Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Kabushiki Kaisha Kobe Seiko Sho (kobe Steel, Ltd.)

Fujitsu Ten Limited

Japan Superconductor Technology Inc.

Kobelco Research Institute, Inc.

Kenichi Inoue

Koji Inoue

Hisashi Mitamura

Kazuto Okada

Hiroyuki Mitani

Yoshihiro Yokota

Nobuyuki Kawakami

Kazushi Hayashi

Hiroyuki Takamatsu

Hideo Fujii

Takashi Kinoshita

Toshihiro Kugimiya

Koji Kobashi

Shigeto Adachi

Kyoji Zaitsu

Hiroshi Hashimoto

Takashi Hase

Hirohiko Fukumoto

Yasushi Tani

Takayuki Hirano

Takashi Hiekata

Tetsuya Ogawa

Katsura Kajihara

Hiroaki Kawai

Hiroshi Gotoh

Satoru Takada

Takeshi Tachibana

Takehiro Tsuchida

Koichi Makii

Hirofumi Hojo

Masamichi Chiba

Takashi Kobori

Osamu Ozaki

Chikara Ichihara

Kohei Suzuki

Eiichiro Yoshikawa

Yoshito Fukumoto

Naoya Fujiwara

Katsuhiro Uehara

Norio Suzuki

Tsutomu Morimoto

Akira Tsutsui

Toshiyuki Tanaka

Satoshi Ito

Takayoshi Miyazaki

Kiyotaka Ishibashi

Masakatsu Maruyama

Hideaki Kuwabara

Hirofumi Fukuyama

Hiroyuki Komaki

Shingo Kasai

Kazunori Kobayashi

Yukito Furukawa

Toshihiro Nogi

Yasushi Maeda

Hidenori Akiyama

Akira Kobayashi

Yutaka Ito

Akashi Yamaguchi

Kazuhiko Asahara

Tatuya Noguchi

Kazushi Yokoyama

Masashi Hamaguchi

Kazuhide Sekiyama

Kingo Kuritani

Kazuyoshi Saitou

Tsutomu Kondou

Tsutomu Mirimoto

Nobuyoshi Takagi

This DC brushless motor () is provided with a stator () that has exciting coils () and a rotor () that is positioned coaxially to the stator (). The stator () has a quasi-E-shaped cross-section in the axial direction at the radius part; a plurality of protrusions () serving as magnetic poles are formed on the respective 3 parallel sections () of the E in the same number in the circumferential direction; and of the magnetic poles () formed at the 3 parallel sections () of the E, the top and the bottom magnetic poles () are respectively positioned so as to be shifted in the opposite directions in the circumferential direction with respect to the center line of the middle magnetic pole (). Changes in the magnetic resistance between the stator () and the rotor (), which are caused by the flow of a magnetic flux generated around the exciting coils (), are utilized as a driving force. The DC brushless motor () configured in said manner exhibits excellent space efficiency at low cost and is less affected by temperature changes.

DC brushless motor and method for controlling the same

In the outer rotor-type axial gap brushless motor of the present invention, each of a plurality of coils provided to a stator is constituted by winding a band-shaped conductor member via an insulating member such that the width direction of the conductor member runs along the axial direction of the coil, and each coil has a through passage which penetrates in the axial direction of the coil and which is included between prescribed turns in a portion of the coil that corresponds to the outer side in the radial direction of the stator relative to a core portion of the coil.

Outer rotor-type axial gap brushless motor

Liquefier includes first compression section which is driven by a superconducting motor and which compresses a substance in a gaseous state. Cooling circuit includes: second compression section which is driven by the motor when first compression section is being driven by the motor and which compresses a refrigerant; first heat exchange section which cools the refrigerant by causing heat exchange between a substance in a tank and the compressed refrigerant; second expansion section which brings the refrigerant down to or below a critical temperature of a superconducting material by expanding the cooled refrigerant; and second heat exchange section which imparts cold heat of the refrigerant to the substance by causing heat exchange between the substance in the tank and the refrigerant after cooling a superconducting magnet, and supplies the refrigerant brought down to or below the critical temperature by second expansion section to the motor and cools the superconducting magnet.

Liquefaction system and power generation system

Provided is a so-called Lundell-type generator capable of avoiding generation of eddy current in rotor iron-cores without complicated structure. The generator includes a stator, a rotary shaft, first and second rotor iron-cores, and a rotor coil. Each rotor iron-core includes a base and rotor magnetic-pole portions extending axially from the base, the rotor coil disposed on the inside thereof. Each rotor iron-core is formed of a plurality of unit plates stacked axially. The unit plates integrally include respective basal plate portions stacked to form the bases and a plurality of magnetic-pole plate portions stacked to form the rotor magnetic-pole plate portions stacked to form the rotor magnetic-pole portions.

Generator

An aluminum alloy comprising more than 3.5% and up to 6.0% of Mg, 0.02 to 1.0% inclusive of Cu, 0.02 to 0.1% inclusive of Cr, and a remainder made up by Al and unavoidable impurities, wherein the contents of Si and Fe in the unavoidable impurities are limited to 0.05% or less and 0.05% or less, respectively, and wherein the number of intermetallic compound particles contained in the aluminum alloy and having a maximum length of 4 &#x3bc;m or more is 50 particles or less per 1 mmof an arbitrary cross-sectional area of the aluminum alloy. An aluminum alloy is provided, which has excellent anodic-oxidation-treatability and can be used for providing an anodic-oxidation-treated aluminum alloy member having high withstand voltage properties and such excellent heat resistance that the occurrence of cracking under high temperatures conditions can be prevented.

Aluminum alloy having excellent anodic oxidation treatability, and anodic-oxidation-treated aluminum alloy member

A bus bar () comprises: a laminated conductive wire () formed by arranging side by side in the longitudinal direction a first plate-shaped conductive wire () formed by spirally winding stripe conductors () mutually adjacent in the width direction while bringing the opposing inner surfaces closer to each other, and a second plate-shaped conductive wire () formed by spirally winding the stripe conductors () in the direction opposite the direction of the first conductive wire () while bringing the opposing inner surfaces closer to each other, and overlapping these wires () so that the outer surfaces in the width direction face each other; and terminals () joined to the first conductive wire () and the second conductive wire () at both ends of the laminated conductive wire ().

Bus bar, bus bar module, and method of manufacturing bus bar

A motor drive device and motor drive system according to the present invention comprise: a power source terminal; a charging and discharging unit connected in series with the power source terminal; connection terminals to be connected to each of primary and secondary excitation coils for an anti-symmetric two phase motor; and a drive control unit which has a plurality of switching elements and respectively forms first and second paths by turning these switching elements on and off. The first path is used for independently supplying power to the respective primary and secondary excitation coils from the power source terminal via the connection terminals, and the second path is used for independent regeneration of each residual energy remaining in the primary and secondary excitation coils from the respective primary and secondary excitation coils into the charging and discharging unit via the connection terminals.

Motor drive device and motor drive system

This heat sink has bonded on one surface a member to be bonded, and has a cooling member in contact with the other surface. The heat sink is provided with a metal plate having a thermal expansion coefficient larger than that of the member to be bonded, and the metal plate is provided with a center portion where the member to be bonded is bonded, and a plurality of linear peripheral slits formed in a whirl-like radial manner such that the linear peripheral slits surround the center portion.

Heat sink and method for manufacturing heat sink

A core member () of the disclosed reactor (Da) comprises a magnetic wire material and is arranged outside a plurality of coils (). As the core member () in the reactor (Da) having this structure is a wire material and is arranged outside the plurality of coils (), the core member () can be formed by the winding of the wire material, simplifying manufacturing.

Reactor

Provided are a multi-phase transformer having an easier-producible structure, and a transformation system wherein a plurality of such transformers are serially connected. Disclosed is a three-phase transformer (Tra) provided with three coils () and a pair of magnetic members () respectively provided on opposite ends in the axial direction of the coils (), wherein the coils () are respectively provided with first and second sub-coils ().

Multi-phase transformer and transformation system

The invention is characterized in: forming a magnetic field inside a flow channel tube, the tube wall of which is formed from a material that is nonmagnetic and which, when the pressure outside the flow channel tube is lower than the pressure inside the flow channel tube, passes a portion of the air flowing inside the tube through the tube wall and discharges same to the outside thereof; supplying air to the flow channel tube so that at least a region of laminar flow is formed inside the flow channel tube; and reducing the pressure outside the flow channel tube to a prescribed pressure.

Oxygen-enriched air producing device and oxygen-enriched air producing method

Disclosed is a brushless motor (A) which is an axial gap type brushless motor (A) wherein stators (A,A) comprising a coil () and a rotor () comprising a permanent magnet () are arranged with a gap therebetween in the axial direction. The coil () is a band-like wire which is spirally wound such that the width direction of the band-like wire generally coincides with the direction of the magnetic flux that is generated by the permanent magnet () of the rotor (). Consequently, the axial gap type brushless motor (A) having the above-described structure can be further reduced in eddy current loss in comparison to conventional brushless motors.

Axial gap type brushless motor

Provided is a reactor that enables high inductance to be generated with stability in a wide current range, while minimizing noise, processing cost, and eddy-current loss. The reactor (D) has the ratio (t/W) of the width (W) to the thickness (t) of a conductive member that composes an air-core coil configured to be 1 or less, and preferably, 1/10 or less. Furthermore, the reactor also has the absolute value of a value ((L&#x2212;L)/L) that has had: the difference (L&#x2212;L) between; the space interval (L) between an inner wall face of a first core member () and an inner wall face of a second core member (), at the innermost circumference position of the air-core coil (); and the space (L) between the inner wall face of the first core member () and the inner wall face of the second core member (), at the outermost circumference position of the air-core coil (); divided by an average value (L); configured to be 1/50 or less. The ratio (R/W) of the radius (R), from the axis-center (O) of the air-core coil () to the outer circumference of the air-core coil (), to the width (W) of the air-core coil () (conductive member), is 2=R/W=4.

A rotor having a cylindrical peripheral surface is disposed in a treatment vessel into which a carrier gas is introduced, and the rotor peripheral surface is opposed to the surface of a substrate with a predetermine gap therebetween. Film-forming particulates including atomic molecules of the film-forming material and cluster particulates thereof are scattered from the surface of the film-forming material supplying member by sputtering, and the rotor is rotated to form a carrier gas flow near the rotor peripheral surface. The film-forming particulates are transported to the vicinity of the surface of the substrate by the carrier gas flow and adhered to the surface of the substrate. As a result, the adverse effect of high-energy particles and the like is suppressed to efficiently form a satisfactory thin film by an evaporation or sputtering process, which has less restriction to a source material gas, without the need for large equipment.

Method and apparatus for forming thin film

To achieve an air bag system in which a safing determination processing circuit can be implemented on one integrated circuit, the air bag system, which is equipped with first and second sensors () for detecting a vehicle crash, and which outputs a signal for expanding an air bag when it is determined that a vehicle crash has occurred based on the outputs of the first and second sensors, comprises: a processing unit () for processing an output signal of the first sensor () by software; and a processing circuit () for processing an output signal of the second sensor () by hardware, wherein the processing unit () includes a non-activation fault diagnosis section () which, based on the output signal of the second sensor (), detects a failure that can lead to non-activation of the air bag, and the processing circuit () includes an erroneous-activation fault diagnosis section () which, based on the output signal of the second sensor (), detects a failure that can lead to erroneous activation of the air bag.

Air bag system

Growing community of inventors

Kobe, Japan

Kenichi Inoue