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Rotating electric machine and wind power generation system

A technology of rotating motors and rotating shafts, which is applied in wind power generation, wind engines, wind motor combinations, etc. It can solve the problems of reduced durability of rotors and residual stress, and achieve the effect of simple assembly and improved durability

Inactive Publication Date: 2012-07-25
YASKAWA DENKI KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the IPM motor disclosed in Japanese Patent Application Laid-Open No. 2000-324738, since the iron core and the rotating shaft are baked in when the rotor is assembled, there is a problem that the rotor is burnt after assembly. Residual stress caused by embedded heat (burning embedded stress)
In this way, when the rotor is assembled by caulking, there is a problem that the durability of the rotor is reduced due to the generation of residual stress in the rotor.
In addition, in the case of burning-in when the rotor is assembled, there is also a problem that heating equipment for burning-in is required.

Method used

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  • Rotating electric machine and wind power generation system
  • Rotating electric machine and wind power generation system
  • Rotating electric machine and wind power generation system

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0036] First, refer to figure 1 The configuration of a wind power generation system 100 including the generator 1 according to the first embodiment of the present invention will be described. In addition, the generator 1 is an example of the "rotating electric machine" of the present invention.

[0037] Such as figure 1 As shown, the wind power generation system 100 is composed of a generator 1 , a nacelle 2 , a rotor hub 3 , blades 4 and a tower (support column) 5 . The generator 1 is accommodated inside the nacelle 2 . In addition, the rotor hub 3 is connected to a shaft 21 described later of the generator 1 . In addition, a plurality of blades 4 are attached to the rotor hub 3 . In addition, the nacelle 2 is mounted on a tower 5 .

[0038] Next, refer to Figure 2 to Figure 9 The configuration of the generator 1 according to the first embodiment of the present invention will be described.

[0039] Such as figure 2 As shown, the generator 1 includes a stator 10 and ...

no. 2 Embodiment approach

[0089] Next, refer to Figure 12 as well as Figure 13 The configuration of the rotor 20a of the generator 1a according to the second embodiment of the present invention will be described. In this second embodiment, an example in which the permanent magnet 32 ​​( 33 ) is formed to have a substantially rectangular cross-section as viewed from the axial direction is described. The above-mentioned first embodiment is different in cross section. In addition, the generator 1a is an example of the "rotating electric machine" of the present invention.

[0090] Such as Figure 12 as well as Figure 13 As shown, the rotor core 25a and the rotor core 25b are stacked in the axial direction in a state shifted by a predetermined angle (180 degrees in electrical angle) along the rotation direction, thereby constituting the rotor of the rotor 20a of the second embodiment. Iron core 25.

[0091] The rotor core 25a ( 25b ) is configured to be divisible including a plurality of core parts...

no. 3 Embodiment approach

[0100] Next, refer to Figure 14 ~ Figure 17The configuration of the rotor 20b of the generator 1b according to the third embodiment of the present invention will be described. In this third embodiment, an example in which the outer peripheral surface of the permanent magnet 30 ( 31 ) is exposed is described, which is different from the above-mentioned first embodiment in which the outer peripheral surface of the permanent magnet 30 ( 31 ) is covered with the magnet covering part 243 . . In addition, the generator 1b is an example of the "rotating electric machine" of the present invention.

[0101] Such as Figure 14 ~ Figure 17 As shown, the rotor core 26a and the rotor core 26b are stacked in the axial direction in a state shifted by a predetermined angle (180 degrees in electrical angle) along the rotation direction, thereby constituting the rotor of the rotor 20b of the third embodiment. Core 26.

[0102] Such as Figure 14 as well as Figure 15 As shown, the rotor ...

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Abstract

This rotating electric machine includes a rotor including a rotating shaft portion, a rotor yoke surrounding the rotating shaft portion and a rotor core, arranged on the outer peripheral surface of the rotor yoke, having a plurality of permanent magnets circumferentially arranged thereon at intervals, and a stator arranged to be opposed to the outer peripheral surface of the rotor, while the rotor yoke and the inner peripheral portion of the rotor core are fixed to each other with a fixing member.

Description

technical field [0001] The invention relates to a rotating electrical machine and a wind power generation system. Background technique [0002] Conventionally, there is known a rotating electrical machine including a rotor including a rotor core in which a plurality of permanent magnets are arranged at intervals in a circumferential shape (circumferential shape). [0003] Japanese Unexamined Patent Application Publication No. 2000-324738 discloses an IPM motor (rotating electrical machine): the IPM motor includes an iron core (rotor iron) in which a plurality of rare earth magnets (permanent magnets) are circumferentially embedded at intervals. core) rotor. In assembling the rotor of this IPM motor, the rotating shaft is fixed to the iron core by caulking the rotating shaft into the inner peripheral portion of the iron core. [0004] However, in the IPM motor disclosed in Japanese Patent Application Laid-Open No. 2000-324738, since the iron core and the rotating shaft are ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/27H02K15/03F03D9/00
CPCH02K1/276H02K7/1838Y02E10/725H02K16/02H02K1/30Y02E10/721H02K1/2746Y02E10/72
Inventor 宫本恭祐津曲宏森下大辅
Owner YASKAWA DENKI KK
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