公开(公告)号：US20130300242A1

公开(公告)日：2013-11-14

申请号：US13805618

申请日：2011-11-18

申请人： Yoji Yamada ,  Chie Morita ,  Yuuki Fujii ,  Shigemasa Kato

发明人： Yoji Yamada ,  Chie Morita ,  Yuuki Fujii ,  Shigemasa Kato

IPC分类号： H02K1/27

CPC分类号： H02K1/27 ,  H02K1/22 ,  H02K1/2713 ,  H02K1/272 ,  H02K1/2766 ,  H02K1/2773 ,  H02K21/044

摘要： A rotor with a first rotor core, a second rotor core, a field magnet, and an interpole magnet is provided. The first rotor core has a first core base and a plurality of first nail-shaped magnetic pole parts that extend in the axis direction from the outer circumference section of the first core base. The second rotor core has a second core base and a plurality of second nail-shaped magnetic pole parts that extend in the axis direction from the outer circumference section of the second core base. The field magnet is magnetized along the axis direction and makes the first nail-shaped magnetic parts function as first magnetic poles and the second nail-shaped magnetic parts function as second magnetic poles. The interpole magnet is arranged between the first nail-shaped magnetic parts and the second nail-shaped magnetic parts. The interpole magnet has the same polarity as the first and second nail-shaped magnetic pole parts, in the sections where same face the first and second nail-shaped magnetic pole parts.

摘要翻译： 提供了具有第一转子铁心，第二转子铁芯，磁场磁体和极间磁铁的转子。 第一转子铁芯具有从第一铁心基体的外周部沿轴向延伸的第一铁心基体和多个第一钉状磁极部。 第二转子铁芯具有从第二铁心基体的外周部沿轴向延伸的第二铁心基体和多个第二钉状磁极部。 场磁体沿着轴线方向被磁化，使得第一指甲形磁性部件作为第一磁极起作用，第二指甲形磁性部件用作第二磁极。 极间磁铁配置在第一指甲状磁性部和第二指甲状磁性部之间。 在与第一和第二钉状磁极部相同的部分中，极间磁铁具有与第一和第二钉状磁极部相同的极性。

公开(公告)号：US09502929B2

公开(公告)日：2016-11-22

申请号：US13805618

申请日：2011-11-18

申请人： Yoji Yamada ,  Chie Morita ,  Yuuki Fujii ,  Shigemasa Kato

发明人： Yoji Yamada ,  Chie Morita ,  Yuuki Fujii ,  Shigemasa Kato

IPC分类号： H02K1/27 ,  H02K1/22 ,  H02K21/04

CPC分类号： H02K1/27 ,  H02K1/22 ,  H02K1/2713 ,  H02K1/272 ,  H02K1/2766 ,  H02K1/2773 ,  H02K21/044

摘要： A rotor with a first rotor core, a second rotor core, a field magnet, and an interpole magnet is provided. The first rotor core has a first core base and a plurality of first nail-shaped magnetic pole parts that extend in the axis direction from the outer circumference section of the first core base. The second rotor core has a second core base and a plurality of second nail-shaped magnetic pole parts that extend in the axis direction from the outer circumference section of the second core base. The field magnet is magnetized along the axis direction and makes the first nail-shaped magnetic parts function as first magnetic poles and the second nail-shaped magnetic parts function as second magnetic poles. The interpole magnet is arranged between the first nail-shaped magnetic parts and the second nail-shaped magnetic parts. The interpole magnet has the same polarity as the first and second nail-shaped magnetic pole parts, in the sections where same face the first and second nail-shaped magnetic pole parts.

摘要翻译： 提供具有第一转子铁心，第二转子铁芯，磁场磁体和极间磁铁的转子。 第一转子铁芯具有从第一铁心基体的外周部沿轴向延伸的第一铁心基体和多个第一钉状磁极部。 第二转子铁芯具有从第二铁心基体的外周部沿轴向延伸的第二铁心基体和多个第二钉状磁极部。 场磁体沿着轴线方向被磁化，使得第一指甲形磁性部件作为第一磁极起作用，第二指甲形磁性部件用作第二磁极。 极间磁铁配置在第一指甲状磁性部和第二指甲状磁性部之间。 在与第一和第二钉状磁极部相同的部分中，极间磁铁具有与第一和第二钉状磁极部相同的极性。

公开(公告)号：US08179011B2

公开(公告)日：2012-05-15

申请号：US12638567

申请日：2009-12-15

申请人： Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

发明人： Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

IPC分类号： H02K21/12

CPC分类号： H02K1/276 ,  H02K21/16 ,  H02K29/03

摘要： A brushless motor including a stator having teeth and a rotor having magnetic pole portions is disclosed. The magnetic pole portions are arranged to have the same polarities as each other. The rotor includes gaps that function as magnetic resistance at circumferential ends of each of the magnetic pole portions so that an iron core portion is formed between the circumferentially adjacent magnetic pole portions. Magnetic flux of the magnetic pole portions passes through the iron core portion along the radial direction. The gaps include a first gap located on the leading end of the magnetic pole portion in the rotation direction of the rotor and a second gap located on the trailing end of the magnetic pole portion in the rotation direction of the rotor. The circumferential width of the first gap is set to be greater than the circumferential width of the second gap.

公开(公告)号：US20120001509A1

公开(公告)日：2012-01-05

申请号：US13168636

申请日：2011-06-24

申请人： Yoji Yamada ,  Seiya Yokoyama ,  Keisuke Koide ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Toshihiro Uchida

发明人： Yoji Yamada ,  Seiya Yokoyama ,  Keisuke Koide ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Toshihiro Uchida

IPC分类号： H02K21/14

CPC分类号： H02K1/24 ,  H02K1/274 ,  H02K1/2746 ,  H02K1/278 ,  H02K2213/03

摘要： A motor including a stator and a rotor. The stator includes teeth and windings. Each tooth has a distal portion defined by a radially inward side of the stator. The rotor, which is arranged inward in the radial direction from the stator, includes a rotor core, magnets, and salient poles. Each salient pole is separated by a void from the magnet that is adjacent in the circumferential direction. The distal portion of each tooth is longer than a radially outward side of each magnet.

摘要翻译： 一种包括定子和转子的电动机。 定子包括齿和绕组。 每个齿具有由定子的径向内侧限定的远侧部分。 从定子向径向内侧配置的转子包括转子铁心，磁铁和凸极。 每个凸极由与圆周方向相邻的磁体的空隙分开。 每个齿的远端部分比每个磁体的径向外侧长。

公开(公告)号：US08502430B2

公开(公告)日：2013-08-06

申请号：US13237390

申请日：2011-09-20

申请人： Yoji Yamada ,  Shigemasa Kato

发明人： Yoji Yamada ,  Shigemasa Kato

IPC分类号： H02K1/27

CPC分类号： H02K1/2746

摘要： A rotor comprises a rotor core, a plurality of magnetic poles arranged in a circumferential direction of the rotor core, a plurality of salient poles and a plurality of auxiliary magnets each of which is disposed between the magnetic pole and the salient pole is provided. Each magnet pole has a field magnet pole that serves as a first magnetic pole, wherein the field magnet is a main magnet. Each salient pole is integrally formed with the rotor core between the two adjacent magnetic poles. Each salient pole serves as a second magnetic pole. The pole of the second magnetic pole is opposite from that of the first magnetic pole. The auxiliary magnet generates magnetic flux in a circumferential direction of the rotor core so that the magnetic pole and an opposing pole of the auxiliary magnet have the same polarity and the salient pole and another opposing pole of the auxiliary magnet have the same polarity.

摘要翻译： 转子包括转子芯，设置在转子芯的圆周方向上的多个磁极，多个凸极和多个辅助磁体，每个辅助磁体设置在磁极和凸极之间。 每个磁极具有用作第一磁极的磁场磁极，其中磁场磁体是主磁体。 每个凸极与两个相邻磁极之间的转子芯一体形成。 每个凸极用作第二磁极。 第二磁极的极与第一磁极的极相反。 辅助磁体在转子铁芯的圆周方向上产生磁通，使得磁极和辅助磁铁的相对极具有相同的极性，并且辅助磁体的凸极和另一相对极具有相同的极性。

公开(公告)号：US08405342B2

公开(公告)日：2013-03-26

申请号：US12893071

申请日：2010-09-29

申请人： Yoji Yamada ,  Shinji Santo ,  Seiya Yokoyama ,  Yoko Tateishi ,  Yoshiaki Takemoto ,  Shigemasa Kato

发明人： Yoji Yamada ,  Shinji Santo ,  Seiya Yokoyama ,  Yoko Tateishi ,  Yoshiaki Takemoto ,  Shigemasa Kato

IPC分类号： H02P1/46

CPC分类号： H02K1/2746 ,  H02K29/03 ,  H02K2213/03 ,  H02P6/10 ,  H02P25/024

摘要： A motor including a stator, a rotor, and a current supply unit. The stator includes a stator core, which has a plurality of teeth, and a plurality of coils, which are wound around the teeth. The rotor includes a plurality of magnets, which function as first magnetic poles, and salient poles, which function as second magnetic poles. Each of the salient poles is arranged between adjacent magnets spaced apart by a clearance from the magnets. When P represents the number of poles in the rotor and S represents the number of coils, a ratio P/S of the pole number P and the coil number S is represented by (4n−2)/3m (where n and m are integers that are greater than or equal to 2). The plurality of coils includes a plurality of coil groups including coils for three phases. The current supply unit executes a different current control for each coil groups.

摘要翻译： 一种包括定子，转子和电流供应单元的电动机。 定子包括具有多个齿的定子芯和缠绕在齿上的多个线圈。 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。 每个凸极设置在与磁体间隔开的相邻磁体之间。 当P表示转子中的极数，S表示线圈数时，极数P和线圈数S的比P / S由（4n-2）/ 3m（其中n和m是整数）表示 大于或等于2）。 多个线圈包括多个线圈组，包括用于三相的线圈。 电流供应单元对每个线圈组执行不同的电流控制。

公开(公告)号：US08242654B2

公开(公告)日：2012-08-14

申请号：US12779580

申请日：2010-05-13

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： H02K1/27 ,  H02K1/24

CPC分类号： H02K1/2746 ,  H02K29/03

摘要： A motor is disclosed that includes a rotor having a consequent-pole structure. The rotor core of the rotor includes a magnetic flux dividing portion at each position that faces one of the magnets. Each magnetic flux dividing portion forcibly divides magnetic flux in the vicinity of the backside of the corresponding magnet to both sides in the circumferential direction.

摘要翻译： 公开了一种电动机，其包括具有后续极结构的转子。 转子的转子铁心包括在面对磁体之一的每个位置处的磁通量分配部。 每个磁通量分割部分将相应磁铁的背面附近的磁通强制分割成圆周方向的两侧。

公开(公告)号：US20120175987A1

公开(公告)日：2012-07-12

申请号：US13409194

申请日：2012-03-01

申请人： YOSHIAKI TAKEMOTO ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

发明人： YOSHIAKI TAKEMOTO ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato

IPC分类号： H02K1/28

CPC分类号： H02K1/276 ,  H02K21/16 ,  H02K29/03

摘要： A brushless motor including a stator having teeth and a rotor having magnetic pole portions is disclosed. The magnetic pole portions are arranged to have the same polarities as each other. The rotor includes gaps that function as magnetic resistance at circumferential ends of each of the magnetic pole portions so that an iron core portion is formed between the circumferentially adjacent magnetic pole portions. Magnetic flux of the magnetic pole portions passes through the iron core portion along the radial direction. The gaps include a first gap located on the leading end of the magnetic pole portion in the rotation direction of the rotor and a second gap located on the trailing end of the magnetic pole portion in the rotation direction of the rotor. The circumferential width of the first gap is set to be greater than the circumferential width of the second gap.

摘要翻译： 公开了一种包括具有齿的定子的无刷电动机和具有磁极部分的转子。 磁极部分被设置为具有彼此相同的极性。 转子包括在每个磁极部分的周向端部处起到磁阻作用的间隙，使得在周向相邻的磁极部分之间形成铁芯部分。 磁极部分的磁通量沿径向方向穿过铁芯部分。 间隙包括位于转子的旋转方向上的磁极部的前端的第一间隙和位于转子的旋转方向上的磁极部的后端的第二间隙。 第一间隙的周向宽度被设定为大于第二间隙的周向宽度。

公开(公告)号：US08084911B2

公开(公告)日：2011-12-27

申请号：US12580118

申请日：2009-10-15

申请人： Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato ,  Yoko Tateishi

发明人： Yoshiaki Takemoto ,  Seiya Yokoyama ,  Yoji Yamada ,  Shigemasa Kato ,  Yoko Tateishi

IPC分类号： H02K1/22

CPC分类号： H02K1/278 ,  H02K29/03 ,  H02K2201/06

摘要： A motor including a stator and a rotor is disclosed. The rotor includes a first unit and a second unit. The first unit includes an N-pole first magnet and an S-pole second magnet. The first and the second magnets are alternately arranged along a circumferential direction of the rotor at equal angular intervals to form magnetic pole portions. The second unit includes an N-pole or S-pole third magnet and a salient pole arranged in the rotor core. The salient pole functions as a magnetic pole that differs from the third magnet. The third magnet and the salient pole are alternately arranged along the circumferential direction of the rotor to form magnetic pole portions. The number of magnetic pole portions of the second unit is the same as the number of magnetic pole portions of the first unit. The third magnet and the magnet of the first unit having the same pole as the third magnet are aligned in the axial direction of the rotor.

摘要翻译： 公开了一种包括定子和转子的电动机。 转子包括第一单元和第二单元。 第一单元包括N极第一磁体和S极第二磁体。 第一和第二磁体以等角度间隔沿着转子的圆周方向交替布置以形成磁极部。 第二单元包括设置在转子芯中的N极或S极第三磁体和凸极。 凸极用作与第三磁体不同的磁极。 第三磁体和凸极沿转子的圆周方向交替布置以形成磁极部分。 第二单元的磁极部的数量与第一单元的磁极部的数量相同。 具有与第三磁体相同的极的第一单元的第三磁体和磁体在转子的轴向上对准。

公开(公告)号：US08653771B2

公开(公告)日：2014-02-18

申请号：US13028990

申请日：2011-02-16

申请人： Shinji Santo ,  Seiya Yokoyama ,  Yoji Yamada ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Kenta Goto

发明人： Shinji Santo ,  Seiya Yokoyama ,  Yoji Yamada ,  Yoshiaki Takemoto ,  Shigemasa Kato ,  Kenta Goto

IPC分类号： H02P6/10

CPC分类号： H02P21/05

摘要： A controller for use with a motor including a stator, around which three-phase coils are wound, and a rotor, which includes a magnet functioning as a first magnetic pole and a salient pole of a core functioning as a second magnetic pole. The controller supplies the three-phase coils with excitation currents having a predetermined phase difference from one another to drive and rotate the rotor. The controller includes a current adjustment unit that adjusts a fundamental wave current using high-order currents for third order and ninth order components in a q-axis to reduce torque ripple. The excitation current is generated based on the fundamental wave current adjusted by the current adjustment unit.

摘要翻译： 一种与电动机一起使用的控制器，其包括缠绕有三相线圈的定子和包括用作第一磁极的磁体和用作第二磁极的芯的凸极的转子。 控制器为三相线圈提供彼此具有预定相位差的励磁电流，以驱动和旋转转子。 该控制器包括电流调节单元，该电流调节单元使用q阶中的三阶和九阶分量的高次电流调节基波电流以减小转矩波动。 基于由电流调节单元调整的基波电流产生励磁电流。