公开(公告)号：US20210075305A1

公开(公告)日：2021-03-11

申请号：US16961959

申请日：2018-02-28

Applicant: Mitsubishi Electric Corporation

Inventor： Yuji TAKIZAWA ,  Hiroko IKEDA ,  Shinichi YAMAGUCHI ,  Yu HIROTANI ,  Masafumi OKAZAKI ,  Satoru AKUTSU

IPC: H02K29/03 ,  H02K1/27 ,  H02K21/14

Abstract: A permanent magnet motor includes a rotor having a field pole of a rotor core, wherein the field pole has a radius smaller than an arc centered on a shaft of the rotor, a multiple of slits are formed in the field pole, the multiple of slits are disposed so that an interval between a first central line positioned between a multiple of the slits and a second central line positioned between a neighboring multiple of the slits increases as the first central line and the second central line head toward an outer peripheral side of the rotor core, and of the multiple of slits of the field pole, a first slit disposed in a central position of the field pole, and a second slit and a third slit disposed on either side of the first slit, are disposed within 20% of a circumferential direction width of the permanent magnet.

公开(公告)号：US20170054339A1

公开(公告)日：2017-02-23

申请号：US15305882

申请日：2014-04-24

Applicant: Mitsubishi Electric Corporation

Inventor： Masaya HARAKAWA ,  Kenta OZAKI ,  Shinichi YAMAGUCHI ,  Kentaro HORISAKA ,  Kazuaki ANDO ,  Koki NAKA

IPC: H02K3/28 ,  H02K1/27 ,  H02K3/12 ,  H02K1/14

CPC classification number: H02K3/28 ,  H02K1/146 ,  H02K1/2706 ,  H02K3/12

Abstract: A stator of a rotary electrical machine according to the invention includes a core back, a plurality of teeth, a plurality of slots, and a coil. The coil is configured by a plurality of conductor wires. Between inside of the slot and outside of the slot, the plurality of conductor wires are bent at an angle smaller than 180° in a circumferential direction of the core back, and between the bent part and the inside of the slot, the plurality of conductor wires are bent in the circumferential direction of the core back and in an opposite direction to a bending direction of the bent part.

Abstract translation: 根据本发明的旋转电机的定子包括芯背，多个齿，多个槽和线圈。 线圈由多条导线构成。 在槽的内部和槽的外侧之间，多个导线在芯背的圆周方向上以小于180°的角度弯曲，并且在弯曲部与槽的内部之间弯曲，多个导体 电线在芯部的周向上沿着与弯曲部的弯曲方向相反的方向弯曲。

公开(公告)号：US20200274406A1

公开(公告)日：2020-08-27

申请号：US16303780

申请日：2017-03-27

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Tomoya UCHIMURA ,  Shinichi YAMAGUCHI

IPC: H02K1/27 ,  H02K21/14

Abstract: Provided is a rotor for a permanent magnet rotary electric machine, which enables the bonding of a permanent magnet to a rotor core in a skewed manner with respect to an axial direction of the rotor core. The rotor includes a rotor core including a cylindrical portion and a pair of polygonal colmnar portions provided to both ends of the cylindrical portion in the axial direction, and a permanent magnet having a bonding surface, which is flat and bonded to the rotor core. The pair of polygonal columnar portions has flat surfaces that are arranged so that center positions are spaced apart from each other as viewed in the axial direction. The bonding surface of the permanent magnet is bonded to the respective flat surfaces of the pair of polygonal columnar portions under a state in which the permanent magnet is skewed with respect to the axial direction.

公开(公告)号：US20190036437A1

公开(公告)日：2019-01-31

申请号：US16078977

申请日：2017-01-26

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Kenta MOTOYOSHI ,  Ariff ZAINI ,  Kazumasa ITO ,  Toshinori TANAKA ,  Shinichi YAMAGUCHI

IPC: H02K41/03 ,  H02K1/14 ,  H02K21/02 ,  H02K1/16

Abstract: A synchronous linear motor, including: a stator including projecting poles including magnetic bodies; and a movable element arranged opposed to the projecting poles through a space. The movable element includes a core with a magnetic body, coils, and permanent magnets arrayed along a moving direction. The core includes core backs and teeth projecting from the core backs toward the projecting poles. The coils are at least wound around the teeth on both end sides in the moving direction. The permanent magnets are arranged at center portions of the teeth along a projecting direction of the teeth. A polarity of a magnetic pole of the permanent magnet is the same as a polarity of an opposed magnetic pole in an adjacent permanent magnet. The number of different shapes of the permanent magnets or the number of different magnetic characteristics of the permanent magnets is two or more.

公开(公告)号：US20180097433A1

公开(公告)日：2018-04-05

申请号：US15564067

申请日：2015-05-27

Applicant: Mitsubishi Electric Corporation

Inventor： Hiroshi WAKAYAMA ,  Ryutaro INAGAKI ,  Shinichi YAMAGUCHI ,  Kazumasa ITO ,  Kenta MOTOYOSHI

IPC: H02K41/02 ,  H02K33/00

CPC classification number: H02K41/02 ,  H02K1/18 ,  H02K3/521 ,  H02K33/00 ,  H02K41/031

Abstract: An armature has a plurality of armature cores arranged in a line in a first direction, coils wound on an area of the armature cores in a second direction, a carrier provided with a space in which to dispose the coils left in a third direction orthogonal to the first direction and the second direction with respect to the armature cores, and at least one mounting member to fix the armature cores and the carrier. The armature cores are fixed to the mounting member by first bolts, and the carrier is fixed to the mounting member by second bolts. The at least one mounting member, the first bolts, and the second bolts are disposed in positions not overlapping the coils when viewed from the third direction.

公开(公告)号：US20180019628A1

公开(公告)日：2018-01-18

申请号：US15548444

申请日：2016-01-28

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Kazumasa ITO ,  Shinichi YAMAGUCHI ,  Haruyuki KOMETANI ,  Masatsugu NAKANO ,  Norihiro ACHIWA ,  Yoshiki MAEDA ,  Masaya HARAKAWA

IPC: H02K1/24

CPC classification number: H02K1/246 ,  H02K1/22 ,  H02K1/24 ,  H02K1/276 ,  H02K29/03 ,  H02K2213/03

Abstract: With regard to an end portion shape of a slit formed in a rotor core in which flux barriers are formed in a circumferential direction in an identical number to the number of poles by arranging one or more slits and core layers alternately in a radial direction, an end portion of a slit is shaped such that, when mg is set as the number of slit end portions, ni is set as a natural number no smaller than 1, α and β are set as numbers within a range of −¼ to ¼, q is set as a natural number no smaller than 1, and Ns is set as the number of slots, intervals δgi and εgi from a first slit end to an ith slit end of a slit wall on an identical circumferential direction side satisfy specific mathematical formulae.

公开(公告)号：US20170019041A1

公开(公告)日：2017-01-19

申请号：US15121181

申请日：2014-02-28

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Makoto SUGIYAMA ,  Koki NAKA ,  Hisashi OTSUKA ,  Shinichi YAMAGUCHI ,  Eigo TOTOKI

IPC: H02P6/10 ,  H02P27/08 ,  H02P21/22 ,  H02K1/27

CPC classification number: H02P6/10 ,  H02K1/2706 ,  H02P21/141 ,  H02P21/22 ,  H02P21/26 ,  H02P27/08 ,  H02P27/085 ,  H02P29/032 ,  H02P2205/05

Abstract: A control device converts phase currents supplied to a permanent-magnet rotary motor into a d-axis current and a q-axis current on a dq coordinate axis, and calculates a current command (a d-axis current command or a q-axis current command) for changing at least one of values of the d-axis current and the q-axis current according to a rotor position, based on a torque command, the d-axis current and the q-axis current, so as to cause a magnitude of a reverse magnetic field acting on a permanent-magnet end part to be equal to or lower than a magnetic coercive force of a permanent magnet.

Abstract translation: 控制装置将提供给永磁体旋转电动机的相电流在dq坐标轴上转换为d轴电流和q轴电流，并计算电流指令（d轴电流指令或q轴电流 命令），用于根据转矩指令，d轴电流和q轴电流根据转子位置来改变d轴电流和q轴电流的值中的至少一个，从而使 作用于永磁体端部的反向磁场的大小等于或低于永磁体的磁矫顽力。

公开(公告)号：US20160261167A1

公开(公告)日：2016-09-08

申请号：US14397600

申请日：2014-03-18

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shinichi YAMAGUCHI ,  Koki NAKA ,  Takuro ISOGAI

IPC: H02K7/10 ,  H02K17/16 ,  H02K7/116

CPC classification number: H02K7/1004 ,  H02K7/116 ,  H02K17/16 ,  H02K17/32

Abstract: To maximize a power consumption reduction effect in a case of using a high-efficiency induction motor, when a conventional induction motor is changed to a high-efficiency induction motor, a mechanical device including an induction motor and a speed reduction mechanism related to the present invention increases the reduction ratio of the speed reducer such that the rotation speed of the mechanical device is equal to that in a case of using a conventional induction motor and thus the output of the mechanical device is made equal to that in a case of using a conventional inductor motor; therefore, the load conditions of the mechanical device such as a pump and a fan can be made equal to those in a case of using a conventional induction motor. Accordingly, the power consumption reduction effect by improving the efficiency of the induction motor can be maximized.

Abstract translation: 为了在使用高效率感应电动机的情况下最大化功耗降低效果，当将常规感应电动机改变为高效率感应电动机时，包括感应电动机和与现在相关的减速机构的机械装置 本发明增加了减速器的减速比，使得机械装置的转速等于使用常规感应电动机的转速，因此机械装置的输出与使用 常规电感电机; 因此，可以使诸如泵和风扇之类的机械装置的负载条件与使用常规感应电动机的情况相同。 因此，可以使通过提高感应电动机的效率的功耗降低效果最大化。

公开(公告)号：US20160254713A1

公开(公告)日：2016-09-01

申请号：US15033239

申请日：2014-01-06

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shinichi YAMAGUCHI ,  Yoshiki MAEDA ,  Kazuaki ANDO ,  Koki NAKA ,  Masaya HARAKAWA

IPC: H02K1/27

CPC classification number: H02K1/278 ,  H02K21/14 ,  H02K29/03 ,  H02K2201/03 ,  H02K2213/03

Abstract: A permanent magnet rotary electric machine includes: a stator in which a plurality of teeth and a plurality of slots are formed on an inner periphery of a cylindrical stator core, and a winding wire is wound around the teeth so as to be disposed in the slots; and a rotor disposed in a hollow portion of the stator with an air gap between the rotor and the stator. In the rotor, 2n or more (n is a natural number equal to or larger than 1) radial projections are provided on an outer periphery of a rotor core, and a ferrite magnet is disposed between adjacent projections. A radial height of the projection is less than a thickness of middle of the ferrite magnet.

Abstract translation: 一种永久磁铁旋转电机，其特征在于，具有：定子，其中在所述圆筒形定子铁芯的内周上形成有多个齿和多个狭缝，并且缠绕在所述齿周围的绕组线布置在所述槽中 ; 以及转子，其设置在定子的中空部分中，在转子和定子之间具有气隙。 在转子中，2n以上（n为1以上的自然数），在转子铁心的外周设有径向突起，铁素体磁铁配置在相邻突起之间。 突起的径向高度小于铁氧体磁体的中间厚度。

公开(公告)号：US20150326084A1

公开(公告)日：2015-11-12

申请号：US14650958

申请日：2012-12-13

Applicant: MITSUBISHI ELECTRIC CORPORATION

Inventor： Shinichi YAMAGUCHI ,  Koki NAKA ,  Kazuaki ANDO

IPC: H02K3/28 ,  H02K3/12

CPC classification number: H02K21/14 ,  H02K3/12 ,  H02K3/28 ,  H02K2201/06 ,  H02K2213/03

Abstract: A rotary electric machine is a rotary electric machine including a stator of a distributed winding type including a plurality of first slots, in each of which winding wires of a plurality of same phases or winding wires of one phase are arranged, and a plurality of second slots, in each of which winding wires of a plurality of different phases are arranged. The total number of turns in each of the first slots is same as one another. The total number of turns in each of the second slots is same as one another. The total number of turns in the first slot and the total number of turns in the second slot are different from each other.

Abstract translation: 一种旋转电机是一种旋转电机，其包括：分布绕组型的定子，包括多个第一槽，每个槽中布置有多个相位相或多相绕组的绕组线;以及多个第二槽 在其中布置有多个不同相的绕组线的槽。 每个第一槽中的总匝数彼此相同。 每个第二槽中的总匝数彼此相同。 第一时隙中的总匝数和第二时隙中的总匝数彼此不同。