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公开(公告)号：US10608487B2
公开(公告)日：2020-03-31
申请号：US15451550
申请日：2017-03-07
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , Leyi Zhu , Lusu Guo , Michael W. Degner
Abstract: An electric machine includes a unitary, single material substrate defining a rotor lamination including a first region having a predefined magnetic permeability. The rotor lamination includes an arc-shaped second region having a magnetic permeability less than the first region. The second region is oriented such that it impedes flux associated with magnets contained by the first region and perpendicular to quadrature flux field lines associated with the magnets.
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公开(公告)号：US20160365762A1
公开(公告)日：2016-12-15
申请号：US14734580
申请日：2015-06-09
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , Lusu Guo , Michael W. Degner
IPC: H02K1/27
CPC classification number: H02K1/2706 , H02K1/2766 , H02K29/03 , H02K2201/06
Abstract: A permanent magnet electric machine includes a rotor configured to rotate about an axis. The rotor is comprised of axially stacked sections. Each section is comprised of axially stacked laminations that define a pattern of axial grooves on an outer surface of the rotor to reduce torque ripple. The pattern is different for at least two of the sections. The pattern for each section may alternate with respect to poles of the rotor.
Abstract translation: 永磁电机包括被配置为围绕轴线旋转的转子。 转子由轴向堆叠的部分组成。 每个部分包括轴向层叠的叠片，其在转子的外表面上限定轴向凹槽的图案，以减小扭矩波动。 至少两个部分的图案是不同的。 每个部分的图案可以相对于转子的极点交替。
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公开(公告)号：US10518624B2
公开(公告)日：2019-12-31
申请号：US15623700
申请日：2017-06-15
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , C Bing Rong , Michael W. Degner , Lusu Guo
Abstract: A hybrid powertrain utilizes a motor with a permanent magnet rotor. The rotor is formed by inserting parallelepiped magnets into slots. To reduce the likelihood of demagnetization, the net magnetization of each magnet is oriented parallel to a sidewards surface of the magnet and not perpendicular to an outwards surface of the magnet. The magnets may be arranged in multiple rows. The magnets in each row may be perpendicular to a rotor radial or diagonal to a rotor diagonal.
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公开(公告)号：US09985484B2
公开(公告)日：2018-05-29
申请号：US14734580
申请日：2015-06-09
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , Lusu Guo , Michael W. Degner
CPC classification number: H02K1/2706 , H02K1/2766 , H02K29/03 , H02K2201/06
Abstract: A permanent magnet electric machine includes a rotor configured to rotate about an axis. The rotor is comprised of axially stacked sections. Each section is comprised of axially stacked laminations that define a pattern of axial grooves on an outer surface of the rotor to reduce torque ripple. The pattern is different for at least two of the sections. The pattern for each section may alternate with respect to poles of the rotor.
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公开(公告)号：US11018567B2
公开(公告)日：2021-05-25
申请号：US15720754
申请日：2017-09-29
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , Lusu Guo , Michael W. Degner , Wei Wu , Chun Tang
Abstract: A permanent magnet machine includes a rotor and an irregular polyhedron shaped magnet assembly. The rotor may define at least one magnet opening and may be configured to rotate within a circular opening defined by a stator. The irregular polyhedron shaped magnet assembly may be disposed in the magnet opening and may define a magnetization direction, wherein a height along the magnetization direction and perpendicular with a lamination plane of the rotor is greater at both ends than at a central portion disposed therebetween.
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Patent Agency Ranking
公开(公告)号：US20180361842A1
公开(公告)日：2018-12-20
申请号：US15623700
申请日：2017-06-15
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , C Bing Rong , Michael W. Degner , Lusu Guo
Abstract: A hybrid powertrain utilizes a motor with a permanent magnet rotor. The rotor is formed by inserting parallelepiped magnets into slots. To reduce the likelihood of demagnetization, the net magnetization of each magnet is oriented parallel to a sidewards surface of the magnet and not perpendicular to an outwards surface of the magnet. The magnets may be arranged in multiple rows. The magnets in each row may be perpendicular to a rotor radial or diagonal to a rotor diagonal.
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公开(公告)号：US10749391B2
公开(公告)日：2020-08-18
申请号：US15450881
申请日：2017-03-06
Applicant: Ford Global Technologies, LLC
Inventor： Michael W. Degner , Feng Liang , Lusu Guo , Leyi Zhu
Abstract: A rotor includes a unitary, single material substrate defining a rotor lamination having pockets defining legs and configured to contain permanent magnets therein to establish a magnetic pole of the rotor. The rotor includes a first region having a predefined magnetic permeability. The rotor includes a second region defined between the legs and an outer periphery of the lamination. The second region has a magnetic permeability less than the first region to reduce torque ripple of a predetermined harmonic order.
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公开(公告)号：US20180254675A1
公开(公告)日：2018-09-06
申请号：US15450881
申请日：2017-03-06
Applicant: Ford Global Technologies, LLC
Inventor： Michael W. Degner , Feng Liang , Lusu Guo , Leyi Zhu
IPC: H02K1/27
Abstract: A rotor includes a unitary, single material substrate defining a rotor lamination having pockets defining legs and configured to contain permanent magnets therein to establish a magnetic pole of the rotor. The rotor includes a first region having a predefined magnetic permeability. The rotor includes a second region defined between the legs and an outer periphery of the lamination. The second region has a magnetic permeability less than the first region to reduce torque ripple of a predetermined harmonic order.
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公开(公告)号：US10432047B2
公开(公告)日：2019-10-01
申请号：US15664626
申请日：2017-07-31
Applicant: FORD GLOBAL TECHNOLOGIES, LLC
Inventor： Feng Liang , Lusu Guo , Michael W. Degner
Abstract: A rotor for a permanent magnet machine includes a first and second stack of same laminations. The laminations are configured to rotate about an axis and define poles and axial grooves on a circumferential surface that are asymmetric about a centerline of each of the poles. The stacks are coupled such that the second stack is flipped relative to the first stack and centerlines of the first stack are aligned with centerlines of the second stack.
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公开(公告)号：US20190103795A1
公开(公告)日：2019-04-04
申请号：US15720754
申请日：2017-09-29
Applicant: Ford Global Technologies, LLC
Inventor： Feng Liang , Lusu Guo , Michael W. Degner , Wei Wu , Chun Tang
Abstract: A permanent magnet machine includes a rotor and an irregular polyhedron shaped magnet assembly. The rotor may define at least one magnet opening and may be configured to rotate within a circular opening defined by a stator. The irregular polyhedron shaped magnet assembly may be disposed in the magnet opening and may define a magnetization direction, wherein a height along the magnetization direction and perpendicular with a lamination plane of the rotor is greater at both ends than at a central portion disposed therebetween.
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