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    • 4. 发明申请
    • METHOD AND APPARATUS FOR GENERALIZED AC AND DC ARC FAULT DETECTION AND PROTECTION
    • 用于通用交流和直流电弧故障检测和保护的方法和装置
    • US20110012607A1
    • 2011-01-20
    • US12890861
    • 2010-09-27
    • HASSAN ALI KOJORIYANG YE
    • HASSAN ALI KOJORIYANG YE
    • G01R31/08
    • H02H1/0015H02H3/0935
    • According to the features discussed herein, through a single generalized arc-fault detection algorithm, various types of series and/or parallel arc faults can be detected without any nuisance trip for either AC or DC Electric Power Systems. Running Discrete Fourier Series (RDFS) formulation for nuisance-free operation and cost-effective implementation is developed. Unlike other methods which require numerous source and load-side current and voltage measurements, only source side current is required. An arc detector may include a first detector to monitor variations of a magnitude of a fundamental component of a current, and a second detector to monitor an overload condition based in an i2t calculation. A method may include obtaining a first cycle of a fundamental component of a current, obtaining a second cycle of the fundamental component of the current, and comparing the first cycle of the fundamental component of the current and the second cycle of the fundamental component of the current to determine if a difference of the first cycle and the second cycle is greater than a threshold amount.
    • 根据本文所讨论的特征,通过单一的广义电弧故障检测算法,可以检测各种类型的串联和/或并联电弧故障,而无需任何AC或DC电力系统的扰动跳闸。 开发了运行离散傅立叶级数(RDFS)制定无障碍操作和成本效益实施。 与需要大量源极和负载侧电流和电压测量的其他方法不同,仅需要源极侧电流。 电弧检测器可以包括第一检测器,用于监测电流的基波分量的幅度的变化,以及第二检测器,用于监测基于i2t计算的过载状况。 一种方法可以包括获得电流的基波分量的第一周期,获得电流的基波分量的第二周期,以及比较电流的基波分量的当前和第二周期的基波分量的第一周期 电流以确定第一周期和第二周期的差是否大于阈值量。
    • 5. 发明申请
    • METHOD AND APPARATUS OF A MAXIMUM POWER POINT TRACKING CIRCUIT FOR SOLAR POWER GENERATION
    • 用于太阳能发电的最大功率点跟踪电路的方法和装置
    • US20100171482A1
    • 2010-07-08
    • US12350252
    • 2009-01-08
    • YANG YESheng Tao
    • YANG YESheng Tao
    • G05F5/00
    • G05F1/67
    • A circuit that tracks the maximum power point of the solar cell is disclosed in the present invention. Unlikely conventional way of maximum power point tracking (maximum power point is referred to as MPP hereinafter; maximum power point tracking is referred to as MPPT hereinafter) which tracks MPP in the time frame of second or minutes, in the disclosed invention, MPP is tracked within the switching cycle, using the natural current ripple of the downstream converter circuit. The switching cycle is in the order of 10s of micro-seconds. Within the switching cycle of the converter, there is a natural current ripple which will result in the power change. The MPPT circuit tracks the power change and adjusts the current reference value accordingly to operate at MPP of the solar cell.
    • 在本发明中公开了跟踪太阳能电池的最大功率点的电路。 在所公开的发明中,不寻常的最大功率点跟踪方法(最大功率点在下文中称为MPP,下文称为MPPT,称为MPPT),其在第二或分钟的时间帧内跟踪MPP,在MPP中被跟踪 在开关周期内,使用下游转换电路的自然电流纹波。 开关周期为10秒的微秒级。 在转换器的开关周期内,有一个自然的电流纹波会导致电源变化。 MPPT电路跟踪功率变化并相应地调整电流参考值以在太阳能电池的MPP处工作。