公开(公告)号：US07906882B2

公开(公告)日：2011-03-15

申请号：US12555223

申请日：2009-09-08

申请人： Shigeru Okuma ,  Shinji Doki ,  Mutsuo Tomita ,  Mitsuhiko Sato ,  Seiichi Kaneko

发明人： Shigeru Okuma ,  Shinji Doki ,  Mutsuo Tomita ,  Mitsuhiko Sato ,  Seiichi Kaneko

IPC分类号： H02K1/27

CPC分类号： H02K1/2766 ,  H02K1/276 ,  H02K29/03

摘要： Permanent magnets 52a1, 52a2 are inserted into magnet insert holes 51a1, 51a4 formed in a main magnetic pole 50A of a rotor 50. An outer circumferential surface of the rotor includes a first outer circumferential surface portion 50a which intersects with a d-axis and second outer circumferential surface portions 50da, 50ab which intersect with a q-axis. A radius R2 of curvature of the second outer circumferential surface portions 50da, 50ab is larger than a radius of curvature of the first outer circumferential surface portions 50a. Recesses 50a1, 50a2 are formed in the second outer circumferential surface portions 50da, 50ab and in a position to face end walls 51a2, 51a5 of the magnet insert holes 51a1, 51a4 which are adjacent to the outer circumferential surface of the rotor. It is constructed such that [(74/P)°≦θ≦(86/P)°] and [(16/P)°≦α≦(48/P)°], where θ is a mechanical angle of the first outer circumferential surface portion 50a, P is the number of pairs of poles of the rotor 50, and α is a mechanical angle of the recesses 50a1, 50a2.

摘要翻译： 永磁体52a1,52a2插入形成在转子50的主磁极50A上的磁铁插入孔51a1,51a4中。转子的外周面包括与d轴相交的第一外周面部50a和第二外周面 与q轴交叉的外周面部50da，50ab。 第二外周面部50da，50ab的曲率半径R2大于第一外周面部50a的曲率半径。 凹部50a1,50a2形成在第二外周面部50da，50ab中，并且位于与转子的外周面相邻的磁铁插入孔51a1,51a4的端壁51a2,51a5的位置。 它被构造成使得[（74 / P）°＆nlE;＆thetas;＆nlE;（86 / P）°]和[（16 / P）°＆nlE;α＆nlE;（48 / P）°] 是第一外周面部50a的机械角度，P是转子50的极对数，α是凹部50a1,50a2的机械角度。

公开(公告)号：US07605510B2

公开(公告)日：2009-10-20

申请号：US11563316

申请日：2006-11-27

申请人： Shigeru Okuma ,  Shinji Doki ,  Mutsuo Tomita ,  Mitsuhiko Sato ,  Seiichi Kaneko

发明人： Shigeru Okuma ,  Shinji Doki ,  Mutsuo Tomita ,  Mitsuhiko Sato ,  Seiichi Kaneko

IPC分类号： H02K21/12

CPC分类号： H02K1/2766 ,  H02K1/276 ,  H02K29/03

摘要： Permanent magnets 52a1, 52a2 are inserted into magnet insert holes 51a1, 51a4 formed in a main magnetic pole 50A of a rotor 50. An outer circumferential surface of the rotor includes a first outer circumferential surface portion 50a which intersects with a d-axis and second outer circumferential surface portions 50da, 50ab which intersect with a q-axis. A radius R2 of curvature of the second outer circumferential surface portions 50da, 50ab is larger than a radius of curvature of the first outer circumferential surface portions 50a. Recesses 50a1, 50a2 are formed in the second outer circumferential surface portions 50da, 50ab and in a position to face end walls 51a2, 51a5 of the magnet insert holes 51a1, 51a4 which are adjacent to the outer circumferential surface of the rotor. It is constructed such that [(74/P)°≦θ≦(86/P)°] and [(16/P)°≦α≦(48/P)°], where θ is a mechanical angle of the first outer circumferential surface portion 50a, P is the number of pairs of poles of the rotor 50, and α is a mechanical angle of the recesses 50a1, 50a2.

摘要翻译： 永磁体52a1,52a2插入形成在转子50的主磁极50A上的磁铁插入孔51a1,51a4中。转子的外周面包括与d轴相交的第一外周面部50a和第二外周面 与q轴交叉的外周面部50da，50ab。 第二外周面部50da，50ab的曲率半径R2大于第一外周面部50a的曲率半径。 凹部50a1,50a2形成在第二外周面部50da，50ab中，并且位于与转子的外周面相邻的磁铁插入孔51a1,51a4的端壁51a2,51a5的位置。 它被构造成使得[（74 / P）°<=θ<=（86 / P）°]和[（16 / P）°<=α<=（48 / P）°] 第一外周面部分50a的角度，P是转子50的极对数，α是凹部50a1,50a2的机械角度。