Rotary electric machine system and composite power system

Abstract

To provide a composite power system capable of preventing an electrical component from being damaged due to a flow of current at a position deviating from the electrical component even when a structure at which a rotary electric machine system is installed is struck by lightning and partial current flows through the rotary electric machine system.SOLUTION: A composite power system 10 comprises a rotary electric machine system 12. The rotary electric machine system 12 comprises a rotary electric machine 16 and a rotary electric machine housing 18. In order to hold the rotary electric machine housing 18 using a support member provided at a structure at which the rotary electric machine system 12 is installed, a first holding part 91 and a second holding part 92 are provided at a periphery 180 of the rotary electric machine housing 18. At the periphery 180 of the rotary electric machine housing 18, an electrical component 60 is arranged at a position deviating from a space between the first holding part 91 and the second holding part 92.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a rotating electrical machine system and a hybrid power system. [Background technology]

[0002] In recent years, research and development into energy efficiency has been conducted in various fields, including the field of rotating electrical machines, in order to ensure that more people can have access to affordable, reliable, sustainable, and advanced energy. Rotating electrical machine systems are well known, as exemplified by Patent Document 1. In Patent Document 1, a combined power system including a rotating electrical machine system and an internal combustion engine is installed in the fuselage of an aircraft. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] European Patent Application Publication No. 4116191 Summary of the Invention [Problem to be solved by the invention]

[0004] If a facility in which a rotating electric machine system is installed is struck by lightning, there is a possibility that current will flow into the rotating electric machine system via the stays that support the rotating electric machine system. In this case, it is necessary to protect the electrical components mounted on the rotating electric machine system.

[0005] The present invention aims to solve the above-mentioned problems. [Means for solving the problem]

[0006] A first aspect of the present disclosure is a rotating electric machine system comprising a rotating electric machine having a rotor including a permanent magnet and a rotating shaft, and a rotating electric machine housing that rotatably supports the rotating shaft, wherein the rotating electric machine system comprises electrical components provided in the rotating electric machine housing, and first and second retaining portions provided on the outer periphery of the rotating electric machine housing for holding the rotating electric machine housing by support members provided on a structure on which the rotating electric machine system is installed, the first retaining portion and the second retaining portion being arranged at positions spaced apart from each other in the circumferential direction of the rotating electric machine housing, and the electrical components being arranged at a position on the outer periphery that is away from between the first retaining portion and the second retaining portion.

[0007] A second aspect of the present disclosure is a combined power system comprising the rotating electric machine system described in the first aspect, an internal combustion engine having an output shaft that rotates integrally with the rotating shaft, and a combustor, wherein the combined power system further comprises a plurality of third holding portions that are spaced apart from one another on the outer periphery of the internal combustion engine and that hold the internal combustion engine by other support members that are provided on the structure, and the plurality of third holding portions are provided at positions offset from the combustor in the axial direction of the internal combustion engine. [Effects of the Invention]

[0008] According to the present invention, even if the structure on which the rotating electric system is installed is struck by lightning and some of the current flows into the rotating electric system, the current flows away from the electrical components, thereby preventing damage to the electrical components. [Brief explanation of the drawings]

[0009] [Figure 1] FIG. 1 is a perspective view of a combined power system according to an embodiment of the present invention. [Figure 2] FIG. 2 is a cross-sectional view of a rotating electrical machine system in a combined power system. [Figure 3] FIG. 3 is a schematic diagram of a current converter. [Figure 4]FIG. 4 is a cross-sectional view of an internal combustion engine in a combined power system. [Figure 5] FIG. 5 is a schematic diagram showing the arrangement of the combined power system relative to the structure. [Figure 6] FIG. 6 is a schematic diagram showing another arrangement of the combined power system relative to the structure. DETAILED DESCRIPTION OF THE INVENTION

[0010] In the following description, it is assumed that the combined power system 10 is installed in a target structure 100 (FIGS. 4 and 5) in the orientation shown in Figures 1 to 6. That is, the upper and lower sides in Figures 1 to 6 are vertically upper and vertically lower, respectively.

[0011] The combined power system 10 shown in FIG. 1 is used, for example, as a power source for propelling a moving object. Examples of moving objects on which the combined power system 10 can be mounted include an air vehicle, a ship, or an automobile. Specific examples of suitable air vehicles include a drone or a multicopters. When mounted on an air vehicle, the combined power system 10 serves as a power drive source for rotating a propeller, a ducted fan, or the like. When mounted on a ship, the combined power system 10 serves as a rotational force generator for a screw. When mounted on an automobile, the combined power system 10 serves as a power drive source for rotating a motor.

[0012] The combined power system 10 can also be used as a power source for auxiliary power in an aircraft, a ship, a building, etc. The combined power system 10 can also be installed in a stationary body, such as a wall or floor of a building for a gas turbine power generation facility.

[0013] The combined power system 10 includes a rotating electric machine system 12 and an internal combustion engine 14. The axis of the rotating electric machine system 12 and the axis of the internal combustion engine 14 coincide with each other. In other words, the rotating electric machine system 12 and the internal combustion engine 14 are disposed adjacent to each other on the same axis. Hereinafter, the axis of the rotating electric machine system 12 and the axis of the internal combustion engine 14 will be collectively referred to as the "axis Ax." The combined power system 10 will also be referred to as the "axis Ax."

[0014] As shown in FIG. 2, the rotating electric machine system 12 includes a rotating electric machine 16 and a rotating electric machine housing 18.

[0015] The rotating electric machine housing 18 houses the rotating electric machine 16. The rotating electric machine housing 18 has a main housing 20, a first sub-housing 22, and a second sub-housing 24. The main housing 20 has a generally cylindrical shape with both ends in the axial direction (X direction) open. Hereinafter, one end of the main housing 20 in the axial direction will be referred to as the "first end." The other end of the main housing 20 in the axial direction will be referred to as the "second end."

[0016] The main housing 20 has a peripheral wall 201 that surrounds the rotating electrical machine 16. The hollow interior surrounded by the peripheral wall 201 of the main housing 20 is a storage chamber 202. Most of the rotating electrical machine 16 is housed in the storage chamber 202.

[0017] A cooling jacket 203 is spirally formed on the peripheral wall 201 of the main housing 20. A cooling medium flows through the cooling jacket 203. A specific example of the cooling medium is cooling water. In this case, the cooling jacket 203 is a water jacket.

[0018] 1, a terminal casing 28 and a measuring device casing 30 are provided near the edge of the first end on the outer surface of the peripheral wall 201 of the main housing 20. The terminal casing 28 and the measuring device casing 30 are provided integrally with the main housing 20. The measuring device casing 30 is adjacent to the terminal casing 28. The measuring device casing 30 houses a thermistor 31, which is a temperature measuring device.

[0019] 2, terminal casing 28 has an internal space 29. Internal space 29 is in communication with storage chamber 202. Terminal casing 28 accommodates a U-phase terminal 281, a V-phase terminal 282, and a W-phase terminal 283. U-phase terminal 281, V-phase terminal 282, and W-phase terminal 283 are electrical terminal portions to which external devices (external loads or external power sources) are electrically connected.

[0020] The electric power generated by the rotary electric machine 16 is supplied to an external device. An example of the external load is a motor (not shown). An example of another external device is a battery 74 (FIG. 3).

[0021] The first sub-housing 22 is connected to a first end of the main housing 20. A resolver holder 32 is connected to the first sub-housing 22. The resolver holder 32 holds a resolver stator 341 of a resolver 34. The resolver 34 is a rotation parameter detector. A cap cover 35 is connected to the resolver holder 32.

[0022] The second sub-housing 24 is connected to a second end of the main housing 20. A straightening member 36 is connected to the end surface of the second sub-housing 24 that faces the internal combustion engine 14.

[0023] The rotating electric machine 16 is, for example, a generator. The rotating electric machine 16 may be an electric motor. The rotating electric machine 16 includes a rotor 38 and a stator 40. The rotor 38 includes a permanent magnet 42 and a rotating shaft 44. The permanent magnet 42 is held on the outer periphery of the rotating shaft 44. In the following description, the axial direction of the rotor 38 has the same meaning as the axial direction of the rotating electric machine system 12. For this reason, the axial direction of the rotor 38 or the axial direction of the rotating electric machine system 12 may sometimes be simply referred to as the "axial direction."

[0024] The rotating shaft 44 has a large diameter portion 440, a first small diameter portion 441, and a second small diameter portion 442. The large diameter portion 440 supports the permanent magnet 42. The first small diameter portion 441 and the second small diameter portion 442 protrude from the large diameter portion 440 in opposite directions along the axial direction of the rotor 38. Specifically, the first small diameter portion 441 protrudes in the axial direction from one end of the large diameter portion 440. The second small diameter portion 442 protrudes in the axial direction from the other end of the large diameter portion 440. The outer diameters of the first small diameter portion 441 and the second small diameter portion 442 are smaller than the outer diameter of the large diameter portion 440.

[0025] The rotating shaft 44 has an inner shaft 46 and an outer shaft 48. The inner shaft 46 is inserted into the outer shaft 48. The inner shaft 46 is fixed to the outer shaft 48. The inner shaft 46 is longer than the outer shaft 48. One end of the inner shaft 46 protrudes from the outer shaft 48. A resolver rotor 342 of the resolver 34 is fixed to the one end of the inner shaft 46.

[0026] The outer shaft 48 is hollow and open at both axial ends. The permanent magnet 42 is held on the outer periphery of the outer shaft 48. The large diameter portion 440, the first small diameter portion 441, and the second small diameter portion 442 described above are provided on the outer shaft 48.

[0027] The rotating shaft 44 is rotatably supported by the first sub-housing 22 via a first bearing 50 and a second bearing 52. The first bearing 50 is disposed between the rotating electric machine housing 18 and the first small diameter portion 441. The second bearing 52 is disposed between the rotating electric machine housing 18 and the second small diameter portion 442.

[0028] The first bearing 50 is disposed between the outer shaft 48 and the first sub-housing 22. A hollow first holder 54 is inserted into the first sub-housing 22. The first bearing 50 is held on the inner periphery of the first holder 54.

[0029] The second bearing 52 is disposed between the outer shaft 48 and the second sub-housing 24. A hollow second holder 56 is inserted into the second sub-housing 24. The second bearing 52 is held on the inner periphery of the second holder 56.

[0030] The stator 40 surrounds the rotor 38. The stator 40 is housed in a housing 202. The stator 40 has electromagnetic coils 58. The electromagnetic coils 58 include three types of coils: a U-phase coil, a V-phase coil, and a W-phase coil. When the rotating electric machine 16 is a generator, the rotating electric machine 16 is a so-called three-phase power supply.

[0031] A U-phase terminal 281 is electrically connected to the U-phase coil of electromagnetic coil 58. A V-phase terminal 282 is electrically connected to the V-phase coil of electromagnetic coil 58. A W-phase terminal 283 is electrically connected to the W-phase coil of electromagnetic coil 58.

[0032] As shown in FIG. 1 , an electrical component 60 is provided in the rotating electric machine housing 18. The electrical component 60 is, for example, an ECU, a PCU, an inverter, etc. A current converter 62 provided in the rotating electric machine housing 18 is the electrical component 60. In this embodiment, the electrical component 60 (current converter 62) is disposed inside the terminal casing 28. The position where the electrical component 60 is disposed is not limited to inside the terminal casing 28. The electrical component 60 may be disposed, for example, between the terminal casing 28 and the internal combustion engine 14 on the outer circumferential portion 180 of the rotating electric machine housing 18.

[0033] 3, the current converter 62 includes a conversion circuit 64, a capacitor 66, and a control circuit 68. The conversion circuit 64, the capacitor 66, and the control circuit 68 are housed in a device case 70.

[0034] The conversion circuit 64 includes a power module 72. The conversion circuit 64 converts the AC current generated in the electromagnetic coil 58 into DC current. At this time, the capacitor 66 temporarily stores the DC current converted by the conversion circuit 64 as an electric charge. The conversion circuit 64 also has the function of converting the DC current sent from the battery 74 into AC current. In other words, the conversion circuit 64 is an inverter. In this case, the capacitor 66 temporarily stores the DC current sent from the battery 74 to the electromagnetic coil 58 as an electric charge.

[0035] The control circuit 68 controls the current density of the DC current flowing from the capacitor 66 to the battery 74 or the DC current flowing in the opposite direction. The control circuit 68 is an ECU or a PCU. The DC current from the battery 74 is supplied to a motor (neither of which are shown), for example, via an AC-DC converter.

[0036] 1, the internal combustion engine 14 is a gas turbine engine 76. The internal combustion engine 14 may be a positive displacement internal combustion engine (a reciprocating engine or a rotary engine). As shown in FIG. 4, the gas turbine engine 76 includes an engine housing 78, an output shaft 80, a compressor wheel 81, a shroud case 82, a diffuser 83, a turbine wheel 84, a combustor 85, and a duct 86.

[0037] The engine housing 78 includes an inner housing 780 and an outer housing 782. The inner housing 780 is connected to the second sub-housing 24 of the rotating electric machine system 12. The outer housing 782 is connected to the inner housing 780. The outer housing 782 is a housing body that constitutes the main part of the engine housing 78. The inner housing 780 has a plurality of pillar portions 784 that are arranged at intervals in the circumferential direction. An intake space 786 is formed between the pillar portions 784.

[0038] The output shaft 80 is connected to the rotating shaft 44. One end of the output shaft 80 is screwed into a female thread portion provided on the other end of the inner shaft 46. The shroud case 82 is inserted inside the inner housing 780. The shroud case 82 is fixed to the inner housing 780. The shroud case 82 is a cylindrical member that surrounds the compressor wheel 81. Air is introduced into the shroud case 82 from the intake space 786.

[0039] The compressor wheel 81 and the turbine wheel 84 are supported by the output shaft 80. The compressor wheel 81 and the turbine wheel 84 can rotate integrally with the rotating shaft 44 and the output shaft 80.

[0040] The diffuser 83, turbine wheel 84, combustor 85, and duct 86 are disposed within the outer housing 782. The diffuser 83 is fixed to the inner housing 780. The diffuser 83 surrounds the compressor wheel 81. The diffuser 83 introduces compressed air from the compressor wheel 81 and supplies the compressed air toward the combustor 85. The combustor 85 mixes the compressed air with fuel to generate combustion gas. The combustion gas is supplied to the turbine wheel 84. The turbine wheel 84 is rotated by the combustion gas. The combustion gas that has passed through the turbine wheel 84 is discharged as exhaust gas via the duct 86.

[0041] As shown in FIG. 1 , the rotating electric machine system 12 further includes a first holding portion 91 and a second holding portion 92. The first holding portion 91 and the second holding portion 92 are provided on an outer circumferential portion 180 of the rotating electric machine housing 18. The first holding portion 91 and the second holding portion 92 are components for holding the rotating electric machine housing 18 by a first support member 110 (see FIG. 5 ) provided on a structure 100 in which the rotating electric machine system 12 is installed. The first holding portion 91 and the second holding portion 92 protrude radially outward from an outer circumferential surface 182 of the rotating electric machine housing 18, which is curved in an arc shape. The arc-shaped outer circumferential surface 182 is part of the outer circumferential portion 180 of the rotating electric machine housing 18.

[0042] The first retaining portion 91 and the second retaining portion 92 are arranged at positions spaced apart from each other in the circumferential direction of the rotating electrical machine housing 18. In terms of the relative positional relationship between the first retaining portion 91 and the second retaining portion 92, the first retaining portion 91 is arranged at a relatively low position, and the second retaining portion 92 is arranged at a relatively high position.

[0043] 5, one first holding portion 91 and one second holding portion 92 constitute one set of rotating electric machine holding portions 90, and the two sets of rotating electric machine holding portions 90 are arranged symmetrically with respect to a virtual reference line Lv that is perpendicular to the axis of the rotor 38 (axis Ax of the rotating electric machine system 12). In FIG. 5, the virtual reference line Lv is a vertical line that intersects with the axis Ax of the rotor 38.

[0044] The first holding portion 91 is disposed at a position lower than the axis Ax of the rotor 38. The second holding portion 92 is disposed at a position higher than the axis Ax of the rotor 38. The separation angle θ between the first holding portion 91 and the second holding portion 92 of each pair of rotating electric machine holding portions 90, centered on the axis Ax of the rotor 38, is, for example, 120° or less. The separation angle θ is, for example, 100° or less. The separation angle θ is, for example, 30° or more. The separation angle θ is, for example, 60° or more.

[0045] The separation angle θ is preferably 85° to 95°. In Fig. 5, the separation angle θ is approximately 90°. The separation angle θ is the angle between the center position of the first holding portion 91 and the center position of the second holding portion 92, centered on the axis Ax of the rotor 38, when viewed in the axial direction of the rotating electrical machine system 12.

[0046] 1, the first retaining portion 91 and the second retaining portion 92 are disposed at positions spaced apart from each other in the axial direction of the rotating electric machine system 12. Specifically, as shown in FIG. 2, the first retaining portion 91 is disposed in a portion of the outer circumferential portion 180 of the rotating electric machine housing 18, the portion surrounding the first small diameter portion 441 of the rotating shaft 44 of the rotating electric machine housing 18. The first retaining portion 91 and the terminal casing 28 are disposed on the same circumference. That is, with respect to their positions in the axial direction of the rotating electric machine system 12, the arrangement area of the first retaining portion 91 and the arrangement area of the terminal casing 28 overlap.

[0047] The second retaining portion 92 is disposed at a position between the first retaining portion 91 and the second bearing 52 in the axial direction. The second retaining portion 92 is disposed between the terminal casing 28 and the second bearing 52 in the axial direction. The second retaining portion 92 is part of the outer circumferential portion 180 of the rotating electric machine housing 18 and is disposed in a portion of the rotating electric machine housing 18 that surrounds the permanent magnet 42.

[0048] In the following description, the direction from the second bearing 52 to the first bearing 50 (X1 direction) will be referred to as the "first axial direction." The direction from the first bearing 50 to the second bearing 52 (X2 direction) will be referred to as the "second axial direction."

[0049] The separation distance L between the first retaining portion 91 and the second retaining portion 92 in the axial direction is equal to or less than the axial length of the larger of the first retaining portion 91 and the second retaining portion 92 in the axial direction. The separation distance L is the axial distance between the end of the first retaining portion 91 in the second direction and the end of the second retaining portion 92 in the first direction. In this embodiment, the first retaining portion 91 is larger in the axial direction than the second retaining portion 92. Note that the second retaining portion 92 may also be larger in the axial direction than the first retaining portion 91. The first retaining portion 91 and the second retaining portion 92 may have the same size in the axial direction.

[0050] 1, the electrical component 60 is disposed at a position on the outer circumferential portion 180 of the rotating electrical machine housing 18 that is not between the first retaining portion 91 and the second retaining portion 92. The arrangement of the electrical component 60 relative to the first retaining portion 91 and the second retaining portion 92 satisfies at least one of the following first and second conditions. Hereinafter, the arrangement of the electrical component 60 relative to the first retaining portion 91 and the second retaining portion 92 will be simply referred to as the "arrangement of the electrical component 60."

[0051] Under the first condition, the electrical component 60 is arranged at a position offset in the circumferential direction with respect to the circumferential region from the first retaining portion 91 to the second retaining portion 92. Under the second condition, the electrical component 60 is arranged at a position offset in the axial direction with respect to the axial region from the first retaining portion 91 to the second retaining portion 92. In this embodiment, the arrangement of the electrical component 60 satisfies the first condition but does not satisfy the second condition. In another embodiment, the arrangement of the electrical component 60 may satisfy the second condition but not the first condition. The arrangement of the electrical component 60 may satisfy both the first and second conditions.

[0052] The combined power system 10 further includes a plurality of third holding portions 93. The plurality of third holding portions 93 are provided at intervals on the outer circumferential portion 140 of the internal combustion engine 14. The plurality of third holding portions 93 are components for holding the internal combustion engine 14 by a second support member 120 (FIG. 5) provided on the structure 100. The plurality of third holding portions 93 are provided at positions offset in the axial direction from the combustor 85. Specifically, the plurality of third holding portions 93 protrude radially outward from the outer surface of the tip end portion of the outer housing 782. The plurality of third holding portions 93 are arranged on a common imaginary circle centered on the axis Ax of the rotor 38.

[0053] As shown in Fig. 5, the circumferential positions of the multiple third holding parts 93 can be changed as appropriate depending on the installation mode of a structure 100, which is an object in which the combined power system 10 is to be disposed. The combined power system 10 is installed on a frame 102 extending in the vertical direction of the structure 100 via a first support member 110 and a second support member 120. The structure 100 is, for example, an aircraft (aircraft). To suit the installation mode shown in Fig. 5, the multiple third holding parts 93 are arranged at positions shifted to one side in the horizontal direction with respect to the axis Ax of the combined power system 10 (to the left of the internal combustion engine 14 in Fig. 5).

[0054] The first support member 110 has a first stay 112 and a second stay 114. One end of each of the first stay 112 and the second stay 114 is fixed to the frame 102. The other end of the first stay 112 is fixed to the first holding portion 91 via a first bracket 124. The other end of the second stay 114 is fixed to the second holding portion 92 via a second bracket 126. The first bracket 124 and the second bracket 126 are fixed to the first holding portion 91 and the second holding portion 92, respectively, by appropriate fasteners (bolts, etc.).

[0055] 5, the second support member 120 is one third stay 122. One end of the third stay 122 is fixed to the frame 102 of the structure 100. The other end of the third stay 122 is fixed to a plurality of third holding portions 93 by appropriate fasteners (bolts, etc.).

[0056] This embodiment has the following advantages.

[0057] 1, the rotating electric machine system 12 includes a first holding portion 91 and a second holding portion 92. The first holding portion 91 and the second holding portion 92 are arranged at positions spaced apart from each other in the circumferential direction of the rotating electric machine housing 18. An electrical component 60 is arranged at a position on the outer circumferential portion 180 of the rotating electric machine housing 18 that is not between the first holding portion 91 and the second holding portion 92.

[0058] 5, even if the structure 100 on which the rotating electric machine system 12 is installed is struck by lightning and some current flows into the rotating electric machine system 12, the current flows away from the electrical component 60, preventing damage to the electrical component 60. In other words, even if current flows from the structure 100 to the rotating electric machine system 12 via the first support member 110, the current flows through a portion of the outer circumferential portion 180 of the rotating electric machine housing 18 between the first retaining portion 91 and the second retaining portion 92. Therefore, the electrical component 60 can be protected from current caused by lightning.

[0059] The separation angle θ between the first holding portion 91 and the second holding portion 92, centered on the axis Ax of the rotor 38, is within 120°. With this configuration, even if the structure 100 on which the rotating electric machine system 12 is installed is struck by lightning and some current flows through the rotating electric machine system 12, the current path between the first holding portion 91 and the second holding portion 92 can be further limited. Therefore, damage to the electrical component 60 in the event of a lightning strike can be more effectively prevented.

[0060] The separation angle θ between the first holding portion 91 and the second holding portion 92, centered on the axis Ax of the rotor 38, is within 100°. With this configuration, even if the structure 100 on which the rotating electrical machine system 12 is installed is struck by lightning and some current flows through the rotating electrical machine system 12, the current path between the first holding portion 91 and the second holding portion 92 can be shortened. This makes it possible to more effectively prevent damage to the electrical components 60 when struck by lightning.

[0061] 2, the separation distance L between the first retaining portion 91 and the second retaining portion 92 in the axial direction of the rotor 38 is equal to or less than the axial length of the larger of the first retaining portion 91 and the second retaining portion 92. With this configuration, the rotating electrical machine system 12 can be well supported by the first retaining portion 91 and the second retaining portion 92, which have a short separation distance L between them in the axial direction.

[0062] The rotating shaft 44 has a large diameter portion 440 that supports the permanent magnet 42, and a first small diameter portion 441 and a second small diameter portion 442 that protrude from the large diameter portion 440 in opposite directions along the axial direction of the rotor 38. A first retaining portion 91 is disposed in a portion of the outer circumferential portion 180 of the rotating electric machine housing 18 that surrounds the first small diameter portion 441. With this configuration, the first retaining portion 91 is disposed near the vibration source, thereby effectively suppressing vibration of the rotating shaft 44.

[0063] The second retaining portion 92 is disposed at a position between the first retaining portion 91 and the second bearing 52 in the axial direction. The separation distance L between the first retaining portion 91 and the second retaining portion 92 in the axial direction of the rotor 38 is equal to or less than the axial length of the larger of the first retaining portion 91 and the second retaining portion 92. With this configuration, the second retaining portion 92 is disposed near the vibration source, thereby effectively suppressing vibration of the rotating shaft 44.

[0064] 5, a first holding portion 91 and a second holding portion 92 constitute one set of rotating electric machine holding portions 90, and the two sets of rotating electric machine holding portions 90 are arranged line-symmetrically with respect to a virtual reference line Lv that is perpendicular to the axis Ax of the rotor 38. With this configuration, the two sets of rotating electric machine holding portions 90 are arranged line-symmetrically, which improves the degree of freedom in the installation location of the rotating electric machine system 12 relative to the structure 100.

[0065] 1, the combined power system 10 includes a rotating electric machine system 12 and an internal combustion engine 14. A plurality of third holding portions 93 are provided at intervals on an outer circumferential portion 140 of the internal combustion engine 14. The plurality of third holding portions 93 are provided at positions axially offset from the combustor 85. This configuration can provide good support for the combined power system 10 including the rotating electric machine system 12 and the internal combustion engine 14. Furthermore, because the plurality of third holding portions 93 are provided at positions axially offset from the combustor 85 on the outer circumferential portion 140 of the internal combustion engine 14, the amount of heat transfer from the internal combustion engine 14 can be minimized, thereby maintaining the internal combustion engine 14 in good condition.

[0066] The plurality of third holding portions 93 are arranged on a common imaginary circle centered on the axis Ax of the internal combustion engine 14. According to this configuration, the internal combustion engine 14 is well supported by the plurality of third holding portions 93 arranged on the common imaginary circle, and vibrations of the combined power system 10 can be effectively suppressed.

[0067] As shown in Fig. 6, the combined power system 10 may be installed on the floor 103 of the structure 100 via a first support member 110 and a second support member 120. In this case, the first stay 112 of the first support member 110 is fixed to one of the first holding portions 91, and the second stay 114 is fixed to the other first holding portion 91. To conform to the installation mode shown in Fig. 6, the multiple third holding portions 93 are arranged below the axis Ax of the combined power system 10. Note that, as another installation mode, the combined power system 10 may be suspended from the ceiling of the structure 100 via the first support member 110 and the second support member 120.

[0068] The following additional notes are further disclosed regarding the above embodiment.

[0069] (Appendix 1) The rotating electric machine system (12) of the present disclosure is a rotating electric machine system comprising: a rotating electric machine (16) having a rotor (38) including a permanent magnet (42) and a rotating shaft (44); and a rotating electric machine housing (18) that rotatably supports the rotating shaft, and further comprising: an electrical component (60) provided in the rotating electric machine housing; and a first retaining portion (91) and a second retaining portion (92) that are provided on the outer periphery (180) of the rotating electric machine housing and that hold the rotating electric machine housing by a support member provided on a structure (100) in which the rotating electric machine system is installed, the first retaining portion and the second retaining portion being arranged at positions spaced apart from each other in the circumferential direction of the rotating electric machine housing, and the electrical component being arranged at a position on the outer periphery that is not between the first retaining portion and the second retaining portion.

[0070] (Supplementary Note 2) In the rotating electric machine system described in Supplementary Note 1, the separation angle (θ) between the first holding portion and the second holding portion about the axis (Ax) of the rotor may be within 120°.

[0071] (Supplementary Note 3) In the rotating electrical machine system according to Supplementary Note 2, the separation angle may be within 100°.

[0072] (Appendix 4) In the rotating electric machine system described in Appendix 1 or 2, the separation distance (L) between the first retaining portion and the second retaining portion in the axial direction of the rotor may be less than or equal to the length in the axial direction of the larger of the first retaining portion and the second retaining portion.

[0073] (Appendix 5) In the rotating electric machine system described in any one of Appendices 1 to 4, the rotating shaft may have a large diameter portion (440) that supports the permanent magnet, and a first small diameter portion (441) and a second small diameter portion (442) that protrude from the large diameter portion in opposite directions in the axial direction of the rotor, a first bearing (50) may be arranged between the rotating electric machine housing and the first small diameter portion, a second bearing (52) may be arranged between the rotating electric machine housing and the second small diameter portion, and the first retaining portion may be arranged in a part of the outer periphery that surrounds the first small diameter portion of the rotating electric machine housing.

[0074] (Appendix 6) In the rotating electric machine system described in Appendix 5, the second retaining portion may be positioned between the first retaining portion and the second bearing in the axial direction, and the separation distance between the first retaining portion and the second retaining portion in the axial direction may be less than or equal to the length in the axial direction of the larger retaining portion of the first retaining portion and the second retaining portion in the axial direction.

[0075] (Supplementary Note 7) In the rotating electric machine system according to Supplementary Note 6, the second holding portion may be disposed in a part of the outer periphery and surrounding the permanent magnet in the rotating electric machine housing.

[0076] (Appendix 8) In the rotating electric machine system described in any one of Appendices 1 to 7, the first holding portion and the second holding portion may be a set of rotating electric machine holding portions (90), and two sets of the rotating electric machine holding portions may be arranged symmetrically with respect to a virtual reference line (Lv) perpendicular to the axis of the rotor.

[0077] (Appendix 9) A combined power system (10) of the present disclosure is a combined power system comprising: a rotating electric machine system according to any one of Appendices 1 to 8; an internal combustion engine (14) having an output shaft (80) that rotates integrally with the rotating shaft; and a combustor (85), and further comprising a plurality of third holding portions (93) that are spaced apart from one another on an outer periphery (140) of the internal combustion engine and that hold the internal combustion engine by other support members provided on the structure, and the plurality of third holding portions are provided at positions offset from the combustor in the axial direction of the internal combustion engine.

[0078] (Supplementary Note 10) In the compound power system described in Supplementary Note 9, a plurality of the third holding portions may be arranged on a common imaginary circle centered on an axis (Ax) of the internal combustion engine.

[0079] Although the present disclosure has been described in detail, the present disclosure is not limited to the individual embodiments described above. Various additions, substitutions, modifications, partial deletions, etc. are possible in these embodiments without departing from the gist of the present disclosure or the spirit of the present disclosure derived from the content of the claims and their equivalents. These embodiments can also be implemented in combination. For example, in the above-described embodiments, the order of each operation and the order of each process are shown as examples and are not limited to these. The same applies when numerical values or mathematical expressions are used in the description of the above-described embodiments. [Explanation of symbols]

[0080] 10...Composite power system 12...Rotating electric system 14...Internal combustion engine 16...Rotating electric machine 18... Rotating electric machine housing 38... Rotor 44...Rotating shaft 60...Electrical component 91...First holding part 92...Second holding part 93…Third holding part

Claims

1. a rotating electric machine having a rotor including a permanent magnet and a rotating shaft; a rotating electric machine housing that rotatably supports the rotating shaft; A rotating electrical machine system comprising: an electrical component provided in the rotating electrical machine housing; a first holding portion and a second holding portion provided on an outer periphery of the rotating electric machine housing for holding the rotating electric machine housing by a support member provided on a structure on which the rotating electric machine system is installed; the first holding portion and the second holding portion are arranged at positions spaced apart from each other in the circumferential direction of the rotating electric machine housing, The electrical component is disposed at a position on the outer periphery that is not between the first holding portion and the second holding portion.

2. 2. The rotating electrical machine system according to claim 1, a separation angle between the first holding portion and the second holding portion about the axis of the rotor is within 120°;

3. 3. The rotating electrical machine system according to claim 2, A rotating electric machine system, wherein the separation angle is within 100°.

4. 3. The rotating electrical machine system according to claim 1, A rotating electric system, wherein the separation distance between the first retaining portion and the second retaining portion in the axial direction of the rotor is less than or equal to the length in the axial direction of the larger of the first retaining portion and the second retaining portion.

5. 2. The rotating electrical machine system according to claim 1, the rotating shaft has a large diameter portion that supports the permanent magnet, and a first small diameter portion and a second small diameter portion that protrude from the large diameter portion in opposite directions to each other in the axial direction of the rotor, a first bearing is disposed between the rotating electrical machine housing and the first small diameter portion; a second bearing is disposed between the rotating electrical machine housing and the second small diameter portion; a rotating electric machine system, wherein the first holding portion is disposed in a portion of the outer periphery that surrounds the first small diameter portion of the rotating electric machine housing;

6. 6. The rotating electrical machine system according to claim 5, the second retaining portion is disposed at a position between the first retaining portion and the second bearing in the axial direction, A rotating electric system, wherein the separation distance between the first retaining portion and the second retaining portion in the axial direction is equal to or less than the length in the axial direction of the larger of the first retaining portion and the second retaining portion.

7. 7. The rotating electrical machine system according to claim 6, a rotating electric machine system, wherein the second holding portion is disposed in a portion of the rotating electric machine housing that is part of the outer periphery and surrounds the permanent magnet;

8. 2. The rotating electrical machine system according to claim 1, A rotating electric machine system in which the first holding unit and the second holding unit constitute one set of rotating electric machine holding units, and the two sets of rotating electric machine holding units are arranged symmetrically with respect to a virtual reference line perpendicular to the axis of the rotor.

9. a rotating electrical machine system according to claim 1; 1. A combined power system comprising: an internal combustion engine having an output shaft that rotates integrally with the rotary shaft; and a combustor, a plurality of third holding portions provided at intervals on the outer periphery of the internal combustion engine, for holding the internal combustion engine by other support members provided on the structure; A combined power system, wherein the third holding portions are provided at positions offset from the combustor in the axial direction of the internal combustion engine.

10. 10. The combined power system of claim 9, A complex power system, wherein a plurality of the third holding portions are arranged on a common imaginary circle centered on the axis of the internal combustion engine.

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