Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Hitachi, Ltd.

Other

Hodogaya Chemical Co., Ltd.

Canon Kabushiki Kaisha

Nippon Telegraph and Telephone Corporation

Mitsubishi Denki K.k.

Nec Corporation

Denso Corporation

Mitsubishi Heavy Industries Limited

The Furukawa Electric Co., Ltd.

Hitachi Hybrid Network Co., Ltd.

Tada Kunio

Shinji Nishimura

Masaya Inoue

Moriyuki Hazeyama

Toshiyuki Yoshizawa

Hiroyuki Akita

Masao Morita

Kanji Shinkawa

Yoshihito Asao

Kazunori Tanaka

Shogo Okamoto

Keiichi Komurasaki

Noriyuki Wada

Hitoshi Isoda

Shinsuke Kayano

Shinichi Ito

Yoshinobu Utsumi

Yoshiro Imazawa

Norihiro Murata

Hifumi Wada

Hisanobu Dobashi

Takeshi Mori

Yoshihiro Miyama

Atsushi Sakaue

Wakaki Miyaji

Ryuichi Shimomura

Hiroshi Kawada

Akira Hashimoto

Masashi Nakamura

Kenichi Tanaka

Akihiro Yamamura

Toru Miura

Haruyuki Kometani

Tatsuro Hino

Yoshihiro Harada

Nozomu Kamioka

Kazutoshi Kaneyuki

Tadashi Murakami

Katsuhiko Kusumoto

Junji Kitao

Kensaku Kuroki

Kiyoshi Takahashi

Ryuichi Kitora

Masahiro Takiguchi

Takuma Sasai

Tsunenobu Yamamoto

Tetsuya Nagata

Masahiko Fujita

Takeki Yazaki

Masatsugu Nakano

Shinya Sasaki

Takeshi Sugiyama

Yuji Tsushima

Shiro Iwatani

Toshiaki Kashihara

Akihiro Daikoku

Tomoaki Ishifuji

Kazuhisa Uomi

Yuji Nakahara

Hironori Tsuiki

Hideaki Arita

Katsuyuki Sumimoto

Kazuya Hasegawa

Masahiro Iezawa

Kazunori Shinoda

Shuzou Isozumi

Yuji Ogata

Koji Ishida

Hirohisa Sano

Yoshinori Miyamoto

Hiroaki Inoue

Takuya Ishikawa

Hidehiro Toyoda

Yoshimasa Nishijima

Tadashi Sato

Michitaka Okuno

Kimiaki Ando

Sachiko Kawasaki

Shinichi Okada

Kouichi Ojima

Yoshihiro Shinosaka

Hiroki Shiota

Tatsuo Nishimura

Hiroya Ikuta

Ryuji Kitamura

Kenro Sekine

Keiichi Ito

Shinkichi Sawa

Toshiyuki Oonishi

Ken Nishikawa

Yutaka Ikura

Manabu Yoshinori

Tomoya Tachibana

Tomohira Takahashi

Masahiko Kondow

Kunio Tada

Yoshikazu Ugai

Koji Nishizawa

Kazuyuki Iwamoto

Yasukazu Nishimura

Kimiyasu Furusawa

The rotary electric machine includes: a rotor core configured having electromagnetic steel sheets; a stator core having electromagnetic steel sheets; a magnet inserted in each of a plurality of through holes; and a magnetic end plate in contact with one or each of an end surface on one side in the axial direction of the rotor core and an end surface on another side in the axial direction of the rotor core, and having a single magnetic sheet or a plurality of magnetic sheets stacked in the axial direction, wherein heat generated from the magnetic end plate owing to eddy current that is generated in the magnetic end plate by magnetic flux from the stator core is equal to or lower than heat generated from the rotor core owing to eddy current that is generated in the rotor core by magnetic flux from the stator core.

Rotary electric machine

A rotation angle detection device for accurately detecting a rotation angle is obtained even when electromagnetic noise due to an electrical component(s) and the like of an electric automotive vehicle is superimposed on detection signals of the rotation angle detection device. The device includes a multi-phase/two-phase transformation unit for converting a plurality of detection signals, each being outputted from rotation detectors in accordance with a rotation angle of a rotating body so as to output transformed signals as two-phase signals; an addition-subtraction calculation unit for generating addition-subtraction signals by mutually performing addition to the two-phase signals and subtraction therefrom; an amplitude correction unit for modifying amplitudes of the addition-subtraction signals in accordance with an amplitude correction value, and for outputting post-correction addition-subtraction signals; and an angle calculation unit for calculating an angle based on the post-correction addition-subtraction signals, and for outputting an angular signal.

Rotation angle detection device having increased accuracy

In a rotary electric machine, slots are formed between teeth of a stator core. A ratio of a number of poles to a number of slots is 2:3. When an electrical angle of a tooth tip width, which is a width dimension of a tip of each of the teeth in a circumferential direction of the stator, is represented by &#x3b1;, an electrical angle of a pole arc angle, which is an angle formed by two straight lines that connect a rotation center of a rotor to corners on a rotor surface side of one permanent magnet, is represented by &#x3b2;, and a number of pole pairs is represented by P, the tooth tip width is within a range of (electrical angle)&#xb1;0.2&#xb0;&#xd7;P for a value that satisfies the following expression: &#x3b2;=&#x2212;2.5&#x3b1;+319.7 (0&#x3c;&#x3b2;&#x2264;180) [deg].

A rotation angle detection device including: a rotor; a stator including 'b' (b&#x2265;3) magnetic detection portions (MDPs) each including a bias magnetic field generation portion and a magnetic detection element (MDE); and a rotation angle processor calculating a rotation angle of the rotor based on a detection by the (MDEs). The rotor has convex and concave portions (CCPs), which change in 'x' cycles for a mechanical angle 360 (&#x201c;x&#x201d;&#x2265;1) to make the MDEs possible to obtain a sine wave. There are arranged &#x201c;b&#x201d; MDPs along a circumferential direction of the stator for each cycle of the CCPs, which are arranged at intervals of a mechanical angle 360&#xd7;(n&#xd7;b+m)/(x&#xd7;b), where &#x201c;n&#x201d; (n&#x2265;0) represents, by a number of cycles, a deviation amount of each of the MDPs from a reference position in the circumferential direction, and &#x201c;m&#x201d; (1&#x2264;m&#x2264;&#x201c;b&#x201d;) represents a position of a MDP in an arrangement order.

Rotation angle detection device and rotation angle detection method

A plurality of core blocks that are arranged into an annular shape are inserted into and fixed to a cylindrical frame, and are disposed inside the frame, a bolt passage member that is produced as a solid body and that has a bolt passage aperture that passes through in a longitudinal direction is fixed by welding to an outer circumferential surface of the frame such that the longitudinal direction thereof is oriented in the axial direction of the frame, and a stator is held on the housing by fastening a bolt that is passed through the bolt passage aperture into a fixing portion that is formed on the housing.

Rotary electric machine having bolt passage members

While lamination of steel sheets to be included in a stator core having a plurality of tooth portions is performed through swaging at yoke portions and through swaging at tooth portions, the stator core is formed in such a way as to include the tooth portion having a portion that is pressed into another steel sheet through swaging and the tooth portion having no portion that is pressed into another steel sheet through swaging.

Rotating electric machine including swaging portions for steel sheets of stator core

A contour line on the outer circumferential side of each magnet hole in the first layer is formed to be an arc passing through a total of three intersections, i.e., an intersection of a d axis and a reference magnetic flux line which is a magnetic flux line as a reference positioned inward by a predetermined number of magnetic flux lines from the outer circumferential edge of a rotor core, and intersections of: the reference magnetic flux line; and sides at the circumferential ends of the magnet hole which are positioned inward by a bridge dimension from the outer circumferential edge of the rotor core. Thus, a rotary electric machine that enables maximum utilization of reluctance torque and magnet torque and suppression of torque ripple can be obtained with simple processing and low cost.

A motor, which can reduce a shaft current by a cheap configuration and has a high reliability, is provided. A motor which is provided between an internal combustion engine and a transmission and installed in a housing for connecting the internal combustion engine and the transmission, in which a number of magnetic poles of a rotor is '10&#xd7;n' (n is a natural number), and a number of teeth of a stator is '12&#xd7;n' (n is a natural number); and a rotary shaft of the rotor, bearings for supporting the rotary shaft, and the housing are composed of electric conductors; and an electric conductor circuit, which includes the rotary shaft, the bearings, and the housing and is interlinked to the stator, is formed.

Motor

The present invention provides an idea to achieve a simulated experience device for video-game enabling a simulated experience for an operator to bodily feel a tactile sense corresponding to a video-game software and give a reaction by a force of the operator. By combining a doll play using a figurine, a tool and a mechanical device for creating the tactile sense corresponding to the content of the video-game and a sensory video-game operated by using human body, the tactile sense corresponding to the content of the video-game is created, the created tactile sense is felt by the operator, a reaction is given to the tactile sense felt by the operator while adjusting a force of the operator. Thus, a load is generated and the generated load is quantified as X, converting X into a button operation of a remote controller for the video-game. Accordingly, a simulated experience device for enabling the simulated experience of the tactile sense of the video-game is achieved.

Simulated experience device for video-game

A rotor core is configured by arranging divided rotor cores coaxially so as to be in close contact with each other such that magnetic pole centers are aligned axially, auxiliary grooves are recessed into respective outer circumferential surfaces of the divided rotor cores between respective magnetic poles so as to have plane symmetry relative to a plane that includes a center position between the magnetic poles and a central axis of the divided rotor cores, and so as to extend from a first axial end to a second axial end of the divided rotor cores, the auxiliary grooves recessed into an outer circumferential surface of an identical divided rotor core have an identical groove shape, and groove widths of the auxiliary grooves are set such that predetermined orders of harmonic components of cogging torque that result from each of the divided rotor cores mutually cancel each other out.

Embedded permanent magnet electric motor

A side surface at the outside of a plurality of teeth portions of one separated core is faced to a side surface of teeth portions of an adjacent separated core, so as to form a second slot which is straddled between the adjacent separated cores, and a first slot is formed by a plurality of teeth portions of one separated core, and a width size of the first slot is identical to a width size of the second slot, and coil conductor storage space is formed in the first slot via a first insulating component, and coil conductor storage space is formed in the second slot via a second insulating component, and a thickness size of the first insulating component is different from a thickness size of the second insulating component.

Stator of rotary electric machine and rotary electric machine

A magnet temperature estimation device includes: a voltage detector () for detecting a voltage at a time when a winding is energized; a high-order component detector () for detecting a high-order component of the voltage; a reference database () for storing in advance, as a table, a correspondence relationship between the high-order component and two or more parameters, which include a magnet temperature and another one or more parameters, as parameters affecting the voltage from which the high-order component is detected; a parameter value detector () for detecting a value of the another one or more parameters; and a magnet temperature estimator () for estimating a magnet temperature corresponding to the high-order component detected by the high-order component detector based on the another one or more parameters detected by the parameter value detector and the table stored in the reference database.

Magnet temperature estimation device for permanent magnet motor and magnet temperature estimation method for permanent magnet motor

Permanent magnets that constitute the single magnetic poles are constituted by n permanent magnet segments, the n permanent magnet segments being configured such that shapes and directions of orientation thereof have mirror symmetry relative to a plane that passes through a magnetic pole center and that includes a central axis of the rotor core, and being oriented such that a permanent magnet segment that is further away from the magnetic pole center in a circumferential direction has a smaller angle of orientation, and the permanent magnet segment that is positioned further away from the magnetic pole center in the circumferential direction being produced so as to have an approximately fan-shaped cross-sectional shape in which a radial width is wider than a circumferential width.

Embedded permanent magnet rotary electric machine

A method for manufacturing a stator for a rotary electric machine, capable of reducing a space on an end surface of a stator core on an inner diameter side to reduce a size in an axial direction to realize a compact size by maintaining an insulating distance corresponding to a potential difference. In the stator for the rotary electric machine a coil portion includes a coil main-body portion () and a second connecting wire (). The second connecting wire () includes a first bent portion () and a second connecting-wire end portion (A). The second connecting wire () is configured so that a differential value of a length z in the axial direction of the stator to a length r in the radial direction of the stator is &#x394;z/&#x394;r&#x3e;0.

Method for manufacturing stator for rotary electric machine

Permanent magnets that form individual magnetic poles are configured by arranging three magnet blocks to be spaced apart from each other circumferentially, the three magnet blocks are each formed such that cross-sectional shapes that are perpendicular to a central axis of a rotor core are radially outwardly convex, and circumferential widths are narrower in magnet blocks that are further away from a magnetic pole center, and the three magnet blocks that are arranged circumferentially are formed to have mirror symmetry relative to a plane that passes through the magnetic pole center and the central axis of the rotor core.

Growing community of inventors

Tokyo, Japan

Shinji Nishimura