IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0478052
(2002-12-19)
|
우선권정보 |
JP-0387442 (2001-12-20) |
국제출원번호 |
PCT/JP02/13309
(2003-11-18)
|
§371/§102 date |
20031118
(20031118)
|
국제공개번호 |
WO03/05504
(2003-07-03)
|
발명자
/ 주소 |
- Nakano, Masatsugu
- Kometani, Haruyuki
- Kawamura, Mitsuhiro
- Ikeda, Yuji
|
출원인 / 주소 |
- Mitsubishi Denki Kabushiki Kaisha
- Toshiba Mitsubishi-Electric Industrial Systems Corporation
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
11 인용 특허 :
3 |
초록
▼
A dynamo electric machine includes a rotor having magnetic poles with permanent magnets and a stator having armature windings concentratedly wound around teeth. When the number of pole pairs of the magnetic poles of the rotor is P, diameter of the rotor is D (meters), and a spatial harmonic order of
A dynamo electric machine includes a rotor having magnetic poles with permanent magnets and a stator having armature windings concentratedly wound around teeth. When the number of pole pairs of the magnetic poles of the rotor is P, diameter of the rotor is D (meters), and a spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the rotor is N ((N=P to the 1.5th power)×(N to the minus 4-th power)×(the square of P)×D<0.6 (in meters).
대표청구항
▼
1. A permanent magnet dynamo electric machine comprising:a rotor with a plurality of magnetic poles including permanent magnets; and a stator with armature windings concentratedly wound around teeth, wherein, when number of pole pairs of the rotor is P, diameter of the rotor is D (in meters), spatia
1. A permanent magnet dynamo electric machine comprising:a rotor with a plurality of magnetic poles including permanent magnets; and a stator with armature windings concentratedly wound around teeth, wherein, when number of pole pairs of the rotor is P, diameter of the rotor is D (in meters), spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the stator is N (a mechanical angle 360 degrees is a 1-st order), and output of the permanent magnet dynamo electric machine is Pout, and D is at least 0.00045Pout+1.2, a parameter X (in meters) used to evaluate rate of eddy current loss in the rotor is X=(N+P)1.5N?4P2D, and P, D, and N are selected so that X is smaller than a predetermined value.2. The permanent magnet dynamo electric machine according to claim 1, wherein X<0.6 (in meters).3. The permanent magnet dynamo electric machine according to claim 1, wherein, when number of slots of the stator is S, 2P<S.4. The permanent magnet dynamo electric machine according to claim 1, wherein, when number of slots fo the stator is S, 2P:S=2:3, and P?0.5D<1.85 (in meters).5. The permanent magnet dynamo electric machine according to claim 1, wherein, when the number of slots of the stator is S, 2P:S=8:9, and P?0.5D<0.43 (in meters).6. The permanent magnet dynamo electric machine according to claim 1, wherein, when number of slots of the stator is S, 2P:S=10:12, and P?0.5D<0.62 (in meters).7. The permanent magnet dynamo electric machine according to claim 1, wherein the permanent magnets of the magnetic poles of the rotor are axially divided in a partition construction.8. A permanent magnet synchronous generator for wind power generation comprising:a rotor with a plurality of magnetic poles including permanent magnets; and a stator with armature windings concentratedly wound around teeth, wherein, when number of pole pairs of the rotor is P, diameter of the rotor is D (in meters), spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the stator is N (a mechanical angle 360 degrees is a 1-st order), output of the permanent magnet dynamo electric machine is Pout, and D is at least 0.0045Pout+1.2, a parameter X (in meters) used to evaluate rate of eddy current loss in the rotor is X=(N+P)1.5N?4P2D, and P, D, and N are selected so that X is smaller than a predetermined value.9. The permanent magnet synchronous generator for wind power generation according to claim 8, wherein x<0.6 (in meters).10. A permanent magnet dynamo electric machine comprising:a rotor with a plurality of magnetic poles including permanent magnets; and a stator with armature windings concentratedly wound around teeth, wherein, when number of pole pairs of the rotor is P, diameter of the rotor is D (in meters), spatial harmonic order of a predetermined harmonic component of an armature magnetomotive force of the stator is N (a mechanical angle 360 degrees is a 1-st order), output of the permanent magnet dynamo electric machine is Pout, and D is at least 0.0045Pout+1.2, a parameter X (in meters) used to evaluate rate of eddy current loss in the rotor is X=(N+P)1.5N?4P2D, and P, D, and N are selected so that X is smaller than a predetermined value.11. The permanent magnet dynamo electric machine according to claim 10, wherein X<0.6 (in meters).12. The permanent magnet dynamo electric machine according to claim 10, wherein, when number of slots of the stator is S, 2P<S.13. The permanent magnet dynamo electric machine according to claim 10, wherein, when the number of slots of the stator is S, 2P:S=2:3, and P?0.5D<1.85 (in meters).14. The permanent magnet dynamo electric machine according to claim 10, wherein, when number of slots of the stator is S, 2P:S=8:9, and P?0.5D<0.43, (in meters).15. The permanent magnet dynamo electric machine according to claim 10, wherein, when the number of slots of the stator is S, 2P:S=10:12, and P?0.5D<0.62 (in meters).16. The permanent magnet dynamo electric machine according to claim 10, wherein the permanent magnets of the magnetic poles of the rotor are axially divided in a partition construction.
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