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公开(公告)号：US20240128847A1
公开(公告)日：2024-04-18
申请号：US18349135
申请日：2023-07-08
发明人： Glenn Auld KNIERIM
CPC分类号： H02K55/04 , H02K11/012
摘要： An improved system for handling delicate linear media and in particular to a method and apparatus for winding delicate linear media such as superconducting wire or tape or optical fibers onto a spool or former, and electric machines produced thereby. A combination of direct closed loop control and media routing design facilitates the handling of the delicate media without causing damage. The axial tension in the linear media may be closely controlled during winding by means of feedback control loop using tension measurements to control the rotation speeds of the wind-from and wind-to spools. Further, during winding, the delicate linear media is only exposed to large radius bends with no reverse bending. Finally, output devices and features, commercial or otherwise, made possible by delicate linear media handling are revealed. This includes advanced SC devices and features.
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公开(公告)号：US20240106314A1
公开(公告)日：2024-03-28
申请号：US18527791
申请日：2023-12-04
申请人： MAGNOMATICS LIMITED
CPC分类号： H02K49/102 , H02K11/012
摘要： The present disclosure relates to a magnetically geared apparatus. In an example the magnetically geared comprises: a first mover comprising a plurality of first permanent magnets; a stator; a second mover; and a flux shield aligned with the first plurality of permanent magnets for attenuating magnetic flux. One of the stator and the second mover comprises a plurality of pole pieces and is positioned between the first mover and the other of the stator and the second mover. The first mover, the stator and the second mover are aligned in a first direction, and wherein the flux shield is spaced from the plurality of first permanent magnets in a second direction perpendicular to the first direction by a nonmagnetic region, thereby attenuating magnetic flux in the second direction.
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公开(公告)号：US11722025B2
公开(公告)日：2023-08-08
申请号：US17139253
申请日：2020-12-31
发明人： Fredrik Boxberg , Charles J. Peterson , Yubo Nian , Petri J. Mäki-Ontto , Lauri Juhani Salmia , Russell T. Abbott , Tomas Fajt , Seth M. McGill
CPC分类号： H02K1/278 , H02K11/012 , H02K15/03
摘要： Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.
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公开(公告)号：US20240339897A1
公开(公告)日：2024-10-10
申请号：US18602254
申请日：2024-03-12
申请人： ROLLS-ROYCE plc
IPC分类号： H02K15/00 , H01F13/00 , H02K11/01 , H02K1/2783
CPC分类号： H02K15/0006 , H01F13/003 , H02K11/012 , H02K1/2783
摘要： A method of magnetising or demagnetising an annular component for a rotary machine, a flux arrangement for performing a magnetising or demagnetising method, and a flux assembly for such a flux arrangement; wherein, the annular component includes an alternating arrangement of radial elements and angular elements for forming a Halbach array. A magnetizer is caused to induce magnetic flux in a primary set of elements of the annular component including a primary radial element and an adjacent primary angular element. A shield element shields a secondary angular element of the annular component from magnetic flux from the magnetizer.
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公开(公告)号：US20240283310A1
公开(公告)日：2024-08-22
申请号：US18571260
申请日：2021-08-23
发明人： Yu HIRAI , Junji KITAO , Tatsuo NISHIMURA
CPC分类号： H02K1/2766 , H02K11/012
摘要： Provided is a rotor that enables reduction in iron loss due to harmonics. One magnetic pole is formed by arranging three or more magnetic-pole layers each having a pair of V-shaped magnet slots and permanent magnets. An angle between a q axis and a line parallel to a magnetic-flux output surface of the permanent magnet is defined as a magnetic-pole-layer angle. The magnetic-pole-layer angles in one magnetic pole become smaller as the magnetic-pole layers become closer to a rotary shaft. A shortest distance from the magnet slot to the outer circumferential surface of a rotor core is defined as a bridge width and a shortest distance between the adjacent magnetic-pole layers is defined as a magnetic-pole-layer interval. The magnetic-pole-layer interval is set to be smaller than a sum of the bridge widths of the adjacent magnetic-pole layers.
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公开(公告)号：US20240030763A1
公开(公告)日：2024-01-25
申请号：US18366344
申请日：2023-08-07
发明人： Fredrik Boxberg , Charles J. Peterson , Yubo Nian , Petri J. Mäki-Ontto , Lauri Juhani Salmia , Russell T. Abbott , Tomas Fajt , Seth M. McGill
CPC分类号： H02K1/278 , H02K11/012 , H02K15/03
摘要： Permanent magnet rotors for electric motors, particularly electric motors for use in compressors, improve the electromagnetic efficiency of the motor. The rotors can include retention of surface permanent magnets using one or more of retaining features on the motor and/or pole spacers interfacing with corresponding features on a rotor core, the use of a monolithic magnet in the rotor, and/or use of a carbon fiber sleeve. The rotor can include an eddy current shield, disposed on the rotor core, on a surface of the rotor, or located within a sleeve surrounding the rotor. The rotor can be sized such that an air-gap between the rotor and a stator of a motor using the rotor is a predetermined amount that reduces electromagnetic losses such as eddy current losses.
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公开(公告)号：US20240178730A1
公开(公告)日：2024-05-30
申请号：US18468246
申请日：2023-09-15
发明人： Hiroshi KIKUCHI , Eiji SHIMIZU , Kenta CHIMATA
CPC分类号： H02K15/12 , H02K1/28 , H02K11/012
摘要： A heating device for induction-heating a rotor core of an electric motor includes an induction heating coil disposed in a central hole of the rotor core, an alternating current power supply for supplying an alternating current to the induction heating coil, and a first magnetic flux shielding plate disposed on a first end face of the rotor core and having a first opposing surface opposed to the first end face of the rotor core. The first opposing surface of the first magnetic flux shielding plate has a first inner region and a first outer region located radially outward of the first inner region. The first inner region protrudes more toward the first end face than the first outer region. Clearance is formed between the first outer region and the first end face of the rotor core when the first inner region abuts the first end face of the rotor core.
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8.发明公开公开(公告)号：US20240006970A1
公开(公告)日：2024-01-04
申请号：US18039250
申请日：2021-01-20
发明人： Jin-woo AHN , Kwang-il JEONG , Do-hyun KANG
CPC分类号： H02K16/00 , H02K11/30 , H02K1/278 , H02K21/12 , H02K11/012
摘要： The present disclosure relates to a double air gap surface permanent magnet synchronous motor with two controllers, and particularly, to a double air gap surface permanent magnet synchronous motor with two controllers, which doubles structures of a rotor and a stator to improve torque performance and has high efficiency and a high power density that satisfy an international efficiency class IE5 of International Electro-technical Commission (IEC) and solves failures by including individual controllers. According to an embodiment the present disclosure, a double air gap surface permanent magnet synchronous motor with two controllers, includes a first stator including first protrusions formed on a first inner circumferential surface, a first rotor including a first outer circumferential surface facing the first inner circumferential surface, first permanent magnets arranged on the first outer circumferential surface, a second rotor integrally connected to the first rotor to correspond to an inside of the first rotor and including a second inner circumferential surface, second permanent magnets arranged on the second inner circumferential surface, a second stator including second protrusions formed on a second outer circumferential surface formed to face the second inner circumferential surface, a partition wall portion formed at a boundary between the first rotor and the second rotor, a first controller for controlling a first winding wire wound around the first protrusions, and a second controller for controlling a second winding wire wound around the second protrusions.
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公开(公告)号：US20230344316A1
公开(公告)日：2023-10-26
申请号：US18159404
申请日：2023-01-25
发明人： Yoshihiro MIYAMA , Shinsuke KAYANO , Kengo Kumagai
CPC分类号： H02K11/012 , H02K1/27 , H02K7/00
摘要： An object of the present disclosure is to provide a rotating electric machine in which a centrifugal force can be relaxed and reluctance torque can be improved. A pair of magnet slots are provided so as to be opposed to each other such that the distance therebetween is narrowed toward the radially inner side while being centered on a d axis of a rotor core, a pair of magnets are inserted in the pair of magnet slots, and center flux barriers are provided on the d axis between the pair of magnet slots. The distance in the radial direction between the first-layer center flux barrier and the second-layer center flux barrier is the smallest among distances between a flux barrier layer for first layer and a flux barrier layer for second layer.
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