会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 92. 发明专利
    • Target for image pickup tube
    • 图像抽吸管目标
    • JPS5780637A
    • 1982-05-20
    • JP15708480
    • 1980-11-10
    • Hitachi LtdNippon Hoso Kyokai
    • NONAKA IKUMITSUINOUE SHIGENORISHIDARA KEIICHITANIOKA KENKICHI
    • H01J29/45H01L31/08
    • H01J29/456
    • PURPOSE: To improve highlight sticking by doping fluoride to an Se-As-Te photoconductive film at a specified dope concentration and from the side of the light incident surface to the specified depth.
      CONSTITUTION: An N type transparent electrode 3 consisting of a transparent electrode 2 whose principal component is SnO
      2 and CeO
      2 is formed on a glass substrate 1. Besides, a photoconductive film 4 (Se: 94wt%, As: 6wt%, T
      1 = 30nm) of an Se-As P type noncrystal semiconductor, photoconductive film 5 (Se: 64wt%, As: 3wt%, Te: 33wt%, T
      2 =60nm) of an Se-As-Te noncrystal semiconductor, and photoconductive film 7 (Se: 72→97wt%, As: 28→3wt%, T
      3 =60nm) of an Se-As P type noncrystal semiconductor are formed on it. An LiF dope layer 6(LiF: 0.4± 0.1wt%, T
      3 = 60±6nm) is formed on the region of the photoconductive films 4 and 5. As a result, image pickup current is raised and highlight sticking is improved.
      COPYRIGHT: (C)1982,JPO&Japio
    • 目的:通过以特定的浓度浓度和从光入射表面一侧到指定深度,将氟化物掺杂到Se-As-Te光电导膜来改善高光斑。 构成:在玻璃基板1上形成由主要成分为SnO 2和CeO 2的透明电极2构成的N型透明电极3.此外,光导膜4(Se:94重量%,As:6重量%,T1 = 30nm) 的Se-As-Te非晶体半导体,Se-As-Te非晶体半导体的光电导膜5(Se:64重量%,As:3重量%,Te:33重量%,T2 = 60nm)和感光膜7(Se: 在其上形成Se-As P型非晶半导体的72 97重量%,As:28 3重量%,T3 = 60nm)。 在感光膜4和5的区域上形成LiF掺杂层6(LiF:0.4+或-0.1重量%,T3 = 60+或-6nm)。结果,摄像电流升高,突出显示粘附 改进。
    • 93. 发明专利
    • Power conversion device
    • 电源转换器件
    • JP2014140298A
    • 2014-07-31
    • JP2014048316
    • 2014-03-12
    • Hitachi Ltd株式会社日立製作所
    • INOUE SHIGENORIKATO SHUJI
    • H02M7/12H02M7/48
    • PROBLEM TO BE SOLVED: To provide a power conversion device dispensing with a reactor and capable of reducing its volume and weight, the power conversion device being configured by cascading unit converters for linking to a utility grid via a transformer.SOLUTION: Provided is a power conversion device 101 for linking to a three-phase utility grid 100 via a transformer 105 and delivering and receiving effective or reactive power to and from the three-phase utility grid, characterized in that the secondary winding of the transformer is made to be an open winding having six terminals, with a first converter group 112 comprising a circuit of three start-connected converter arms being connected to three terminals of the secondary winding and a second converter group 116 comprising a circuit of three other star-connected converter arms being connected to three terminals of the secondary winding, and each of the neutral point (star-connected point) of the first converter group and the neutral point (star-connected point) of the second converter group is made to be an output terminal of the power conversion device.
    • 要解决的问题:为了提供分配反应堆并且能够减小其体积和重量的功率转换装置,该功率转换装置通过级联单元转换器来配置,以通过变压器连接到公用电网。解决方案:提供一种电力 转换装置101,用于经由变压器105连接到三相公用电网100,并向三相公用电网输送和接收有效或无功功率,其特征在于,使变压器的次级绕组为开路 具有六个端子的绕组,第一转换器组112包括连接到次级绕组的三个端子的三个起动连接的转换器臂的电路和包括三个其他星形连接的转换器臂的电路的第二转换器组116,其连接到 次级绕组的三个端子和第一转换器组的中性点(星形连接点)和中性点 将第二转换器组的点(星形连接点)设为电力转换装置的输出端子。
    • 94. 发明专利
    • Power conversion apparatus and power conversion method
    • 功率转换装置和功率转换方法
    • JP2014096969A
    • 2014-05-22
    • JP2012248626
    • 2012-11-12
    • Hitachi Ltd株式会社日立製作所
    • NAGATOME MASAKAZUEGUCHI YOSHIOICHINOSE MASAYAYAMAMOTO TAKAYOSHIINOUE SHIGENORI
    • H02M7/12H02M7/48H02M7/501
    • H02M7/5395H02M2007/4835
    • PROBLEM TO BE SOLVED: To provide a power conversion apparatus capable of reducing harmonic waves, and a power conversion method.SOLUTION: A power conversion apparatus 102 comprises a φ command section 402 which outputs a phase difference φ between a P-side arm and an N-side arm in accordance with the cases where M is an odd number and an even number; aθk commanding device 403 which designates a phase difference command valueθk in such a manner that carrier phases of unit converters of the arms are deviated by 2π/M every time in accordance with a position (k) of the unit converter within the arm; a carrier wave generation section 404 which generates a carrier wave; and a gate pulse generation section 312 which generates a gate pulse by comparing magnitudes of a corresponding modulation wave and the carrier wave for each unit converter. In accordance with the cases where M is an odd number and an even number, the φ commanding device 402 sets the phase difference φ between the carrier wave of the P-side arm and the carrier wave of the N-side arm, such that output voltage pulses of the P-side arm and the N-side arm are deviated.
    • 要解决的问题:提供能够减少谐波的电力转换装置和电力转换方法。电力转换装置102包括电力转换装置102。 命令部402,其输出相位差&phgr; 根据M是奇数和偶数的情况,在P侧臂和N侧臂之间; k指令装置403,其以每个单位转换器的载波相位根据单位转换器的位置(k)每次偏移2&pgr / M的方式指定相位差指令值& k; 手臂; 产生载波的载波生成部404; 以及栅极脉冲生成部312,其通过将各调制波的幅度与各单位转换器的载波进行比较来生成栅极脉冲。 根据M是奇数和偶数的情况, 指令装置402设定相位差&phgr; 在P侧臂的载波和N侧臂的载波之间,使得P侧臂和N侧臂的输出电压脉冲偏离。
    • 95. 发明专利
    • POWER CONVERSION DEVICE
    • JP2013255422A
    • 2013-12-19
    • JP2013164672
    • 2013-08-08
    • HITACHI LTD
    • NARUSHIMA JUNKATO SHUJIKATO TETSUYAINOUE SHIGENORI
    • H02M7/48H02M7/49
    • PROBLEM TO BE SOLVED: To reduce an information amount communicated between a central controller and each of a plurality of cells using semiconductor switching elements in controlling a power conversion device constructed by connecting the plurality of cells in a cascade manner, in order to solve the problem of increase in the information amount of communication, which is required for the control between the plurality of the cells and the central controller, and a load of information processing caused by increase in the number of the cells.SOLUTION: A power conversion device comprising a plurality of arms composed of a plurality of cells connected in a cascade manner includes a function for supplying power to a cell controller, which configures the cell and communicates with a central controller, from a main circuit. In the power conversion device, the main circuit supplies power to a cell controller of each cell. Thereby, a failure at a main component in each cell interrupts communication with a cell controller in the cell, which enables the central controller to recognize the failure in the cell.
    • 97. 发明专利
    • Power converter, dc substation, dc power transmission system and control method of power converter
    • 电力转换器,直流基站,直流电力传输系统和电力转换器的控制方法
    • JP2013169088A
    • 2013-08-29
    • JP2012031235
    • 2012-02-16
    • Hitachi Ltd株式会社日立製作所
    • KATO SHUJIITO NAOTOTSUKAHARA MASAHISAOCHI KENTAROINOUE SHIGENORISAKURAMORI FUSAOIGARASHI DAISUKE
    • H02M7/48H01L25/11
    • H01L2924/0002H02M1/32H02M2007/4835H01L2924/00
    • PROBLEM TO BE SOLVED: To suppress and prevent blowout of a conductor wire and arc generation, by reducing a current flowing from a DC capacitor into an IGBT leg upon short circuit of a semiconductor leg.SOLUTION: In the power converter having an arm configured of one or a plurality of unit converters in cascade connection, the unit converter has a main circuit of chopper configuration where semiconductor legs are connected with a DC capacitor. At least some semiconductor legs have a semiconductor module, and a pressure thyristor is connected in parallel with the DC capacitor. Inductance (LS) of a discharge path from the DC capacitor via the pressure thyristor is small and satisfies the following conditions, so that a current having a current rise rate higher than the current rise rate tolerance of the pressure thyristor can be fed when the pressure thyristor is turned on. LS
    • 要解决的问题:通过在半导体支脚短路时减少从直流电容器流向IGBT支脚的电流来抑制和防止导线的发生和电弧产生。解决方案:在具有臂的电力转换器由 一个或多个串联连接的单元转换器,单元转换器具有斩波器配置的主电路,其中半导体支路与直流电容器连接。 至少一些半导体支架具有半导体模块,并且压力晶闸管与直流电容器并联连接。 通过压力晶闸管的来自直流电容器的放电路径的电感(LS)小,满足以下条件,从而当压力可控硅的电压上升速率高于压力晶闸管的电流上升速率容限时,可以馈送电流 晶闸管导通。 LS <直流电容器额定电压/电流上升速率公差的压力可控硅。
    • 98. 发明专利
    • Power converter
    • 电源转换器
    • JP2013121223A
    • 2013-06-17
    • JP2011267453
    • 2011-12-07
    • Hitachi Ltd株式会社日立製作所
    • INOUE SHIGENORIKATO SHUJI
    • H02M7/497H02M7/12H02M7/48
    • H02M7/10H02M1/32H02M7/483H02M2001/0003H02M2001/0064H02M2007/4835
    • PROBLEM TO BE SOLVED: To solve such problems that since all unit converters of MMCC-DSBC are full-bridge circuits, about twice as many switching elements are required when compared with the MMCC-DSBC where all unit converters are bidirectional chopper circuits, and since the number of switching elements of flow is also doubled, the loss is doubled when compared with the MMCC-DSBC.SOLUTION: The power converter consists of a parallel connection of at least two legs, each consisting of a series connection of a first arm consisting of a series connection of at least two unit converters and a second arm consisting of a series connection of a first reactor, a second reactor and at least two unit converters. The joint of first and second reactors serves as an AC terminal, and the parallel joint of at least two legs connected in parallel serves as a DC terminal. The first and second arms consist of at least two types of unit converter, i.e., a first type unit converter capable of outputting a unipolar voltage and a second type unit converter capable of outputting a bipolar voltage.
    • 要解决的问题:为了解决这样的问题,由于MMCC-DSBC的所有单元转换器都是全桥电路,所以与MMCC-DSBC相比,所有单元转换器都是双向斩波电路所需的开关元件的大约是两倍 ,并且由于流量的开关元件的数量也增加了一倍,所以与MMCC-DSBC相比,损耗增加了一倍。 解决方案:功率转换器由至少两个支路的并联连接器组成,每个支路由包括至少两个单元转换器的串联连接的第一臂的串联连接和由至少两个单元转换器的串联连接构成的第二臂组成, 第一反应器,第二反应器和至少两个单元转换器。 第一和第二反应器的接头用作AC端子,并联连接的至少两个支脚的平行接头用作DC端子。 第一和第二臂由至少两种类型的单位转换器,即能够输出单极性电压的第一类型单位转换器和能够输出双​​极性电压的第二类型单位转换器构成。 版权所有(C)2013,JPO&INPIT
    • 99. 发明专利
    • Power conversion device
    • 电源转换器件
    • JP2013099054A
    • 2013-05-20
    • JP2011238160
    • 2011-10-31
    • Hitachi Ltd株式会社日立製作所
    • INOUE SHIGENORIKATO SHUJIEGUCHI YOSHIO
    • H02M7/25
    • PROBLEM TO BE SOLVED: To solve the problem in conventional technology by which an MMCC-DSCC transformer and a reactor are integrated into one by using a zigzag connection transformer, that to obtain a predetermined voltage in the secondary winding of a transformer, it was necessary to increase the winding about 15% over a Y or a Δ wire connection.SOLUTION: A power conversion device of the present invention comprises: at least three windings including a first, a second and a third winding; and a first and a second arm, each consisting of at least one or more serial bodies of 2-terminal circuit elements equipped with an energy storage element. The power conversion device includes at least one circuit in which the second winding and the first arm constitute a first serial body, and the third winding and the second arm constitute a second serial body, the first and the second serial bodies being connected in series, and in which the first, the second and the third windings are magnetically coupled so that the magnetomotive forces of the second and the third windings will have polarities opposite to each other.
    • 要解决的问题为了解决通过使用锯齿形连接变压器将MMCC-DSCC变压器和电抗器整合到一体的传统技术中的问题,为了在变压器的次级绕组中获得预定的电压, 需要通过Y或Δ线连接增加约15%的绕组。 解决方案:本发明的电力转换装置包括:包括第一,第二和第三绕组的至少三个绕组; 以及第一臂和第二臂,每个由至少一个或多个配备有能量存储元件的2端电路元件串联体组成。 电力转换装置包括至少一个电路,其中第二绕组和第一臂构成第一串联体,第三绕组和第二臂构成第二串联体,第一和第二串联体串联连接, 并且其中第一,第二和第三绕组被磁耦合,使得第二和第三绕组的磁动势具有彼此相反的极性。 版权所有(C)2013,JPO&INPIT
    • 100. 发明专利
    • Power conversion equipment
    • 电力转换设备
    • JP2013055885A
    • 2013-03-21
    • JP2012278821
    • 2012-12-21
    • Hitachi Ltd株式会社日立製作所
    • NARUSHIMA JUNKATO SHUJIKATO TETSUYAINOUE SHIGENORI
    • H02M7/12
    • PROBLEM TO BE SOLVED: To provide a function of preventing overcurrent discharge from DC capacitors (energy storage elements) to DC lines in a power converter for tentatively converting AC power to DC power and transmitting it from one AC system to the other AC system, or in a DC power transmission system.SOLUTION: In power conversion equipment for converting the AC power in the AC system to the DC power, a function is provided to control a current flowing to the DC line of the power conversion equipment by the power conversion equipment having a function of electrically insulating the DC line and the energy storage element of the power conversion equipment. The power conversion equipment of the present invention and the DC power transmission system prevent an excessive current from flowing to the DC lines without discharging electric charges of the energy storage element of the power conversion equipment when the DC line is short-circuited.
    • 要解决的问题:为了提供在电力转换器中防止从DC电容器(能量存储元件)到DC线路的过电流放电的功能,用于将AC电力暂时转换为DC电力并将其从一个AC系统传输到另一个AC 系统或直流电力传输系统。

      解决方案:在用于将AC系统中的AC电力转换为DC电力的电力转换设备中,提供功能,以通过具有功能的功率转换设备来控制流入电力转换设备的DC线路的电流 对电力转换设备的直流线路和能量存储元件进行电绝缘。 本发明的电力变换装置和直流电力传输系统,在直流线路短路时,不会使电力转换装置的蓄电元件的电荷放电,从而防止过电流流向直流线路。 版权所有(C)2013,JPO&INPIT