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1.发明申请DUAL-SHAFT GAS TURBINE POWER GENERATION SYSTEM, AND CONTROL DEVICE AND CONTROL METHOD FOR GAS TURBINE SYSTEM 审中-公开双轴气涡轮发电系统及气体涡轮机系统控制装置及控制方法公开(公告)号：US20170077750A1
公开(公告)日：2017-03-16
申请号：US15343719
申请日：2016-11-04
Applicant: HITACHI, LTD.
Inventor： Noriaki HINO , Naohiro KUSUMI , Kazuo TAKAHASHI , Tomomichi ITO
CPC classification number: H02J13/0006 , F01D15/10 , F02C3/04 , F02C3/10 , F02C7/057 , F02C7/36 , F02C9/00 , F02C9/20 , F02C9/54 , F05D2220/7642 , F05D2270/053 , F05D2270/335 , H02J3/34 , H02K7/1823 , H02P3/02
Abstract: The dual-shaft gas turbine power generation system includes: a high-pressure gas turbine; a first rotating shaft connecting a compressor and the high-pressure gas turbine; an electric motor connected to the first rotating shaft; a governor which adjusts the amount of air taken into the compressor; a low-pressure gas turbine; a second rotating shaft connected to the low-pressure gas turbine; a synchronous power generator connected to the second rotating shaft; a frequency converter which converts the frequency of power transmitted between the synchronous power generator and the electric motor; and a control device which controls a frequency converter control device for controlling the frequency converter, and the governor, on the basis of a power output command value indicating the power to be outputted to an external grid.
Abstract translation: 双轴燃气轮机发电系统包括：高压燃气轮机; 连接压缩机和高压燃气轮机的第一旋转轴; 连接到第一旋转轴的电动马达; 调节进入压缩机的空气量的调速器; 低压燃气轮机; 连接到低压燃气轮机的第二旋转轴; 连接到所述第二旋转轴的同步发电机; 变频器，其转换同步发电机与电动机之间传递的动力频率; 以及控制装置，其基于指示要输出到外部电网的电力的功率输出指令值，控制用于控制变频器的变频器控制装置和调速器。
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公开(公告)号：US20230369988A1
公开(公告)日：2023-11-16
申请号：US18026111
申请日：2020-09-18
Applicant: HITACHI MITSUBISHI HYDRO CORPORATION , HITACHI, LTD.
Inventor： Akira BANDO , Takahiko KIKUI , Kenta WATANABE , Tomomichi ITO , Yasuhiro KIYOFUJI , Masakazu ISHIKAWA , Yosuke NAKAIDE
CPC classification number: H02M7/4835 , H02M1/32 , H02M1/0048
Abstract: A modular multilevel power converter includes: a capacitor voltage adjuster that calculates an active current component command to make an average voltage of capacitors match a command value; an active power detector that receives an AC current signal and an AC voltage signal and calculates an active power; an active power adjuster that calculates a DC current command value to make the active power match a command value; a first active power command suppressor that suppresses an absolute value of an active power command value; and a second active power command suppressor that adjusts an absolute value of an active power command value.
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公开(公告)号：US20130127172A1
公开(公告)日：2013-05-23
申请号：US13658889
申请日：2012-10-24
Applicant: HITACHI, LTD.
Inventor： Mamoru KIMURA , Nobuhiro KUSUNO , Tomomichi ITO , Tetsuo FUJIGAKI , Daisuke KORI , Motonobu IIZUKA , Akiyoshi KOMURA
CPC classification number: H02K17/44 , F03D7/04 , F03D7/042 , H02K11/042 , H02K11/33 , H02P9/007 , H02P9/44 , Y02E10/725
Abstract: An electrical rotating machine system that can be easily maintained and can provide improved power generation efficiency. The electrical rotating machine system includes:a first electrical rotating machine having a first stator that has first stator windings, and a first rotor that has first rotor windings and is disposed on the internal diameter side of the first stator so as to have a gap between the internal diameter side of the first stator and the first rotor itself; a second electrical rotating machine having a second stator that has second stator windings, and a second rotor that has second rotor windings and is disposed on the internal diameter side of the second stator so as to have a gap between the internal diameter side of the second stator and the second rotor itself; and at least one power converter that is electrically connected to the first rotor windings and the second rotor windings, and configured to rotate when the first rotor rotates.
Abstract translation: 一种易于维护的电动旋转机器系统，可以提供更好的发电效率。 旋转电机系统包括：具有第一定子的第一旋转电机，其具有第一定子绕组;以及第一转子，该第一转子具有第一转子绕组，并且设置在第一定子的内径侧上， 第一定子的内径侧和第一转子本身; 具有具有第二定子绕组的第二定子的第二旋转电机和具有第二转子绕组并且设置在第二定子的内径侧上的第二转子，以在第二定子绕组的内径侧之间具有间隙 定子和第二转子本身; 以及至少一个功率转换器，其电连接到所述第一转子绕组和所述第二转子绕组，并且构造成当所述第一转子旋转时旋转。
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公开(公告)号：US20190305590A1
公开(公告)日：2019-10-03
申请号：US16307395
申请日：2016-07-11
Applicant: Hitachi, Ltd.
Inventor： Tomomichi ITO , Akira KIKUCHI , Masahiro WATANABE
Abstract: Providing a power system and a method for stabilizing a system, in which the number of generators to be disconnected is reduced to narrow an area influenced by a grid fault in the case where the reliability of the state estimation calculation is judged to be high. The power system stabilizing method applied to a power system configured to include a plurality of feeders including circuit breakers, a plurality of nodes, a plurality of generators, and a plurality of loads, in which method: a protection relay detects a grid fault by using an output from a first sensor installed close to the circuit breaker, thereby opening-controlling the circuit breaker, and the circuit breaker is opening-controlled by a power system stabilization output; a state estimation value of a power system obtained by using the first sensor output and a state detection value, of the power system, containing information associated with measurement time measured in the power system are compared with each other to judge reliability of the state estimation value; the circuit breaker which is to be newly cut off from a viewpoint of power system stability after occurrence of a grid fault at a supposed grid fault point of the power system is stored, and the circuit breaker which is to be cut off every reliability judgment result of the state estimation value is stored; and at the time of occurrence of a grid fault of the power system, a turn-off command for the circuit breaker which is selected in response to the reliability judgment result of the state estimation value so as to be newly cut off is set as the power system stabilization output.
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公开(公告)号：US20140111066A1
公开(公告)日：2014-04-24
申请号：US14049719
申请日：2013-10-09
Applicant: HITACHI, LTD.
Inventor： Tomomichi ITO , Naohiro KUSUMI , Noriaki HINO , Nobuhiro KUSUNO , Aung KOTHET
IPC: H02K3/12
CPC classification number: H02K3/12 , H02K3/28 , H02K11/33 , H02M2001/123 , Y02E10/725
Abstract: A rotary machine includes two sets of three-phase stator winding wires and two sets of inverters connected to the same direct-current power supply. Alternating-current terminals of the inverters are respectively connected to the three-phase stator winding wires. Stator winding wires are housed in a plurality of slots to form a stator. The two sets of three-phase stator winding wires and the stator winding wires in the same phase of the sets are started to be wound from the slot positions, with phases thereof being different from each other by 180 degrees, among the plurality of slots and are finished being wound in the slot positions, with phases thereof different from each other by 180 degrees. Winding end points of the three-phase stator winding wires are respectively connected in common, and alternating-current voltages having the same magnitude and opposite phases are applied to the two sets of three-phase stator winding wire.
Abstract translation: 旋转机器包括两组三相定子绕组线和两组连接到同一直流电源的逆变器。 逆变器的交流端子分别连接到三相定子绕组。 定子绕组容纳在多个槽中以形成定子。 两组三相定子绕组和集合相同相位中的定子绕组开始从多个槽中彼此相差180度的槽位开始卷绕，并且 完成卷绕在槽位置，其相位彼此相差180度。 三相定子绕组的绕组端点分别相互连接，并且具有相同幅度和相位相位的交流电压被施加到两组三相定子绕组线。
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公开(公告)号：US20160006368A1
公开(公告)日：2016-01-07
申请号：US14768999
申请日：2013-02-20
Applicant: HITACHI, LTD.
Inventor： Nobuhiro KUSUNO , Tomomichi ITO
IPC: H02M7/537
CPC classification number: H02M7/537 , H02M7/487 , H02M7/5395 , H02M2001/0025 , H02M2001/325
Abstract: A power converter includes semiconductor switching elements conducting when the semiconductor switching elements fail; and open/close units that are disposed between parts having a plurality of different voltage levels and connection portions where the semiconductor switching units, which are to be connected to the parts having the different voltage levels, are connected to each other, and that open or close paths between the parts having the different voltage levels and the connection. When an excess current flows through any one of the open/close units, the one of the open/close unit opens the current path between the part having the corresponding voltage level and the connection portion. Then the power converter does not output the voltage to which the open/close unit is connected, and thereby the number of output voltage levels is reduced.
Abstract translation: 功率转换器包括当半导体开关元件失效时导通的半导体开关元件; 以及设置在具有多个不同电压电平的部分之间的开/关单元和要连接到具有不同电压电平的部分的半导体开关单元彼此连接的连接部分，以及开/ 具有不同电压电平的部分和连接之间的紧密路径。 当过电流流过任何一个打开/关闭单元时，打开/关闭单元中的一个打开具有相应电压电平的部分和连接部分之间的电流路径。 然后电源转换器不输出连接开/关单元的电压，从而降低输出电压电平的数量。
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公开(公告)号：US20150365010A1
公开(公告)日：2015-12-17
申请号：US14722199
申请日：2015-05-27
Applicant: Hitachi, Ltd.
Inventor： Yusuke ABE , Tomomichi ITO , Masahiro TANIGUCHI
Abstract: A power converter with a simple configuration capable of controlling a rush current is provided. The power converter is installed between an electric power system and a power storage device, includes a harmonic filter in an AC circuit on the electric power system side and a DC capacitor and a DC breaker in a DC circuit on the power storage device side, and performs AC/DC conversion processing using an inverter. The power converter is configured in such a way that, when the power storage device starts running, a current limited by a limiting resistor is given from the electric power system side to the DC capacitor, the difference between the voltage of the DC capacitor and the voltage of the power storage device is monitored, and the power converter is connected to the power storage device by switching on the DC breaker on the basis of the difference.
Abstract translation: 提供具有能够控制冲击电流的简单结构的电力转换器。 电力转换器安装在电力系统和蓄电装置之间，在电力系统侧的AC电路中包括谐波滤波器，在蓄电装置侧包括直流电容器和直流断路器，以及 使用逆变器执行AC / DC转换处理。 功率转换器的配置方式为：当蓄电装置开始运转时，由电力系统侧向直流电容器施加限流电阻限制的电流，直流电容器的电压与 监视蓄电装置的电压，并且通过基于差异来接通直流断路器而将功率转换器连接到蓄电装置。
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公开(公告)号：US20180058426A1
公开(公告)日：2018-03-01
申请号：US15675291
申请日：2017-08-11
Applicant: Hitachi, Ltd.
Inventor： Shinichi KONDOU , Masachika NAKATANI , Tomomichi ITO , Mitsuru SAEKI , Kiyoshi SAKAMOTO
CPC classification number: F03D7/048 , F03D7/0204 , F03D7/0264 , F03D7/028 , F05B2270/20 , F05B2270/335 , Y02E10/721 , Y02E10/723
Abstract: The purpose is to provide a wind farm that is capable of increasing power generation output or a control method of a wind farm. In order to solve the problems, a wind farm according to the present invention includes plural wind power generation apparatuses each of which has: blades; a nacelle that supports the blades to make the blades rotatable; and a tower that supports the nacelle to make the nacelle rotatable in its yaw movement, the wind farm including a control device that, with the use of the wind condition information of the wind farm, the disposition information of first wind power generation apparatuses that are stopping power generation and the disposition information of second wind power generation apparatuses that are located on the leeward side of the first wind power generation apparatuses among all the wind power generation apparatuses, and the design information of the first wind power generation apparatuses, outputs a yaw angle designation value to the first wind power generation apparatuses or the second wind power generation apparatuses so that the generated electric energy of the wind farm becomes large.
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公开(公告)号：US20160254780A1
公开(公告)日：2016-09-01
申请号：US15048150
申请日：2016-02-19
Applicant: Hitachi, Ltd.
Inventor： Tomomichi ITO , Hideaki KUNISADA , Kaoru SONOBE , Hirotaka NISHIZAWA , Yoshiro NAKAJIMA , Tamaki WADA
CPC classification number: H02S40/12 , H01L31/02021 , H02J3/383 , H02M7/48 , H02S40/32 , Y02E10/563
Abstract: A power conversion apparatus that is connected between a solar panel and a power system, in which the power conversion apparatus includes a power generating mode that converts a generated power of the solar panel into an alternating current power, and a snow melting mode that heats the solar panel by obtaining the power from the power system, and supplying the power to the solar panel, and at the time of the snow melting mode, the power conversion apparatus controls a voltage which is output to the solar panel such that a first current value being a value where a current that is supplied to the solar panel from the power conversion apparatus is smaller than an overcurrent level of the solar panel flows in a predetermined period.
Abstract translation: 一种连接在太阳能电池板和电力系统之间的电力转换装置，其中电力转换装置包括将太阳能电池板的发电电力转换为交流电力的发电模式，以及加热 太阳能电池板，通过从电力系统获得电力，并将电力供应到太阳能电池板，并且在融雪模式时，电力转换装置控制输出到太阳能电池板的电压，使得第一电流值 是从电力转换装置向太阳能电池板供给的电流小于太阳能电池板的过电流的规定期间的值。
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公开(公告)号：US20140216047A1
公开(公告)日：2014-08-07
申请号：US14155813
申请日：2014-01-15
Applicant: Hitachi, Ltd.
Inventor： Tetsuro MORISAKI , Naohiro KUSUMI , Noriaki HINO , Tomomichi ITO , Kazuo TAKAHASHI
IPC: F02C9/56
CPC classification number: F02C9/56 , F01D5/06 , F01D13/003 , F02C3/113 , F02C7/268 , F02C7/275 , F02C7/32 , F02C7/36 , F02C9/28 , F02C9/32 , F02C9/34 , F02C9/48 , F02C9/50 , F02C9/54 , F03D15/00 , F23R3/34 , F23R3/343 , F23R3/346 , Y02E10/72
Abstract: A two-shaft gas turbine having high operability is provided. The two-shaft gas turbine includes: a gas generator having a compressor, a combustor and a high pressure turbine; a power turbine having a low pressure turbine; a load connected to the power turbine; a motor/generator capable of rotatably driving the gas generator and capable of extracting power from the gas generator; electric equipment controlling the rotational driving and the power extraction by delivering electric power between the electric equipment and the motor/generator; and a control device controlling the electric equipment, wherein the combustor has a plurality of combustion regions to which a fuel is supplied through fuel adjustment means which are independent from each other, and the control device controls a delivery amount of the electric power delivered by the electric equipment corresponding to the number of combustion regions to which the fuel is supplied.
Abstract translation: 提供了具有高可操作性的双轴燃气轮机。 双轴燃气轮机包括：具有压缩机，燃烧器和高压汽轮机的气体发生器; 具有低压涡轮机的动力涡轮机; 连接到动力涡轮机的负载; 能够旋转地驱动气体发生器并且能够从气体发生器提取动力的电动机/发电机; 电气设备通过在电气设备和电动机/发电机之间传递电力来控制旋转驱动和功率提取; 以及控制所述电气设备的控制装置，其特征在于，所述燃烧器具有多个燃烧区域，所述多个燃烧区域通过彼此独立的燃料调节装置供给燃料，并且所述控制装置控制由所述燃料调节装置输送的电力的输送量 对应于供给燃料的燃烧区域的数量的电气设备。
