Split electromechanical

Abstract

The present invention relates to an electrical device for attachment to a rotatable shaft. The electrical device comprises at least two rotor parts configured to be coaxially combined around the shaft. The rotor parts are mechanically coupled to the shaft so as to constitute a rotor. Further, the electrical device includes at least two stator parts having a housing configured to be combined in a coaxial stator configuration around the rotor. The device also includes a coupling attached to the shaft in a coaxial configuration. Here, the coupling includes a flange portion extending outwardly from the shaft. The flange and the rotor include mating locking parts so as to connect the rotor to the flange and thus the rotor to the shaft.

Description

Technical Field

[0001] The present invention relates to a split-type electromechanical machine suitable for attachment to existing and new propulsion shafts having a rotating shaft, and more particularly to such a generator or motor.

Background Art

[0002] In applications such as ships, there is a need for an electric motor or generator to be added to the main propulsion system, to operate together with the main propulsion system, or as an alternative to the main propulsion system, or to form a hybrid propulsion system that can constitute the main propulsion system. This can be used to reduce fuel consumption and emissions and increase the flexibility of the system in case of errors. Such a solution is described in WO 2021 / 234675. Here, an electromechanical machine can be connected to the shaft of an existing propulsion system without disassembling the existing system.

[0003] The machine of WO 2021 / 234675 consists of a split rotor that can be attached around and connected to a propulsion shaft, and a split assembly with a split stator / housing connected around the rotor and the shaft. The rotor can be connected to the shaft via a collar attached to the shaft and is rotatably fixed to the collar via provided features. The problem with this solution is that the rotor becomes fixed to the shaft. If there is an abnormality in the connection between the rotor and the stator, for example, a short circuit in the stator or the connecting device, physical contact between the stator or the rotor, or an increase in friction between the two, the propulsion system will continue to rotate and damage the complete device or the connecting device.

Summary of the Invention

[0004] Accordingly, an object of the present invention is to provide an electromechanical machine such as a motor or a generator. This can be attached to an existing propulsion shaft and / or a new propulsion shaft while ensuring special safety in the event of an abnormality in the electromechanical machine or the connected equipment. Also, the attachment process needs to be simple and unobtrusive, and further, means for monitoring the relative rotational positions of the shaft, rotor and / or stator can be provided to control the operation, and not only detect damage or abnormalities in the device, but also assist in mitigating faults and / or re-establishing operation. One or more of these objects are achieved by a device as described above and defined in the appended claims.

[0005] The following description is mainly based on use in ship propulsion, but other applications with rotating shafts or axles around which couplings can be connected, such as motors, generators, generator sets, gear systems, thrusters, winches, etc., are also contemplated.

Brief Description of the Drawings

[0006] The present invention will now be described in detail with reference to the accompanying drawings.

Figure 1

Figure 2

Figure 3

Figure 4a

Figure 4b

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Figure 10

Mode for Carrying Out the Invention

[0007] As shown in FIG. 1, the present invention relates to an apparatus 1 which is connected to a shaft 2 of a propulsion system in which an engine 3 drives the shaft 2, and is particularly a motor or a generator. Here, the shaft includes an end connector 2a for connecting to, for example, a propeller of a ship. The apparatus 1 according to the present invention is attached to or connected to the shaft 2. In the drawings, a shaft support 2b and a generator support 1a which usually includes bearings are shown.

[0008] FIG. 2 shows a connection portion. In the embodiment shown in the figure, a coupling 4 including a first flange 6 attached to a corresponding flange 3a of the shaft 2 or the engine 3 is shown. Thereby, the rotation of the coupling 4 is locked to the shaft 2. A split flexible coupling may be connected between 2 / 3a and 6. The connection between the shaft 2 and the coupling 4 may be alternatively made in many ways as is well known in the art.

[0009] FIG. 3 shows the coupling 4 used in the embodiment shown in FIG. 2, including a first flange 6 for connecting to a shaft or an engine. Here, the coupling also includes a second flange 7. The second flange 7 is configured to be connected to a corresponding portion of the rotor of the generator or the motor 1 according to the present invention using, for example, bolts, shear pins, or actuating shear pins / bolts. The coupling may be provided with a soft metal such as brass, titanium, copper, nickel, aluminum, etc. to avoid fretting between the coupling and the shaft, and the number of flanges depends on the solution to be implemented.

[0010] Figure 4a shows an embodiment of the present invention in which the engine 3 is connected to the propeller 2c via the shaft 2 and the connector 2a. The device 1 according to the present invention is shown in cross-section in Figure 4b, and a coupling 4 composed of two parts 4a and 4b is attached to the shaft 2. The second flange 7 is connected to the corresponding flange 8 of the rotor 12 via a number of pins or bolts 9 (Figure 4a). In the drawing, the rotor flange 8 has a coaxial portion extending along the coupling 4. This makes it possible to stabilize the movement and orientation of the rotor even if the pins break or come off.

[0011] In the embodiment shown in the figure, the rotor 12 is provided with permanent magnets 10, but those skilled in the art can also consider other solutions, such as salient poles that are externally excited and have resistance. An outer stator 11 having a housing 15 surrounds the rotor 12, and the rotor and the stator are separated by an air gap 5. The stator may be provided with water jacket cooling (39, Figure 7) as is known in the art. The configurations of the rotor and the stator may be selected according to available solutions and the space during modification as long as they can be divided into two or more sections configured to be attached to the shaft 2.

[0012] As described above, each of the coupling, the rotor, the stator, and the housing may be composed of two or more sections configured to be attached to the shaft. Preferably, the rotor and the stator are each composed of three parts at 120 degrees (for example, the rotor parts 12c, 12d, and 12e shown in Figure 4b). In this way, each of the (three) segments is coupled as in the housing, the stator, and the rotor, and is arranged in consideration of alignment and balance adjustment for each. This not only facilitates installation when space is limited, but also the three segments represent three force vectors at an angle of 120 degrees between the segments, which is beneficial for balancing the dynamic rotational behavior of the rotor. More segments are also conceivable, but for the reasons described above, it is preferably a number divisible by 3.

[0013] According to the present invention, the pin or bolt 9 is configured to break under a predetermined force. Thereby, when the rotation of the rotor and the stator is locked unintentionally, the device can be disengaged rotatably from the shaft 2 to suppress damage to the system.

[0014] Although not shown in detail, the stator is composed of two or more parts, preferably three parts, so as to be attached around the shaft 2, the coupling 4, and the rotor 12 as described above. Also, the housing 15 is arranged similarly.

[0015] Figure 5 shows a modification of the embodiment of Figure 4a. Here, one or more split bearings 14, preferably having self-lubricating properties, are arranged between the portion of the rotor flange 8 extending along the coupling and the coupling 4. Thereby, the bearings can rotate relative to each other when the pin breaks. Also, the device may include a brake 13 that operates manually or automatically between the rotor 12 and the stator / housing 11. This can be used to lock the rotor or remove the pin depending on the situation. Alternatively, the pin or bolt can be freely broken or connected / disconnected.

[0016] In Figure 6, a pair of additional rotation sensors or encoders 20, 21 integrated with the frequency converter 22 that synchronizes the control algorithm is provided. This can detect and / or monitor the relative movement between the rotor 12 and the shaft 2 and, optionally, between the rotor 12 and the coupling 4. In this way, the position with respect to the rotor and the shaft / coupling can be controlled or measured in order to stop and start the device. Thus, the movement of the rotor can be initiated or interrupted at a predetermined relative position between these parts. Also, the rotational movement between the rotor and the shaft / coupling can be detected, for example, as indicating a broken pin, or monitored in order to connect the pin in the correct relative orientation between the parts. Further, the brake mechanism 13 may be used to lock the relative orientation between the stator and the rotor. The encoder or sensor may be selected from commercially available solutions, which will not be described in detail here.

[0017] Figure 7 shows a modification of the embodiment of Figure 5. Here, an air gap is introduced between the shaft 2 and the rotor 12. In the example shown in the figure, one coupling 4 is arranged at both ends of the rotor. The coupling 4 includes a flange portion 9 outward from the shaft and may be coupled to the rotor 12 using bolts 25 as described above. The coupling 4 can be connected to the shaft, for example, by one or more segmented compression joints that frictionally connect a segmented coupling to the shaft 2. Optionally, a bolt flange connection as shown in Figures 3 and 4a is also possible. The rotor 12 can be connected to the stator housing 15 by a manual / semi-automatic or actuated connection 36 by means of one or more segmented connection rings 35, and the stator housing can support the weight and lock the rotor 12 and the coupling 4 in a predetermined position. Also, the connection ring 35 may include any known type of brake mechanism 13 as shown in the previous figures configured to control the relative rotation between the rotor and the stator. As shown in the figure, the rotor is supported, for example, by two supports 2d, 2e on a common platform 1b on a ship. The supports 2e, 2d are provided with split bearings that can be used to support the weight of the rotor 12. The air gap and the fixing / carrying / cutting mechanism allow the shaft 2 to operate freely and the device 1 to be disconnected without interfering with the main functions of the shaft systems 2, 3. The air gap limits the influence of the lateral vibration and rotation of the shaft 2 to the air gap between the rotor segment 10 and the stator segment 11.

[0018] In Figure 7, a pair of additional rotary sensors or encoders 20, 21 integrated with one or more frequency converters 22 having a control algorithm are provided that can detect and / or monitor the relative movement and position between the rotor 12, the coupling 4, and the shaft 2. In this way, the relative position of the rotor and the shaft / coupling can be controlled or measured to stop and start the device. Thus, the movement of the rotor 12 can be started or interrupted at a predetermined relative position between the parts. Also, the rotational movement between the rotor and the shaft / coupling may be detected, for example, as indicating a broken pin, or monitored to connect the pins or bolts in the correct orientation relative to each other. A brake mechanism 13 as shown in Figures 5 and 6 may be used to lock the relative orientation between the stator and the rotor. In Figure 7, the brake mechanism is connected to a separate flange of the rotor part 12 via a pin or bolt 36. The encoders or sensors 20, 21 may be selected from commercially available solutions not described in detail here. The converter control 22 and the sensors 20, 21 can optionally control the rotation gear / brake 23 of the main engine 3. The relative position can be controlled via a local operator panel (LOP).

[0019] Figure 8 is a diagram showing that segments can be installed from above even in a narrow area by position control. The stator segment and the rotor segment 10 can be sequentially installed one by one from above on the rotor support flange. Also, the stator segments can be sequentially installed one by one on the permanent end shield structure 15 of the stator housing and the segmented connection ring 35. Finally, the stator housing structure 15 can be fixed to the base by the multi-position generator legs 33 (see Figure 9).

[0020] FIG. 9 is a diagram showing a method for the stator facility described above. The ring structure 30 arranged by the distributed rolling mechanism 31 respectively arranged on the housing structure 15 of the stator enables the installation of the stator segment 11 from above. The segmented ring structure 30 on the support ring or shield 15 of the stator enables handling such as the installation of all the stator segments 11 from above and the placement at the installation position. The completely assembled and rotatable stator is fixed to the base 1b by the fixed or multi-position stator leg 33. In this way, the ring structure can carry the segment 11, and when all the segments are coaxially in the correct position around the housing transport structure 15 of the stator by a manual or automatic actuator, the stator segment can be arranged at a predetermined position on the circumference of the machine. Further, this structure enables the stator segment to be sent when a frequency converter or a sensor detects a failure of the segment, and enables an installation independent of the main systems 2 and 3 as described below. A preferred installation method of the embodiment shown in FIG. 7 is shown in FIG. 8. This may include the following steps. 1. The segmented supports 2d, 2e are first installed on the base of the ship or the common device 1. The segmented support enables rotation. 2. The coupling parts 4a, 4b (see FIG. 4b) are connected to the shaft 2. 3. The rotor segments 10 dedicated to the rotor 12 are assembled with the supports 2d, 2e. 4. The rotor 12 is connected to the couplings 4a, 4b. 5. The upper half of the supports 2d, 2e is assembled to fix the position of the rotor 12. 6. The assembly of the supports 2d, 2e, the coupling 4, and the rotor 12 (without the rotor segment 10) can be rotated by the rotating gear 3. Alternatively, the connection between the coupling parts 4a, 4b and 12 can be postponed in order to rotate the rotor assembly 12 (for example, 10) relative to the support by a conventional handling tool. 7. The assembly of the supports 2d, 2e, the shaft 2, the coupling 4, and the rotor 12 (e.g., 10) is then aligned and balanced according to methods known in the art. 9. By means of a rotating gear or manual rotation, the rotor segment 10 including the outer protective part of the segment is assembled and fixed onto the guide pins on the upper part of the flange of the rotor structure 12, and can be rotated to the next position to install the next rotor segment 10 including the outer protective part from above until the circular installation is completed. 10. The final circular rotor structure is then fixed, aligned, and balanced according to methods known in the art. 11. The segmented connection ring 35 and the connection part 36 connect the segmented stator ring or shield 15 to the lock flange of the stator shield of the rotor 12. 12. The ring 35, the connection part 36, and the segmented stator ring or shield 15 are aligned according to methods known in the art. 13. By means of a rotating gear or manual rotation, the stator segment 11 is assembled and fixed into the dedicated slots on the upper part of the stator end shield structure 15, and can be rotated to the next position to install the next segment 11. As an option alternatively referred to in step 7, rotation can be achieved with the connection of the coupling part and the rotor postponed. 14. The final circular stator structure is fixed by the multi-position legs 33, aligned according to methods known in the art, and balanced. The protective part of the rotor segment is removed between steps 13 and 14. 15. By cutting the lock connection part 36, free rotation of the rotor 12, the shaft 2, and the coupling 4 with respect to the stator 11 and the stator housing 15 becomes possible. 16. This process can be fully or partially reversed by sending the segments during failure or disassembly for maintenance.

[0021] Referring to FIGS. 8 and 9, steps 13-16 may include the following.

[0022] During step 13, the brake mechanism 13, the ring 35, the connection part 36, and the stator shield 15 are fixed to the ship structure together with the stator legs. A segmented installation ring 30 including the rolling mechanism 31 is installed around the stator housing structure.

[0023] During step 14, by the rotation and arrangement of the installation ring 30 and the rolling mechanism 31, the stator segment 11 is assembled and fixed in a dedicated slot at the upper part of the ring-shaped stator shield structure 15 and can be rotated to the next position to install the next segment 11.

[0024] During step 15, the final circular stator structure is fixed to the stator shield manually or by an operating mechanism. The stator is aligned according to methods known in the art. The rotor segment protection part is removed between steps 14 and 15.

[0025] After step 15, 36 is cut, and the rotor 12, the shaft 2, and the coupling 4 can rotate freely with respect to the stator.

[0026] Figure 10 shows an embodiment in which the rotor 12 is separated into two rotor portions 12a and 12b in the longitudinal direction. Each portion may have separate circuit wiring and magnets or other known rotor design principles 10a, 10b, and the bearings 2d, 2e carry the weight of those portions together with the coupling flanges 4a, 4b, for example using compression joints. This solution allows for an additional independent internal electric machine with a stator 11b and a second rotor portion 10b, 12a to be provided in a separate compartment inside the first rotor portion 12b of the main electric machine, in the main electric machine having a stator 11a and the first rotor portion 12b, 10a. With the rotor and stator in separate chambers, it is possible to avoid faults such as short circuits from affecting the complete functionality of the device. By utilizing the internal space of the rotor, a compact fully redundant device can be realized. Both stators 11a, 11b may be water jacket cooled as described above. If both compression joints are frictionally connected to the separated coupling 4, the two electric machines can operate in parallel. When one of the two compression joints is released, either the main electric machine or the internal electric machine can rotate the shaft independently. An additional rotational sensor or encoder 20b integrated with one or more frequency converters 22 having its control algorithm is provided, which can detect and / or monitor the relative movement and position between the rotor portions 12a, the rotor rotor 12b, and the coupling segments 4a, 4b and the shaft 2. In this way, it may be possible to control or measure the relative position between the rotor and the shaft / coupling to stop and start the device. Thus, the movement of the rotor may be started or cut off at a predetermined relative position between its parts. Also, the rotational movement between the rotor and the shaft / coupling may be detected, for example, as indicating a broken pin or bolt, or monitored to connect the pins or bolts in the correct orientation of those parts relative to each other. Brake mechanisms 13a, 13b may be used to lock the relative orientation between the stator and the rotor. The encoder or sensor may be selected from commercially available solutions, which are not described in detail here.

[0027] Briefly, the present invention relates to an electrical device for attachment to a rotatable shaft, particularly a generator or a motor. The device comprises at least two rotor parts configured to be coaxially combined around the shaft. The at least two rotor parts are mechanically coupled to the shaft so as to constitute a rotor. The device also includes at least two stator parts having a housing configured to be combined in a coaxial stator configuration around the rotor.

[0028] The device also includes a coupling attached to the shaft in a coaxial configuration. Here, the coupling includes a flange portion extending outward from the shaft. The flange and the rotor include mating locking parts so as to connect the rotor to the flange and thus the rotor to the shaft. The coupling may also include an inner layer of soft metal to avoid fretting between the coupling and the shaft.

[0029] The coupling is composed of at least two parts. These parts are combined and attached to each other and to the shaft.

[0030] The coupling, rotor, stator, and housing, etc. can have various shapes and numbers, but preferably have similar sizes and shapes that each constitute substantially three sections of 120 degrees in order to maintain symmetric loads and wear.

[0031] The rotor may include a portion extending towards the shaft. This portion can, in some cases, extend along a distance along the shaft and include at least one split bearing between the rotor and the shaft or the coupling device.

[0032] The flange of the coupling may be attached to the rotor, for example, via a flange on the rotor and attached to the rotor by bolts passing through the flange and the rotor. The bolt may be composed of a shear pin configured to break under a predetermined force. Thereby, the coupling and the rotor can rotate relative to each other.

[0033] A detection device such as a sensor or an encoder may be provided. The detection device can detect the rotational position or movement between the rotor and the shaft and / or between the shaft and the stator. The generator, the rotor, and / or the stator may be configured to be enabled or disabled at a predetermined relative position between them to drive the device. If there is a deviation between the intended movement and the detected movement, the rotor is disabled and an error is registered.

[0034] The device according to the present invention may be part of a system that is connected to a battery circuit for storing the generated energy when operating as a generator and connected to a power source when operating as an electromechanical device.

[0035] Alternatively, two couplings 4 are attached to the shaft 2. The rotor 12 extends along the shaft between the couplings and has an inner dimension larger than that of the shaft 2 so as to provide an air gap between the rotor and the shaft. As described above, the connector of the coupling 4 may be fixed to the shaft by a segmented compression joint or alternatively connected directly or via a connection part of a flange / flywheel.

[0036] The detection devices 20, 21 may be configured to detect the relative movement and position between the rotor / coupling and the shaft. Here, the device according to the present invention, when fixed to the stator with respect to the coupling with the rotor, or from the coupling with the rotor, or by a manual or actuated fixed arrangement in the brake mechanism or unit 13, the coupling, for example, a compression joint and a flywheel flange, may be controlled for manual, semi-automatic, or automatic cutting. Also, for positioning and locking the shaft line, it may include automatic control or local control 22 of the rotating gear 3 of the main engine.

[0037] As shown in FIGS. 8 and 9, according to the present invention, by rotating each installation area controlled at its position, the rotation of the coupling with segment flanges for assembling all rotor segments from above to the flange becomes possible.

[0038] As described above in connection with FIG. 9, with the segmented stator support ring and a provisional or permanent flange ring or rotatable ring on the stator support ring, all stator segments can be handled from above and can be installed or carried into the installation position by the segmented ring structure. The fully assembled rotatable stator can be fixed to the base by the multi-position stator legs.

[0039] A water cooling part may be provided for the external stator or the internal rotor of the machine. Also, the external stator or the internal rotor can rotate the shaft by an existing main rotor or rotor windings or poles added inside the main rotor.

[0040] Due to the internal hollow structure, the stator of the internal motor can be flange-connected to the rotor on one or both sides of the device via the shaft.

[0041] Alternatively, the rotor may be an elongated rotor extending along the shaft, or may be one coupling connected to both ends of the rotor. Here, the rotor has an inner radius that exceeds the radius of the shaft. Thereby, an air gap is provided between the shaft and the rotor. In this case, they may be rotatably supported by at least one support structure. Also, the rotor may be longitudinally divided, each part connected to one coupling, and each rotor part may include one stator part.

[0042] According to another aspect, the present invention relates to an electromechanical device for driving a rotatable shaft, including at least two couplings attached to the shaft in a coaxial configuration, and an elongated rotor extending along the shaft and having both ends connected to the couplings to the shaft. The rotor is composed of at least two rotor parts configured to be coaxially combined around the shaft. The dimensions of the rotor are configured to provide a coaxial air gap between the rotor and the shaft. The electromechanical device includes a stator composed of at least two stator parts having a housing configured to be coaxially combined around the rotor. As described above, the rotor is rotatably supported by at least one support structure.

[0043] According to yet another aspect of the present invention, the rotor may be longitudinally divided into two rotor parts. Here, each part has at least two stator parts configured to be coaxially combined around the rotor. In this way, the rotor parts are configured to operate independently of each other. The stator housing may surround both stators having corresponding magnets or rotor segments. The rotor parts and rotor segments may have different dimensions, and as shown in FIG. 10, one may be arranged in an inner compartment of the other.

[0044] The present invention also relates to a method of assembling a machine or device as described above, including the following steps. a) Attaching two couplings to the shaft at a predetermined interval. b) Assembling at least two rotor segments around the shaft. c) Rotating the rotor segment in a new direction until the circular installation is completed for installation from above the next rotor segment. d) Connecting the segmented connecting ring to the segmented stator shield and the rotor so that the connecting ring and the stator segment can rotate independently of the rotor while they are attached. e) Rotating the stator shield and the rotor to the next position where the stator shield and the rotor can rotate independently of each other for the installation of the next stator segment. f) Cutting the locking connection to enable free rotation of the rotor 12 relative to the stator 11.

[0045] The connection between the rotor and the coupling may be provided in either step b or step f depending on the situation. Also, step b may include attaching an external rotor protection part. The rotation is performed using a rotating gear.

Claims

1. An electrical device for attachment to a rotatable shaft, said electrical device comprising at least two rotor parts configured to be coaxially combined around said shaft, said rotor parts being mechanically coupled to said shaft so as to form a rotor, said electrical device further comprising at least two stator parts having a housing configured to be combined in a coaxial stator configuration around said rotor, said electrical device including at least one coupling attached to said shaft in a coaxial configuration, said coupling including mating locking parts so as to connect said rotor to said coupling and thus said rotor to said shaft, Electrical device.

2. The electrical device according to claim 1, wherein said coupling is composed of at least two parts combined with each other and attached to said shaft.

3. The electrical device according to claim 2, including at least one split bearing between said rotor and said shaft or coupling device.

4. The electrical device according to claim 1, wherein said coupling includes a flange attached to said rotor.

5. The electrical device according to claim 3, wherein said flange and said rotor are attached to each other by bolts passing through said flange and said rotor.

6. The electrical device according to claim 3, wherein said bolt is a shear pin configured to break with a predetermined force so as to allow relative rotation between said coupling and said rotor.

7. The electrical device according to claim 1, including a sensing device configured to detect the rotational position or movement between said rotor and said shaft.

8. The rotor of the electrical device according to claim 7 is configured to be enabled or disabled when a predetermined relative position between the rotor and the shaft is detected in order to drive the electrical device.

9. In the electrical device according to claim 7, if there is a deviation between the intended movement and the detected movement, the rotor is disabled and an error is registered.

10. The electrical device according to claim 1 is provided with a soft metal on an inner surface configured to contact the shaft in the coupling.

11. The electrical device according to any one of claims 1 to 10, wherein the rotor and / or the stator preferably each have at least three parts that are 120 degrees each.

12. An elongated rotor extending along the shaft and one coupling connected to each end of the rotor. The rotor has an inner radius that exceeds the radius of the shaft, whereby an air gap is provided between the shaft and the rotor. The electrical device according to claim 1.

13. The electrical device according to claim 12, wherein the rotor is rotatably supported by at least one support structure.

14. The electrical device according to claim 12, wherein the rotor is longitudinally divided into rotor parts, and each of the rotor parts is connected to one coupling and includes one stator part.

15. A system including the electrical device according to any one of claims 1 to 14, wherein the electrical device constitutes a generator, and the generator is connected to a battery circuit to store the generated energy.

16. A system including the electrical device according to any one of claims 1 to 14, wherein the electrical device is an electric motor connected to a power source.

17. An electromechanical machine for driving a rotatable shaft, comprising at least two couplings attached to the shaft in a coaxial configuration, and an elongate rotor extending along the shaft and having both ends connected to the couplings and thus to the shaft, wherein the rotor is composed of at least two rotor parts configured to be coaxially combined around the shaft, the dimensions of the rotor being configured to provide a coaxial air gap between the rotor and the shaft, and the electromechanical machine comprising a stator composed of at least two stator parts having a housing configured to be coaxially combined around the rotor.

18. The electromechanical machine according to claim 17, wherein the rotor is rotatably supported by at least one support structure.

19. The electromechanical machine according to claim 17, wherein the rotor is longitudinally divided into two rotor parts, each of the rotor parts having at least two stator parts configured to be coaxially combined around the rotor, and the rotor parts being configured to operate independently of each other.

20. The electromechanical machine according to claim 19, wherein the housing of the stator surrounds the stator.

21. A method of assembling the electromechanical machine according to claim 17, comprising: a) attaching two couplings to the shaft at a predetermined interval; b) assembling at least two rotor segments around the shaft; c) rotating the rotor segment in a new direction until a circular installation is completed for installation from above the next rotor segment; d) connecting a segmented connection ring to the segmented stator shield and the rotor. e) rotating the stator shield and the rotor to the next position for installation of the next stator segment; f) cutting a locking connection to enable free rotation of the rotor relative to the stator; A method comprising the above steps. **Claim 22** The method according to claim 19, wherein step b) includes connecting the coupling to the rotor. **Claim 23** The method according to claim 19, wherein step f) includes connecting the coupling to the rotor. **Claim 24** The method according to claim 19, wherein the rotation is performed using a rotation gear. **Claim 25** The method according to claim 19, wherein step b) includes attaching an external rotor protection part.

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