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22 条记录 (耗时 0.021 秒)

    Doubly-fed generator and doubly-fed electric machine
    1.
    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。

    Doubly-Fed Generator and Doubly-Fed Electric Machine
    2.
    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。

    DC/AC power converter with DC side double frequency pulsation suppression caused by AC side faults
    3.
    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

    Semiconductor Power Conversion Apparatus
    4.
    发明申请
    Semiconductor Power Conversion Apparatus 有权
    半导体电源转换装置

    公开(公告)号：US20120170333A1

    公开(公告)日：2012-07-05

    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： H02M7/537

    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

    Phase synchronization system for connecting a power converter to a power distribution system
    5.
    发明授权
    Phase synchronization system for connecting a power converter to a power distribution system 有权
    用于将功率转换器连接到配电系统的相位同步系统

    公开(公告)号：US06304468B2

    公开(公告)日：2001-10-16

    申请号：US09748268

    申请日：2000-12-27

    申请人： Masaya Ichinose ,  Motoo Futami ,  Shigeta Ueda ,  Kazuo Suzuki ,  Akira Maekawa ,  Yasuhiro Kiyofuji

    发明人： Masaya Ichinose ,  Motoo Futami ,  Shigeta Ueda ,  Kazuo Suzuki ,  Akira Maekawa ,  Yasuhiro Kiyofuji

    IPC分类号： H02H7122

    CPC分类号： H02J3/32 ,  Y10T307/735

    摘要： A power converter system includes: a circuit breaker having one terminal connected to a power system and another terminal connected to a load; a transformer for interconnection; a power converter; and a controller for controlling the power converter, wherein, during a return to grid connected operation, the power converter is controlled such that the phase of an output voltage of the power converter matches the phase of the system voltage, and the circuit breaker is closed, so as to prevent an overcurrent during a changeover from the self commutated operation to the grid connected operation of the power converter.

    摘要翻译： 一种电力转换器系统，包括：一个断路器，其一个端子连接到电力系统，另一个端子连接到负载; 互连变压器 电源转换器; 以及用于控制所述功率转换器的控制器，其中，在返回并网运行期间，所述功率转换器被控制为使得所述功率转换器的输出电压的相位与所述系统电压的相位匹配，并且所述断路器闭合 ，以防止在从自整换操作切换到电力转换器的电网连接操作期间的过电流。

    CONTROL APPARATUS AND CONTROL METHOD
    9.
    发明申请
    CONTROL APPARATUS AND CONTROL METHOD 有权
    控制装置和控制方法

    公开(公告)号：US20100174967A1

    公开(公告)日：2010-07-08

    申请号：US12652773

    申请日：2010-01-06

    申请人： Satoru Funaki ,  Yasuhiro Kiyofuji ,  Masashi Suenaga ,  Shin Kokura ,  Eiji Kobayashi ,  Akihiro Onozuka ,  Yusuke Seki ,  Toshiki Shimizu ,  Yukiko Tahara ,  Yuta Sugimoto

    发明人： Satoru Funaki ,  Yasuhiro Kiyofuji ,  Masashi Suenaga ,  Shin Kokura ,  Eiji Kobayashi ,  Akihiro Onozuka ,  Yusuke Seki ,  Toshiki Shimizu ,  Yukiko Tahara ,  Yuta Sugimoto

    IPC分类号： H03M13/05 ,  G06F11/10

    CPC分类号： G06F11/1008 ,  H03M13/09

    摘要： A failure is detected immediately and certainly, and continuation of processing in an unstable state is prevented. A first error detection code is generated from first information which is output as a result of execution of a predetermined program conducted by a first processor. A second error detection code is generated from second information which is output as a result of execution of the program conducted by a second processor which is configured so as to output the same computation result as that of the first processor. It is detected whether the first information is the same as the second information, and it is detected whether the first error detection code is the same as the second error detection code. Writing the first information or the second information into a main memory is controlled on the basis of a result of the detection.

    摘要翻译： 立即且肯定地检测到故障，并且防止处于不稳定状态的处理的继续。 作为执行由第一处理器执行的预定程序的结果而输出的第一信息产生第一错误检测码。 从作为由第二处理器执行的程序的执行结果输出的第二信息生成第二错误检测码，该第二处理器被配置为输出与第一处理器相同的计算结果。 检测第一信息是否与第二信息相同，并且检测第一错误检测码是否与第二错误检测码相同。 基于检测结果来控制将第一信息或第二信息写入主存储器。

    Power converting device and method for controlling the same
    10.
    发明授权
    Power converting device and method for controlling the same 有权
    电力转换装置及其控制方法

    公开(公告)号：US07643317B2

    公开(公告)日：2010-01-05

    申请号：US11964274

    申请日：2007-12-26

    申请人： Shuji Katoh ,  Yasuhiro Kiyofuji ,  Shoichiro Koseki ,  Tomomichi Ito ,  Motoo Futami

    发明人： Shuji Katoh ,  Yasuhiro Kiyofuji ,  Shoichiro Koseki ,  Tomomichi Ito ,  Motoo Futami

    IPC分类号： H02M1/15 ,  H02M3/155

    CPC分类号： H02J3/01 ,  Y02E40/40

    摘要： In a system to which a fluctuating load is connected, compensating for fluctuation in voltage harmonics at the load connecting point and fluctuation in system current harmonics has been difficult for a power converting device connected in parallel with the load. To resolve the problem, a power converting device connected in parallel with a fluctuating load includes: a Fourier series expansion unit which executes Fourier series expansion to load current by use of a reference sine wave in sync with a system and thereby outputs Fourier coefficients; and a fundamental component calculating unit which calculates a positive phase active fundamental component of the load current from the Fourier coefficients. A current instruction of the power converting device is generated by subtracting the fundamental current from the load current. With the current instruction, the fluctuations in system current harmonics and in voltage harmonics at the connecting point can be compensated for.

    摘要翻译： 在连接波动负载的系统中，与负载并联连接的电力转换装置难以补偿负载连接点的电压谐波的波动和系统电流谐波的波动。 为了解决该问题，与波动负载并联连接的电力转换装置包括：傅立叶级数扩展单元，其通过使用与系统同步的参考正弦波来执行傅里叶级数展开以加载电流，从而输出傅立叶系数; 以及从傅立叶系数计算负载电流的正相位有源基波分量的基波分量计算单元。 通过从负载电流中减去基波电流来产生电力转换装置的电流指令。 利用当前的指令，可以补偿系统电流谐波和连接点电压谐波的波动。