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公开(公告)号：US12081087B2
公开(公告)日：2024-09-03
申请号：US17881837
申请日：2022-08-05
发明人： Takeshi Kitayama , Hiroyuki Hattori
CPC分类号： H02K21/028 , H02K1/27 , H02K1/2766
摘要： A rotary electric machine includes: a shaft that rotates about an axial direction; a rotor that is disposed around the shaft and that includes a rotor core and a plurality of magnets provided in the rotor core; a stator that is disposed around the rotor and that includes a stator core and a stator coil provided in the stator core; a magnetic flux short circuit plate that is disposed so as to face the rotor core in the axial direction and that moves in the axial direction; a biasing member that biases the magnetic flux short circuit plate to a side away from the rotor core; a holding member that holds the biasing member; and a fixing member that fixes the holding member to the shaft. Further, a strength of a material of the fixing member is higher than a strength of a material of the holding member.
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公开(公告)号：US20240235350A9
公开(公告)日：2024-07-11
申请号：US18207519
申请日：2023-06-08
申请人： LG Electronics Inc.
发明人： Hyeonho HA , Joohang KANG
CPC分类号： H02K21/024 , D06F37/304
摘要： A system for driving a washing machine includes a housing; a plurality of supports extending from the housing in a vertical direction and spaced apart therefrom in a circumferential direction; a supporter supported by the plurality of supports and extending in a circumferential direction; a stator movably coupled to the plurality of supports in a vertical direction; a rotor facing the stator; an output shaft coupled to the rotor and bearing-coupled to the housing; a plurality of cam guides extending radially inward of the stator; and an actuator for adjusting an area where the stator and the rotor face each other by moving the plurality of cam guides in a vertical direction.
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公开(公告)号：US20240162795A1
公开(公告)日：2024-05-16
申请号：US18508432
申请日：2023-11-14
申请人： FCA US LLC
IPC分类号： H02K21/02
CPC分类号： H02K21/028
摘要： A permanent magnet motor includes a rotor configured to rotate about a stator axis and having N pairs of permanent bar magnets each arranged therein and in a V-angle configuration defining a V-angle (θ) therebetween and corresponding to one of N rotor poles, wherein N is greater than one. An adjustment system is configured to adjust the V-angle between each pair of the N pairs of permanent bar magnets between at least a first V-angle (θ1) and a different second V-angle (θ2). A controller is configured to control the permanent magnet motor and the adjustment system to (i) mitigate noise, vibration, and/or harshness (NVH) of the permanent magnet motor and (ii) improve efficiency of the permanent magnet motor at high speed operating regions or improve torque of the permanent magnet motor at low speed operating regions.
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公开(公告)号：US20240088765A1
公开(公告)日：2024-03-14
申请号：US18272661
申请日：2022-01-27
申请人： MAGNAX
发明人： Peter LEIJNEN
IPC分类号： H02K21/02
CPC分类号： H02K21/026
摘要： An axial flux machine includes a rotor having: a first and a second rotor disk; a shifting element; a first and a second pair of mechanical mating elements, enabling an axial displacement of the first respectively second rotor disk relative to the shifting element by rotating the first respectively second rotor disk. An equal rotation of the first and the second rotor disk results in an equally-sized but opposite axial displacement of the first and second rotor disk; a coupling element, mechanically coupling the first and the second rotor disk, thereby blocking a rotation of the first rotor disk relative to the second rotor disk while allowing for an axial displacement.
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公开(公告)号：US11923736B2
公开(公告)日：2024-03-05
申请号：US17416867
申请日：2019-12-19
CPC分类号： H02K21/028 , B64D27/24 , H02K1/17 , H02K1/27 , H02K9/00
摘要： The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.
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公开(公告)号：US20240039446A1
公开(公告)日：2024-02-01
申请号：US18143351
申请日：2023-05-04
申请人： Falcon Power, LLC
IPC分类号： H02P25/18 , B60K6/48 , B63H21/14 , B63H21/20 , B63H23/10 , H02K3/28 , H02K7/18 , H02K16/04 , H02K19/16 , H02K21/02 , H02P31/00 , B60K6/26
CPC分类号： H02P25/188 , B60K6/48 , B63H21/14 , B63H21/20 , B63H23/10 , H02K3/28 , H02K7/183 , H02K16/04 , H02K19/16 , H02K21/024 , H02P31/00 , B60K6/26 , Y10S903/906 , B60K2006/262 , B60K2006/4808 , B63H2021/202 , B63H2021/205 , H02K2213/09 , Y02T70/5236
摘要： A motor/generator/transmission system includes: an axle; a stator ring having a plurality of stator coils disposed around the periphery of the stator ring, wherein each phase of the plurality of stator coils includes a respective set of multiple parallel non-twisted wires separated at the center tap with electronic switches for connecting the parallel non-twisted wires of each phase of the stator coils all in series, all in parallel, or in a combination of series and parallel; a rotor support structure coupled to the axle; a first rotor ring and a second rotor ring each having an axis of rotation coincident with the axis of rotation of the axle, at least one of the first rotor ring or the second rotor ring being slidably coupled to the rotor support structure and configured to translate along the rotor support structure in a first axial direction or in a second axial direction.
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公开(公告)号：US11876415B2
公开(公告)日：2024-01-16
申请号：US17416867
申请日：2019-12-19
CPC分类号： H02K21/028 , B64D27/24 , H02K1/17 , H02K1/27 , H02K9/00
摘要： The present invention relates to an electric machine for an aircraft, comprising a stator and a rotor that is rotationally mobile with respect to the stator, the rotor or the stator comprising a plurality of permanent magnets, the machine comprising a device for demagnetising a permanent magnet, suitable for achieving a temporary increase in the temperature of the permanent magnet, in order to limit, during the temporary increase in temperature, an exciting magnetic flux generated by the permanent magnet. The present invention furthermore relates to an assembly comprising an assembly comprising such an electric machine and a hot-fluid source suitable for delivering hot fluid to the demagnetising device of the electric machine. The hot-fluid source may be a gas stream of a turbine engine.
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公开(公告)号：US11611271B2
公开(公告)日：2023-03-21
申请号：US17030307
申请日：2020-09-23
发明人： Christian Stanek , Dieter Cramer
摘要： An electric machine includes a rotor, a stator, and an air gap formed between a magnetic device of the rotor and the stator. For the selective setting of the air gap, movement devices implemented by piezoelectric stacks are provided on the rotor and/or on the stator. The movement devices may influence radial positions of the respective magnetic device and thus set the radial air gap width. It is thereby possible to exert open-loop and/or closed-loop control over a power or torque of the electric machine without adjusting stator currents. Vibration or unbalance of the rotor may also be counteracted quickly and effectively during operation of the machine.
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公开(公告)号：US20220345016A1
公开(公告)日：2022-10-27
申请号：US17710420
申请日：2022-03-31
申请人： Levitronix GmbH
摘要： An electromagnetic rotary drive includes a rotor including a magnetically effective core surrounded by a stator. The stator has poles arranged around the magnetically effective core and each of the poles is delimited by an end face. The rotor is capable of being magnetically driven without contact in an operating state about an axial direction, and is capable of being magnetically levitated without contact with respect to the stator. The rotor is configured to be magnetically levitated in a radial plane and is passively magnetically stabilized in the axial direction against tilting. The magnetically effective core has a rotor height which is a maximum extension of the magnetically effective core in the axial direction, the rotor height being greater than a stator pole height defined by a maximum extension of the end faces in the axial direction.
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公开(公告)号：US20220286007A1
公开(公告)日：2022-09-08
申请号：US17749897
申请日：2022-05-20
申请人： DENSO CORPORATION
发明人： Yuki TAKAHASHI
摘要： A rotating electric machine includes a field system having a magnet section, and an armature having a multi-phase armature coil. The magnet section has easy axes of magnetization oriented to be nearer perpendicular to a q-axis at locations closer to the q-axis than at locations closer to a d-axis, or to be perpendicular to the q-axis at locations on the q-axis. Each phase of the armature coil has electrical conductor sections formed by winding an electrical conductor wire multiply and arranged at positions facing the magnet section and at a predetermined interval in a circumferential direction. The electrical conductor wire includes a plurality of element wires in a radially laminated state and an insulating coat covering the laminated element wires. Each of the element wires has a flat cross section that is longer in the circumferential direction than in a radial direction.
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