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公开(公告)号：US10605188B2
公开(公告)日：2020-03-31
申请号：US16258756
申请日：2019-01-28
申请人： Hitachi, Ltd.
发明人： Kohsei Matsumoto , Kanako Esaki , Kiyoto Ito , Hiroto Naito , Yuzo Shirakawa
摘要： The control device includes: an observation unit that calculates an amount relating to a state of a control target detected by a sensor; an abnormality predictor detection unit that detects an abnormality predictor of the control target; a reward calculation unit that calculates a reward which is an amount obtained by evaluating pass or fail of an operation of the control target; a basic control amount calculation unit that calculates data relating to the state during an operation and a basic control amount serving as a reference to control the control target; a control amount search unit that searches for a control amount at which the reward satisfies a predetermined condition based on the basic control amount, the data relating to the state during the operation and the reward; and a control unit that generates a command value to the control target.
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公开(公告)号：US11888195B2
公开(公告)日：2024-01-30
申请号：US17639771
申请日：2020-03-26
申请人： HITACHI, LTD.
发明人： Yuzo Shirakawa , Takao Ishikawa
IPC分类号： H01M8/0612 , H01M8/04014
CPC分类号： H01M8/0618 , H01M8/04022
摘要： An object of the present invention is to provide a fuel cell power generation system that can attain a higher fuel utilization rate and can also attain higher power generation efficiency simultaneously. The fuel cell power generation system includes an oxide-ion-conducting first fuel cell 11 that performs reformation of a fuel containing hydrocarbon and power generation and a proton-conducting second fuel cell 12 that performs power generation by being supplied with hydrogen from the first fuel cell 11. The fuel utilization rate of the first fuel cell 11 can be set to 30% or lower, for example, and the fuel utilization rate of the second fuel cell 12 can be set to 70% or higher, for example. By adopting such a multi-stage configuration, it is possible to increase the power generation efficiency as a whole and to also attain a high fuel utilization rate simultaneously.
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公开(公告)号：US11732624B2
公开(公告)日：2023-08-22
申请号：US17639748
申请日：2020-03-26
申请人： HITACHI, LTD.
发明人： Hiroaki Hasegawa , Yuzo Shirakawa , Hiroto Naito , Takao Ishikawa
摘要： Provided is a device that uses a high-temperature exhaust gas released from an internal combustion engine to produce a fuel. The present invention relates to the fuel production device including the internal combustion engine, an electrolysis device connected to the internal combustion engine, and a hydrogenation reactor connected to the electrolysis device, wherein the electrolysis device is a device for decomposing high-temperature water vapor contained in the exhaust gas from the internal combustion engine into hydrogen and oxygen, and the hydrogenation reactor is a device for converting the hydrogen resulting from the decomposition to the fuel.
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公开(公告)号：US11506115B2
公开(公告)日：2022-11-22
申请号：US16778555
申请日：2020-01-31
申请人： Hitachi, Ltd.
发明人： Yuzo Shirakawa , Hiroto Naito , Takao Ishikawa
摘要： The invention provides a cogeneration system capable of adjusting a heat-to-electric power ratio not only in an increasing direction, but also in a decreasing direction. The cogeneration system includes: a power generation device configured to supply electric power; a first heat exchanger configured to exchange heat between exhaust of the power generation device and water, so as to lower a temperature of the exhaust and obtain steam from the water; a reformer configured to generate a reformed gas by the steam reacting with a fuel; a second heat exchanger configured to cool the reformed gas generated by the reformer by heat exchanging; a reformed gas supply device configured to supply the reformed gas cooled by the second heat exchanger to the power generation device; a distributor configured to supply the steam to at least one of the reformer and a heat utilization device; and a control device configure to adjust a heat-to-electric power ratio by changing a supply destination of the steam in the distributor.
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公开(公告)号：US11035314B2
公开(公告)日：2021-06-15
申请号：US16266815
申请日：2019-02-04
申请人： Hitachi, Ltd.
发明人： Kanako Esaki , Kohsei Matsumoto , Kiyoto Ito , Yuzo Shirakawa , Hiroto Naito
IPC分类号： G06G7/70 , F02D41/26 , F02D41/00 , F02D41/24 , F02D19/06 , G05B13/02 , G06N20/00 , F02D35/02 , F02D41/14
摘要： According to one embodiment, a machine control system includes: a selecting unit which acquires a state quantity of a machine converted from data acquired by a sensor provided in the machine to select two or more learning models according to the acquired state quantity; a composing unit which inputs the state quantity acquired by the selecting unit to each of the two or more learning models selected by the selecting unit to calculate a composed value using a command value output from each of the learning models; and a learning unit which outputs a command value with respect to the machine in a range based on the composed value calculated by the composing unit, acquires a state quantity of the machine, searches for a command value of a specific condition from a combination of the output command value and the acquired state quantity, and outputs the searched command value to the machine, thereby creating a new learning model.
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公开(公告)号：US10197019B2
公开(公告)日：2019-02-05
申请号：US15311991
申请日：2015-05-18
申请人： HITACHI, LTD.
发明人： Atsushi Shimada , Takao Ishikawa , Yuzo Shirakawa
摘要： An ethanol engine system stabilizes components of reformed gas generated by a reformer and a calorific value of fuel supplied to an engine. The ethanol engine system includes a reservoir tank for an aqueous ethanol solution, a first supply device that supplies the aqueous ethanol solution to the reformer, a separator that cools mixed gas fed from the reformer, including the reformed gas, condenses water vapor included in the mixed gas and separates into gas and liquid, a reformed gas supply device that supplies the reformed gas separated by the separator to the engine, a recovery tank that collects a recovery solution separated by the separator, and a first recovery solution supply device that supplies the recovery solution in the recovery tank to the reformer or a second recovery solution supply device that supplies the recovery solution in the recovery tank to a combustion chamber of the engine.
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