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1. 发明公开

US20240171023A1 MOTOR THAT SUPPRESSES DEMAGNETIZATION OF PERMANENT MAGNET, FAN, AND AIR CONDITIONER 审中-公开
公开(公告)号：US20240171023A1
公开(公告)日：2024-05-23
申请号：US18422285
申请日：2024-01-25
申请人： Mitsubishi Electric Corporation
发明人： Takaya SHIMOKAWA , Hiroki ASO , Ryogo TAKAHASHI , Kazuma NOMOTO
IPC分类号： H02K1/276 , H02K7/14 , H02K9/06 , H02K11/33
CPC分类号： H02K1/276 , H02K7/14 , H02K9/06 , H02K11/33 , H02K1/2746 , H02K2213/03
摘要： A motor includes a rotor and a stator provided to surround the rotor. The rotor has a rotor core having a magnet insertion hole and a permanent magnet disposed in the magnet insertion hole and is rotatable about a rotation axis. The stator has a stator core with a tooth facing the rotor, and a coil wound around the tooth. The permanent magnet has a thickness thicker than or equal to 2.1 mm in a direction in which the permanent magnet faces the stator and is magnetized in a direction of the thickness. A minimum gap AG (mm) between the rotor and the stator, a winding number Nt of the coil around the tooth, an overcurrent threshold Ip (A) for a current flowing through the coil, and a lower limit Hct (kA/m) of a coercive force of the permanent magnet satisfy Hct≥0.4×(Ip×Nt/AG)+410.

2. 发明公开

US20230243360A1 BLOWER AND AIR CONDITIONER 审中-公开
公开(公告)号：US20230243360A1
公开(公告)日：2023-08-03
申请号：US17785668
申请日：2020-02-25
申请人： Mitsubishi Electric Corporation
发明人： Takaya SHIMOKAWA , Hiroki ASO , Naoki TAMURA , Kazuchika TSUCHIDA , Takanori WATANABE , Ryogo TAKAHASHI
IPC分类号： F04D25/06 , F04D29/66 , H02K7/14 , H02K1/2746
CPC分类号： F04D25/0646 , F04D29/66 , H02K7/14 , H02K1/2746
摘要： A blower includes a rotor that includes a shaft, a rotor core in an annular shape about at a central axis of the shaft, and permanent magnets attached to the rotor core. The permanent magnets form magnet magnetic poles, portions of the rotor core form virtual magnetic poles, and a number of magnetic poles including the magnet magnetic poles and the virtual magnetic poles is P. The blower includes a stator that surrounds the rotor from outside in a radial direction about the central axis and includes S slots arranged in a circumferential direction about the central axis, and N blades that are attached to the shaft and arranged in the circumferential direction. A combination of the number P of magnetic poles and the number S of slots is one of P=8 and S=9, P=10 and S=9, P=10 and S=12 and P=14 and S=12. The number N of blades is an integer greater than or equal to 2 and less than or equal to 10 excluding integral multiples of P/2.

3. 发明授权

US09705365B2 Motor 有权
公开(公告)号：US09705365B2
公开(公告)日：2017-07-11
申请号：US14685157
申请日：2015-04-13
申请人： ASMO CO., LTD.
发明人： Yoji Yamada , Koji Mikami , Takahiro Tsuchiya
IPC分类号： H02K1/27 , H02K1/24 , H02K21/16 , H02K19/10
CPC分类号： H02K1/243 , H02K1/2713 , H02K1/2746 , H02K19/103 , H02K21/16
摘要： A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other.

4. 发明授权

US09627936B2 Permanent magnet motor 有权
公开(公告)号：US09627936B2
公开(公告)日：2017-04-18
申请号：US14239968
申请日：2011-12-23
申请人： Masatsugu Nakano , Yoshihito Asao , Satoru Akutsu , Ryuichi Takiguchi , Yuji Takizawa , Yu Hirotani
发明人： Masatsugu Nakano , Yoshihito Asao , Satoru Akutsu , Ryuichi Takiguchi , Yuji Takizawa , Yu Hirotani
IPC分类号： H02K21/12 , H02K3/28 , H02K1/27 , H02K3/12 , H02K11/225 , H02K29/08 , H02K29/12 , H02K1/24
CPC分类号： H02K3/28 , H02K1/246 , H02K1/2746 , H02K1/276 , H02K1/2773 , H02K1/278 , H02K3/12 , H02K11/225 , H02K29/08 , H02K29/12
摘要： A permanent magnet motor in which electromagnetic excitation force of low spatial order is reduced, and influence of a magnetomotive force harmonic of a rotor and torque ripple is reduced. One set of armature windings receives current from a first inverter, and another set of armature windings receives current from a second inverter. Where a pole number of a rotor is M and the number of slots of a stator core is Q, M and Q satisfy M

5. 发明申请

US20160164355A1 MULTI-POLE COMPONENT FOR AN ELECTRIC MACHINE 审中-公开
标题翻译：电动机用多功能组件
公开(公告)号：US20160164355A1
公开(公告)日：2016-06-09
申请号：US14796056
申请日：2015-07-10
申请人： SIEMENS AKTIENGESELLSCHAFT
发明人： Ignacio Diaz Diaz , Matthias Dorfner , Zeljko Jajtic
IPC分类号： H02K1/27 , H02K3/12
CPC分类号： H02K1/2746 , H02K3/12 , H02K7/1838 , H02K41/02 , H02K41/031
摘要： A multi-pole component for an electric machine includes an upper side, a lower side, a first magnetic pole having a surface on the upper side, a second magnetic pole having a surface in a tangential direction adjacent to the first magnetic pole on the upper side and a soft-magnetic device. The soft-magnetic device has a recess between the first magnetic pole and the second magnetic pole. A vertical direction is directed from the upper side to the lower side at right angle to a tangential direction. The first magnetic pole has a permanent magnet with a magnetization in one direction, and the second magnetic pole does not have a permanent magnet.
摘要翻译：一种用于电机的多极部件包括上侧，下侧，具有上侧表面的第一磁极，具有与上部第一磁极相邻的切线方向的表面的第二磁极侧和软磁设备。软磁装置在第一磁极和第二磁极之间具有凹槽。垂直方向从上侧到下侧相对于切线方向成直角。第一磁极具有在一个方向上具有磁化的永磁体，并且第二磁极不具有永磁体。

6. 发明授权

US09337709B2 Axial gap type permanent magnet electric rotating apparatus and method of manufacturing the same 有权
标题翻译：轴向间隙型永磁电动旋转装置及其制造方法
公开(公告)号：US09337709B2
公开(公告)日：2016-05-10
申请号：US14324587
申请日：2014-07-07
申请人： KABUSHIKI KAISHA TOSHIBA
发明人： Yutaka Hashiba , Norio Takahashi , Makoto Matsushita , Masanori Arata , Toshio Hirano , Takaaki Hirose
IPC分类号： H02K21/24 , H02K15/03 , H02K1/27
CPC分类号： H02K21/24 , H02K1/27 , H02K1/2746 , H02K1/2793 , H02K15/03 , Y10T29/49012
摘要： According to one embodiment, there is provided an axial gap type permanent magnet electric rotating apparatus including a first and second rotor. All a magnetic-pole directions of a permanent magnets of the first and second rotor are the same. A portion between two permanent magnets along a circumferential direction of each rotor is made of a magnetic material having substantially the same size as that of the permanent magnet such that axial-direction surfaces are the same between the permanent magnets on two sides in the circumferential direction. Between the first rotor and the second rotor, a magnetic flux flows along an axial direction while making a loop and passes through an armature.
摘要翻译：根据一个实施例，提供一种包括第一和第二转子的轴向间隙型永磁电动旋转装置。第一和第二转子的永磁体的所有磁极方向都相同。沿着各个转子的圆周方向的两个永久磁铁之间的部分由与永久磁铁大致相同尺寸的磁性材料制成，使得在圆周方向上的两侧的永久磁铁之间的轴向表面相同。在第一转子和第二转子之间，磁通量沿着轴向流动，同时产生回路并通过电枢。

7. 发明申请

US20150295458A1 MOTOR 有权
标题翻译：发动机
公开(公告)号：US20150295458A1
公开(公告)日：2015-10-15
申请号：US14685157
申请日：2015-04-13
申请人： ASMO CO., LTD.
发明人： Yoji Yamada , Koji Mikami , Takahiro Tsuchiya , Hironari Suzuki , Seiya Yokoyama
IPC分类号： H02K1/24 , H02K1/27
CPC分类号： H02K1/243 , H02K1/2713 , H02K1/2746 , H02K19/103 , H02K21/16
摘要： A motor includes a stator, a rotor, a case, and back-surface magnet portions. The rotor has a first rotor core, a second rotor core and a field magnet. Each of the first and second rotor cores has a core base and claw-shaped magnetic poles. The field magnet is sandwiched between the first rotor core and the second rotor core and causes the claw-shaped magnetic poles of the first rotor core and the second rotor core to function as different magnetic poles. The back-surface magnet portions include a second and a first back-surface magnet portions respectively provided on the back surfaces of the claw-shaped magnetic poles of the second rotor core and the first rotor core. Size of the second back-surface magnet portion differs from size of the first back-surface magnet portion are different from each other.
摘要翻译：电动机包括定子，转子，壳体和后表面磁体部分。转子具有第一转子芯，第二转子芯和场磁体。第一和第二转子芯中的每一个具有芯基部和爪形磁极。场磁体被夹在第一转子铁心和第二转子铁芯之间，并使第一转子铁心和第二转子铁心的爪形磁极作为不同的磁极发挥作用。后表面磁体部分包括分别设置在第二转子芯和第一转子芯的爪形磁极的后表面上的第二和第一后表面磁体部分。第二后表面磁体部分的尺寸与第一背面磁体部分的尺寸不同。

8. 发明授权

US08841807B2 Rotary electric machine with improved magnetic resistance 有权
标题翻译：具有改善磁阻的旋转电机
公开(公告)号：US08841807B2
公开(公告)日：2014-09-23
申请号：US13114432
申请日：2011-05-24
申请人： Makoto Taniguchi
发明人： Makoto Taniguchi
IPC分类号： H02K1/16 , H02K21/16 , H02K1/27
CPC分类号： H02K21/16 , H02K1/2746 , H02K2213/03 , Y02B10/30
摘要： In a motor, an armature includes an annular yoke having an inner surface, and a plurality of teeth radially projecting individually from the inner surface of the annular yoke, and a rotor is rotatably provided inside the armature with a gap between the outer surface thereof and the inner surface of the armature. The armature and rotor is configured to have a first magnetic resistance facilitating reactive magnetic flux to flow through at least one tooth in a plurality of teeth to an adjacent tooth of the at least one tooth therein as compared with the reactive magnetic flux toward the rotor. The armature and rotor is configured to have a second magnetic resistance facilitating main magnetic flux based on the at least one pair of magnetic poles to flow toward a yoke of the armature as compared with the main magnetic flux toward at least one tooth close to the main magnetic flux.
摘要翻译：在电动机中，电枢包括具有内表面的环形轭和从环形轭的内表面分别径向突出的多个齿，转子可旋转地设置在电枢内部，在其外表面和电枢的内表面。电枢和转子被配置为具有第一磁阻，促使无功磁通量通过朝向转子的无功磁通量而流过多个齿中的至少一个齿到其至少一个齿的相邻齿。电枢和转子被配置为具有第二磁阻，该第二磁阻有助于基于至少一对磁极的主磁通量朝着朝向靠近主体的至少一个齿的主磁通量朝向电枢的磁轭流动磁通量。

9. 发明申请

US20140265706A1 HALF PERMANENT MAGNET MOTOR 有权
标题翻译：半永久磁铁电机
公开(公告)号：US20140265706A1
公开(公告)日：2014-09-18
申请号：US14287536
申请日：2014-05-27
申请人： Yoji YAMADA , Seiya YOKOYAMA , Shigemasa KATO , Yoshiaki TAKEMOTO , Yoko TATEISHI
发明人： Yoji YAMADA , Seiya YOKOYAMA , Shigemasa KATO , Yoshiaki TAKEMOTO , Yoko TATEISHI
IPC分类号： H02K1/24
CPC分类号： H02K1/24 , H02K1/2746 , H02K21/16 , H02K29/03 , H02K2213/03
摘要： A motor includes a rotor and a stator. The rotor includes a plurality of magnets, which function as first magnetic poles, and salient poles, which function as second magnetic poles. A ratio X1:X2 of a quantity X1 of magnetic pole portions of the rotor, which is the sum of the quantity of the magnets and the quantity of the salient poles, and the quantity X2 of slots is 2n:3n (n being a natural number). The sum of a magnetic pole occupying angle θ1 of the magnet and a magnetic pole occupying angle θ2 of the salient pole is 360°. The magnetic pole occupying angle θ1 is set in a range of 180°
摘要翻译：电动机包括转子和定子。转子包括用作第一磁极的多个磁体和用作第二磁极的凸极。转子的磁极部分的数量X1的比值X1：X2是磁体的数量与凸极的数量之和，槽的数量X2是2n：3n（n是自然的）数）。磁极占据角度和总和;磁体的1和磁极占据角度;突出极的2个为360°。磁极占据角度和角度; 1设置在180°

10. 发明授权

US08786161B2 Sensorless motor and pump having a consequent rotor 有权
标题翻译：无转子电动机和泵具有后续的转子
公开(公告)号：US08786161B2
公开(公告)日：2014-07-22
申请号：US13431784
申请日：2012-03-27
申请人： Yoshiaki Takemoto , Toshihiro Uchida , Seiya Yokoyama , Shigemasa Kato
发明人： Yoshiaki Takemoto , Toshihiro Uchida , Seiya Yokoyama , Shigemasa Kato
IPC分类号： H02K1/27 , H02K1/24
CPC分类号： H02K29/12 , H02K1/2746
摘要： A motor in which drive current supplied to a winding is controlled in accordance with a rotational position of a rotor detected from a waveform of an induced voltage between phases. The motor is provided with a stator including 3×n teeth and windings for three phases. A rotor includes a rotor core, an n number of magnets, and an n number of salient poles. The magnets function as one of the magnetic poles, the salient poles function as the other one of the magnetic poles. Each salient pole is spaced apart by a gap from the adjacent ones of the magnets in the circumferential direction. The magnets and gap are arranged inward in the radial direction from the rotor core. An electrical angle between two ends of each magnet is set to be smaller than an electrical angle between two ends of each salient pole.
摘要翻译：根据从相之间的感应电压的波形检测的转子的旋转位置来控制供给到绕组的驱动电流的电动机。电机设有一个定子，包括3×n个齿和三相绕组。转子包括转子铁芯，n个磁体和n个凸极。磁铁用作磁极之一，凸极用作另一个磁极。每个凸极在圆周方向上与相邻的磁体间隔开间隔开。磁体和间隙从转子芯向径向内侧布置。每个磁体的两端之间的电角设定为小于每个凸极的两端之间的电角度。

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