公开(公告)号：US20220009608A1

公开(公告)日：2022-01-13

申请号：US17413034

申请日：2019-12-16

Applicant: ABB Oy

Inventor： Aki MAKSIMAINEN ,  Veli-Pekka PELJO ,  Petri Pellinen

IPC: B63H5/03 ,  B63H21/17

Abstract: A marine propulsion unit including a rotary casing rotatable about a central axis A, and blades extending axially from the rotary casing for rotation with the rotary casing about the central axis A, wherein each blade is mounted for pivotal movement about blade axes B. A blade shaft portion of each blade is at least partly surrounded by a blade housing and by a blade portion of each blade is outside the blade housing, wherein the blade housing is releasable attached to the rotary casing, and each blade being supported in the blade housing by means of bearings for the pivotal movement.

公开(公告)号：US20220017197A1

公开(公告)日：2022-01-20

申请号：US17413047

申请日：2018-12-14

Applicant: ABB Oy

Inventor： Veli-Pekka PELJO ,  Harri LIPPONEN ,  Timo HEINE ,  Kimmo KOKKILA ,  Bin LIU ,  Peter FRANSSON ,  Arne TRANGARD

IPC: B63H1/10 ,  B63H21/17 ,  B60L53/22

Abstract: A drive arrangement for a cycloidal marine propulsion unit including at least two electrical blade motors each associated to a respective blade for pivoting thereof, each blade motor being operationally coupled to a respective blade drive for actuating the corresponding blade motor. The at least two blade drives each include a respective blade drive power converter operationally coupled to a first common intermediate DC-link, wherein the at least two blade drives being configured to feed power from the first common intermediate DC-link to their respective blade motors, and to feed regenerative power from their respective blade motors to the first common intermediate DC-link. The disclosure also concerns a marine propulsion unit having such a drive arrangement, and a method of operating such a drive arrangement.