Linearity Testing of Photovoltaic Cells
Linearity Testing of Photovoltaic Cells
复制标题
光伏电池的线性测试
DOI：
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发表时间：
2006
期刊：
影响因子：
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通讯作者：
D. Nalley
中科院分区：
文献类型：
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作者：
K. Emery;S. Winter;S. Pinegar;D. Nalley
光伏器件根据其相对于特定光谱、总辐照度和温度的峰值功率进行额定值。为了对光伏器件进行评级，需要一个响应与总辐照度呈线性关系的参考探测器。本文介绍了用两盏灯照射参考电池，测定短路电流（Isc）与总辐照度（Etot）线性关系的方法。如果两个灯照亮电池时测量的电流与每个灯照亮电池时的电流之和相同，则该器件为线性器件。双灯法对随辐照度变化的光谱或空间非均匀性不敏感。双灯法快速，易于实施，并且不需要操作人员干预来改变辐照度。室内光的存在只限制了可评估的最低辐照度。与其他方法不同，双灯方法不允许对非线性效应进行电流校正
Photovoltaic devices are rated in terms of their peak power with respect to a specific spectrum, total irradiance, and temperature. To rate photovoltaic devices, a reference detector is required whose response is linear with total irradiance. This paper describes a procedure to determine the linearity of the short-circuit current (Isc) versus the total irradiance (Etot) by illuminating a reference cell with two lamps. A device is linear if the current measured with both lamps illuminating the cell is the same as the sum of the currents with each lamp illuminating the cell. The two-lamp method is insensitive to the light spectra or spatial nonuniformity changing with irradiance. The two-lamp method is rapid, easy to implement, and does not require operator intervention to change the irradiances. The presence of room light only limits the lowest irradiance that can be evaluated. Unlike other methods, the two-lamp method does not allow the current to be corrected for nonlinear effects