公开(公告)号：US12101007B2

公开(公告)日：2024-09-24

申请号：US18385750

申请日：2023-10-31

Applicant: WattsUp Power A/S

Inventor： John Røn Pedersen ,  Martin Speiermann ,  Jamshid Zamany

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

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

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.