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公开(公告)号：US20200185988A1
公开(公告)日：2020-06-11
申请号：US16317744
申请日：2017-07-12
Applicant: LG INNOTEK CO., LTD.
Inventor： Shung Hun WOO , Jung Kyu LEE
Abstract: The present invention provides rotor including: a rotor core having a cylindrical shape; and a plurality of magnets disposed to surround an outer circumferential surface of the rotor core, wherein the magnet includes an inner circumferential surface in contact with the outer circumferential surface of the rotor core, when a first angle is defined by dividing an angle formed by the outer circumferential surface of the rotor core by the number of magnets, a second angle is formed by a first extension line and a second extension line which extend from both end points of the inner circumferential surface of the magnet to a center point of the rotor core on cross sections of the rotor core and the magnet, and a ratio of the second angle to the first angle is in a range of 0.87 to 0.93, thereby providing an advantageous effect of greatly reducing a cogging torque by decreasing a width of the magnet to double a cogging main degree.
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公开(公告)号：US10658911B2
公开(公告)日：2020-05-19
申请号：US16077700
申请日：2017-02-13
Applicant: ZHENGZHOU JITIAN PATENT OPERATION CO., LTD.
Inventor： Chun Zhang
IPC: H02K19/00 , H02K19/10 , F04C2/16 , H02K29/03 , H02K1/14 , H02K1/24 , B60K6/00 , B60K17/14 , B60K17/356 , H02K7/14
Abstract: The present invention belongs to the field of motors, and specifically relates to a switched reluctance motor of a novel structure. The switched reluctance motor includes stator tooth poles and rotor tooth poles, the rotor tooth poles are in rotation fit relative to the stator tooth poles, wherein the number of the stator tooth poles is twice as large as that of the rotor tooth poles; the stator tooth poles are fixedly connected in layers along the direction of a rotation axis, the stator tooth pole with thickness corresponding to the thickness range of the rotor tooth pole is called a rotor tooth pole unit, the stator tooth pole is composed of a stator tooth pole iron core and a stator tooth pole coil sleeved at the outside of the stator tooth pole iron core, an end part of the stator tooth pole iron core forming an air gap with the rotor tooth pole is a concave-convex fit circular arc surface, the cooperation relationship between the stator tooth pole and the rotor tooth pole is that no matter the rotor tooth pole rotates to any angle relative to the stator tooth pole, the center line of at least one layer of stator tooth poles forms an included angle α with the center line of the corresponding rotor tooth pole unit, 0
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公开(公告)号：US10608509B2
公开(公告)日：2020-03-31
申请号：US15294870
申请日：2016-10-17
Applicant: Roul Delroy Martin
Inventor： Roul Delroy Martin
IPC: H02K11/21 , H02K11/33 , H02K29/03 , H02P6/10 , H02K16/00 , H02P1/00 , H02K51/00 , H02K21/24 , H02J7/00 , H02K7/00 , H02K11/00 , H02K11/20 , H02K11/30
Abstract: An apparatus includes a rotatable common shaft configured to be rotatable about a longitudinal shaft axis extending along the rotatable common shaft. Rotatable electric machines are arranged on the rotatable common shaft. This is done in such a way that disk assemblies of the rotatable electric machines and the rotatable common shaft are concurrently rotatable. The rotatable electric machines are arranged on the rotatable common shaft in such a way that the net cogging force, which is generated by the rotatable electric machines, and which is imparted to the rotatable common shaft, is reduced.
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公开(公告)号：US20200091805A1
公开(公告)日：2020-03-19
申请号：US16495118
申请日：2017-12-20
Applicant: SCHAEFFLER TECHNOLOGIES AG & CO. KG
Inventor： Jörg KEGELER , André SPÖRER
Abstract: A dynamo-electric machine includes a primary part having a plurality of teeth, grooves that are located between the teeth and a yoke that is produced from a ferromagnetic material, a secondary part that is spaced apart from the primary part via an air gap and comprises a plurality of permanent magnets that lie adjacent to one another with alternating polarity, a multi-phase tooth coil winding that is arranged in the grooves, wherein adjacent tooth coils are connected to form groups having an identical electrical phase, wherein adjacent teeth of the groups of tooth coils having an identical electrical phase are connected in a magnetically conductive manner via the yoke and the yoke is interrupted between adjacent tooth coils having a different electrical phase.
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公开(公告)号：US10530208B2
公开(公告)日：2020-01-07
申请号：US15740988
申请日：2016-06-08
Applicant: Robert Bosch GmbH
Inventor： Dirk Buehler , Milorad Risticevic , Steven Andrew Evans
Abstract: The invention describes an electrical machine comprising a stator and a rotor which is separated from the stator by an air gap and has a plurality of shell-like magnet segments which are fastened to a magnetic return path element. In this case, the magnet segments are arranged opposite one another in pairs in each case and each have a plurality of magnetically differently polarized sections in the circumferential direction, said sections each forming a magnetic pole of the rotor. In this case, recesses which each serve as outer detached pole portions are provided on that side which faces the stator in the edge zones of the magnet segments which are arranged in the circumferential direction. Furthermore, further recesses are provided on that side which faces the stator in the transition zones between the magnetically differently polarized sections of the magnet segments, said recesses serving as inner detached pole portions.
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Patent Agency Ranking
公开(公告)号：US20190393746A1
公开(公告)日：2019-12-26
申请号：US16402460
申请日：2019-05-03
Applicant: Nidec Corporation
Inventor： Shinji TAKEMOTO , Tomoya UEDA , Yusuke ISOGAI
Abstract: A rotatable about a center axis includes a rotor core including an annular inner core portion extending along a circumferential direction, and outer core portions spaced apart along the circumferential direction on an outer side in a radial direction of the inner core portion, magnets each positioned between the outer core portions adjacent to each other in the circumferential direction, and a support that supports the rotor core and the magnet. The support includes an inner support portion that supports the magnet on an inner side in a radial direction of the magnet, an outer support portion that supports the magnet on an outer side in a radial direction of the magnet, and a bridge portion that extends in the radial direction to connect the inner support portion and the outer support portion. The outer core portion includes a penetrating portion that penetrates the outer core portion in the radial direction. At least a portion of the bridge portion is positioned inside the penetrating portion.
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公开(公告)号：US10514011B2
公开(公告)日：2019-12-24
申请号：US15766431
申请日：2016-10-04
Applicant: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
Inventor： Tatsuya Arai
IPC: F02N11/04 , H02P9/04 , F02N11/08 , H02P6/28 , H02P6/182 , H02P1/46 , H02P6/18 , H02P6/20 , H02P9/00 , H02K21/22 , H02K3/28 , H02K29/03
Abstract: A starting power generation apparatus according to an embodiment of the present invention includes: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the positional relationship detected. The control unit is configured to detect the positional relationship when the starter generator is stopped, based on time widths of two or more predetermined voltages generated in two or more windings constituting the second multi-phase winding in a case that an output voltage of the battery is applied to the first multi-phase winding for a predetermined time in a state where current input and output via the second AC terminals is off.
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公开(公告)号：US10480475B2
公开(公告)日：2019-11-19
申请号：US15766431
申请日：2016-10-04
Applicant: SHINDENGEN ELECTRIC MANUFACTURING CO., LTD.
Inventor： Tatsuya Arai
IPC: F02N11/04 , H02P9/04 , F02N11/08 , H02P6/28 , H02P6/182 , H02P1/46 , H02P6/18 , H02P6/20 , H02P9/00 , H02K21/22 , H02K3/28 , H02K29/03
Abstract: A starting power generation apparatus according to an embodiment of the present invention includes: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the positional relationship detected. The control unit is configured to detect the positional relationship when the starter generator is stopped, based on time widths of two or more predetermined voltages generated in two or more windings constituting the second multi-phase winding in a case that an output voltage of the battery is applied to the first multi-phase winding for a predetermined time in a state where current input and output via the second AC terminals is off.
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公开(公告)号：US10476326B2
公开(公告)日：2019-11-12
申请号：US15745860
申请日：2016-12-16
Applicant: Hanon Systems
Inventor： Jeong Gil Heo , Chan Ho Baek , Bong Kyun Seo
Abstract: A rotor is for a permanent magnet embedded-type motor and a motor using the same. A rotor for a permanent magnet embedded-type motor includes a rotor core having a rotary shaft fixed to a center and having a plurality of magnet insertion holes formed to be spaced along a circumferential direction and a plurality of pairs of permanent magnets, respectively, inserted into each of the plurality of magnet insertion holes in a V-shape to be gradually spaced apart from each other toward a radially outer side. Each of the plurality of magnet insertion holes includes a pair of inner sides facing each other, and a barrier hole is formed to expand an inner space of each of the magnet insertion holes to protrude from the pair of inner sides, respectively.
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公开(公告)号：US10447184B2
公开(公告)日：2019-10-15
申请号：US15779043
申请日：2016-11-18
Applicant: Hitachi Automotive Systems Engineering, Ltd.
Inventor： Hiroshi Kanazawa , Kenji Nakayama , Hideyuki Hara
Abstract: Provided is a rotating electrical machine in which torque ripple can be decreased at the time of one-side electrical current supply. A motor includes a stator coil constituted by concentrated windings arranged to teeth where an integer N≥2. The stator coil includes first and second winding units and each of which is constituted by windings and which are independent from each other, the windings constituting the first winding unit are arranged in three teeth groups, each of which includes adjacent teeth and which are provided at 120-degree pitches in terms of mechanical angle, and the windings constituting the second winding unit are arranged in teeth which are the teeth not included in the three teeth groups. That is, the windings constituting the second winding unit are also arranged in three teeth groups, which are provided at 120-degree pitches in terms of mechanical angle.
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