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模拟分析环境因素对小型太阳能发电系统运行特性的影响

, PP. 158-165

Keywords: 环境条件,太阳能发电系统,太阳能电池板,最大功率追踪,蓄电池

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Abstract:

以小型独立太阳能发电系统为例,采用分段函数模型,分别以随机光照、温度作为环境影响因素,分析研究了在光伏电池板周围环境变化的情况下,整个系统运行特性所受到的影响。文中通过改变环境参量模型的输入参数,得到云层遮挡、天气频繁变化等环境条件,同时观察太阳能电池板技术参数、蓄电池充电、系统输出功率的变化情况。结果表明在光照曲线受到环境因素影响的条件下,蓄电池的充电过程产生明显变化,当光强稳定增加时,其充电曲线平滑,充电时间短;当光照强度不足时,造成其充电电流不稳,导致充电时间增加。随天气条件频繁变化,系统的输出功率产生波动,光照强度较大时,系统对最大功率追踪准确。

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