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公开(公告)号：US12081077B2
公开(公告)日：2024-09-03
申请号：US17245847
申请日：2021-04-30
申请人： DENSO CORPORATION
发明人： Yuki Takahashi , Kazuya Iwase , Hidemasa Otsubo
IPC分类号： H02K1/2791 , H02K1/278 , H02K1/28 , H02K3/28
CPC分类号： H02K1/2791 , H02K1/278 , H02K1/28 , H02K3/28 , H02K2213/03
摘要： In a rotating electric machine, a field element includes: a circular annular magnet portion that includes magnetic poles of which polarities alternate in a circumferential direction; and a cylindrical magnet holding portion where the magnet portion is fixed on an inner circumferential surface of the magnet portion. An armature is arranged to oppose the magnet portion on an inner side in a radial direction of the magnet portion. The magnet portion includes circular-arc-shaped magnets arranged in an array in the circumferential direction. In each magnet, both end surfaces in the circumferential direction are along the radial direction and in contact with a magnet adjacent in the circumferential direction. The magnet holding portion is reduced in size such that, in a state where the magnets are arrayed in the circumferential direction, an outer circumference of the magnets is reduced from an outer side toward an inner side in the radial direction.
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公开(公告)号：US20240291370A1
公开(公告)日：2024-08-29
申请号：US18585341
申请日：2024-02-23
申请人： Airbus SAS
发明人： Alexandre COLLE , Reda ABDOUH
摘要： A superconducting motor comprising a rotor with permanent magnets that is rotatable about a longitudinal axis, a stator outside the rotor and comprising a non-magnetic support cylinder and a ferromagnetic magnetic cylinder, wherein the support cylinder is passed through by several orifices, wherein, for each orifice, the magnetic cylinder has a cutout facing the orifice, for each pair of orifices, a coil that is made up of a superconducting material and that is wound by being accommodated in the orifices of the pair, and, for each cutout, a cooling system arranged in the cutout for cooling that portion of the coil which is accommodated in the orifice corresponding to the cutout.
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公开(公告)号：US20240291338A1
公开(公告)日：2024-08-29
申请号：US18439779
申请日：2024-02-13
发明人： Tokio Taira , Shinji Nemoto , Toshitaka Kato
摘要： In a magnetizing device and a magnetizing method, by an auxiliary coil applying an auxiliary magnetic field to a rotor, among a plurality of magnetic bodies, in the case it is assumed that an auxiliary magnetic field is not present therein, a diametrical inwardly directed magnetic flux caused by the auxiliary magnetic field is made to pass with respect to a magnetic body for which there is a possibility of the magnetic body being magnetized in a direction opposite to a direction in which the magnetic body should be magnetized due to the passage of a leakage magnetic flux.
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公开(公告)号：US20240291333A1
公开(公告)日：2024-08-29
申请号：US18589990
申请日：2024-02-28
发明人： You Cheng Jee , Raju Ekambaram
摘要： A rotor for use with an electric submersible pump. The rotor may comprise a yoke having a plurality of steps formed in an outer surface of the yoke. The rotor may comprise a plurality of spacers positioned about the yoke, each spacer of the plurality of spacers positioned at a location of a respective step to prevent relative rotation between the plurality of spacers and the yoke. The rotor may comprise a plurality of permanent magnets positioned about the yoke and separated from each other via a respective spacer of the plurality of spacers, the plurality of permanent magnets prevented from rotating relative to the yoke via the plurality of spacers. The rotor may comprise an enclosure surrounding the plurality of spacers and the plurality of permanent magnets.
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公开(公告)号：US12068637B2
公开(公告)日：2024-08-20
申请号：US17426630
申请日：2020-01-21
摘要： A bandage for a rotor of an electrical machine that may be used in an electrical drive system of an aircraft is provided. The bandage, which serves to fix permanent magnets to the rotor, includes two rings, which are coaxial circular ring-like components, that are connected together by axial webs. The permanent magnets each have axial grooves on a surface of the respective permanent magnet facing the stator. The bandage is arranged on the rotor such that the permanent magnets lie between the rings, and the axial webs are positioned in the axial grooves. Since a thickness of the axial webs corresponds to a depth of the axial grooves, the magnet surfaces and the surface of the bandage are flush with one another, such that the bandage requires no additional space in an air gap.
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公开(公告)号：US12057753B2
公开(公告)日：2024-08-06
申请号：US17361722
申请日：2021-06-29
发明人： Yeong Woo Seo , Jae Min Lee , Jong Bin Park , Jung Kyu Yim
CPC分类号： H02K3/522 , H02K1/148 , H02K1/278 , H02K2203/09
摘要： A busbar unit that is electrically connected a motor, the motor including a coil wound around a stator, the busbar unit including: a terminal disposed at an upper side of the stator and electrically connected to the coil in an outer region of the coil in a radial direction of the stator; and a holder configured to support the terminal.
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公开(公告)号：US12051951B2
公开(公告)日：2024-07-30
申请号：US17735708
申请日：2022-05-03
摘要： There is provided a winding system for use in an electrical, electronic or electromagnetic device or component including: one or more set of windings, each set of windings including an electrically-conductive element arranged in a winding pattern with multiple turns, at least one pair of adjacent turns of the multiple turns being spaced apart to provide at least one channel therebetween for coolant fluid to flow therethrough; and a housing for housing the set of windings, the housing including a fluid inlet and a fluid outlet each in fluid communication with the at least one channel, the housing facilitating coolant fluid to flow from the fluid inlet to the fluid outlet, via the at least one channel in direct contact with exposed surfaces of the set of windings, the exposed surfaces at least partially defining the at least one channel.
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公开(公告)号：US12051949B2
公开(公告)日：2024-07-30
申请号：US17151823
申请日：2021-01-19
发明人： Brett Bowman , Brent Haseley
CPC分类号： H02K16/02 , H02K1/02 , H02K1/278 , H02K2201/06
摘要： Asymmetric skewed rotors and an electric motor that incorporates said rotors. The rotor being are configured to rotate within a stator positioned to surround a portion of the rotors. The stator and rotors are aligned along a centerline (x). Each rotor includes an asymmetric feature, such that during operation dynamic balance results when the asymmetric feature on each rotor are aligned opposite one another perpendicular to the centerline (x) and static balance results when the asymmetric feature on each rotor are aligned opposite one another parallel to the centerline (x).
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公开(公告)号：US12046953B2
公开(公告)日：2024-07-23
申请号：US16967685
申请日：2019-01-30
申请人： LG Electronics Inc.
发明人： Dongseok Ryu , Kiman Kim , Sangjoon Eum
IPC分类号： H02K16/02 , F25B1/02 , H02K1/278 , H02K1/2791 , H02K29/03
CPC分类号： H02K1/278 , F25B1/02 , H02K1/2791 , H02K16/02 , H02K29/03 , H02K2201/03
摘要： A dual rotor-type motor includes a stator having a coil wound therearound, an outer rotor, and an inner rotor. The stator includes inner teeth facing the inner rotor, and outer teeth facing the outer rotor, and the inner teeth are misaligned in a rotating direction by as much as an angle with respect to the outer teeth, which may enable the reduction of a torque ripple to a satisfying level, even without having to change the design of the stator structure into a complicated form.
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公开(公告)号：US12011583B2
公开(公告)日：2024-06-18
申请号：US18131430
申请日：2023-04-06
申请人： ABIOMED, Inc.
发明人： Jimpo Wang
IPC分类号： H02K1/27 , A61M60/17 , A61M60/237 , A61M60/416 , A61M60/419 , A61M60/508 , H02K1/278 , H02K3/28 , H02K15/03
CPC分类号： A61M60/419 , A61M60/17 , A61M60/237 , A61M60/416 , A61M60/508 , H02K1/278 , H02K3/28 , A61M2205/3334 , H02K15/03
摘要： There is provided an intravascular blood pump for insertion into a patient's heart. The blood pump comprises a slotless permanent magnet motor contained within a housing, the motor having p magnet pole pairs and n phases, where p is an integer greater than zero, and n is an integer ≥3. The motor comprises a stator extending along a longitudinal axis of the housing and having 2np coils wound to form two coils per phase per magnet pole pair. The stator comprises inner and outer windings each comprising np coils electrically connected such that the current flowing through the coils is in the same direction, the coils of the outer winding arranged on an outer surface of the coils of the inner winding.
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