利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

29 条记录 (耗时 0.015 秒)

    POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING SAME
    21.
    发明公开
    POWER CONVERSION DEVICE AND METHOD FOR CONTROLLING SAME 审中-公开
    STROMWANDLERVORRICHTUNG UND VERFAHREN ZUR STEUERUNG DAVON

    公开(公告)号：EP3059653A4

    公开(公告)日：2017-06-21

    申请号：EP13895714

    申请日：2013-10-15

    申请人： TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP

    发明人： MATSUOKA YUJI ,  AMBO TATSUAKI

    IPC分类号： G05F1/70 ,  H02J3/18 ,  H02J3/38

    CPC分类号： H02J7/35 ,  H02J3/1842 ,  H02J3/28 ,  H02J3/383 ,  H02M3/33507 ,  H02M7/48 ,  Y02E10/563 ,  Y02E10/566 ,  Y02E40/22

    摘要： According to one embodiment, a power conversion device includes a smoothing capacitor, an input voltage detection unit, a power conversion unit, and a controller. The smoothing capacitor is adapted to smooth a direct-current input voltage input from a direct-current power source. The input voltage detection unit is adapted to detect a voltage value of the input voltage. The power conversion unit is adapted to convert a direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to output the alternating-current voltage to a power system. The controller is adapted to control a conversion in the power conversion unit. The controller has a first operation mode of outputting active power to the power system when the voltage value detected by the input voltage detection unit is one of equal to and higher than a determination value, has a second operation mode of outputting reactive power to the power system when the voltage value is lower than the determination value, determines whether or not the voltage value is one of equal to and higher than the determination value, and makes a transition from the first operation mode to the second operation mode within a predetermined time from a time point when it is determined that the voltage value is lower than the determination value.

    摘要翻译： 根据一个实施例，电力转换装置包括平滑电容器，输入电压检测单元，电力转换单元和控制器。 平滑电容器适于平滑从直流电源输入的直流输入电压。 输入电压检测单元适于检测输入电压的电压值。 功率转换单元适于将由平滑电容器平滑的直流电压转换成交流电压，以将交流电压输出到电力系统。 控制器适用于控制功率转换单元中的转换。 控制器具有当输入电压检测单元检测到的电压值等于或高于确定值中的一个时向电力系统输出有功功率的第一操作模式，具有向电力输出无功功率的第二操作模式 系统在电压值低于判定值的情况下判定电压值是否等于和高于判定值中的一个，并且在预定时间内从第一操作模式转换到第二操作模式 在确定电压值低于确定值的时间点。

    POWER CONVERSION DEVICE
    22.
    发明公开
    POWER CONVERSION DEVICE 审中-公开
    STROMWANDLER

    公开(公告)号：EP3163729A1

    公开(公告)日：2017-05-03

    申请号：EP15815326

    申请日：2015-04-21

    申请人： MITSUBISHI ELECTRIC CORP ,  TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP

    发明人： KOYANAGI KIMIYUKI ,  JIMICHI TAKUSHI ,  SHINOMIYA YASUHIRO ,  TSUCHIYA TAICHIRO

    IPC分类号： H02M1/00

    CPC分类号： H02M3/158 ,  H02M1/32 ,  H02M2001/0006 ,  H02M2001/325 ,  H02M2007/4835

    摘要： This power conversion device is provided with an energy storage unit (5) which receives and stores voltage of a self-power-feeding device (3); and a bypass unit drive device (6) which, when a voltage of the self-power-feeding device (3) becomes smaller than a predetermined lower limit value, causes a bypass unit (4) to perform a short-circuiting operation by power stored in the energy storage unit (5). Thus, by appropriately setting the above voltage lower limit value as a threshold value for the short-circuiting operation, it becomes possible to swiftly and reliably perform a short-circuiting protection operation even if a cell converter (100a) has failed. Thus it is possible to always safely continue the operation of the power conversion device.

    摘要翻译： 该电力转换装置具有接收并存储自供电装置（3）的电压的能量存储单元（5）。 和旁路单元驱动装置（6），当自供电装置（3）的电压变得小于预定的下限值时，旁路单​​元（4）通过电力执行短路操作 存储在能量存储单元（5）中。 因此，通过适当地设定上述电压下限值作为短路操作的阈值，即使电池转换器（100a）发生故障，也能够迅速且可靠地执行短路保护操作。 因此可以始终安全地继续功率转换装置的操作。

    CONTROL DEVICE FOR SOLAR POWER GENERATION INVERTER
    23.
    发明公开
    CONTROL DEVICE FOR SOLAR POWER GENERATION INVERTER 审中-公开
    控制装置太阳能发电逆变器

    公开(公告)号：EP3026775A4

    公开(公告)日：2017-03-29

    申请号：EP13889814

    申请日：2013-07-23

    申请人： TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP

    发明人： MATSUOKA YUJI ,  INZUNZA FIGUEROA RUBEN ALEXIS ,  AMBO TATSUAKI

    IPC分类号： H02J3/38 ,  H02M7/537

    CPC分类号： H02M7/537 ,  H02J3/1842 ,  H02J3/385 ,  Y02E10/58 ,  Y02E40/22

    摘要： A control apparatus (2) for an inverter (1) detects an output voltage deficiency of the inverter (1) based on a system voltage (Vr) of an AC power system (7) and a DC voltage (Vdc) applied to the inverter (1), detects distortion of an output current (Iiv) based on a harmonic included in the output current (Iiv), performs maximum power point tracking control on the inverter (1), and controls to set the DC voltage (Vdc) applied to the inverter (1) to a voltage at a power point less than a maximum power point (Pmpp) of the maximum power point tracking control when the output voltage deficiency (Viv) is detected and the distortion of the output current (Iiv) is detected.

    ELECTRICITY CONVERSION DEVICE
    24.
    发明公开
    ELECTRICITY CONVERSION DEVICE 审中-公开
    ELEKTRIZITÄTSUMWANDLUNGSVORRICHTUNG

    公开(公告)号：EP2611021A4

    公开(公告)日：2017-03-29

    申请号：EP10856387

    申请日：2010-08-23

    申请人： TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP

    发明人： FUJII YOSUKE ,  IKAWA EIICHI ,  AMBOH TATSUAKI

    IPC分类号： H02M7/487 ,  H02J3/38 ,  H02M7/5395

    CPC分类号： H02M7/487 ,  H02J3/24 ,  H02J3/383 ,  H02M7/5395 ,  Y02E10/563

    摘要： There is provided a power conversion apparatus including a power converter being so configured that an alternating-current switch constituted of a series connection of two valve devices each constituted of a semiconductor element and a diode connected in inverse parallel with the semiconductor element is connected between a connection point of the valve devices and a connection point of the direct-current power supplies in each arm, and each of the alternating-current switches is turned on or off, thereby enabling the power converter to perform three-level operation or two-level operation. The power conversion apparatus includes a comparison circuit (9) which compares a determination element related to a loss in the power converter with a switching reference value and outputs a determination instruction when a difference has occurred between the determination element and the switching reference value, a determination circuit (11) which determines whether the determination element is greater or less than the switching reference value when having received a determination instruction from the comparison circuit (9), and outputs a two-level operation switching instruction when the determination element is greater than or equal to the switching reference value, and a switching circuit (12) which, when having received a two-level operation switching instruction from the determination circuit (11), turns off the alternating-current switch and turns on the valve devices in the arm sequentially, thereby bringing the power converter into a two-level operation state.

    摘要翻译： 提供了一种电力转换装置，其包括功率转换器，该功率转换器被构造成使得由半导体元件和与半导体元件反向并联连接的二极管的两个阀装置的串联连接构成的交流开关连接在 阀装置的连接点和每个臂中的直流电源的连接点，并且每个交流开关被接通或断开，从而使电力转换器能够执行三电平操作或两级 操作。 功率转换装置包括比较电路（9），其将与功率转换器的损耗有关的确定元件与开关基准值进行比较，并且当确定元件和开关基准值之间出现差异时，输出确定指令， 确定电路（11），其在从所述比较电路（9）接收到确定指示时，判定所述判定元件是否大于或小于所述切换基准值，并且当所述判定元件大于所述判定元件时，输出二电平动作切换指示 或者等于开关基准值的开关电路（12），当接收到来自判定电路（11）的二电平动作切换指示时，断开交流开关，并将该装置接通 从而使功率转换器进入两级操作状态。

    SPEED-SENSORLESS MOTOR CONTROL DEVICE AND METHOD FOR STARTING SPEED-SENSORLESS MOTOR
    25.
    发明公开
    SPEED-SENSORLESS MOTOR CONTROL DEVICE AND METHOD FOR STARTING SPEED-SENSORLESS MOTOR 审中-公开
    控制装置的电机无速度传感器和方法用于启动无速度传感器

    公开(公告)号：EP2963801A4

    公开(公告)日：2017-01-18

    申请号：EP14756901

    申请日：2014-02-26

    申请人： TOKYO INST TECH ,  TOSHIBA MITSUBISHI-ELECTRIC IND SYSTEMS CORP

    发明人： AKAGI HIROFUMI ,  HAGIWARA MAKOTO

    IPC分类号： H02P1/30 ,  H02M7/49 ,  H02P6/21 ,  H02P21/00 ,  H02P27/04

    CPC分类号： H02P6/21 ,  H02M2007/4835 ,  H02P1/30

    摘要： A speed sensorless motor starting apparatus (100) for starting a motor includes a modular multilevel cascade inverter (1) of a double star chopper cell, a current command value creation unit (31) configured to create a current command value by using an amplitude command value and a frequency command value increased from 0 to a prescribed value over a predetermined period of time, and a motor start control unit (32) configured to start the motor by performing control so that a motor driving current output from the modular multilevel cascade inverter (1) to the motor can follow the current command value.

    摘要翻译： 用于起动电机的无速度传感器电动机的起动装置（100）包括模块化多级级联逆变器（1）一个双星斩波细胞，经配置的电流指令值生成部（31）通过使用在振幅指令创建的电流指令值 配置为通过执行控制以起动发动机值和在预定的时间周期从0增加到一预定值的频率指令值，以及电机启动控制装置（32），这样做了电动机驱动电流输出从所述模块化多电平级联反相器 （1）向电动机可以按照电流指令值。