Utility grid-interactive power converter with ripple current cancellation using skewed switching techniques
    21.
    发明申请
    Utility grid-interactive power converter with ripple current cancellation using skewed switching techniques 审中-公开
    使用偏斜切换技术的纹波电流消除的公用电网交互式电力转换器

    公开(公告)号:US20060034103A1

    公开(公告)日:2006-02-16

    申请号:US10710957

    申请日:2004-08-14

    Applicant: Rick West

    Inventor: Rick West

    Abstract: The invention is an electrical power conversion apparatus for converting DC voltage to poly-phase AC current where the AC current is supplied directly to the electric utility grid for power transfer into the grid. The power conversion apparatus has two or more separate, pulse modulated, high frequency power converters per phase. The outputs of the power converters are summed at a common connection point substantially on the load side of the main pulse filter inductors. The high frequency pulse train of each separate power converter is skewed or phase delayed with respect to the other converters on the same AC power phase for the purpose of reducing the amount of high frequency ripple current injected into the electric utility grid.

    Abstract translation: 本发明是一种电力转换装置,用于将直流电压转换为多相交流电流,其中交流电流直接供应到电力电网,用于电力传输到电网。 功率转换装置每相具有两个或更多个单独的脉冲调制的高频功率转换器。 功率转换器的输出在基本上在主脉冲滤波电感器的负载侧的公共连接点相加。 为了减少注入电力电网的高频纹波电流,每个分离的功率转换器的高频脉冲串相对于同一AC电力相位上的其它转换器偏斜或相位延迟。

    Photovoltaic array with two-axis power maximization tracking
    22.
    发明授权
    Photovoltaic array with two-axis power maximization tracking 失效
    具有双轴功率最大化跟踪的光伏阵列

    公开(公告)号:US4868379A

    公开(公告)日:1989-09-19

    申请号:US209010

    申请日:1988-06-20

    Applicant: Rick West

    Inventor: Rick West

    CPC classification number: G01R21/00 G01S3/7861

    Abstract: A control system for maximizing the power supplied by an array of solar cells senses the current and voltage produced and multiplies these to determine the instantaneous power. The array is tilted slightly in a first direction and the effect on the instantaneous power is noted. If an increase in power was produced, a further movement in the same direction is executed; but if the first movement produced a reduction in power, a movement in the opposite direction is executed. The process continues until no increase in power is obtained in either direction. Thereafter, the same process is carried out with respect to a second axis of the solar array.

    Abstract translation: 用于最大化由太阳能电池阵列提供的功率的控制系统感测所产生的电流和电压,并且乘以它们以确定瞬时功率。 阵列在第一方向稍微倾斜,并注意对瞬时功率的影响。 如果产生功率增加,则执行相同方向的进一步移动; 但是如果第一动作产生功率的降低,则执行相反方向的运动。 该过程继续,直到在任一方向上不能获得功率增加。 此后,相对于太阳能电池阵列的第二轴进行相同的处理。

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