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公开(公告)号：US11799364B2
公开(公告)日：2023-10-24
申请号：US17243225
申请日：2021-04-28
发明人： Waleed Said , Michael Andres , Adam White
摘要： Electric propulsion systems, and methods of operating and implementing same, are disclosed herein. In one example embodiment, an electric propulsion system includes an electric motor, a motor drive coupled to the electric motor, and a thermal management subsystem. The electric motor is a permanent magnet synchronous motor, and the motor drive includes each of an inverter including a plurality of wide bandgap semiconductor field effect transistors (FETs), and a controller coupled at least indirectly to the FETs and configured to control the FETs by way of pulse width modulation (PWM) control. Additionally, at least a first portion of the electric motor and at least a second portion of the motor drive are cooled by the thermal management subsystem.
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公开(公告)号：US11530019B1
公开(公告)日：2022-12-20
申请号：US16974044
申请日：2020-09-12
发明人： Eric Seeley , Logan Harris
摘要： A field configurable autonomous vehicle includes modular elements and attachable components. The vehicle can be assembled from these modular elements and components to meet desired mission and performance characteristics without the need to purchase specially designed vehicles for each mission. The vehicle can include a modular propulsion system with magnetic drive.
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公开(公告)号：US10804779B2
公开(公告)日：2020-10-13
申请号：US15737315
申请日：2015-06-24
发明人： Kenny Chen , Huiming Zhang
摘要： The present invention provides a multi-rotor permanent magnet synchronous motor, wherein the motor (100) includes a motor shaft (3) and the main mechanism (1) and the auxiliary mechanism (4) sleeved on the motor shaft (3) in turn which work in parallel; the auxiliary mechanism (4) includes a one-way bearing body (41) sleeved on the motor shaft (3) and auxiliary rotor components (40) sleeved on the one-way bearing body (41). The multi-rotor permanent magnet synchronous motor in the present invention does not need a gear box to drive, and the energy consumption is low. Besides, through the coordinative work of the main structure and the auxiliary mechanism, different torques can be output, so as to output different speeds.
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公开(公告)号：US10788074B2
公开(公告)日：2020-09-29
申请号：US16136579
申请日：2018-09-20
申请人： JTEKT CORPORATION
摘要： A rolling bearing device includes a bearing portion and a power generation portion. The power generation portion has a plurality of projecting portions provided on an outer ring spacer, a pair of core members provided on an inner ring spacer, a magnet, and a coil. The power generation portion generates an induced current in the coil as the projecting portions pass in the vicinity of first side end portions of the core members during rotation. There are two different loop paths along which magnetism generated by the magnet flows: a first loop path formed when the projecting portions are close to the first side end portions of the core members; and a second loop path formed when the projecting portions and the first side end portions of the core members are away from each other.
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公开(公告)号：US10461592B2
公开(公告)日：2019-10-29
申请号：US15487411
申请日：2017-04-13
IPC分类号： H02K1/20 , H02K16/04 , H02K5/16 , H02K1/27 , H02K1/14 , H02K1/02 , H02K1/06 , H02K21/24 , H02K7/08 , H02K1/08 , H02K1/24 , H02K41/03 , B25J9/12 , H02K3/04 , H02K5/04 , H02K9/00 , H02K15/04 , H02K9/02 , H02K1/16 , H02K3/12 , B25J15/08 , B25J17/00 , H02K21/00 , B25J9/00 , B25J15/00 , B25J15/02 , B25J19/00 , H02K21/14 , H02K21/22 , H02K1/32 , H02K3/24 , H02K3/26 , H02K5/18 , H02K9/19 , H02K19/10 , H02K7/14
摘要： An electric motor has a first carrier having an array of electromagnetic elements and a second carrier having electromagnetic elements defining magnetic poles. The first and second carriers each define an axis. An airgap is formed between the first and second carriers when in an operational position. An inner thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. An outer thrust bearing connects the first and second carriers and is arranged to allow relative rotary motion of the carriers. The electromagnetic elements of each of the first and second carriers are arranged radially inward of the outer thrust bearing and radially outward of the inner thrust bearing. The inner thrust bearing and the outer thrust bearing are arranged to maintain the airgap against a magnetic attraction of the electromagnetic elements of the first and second carriers.
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公开(公告)号：US10432073B2
公开(公告)日：2019-10-01
申请号：US15422739
申请日：2017-02-02
发明人： Yue Li , Chui You Zhou , Yan Ling Liu , Gui Hua Li , Xiao Ning Zhu , Yong Wang
摘要： A medical pump includes a single phase synchronous motor, a rod piston, a cylinder for receiving the rod piston for reciprocating motion therein. The single phase synchronous motor includes a stator and a rotor rotatable relative to the stator. The rotor includes a plurality of permanent magnets. The stator comprises a stator core and a winding wound around the stator core. The stator core comprises two opposed pole portions that define there between a rotor receiving space for receiving the permanent magnets. The medical pump has a compact structure. In addition, the motor of the medical pump has a constant rotation speed and has a smaller size and less weight under the same output power conditions as traditional motors used in medical pumps. The medical pump is particularly suitable for use in atomizers.
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公开(公告)号：US10336430B2
公开(公告)日：2019-07-02
申请号：US15363973
申请日：2016-11-29
申请人： ABB Schweiz AG
发明人： Antto Kosso , Lasse Lahtinen , Petri Säkkinen
摘要： The invention relates to a pod propulsion unit of a ship. The pod propulsion unit comprises a pod housing arranged at least partly below a hull of the ship, an electric propeller motor within a motor gondola of the pod housing, an annular gap between a rotor and a stator of the electric propeller motor, and gas channels extending through the rotor, a closed cooling gas circuit, and a fan for circulating gas in the closed cooling gas circuit. The closed cooling gas circuit comprising a feeding duct extending between the return duct and the first motor end face of the electrical propeller motor, and a return duct extending between the feeding duct and the opposite second motor end face of the electrical propeller motor.
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公开(公告)号：US10298104B2
公开(公告)日：2019-05-21
申请号：US14448445
申请日：2014-07-31
发明人： Larry James Blevins
摘要： The present invention provides methods and systems for an electrical motor or power generator device that includes a housing having a front end cap and a rear end cap, and a shaft rotationally engaged to the front end cap and rear end cap. The device includes at least one in-line stator including an external ring disposed around a centrally located bore for receiving the shaft, and at least one opening within the external ring for receiving a coil assembly. The device further includes at least one in-line rotor that includes a plate with a centrally located bore for receiving the shaft, and at least one opening within the plate for receiving a magnet assembly.
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公开(公告)号：US10298076B2
公开(公告)日：2019-05-21
申请号：US14378822
申请日：2012-07-30
申请人： Kenji Endo
发明人： Kenji Endo
摘要： A three-phase permanent magnet-type synchronous motor configured to significantly reduce cogging torque. The motor includes a rotator and stator each having either permanents magnets or teeth. The number of magnetic poles of the rotator or stator is P and a number of slots of the stator or rotator is N, and a fraction of 2N/3P has a value greater than zero and less than one. The tooth width of the teeth of the stator or rotator in a circumferential direction is ½ of the slot pitch of the stator or rotator.
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公开(公告)号：US10047754B2
公开(公告)日：2018-08-14
申请号：US14491202
申请日：2014-09-19
申请人： MINEBEA MITSUMI INC.
发明人： Akiharu Hiromoto
摘要： A brushless motor 5 of the present invention comprises: a rotor magnet 13 having a magnetized circumferential surface 13a comprising an upper circumferential surface 13a1 magnetized with a plurality of magnetic poles and a lower circumferential surface 13a2 magnetized with a plurality of magnetic poles; and a stator 30 having a stator stack 31 at least partially facing the lower circumferential surface 13a2, wherein the upper circumferential surface 13a1 of the rotor magnet 13 has a surface magnetic flux density of substantially the same level from a center of a magnetic pole until a vicinity of an adjacent magnetic pole, and the lower circumferential surface 13a2 of the rotor magnet 13 has a surface magnetic flux density decreasing from a center of a magnetic pole toward an adjacent magnetic pole.
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