公开(公告)号：US10756661B2

公开(公告)日：2020-08-25

申请号：US16440263

申请日：2019-06-13

Applicant: DENSO CORPORATION

Inventor： Masahiro Seguchi ,  Junichi Nakazono

IPC: H02P23/26 ,  H02P6/32 ,  H02P27/08 ,  H02K1/24

Abstract: A field winding type rotating electric machine, whose power factor is cos θ, includes a stator, a rotor with a field winding, a rectifying element, a drive unit and a control unit. When performing rectangular-wave or overmodulation energization, the control unit generates a voltage pulse pair, which induces a current pulse pair, by: setting a reference time to the center of an ON duration or OFF duration of a control signal of a first phase; and providing a temporary ON duration and a temporary OFF duration after a predetermined angle from the reference time. The predetermined angle is within a predetermined range including cos−1 θ in electrical angle. The temporary ON duration is provided to temporarily turn ON a control signal of a second phase during an OFF duration thereof. The temporary OFF duration is provided to temporarily turn OFF a control signal of a third phase during an ON duration thereof.

公开(公告)号：US09570947B2

公开(公告)日：2017-02-14

申请号：US14030438

申请日：2013-09-18

Applicant: DENSO CORPORATION

Inventor： Junichi Nakazono

IPC: H02K1/27

CPC classification number: H02K1/27 ,  H02K1/2766

Abstract: The electric rotating machine includes a stator having an inner hole, a rotor disposed in the inner hole of the stator with a gap with an inner periphery of the stator and formed with magnet housing holes each housing a permanent magnet as a magnetic pole embedded in the outer periphery of the rotor, and a shaft pressure-inserted into a center hole of the rotor. The rotor includes, for each adjacent two of the magnet housing holes, a beam portion formed radially outside the magnet housing holes, a projecting portion projecting radially inward to define the center hole, an extension portion formed radially outside the projecting portion and radially outside the magnet holes, and a plate-shaped bridge portion connecting the beam portion and the extension portion.

Abstract translation: 旋转电机包括具有内孔的定子，设置在定子的内孔中的转子，与定子的内周具有间隙，并形成有磁体容纳孔，每个磁体容纳孔，嵌入永磁体 转子的外周，以及被压入插入转子的中心孔的轴。 对于每个相邻的两个磁体容纳孔，转子包括在磁体容纳孔的径向外侧形成的梁部分，径向向内突出以限定中心孔的突出部分，形成在突出部分的径向外侧的径向外侧 磁孔和连接梁部分和延伸部分的板状桥接部分。

公开(公告)号：US10727773B2

公开(公告)日：2020-07-28

申请号：US16448519

申请日：2019-06-21

Applicant: DENSO CORPORATION

Inventor： Masahiro Seguchi ,  Junichi Nakazono

IPC: H02P25/098 ,  H02P6/32 ,  H02K19/12

Abstract: A field winding type rotating electric machine includes: a stator armature winding wound on a stator core; a rotor field winding wound on a rotor core; a rectifying element connected to both ends of the rotor field winding; a capacitor having one end connected to one end of the rectifying element and the other end connected between the two ends of the rotor field winding; and a control circuit configured to supply electric current, which includes a fundamental component for generating rotational torque and a harmonic component having a shorter period than the fundamental component and superimposed on the fundamental component, to the stator armature winding and thereby induce excitation current in the rotor field winding. Moreover, an inductance of the rotor field winding and a capacitance of the capacitor are in a resonant relationship with a frequency of the harmonic component.

公开(公告)号：US09124156B2

公开(公告)日：2015-09-01

申请号：US13909353

申请日：2013-06-04

Applicant: DENSO CORPORATION

Inventor： Hiroyuki Ikuta ,  Atsuo Ishizuka ,  Junichi Nakazono

IPC: H02K1/27 ,  H02K15/12

CPC classification number: H02K1/2706 ,  H02K1/276 ,  H02K15/12

Abstract: The rotor for an electric rotating machine includes a rotor core fixed to a rotating shaft and formed with at least one magnet accommodating hole, a magnet accommodated in the magnet accommodating hole, a resin portion filled in the magnet accommodating hole accommodating the magnet, a first end plate fixed to the rotating shaft at one axial side of the rotor core, and a second end plate fixed to the rotating shaft at the other axial side of the rotor core. The axial fixing force of the second end plate against the rotating shaft is smaller than that of the first end plate. At least a part of the resin portion is present in an axial area between the magnet accommodated in the magnet accommodating hole and the first end plate, and the magnet is in direct contact with the second end plate.

Abstract translation: 旋转电机的转子包括固定在旋转轴上的转子芯体，形成有至少一个磁体容纳孔，容纳在磁体容纳孔中的磁体，填充在容纳磁体的磁体容纳孔中的树脂部分，第一 端板固定在转子芯的一个轴向侧的旋转轴上，第二端板固定在转子芯的另一个轴向侧的旋转轴上。 第二端板抵靠旋转轴的轴向固定力小于第一端板的轴向固定力。 树脂部分的至少一部分存在于容纳在磁体容纳孔中的磁体与第一端板之间的轴向区域中，并且磁体与第二端板直接接触。

公开(公告)号：US09531225B2

公开(公告)日：2016-12-27

申请号：US14030438

申请日：2013-09-18

Applicant: DENSO CORPORATION

Inventor： Junichi Nakazono

IPC: H02K1/27

Abstract: The electric rotating machine includes a stator having an inner hole, a rotor disposed in the inner hole of the stator with a gap with an inner periphery of the stator and formed with magnet housing holes each housing a permanent magnet as a magnetic pole embedded in the outer periphery of the rotor, and a shaft pressure-inserted into a center hole of the rotor. The rotor includes, for each adjacent two of the magnet housing holes, a beam portion formed radially outside the magnet housing holes, a projecting portion projecting radially inward to define the center hole, an extension portion formed radially outside the projecting portion and radially outside the magnet holes, and a plate-shaped bridge portion connecting the beam portion and the extension portion.

公开(公告)号：US09343937B2

公开(公告)日：2016-05-17

申请号：US14028919

申请日：2013-09-17

Applicant: DENSO CORPORATION

Inventor： Junichi Nakazono ,  Kiyokazu Futami ,  Seiji Tachibana

IPC: H02K21/12 ,  H02K1/06 ,  H02K1/28 ,  H02K1/27

CPC classification number: H02K1/28 ,  H02K1/2766

Abstract: In a rotary electric machine having a rotor core of a skew structure, when one of the core blocks is sequentially stacked on the other of the core blocks to form a step skew, a communication reference groove is formed along an axial direction of the rotor core by aligning a side section of a short protruding section in one core block with a side section of the long protruding sections in the other core block, and by aligning a side section of a long protruding section in one core block with a side section of a short protruding section in the other core block. The core blocks are correctly stacked by aligning the side section of the long protruding sections with the side section of the short protruding sections.

Abstract translation: 在具有歪斜结构的转子铁心的旋转电机中，当芯块中的一个顺序地堆叠在另一个芯块上以形成歪斜时，沿着转子芯的轴向形成连通基准槽 通过将一个芯块中的短突出部分的侧部与另一个芯块中的长突出部分的侧部对齐，并且将一个芯块中的长突出部分的侧部与其中的一个部分 另一个芯块中的短突出部分。 通过将长突出部分的侧部与短突出部分的侧部对准，芯块被正确堆叠。