利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

154 条记录 (耗时 0.023 秒)

    METHOD TO DETECT OR MONITOR THE DEMAGNETIZATION OF A MAGNET
    4.
    发明申请
    METHOD TO DETECT OR MONITOR THE DEMAGNETIZATION OF A MAGNET 审中-公开
    检测或监测磁铁去磁的方法

    公开(公告)号：US20170030984A1

    公开(公告)日：2017-02-02

    申请号：US15163823

    申请日：2016-05-25

    申请人： SIEMENS AKTIENGESELLSCHAFT

    发明人： HENG DENG

    IPC分类号： G01R33/16 ,  F03D9/00 ,  F03D17/00

    CPC分类号： G01R33/16 ,  F03D9/255 ,  F03D17/00 ,  H02M5/458 ,  H02P9/48 ,  Y02E10/76

    摘要： A method to detect a decrease of the demagnetization of permanent magnets of the generator of a wind turbine, wherein a frequency converter is able to adapt to the variable frequency of the generator output voltage to the frequency of a power grid, wherein the AC/DC converter or the DC/AC converter of the frequency converter is been disabled, the electrical connections between the generator and the frequency converter are switched on via circuit breakers, the generator speed is determined; the generator output voltage is determined by a voltage sensor which is part of the frequency converter,the magnetic flux density of the generator is calculated depending on the generator speed and the generator output voltage, a demagnetization event is determined by comparing the resulting flux density value with a predetermined flux density value is provided.

    摘要翻译： 根据发电机转速和发电机输出电压来计算发电机的磁通密度，通过将所得到的磁通密度值与预定磁通密度值进行比较来确定退磁事件。

    WIND POWER CONVERTER DEVICE AND CONVERTER DEVICE
    6.
    发明申请
    WIND POWER CONVERTER DEVICE AND CONVERTER DEVICE 有权
    风力转换器装置和转换器装置

    公开(公告)号：US20160069327A1

    公开(公告)日：2016-03-10

    申请号：US14794844

    申请日：2015-07-09

    申请人： DELTA ELECTRONICS, INC.

    发明人： Chang-Yong WANG ,  Li CAI ,  Yan-Song LU

    IPC分类号： F03D9/00 ,  H02M1/00 ,  H02M1/42 ,  H02M5/44

    CPC分类号： H02M5/4505 ,  F03D9/255 ,  H02M5/45 ,  H02M5/452 ,  H02M5/4585 ,  H02M7/7575 ,  H02M2001/0077 ,  Y02E10/72 ,  Y02E10/76

    摘要： A wind power converter device is provided. The wind power converter device includes grid side converters, generator side converters and a DC bus module. Each of the grid side converters includes grid side outputs electrically coupled to a grid and a first and a second DC inputs. Each two of the neighboring grid side converters are connected in series at the second and the first DC inputs. Each of the generator side converters includes generator side inputs electrically coupled to a generator device and a first and a second DC outputs. Each two of the neighboring generator side converters are coupled in series at the second and the first DC outputs. The DC bus module is electrically coupled between the grid side converters and the generator side converters.

    摘要翻译： 提供风力发电变换装置。 风力发电装置包括电网侧转换器，发电机侧转换器和直流总线模块。 每个电网侧转换器包括电耦合到电网的电网侧输出和第一和第二DC输入。 每个两个相邻的电网侧转换器在第二个和第一个直流输入端串联连接。 每个发生器侧转换器包括电耦合到发电机装置的发电机侧输入和第一和第二DC输出。 相邻发生器侧转换器中的每两个在第二和第一直流输出端串联耦合。 DC总线模块电耦合在电网侧转换器和发电机侧转换器之间。

    Solar power conditioning unit
    7.
    发明授权
    Solar power conditioning unit 有权
    太阳能调压装置

    公开(公告)号：US09246397B2

    公开(公告)日：2016-01-26

    申请号：US14331194

    申请日：2014-07-14

    申请人： SolarCity Corporation

    发明人： Cuauhtemoc Rodriguez

    IPC分类号： H02M5/458 ,  H02M7/48 ,  H02M7/5387

    CPC分类号： H02M7/4807 ,  H02M5/458 ,  H02M7/53871 ,  Y02E10/56 ,  Y02E10/76 ,  Y10S323/906

    摘要： The present invention relates to a power conditioning unit for delivering power from a dc power source to an ac output, particularly ac voltages greater than 50 volts, either for connecting directly to a grid utility supply, or for powering mains devices independent from the mains utility supply. We describe a power conditioning unit for delivering power from a dc power source to an ac mains output, the power conditioning unit comprising an input for receiving power from said dc power source, an output for delivering ac power, an energy storage capacitor, a dc-to-dc converter having an input connection coupled to said input and an output connection coupled to the energy storage capacitor, and a dc-to-ac converter having an input connection coupled to said energy storage capacitor and an output connection coupled to said output, wherein said energy storage capacitor has a capacitance of less than twenty microfarads.

    摘要翻译： 本发明涉及一种功率调节单元，用于将功率从直流电源传输到交流输出，特别是大于50伏的交流电压，用于直接连接到电网公用电源，或用于为独立于电力公用设施的电力设备供电 供应。 我们描述了一个功率调节单元，用于将电力从直流电源传输到交流电源输出，功率调节单元包括用于从所述直流电源接收功率的输入端，用于输送交流电源的输出，储能电容器，直流 直流转换器，其具有耦合到所述输入的输入连接和耦合到所述能量存储电容器的输出连接;以及直流到交流转换器，其具有耦合到所述能量存储电容器的输入连接器和耦合到所述输出端的输出连接器 ，其中所述储能电容器具有小于20微法的电容。

    WIND TURBINE HAVING IMPROVED OVERVOLTAGE PROTECTION
    8.
    发明申请
    WIND TURBINE HAVING IMPROVED OVERVOLTAGE PROTECTION 有权
    具有改进的过压保护的风力涡轮机

    公开(公告)号：US20150333677A1

    公开(公告)日：2015-11-19

    申请号：US14713911

    申请日：2015-05-15

    申请人： Senvion SE

    发明人： Heinz-Hermann LETAS ,  Steffen PINGEL

    IPC分类号： H02P9/02 ,  F03D9/00

    CPC分类号： H02P9/02 ,  F03D9/255 ,  F03D9/257 ,  H02H7/1216 ,  H02J3/12 ,  H02J3/1885 ,  H02J3/386 ,  H02M1/32 ,  H02M1/42 ,  H02M5/458 ,  H02M2001/0064 ,  H02M2001/325 ,  Y02B70/12 ,  Y02E10/72 ,  Y02E10/76 ,  Y02E10/763 ,  Y02E40/32

    摘要： A wind turbine comprises a wind rotor, a generator driven by the wind rotor, a converter, wherein the generator and the converter generate electrical energy output via a connecting line with an inductively acting line reactor to a grid, and an overvoltage protection device comprising a plurality of different active modules, which are designed in such a way that they each effect, in different ways, a reduction in the voltage at the output of the converter, a switching matrix, which connects and disconnects the different active modules, and a selector comprising an overvoltage classifier, which is designed to select a predetermined stage depending on the overvoltage and to actuate the switching matrix in such a way that successive ones of the active modules are disconnected, wherein the overvoltage classifier defines a plurality of overvoltage ranges by virtue of in each case the selector setting different switching groups.

    摘要翻译： 风力涡轮机包括风力转子，由风力转子驱动的发电机，转换器，其中发电机和转换器通过与电感作用线路电抗器连接到电网的连接线路产生电能输出;以及过电压保护装置， 多个不同的有源模块被设计成使得它们各自以不同的方式影响转换器的输出处的电压的降低，连接和断开不同的有源模块的开关矩阵以及选择器 包括过电压分级器，其被设计为根据过电压选择预定级，并以使连续的有源模块断开的方式致动开关矩阵，其中过电压分级器由于以下原因定义了多个过电压范围 在每种情况下，选择器设置不同的开关组。

    AUTOMATED METHOD AND APPARATUS FOR TESTING A POWER CONVERTER
    9.
    发明申请
    AUTOMATED METHOD AND APPARATUS FOR TESTING A POWER CONVERTER 有权
    用于测试电源转换器的自动化方法和装置

    公开(公告)号：US20150309119A1

    公开(公告)日：2015-10-29

    申请号：US14260586

    申请日：2014-04-24

    申请人： General Electric Company

    发明人： Igor Berroteran Gil ,  Anthony Michael Klodowski ,  David Smith

    IPC分类号： G01R31/34

    CPC分类号： G01R31/42 ,  F03D17/00 ,  F05B2220/706 ,  G01R31/34 ,  H02H3/05 ,  H02H3/18 ,  H02H3/20 ,  H02H7/10 ,  H02M1/126 ,  H02M7/219 ,  H02M7/5387 ,  H02S50/10 ,  Y02E10/76

    摘要： A method and apparatus for testing operability of a power converter with an existing power conversion assembly of a renewable energy system is disclosed. The method includes transferring a first pulse of energy from an existing power conversion assembly to a power filter of the power converter through first cells within a bridge circuit of the power converter. Another step includes determining a first current-voltage feedback associated with the first pulse. A next step includes transferring a second pulse of energy from the power filter to the existing power conversion assembly through second cells within the bridge circuit such that a portion of the first pulse moves back to the existing power conversion assembly. Another step includes determining a second current-voltage feedback associated with the second pulse. The first and second current-voltage feedbacks are compared with nominal tolerances of the power converter to ensure the power converter is operating properly.

    摘要翻译： 公开了一种用于利用可再生能源系统的现有功率转换组件测试功率转换器的可操作性的方法和装置。 该方法包括通过功率转换器的桥式电路内的第一单元将来自现有功率转换组件的第一能量脉冲传送到功率转换器的功率滤波器。 另一步骤包括确定与第一脉冲相关联的第一电流 - 电压反馈。 下一步骤包括通过桥接电路内的第二单元将来自功率滤波器的第二能量脉冲转移到现有的功率转换组件，使得第一脉冲的一部分移回到现有的功率转换组件。 另一步骤包括确定与第二脉冲相关联的第二电流 - 电压反馈。 将第一和第二电流 - 电压反馈与功率转换器的标称公差进行比较，以确保功率转换器正常工作。

    SWITCHING STAGE, ENERGY CONVERSION CIRCUIT, AND CONVERSION STAGE FOR WIND TURBINES COMPRISING THE ENERGY CONVERSION CIRCUIT
    10.
    发明申请
    SWITCHING STAGE, ENERGY CONVERSION CIRCUIT, AND CONVERSION STAGE FOR WIND TURBINES COMPRISING THE ENERGY CONVERSION CIRCUIT 有权
    开关级，能量转换电路，以及包含能量转换电路的风力发电机组的转换阶段

    公开(公告)号：US20150295515A1

    公开(公告)日：2015-10-15

    申请号：US14648357

    申请日：2012-11-30

    申请人： INGETEAM POWER TECHNOLOGY S.A.

    发明人： Mikel ZABALETA MAEZTU ,  Jesus LOPEZ TABERNA ,  Eduardo BURGUETE ARCHEL

    IPC分类号： H02M7/72

    CPC分类号： H02M7/72 ,  H02M7/483 ,  H02M7/487 ,  H02M7/49 ,  Y02E10/76

    摘要： The present invention relates to an energy conversion circuit comprising a switching stage with a positive DC voltage terminal (1), a negative DC voltage terminal (3), m−1 intermediate DC voltage terminals (2) m DC bus capacitors (5);and p linked cells consisting of m+1 switches (9) and at least one capacitor (10), connecting cell 1 to the positive DC voltage terminal (1), negative DC voltage terminals (3) and intermediate DC voltage terminals (2); and a multilevel converter, the output of which is connected to the AC voltage terminal (4), with a positive voltage terminal (12) and a negative voltage terminal (14) of the multilevel converter and m−1 intermediate voltage terminals of the multilevel converter (13), which are connected to the positive output terminal of the switching stage (6), to the negative output terminal of the switching stage (8), and to the m−1 intermediate output terminals of the switching stage (7), respectively.

    摘要翻译： 本发明涉及能量转换电路，其包括具有正直流电压端子（1），负直流电压端子（3），直流母线电容器（2），直流母线电容器（5）的中间直流电压端子 以及由m + 1个开关（9）和至少一个电容器（10）组成的p个连接单元，将单元1连接到正的直流电压端子（1），负的直流电压端子（3）和中间直流电压端子（2） ; 以及多电平转换器，其输出端连接到交流电压端子（4），多电平转换器的正电压端子（12）和负电压端子（14）以及多电平的m-1个中间电压端子 转换器（13）连接到开关级（6）的正输出端子到开关级（8）的负输出端，以及与开关级（7）的m-1个中间输出端相连， ， 分别。