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    • 10. 发明授权
    • Permanent magnet machine
    • 永磁机
    • US06946766B2
    • 2005-09-20
    • US10229506
    • 2002-08-28
    • Horst E. GaryRichard E. Hartsfield, Jr.Mark E. Carrier
    • Horst E. GaryRichard E. Hartsfield, Jr.Mark E. Carrier
    • H02K1/27H02K21/16H02K21/12H02K1/17
    • H02K1/276H02K21/16
    • An interior permanent magnet machine including a rotor stack defining at least two adjacent magnet retention slots and a plurality of permanent magnets positioned within the interior of the rotor, wherein the radial thickness of the rotor that is above a given magnet retention slot transitions from a first radial thickness to a bridge region having a second radial thickness that is less than the first radial thickness. The bridge region is positioned between the two magnet retention slots and the transition to the bridge region occurs within an area falling within a defined angular expanse. Areas of low permeability are positioned below the bridge region between the ends of the adjacent permanent magnets such that (i) there are no direct linear paths between the end edges of the two adjacent magnets that do not pass through an area of low permeability, and (ii) that there are no direct linear paths that extend radially from the outer portion of the rotor to the interior of the rotor, between the permanent magnets, that do not also pass through an area of low permeability.
    • 一种内部永磁体机器,其包括限定至少两个相邻磁体保持狭槽的转子堆叠和位于转子内部的多个永磁体,其中在给定磁体保持狭槽上方的转子的径向厚度从第一 径向厚度到具有小于第一径向厚度的第二径向厚度的桥接区域。 桥接区域位于两个磁体保持槽之间,并且在位于限定角度范围内的区域内发生向桥区域的过渡。 低渗透性区域位于相邻永磁体的端部之间的桥接区域的下方,使得(i)在两个相邻磁体的不通过低磁导率区域的端部边缘之间没有直接的线性路径,以及 (ii)在永磁体之间没有从转子的外部部分径向延伸到转子内部的直接线性路径,也不通过低渗透区域。