利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

22 条记录 (耗时 0.023 秒)

    Doubly-fed generator and doubly-fed electric machine
    8.
    发明授权
    Doubly-fed generator and doubly-fed electric machine 有权
    双馈发电机和双馈电机

    公开(公告)号：US08896261B2

    公开(公告)日：2014-11-25

    申请号：US13421259

    申请日：2012-03-15

    申请人： Akira Bando ,  Masaya Ichinose ,  Yasuhiro Kiyofuji ,  Yasuaki Nakayama

    发明人： Akira Bando ,  Masaya Ichinose ,  Yasuhiro Kiyofuji ,  Yasuaki Nakayama

    IPC分类号： H02P9/00 ,  H02J3/00 ,  H02P27/08

    CPC分类号： H02H7/065 ,  H02P9/007 ,  H02P9/102 ,  H02P2101/10 ,  H02P2101/15

    摘要： The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices.

    摘要翻译： 用于双馈电机的励磁过电流检测单元具有确定三相之间的励磁电流大小关系的功能。 点火脉冲保持在导通状态或截止状态，以通过二极管的操作使最大电流相位和第二大电流相位对直流电容器充电。 根据检测到的电流值控制第三大电流相位或最小电流相位的导通比，以防止跨越直流电容器的可能的短路。 当直流电容器的电压超过预设值时，通过操作有源或无源功率器件来抑制电压。

    DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faults
    9.
    发明授权
    DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faults 有权
    DC / AC电源转换器，由AC侧故障引起的直流侧双频脉动抑制

    公开(公告)号：US08867247B2

    公开(公告)日：2014-10-21

    申请号：US13420718

    申请日：2012-03-15

    申请人： Akira Bando ,  Yasuhiro Kiyofuji ,  Masaya Ichinose ,  Hiromitsu Sakai ,  Yasuhiro Imazu

    发明人： Akira Bando ,  Yasuhiro Kiyofuji ,  Masaya Ichinose ,  Hiromitsu Sakai ,  Yasuhiro Imazu

    IPC分类号： H02M7/5387 ,  H02M7/5395 ,  H02M1/14

    CPC分类号： H02M7/5395 ,  H02M1/14

    摘要： A commanded negative-sequence current is added to a commanded current so as to suppress double-frequency pulsation on the DC side. The commanded negative-sequence current is found from three values (i.e., the detected value of positive-sequence voltage vector on the power-supply side, the detected value of negative-sequence voltage vector, and a commanded positive-sequence current). Thus, the pulsations which occur on the DC side of a semiconductor power converter and which have a frequency double the power-supply frequency are suppressed even when the AC power supply is at fault while assuring stability of the current control system, thus permitting stable and continuous operation.

    摘要翻译： 对指令电流加上指令的负序电流，以抑制直流侧的双频脉动。 从三个值（即，电源侧的正序电压矢量的检测值，负序电压矢量的检测值，以及指令的正序电流）得到指令的负序电流。 因此，即使在交流电源故障的同时，即使在确保电流控制系统的稳定性的同时也抑制了在半导体功率转换器的DC侧产生的脉冲，并且其频率倍增了电源频率，因此允许稳定和 连续运行

    Doubly-Fed Generator and Doubly-Fed Electric Machine
    10.
    发明申请
    Doubly-Fed Generator and Doubly-Fed Electric Machine 有权
    双馈发电机和双馈电机

    公开(公告)号：US20130241463A1

    公开(公告)日：2013-09-19

    申请号：US13421259

    申请日：2012-03-15

    申请人： Akira Bando ,  Masaya Ichinose ,  Yasuhiro Kiyofuji ,  Yasuaki Nakayama

    发明人： Akira Bando ,  Masaya Ichinose ,  Yasuhiro Kiyofuji ,  Yasuaki Nakayama

    IPC分类号： H02P27/04

    CPC分类号： H02H7/065 ,  H02P9/007 ,  H02P9/102 ,  H02P2101/10 ,  H02P2101/15

    摘要： The excitation overcurrent detection unit for the doubly-fed electric machine is provided with a function to determine an excitation current magnitude relationship among three phases. The firing pulse is held to on-state or off-state to cause the largest-current phase and the second-largest-current phase to charge the DC capacitor by the operation of diodes. The conduction ratio of the third-largest-current phase or minimum current phase is controlled according to the detected current value to protect against a possible short-circuit across the DC capacitor. When the voltage of the DC capacitor exceeds a preset value, the voltage is suppressed by operating active or passive power devices.

    摘要翻译： 用于双馈电机的励磁过电流检测单元具有确定三相之间的励磁电流大小关系的功能。 点火脉冲保持在导通状态或截止状态，以通过二极管的操作使最大电流相位和第二大电流相位对直流电容器充电。 根据检测到的电流值控制第三大电流相位或最小电流相位的导通比，以防止跨越直流电容器的可能的短路。 当直流电容器的电压超过预设值时，通过操作有源或无源功率器件来抑制电压。