Method and apparatus for activating an electric machine, and electric machine
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
H01F-013/00
H02K-015/03
출원번호
US-0851782
(2010-08-06)
등록번호
US-8358189
(2013-01-22)
우선권정보
IT-MI2009A1443 (2009-08-07)
발명자
/ 주소
Kaessner, Thomas
Fasolo, Alessandro
출원인 / 주소
Willic S.AR.L.
인용정보
피인용 횟수 :
3인용 특허 :
215
초록▼
A method of activating an electric machine having a stator, and a rotor which rotates about an axis with respect to the stator; the stator having a plurality of stator segments arranged about the axis; the rotor having modules made of magnetizable material and arranged about the axis; and the method
A method of activating an electric machine having a stator, and a rotor which rotates about an axis with respect to the stator; the stator having a plurality of stator segments arranged about the axis; the rotor having modules made of magnetizable material and arranged about the axis; and the method including the steps of connecting the rotor to the stator by means of a bearing; and magnetizing the modules of magnetizable material when the rotor is connected to the stator.
대표청구항▼
1. An electric machine comprising: a stator including a plurality of stator segments arranged about a first axis; anda rotor configured to rotate about the first axis with respect to the stator, the rotor including a plurality of modules made of magnetizable material and arranged about the first axi
1. An electric machine comprising: a stator including a plurality of stator segments arranged about a first axis; anda rotor configured to rotate about the first axis with respect to the stator, the rotor including a plurality of modules made of magnetizable material and arranged about the first axis; anda single bearing connected to the stator and the rotor;the stator configured to house a magnetizing device inside a seat configured for at least one of the stator segments, the magnetizing device configured to magnetize the modules of magnetizable material of the rotor and configured to be inserted externally from an opposite side of the bearing. 2. The electric machine of claim 1, wherein the stator is configured to temporarily house the magnetizing device inside the seat. 3. An electric machine activating apparatus comprising: a magnetizing device;a frame configured to fit the magnetizing device to a stator of an electric machine, the frame being configured to be inserted inside a seat of the stator in place of at least one stator segment; anda precision positioning system having a precision rotation device fitted to a rotor of the electric machine and to the stator and configured to rotate the rotor to position the magnetizing device facing at least one rotor segment of the rotor, said precision rotation device including a precision axial feed device configured to move the magnetizing device in a direction corresponding to an axis and to position the magnetizing device facing at least one module of magnetizable material of the rotor. 4. The electric machine activating apparatus of claim 3, wherein the frame is configured to fit to an outer cylinder of the stator such that the magnetizing device faces a rotor of the electric machine. 5. The electric machine activating apparatus of claim 3, wherein the magnetizing device is supported by the frame, and is configured to magnetize a rotor of the electric machine with magnetizing flux. 6. The electric machine activating apparatus of claim 3, wherein the precision axial feed device includes a screw-nut screw system. 7. The electric machine activating apparatus of claim 3, wherein the precision positioning system includes a fine-adjustment device configured to move the magnetizing device crosswise to the axis with respect to the frame. 8. The electric machine activating apparatus of claim 3, wherein each module has a first plane of symmetry, the magnetizing device has two second faces symmetrical with respect to a second plane of symmetry, and the precision positioning system includes a fine-adjustment device configured to fine-adjust the position of the magnetizing device. 9. The electric machine activating apparatus of claim 8, wherein the fine-adjustment device is configured to fine-adjust the position of the magnetizing device such that the second plane of symmetry coincides with the first plane of symmetry of at least one of the modules. 10. The electric machine activating apparatus of claim 3, which includes a temperature sensor. 11. A method of activating an electric machine including a stator having a plurality of stator segments arranged about a first axis, a rotor including a plurality of modules made of magnetizable material and arranged about the first axis, said rotor configured to rotate about the first axis with respect to the stator, said method comprising: connecting the rotor to the stator by a bearing;inserting a magnetizing device in a frame;inserting the frame inside a seat of the electric machine from the opposite side of the bearing; andmagnetizing said magnetizable material of the modules when the rotor is connected to the stator. 12. The method of claim 11, which includes fitting each of said modules to the rotor when said modules are each non-magnetized. 13. The method of claim 12, which includes: fitting at least two of the plurality of stator segments to an outer cylinder of the stator, to define the seat configured to house at least one further one of the stator segments; andinserting the magnetizing device inside the seat. 14. The method of claim 13, wherein the rotor includes rotor segments which include said modules aligned parallel to the first axis, and the method includes magnetizing each module of the rotor segment facing the magnetizing device. 15. The method of claim 13, wherein each of said modules has a first plane of symmetry, the magnetizing device has two second faces symmetrical with respect to a second plane of symmetry, and the method includes positioning the magnetizing device such that the second plane of symmetry coincides with the first plane of symmetry of at least one of the modules. 16. The method of claim 13, wherein the rotor includes a plurality of pairs of magnetic guides having respective first faces and configured to conduct a magnetic flux coupled to the respective modules by the first faces, the magnetizing device having two second faces, and providing magnetizing flux via the second faces, and the method includes positioning the magnetizing device such that the second faces of the magnetizing device face the first faces of at least one of the pairs of magnetic guides. 17. The method of claim 16, which includes moving the magnetizing device along the rotor segment in a direction parallel to the first axis, such that the second faces of the magnetizing device face the first faces of at least one further pair of the magnetic guides. 18. The method of claim 16, which includes rotating the rotor to position the magnetizing device facing a further one of the rotor segments to be magnetized. 19. The method of claim 16, which includes fine-adjusting the position of the magnetizing device by moving the magnetizing device angularly or tangentially with respect to the stator. 20. The method of claim 13, which includes: extracting the magnetizing device from the seat, and inserting the further one of the stator segments inside the seat. 21. The method of claim 11, which includes controlling the temperature of the modules at least when magnetizing the modules. 22. The method of claim 11, which includes simultaneously magnetizing a plurality of the modules. 23. A method of activating an electric machine, said method comprising: connecting a rotor to a stator, the rotor configured to rotate about a first axis with respect to the stator, the rotor including: (a) a plurality of modules made of magnetizable material, said plurality of modules: (i) arranged about the first axis, and(ii) fitted to the rotor when said modules are each non-magnetized, and(b) a plurality of pairs of magnetic guides, each having respective first faces configured to conduct a magnetic flux coupled to said respective modules by the first faces,the stator including a plurality of stator segments arranged about the first axis, wherein at least two of the plurality of stator segments are fitted to an outer cylinder of the stator to define a seat configured to house at least another one of said stator segments;inserting a magnetizing device inside the seat, the magnetizing device having two second faces configured to provide the magnetizing flux;positioning the magnetizing device such that the second faces of the magnetizing device face the first faces of at least one of the pairs of magnetic guides;magnetizing said plurality of modules of magnetizable material when the rotor is connected to the stator; andmoving the magnetizing device along a rotor segment of the rotor in a direction corresponding to the first axis such that the second faces of the magnetizing device face the first faces of at least another one of the plurality of pairs of magnetic guides. 24. The method of claim 23, wherein each of said modules has a first plane of symmetry, the magnetizing device has two second faces symmetrical with respect to a second plane of symmetry and which includes positioning the magnetizing device such that the second plane of symmetry coincides with the first plane of symmetry of at least one of the modules. 25. The method of claim 23, which includes positioning the magnetizing device such that a second plane of symmetry coincides with a first plane of symmetry of at least one of the modules, wherein each of said modules has the first plane of symmetry and the magnetizing device has two second faces symmetrical with respect to the second plane of symmetry. 26. The method of claim 23, which includes rotating the rotor to position the magnetizing device facing another one of a plurality of rotor segments of the rotor to be magnetized. 27. The method of claim 23, which includes fine-adjusting the position of the magnetizing device by moving the magnetizing device angularly or tangentially with respect to the stator. 28. The method of claim 23, which includes: extracting the magnetizing device from the seat, andinserting one of the stator segments inside the seat. 29. The method of claim 23, which includes, prior to magnetizing said plurality of modules; extracting at least one of the stator segments to define the seat andinserting the magnetizing device inside the seat. 30. The method of claim 23, which includes controlling the temperature of the modules. 31. The method of claim 30, which includes controlling the temperature of the modules at least when magnetizing the modules. 32. The method of claim 23, which includes simultaneously magnetizing a plurality of said modules. 33. The method of claim 23, which includes connecting the rotor to the stator by a bearing.
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