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公开(公告)号：US11319948B2
公开(公告)日：2022-05-03
申请号：US16603528
申请日：2018-04-10
申请人： KOBE STEEL, LTD.
发明人： Takashi Sato , Ryo Nakamichi , Masaki Matsukuma , Hiroki Saruta
摘要： A CAES generator includes a plurality of motors, a plurality of compressors, a pressure accumulator, an expander, a generator, an electric-motor inverter that changes a rotation speed of each of the motors, a feed command receiver that receives input power as a feed command value before feeding the input power, and a controller. The controller includes a compressor number calculation unit that calculates a maximum number of motors that are allowed to be driven at a rating based on the feed command value, and a compressor drive control unit that drives at the rating, the motors, the number of which is the maximum number calculated by the compressor number calculation unit.
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公开(公告)号：US11319876B2
公开(公告)日：2022-05-03
申请号：US16630815
申请日：2018-07-02
发明人： Masaki Matsukuma , Ayaka Nagahira
摘要： A compressed air energy storage power generation apparatus includes a power demand receiving unit that receives a power demand value of a consumer facility. The apparatus includes a first air supply valve that adjusts a flow rate of compressed air to be supplied from a low-pressure tank to an expander, a second air supply valve that adjusts a flow rate of compressed air to be supplied from a high-pressure tank to the expander, and a control device configured to open the first air supply valve according to the power demand value in a state where the second air supply valve is closed when the power demand value is less than a predetermined threshold, and to open the second air supply valve according to the power demand value when the power demand value is equal to or greater than the predetermined threshold.
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公开(公告)号：US11047302B2
公开(公告)日：2021-06-29
申请号：US16080625
申请日：2017-02-10
申请人： Kobe Steel, Ltd.
摘要： A compressed air energy storage (CAES) power generation apparatus includes a motor driven by renewable energy, a compressor driven by the motor, a pressure accumulating tank storing compressed air compressed by the compressor, an expander driven by the compressed air from the pressure accumulating tank, and a generator connected to the expander. The apparatus includes a first heat exchanger that performs heat exchange between the compressed air from the compressor to the pressure accumulating tank and a heat medium, cools the compressed air, and heats the heat medium, a heat accumulating tank that stores the heat medium heated by the first heat exchanger, a second heat exchanger that performs heat exchange between the compressed air from the pressure accumulating tank to the expander, heats the compressed air, and cools the heat medium, and third heat exchangers that perform heat exchange between the exhaust heat outside a system and a fluid in the system. The power generation efficiency of the apparatus is improved using the exhaust heat outside the system while the exhaust heat outside the system is cooled using the cold heat generated in the system of the apparatus.
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公开(公告)号：US11085704B2
公开(公告)日：2021-08-10
申请号：US16969963
申请日：2019-01-18
申请人： KOBE STEEL, LTD.
发明人： Masaki Matsukuma , Hiroki Saruta , Yuji Matsuo
摘要： A CAES power generation device includes a plurality of compression/expansion/combined machines, a pressure accumulation unit for storing compressed air, a plurality of heat exchangers, a heat storage unit for storing a heating medium, and a plurality of first containers 10 having a rectangular parallelepiped shape for accommodating the plurality of compression/expansion/combined machines and the plurality of heat exchangers. The plurality of first containers are arranged side by side so that long side surfaces face each other. The long side surface of the first container is provided with at least one vent being an outlet of a pipe for communicating the compression/expansion/combined machine with the outside of the container. A short side surface of the first container is provided with a first takeout port for taking out an air pipe that fluidly connects the compression/expansion/combined machine and the pressure accumulation unit, and a second takeout port for taking out a heating medium pipe that fluidly connects the heat exchanger and the heat storage unit.
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公开(公告)号：US10907542B2
公开(公告)日：2021-02-02
申请号：US16495476
申请日：2018-03-15
申请人： KOBE STEEL, LTD.
发明人： Yohei Kubo , Masaki Matsukuma , Yuji Matsuo , Takashi Sato , Ryo Nakamichi
摘要： A compressor, a first heat exchanger, a first heat storage unit, a pressure accumulation unit, a second heat exchanger, and a second heat storage unit are provided. The first heat storage unit and the second heat storage unit are connected by a first flow passage and a second flow passage. The first and second flow passages are connected by a third flow passage. A first on-off means is provided in a first region of the first flow passage and a second on-off means is provided in a second region. A third on-off means is provided in a third region of the second flow passage, and a fourth on-off means is provided in a fourth region. A driving means and a heating means are provided in the third flow passage.
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公开(公告)号：US10794279B2
公开(公告)日：2020-10-06
申请号：US16490706
申请日：2018-03-23
申请人： KOBE STEEL, LTD.
发明人： Masaki Matsukuma , Ayaka Nagahira
摘要： This compressed air storage power generation device 10 is provided with: a power demand receiving unit 60; a cold heat demand receiving unit 61; a power supply adjustment device 19 which adjusts the amount of power generated by a generator 15; a cold heat supply adjustment valve 22 which adjusts the amount of cold heat supplied from a first heat medium storage unit 21 to consumer equipment 3; and a control device which controls the power supply adjustment device 19 and the cold heat supply adjustment valve 22 so as to supply the consumer equipment 3 with power and cold heat corresponding to the power demand value and the cold heat demand value.
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公开(公告)号：US10746097B2
公开(公告)日：2020-08-18
申请号：US15537587
申请日：2015-12-14
申请人： Kobe Steel, Ltd.
发明人： Yohei Kubo , Masatake Toshima , Makoto Nishimura , Masaki Matsukuma , Hiroki Saruta , Kanami Sakamoto
摘要： A compressed air energy storage power generation device includes a first heat exchanger, a heat storage tank, a second heat exchanger, a heating unit, a first power distributor, and a controller. The first heat exchanger performs heat exchange between the compressed air from a compressor and the heating medium. The heat storage tank stores the heating medium heatexchanged by the first heat exchanger. The second heat exchanger performs heat exchange between the compressed air from an accumulator tank and the heating medium from the heat storage tank. The first power distributor distributes the generated power of the power generator to a power system and the heating unit. When the internal pressure of the accumulator tank reaches a predetermined pressure and the generated power is larger than the power demand, the controller supplies a part or all of the generated power to the heating unit by the first power distributor.
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公开(公告)号：US10352310B2
公开(公告)日：2019-07-16
申请号：US15323755
申请日：2015-07-28
申请人： Kobe Steel, Ltd.
发明人： Kanami Sakamoto , Hiroki Saruta , Masaki Matsukuma
摘要： A compressed air storage and power generation device (1) is provided with motors (3a-3c), compressors (4a-4c), compressed air storage tanks (5a-5c), injection-side valves (6a-6e), expanders (7a-7c), discharge-side valves (8a-8e), generators (9a-9c), an output sensor (10), pressure sensors (11a-11c), and a control device (12). The control device (12) uses a tank (5c) with a relatively large capacity for long-period variable power and uses tanks (5a, 5b) with relatively low capacities for short-period variable power, all such power having been generated using natural energy, and thereby performs control by which both the long-period and short-period variable power are leveled out and power is output according to the power demand. The compressed air storage power generation device (1) levels out both the long-period and short-period variable power and outputs the power according to the power demand.
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公开(公告)号：US11952941B2
公开(公告)日：2024-04-09
申请号：US17608697
申请日：2020-03-24
发明人： Masaki Matsukuma
摘要： A CAES power generation device includes: a compressor/expander combined machine that is of displacement type and has a function as a compressor for compressing air and a function as an expander for expanding compressed air; a motor/generator combined machine that is mechanically connected to the compressor/expander combined machine and has a function as an electric motor for driving the compressor/expander combined machine and a function as a generator driven by the compressor/expander combined machine; and a pressure accumulation tank that is fluidly connected to the compressor/expander combined machine and stores compressed air generated by the compressor/expander combined machine.
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公开(公告)号：US11319875B2
公开(公告)日：2022-05-03
申请号：US16498613
申请日：2018-03-15
申请人： KOBE STEEL, LTD.
发明人： Yohei Kubo , Masaki Matsukuma , Yuji Matsuo , Takashi Sato , Ryo Nakamichi
摘要： In a main flow passage, a first heat exchanger, a first heat storage unit, a second heat exchanger, and a second heat storage unit are connected by a heating medium flow passage. The main flow passage allows a heating medium to be circulated. A sub flow passage includes a shortened flow passage which is a part of the heating medium flow passage and branches from the heating medium flow passage between the second heat exchanger and the second heat storage unit and extends to the first heat storage unit. The sub flow passage allows circulation of the heating medium between the first heat storage unit and the second heat exchanger. A first heating means in a middle of the shortened flow passage, the first heating means heating a passing heat medium, and a switching means conducting switching between the main flow passage and the sub flow passage are provided.
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