公开(公告)号：US20250030322A1

公开(公告)日：2025-01-23

申请号：US18356859

申请日：2023-07-21

Applicant: DANA TM4 ITALIA S.R.L.

Inventor： Walter FAEDO ,  Pierpaolo ZULPO

IPC: H02K15/03 ,  H02K15/12

Abstract: Methods and systems are disclosed for reducing ripple torque associated with internal bridges arranged within one or more barriers of a rotor lamination stack and increasing mechanical strength when the rotor lamination stack is configured without internal bridges. In one example, a rotor lamination stack includes at least one interlocking element arranged in one or more barriers. In another example, the at least one interlocking elements may be fabricated individually and independent of the rotor lamination stack or by employing the rotor lamination stack as a mold.