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    Method and apparatus for tracking maximum power point for inverters, for example, in photovoltaic applications
    2.
    发明申请
    Method and apparatus for tracking maximum power point for inverters, for example, in photovoltaic applications 有权
    用于跟踪逆变器的最大功率点的方法和装置，例如在光伏应用中

    公开(公告)号：US20050002214A1

    公开(公告)日：2005-01-06

    申请号：US10836631

    申请日：2004-04-30

    申请人： Duo Deng ,  Anil Tuladhar ,  Kenneth Farkas ,  Kerry Grand

    发明人： Duo Deng ,  Anil Tuladhar ,  Kenneth Farkas ,  Kerry Grand

    IPC分类号： G05F1/67 ,  H02M1/00

    CPC分类号： G05F1/67 ,  Y02E10/58

    摘要： A power system employs an outer voltage feedback loop and an inner current feedback loop to control a power converter, such as a DC to AC inverter for transferring electrical power between a power source, for example a photovoltaic array, and a load, for example a power grid. The outer loop accommodates variations in the output of the power source, for example accommodating anomalies in IV characteristics such as IV droop characteristic associated with photovoltaic cells. The outer loop may employ a first control regime or a second control regime, for example, dependent on whether a DC bus voltage or power is smaller than a value corresponding to measurement resolution or expected noise.

    摘要翻译： 电力系统采用外部电压反馈环路和内部电流反馈环路来控制功率转换器，例如用于在电源（例如光伏阵列）和负载之间传送电力的DC至AC逆变器，例如 电网。 外部回路适应电源输出的变化，例如适应诸如与光伏电池相关联的IV下降特性的IV特性中的异常。 外环可以采用例如取决于DC总线电压或功率是否小于对应于测量分辨率或预期噪声的值的第一控制状态或第二控制状态。

    Method and apparatus for tracking maximum power point for inverters, for example, in photovoltaic applications
    3.
    发明授权
    Method and apparatus for tracking maximum power point for inverters, for example, in photovoltaic applications 有权
    用于跟踪逆变器的最大功率点的方法和装置，例如在光伏应用中

    公开(公告)号：US07158395B2

    公开(公告)日：2007-01-02

    申请号：US10836631

    申请日：2004-04-30

    申请人： Duo Deng ,  Anil Tuladhar ,  Kenneth J. Farkas ,  Kerry E. Grand

    发明人： Duo Deng ,  Anil Tuladhar ,  Kenneth J. Farkas ,  Kerry E. Grand

    IPC分类号： H02M7/44

    CPC分类号： G05F1/67 ,  Y02E10/58

    摘要： A power system employs an outer voltage feedback loop and an inner current feedback loop to control a power converter, such as a DC to AC inverter for transferring electrical power between a power source, for example a photovoltaic array, and a load, for example a power grid. The outer loop accommodates variations in the output of the power source, for example accommodating anomalies in IV characteristics such as IV droop characteristic associated with photovoltaic cells. The outer loop may employ a first control regime or a second control regime, for example, dependent on whether a DC bus voltage or power is smaller than a value corresponding to measurement resolution or expected noise.

    摘要翻译： 电力系统采用外部电压反馈环路和内部电流反馈环路来控制功率转换器，例如用于在电源（例如光伏阵列）和负载之间传送电力的DC至AC逆变器，例如 电网。 外部回路适应电源输出的变化，例如适应诸如与光伏电池相关联的IV下降特性的IV特性中的异常。 外环可以采用例如取决于DC总线电压或功率是否小于对应于测量分辨率或预期噪声的值的第一控制状态或第二控制状态。

    Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter
    5.
    发明授权
    Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter 失效
    电力变换器等功率转换装置的周期误差校正方法和装置

    公开(公告)号：US07545659B2

    公开(公告)日：2009-06-09

    申请号：US12053783

    申请日：2008-03-24

    申请人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    发明人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    IPC分类号： H02J9/04

    CPC分类号： H02M5/458 ,  H02J9/062 ,  Y10T307/735 ,  Y10T307/852

    摘要： Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system can comprise an electronic power inverter, such as one usable with an uninterruptible power supply. Cycles of signals indicative of the AC grid power and the AC load power are counted and compared to obtain a cycle error value. If the cycle error value exceeds a first value to indicate that AC load side frequency is too high or too low, then compensation is performed to change the AC load side frequency to be closer to the AC grid side frequency. If the cycle error value falls below a second value to indicate that the AC grid side frequency and AC load side frequency are sufficiently close to one another, then the compensation is deactivated.

    摘要翻译： 在电子电力系统中执行周期误差校正，以补偿AC电网侧频率和AC负载侧频率之间的差异。 电子电力系统可以包括诸如可用于不间断电源的电子功率逆变器。 对表示交流电网功率和交流负载功率的信号周期进行计数和比较，以获得周期误差值。 如果循环误差值超过第一个值以指示交流负载侧频率太高或过低，则执行补偿以将交流负载侧频率更改为更接近交流电网侧频率。 如果循环误差值低于第二值，以表示交流电网侧频率和交流负载侧频率彼此充分接近，则不使能补偿。

    METHOD AND APPARATUS FOR CYCLE ERROR CORRECTION FOR A POWER CONVERTER DEVICE, SUCH AS AN ELECTRONIC POWER INVERTER
    9.
    发明申请
    METHOD AND APPARATUS FOR CYCLE ERROR CORRECTION FOR A POWER CONVERTER DEVICE, SUCH AS AN ELECTRONIC POWER INVERTER 失效
    用于电力转换器装置的循环错误校正的方法和装置，如电力逆变器

    公开(公告)号：US20080165555A1

    公开(公告)日：2008-07-10

    申请号：US12053783

    申请日：2008-03-24

    申请人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    发明人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    IPC分类号： H02M5/42

    CPC分类号： H02M5/458 ,  H02J9/062 ,  Y10T307/735 ,  Y10T307/852

    摘要： Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system can comprise an electronic power inverter, such as one usable with an uninterruptible power supply. Cycles of signals indicative of the AC grid power and the AC load power are counted and compared to obtain a cycle error value. If the cycle error value exceeds a first value to indicate that AC load side frequency is too high or too low, then compensation is performed to change the AC load side frequency to be closer to the AC grid side frequency. If the cycle error value falls below a second value to indicate that the AC grid side frequency and AC load side frequency are sufficiently close to one another, then the compensation is deactivated.

    摘要翻译： 在电子电力系统中执行周期误差校正，以补偿AC电网侧频率和AC负载侧频率之间的差异。 电子电力系统可以包括诸如可用于不间断电源的电子功率逆变器。 对表示交流电网功率和交流负载功率的信号周期进行计数和比较，以获得周期误差值。 如果循环误差值超过第一个值以指示交流负载侧频率太高或过低，则执行补偿以将交流负载侧频率更改为更接近交流电网侧频率。 如果循环误差值低于第二值，以表示交流电网侧频率和交流负载侧频率彼此充分接近，则不使能补偿。

    Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter
    10.
    发明授权
    Method and apparatus for cycle error correction for a power converter device, such as an electronic power inverter 有权
    电力变换器等功率转换装置的周期误差校正方法和装置

    公开(公告)号：US07362600B2

    公开(公告)日：2008-04-22

    申请号：US10956736

    申请日：2004-10-01

    申请人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    发明人： Duo Deng ,  Kenneth J. Farkas ,  Anil Tuladhar ,  Kerry E. Grand

    IPC分类号： H02M3/24 ,  H02M7/537 ,  H02J1/00

    CPC分类号： H02M5/458 ,  H02J9/062 ,  Y10T307/735 ,  Y10T307/852

    摘要： Cycle error correction is performed in an electronic power system to compensate for a difference between an AC grid side frequency and an AC load side frequency. The electronic power system includes an electronic power inverter, such as one usable with an uninterruptible power supply. Cycles of signals indicative of the AC grid power and the AC load power are counted and compared to obtain a cycle error value. If the cycle error value exceeds a first value to indicate that AC load side frequency is too high or too low, then compensation is performed to change the AC load side frequency to be closer to the AC grid side frequency. If the cycle error value falls below a second value to indicate that the AC grid side frequency and AC load side frequency are sufficiently close to one another, then the compensation is deactivated.

    摘要翻译： 在电子电力系统中执行周期误差校正，以补偿AC电网侧频率和AC负载侧频率之间的差异。 电子电力系统包括可用于不间断电源的电子功率逆变器。 对表示交流电网功率和交流负载功率的信号周期进行计数和比较，以获得周期误差值。 如果循环误差值超过第一个值以指示交流负载侧频率太高或过低，则执行补偿以将交流负载侧频率更改为更接近交流电网侧频率。 如果循环误差值低于第二值，以表示交流电网侧频率和交流负载侧频率彼此充分接近，则不使能补偿。