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：US20240250593A1

公开(公告)日：2024-07-25

申请号：US18594324

申请日：2024-03-04

Applicant: MAERSK DRILLING A/S

Inventor： John Røn PEDERSEN ,  Martin SPEIERMANN ,  Jacopo GRANATA ,  Valère COMBESCOT ,  Mikael ERONEN

IPC: H02K21/22 ,  F16C32/04 ,  F16F15/30 ,  H02K7/02

CPC classification number: H02K21/222 ,  H02K7/025 ,  F16C32/0427 ,  F16C32/0474 ,  F16F15/30

Abstract: A flywheel system including a rotor forming an aperture extending through a rotation axis of the rotor and a fixture including a shaft assembly for passing through the aperture of the rotor, wherein the rotor rotates about the shaft assembly. The shaft assembly includes a bottom support, a top support, a central rod connecting the bottom support to the top support, a plurality of stacked modules, each module forming an aperture for receiving the central rod, a top pre-tensioning nut affixed to a top end of the central rod, and a bottom pretensioning nut affixed to a bottom end of the central rod. The top pre-tensioning nut and the bottom pre-tensioning nut clamp the plurality of stacked modules between the bottom support and the top support.

公开(公告)号：US20210391778A1

公开(公告)日：2021-12-16

申请号：US17287483

申请日：2019-10-22

Applicant: MAERSK DRILLING A/S

Inventor： John Røn PEDERSON ,  Martin SPEIERMANN ,  Jacopo GRANATA ,  Valère COMBESCOT ,  Mikael ERONEN

IPC: H02K21/22 ,  H02K7/02

Abstract: A flywheel system includes a rotor and a fixture. The rotor forms an aperture. The fixture includes a bottom support, a top support, and a shaft connecting the bottom support to the top support. The shaft passes through the aperture. The bottom support and the top support are outside opposite ends of the aperture. The rotor is configured to rotate about the shaft. A method for operating a flywheel system includes converting between rotational energy of a rotor and electrical energy in windings of a generator stator that is implemented in a stationary shaft passing through an aperture of the rotor, while the rotor is rotating about the shaft.

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：US20210359520A1

公开(公告)日：2021-11-18

申请号：US17385623

申请日：2021-07-26

Applicant: MAERSK DRILLING A/S

Inventor： John Røn PEDERSEN ,  Martin SPEIERMANN

IPC: H02J3/30 ,  H02J3/38 ,  H02J3/46 ,  F02D19/06

Abstract: A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.

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：US20200176987A1

公开(公告)日：2020-06-04

申请号：US16782032

申请日：2020-02-04

Applicant: MAERSK DRILLING A/S

Inventor： John Røn PEDERSEN ,  Martin SPEIERMANN

IPC: H02J3/30 ,  F02D19/06 ,  H02J3/46 ,  H02J3/38

Abstract: A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.

公开(公告)号：US20180366950A1

公开(公告)日：2018-12-20

申请号：US16060144

申请日：2016-12-07

Applicant: MAERSK DRILLING A/S

Inventor： John Røn PEDERSEN ,  Martin SPEIERMANN

IPC: H02J3/30 ,  H02J3/38 ,  H02J3/46 ,  F02D19/06

Abstract: A method for operating a microgrid electric power generation system includes delivering energy to an electric power bus at least partially from one or more kinetic generators electrically coupled to the electric power bus, controlling the one or more kinetic generators in response to a change in a load such that a magnitude of a voltage on the electric power bus remains within a predetermined voltage range, and controlling one or more combustion generators electrically coupled to the electric power bus based at least in part on an operating state of the one or more kinetic generators. The one or more kinetic generators are capable of (a) delivering energy stored therein to the electric power bus, and (b) storing energy in kinetic form.