公开(公告)号：US20230163673A1

公开(公告)日：2023-05-25

申请号：US18100970

申请日：2023-01-24

Applicant: MAERSK DRILLING A/S

Inventor： John RØN PEDERSEN ,  Martin SPEIERMANN ,  Jamshid ZAMANY

IPC: H02K21/22 ,  H02K11/21 ,  H02K7/09

CPC classification number: H02K21/222 ,  H02K11/21 ,  H02K7/09

Abstract: A flywheel system includes a fixture providing a base and a stator, rotor having a cavity to receive the stator, a generator/motor module having a plurality of permanent magnets mechanically coupled to the rotor and an active magnetic bearing module. The active magnetic bearing module includes a plurality of magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to a shaft and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. The windings of the generator/motor module are arranged around the rotation axis of the rotor at a first distance from the rotation axis of the rotor, the electromagnets of the active magnetic bearing module are arranged around the rotation axis of the rotor at a second distance, and the first distance is greater than or equal to the second distance.

公开(公告)号：US20220340248A1

公开(公告)日：2022-10-27

申请号：US17859803

申请日：2022-07-07

Applicant: MAERSK DRILLING A/S

Inventor： John RØN PEDERSEN

IPC: B63H21/17 ,  B63J3/04 ,  H02J3/38 ,  E21B41/00

Abstract: A mobile offshore drilling unit includes a plurality of electric thrusters to dynamically position the drilling unit, and a microgrid electric power generation system for providing power to the plurality of electric thrusters, the microgrid electric power generation system including at least one combustion generator electrically coupled to a main electric power bus and at least one thruster electric power system, the thruster electric power system including a thruster electric power bus, an additional electric power bus connected to the thruster electric power bus via an interface device, and a circuit breaker electrically coupling the additional electric power bus to a main electric power bus for isolating the thruster electric power bus from the main electric power bus in case of loss of power on the main electric power bus.

公开(公告)号：US20220181958A1

公开(公告)日：2022-06-09

申请号：US17682331

申请日：2022-02-28

Applicant: MAERSK DRILLING A/S

Inventor： John RØN PEDERSEN ,  Martin SPEIERMANN ,  Jamshid ZAMANY

IPC: H02K21/22 ,  H02K11/21 ,  H02K7/09

Abstract: A flywheel system includes a rotor configured to rotate about a rotation axis. The flywheel system further includes a fixture and an active magnetic bearing module for actively stabilizing the rotor relative to the fixture. The active magnetic bearing module includes a plurality of first magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to the fixture and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. Each of the first magnetizable elements is farther than each of the electromagnets from the rotation axis.

公开(公告)号：US20200321843A1

公开(公告)日：2020-10-08

申请号：US16758298

申请日：2018-10-22

Applicant: MAERSK DRILLING A/S

Inventor： John RØN PEDERSEN ,  Martin SPEIERMANN ,  Jamshid ZAMANY

IPC: H02K21/22 ,  H02K7/09 ,  H02K11/21

Abstract: A flywheel system includes a rotor configured to rotate about a rotation axis. The flywheel system further includes a fixture and an active magnetic bearing module for actively stabilizing the rotor relative to the fixture. The active magnetic bearing module includes a plurality of first magnetizable elements mechanically coupled to or integrated in the rotor, and a plurality of electromagnets mechanically coupled to the fixture and configured to magnetically couple with the plurality of first magnetizable elements to actively stabilize the rotor relative to the fixture. Each of the first magnetizable elements is farther than each of the electromagnets from the rotation axis.

公开(公告)号：US20210107616A1

公开(公告)日：2021-04-15

申请号：US16606693

申请日：2018-04-18

Applicant: MAERSK DRILLING A/S

Inventor： John RØN PEDERSEN

IPC: B63H21/17 ,  H02J3/38 ,  B63J3/04 ,  E21B41/00

Abstract: A thruster electric power system includes one or more energy storage units configured to power an electric thruster of a mobile offshore drilling unit in response to one or more combustion generators of the mobile offshore drilling unit being unavailable to provide electric power to the electric thruster. A mobile offshore drilling unit capable of dynamic positioning includes one or more thruster enclosures, each thruster enclosure including: (a) one or more thruster converters configured to power respective electric thrusters, and (b) one or more energy storage units configured to power the respective electric thrusters of the one or more thruster converters in response to one or more combustion generators of the mobile offshore drilling unit being unavailable to provide electric power to the electric thrusters.