Hitachi, Ltd.

Mitsubishi Pharma Corporation

Mitsubishi Electric Corporation

Mitsubishi Tanabe Pharma Corporation

Sharp Kabushiki Kaisha Corporation

Yoshiharu Hayashi

Yasushi Hayasaka

Hidekazu Fujimura

Satoru Shimizu

Akihiro Yamada

Katsuhito Shimizu

Masao Furukawa

Masayuki Fukai

Takaaki Sekiai

Tsuyoshi Shibata

Fumihiko Akahoshi

Masayuki Taniguchi

Hiroshi Kitajima

Naohiro Kusumi

Hiroshi Sakashita

Masaki Kanada

Yoshio Maruyama

Tooru Kimura

Yukiko Mouri

Masaya Inoue

Masahiko Fujita

Kazunori Tanaka

Toshiyuki Yoshizawa

Yoshitaka Kojima

Takuya Yoshida

Yoshinobu Utsumi

Masao Morita

Tomohiro Yoshida

Masahiro Takeuchi

Masatoshi Takada

Kanji Shinkawa

Yuji Abe

Ryuichi Shimomura

Syoichi Yasuda

Yoshihito Tanaka

Toru Eguchi

Toshihiro Morikawa

Akihira Tokuno

Kiyoshi Kobori

Takayoshi Ishida

Eiichi Kaminaga

Jinichirou Gotou

Takuya Yoshimura

Masakazu Kawasaki

Nobuharu Gotoh

Kazuyuki Kawasaki

Akihiko Futada

Tetsuma Tatsumi

Takuma Wada

Kazuya Nakamachi

Aki Kusunoki

An oxyfuel combustion boiler plant comprising: an air separation unit for manufacturing oxygen by separating nitrogen from air, a boiler having a burner for burning the oxygen supplied from the air separation unit and pulverized coal, and a primary system pipe for supplying the pulverized coal to the burner, an exhaust gas recirculation system pipe for supplying combustion exhaust gas discharged from the boiler to the primary system pipe, and a carbon dioxide capture unit for capturing carbon dioxide in the exhaust gas discharged from the boiler, the oxyfuel combustion boiler plant is further comprising: an oxygen supply pipe for supplying the oxygen manufactured by the air separation unit to the primary system pipe in the burner, and a pipe for supplying the combustion exhaust gas discharged from the boiler to the oxygen supply pipe, wherein an injection port of the oxygen supply pipe is disposed on an upstream side of an injection portion of the burner.

Oxyfuel combustion boiler plant

An oxyfuel combustion boiler plant having a first boiler and a second boiler for injecting gas including oxygen in higher concentration than that in the air, gas including carbon dioxide in higher concentration than that in the air, and fuel from a burner and generating steam by combustion gas in a furnace, respectively, comprising:

Oxyfuel combustion boiler plant and operating method for the same

A gas concentration estimation device of a coal-burning boiler adapted to estimate the concentration of the gas component included in an exhaust gas emitted from a coal-burning boiler using a neural network, including: a process database section adapted to store process data of a coal-burning boiler; a filtering processing section adapted to perform filtering processing for extracting data suitable for learning of a neural network from the process data stored in the process database section; a neural-network learning processing section adapted to perform learning processing of the neural network based on the data extracted by the filtering processing section and suitable for learning of the neural network; and a neural-network estimation processing section adapted to perform estimation processing of the CO concentration or the NOx concentration in the exhaust gas emitted from the coal-burning boiler based on the learning processing of the neural-network learning processing section.

Power plant control device which uses a model, a learning signal, a correction signal, and a manipulation signal

An oxyfuel combustion boiler plant comprising:

Oxyfuel combustion boiler plant and operation method of oxyfuel combustion boiler plant

An oxyfuel boileris equipped with an oxygen separation apparatusto produce oxygen by separating oxygen from the air, a recirculation fanto supply a portion of combustion flue gas branched from the combustion flue gas discharged from the boiler to the oxyfuel boiler, a temperature sensorto detect gas temperature at a boiler outletin the oxyfuel boiler, and a control apparatusto calculate gas temperature at a furnace outletin the boiler from the gas temperature at the boiler outletdetected by the temperature sensorand control the operating condition of the recirculation fanso that the calculated gas temperature at the furnace outletbecomes a desired preset gas temperature.

Oxyfuel boiler and a method of controlling the same

A method for retrofitting a pulverized coal boiler in an air combustion boiler system is disclosed, which has a plurality of burners over a plurality of stages along the vertical direction on a wall surface of a furnace of the pulverized coal boiler and an after-air port for introducing air for two-stage combustion located above the burners to retrofit into a two-stage combustion pulverized coal boiler in an oxyfuel combustion boiler system.

Retrofit method for pulverized coal boiler

Dynamoelectric machine having holding grooves recessed into yoke portions with openings on respective facing portions of inner wall surfaces of trough portions, at axially inner ends of the yoke portions, having axial groove directions, and an end surface in a groove length direction constitutes a stopping surface. Magnet material holders are disposed spanning the trough portions radially inside inner circumferential surfaces near tip ends of claw-shaped magnetic pole portions, fitted from axially inside into each holding groove, are recessed to face each other on the trough portions restricting circumferential and radial motion by inner wall surfaces of the holding grooves and axially outward movement restricted by the stopping surface. Interfitting grooves having openings on surfaces facing the inner circumferential surfaces near the tip ends, having axial groove directions, and passing through in the axial direction, and permanent magnets fitted into the interfitting grooves are held by the magnet material holders.

Dynamoelectric machine and method for manufacturing a rotor therefor

A plant control apparatus has a measurement signal DB, an operation signal DB, a numerical value analysis executing unit, a numerical value analysis result DB, a model for estimating a value of a measurement signal for an operation signal, learning unit using the model, a learning information DB, a control logic DB for information used by an operation signal generating unit, a knowledge DB for plant running characteristics, and an analyzing unit processing information in the numerical value analysis result DB by information in the knowledge DB, learning information DB, operation signal DB, and measurement signal DB, wherein the analyzing unit includes at least one of a learning base analyzing unit checking adequacy of an operation method, a signal analyzing unit for evaluating an effect of the operation signal upon the plant and presence/absence of an abnormal signal, and a knowledge DB updating unit correcting information in the knowledge DB.

Plant control apparatus

There is provided a control apparatus including a function of generating an operation signal applied to a control subject and a model that simulates characteristics of the control subject, a function of receiving an evaluation value signal calculated based on a measurement signal obtained by applying the operation signal to the control subject and the model, and a function of learning to generate the operation signal such that an expected value of the sum of the evaluation value signals obtained from a present state to a future state is either maximum or minimum in which the evaluation value signal calculated based on the measurement signal from the model is calculated by adding a first evaluation value obtained based on a deviation between the measurement signal obtained from the model and a setpoint value, and a second evaluation value obtained based on a difference in characteristics between the model and the control subject.

Plant control apparatus and method having functions of determining appropriate learning constraint conditions

Assembly of a controller-integrated rotating electric machine is facilitated. In a controller-integrated rotating electric machine provided with a rotating electric machine unit having a rotor (), a stator (), and brackets (); a plurality of stator current switching circuit units () that are attached on an insulator cover () mounted on the brackets (); and a controller unit having a control circuit board (), the stator current switching circuit unit () is provided with a plurality of switching elements () and a plurality of switching elements (); a pair of heat sinks () with which the drain terminals of the switching elements () are connected; and a pair of electric connection members () that pull out the terminals of the switching elements () and that hold and integrate the pair of heat sinks (). Additionally, the plurality of stator current switching circuit units () is fixed to a relaying connection member (), and electric connections between the stator current switching circuit units () and outside members are performed by the intermediary of the relaying connection member ().

Controller-integrated rotating electric machine

A control system includes a basic control command operating unit, a fuel data storage unit, a running results database for storing past running results values of a control subject, a data creating unit configured to calculate a distance between data of the past running results values and the data sets and determining data set in which a distance between data becomes minimum, a modeling unit configured to model a relationship between operation parameters of a combustion apparatus and components in combustion gas of the combustion apparatus by using the data set determined by the data creating unit and a correcting unit for calculating combustion apparatus operation parameters with which components having a better condition than that of the components in a current gas are provided by using a model of the modeling unit and correcting operation command values of the basic control command operating unit by calculated operation parameters.

Control system for control subject having combustion unit and control system for plant having boiler

A method for configuring the physical model of a heat recovery steam generator that can estimate the state quantity of generated steam from the state quantity of the exhaust gas to be introduced, and capable of establishing the physical model of a combined cycle power generation facility thereby. The optimum values for the flow rates Flp and Fhp, pressures and temperatures Tlp and Thp of the low pressure main steam and high pressure main steam are computed in such a way as to ensure that an objective function E stored in advance will come close to zero.

Generated steam estimation method and device for heat recovery steam generator, and maintenance planning support method and system for power generation facility

A gas turbine performance analysis system includes a performance computation module for receiving an actual measured value of an inlet air temperature introduced to a compressor, a compressor pressure ratio, and a flow rate of fuel supplied to the gas turbine, and for calculating and outputting values of the gas turbine's power output and exhaust temperature based on these actual measured values. A performance estimation module evaluates the performance of the gas turbine based on the deviation between the values of power output and exhaust temperature outputted from the performance computation module and the actual measured values of power output and exhaust temperature. An adjustment module calculates a corrected value of the fuel flow rate based on the actual measured values of inlet air temperature, compressor pressure ratio and fuel flow rate, and inputs the corrected fuel flow rate value into the performance computation module.

Gas turbine performance analysis method and gas turbine performance analysis system

A thiazolidine derivative represented by the formula (I) wherein each symbol is as defined in the specification, and a pharmaceutically acceptable salt thereof exhibit a potent DPP-IV inhibitory activity, and can be provided as an agent for the prophylaxis or treatment of diabetes, an agent for the prophylaxis or treatment of obesity and the like.

Thiazolidine derivatives and medicinal use thereof

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Hitachinaka, Japan

Yoshiharu Hayashi