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公开(公告)号：US20170133959A1
公开(公告)日：2017-05-11
申请号：US15341363
申请日：2016-11-02
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
IPC: H02P6/10
Abstract: A rotating electric machine drive system includes a rotating electric machine and a drive apparatus. The rotating electric machine includes a Y-connected three-phase stator coil. The drive apparatus supplies electric current to the stator coil and thereby drives the rotating electric machine. In a predetermined low-torque region, the drive apparatus supplies the stator coil with the electric current which has a waveform obtained by superimposing a specific harmonic waveform on a first-order harmonic waveform. The specific harmonic waveform is one of third-order and (3+6n)th-order harmonic waveforms, or a harmonic waveform which is obtained by synthesizing at least two of the third-order and (3+6n)th-order harmonic waveforms, where n is a natural number not less than 1. The specific harmonic waveform takes a positive integral value for a positive half cycle of the first-order harmonic waveform and a negative integral value for a negative half cycle of the first-order harmonic waveform.
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公开(公告)号：US20150108857A1
公开(公告)日：2015-04-23
申请号：US14516802
申请日：2014-10-17
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
Abstract: A stator for a rotating electric machine includes an annular stator core, a stator coil and a resin adhesive. The stator coil is formed of a plurality of electric wires that are mounted on the stator core so as to be received in slots of the stator core. The resin adhesive is filled in the slots of the stator core to fix the electric wires in the slots. Each of the electric wires forming the stator coil includes an electric conductor and an insulating coat that covers an outer surface of the electric conductor. The insulating coat is two-layer structured to include an inner coat and an outer coat that is formed outside the inner coat. The coefficient of linear expansion of the outer coat is higher than the coefficient of linear expansion of the inner coat and lower than the coefficient of linear expansion of the resin adhesive.
Abstract translation: 用于旋转电机的定子包括环形定子芯，定子线圈和树脂粘合剂。 定子线圈由安装在定子铁芯上的多条电线形成，以便被容纳在定子铁芯的槽中。 树脂粘合剂填充在定子芯的槽中，以将电线固定在槽中。 形成定子线圈的每根电线包括覆盖电导体的外表面的电导体和绝缘涂层。 绝缘涂层是双层结构的，包括内涂层和形成在内涂层外部的外涂层。 外涂层的线膨胀系数高于内涂层的线膨胀系数，低于树脂粘合剂的线膨胀系数。
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公开(公告)号：US20140125186A1
公开(公告)日：2014-05-08
申请号：US14073023
申请日：2013-11-06
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI , Masahiro SEGUCHI , Hideaki SUZUKI
IPC: H02K3/28
CPC classification number: H02K3/28 , H02K3/12 , H02K2213/03
Abstract: In a stator having a stator core and three phase windings, slots are formed in the stator core. The phase winding are accommodated in layers, from one side to the other side in the corresponding slot along a radial direction of the stator core. The phase windings are arranged in a star-delta composite connection structure. The phase winding in each phase is comprised of conductors accommodated in a first slot and a second slot adjacently arranged in the stator core so that the conductor in the n-th layer is electrically connected to the conductor in the (n+1)-th layer, ascending order, per slot. Because each winding has the same length and no difference in electric potential occurs between the star connection and the delta connection, this structure suppress generation of operation noise and a circulating current through the stator core and prevents loss due to the circulating current.
Abstract translation: 在具有定子铁心和三相绕组的定子中，在定子铁芯中形成有槽。 相绕组沿着定子芯的径向从相对应的槽中的一侧到另一侧分层地容纳。 相绕组布置成星形 - 三角形复合连接结构。 每相中的相绕组包括容纳在第一槽中的导体和相邻布置在定子芯中的第二槽，使得第n层中的导体在第（n + 1）次中与导体电连接 层，升序，每个插槽。 因为每个绕组具有相同的长度，并且在星形连接和三角形连接之间没有发生电位差，所以这种结构抑制了运行噪声的产生和通过定子铁心的循环电流并且防止由于循环电流引起的损耗。
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公开(公告)号：US20140125185A1
公开(公告)日：2014-05-08
申请号：US14069677
申请日：2013-11-01
Applicant: DENSO CORPORATION
Inventor： Hideaki SUZUKI , Masahiro SEGUCHI , Yuki TAKAHASHI
IPC: H02K3/28
Abstract: A stator includes a hollow cylindrical stator core and a stator coil. The stator core has a plurality of slots formed therein. The stator coil is provided in the slots of the stator core in a plurality of layers in a radial direction of the stator core, and includes a first winding and a second winding. The first winding extends around the stator core so as to be located at the (2n−1)th and 2nth layers of the stator coil, and has an end located at the 2nth layer, where n is a natural number. The second winding extends around the stator core so as to be located at the (2n+1)th and (2n+2)th layers of the stator coil, and has an end located at the (2n+1)th layer. The ends of the first and second windings, which are respectively located at the 2nth and (2n+1)th layers, are electrically connected to each other.
Abstract translation: 定子包括中空圆柱形定子芯和定子线圈。 定子芯具有形成在其中的多个槽。 定子线圈在定子铁芯的径向方向上设置在定子铁芯的槽中，并且包括第一绕组和第二绕组。 第一绕组围绕定子铁心延伸，以便位于定子线圈的第（2n-1）和第2n层，并且具有位于第2n层的端，其中n是自然数。 第二绕组围绕定子铁心延伸，以便位于定子线圈的第（2n + 1）和（2n + 2）层，并且具有位于第（2n + 1）层的端部。 分别位于第2n和第（2n + 1）层的第一和第二绕组的端部彼此电连接。
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公开(公告)号：US20220263396A1
公开(公告)日：2022-08-18
申请号：US17739371
申请日：2022-05-09
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
Abstract: In a rotating electrical machine, conductive portions of multiphase armature windings are arranged in a circumferential direction. Each of the conductor portions has a selected value of a radial thickness at which a product of a transverse sectional area of the corresponding one of the conductor portions and a value of an interlinkage magnetic flux of a magnet unit to the corresponding one of the conductor portions at a selected operating point of the magnet unit has a maximum value or a value adjacent to the maximum value. The selected operating point of the magnet unit corresponds to the selected value of the radial thickness of each of the conductor portions.
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Patent Agency Ranking
公开(公告)号：US20220263394A1
公开(公告)日：2022-08-18
申请号：US17735787
申请日：2022-05-03
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
IPC: H02K21/02
Abstract: A rotating electrical machine includes an armature including multi-phase armature winding, a first field generator disposed radially outside the armature winding and includes a magnet unit including several magnetic poles with polarities alternating circumferentially to the armature, and a second field generator radially inside the armature winding and equipped with a magnet unit including a plurality of magnetic poles with polarities alternating circumferentially to the armature. The armature or combination of the first and second field generators rotates along with a rotating shaft. The magnet unit of the first field generator include magnetic poles having magnetic polarity different from the corresponding poles of the second field generator radially from the armature. The armature winding includes a rectangular wire conductor whose transverse section has long sides and short sides extending perpendicular to the long sides. The rectangular wire winds in the circumferential direction with oriented long sides extending radially.
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公开(公告)号：US20220224257A1
公开(公告)日：2022-07-14
申请号：US17706739
申请日：2022-03-29
Applicant: DENSO CORPORATION
Inventor： Minoru ISHIDA , Tsubasa SAKUISHI , Yuki TAKAHASHI
Abstract: A drive system establishes a normal state in which a first switch is ON and a gang switch is OFF, in the case where it is determined that there is no abnormality in the state of a first rotating body driven by a first motor. In this normal state, the first motor is driven by a first inverter, while a second motor is driven by a second inverter. It the case where it is determined that there is abnormality in the state of the first rotating body, a first countermeasure state is established in which the first switch is OFF and the gang switch is ON. In this first countermeasure state, the second motor is driven by both the first inverter and the second inverter.
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公开(公告)号：US20220216760A1
公开(公告)日：2022-07-07
申请号：US17699786
申请日：2022-03-21
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
Abstract: An armature is provided with an armature winding, an armature core and a first and second insulation sheets. The first insulation sheet is arranged to sequentially pass through a field magnet side of a first phase conductor, a portion between the first phase conductor and a second phase conductor, an armature core side of the second phase conductor and a third phase conductor and a portion between the third phase conductor and the first phase conductor. The second insulation sheet is arranged to sequentially pass through a portion opposite to the first phase conductor with respect to the first insulation sheet, a field magnet side of the second conductor, a portion between the second phase conductor and the third phase conductor, a portion between the third phase conductor and the first insulation sheet and a portion between the third phase conductor and the first insulation sheet.
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公开(公告)号：US20220209633A1
公开(公告)日：2022-06-30
申请号：US17690521
申请日：2022-03-09
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI
IPC: H02K21/02
Abstract: A rotating electrical machine equipped with a magnet unit and a magnetic body. The magnet unit is also equipped with magnet covers wrapped about armature-facing peripheral surfaces of the magnets. Each of the magnets has recesses formed in portions of the armature-facing peripheral surface which are located close to q-axes each of which lies at a boundary between magnetic poles. Each of the magnet covers is recessed in the radial direction in accordance with the shape of the magnet recesses. If the armature-facing peripheral surface of the magnets is between a circumferentially adjacent two of the magnet recesses is defined as a main magnetic pole surface, and an angle representing a circumferential range occupied by the main magnetic pole surface is defined as a main magnetic pole angle θa, the main magnetic pole angle θa is selected to be 2π/5
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公开(公告)号：US20220006358A1
公开(公告)日：2022-01-06
申请号：US17481650
申请日：2021-09-22
Applicant: DENSO CORPORATION
Inventor： Yuki TAKAHASHI , Makoto TANIGUCHI
Abstract: A rotating electrical machine includes a rotor and a magnet unit. The rotating electrical machine also includes a cylindrical stator and a housing. The stator is equipped with a stator winding made up of a plurality of phase windings. The stator is arranged coaxially with the rotor and faces the rotor. The housing has the rotor and the stator disposed therein. The rotor includes a cylindrical magnet retainer to which the magnet unit is secured and an intermediate portion which connects between a rotating shaft of the rotor and the magnet retainer and extends in a radial direction of the rotating shaft. A first region located radially inside an inner peripheral surface of a magnetic circuit component made up of the stator and the rotor is greater in volume than a second region between the inner peripheral surface of the magnetic circuit component and the housing in the radial direction.
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