable guide, method for repairing phase lines, and, data cluster description.

[001] The invention relates to a cable guide, with the aid of which phase lines can be connected to the windings of a rotor for a wind turbine generator, and to a rotor and a generator having such a cable guide. The invention further relates to the use of such a cable guide, to a method for repairing a rotor with the aid of such a cable guide, and to a data set for the additive manufacturing and / or simulation of such a cable guide.

[002] Wind turbines for industrial electricity generation from wind energy may have a generator whose rotor has windings that are electrically connected by means of phase lines. The phase lines may pass through a cavity in a mechanical rotor shaft in order to be guided to the rotor windings. To secure the phase lines, the remaining intermediate spaces in the cavity are filled with a filler material, with the mechanical rotor shaft being vertically aligned, the filler material being poured in liquid form into the cavity of the vertically aligned mechanical rotor shaft and subsequently cured. However, if damage occurs to the rotor, particularly to the phase lines, it is usually necessary to remove the entire rotor, resulting in long periods of wind turbine downtime due to repairs.

[003] Document DK 177956 B1 describes a cable guide for a wind turbine, in which a splitting body is inserted into a tubular main mechanical shaft, which is connected to a wind rotor on the side of Petition 870260074508, dated 07 / 27 / 2026, page 11 / 42 / 24 wind and a generator rotor, which can be passed in order to allow the reading of sensors on the wind turbine rotor blades with the aid of electrical cables and allows the activation of a blade angle setting control (rotation control).

[004] Document CN 155 833 441 A describes a wind turbine cable guide, in which a curved copper rod, connected to a phase of a generator, can be connected, with the aid of a splitting body, by means of a hollow tube, to a slip ring provided on one side facing away from the wind.

[005] The objective of the invention is to provide measures that allow for an electrically connectable rotor that is easy to repair.

[006] The objective is achieved by means of a cable guide having the features of claim 1, a rotor having the features of claim 10, a generator having the features of claim 12, a use having the features of claim 13, a method having the features of claim 14, and a data cluster having the features of claim 15. Preferred refinements, which may, in each case, individually or in combination, represent an aspect of the invention, are specified in the dependent claims and in the description below. If a feature is presented in combination with another feature, this serves only for simplified illustration of the invention and is not intended in any way to imply that this feature cannot also be a development of the invention without the other feature, wherein the scope of protection of the invention is defined by the independent claims.

[007] One aspect of the invention relates to a cable guide for connecting phase lines to a rotor of a wind turbine generator, having a hollow tube for axial insertion into a mechanical shaft of the rotor, a dividing body provided inside the hollow tube, wherein the dividing body, together with the hollow tube, delimits cross-sections of passage that Petition 870260074508, dated 07 / 27 / 2026, page 12 / 42 / 24 are separated from each other, at least in a large part, and the respective cross-section of the passage is dimensioned for the passage of, at most, one of the phase lines. In particular, precisely one of the phase lines is provided in the cross-section of the respective passage.

[008] The cable guide can be inserted axially, as a common structural unit, into a cavity of a rotor mechanical shaft. In this case, the hollow tube can be dimensioned in such a way that the cable guide fills, to the greatest extent possible, the axial cross-section of the cavity in the rotor mechanical shaft. In particular, a clearance fit is formed between the hollow tube and an inner side of the rotor mechanical shaft delimiting the cavity. With the aid of the dividing body, which preferably has substantially the same axial extension as that of the hollow tube, the radial interior of the hollow tube can be divided into different partial volumes, each of which has the passage cross-section associated with the respectively assigned phase line. The passage cross-section is adapted, in particular, to the cross-section of the assigned phase line, so that the respective phase line can be threaded, in particular with a clearance fit, into the passage cross-section.The cross-sections of the passage are preferably formed so as to be uniformly distributed along a common radius in the circumferential direction. The respective cross-section of the passage may be delimited, in part, by the splitting body and, in part, by the hollow tube. With the aid of the cross-section of the passage, respectively delimited between the hollow tube and the splitting body, the respective phase line may be specified in a defined manner in its radial relative position within the mechanical rotor shaft, while the axial relative position may be specified by means of the insertion depth of the hollow tube and / or the splitting body, in particular by means of an indirect or direct stop against a stop formed by the mechanical rotor shaft. As a result, the phase lines in the cross-section of the passage are respectively... Petition 870260074508, dated 07 / 27 / 2026, page 13 / 42 / 24 assigned can be easily positioned at a sufficient distance from each other, so that an undesirable electromagnetic interaction between the phase lines, which could lead to reactive currents, can be avoided or at least reduced. As an example, the cable guide can be pressed in the axial direction and / or held against rotation in the circumferential direction with the aid of a cover element, so that the cable guide can be mounted in the cavity of the mechanical rotor shaft in a particularly simple way and preferably secured in such a way as to be fixed in terms of movement. This, in turn, allows saving on the application of a liquid and curable filling material.

[009] If it becomes necessary to replace a phase line after a fault, for example, a cable fire, the cable guide can be removed and the faulty phase line, preferably all phase lines, can be replaced, in each case, with a functional phase line, without it being necessary, for this purpose, to first remove the cured filler material from the rotor mechanical shaft cavity. It is also not necessary to pour curable filler material into the cavity after the phase line has been replaced and, for this purpose, remove the rotor together with the rotor mechanical shaft and place them in a vertical position. Instead, the cable guide with the replaced phase line(s) can still be reinserted into the rotor mechanical shaft, in place, inside the wind turbine nacelle.The downtime periods of wind turbines required for repairing the faulty phase line can thus be significantly shortened and, in particular, minimized. Furthermore, simple and quick modernization of rotor mechanical shafts with cured filler material is made possible by means of cable guides, by cleaning the cavity of the rotor mechanical shaft when the rotor mechanical shaft is oriented substantially horizontally, and by removing the filler material so that the cable guide can... Petition 870260074508, dated 07 / 27 / 2026, page 14 / 42 / 24 subsequently, to be inserted axially into the rotor mechanical shaft cavity without intermediate removal of the rotor and rotor mechanical shaft. By positioning the phase lines in the respectively associated through-section, so that they are predefined in a defined manner, the relative position of the phase lines on the rotor mechanical shaft can be predefined in a way that facilitates assembly and removal, even without cured filler material, thus making possible an electrically connectable rotor that is easy to repair.

[0010] The cable guide may have a substantially cylindrical shape, on whose axial sides the phase lines may project outwards from the respectively associated passage cross-section. On the axial side of the cable guide facing the rotor windings, the respective phase line may be radially guided outwards from the rotor mechanical shaft by means of an angled ramp and / or opening and connected to the associated winding. The cable guide, without the phase lines, may form a structural unit that is installed in the cavity of the rotor mechanical shaft before the respective phase lines are subsequently mounted and passed through the cable guide, the phase lines, in particular, being inserted into the cable guide with a clearance adjustment.Alternatively, the phase lines, as part of the cable guide, together with the remaining cable guide, can form a common structural unit that is installed as a whole in the cavity of the rotor mechanical shaft, the phase lines, in particular, being inserted into the cable guide by press-fit.

[0011] The hollow tube of the cable guide can rest in the axial direction, for example, against a stop of the rotor mechanical shaft and / or another previously inserted cable guide, in order to be positioned at a defined insertion depth in the cavity of the rotor mechanical shaft. Preferably, the hollow tube is received in the cavity of the rotor mechanical shaft in such a way as to be held against rotation by means of a tab that extends in a Petition 870260074508, dated 07 / 27 / 2026, page 15 / 42 / 24 groove. The hollow tube is produced, in particular, from an electrically insulating plastic material that is preferably stable at high temperatures, such as PTFE, PEEK, PEK, PVDF or PFA. Particularly preferably, the hollow tube can act as an electrical insulator between the phase lines and the mechanical rotor shaft, in particular, metallic, so that voltage breakdowns can be reliably avoided. If necessary, the hollow tube can be grounded by means of a grounding connection. Furthermore, it is possible that the hollow tube provides electromagnetic shielding for the phase lines, as a result of which leakage currents in the mechanical rotor shaft can be avoided.

[0012] The splitting body can be formed separately from the hollow tube. For example, the splitting body is inserted into the hollow tube and / or fixed in a non-rotational manner to the hollow tube, with the fixing being able to be carried out by a friction fit, for example by tightening, and / or by a form fit, for example by fitting and / or screwing. The splitting body can divide the cross-section, which is completely or partially delimited by the hollow tube, into through cross-sections. With a given number of phase lines, a given cross-section of the phase lines and a given inner diameter of the hollow tube, it is possible to produce a suitable shape of the splitting body, in which the phase lines can be positioned as far as possible radially outwards and as far as possible from each other in the circumferential direction.The splitting body is produced, in particular, from an electrically insulating plastic material that is preferably stable at high temperatures, such as PTFE, PEEK, PEK, PVDF or PFA. Particularly preferably, the splitting body can act as an electrical insulator between phase lines that are adjacent in the circumferential direction, so that it is possible to reliably avoid voltage breakdowns and reciprocally induced leakage and / or reactive currents. If necessary, the splitting body can be grounded through a medium. Petition 870260074508, dated 07 / 27 / 2026, page 16 / 42 / 24 of a grounding connection. Furthermore, it is possible that the splitter body provides electromagnetic shielding for the phase lines.

[0013] The passage cross-section is specifically dimensioned so that only a maximum of one phase line can pass through it. This avoids the particularly close positioning of two phase lines relative to each other, which could lead to mutual interference due to induction effects. The passage cross-section is preferably constant in the axial direction or runs conically in the axial direction. By means of the conical profile, it is possible to thread the associated phase line into the passage cross-section with a clearance fit and, by means of the constriction of the passage cross-section, to predefine, to a greater extent, the positioning within the cable guide and / or, finally, to obtain a friction fit of the phase line within the cable guide.

[0014] The respective phase line is designed to transmit an electric current and an electric power to which the respective rotor winding connected to the phase line is subjected. The phase line may have an electrically conductive core, which is produced, in particular, from copper, the core being housed in an electrically insulating sheath, in particular a plastic sheath, a heat-shrinkable tube and / or a coating. The respective phase line may be connected to the associated winding by means of a suitable connection technique, with, in particular, two different phase lines being connected to the two ends of the winding under consideration. More specifically, three windings are provided in the rotor and six phase lines or an integer multiple thereof are provided in the cable guide. At one end pointing away from the windings, it is possible that the phase line is electrically connected by means of a slip ring.If, during the repair of a fault, it is determined that a thermal overload has occurred in one of the phase lines, it is preferable to replace all phase lines, since the other lines... Petition 870260074508, dated 07 / 27 / 2026, page 17 / 42 / 24 phase may also already be thermally damaged, and an electrical discharge could occur.

[0015] The rotor, which may be electrically connected by means of the cable guide, may be part of a three-phase machine, preferably a doubly powered asynchronous machine. For this purpose, the rotor has a suitable number of windings to which the phase lines of the cable guide are electrically connected. The windings may be connected, by means of a rotor carrier, to the rotor mechanical shaft, which is formed separately or in an integrated manner.

[0016] The rotor shaft may, in particular, have a cylindrical cavity into which the cable guide may be inserted axially. In this case, it is possible that the cavity extends only over a portion of the axial length of the rotor shaft. The rotor shaft preferably has angled ramps or openings that communicate with the cavity and through which the respective phase line may be passed radially outwards through the rotor shaft in order to fix the phase line to the associated rotor winding. In a common axial region with the cavity, the rotor shaft may be mounted on a radially external lateral surface outside the cavity, in particular with the aim of maintaining as constant a radial and / or air gap distance as possible between the rotor and the stator, even at high rotational speeds.

[0017] The generator may have a stator that interacts electromagnetically with the rotor and in which electric current may be induced, which may be supplied as electrical energy to a battery or to the electrical grid. The generator is designed, in particular, as a doubly fed asynchronous machine. The generator is preferably configured as a wind turbine generator and is sized for the generation of industrial power from wind energy in a wind turbine.

[0018] Industrial wind turbines are designed primarily Petition 870260074508, dated 07 / 27 / 2026, page 18 / 42 / 24, to generate energy from wind power, wherein the electrical energy derived from wind power can be introduced, in particular, into a public power grid, in order to be able to supply energy to consumers with regeneratively generated energy. A wind power transmission system designed for an industrial wind turbine is configured, in particular, for an output greater than 1.0 MW, preferably greater than 5.0 MW and, preferably, more particularly, greater than 7.5 MW, and is designed to be suitably robust and of large volume. Preferably, a wind turbine drive train and, consequently, also a generator centerline, which coincides with a geometric axis of rotation of the generator rotor, is slightly angled relative to the horizontal, for example, between 5° and 12°.

[0019] A “substantially horizontal orientation” therefore means not only an orientation that is exactly horizontal perpendicular to the vertical, but also an orientation of the generator in accordance with the slight angulation of wind turbines. An axial direction and a radial direction relate to the possibly slightly angled centerline, and to the geometric axis of rotation of the generator or rotor.

[0020] In particular, the hollow tube is composed of at least two separate casing parts, wherein the casing parts are fixed to each other and / or to the splitting body. As a result, the hollow tube can be disassembled into casing parts and reassembled. As a result, it is possible to insert the respective phase lines radially, from the outside, into an intermediate space of the splitting body delimiting the respective cross-section of passage and subsequently retain, in a captive manner, the phase line in the radial direction by means of the adjustment of the associated casing part. Preferably, the respective phase line can be pressed between the splitting body and the casing part and thus fixed with a friction fit, without a curable filler material having to be poured. Petition 870260074508, dated 27 / 07 / 2026, p. 19 / 42 / 24 for this purpose. The casing parts can be fixed to the splitting body and / or to each other, so that, in the fully assembled state, they form the hollow tube. The number of phase lines can correspond to the number of casing parts or to an integer multiple. Preferably, a single casing part can simultaneously cover two or three phase lines and, in particular, press them together.

[0021] Preferably, the housing parts are radially pressed inward against the splitting body with the aid of a connecting means. The connecting means may exert a radially inward contact pressure force on at least one housing part, as a result of which the radial extension of the cable guide may be reduced to the minimum required. In particular, at least one phase line may be pressed with a friction fit, with the aid of the contact pressure force applied by the connecting means. In this case, it is possible that a separation gap remains between the housing part and the splitting body. Preferably, the housing part abuts the splitting body without a separation gap, so as to avoid excessive mechanical loads and / or deformations on the phase line, which could lead to damage to the phase line.

[0022] Particularly preferably, the housing parts have a radially open receiving groove to receive the connecting means, wherein, in particular, the connecting means are received completely recessed in the radial direction in the receiving groove. As a result, the connecting means can exert a contact pressure force on the housing part by means of a contact surface, with a radial installation space requirement of the cable guide not being increased by at least the partially recessed receiver of the connecting means in the receiving groove. The receiving groove may be provided, for example, only in a partial region in the circumferential direction, the receiving groove preferably being, Petition 870260074508, dated 07 / 27 / 2026, page 20 / 42 / 24 configured to run completely around at least 360° in the circumferential direction. In a circumferential angle range located between the center points of two phase lines running in the circumferential direction, the receiving groove may have a greater radial depth than in the radial extent of the center points of the phase lines, since a corresponding amount of material from the split body and / or carcass portion can be removed at that location without compromising the phase lines.

[0023] In particular, the connecting means are in the form of a strip, in particular, in the form of a cable clamp, strap and / or wiring. The strip-shaped connecting means can be interconnected at its ends and thus exert a radially inward-directed contact pressure force along the entire circumference. End regions that are not needed for connecting the ends of the strip-shaped connecting means can be cut off. A node of the strip-shaped connecting means and / or a locking connection of the cable clamp-shaped connecting means can be recessed into a deeper region of the receiving groove, while a shallower depth of the receiving groove is sufficient for the remaining region of the strip-shaped connecting means.

[0024] The shell parts preferably rest on the dividing body in the circumferential direction. This means that the shell parts running in the circumferential direction are not directly connected to each other, but only indirectly through a part of the dividing body formed between them. Consequently, the hollow tube is only partially assembled by means of the shell parts, with a smaller part of the outer lateral surface facing radially outwards from the hollow tube being formed by the dividing body. The relative radial position of the shell part can thus be more easily determined by pressing it against the line of Petition 870260074508, dated 07 / 27 / 2026, page 21 / 42 / 24 phase provided in the cross-section of passage, and not by means of a tangential impact against the next casing part in the circumferential direction. Furthermore, the casing part can be easily fixed to the splitting body by means of a fastening device that extends with a portion in the radial direction, while simultaneously pressing the associated phase line.

[0025] In a particularly preferable form, the splitting body has a central region, in particular annular, and separating webs that project radially outward from the central region. The central region can be dimensioned in such a way that the phase lines provided in the respective cross-sections of passage can be pushed radially outward as much as possible. If the central region is solid, it can withstand particularly high contact pressure forces. If the central region is hollow, in particular if it has the shape of a (circular) ring, the use of material for the splitting body can be economically limited to the extent necessary to withstand the anticipated forces. The separating webs can have a thickness that is suitable in the tangential direction in order to space the phase lines as much as possible from each other in the circumferential direction.In particular, the thickness of the material of the separating webs may be such that a fastening means provided for securing the housing part to the separating web may interact with the separating web, for example, it may be screwed into place.

[0026] More specifically, the phase line is fixed, in particular, foamed in place, in the associated through-section. The fixation can be effected with a friction fit by pressing the phase line between the hollow tube and the splitting body. However, it is also possible to provide a form fixation or fit, for example, by filling with foam a remaining void in the through-section of the phase line. In the case of a defect in one of the phase lines, only the through-section of the affected phase line needs to be vacated for the Petition 870260074508, dated 07 / 27 / 2026, page 22 / 42 / 24 replacement of the affected phase line, but not the entire cross-section of the rotor mechanical shaft cavity, nor all the cross-sections of the passage that are separated from each other.

[0027] Preferably, the respective phase line has a contact connection that is pressed, in particular by crimping, at least at one end. As a result, an economical fastening technique for the phase line with winding and / or with a slip ring can be implemented. If damage has occurred to the phase line as a result of crimping, said phase line can be easily replaced after the corresponding phase line test and / or after a fault, for example, a cable fire has occurred.

[0028] An additional aspect relates to a rotor for a wind turbine generator, having a rotor body having at least one winding, a rotor mechanical shaft connected to the rotor body, wherein the rotor mechanical shaft has a cavity that is open towards an axial side, and a cable guide that can be designed and developed as described above and that is inserted axially into the cavity of the rotor mechanical shaft, wherein the phase lines are radially guided outwards by means of the rotor mechanical shaft and are connected to the respective winding. The rotor can be designed and developed, in particular, as described above.By positioning the phase lines in the respectively associated cross-sectional passage, so as to be specified in a defined manner, the relative position of the phase lines on the rotor's mechanical shaft can be specified in a way that facilitates assembly and removal, even without cured filler material, thus making possible an electrically connectable rotor that is easy to repair.

[0029] In a particularly preferable form, at least two separately insertable axial cable guides are provided, arranged one behind the other in the axial direction in the mechanical shaft cavity. Petition 870260074508, dated 27 / 07 / 2026, p. 23 / 42 / 24 of the rotor, the cable guides sharing the same phase lines. Thus, in the case of a rotor mechanical shaft designed to be particularly long in the axial direction and having a correspondingly long cavity, it is possible to insert the cable guide in each case, section by section, into the cavity. In this way, it is possible to avoid the use of a single particularly long cable guide, which simplifies handling. For example, the hollow tube and the associated splitting body can be installed first as a pre-assembled structural unit, before the phase lines are passed through these structural units arranged one behind the other in the axial direction.However, it is also possible to first insert the entire cable guide into the rotor's mechanical shaft and connect the phase lines projecting from the already inserted cable guide to the hollow tube and the splitting body of the next cable guide, which is then similarly inserted into the rotor's mechanical shaft, and so on.

[0030] Another aspect relates to a generator, in particular a double-fed asynchronous machine, for a wind turbine, having a stator, a rotor which can be designed and developed as described above and which interacts with the stator, and a contact unit, in particular in the form of a slip ring arrangement, for making electrical contact with the ends of the phase lines pointing away from the rotor body. The generator can be designed and developed, in particular, as described above. By positioning the phase lines in the respectively associated passage cross-section, so as to be specified in a definite manner, the relative position of the phase lines on the rotor mechanical shaft of the rotor can be specified in a way that facilitates assembly and removal, even without cured filler material, thus making possible an electrically connectable rotor that is easy to repair for a generator.

[0031] Another aspect relates to the use of a cable guide, which Petition 870260074508, dated 07 / 27 / 2026, page 24 / 42 / 24, can be designed and developed as described above, to repair phase lines damaged by cable fire from a generator rotor for a wind turbine. The use can be designed and developed, in particular, as described above. The replacement of a phase line damaged by a cable fire can thus be carried out quickly and easily. By positioning the phase lines in the respectively associated passage cross-section, so that they are specified in a defined way, the relative position of the phase lines on the rotor's mechanical shaft can be specified in a way that facilitates assembly and removal, even without cured filler material, thus making it possible to use a cable guide to repair an electrically connectable rotor that is easy to repair.

[0032] Another aspect relates to a method for repairing phase lines, in particular those damaged by cable fire, from a generator rotor to a wind turbine, in which the damaged phase line is separated from the rest of the rotor, the damaged phase line is removed from a rotor mechanical shaft of the rotor, while the rotor mechanical shaft remains in a substantially horizontal orientation, and a cable guide, which can be designed and developed as described above, is subsequently inserted into the rotor mechanical shaft in the axial direction, while the rotor mechanical shaft remains in a substantially horizontal orientation, in particular in order to obtain the rotor, which can be designed and developed as described above. The method can be designed and developed, in particular, as described above.In particular, it can be anticipated that the mechanical rotor shaft cavity will be completely or partially unobstructed and / or cleaned of residues caused, in particular, by a cured filler material. Cleaning of the cavity can be achieved mechanically, particularly by machining, and / or chemically, particularly with the aid of a solvent. When positioning the phase lines in... Petition 870260074508, dated 07 / 27 / 2026, page 25 / 42 / 24 cross-section of passage respectively associated, so as to be specified in a defined manner, the relative position of the phase lines on the mechanical shaft of the rotor can be specified in a way that facilitates assembly and removal, even without cured filler material, thus making possible a repair method for an electrically connectable rotor, which method is easy to repair.

[0033] An additional aspect refers to a data cluster comprising data packets that are combined into a common file or distributed across different files and are intended to represent the three-dimensional design and / or interactions of all constituent parts provided in the cable guide, which may be designed and developed as described above, the data packets being prepared, when processed by a data processing device to operate a machine tool for the additive manufacturing of devices, in order to additively produce the constituent parts of the cable guide, in particular by means of 3D printing, and / or, when processed by a data processing device to perform a technical simulation, to perform a simulation of the operation of the cable guide and output simulation results generated herein for further use,In particular, with the aim of providing a verification of fatigue resistance as a function of variable loads and / or variable thermal load and, if appropriate, comparing it with measurement data determined in an apparatus according to the invention that has been produced in reality and / or in a prototype of the apparatus according to the invention. The data packets of the data cluster are specially adapted to the configuration, according to the invention, of the respective apparatus described above, according to the invention, in order to be able to adequately represent the interaction, according to the invention, of the constituent parts of the apparatus, according to the invention, during processing in the data processing device. In particular, the data packets, Petition 870260074508, dated 07 / 27 / 2026, p. 26 / 42 / 24 can be stored in a spatially distributed manner, but be adapted to each other in such a way that, if all the data packets are gathered in a common data processing device, the data cluster thus gathered provides all the data necessary for additive manufacturing and / or a technical simulation with the aid of the data processing device for the apparatus according to the invention. For example, the data packets are each separate parts of a data library, which are combined to form the data cluster and are adapted to each other in terms of their relative dimensions and / or in terms of absolute dimensions and / or material properties, in a manner corresponding to the respective apparatus according to the invention.The data cluster can represent a virtual embodiment of the respective device, according to the invention, in the manner of what is called a "digital twin," which allows for virtual investigation in the form of a simulation or a real objectification through an additive manufacturing process. This digital twin is presented, for example, in document US 2017 / 286572 A1, whose descriptive contents are considered herein to be part of the invention.

[0034] When the machine tool's data processing device processes the data cluster, the apparatus according to the invention is produced in such a way that, after the data cluster has been processed in the data processing device, the apparatus according to the invention is obtained, at least in prototype form. In particular, a data packet can, in each case, represent a separate constituent part of the respective associated apparatus according to the invention, and therefore the individual constituent parts can be easily assembled, in a real and / or virtual way, in their relative position and / or relative mobility, in order to perform the interactions that are essential to the invention. In particular, it is possible, with the aid of the respective data packets, to generate the Petition 870260074508, dated 07 / 27 / 2026, page 27 / 42 / 24 different constituent parts of the respective device separately and, optionally, from different materials, by means of additive manufacturing, and subsequently assembling them to form a prototype of the respective device. The division of the data from the data cluster into different data packages thus enables, in a simple way, a sequential additive manufacturing of constituent parts, which are movable in relation to each other, of the respective device in the form of a parts kit, which is prepared in such a way as to be assembled only as necessary for the interaction, according to the invention, of the constituent parts of the prototype to solve the problem addressed by the invention.

[0035] Furthermore, or alternatively, it is possible, using the data packets from the data cluster, in a virtual environment during a technical simulation, to calculate and / or predict the individual constituent parts of the respective apparatus, their interactions, the physical state and / or the alteration of physical parameters depending on different boundary conditions and / or over time of the associated apparatus according to the invention, and to continue using them to verify whether the apparatus according to the invention is sufficiently suitable for the intended use based on the hypothetical configuration and taking into account the hypothetically simulated influences. When the data cluster is processed by a data processing device representing the simulation environment, it is possible to be able to investigate the behavior of the apparatus according to the invention, taking into account, in particular, the varying boundary conditions.This allows, for example, investigating the effects of centrifugal force on the individual constituent parts of the apparatus according to the invention, as a function of different static and / or dynamic loads and / or different operating temperatures, and such simulation results can be incorporated into establishing a fatigue resistance verification. Preferably, the simulation results obtained afterwards... Petition 870260074508, dated 07 / 27 / 2026, page 28 / 42 / 24 The processing of the data cluster in the data processing device for the simulation environment is stored in order to compare it with measurement data determined in an apparatus actually produced according to the invention and / or in a prototype of the apparatus according to the invention. This allows evaluating the quality of the simulation results obtained with the aid of the data cluster and / or, in particular in the case of particularly sharp deviations, identifying measurement errors and / or an erroneous measurement. This simplifies and improves the non-destructive quality control of the apparatus according to the invention.

[0036] Data aggregation allows for the economical production of prototypes and / or computer-based simulations to study the operation of the device under consideration, identify problems in the specific use case, and find improvements. The solution to the problem addressed by the invention can be verified easily and economically using data aggregation.

[0037] The invention will now be explained by way of example, with reference to the accompanying drawings, based on preferred illustrative embodiments, wherein the features presented below may, either individually or in combination, represent an aspect of the invention. If a feature is presented in combination with another feature in the specific illustrative embodiment, this serves only to illustrate the invention in a simplified manner using the illustrative embodiment and is in no way intended to imply that this feature cannot also be a development of the invention without the other feature, wherein the scope of protection of the invention is defined by the independent claims. In the drawings: Figure 1 shows a schematic perspective view of a wind turbine. Figure 2 shows a schematic perspective view. Petition 870260074508, dated 07 / 27 / 2026, p. 29 / 42 / 24 partially sectioned of a mechanical shaft of a wind turbine rotor of Figure 1 with a cable guide installed according to the invention, Figure 3: shows a schematic perspective view partially sectioned of a mechanical shaft of a wind turbine rotor of Figure 1, with two cable guides installed according to the invention, Figure 4: shows a schematic sectioned view of an embodiment of a cable guide according to the invention, and Figure 5: shows a schematic perspective view of the cable guide of Figure 4.

[0038] The industrial wind turbine 10, shown in Figure 1, can be used for generating electrical energy from wind energy. For this purpose, the wind turbine 10 has a wind rotor 12 which, driven by the wind, can be set in rotation by the wind. The wind rotor 12 is coupled to a drive train 14. Preferably, the drive train 14 is oriented at an angle of 5° to 12° relative to a horizontal. The wind rotor 12 is connected to a wind rotor mechanical shaft 16, which can be coupled to the drive train 14, in particular to a transmission 18, in order to convert the torque introduced through the wind rotor 12 and the wind rotor mechanical shaft 16. The torque converted in the transmission 18 is supplied to an electrical machine 20, which is operated in generator mode and which is preferably configured as a double-fed asynchronous machine.Alternatively, the mechanical shaft of wind rotor 16 of wind rotor 12 can be directly coupled, i.e., without speed conversion, to the electric machine 20, without an interconnected transmission 18. The electrical energy generated by the electric machine 20 can be supplied to a rechargeable battery and / or to an electrical grid. In the exemplary embodiment illustrated, the drive train 14 is completely housed in a nacelle 22, which is fixed to a free upper end of a self-contained tower 24. Petition 870260074508, dated 07 / 27 / 2026, page 30 / 42 / 24

[0039] The electric machine 20 has a stationary stator and a rotor that rotates relative to the stator and can interact electromagnetically with the stator. In principle, it is possible for the rotor to have permanent magnets that interact with the stator electromagnets, wherein in the present exemplary embodiment, the rotor has different windings through which an electric current can flow. In order to supply an electric current to the rotor windings, the rotor of the electric machine 20 may have a mechanical rotor shaft 26, which is illustrated in Figure 2 and has a substantially cylindrical cavity 30, which is open at one axial end 28. The openings 34, which run at an angle relative to the geometric axis of rotation 32 of the rotor and which, in particular, are in the form of oblique holes, extend from the cavity 30.This allows guiding the phase lines 36 through the cavity 30 and associated opening 34 respectively, in order to be able to connect the windings by means of the phase lines 36. For this purpose, the phase lines 36 may have terminals 38, 40 fixed at their ends by means of crimping. One terminal 38 may be fixed to the winding and the other terminal 40 may be fixed to a slip ring, not shown. As the phase lines 36 are guided by the cavity 30 inside the rotor mechanical shaft 26, the bearings may act on a radially external lateral surface 42 of the rotor mechanical shaft 26, in order to mount the rotor mechanical shaft 26 and the rotor connected to the rotor mechanical shaft 26.

[0040] As can be seen in Figure 2, the phase lines 36 are not fixed within the cavity 30 by means of a cured filling material poured into the cavity 30 of the mechanical rotor shaft 26, but are positioned in a definite manner with the aid of a cable guide 44 inserted axially into the cavity 30. As illustrated in Figure 3, it is also possible to provide two or more cable guides 44, axially one behind the other, in the cavity 30 of the mechanical rotor shaft 26, the plurality of cable guides 44 being able to share the same phase lines 36. Petition 870260074508, dated 07 / 27 / 2026, page 31 / 42 / 24

[0041] Several geometric variants are possible for the configuration of the cable guide 44. For example, the cable guide 44 has a cylindrical hollow tube 46, into which a splitting body 48 is inserted axially with a clearance fit or, alternatively, with a pressure fit. The splitting body 48 may have, for example, an annular central region 50, from which separating webs 52, which are uniformly distributed in the circumferential direction, extend in the radial direction. In each case, between two separating webs 52 running in the circumferential direction, a volume with a through cross-section 54, which is preferably constant or runs conically in the axial direction, is left free between the hollow tube 46 and the splitting body 48, through whose through cross-section only a maximum of one phase line 36 may be passed.

[0042] However, as shown in Figure 4, in a particularly preferred embodiment, the hollow tube 46 may be composed of two or more separate casing parts 56. In the illustrated exemplary embodiment, it is provided, in particular, that the casing parts 56 do not touch each other in the tangential direction, but that, on the contrary, they are separated from each other by means of a separating web 52 of the dividing body 48, said separating web reaching to an external lateral surface 58. This allows the phase lines 36 to be radially inserted from the outside into the respectively associated through-section 54 and, subsequently, that the associated casing part 56 be fixed to the dividing body 48 in order to, preferably, press the phase line 36 into the through-section 54 so as to fix it in terms of movement.

[0043] As illustrated in Figure 5, the cable guide 44 illustrated in Figure 4 may, in particular, have a receiving groove 60, which is provided on the outer lateral surface 58 and is formed, in particular, so as to be closed annularly, in a surrounding manner in the direction Petition 870260074508, dated 07 / 27 / 2026, page 32 / 42 / 24 circumferential. A strip-shaped connecting means may be received, completely or partially, in a recessed manner in this receiving groove 60. The strip-shaped connecting means may be designed, for example, as a cable clamp, metal tape, cord or similar. The strip-shaped connecting means may be interconnected at their ends and thus impart a radially inward contact pressure force on the cable guide 44, in particular in order to press the phase lines 36 between the split body 48 and the housing parts 56 of the hollow tube 46, so as to fix them in terms of movement. The receiving groove 60 may preferably have at least one partially recessed region in the circumferential direction, in which a connection technique for connecting the ends of the strip-shaped connecting medium may be received in a completely recessed manner.For example, a locking connection of a cable clamp may be received in a recessed manner in the partially recessed region of the receiving groove 60, with, in particular, a portion of the cable clamp projecting from the locking connection being cut off.

[0044] If a repair is necessary, in particular the replacement of a phase line 36 damaged by a cable fire, the phase lines 36 can be removed together with at least one cable guide 44 from the cavity 30 of the rotor mechanical shaft 26. After the replacement, in particular of all the phase lines 36, and after the insertion of at least one cable guide 44 or in conjunction with at least one cable guide 44, the respective phase line 36 can be reinserted into the cavity 30 of the rotor mechanical shaft 26 and connected. In this case, it is not necessary to remove the rotor from the electric machine 20. Instead, the rotor mechanical shaft 26 can remain in its substantially horizontal position.

[0045] If, in a repair situation, the shaft cavity 30 Petition 870260074508, dated 07 / 27 / 2026, page 33 / 42 / 24 if the mechanical rotor shaft 26 has been filled with a cured filler material, the filler material remaining in the cavity 30 after the phase lines 36 have been removed may be removed mechanically and / or chemically, and the cavity 30 may be cleaned. In this case, it is not necessary to remove the rotor from the electric machine 20. Instead, the mechanical rotor shaft 26 may remain in its substantially horizontal position. After removing the filler material and replacing the defective phase line 36 or all phase lines 36, the phase lines 36 may be installed and reconnected in the cavity 30 of the mechanical rotor shaft 26 with the aid of at least one cable guide 44.

Claims

1. Cable guide (44) for connecting phase lines (36) to a rotor of a generator (20) of a wind turbine (10), characterized in that it has a hollow tube (46) for axial insertion into a mechanical rotor shaft (26) of the rotor, a splitting body (48) provided in the hollow tube (46), wherein the splitting body (48), together with the hollow tube (46), delimits cross-sections of passage (54) which are separated from each other, at least by a large extent, and the respective cross-section of passage (54) is dimensioned for the passage of, at most, one of the phase lines (36).

2. Cable guide (44) according to claim 1, characterized in that the hollow tube (46) is composed of at least two separate housing parts (56), wherein the housing parts (56) are fixed to each other and / or to the splitting body (48).

3. Cable guide (44) according to claim 2, characterized in that the housing parts (56) are radially pressed inward against the splitting body (48) with the aid of a connecting means.

4. Cable guide (44) according to claim 3, characterized in that the housing parts (56) have a receiving groove (60) open radially outwards, to receive the connecting medium, wherein the connecting medium is received in a completely recessed manner in the radial direction in the receiving groove (60).

5. Cable guide (44) according to claim 3 or 4, characterized in that the connecting means is in the form of a strip.

6. Cable guide (44) according to any one of claims 2 to 5, characterized in that the housing parts (56) rest against the dividing body (48) in the circumferential direction.

7. Cable guide (44) according to any of the Petition 870260074508, dated 07 / 27 / 2026, page 35 / 42 2 / 4 claims 1 to 6, characterized in that the splitting body (48) has a central region (50) and splitting webs (52) projecting radially outward from the central region (50).

8. Cable guide (44) according to any one of claims 1 to 7, characterized in that the phase line (36) is fixed in the associated passage cross-section (54).

9. Cable guide (44) according to any one of claims 1 to 8, characterized in that the respective phase line (36) has a contact connection (40), which is crimped together at at least one end.

10. Rotor for a generator (20) of a wind turbine (10), characterized in that it has a rotor body having at least one winding, a rotor mechanical shaft (26) connected to the rotor body, wherein the rotor mechanical shaft (26) has a cavity (30) that is open towards an axial side, and a cable guide (44) as defined in any one of claims 1 to 9, wherein the cable guide is inserted axially into the cavity (30) of the rotor mechanical shaft (26), wherein the phase lines (36) are radially guided outwards by means of the rotor mechanical shaft (26) and are contacted by the respective winding.

11. Rotor according to claim 10, characterized in that at least two axially insertable cable guides (44) are provided separately, which are arranged one behind the other in the axial direction in the cavity (30) of the mechanical rotor shaft (26), the cable guides (44) sharing the same phase lines (36).

12. Generator (20) for a wind turbine (10), characterized in that it has a stator, a rotor as defined in claim 10 or 11, the rotor of which interacts with the stator, and a contact unit, in particular in the form of a slip ring arrangement, for electrically contacting the ends of the phase lines (36) pointing away from the rotor body.

13. Use of a cable guide (44) as defined in any of claims 1 to 9, characterized in that it is for repairing phase lines (36) damaged by cable fire from a rotor of a generator (20) to a wind turbine (10).

14. Method for repairing phase lines (36) of a rotor of a generator (20) for a wind turbine (10), characterized in that the damaged phase line (36) is separated from the remainder of the rotor, the damaged phase line (36) is removed from a rotor mechanical shaft (26) of the rotor, while the rotor mechanical shaft (26) remains in a substantially horizontal orientation, and a cable guide (44) as defined in any of claims 1 to 9, is subsequently inserted into the rotor mechanical shaft (26) in the axial direction, while the rotor mechanical shaft (26) remains in a substantially horizontal orientation, in order to obtain the rotor as defined in claim 10 or 11.

15. Data cluster, characterized in that it comprises data packets that are combined into a common file or distributed across different files and that are intended to represent the three-dimensional design and / or the interactions of all constituent parts provided in the cable guide (44) as defined in any of claims 1 to 9, the data packets being prepared, when processed by a data processing device to operate a machine tool for the additive manufacturing of apparatus, to additively produce the constituent parts of the cable guide, in particular by means of 3D printing, and / or, when processed by a data processing device to perform a technical simulation, to perform a simulation of the operation of the cable guide (44) and to output simulation results generated herein for further use, in particular for the purpose of Petition 870260074508, dated 27 / 07 / 2026, p.37 / 42 4 / 4 provide a verification of fatigue resistance as a function of variable loads and / or variable thermal loads.

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