Mitsubishi Electric Corporation

Kao Corporation

Hitachi, Ltd.

Tokyo Stock Exchange, Inc.

Yuki Hidaka

Taiga Komatsu

Hideaki Arita

Shohei Fujikura

Yasuhiro Suzuki

Hiroyuki Higashino

Atsushi Suzuki

Moriyuki Hazeyama

Akihiro Daikoku

Toshiyuki Yoshizawa

Tatsuro Hino

Ichiro Sakamoto

Takehiro Tsutsumi

Naohide Maeda

Tadashi Murakami

Kazuo Ohashi

Keiji Yoshii

Takeshi Oka

Yoshihide Sato

Ryuichi Noki

Takashi Higashi

Tsuyoshi Tsukada

Kazuhiko Omata

Kyouko Tagami

Shinobu Sakamoto

A stator includes: a stator core including an annular yoke portion and a plurality of tooth portions formed on an inner side in a radial direction of the yoke portion so as to be arranged at predetermined intervals in a circumferential direction and protrude toward the inner side in the radial direction; and a winding arranged in slots formed between the tooth portions. The stator includes cooling tubes made of a nonconductive material, extending in an axial direction of the stator, and serving as flow paths for a coolant. The cooling tube has a constant outer shape along the axial direction and has a thickness that changes along the axial direction.

Stator and dynamo-electric machine

An object is to improve estimation accuracy of the internal distribution state of a rotating electric machine. The rotating electric machine includes a stator; a rotor rotatably provided on a radially inner side of the stator; a shaft provided as a rotary shaft of the rotor; a bracket supporting the shaft rotatably relative to the stator via a bearing; and a sensor provided to the shaft between the rotor and the bearing.

Rotating electric machine system having a control circuit that estimates an internal state

A rotating electric machine includes a stator and a rotor. The rotor includes a rotor core, an axial end part, and a rotor magnet inserted into an insertion hole formed so as to pass through the rotor core. The axial end part has a recessed portion. The rotor magnet includes a first side surface and a second side surface. The first side surface is fixed to a first inner wall surface of the insertion hole. In a cross section perpendicular to the axial direction, a width of the first inner wall surface is larger than a width of the first side surface. The second side surface is fixed to a second inner wall surface of the recessed portion. In the cross section perpendicular to the axial direction, a width of the second inner wall surface is larger than a width of the second side surface.

Rotating electric machine

A control device that can prevent the deterioration of temperature estimation accuracy in a rotating electric machine due to its aging deterioration is provided. The control device () includes a correction unit () to correct at least one of thermal resistance, heat generation, and thermal capacity, which are physical quantities to build a thermal circuit model (-) covering a thermal circuit of a rotating electric machine (), wherein the correction unit () corrects at least one of the thermal resistance, the heat generation, and the thermal capacity at a measurement position by using measurement information including temperature (T) or thermal flow (U) measured by a sensing unit () at the measurement position in the rotating electric machine ().

Control device and control system

This motor device includes: a motor having components including a stator and a rotor; and a controlling circuitry to control the motor. The motor is provided with temperature sensors to detect a heat transfer amount and a transfer direction about the components. The controlling circuitry includes a temperature calculator to calculate a component temperature based on a thermal circuit network from thermal resistances and heat capacities given for the components. On the basis of actual measured values of the heat transfer amount and the transfer direction obtained by the temperature sensors, the temperature calculator corrects thermal resistances and heat capacities about the components obtained on the basis of the thermal circuit network, and estimates the temperature of each component during driving of the motor.

Motor device

Provided is a rotor for a rotating electric machine, which enables suppression of a reduction in output of a rotating electric machine. The rotor for a rotating electric machine includes: a rotor core having winding-portion insertion holes and magnet insertion holes; rotor winding portions inserted into the winding-portion insertion holes; and rotor permanent magnets inserted into the magnet insertion holes, wherein each of the rotor winding portions includes: a non-magnet portion; and a rotor winding provided to the non-magnet portion, wherein each of the non-magnet portions is fixed to the rotor core, and wherein the rotor windings are fixed to the rotor core through intermediation of the non-magnet portions.

Rotor for rotating electric machine

In order to obtain an electric rotating machine which can improve rotating machine efficiency by suppressing a harmonic component of rotor magnetomotive force and reducing harmonic core loss, a permanent magnet is furnished in some of inter-magnetic pole portions, the inter-magnetic pole portion being formed between a first claw-shaped magnetic pole portion and a second claw-shaped magnetic pole portion; the shapes of a first chamfered portion and a second chamfered portion, which are provided in the inter-magnetic pole portion where the permanent magnet is inserted, differ from those of a first chamfered portion and a second chamfered portion, which are provided in an inter-magnetic pole portion where the permanent magnet is not inserted; and/or the shapes of a first magnetic flux adjusting portion and a second magnetic flux adjusting portion, which are provided in the inter-magnetic pole portion where the permanent magnet is inserted, differ from those of a first magnetic flux adjusting portion and a second magnetic flux adjusting portion, which are provided in the inter-magnetic pole portion where the permanent magnet is not inserted.

Electric rotating machine

Provided is a pole-number-changing rotary electric machine having excellent torque-current characteristics both at a more-pole drive time and at a less-pole drive time without use of a winding changing mechanism. The pole-number-changing rotary electric machine is configured to change a number of poles between the more-pole drive time and the less-pole drive time, and includes: a rotary electric machine including: a stator including stator slots arranged in a mechanical angle direction; and a rotor configured to be rotated by magnetomotive forces generated by currents flowing through stator coils stored in the stator slots; an inverter configured to supply an m-phase current to the stator coils; and a control unit configured to control the inverter, the per-stator-slot magnetomotive forces being arranged at regular angle intervals.

Pole-number-changing rotary electric machine and driving method of pole-number-changing rotary electric machine

A securities trading systemwhich is an example of an financial products trading system includes: a switchincluding a processorwhich checks order issue information included in each of order messages received from a participant terminalagainst a server management table, determines the address of a trading serverto which the order message is to be sorted, delivers the order message, receives a notification of a result of a predetermined process for the delivered order message from the trading server, and sends the notification to the participant terminal; and the trading serverincluding a processorwhich performs a predetermined error check on each of the delivered order messages, sends the switchan error notification or an order reception notification depending on a result of the error check, performs an execution process for each of the order messages whose result of the error check is normal, and sends the switchan execution notification depending on the execution process.

Financial products trading system and financial products trading control method

A pole-number-changing rotary electric machine includes: a rotary electric machine; an n-group inverter; and a control unit for controlling the n-group inverter, wherein the control unit controls current phases of a current flowing through stator coils such that a current phase degree of freedom, which is a number of current phases per pole pair controllable by the n-group inverter, is equal to a number of groups n&#xd7;a number of phases m/2 at a time of high polarity driving and the number of groups n&#xd7;the number of phases m at a time of low polarity driving, where the number of groups n is a multiple of 4 and the number of phases m is a natural number of 3 or more and relatively prime to the number of groups n.

Pole-number-changing rotary electric machine and driving method for pole-number-changing rotary electric machine

A heat generating device includes a heat generating element enclosed in an air-permeable stretch bag. The heat generating element includes an air-permeable first side adapted to be located proximal to the skin of a wearer, a second side adapted to be located distal to the skin of a wearer, and a heat generating member interposed between the first side and the second side. It is preferred that a part of the heat generating element is fixed to a part of the inner side of the stretch bag in the overlap between the stretch bag and the heat generating element in a plan view of the heat generating device.

Heat generating eye mask

A heat generating device includes an air-permeable first side located proximal to a wearer's body, a second side located distal to a wearer's body, and a heat generating member between the two sides. The second side includes an adhesive layer for attaching the device to a garment. The first side is formed of a nonwoven fabric having an uneven surface topography. The nonwoven fabric includes a first fiber layer, inclusive of a first surface of the fabric, and a second fiber layer, inclusive of a second surface of the fabric, partly bonded to each other and including a large number of protrusions and recesses on the side of the first fiber layer. The first surface is used as the first side.

Heat generating device

A water-based ink comprising (A) a coloring material; and (B) an aqueous dispersion of polymer particles comprising a water-insoluble graft copolymer having an acrylic polymer side chain (P) and a salt-forming group (Q), wherein the acrylic polymer side chain (P) is a polymer made of at least one monomer represented by the formula (1):CH&#x2550;C(R)COOR&#x2003;&#x2003;(1)wherein Ris hydrogen atom or an alkyl group having 1 to 5 carbon atoms; and Ris an alkyl group having 1 to 20 carbon atoms. The water-based ink is used for a water-based ink for inkjet printing.

Growing community of inventors

Tokyo, Japan

Yuki Hidaka