Mitsubishi Hitachi Power Systems, Ltd.

Kabushiki Kaisha Toshiba

Toshiba Solutions Corporation

Hitachi, Ltd.

Tdk Corporation

Ricoh Company, Ltd.

Mitsubishi Power, Ltd.

Mitsubishi Heavy Industries Limited

Takuya Yoshida

Yasuhiro Yoshida

Kazunori Yamanaka

Fumiyuki Suzuki

Norihiro Iyanaga

Tatsuro Yashiki

Koji Okada

Eunkyeong Kim

Yoshihiro Fujii

Kenichiro Nomura

Takaaki Sekiai

Yukinori Katagiri

Yuya Tokuda

Yuichi Takahashi

Noritaka Chiyo

Naohiro Kusumi

Miyuki Kawata

Atsushi Yamashita

Masaaki Tomizawa

Kazuo Takahashi

Tatsuyuki Matsushita

Ryotaro Hayashi

Tatsurou Yashiki

Toshio Tomonari

Hideki Ono

Shigeo Hatamiya

Naoyuki Nagafuchi

Yoshiharu Hayashi

Shingo Abe

Kazuhito Koyama

Takehisa Kato

Akihiro Yamada

Tomohiro Moriki

Masaki Matsushima

Norikazu Hosaka

Hiroya Kumashio

Yoshinari Hori

Masataka Yamada

Minako Tada

Toshihiro Morikawa

Jinichiro Goto

Takayasu Kasahara

Jinichirou Gotou

Michihisa Tokui

Kentaro Kamiyama

Daiki Yamane

Yuki Kaseda

Nobuyuki Hokari

Yoshida Yasuhiro

Disclosed herein is a coil component that includes a substrate, and a planar spiral coil pattern provided on the surface of the substrate. The coil pattern has a circularity higher in its inner shape than in its outer shape.

Coil component and wireless power transmission device having the same

Disclosed herein is a coil component that includes a coil pattern provided on the substrate. The outer and inner shapes of the coil pattern are both larger in width in a first direction than a second direction. The outer shape of the coil pattern has a pair of first outer shape sections and a second outer shape section positioned between the pair of first outer shape sections in the first direction and having a width in the second direction larger than that of the first outer shape sections. The inner shape of the coil pattern has a pair of first inner shape sections and a second inner shape section positioned between the pair of first inner shape sections in the first direction and having a width in the second direction larger than that of the first inner shape sections.

Coil component

Disclosed herein is a coil component that includes a substrate having a first surface, and first and second coil patterns coaxially formed on the first surface of the substrate and electrically isolated from each other. The first coil pattern has a plurality of turns including a first turn and a second turn. A predetermined turn of the second coil pattern is disposed between the first and second turns of the first coil pattern.

Coil component and wireless communication device having the same

An objective of the present invention is to provide a future state estimation method and future state estimation device with which, given that the space in which the estimation is carried out is finite, it is possible to rapidly estimate the states of a controlled object and the peripheral environment thereof in the form of probability density distribution for infinite future. Provided is a future state estimation device characterized by comprising: a model storage part for saving a model for simulating a subject of simulation and the peripheral environment of the subject of simulation; a future state forecast result storage part for storing information obtained by estimating future states of the subject of simulation and the peripheral environment of the subject of simulation within a finite space in the form of probability density distribution, for either an infinite time or a given time step in the future; and a future state forecast computation part for carrying out calculation, which is equivalent to a series, using the model for simulating the future states of the subject of simulation and the peripheral environment of the subject of simulation in the form of probability density distribution.

Future state estimation device and future state estimation method

A control parameter optimizing system and an operation optimizing apparatus equipped therewith are provided, the system being applicable to an existing plant without modifying the control panel or equipment of the plant, the system further being capable of optimizing the operation control of the plant in accordance with diverse operational requirements. The system includes an objective function setting section, a plant model, and a control parameter optimizing section. The control parameter optimizing section includes an optimization control parameter selecting section and an optimization control parameter adjusting section. The optimization control parameter selecting section selects as an optimization control parameter the control parameter for optimizing an objective function based on control logic information extracted from a power plant. The optimization control parameter adjusting section adjusts the value of the optimization control parameter using the plant model in such a manner as to optimize the objective function.

Control parameter optimizing system that optimizes values of control parameters of an existing power plant

Provided is a control parameter automatic-adjustment apparatus that adjusts a control parameter which is used when a control apparatus of a plant calculates an operational control signal, the apparatus including: a simulator that simulates operation of the plant; a learning unit that searches for an optimal control parameter using the simulator; and a knowledge database that stores knowledge information which associates an amount of change in the control parameter with an amount of change in a state of the plant, in which the learning unit includes a search range determination unit that determines a control parameter search range based on the knowledge information that is stored in the knowledge database.

Control parameter automatic-adjustment apparatus, control parameter automatic-adjustment method, and control parameter automatic-adjustment apparatus network

Control parameter optimizing system that optimizes values of control parameters of an existing power plant and operation control optimizing apparatus equipped therewith

There is provided a combined cycle power plant in which a high-pressure steam turbine and an intermediate-pressure steam turbine can operate in a state where amounts of thermal effect thereof are close to a limit value, and capable of reducing start-up time. A combined cycle power plant includes: an exhaust heat recovery boiler that includes a high-pressure superheater which superheats steam for a high-pressure steam turbine, and a reheater which reheats steam for an intermediate-pressure steam turbine; bypass pipes through which steam bypasses the high-pressure superheater and the reheater; bypass valves that regulate flow rates of steam which flows through the bypass pipes; and a bypass controller that controls the bypass valves such that a difference between thermal effect-amount margins of the turbines is decreased.

Combined cycle power plant and start-up method of the same

To provide a start-up control device and a start-up control method for a power plant capable of changing the start-up completion estimated time to a desired time simply and safely while starting the power plant. The start-up control device includes an equipment state quantity acquisition unit acquiring an equipment state quantity of the power plant, a start-up schedule calculation unit calculating a current start-up schedule based on the equipment state quantity and a first thermal stress limiting value and calculating a start-up schedule changing plan based on the equipment state quantity and a second thermal stress limiting value, an equipment operation amount calculation unit calculating an equipment operation amount of the power plant based on the current start-up schedule, a screen display unit displaying respective start-up completion estimated times of the current start-up schedule and the start-up schedule changing plan, and an instruction input unit instructing the start-up schedule calculation unit to perform switching from the current start-up schedule to the start-up schedule changing plan.

Start-up control device and start-up control method for power plant

An activation control apparatus permits activating a steam turbine safely at high speed in response to a power generation plant state. A heat source apparatus heats low-temperature fluid to generate high-temperature fluid, and steam generation equipment generates steam by thermal exchange with the high-temperature fluid. A steam turbine is driven by the steam, and an adjustment apparatus adjusts a plant operation amount. A thermal effect amount prediction calculation device calculates a prediction value for a thermal effect amount for use for activation control of the steam turbine, and a changeover device decides, based on a state value of the power generation plant, the sensitivity of the thermal effect amount to a variation of the plant operation amount and outputs a changeover signal in accordance with the sensitivity. Based on the changeover signal, an adjustment device calculates the plant operation amount so as not to exceed a predetermined limit value.

Activation control apparatus for steam turbine

A steam turbine power plant includes a life consumption amount calculator configured to calculate life consumption amounts of a turbine rotor based on a value measured by a measurer, a thermal stress limit update timing determining device configured to determine a time when thermal stress limits are updated, an accumulated life consumption amount calculator configured to calculate accumulated life consumption amounts of the turbine rotor when the thermal stress limits are updated, a planned life consumption amount setting device configured to set planned life consumption amounts of the turbine rotor based on the accumulated life consumption amounts of the turbine rotor, a thermal stress limit calculator configured to calculate and update the thermal stress limits based on the planned life consumption amounts of the turbine rotor, and a plant command value calculator configured to calculate a plant command value based on the thermal stress limits.

Steam turbine power plant and method for activating steam turbine power plant

Provided is a steam turbine plant activation control device that can flexibly handle an initial state amount of a steam turbine plant and activate a steam turbine at a high speed. The activation control devicefor the steam turbine plant includes a heat source deviceconfigured to heat a low-temperature fluid using a heat source medium and generate a high-temperature fluid, a steam generatorfor generating steam by thermal exchange with the high-temperature fluid, a steam turbineto be driven by the steam, and adjustersconfigured to adjust operation amounts of the plant.

Activation control device

In a decryption apparatus according to an embodiment, a holding device pre-holds a verification formula. A determination device performs a calculation based on the verification formula read from the holding device by substituting, into the verification formula, the part of the re-encrypted data received from a re-encryption apparatus and the public key of a re-encryption key generation apparatus and the private key of the decryption apparatus, to determine whether or not the verification formula holds true. An output device outputs verification success when a result of the determination indicates that the verification formula holds true.

Re-encrypted data verification program, re-encryption apparatus and re-encryption system

An object of the present invention is to provide a solar heat steam cycle system capable of operating efficiently and stably in keeping with the status of collected or stored heat, and a control method for use with the system. The system includes a heat collector () which collects solar thermal energy, a thermal storage device () which stores the solar thermal energy collected by the heat collector, a feed water heater () which heats feed water, an evaporator () which evaporates the feed water supplied from the feed water heater, and a steam turbine () driven by steam generated by the evaporator. The system includes a control valve () which controls allocations of heating medium supplied from the thermal storage device to the evaporator and the feed water heater.

Solar heat steam cycle system

A re-encryption system according to this embodiment includes a file sharing apparatus and a re-encryption apparatus. Upon receiving a file request from the client apparatus, the file sharing apparatus acquires a first encrypted file based on the file request, and transmits a re-encryption request including the first encrypted file to the re-encryption apparatus. The re-encryption apparatus re-encrypts the first encrypted file included in the re-encryption request to the second encrypted file based on the re-encryption key, and transmits the second encrypted file to the file sharing apparatus. The file sharing apparatus transmits the second encrypted file to the client apparatus. The client apparatus obtains the file by decrypting the second encrypted file based on a private key corresponding to the public key of the member.

Re-encryption system, re-encryption apparatus, and program

Growing community of inventors

Tokyo, Japan

Takuya Yoshida