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公开(公告)号：US20230083131A1
公开(公告)日：2023-03-16
申请号：US17850222
申请日：2022-06-27
申请人： HYUNDAI MOTOR COMPANY , KIA CORPORATION , IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)
发明人： Jin Ho Choi , Jong Seok Lee , Jin Cheol Park , Sung Woo Hwang , Myung Seop Lim , Jae Hyun Kim
IPC分类号： H02K21/46
摘要： A hybrid motor includes an induction motor and a synchronous motor combined. The hybrid motor includes a hollow rotor that includes conductor bars configured to form an annular shape at a position spaced apart from a rotation axis by a predetermined first distance and a synchronous motor equivalent that is disposed in an annular shape at a position spaced apart from the rotation axis by a predetermined second distance, an induction stator that includes induction stator windings positioned on a first radial side of the hollow rotor, and a synchronous stator that includes synchronous stator windings positioned on a second radial side of the hollow rotor.
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公开(公告)号：US11362574B2
公开(公告)日：2022-06-14
申请号：US16471948
申请日：2016-12-21
申请人： ABB Schweiz AG
发明人： Pietro Savio Termini , Alessandro Castagnini , Giovanni Tartaglino , Michele Maggi , Jere Kolehmainen , Tero Kansakangas
摘要： A rotor for a synchronous reluctance machine includes a rotor core having a plurality of magnetically conductive laminations stacked in a rotor axial direction. The magnetically conductive laminations include cut-out portions forming a plurality of flux barriers radially alternated by flux paths portions, where at least one of the flux barriers includes a ridge connecting two flux paths portions adjacent to the at least one flux barrier. The at least one flux barrier has a first barrier mid-line, which is a line that is equidistant from both sides of the at least one flux barrier. The bridge has a second bridge mid-line, which is the line that is equidistant from both sides of the bridge. The first and second mid-lines intersect. The bridge has a first and second symmetry axis and is non-symmetrical with respect to at least one of the first and second symmetry axis.
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公开(公告)号：US11289970B2
公开(公告)日：2022-03-29
申请号：US16496489
申请日：2018-03-13
摘要： An electric drive comprises a bearingless electric machine, a converter, and a control device. The stator of the electric machine has a cage winding including bars connected to a conductor ring. The control device controls the converter to supply torque generating current components to the bars so that torque is generated in accordance with electric machine control and to supply levitation current components to the bars so that the rotor of the bearingless electric machine is levitated in accordance with levitation control. The cage winding allows the currents of the bars to be controlled so that different current sheet distributions can be generated so as to generate desired torque and magnetic force.
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公开(公告)号：US11012017B2
公开(公告)日：2021-05-18
申请号：US16574142
申请日：2019-09-18
发明人： Hauke Nannen , Heiko Zatocil
摘要： An embodiment relates to a method for operating a three-phase machine including a rotor and a stator connected to a three-phase network. The stator is connected to the three-phase network via a first semiconductor circuit arrangement for forming a first rotational field rotating in a first direction of rotation in the stator and via a second semiconductor circuit arrangement for forming a second rotational field rotating in a direction of rotation opposite to the first direction of rotation in the stator. The three-phase machine further includes a controller. The method includes controlling, via the controller, semiconductors of the first and second semiconductor circuit arrangement to accelerate the rotor by current pulses of both the first rotational field and second rotational field in the first direction of rotation.
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公开(公告)号：US10651764B2
公开(公告)日：2020-05-12
申请号：US16106728
申请日：2018-08-21
摘要： A rotor for an LSIPM comprises a plurality of permanent magnets defining a number of poles (“P”) of the LSIPM, and a plurality of rotor bars spaced about the rotor defining a rotor bar area (“BA”). The rotor bars are formed of a conductive material having an associated conductivity (“σRB”). End members are disposed on axial opposite ends of the rotor core. The end members are in electrical contact with the rotor bars. The end members are formed from a material having an associated conductivity (“σEM”). Each end ring member has a minimum geometric cross sectional area (“ERA”) and outer diameter that generally corresponds to the rotor core outer diameter. The ERA is greater than 0.5 times the rotor bar area per the number of poles (BA/P) times a ratio of the rotor bar material conductivity to the end member material conductivity (σRB/σEM).
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公开(公告)号：US10461594B2
公开(公告)日：2019-10-29
申请号：US15386094
申请日：2016-12-21
发明人： Jacek F. Gieras , Gregory I. Rozman
摘要： A rotor of line start permanent magnet synchronous motor is provided. The rotor includes bars of cage windings. The rotor includes an additional inductance coupled to the cage windings and located on a first end of the bars. The rotor includes an end ring located on a second end of the bars. The additional inductance provides a reactance to reduce a starting current during an asynchronous starting of the line start permanent magnet synchronous motor.
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公开(公告)号：US10277101B2
公开(公告)日：2019-04-30
申请号：US15098481
申请日：2016-04-14
申请人： DENSO CORPORATION
发明人： Yuki Takahashi
摘要： A rotor includes a rotor core formed by laminating steel sheets, first and second plate members respectively arranged on first and second axial sides of the rotor core, first short-circuiting pins held by the first plate member and having been inserted in respective pin-receiving holes of the rotor core from the first axial side, and second short-circuiting pins held by the second plate member and having been inserted in respective pin-receiving holes of the rotor core from the second axial side. One of the first short-circuiting pins and one of the second short-circuiting pins respectively function as first and second positioning pins. For at least one of first and second positioning pin-receiving holes in which the first and second positioning pins are respectively received, each of the steel sheets forming the rotor core has a chamfered or curved corner around the positioning pin-receiving hole on a positioning pin insertion side.
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公开(公告)号：US09906108B2
公开(公告)日：2018-02-27
申请号：US14559037
申请日：2014-12-03
发明人： Kum Kang Huh , Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
摘要： An electric machine that includes a rotor core made of magnetic steel; a stator configured with stationary windings therein; openings disposed within or on the rotor core; and a rotor circuit that is configured to introduce saliency based on an orientation of part of the rotor circuit in relationship to a pole location of the electric machine, where the rotor circuit is made of a conductive, non-magnetic material. A rotor component and various embodiments of electric machines are also disclosed. The present invention has been described in terms of specific embodiment(s), and it is recognized that equivalents, alternatives, and modifications, aside from those expressly stated, are possible and within the scope of the appending claims.
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公开(公告)号：US09871418B2
公开(公告)日：2018-01-16
申请号：US14974848
申请日：2015-12-18
发明人： Kum Kang Huh , Patel Bhageerath Reddy , Ayman Mohamed Fawzi El-Refaie , Patrick Lee Jansen , Roy David Schultz , Lembit Salasoo
摘要： A rotor component that comprises a rotor circuit configured for use with either an interior permanent magnet (IPM) machine or a synchronous reluctance machine (SRM) that includes a pole circuit made of a conductive, non-magnetic material and has a midpoint that substantially aligns with a d-axis of the IPM or SRM. An electric machine with a similar rotor component therein or having a loop or ring of a conductive, non-magnetic material that is substantially concentric about a d-axis of the electric machine.
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公开(公告)号：US20170098987A1
公开(公告)日：2017-04-06
申请号：US14875942
申请日：2015-10-06
发明人： Jacek F. Gieras
CPC分类号： H02K21/46 , H02K1/223 , H02K1/26 , H02K1/2753 , H02K21/14
摘要： A line start permanent magnet (LSPM) brushless motor includes a stator, a rotor assembly disposed in the central opening defined by the stator. The rotor assembly includes a magnet unit and a rotor. The magnet unit is arranged along an inner circumferential surface of the stator so as to define an air gap between the stator. The rotor rotatably is coupled to a shaft such that the rotor is configured to rotate adjacent the magnet unit. The rotor includes a plurality of rotor slots, each rotor slot defining a double-cage winding that includes an upper cage and a lower cage. The double-cage winding can serve as a damper, which reduces the starting current upon rotational startup of the rotor.
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