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    • 1. 发明专利
    • 電力変換器を備えた電力供給システム
    • 包括电源转换器的电源系统
    • JP2015047024A
    • 2015-03-12
    • JP2013177483
    • 2013-08-29
    • 株式会社日立製作所Hitachi Ltd
    • SUZUKI HIDEKAZUKAKUYA HIROMUNAKAHARA MITSUGI
    • H02J3/38H02J3/32H02M7/48
    • Y02E70/30
    • 【課題】発電システムと蓄電システムが直列接続されたシステムにおいて、電力変換器が故障した際に、システムの運転継続を実現することを目的とする。【解決手段】発電装置と、前記発電装置と直流側で接続された第一の電力変換器を有する発電システムと、交流側で直列接続された複数の第二の電力変換器と、前記複数の第二の電力変換器の直流側にそれぞれ接続した蓄電装置を有する蓄電システムと、前記発電システムと前記蓄電システムを制御する制御装置を備え、前記発電システムと、前記蓄電システムが直列接続された電力供給システムにおいて、前記蓄電システムと並列に接続したバイパス装置を有することを特徴とする電力供給システム。【選択図】図1
    • 要解决的问题:在发电系统和蓄电系统串联连接的系统中电源转换器发生故障时,实现系统的持续运行。解决方案:电源系统包括:发电系统包括 连接到直流侧的发电机的发电机和第一电力转换器; 所述蓄电系统包括在AC侧串联连接的多个第二功率转换器和分别连接到所述多个第二功率转换器的DC侧的存储单元; 以及用于控制发电系统和蓄电系统的控制装置,其中发电系统和蓄电系统相互连接。 电源系统还包括并联连接到蓄电系统的旁路装置。
    • 2. 发明专利
    • Concentration detecting system for fuel cell and fuel cell power generation system
    • 燃料电池和燃料电池发电系统浓度检测系统
    • JP2010153276A
    • 2010-07-08
    • JP2008331820
    • 2008-12-26
    • Hitachi Ltd株式会社日立製作所
    • NAKAHARA MITSUGIANDO SHINSUKENISHIMURA KATSUNORI
    • H01M8/04H01M8/06H01M8/10
    • Y02E60/523
    • PROBLEM TO BE SOLVED: To provide a concentration detecting system for a fuel cell for detecting more accurate fuel concentration by correcting the detection sensitivity of a fuel concentration detector varied by a by-product accompanying cell reaction, in the concentration detecting system for the fuel cell detecting the concentration of fuel supplied to the fuel cell.
      SOLUTION: The detection sensitivity of a concentration detector is corrected with high concentration liquid fuel in which fuel concentration is known, pure water, or low concentration liquid fuel, and the methanol fuel concentration of measuring object is measured based on the characteristics of the detecting sensitivity of the obtained fuel concentration. By this constitution, since the detecting sensitivity of the fuel concentration detector varied by the by-product attendant on the cell reaction is corrected, the concentration of the high concentration liquid fuel and methanol fuel diluted with pure water or low concentration liquid fuel supplied to a stack is accurately detected, and the stack generates electric power with the supplied fuel having adequate concentration.
      COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:为了提供一种用于燃料电池的浓度检测系统,用于通过校正由副产物伴随的电池反应而变化的燃料浓度检测器的检测灵敏度来检测更精确的燃料浓度,在浓度检测系统中 燃料电池检测供应到燃料电池的燃料的浓度。 解决方案:浓度检测器的检测灵敏度用已知燃料浓度的高浓度液体燃料,纯水或低浓度液体燃料进行校正,并且测量对象的甲醇燃料浓度基于 获得的燃料浓度的检测灵敏度。 通过这种结构,由于对由副产物伴随的电池反应而变化的燃料浓度检测器的检测灵敏度进行了校正,所以将用高纯度水或低浓度液体燃料稀释的高浓度液体燃料和甲醇燃料的浓度供给到 堆叠被精确地检测,并且堆叠产生具有足够浓度的供应燃料的电力。 版权所有(C)2010,JPO&INPIT
    • 3. 发明专利
    • Fuel battery separator
    • 燃油电池分离器
    • JP2010086695A
    • 2010-04-15
    • JP2008252166
    • 2008-09-30
    • Hitachi Ltd株式会社日立製作所
    • ANDO SHINSUKENAKAHARA MITSUGINISHIMURA KATSUNORI
    • H01M8/02H01M8/10H01M8/24
    • Y02E60/521
    • PROBLEM TO BE SOLVED: To provide a fuel battery capable of reducing the number of components and thinning. SOLUTION: In a fuel battery made by laminating one or more of a fuel battery unit cell in which an anode oxidizing fuel and a cathode reducing oxidant gas are formed through a proton conductive solid polymer film, a separator supplying the fuel and the oxidant gas to the fuel battery cells, and a sealing material for sealing the fuel and the oxidant gas, flow channels formed on the face of the separator are structured of three steps of a concave part, a convex part and a flat part of an intermediate height, and fluid flow paths are formed of a combination of the three steps of height. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供能够减少部件数量和变薄的燃料电池。 解决方案:在通过层叠一个或多个通过质子传导性固体聚合物膜形成阳极氧化燃料和阴极还原氧化剂气体的燃料电池单电池制成的燃料电池中,提供燃料和 氧化剂气体到燃料电池单元,以及用于密封燃料和氧化剂气体的密封材料,形成在隔板表面上的流动通道由中间体的凹部,凸部和平坦部分的三个步骤构成 高度和流体流动路径由三个高度台阶的组合形成。 版权所有(C)2010,JPO&INPIT
    • 5. 发明专利
    • Exhaust gas re-combustion plant and method for converting plant facility
    • 排气再燃烧设备和转炉设备的方法
    • JP2005194968A
    • 2005-07-21
    • JP2004003680
    • 2004-01-09
    • Hitachi Ltd株式会社日立製作所
    • YAMANAKA KAZUNORIMARUSHIMA SHINYAHIGUCHI SHINICHIKITSUKA NOBUAKINAKAHARA MITSUGITAKAHASHI HIROKAZU
    • F01K23/10F02C3/20F02C7/22
    • F02C3/20F01K23/10
    • PROBLEM TO BE SOLVED: To provide an exhaust gas re-combustion plant and a method for converting plant facility capable of cutting down power generation cost by re-powering an existing thermal power plant with minimum conversion to use reformed fuel as gas turbine fuel. SOLUTION: An existing steam turbine facility 100 is provided with a gas turbine facility 200, a high temperature high pressure water system 10 arranged by branching a feed water system 5 of the steam turbine facility 100 through a boiler 1, a branched fuel system 11 branching out of a fuel system 4 of the steam turbine facility 100, a reformer 300 reforming fuel for the boiler from the branched fuel system 11 by high temperature high pressure water from the high temperature high pressure water system 10, and a reformed fuel system 16 supplying a combustor 15 of the gas turbine facility 200 with fuel reformed by the reformer 300 as gas turbine fuel. COPYRIGHT: (C)2005,JPO&NCIPI
    • 要解决的问题:提供一种废气再燃设备和一种能够通过以最小转换重新供电现有火力发电厂来降低发电成本的工厂设备的方法,以使用重整燃料作为燃气轮机 汽油。 解决方案:现有的蒸汽轮机设备100设置有燃气轮机设备200,高温高压水系统10,其通过将蒸汽轮机设备100的给水系统5分别通过锅炉1,分支燃料 从蒸汽轮机设备100的燃料系统4分支出的系统11,从高温高压水系统10通过高温高压水从分支燃料系统11对用于锅炉的燃料进行重整的重整器300,以及重整燃料 为燃气轮机设备200的燃烧器15提供由重整器300重整的燃料作为燃气轮机燃料的系统16。 版权所有(C)2005,JPO&NCIPI
    • 6. 发明专利
    • 風力発電機の出力制御装置及び出力制御方法、並びに風力発電システム
    • 风力发电机输出控制装置及输出控制方法及风力发电系统
    • JP2015001212A
    • 2015-01-05
    • JP2013127078
    • 2013-06-18
    • 株式会社日立製作所Hitachi Ltd
    • NAKAHARA MITSUGISUMIYA HIROSHISUZUKI HIDEKAZU
    • F03D7/04
    • Y02E10/723
    • 【課題】風力発電装置の定格風速を超える高風速域において、発電機固定子回転数が過大とならない範囲で、風力エネルギーを有効に電気エネルギーに変換することを可能にする。【解決手段】風力タービンのタービン翼ピッチ角を制御するタービン翼ピッチ角制御手段93が、風力タービンのタービン回転数S1と、出力電力に応じたタービン回転数目標値S92との偏差に基づいて、タービン翼ピッチ角を制御し、発電機の励磁電流を制御することにより発電機の出力電力を制御する発電機電力制御手段92が、タービン回転数S1と、制限値を有するタービン回転数目標値S92との偏差に基づいて励磁電流を制御し、さらに、タービン翼ピッチ角制御手段が設定するタービン翼ピッチ角S93を、風速に応じて変更するピッチ角補正手段94を備える。【選択図】図2
    • 要解决的问题:在超过风力发电机的额定风速的高风速区域中,有效地将风力能量转换为发电机定子转速不会变得过大的范围内的电能。解决方案:在 用于风力发电机的输出控制装置:控制风力涡轮机的涡轮机叶片角度的涡轮叶片俯仰角控制装置93基于风的涡轮转速S1之间的偏差来控制涡轮叶片俯仰角 动力涡轮机和涡轮转速目标值S92根据输出功率; 通过控制发电机的励磁电流来控制发电机的输出功率的发电机功率控制装置92基于涡轮转速S1与具有限制值的涡轮转速目标值S92之间的偏差来控制励磁电流; 并且提供俯仰角校正装置94,用于根据风速改变由涡轮叶片俯仰角控制装置设定的涡轮叶片桨距角S93。
    • 7. 发明专利
    • Fuel container for fuel cell, fuel cell, fuel cell power supply device, and installing method of fuel cell at fuel container
    • 燃料电池,燃料电池,燃料电池装置的燃料容器和燃料容器的燃料电池的安装方法
    • JP2006108013A
    • 2006-04-20
    • JP2004295809
    • 2004-10-08
    • Hitachi Ltd株式会社日立製作所
    • TAKAHASHI KENNAKAHARA MITSUGITANAKA AKIRAKUBOTA OSAMUANDO SHINSUKE
    • H01M8/04H01M8/10
    • H01M8/04208H01M8/04186H01M8/1011Y02E60/523
    • PROBLEM TO BE SOLVED: To provide a fuel cell and a fuel container wherein whether a fuel housed in the fuel container is appropriate or not for the fuel cell is discriminated, and wherein connection of the fuel container can be physically made only when the fuel is appropriate. SOLUTION: This fuel container for the fuel cell is provided with a specific member for discriminating it according to methanol concentration of a methanol-mixed solution fuel housed in the container. Furthermore, the fuel cell is provided with a concentration judgement member for judging whether or not a member for discriminating the fuel concentration provided at the fuel container has a desired concentration. Furthermore, positioning pins are installed at the fuel container, and in the fuel cell, holes are provided into which the pins are inserted when the positioning pins are in a prescribed position. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:为了提供燃料电池和燃料容器,其中容纳在燃料容器中的燃料是否适合于燃料电池,并且其中燃料容器的连接可以仅在 燃料是适当的。 解决方案:该燃料电池用燃料容器设有用于根据容纳在容器中的甲醇混合溶液燃料的甲醇浓度来区分燃料电池的特定部件。 此外,燃料电池设置有浓度判定构件,用于判断用于区分设置在燃料容器上的燃料浓度的构件是否具有期望的浓度。 此外,定位销安装在燃料容器上,并且在燃料电池中,当定位销处于规定位置时,设置有插入销的孔。 版权所有(C)2006,JPO&NCIPI
    • 9. 发明专利
    • Fuel cell power supply system, and its operation method
    • 燃料电池系统及其操作方法
    • JP2009123383A
    • 2009-06-04
    • JP2007293330
    • 2007-11-12
    • Hitachi Ltd株式会社日立製作所
    • NAKAHARA MITSUGIANDO SHINSUKETANAKA AKIRATAKAHASHI HIROSHISUGANO MASAYOSHI
    • H01M8/04H01M8/10
    • Y02E60/523
    • PROBLEM TO BE SOLVED: To stably generate power by suppressing unnecessary heat generation in the power generating part of a fuel cell power supply system by a simple method.
      SOLUTION: The fuel cell power supply system includes: a fuel cell stack; a fuel tank to store a fuel solution having prescribed fuel concentration; a fuel supply pump for supplying the fuel solution to the fuel cell stack from the fuel tank; an air supply means for supplying air to the fuel cell stack; at least one of a temperature detecting element for detecting the temperature of the fuel cell stack and a voltage detecting element for detecting the output voltage of the fuel cell stack; a means for obtaining the fuel concentration of the fuel solution from the detected temperature and/or voltage; and a control device for controlling the fuel pump and/or the air supply means by reference to the fuel concentration found. In addition, the operation method of the fuel cell power supply system is disclosed.
      COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:通过简单的方法通过抑制燃料电池电源系统的发电部分中的不必要的热量来稳定地发电。 燃料电池电源系统包括:燃料电池组; 用于存储具有规定燃料浓度的燃料溶液的燃料箱; 燃料供给泵,用于从燃料箱向燃料电池堆提供燃料溶液; 用于向燃料电池堆提供空气的空气供应装置; 用于检测燃料电池堆的温度的温度检测元件和用于检测燃料电池堆的输出电压的电压检测元件中的至少一个; 从检测到的温度和/或电压获得燃料溶液的燃料浓度的装置; 以及用于参照所找到的燃料浓度来控制燃料泵和/或空气供给装置的控制装置。 此外,公开了燃料电池供电系统的运转方法。 版权所有(C)2009,JPO&INPIT
    • 10. 发明专利
    • Air cooling system and gas turbine power generation system
    • 空气冷却系统和气体发电系统
    • JP2003279215A
    • 2003-10-02
    • JP2002080395
    • 2002-03-22
    • Hitachi Ltd株式会社日立製作所
    • ARAKI HIDEFUMINAKAHARA MITSUGICHINO KOICHI
    • F02C7/143F25D3/10F28D1/06F28D7/16
    • PROBLEM TO BE SOLVED: To provide an air cooling system wherein the economical efficiency is enhanced, while restraining increase in pressure loss.
      SOLUTION: A heat exchanger system for cooling air includes a first heat exchanger system and a second heat exchanger system, the first heat exchanger system is composed of heat exchangers 70a, b, and the second heat exchanger system is composed of a heat exchanger 71. A heat exchanger 70 is switched between defrosting operation and cooling operation by a four-way valve 72, the air passages of the heat exchangers 70a, b are connected in series, and the passages of an LNG are connected in parallel. In the first heat exchanger system, air is cooled to -40 to -70°C, and in the second heat exchanger 71, the air is cooled to about -130°C.
      COPYRIGHT: (C)2004,JPO
    • 要解决的问题:提供一种在抑制压力损失增加的同时提高经济效率的空气冷却系统。 解决方案:用于冷却空气的热交换器系统包括第一热交换器系统和第二热交换器系统,第一热交换器系统由热交换器70a,b组成,第二热交换器系统由热量 热交换器70通过四通阀72在除霜运转和制冷运转之间切换,热交换器70a,b的空气通路串联连接,LNG的通路并联连接。 在第一热交换器系统中,将空气冷却至-40至-70℃,并且在第二热交换器71中,将空气冷却至约-130℃。 版权所有(C)2004,JPO