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    Wind power converter system with grid side reactive power control
    3.
    发明公开
    Wind power converter system with grid side reactive power control 审中-公开
    具有电网侧无功功率控制的风力发电变流系统

    公开(公告)号：EP2403128A3

    公开(公告)日：2018-03-28

    申请号：EP11167698.7

    申请日：2011-05-26

    申请人： Rockwell Automation Technologies, Inc.

    发明人： Lu, Haihui ,  Wei, Lixiang ,  Lukaszewski, Richard A. ,  Kerkman, Russel J. ,  Yuan, Zhenhuan

    IPC分类号： H02P9/10 ,  H02J3/38 ,  H02P9/00 ,  H02M5/458

    摘要： The present techniques include methods and systems for operating a wind power system to maintain a lifespan of the rotor side converter. In some embodiments, the current of the rotor side converter may be minimized to reduce the stress and/or junction temperature variation in the switching transistors and bond wires of the converter. More specifically, embodiments involve using a minimal current in the rotor side converter based on the rotor side and grid side reactive powers. If the grid side reactive power is greater than a maximum grid side reactive power, the grid side reactive power may be reduced. Further, if the total reactive power does not meet the grid reactive power requirements, the minimal current in the rotor side converter may be adjusted such that the system may sufficiently power the grid.

    摘要翻译： 本技术包括用于操作风力发电系统以维持转子侧转换器的寿命的方法和系统。 在一些实施例中，转子侧转换器的电流可以被最小化以降低转换器的开关晶体管和接合线中的应力和/或结温度变化。 更具体地说，实施例涉及基于转子侧和电网侧无功功率在转子侧转换器中使用最小电流。 如果电网侧无功功率大于最大电网侧无功功率，则电网侧无功功率可能减小。 此外，如果总无功功率不满足电网无功功率要求，则可以调节转子侧转换器中的最小电流，使得系统可以充分地为电网供电。

    Adjustable speed drive lifetime improvement method
    7.
    发明公开
    Adjustable speed drive lifetime improvement method 有权
    Verfahren zur Lebensdauerverbesserung eines Antriebs mit einstellbarer Geschwindigkeit

    公开(公告)号：EP2398140A3

    公开(公告)日：2015-03-18

    申请号：EP11167258.0

    申请日：2011-05-24

    申请人： Rockwell Automation Technologies, Inc.

    发明人： Wei, Lixiang ,  Lukaszewski, Richard A. ,  Kerkman, Russel J.

    IPC分类号： H02M7/5387 ,  H02P29/00 ,  H02M1/32 ,  H02P27/08 ,  H02M7/537 ,  H02P9/00

    CPC分类号： H02M7/537 ,  H02M7/53875 ,  H02P9/007 ,  H02P27/08 ,  H02P29/68

    摘要： The present techniques include methods and systems for operating an inverter to maintain a lifespan of the inverter. In some embodiments, the switching frequency and/or the output current of the inverter may be changed such that stress may be reduced on the inverter bond wires of the inverter. More specifically, embodiments involve calculating the aging parameters for certain operating conditions of the inverter and determining whether the operating conditions result in aging the inverter to a point which reduces the inverter lifespan below a desired lifespan. If the operating conditions reduce the inverter lifespan below the desired lifespan, the switching frequency may be reduced to a lower or minimum switching frequency of the inverter and/or the output current of the inverter may be reduced to a maximum output current at the minimum switching frequency.

    摘要翻译： 本技术包括用于操作逆变器以保持逆变器的寿命的方法和系统。 在一些实施例中，可以改变逆变器的开关频率和/或输出电流，使得逆变器的反相器接合线上的应力可能减小。 更具体地，实施例涉及计算逆变器的某些操作条件的老化参数，并确定操作条件是否导致变频器老化到将变频器寿命降低到期望寿命以下的时间点。 如果工作条件将变频器寿命降低到期望的寿命以下，则可以将开关频率降低到变频器的较低或最小开关频率，和/或可以将逆变器的输出电流降至最小输出电流 频率。