Solar photovoltaic (SPV) array does not give constant power output due to the adverse effects of various stresses over its performance. Dust is a critical affecting factor, especially in tropical, arid, and semiarid regions, as it reduces power output by lowering the transmittance of the glass cover. Usually, total dust accumulation on an SPV module goes through three processes viz., deposition, rebound, and re-suspension. In this article, a detailed analysis of all these phenomena has been carried out to build up a comprehensive model for dry deposition of dust to assess power output reduction for this. Variations of all these processes for particles with different diameters and modules at various tilt angles have also been investigated. The model shows that transmittance becomes minimum at a tilt angle of about 15°, which is validated by laboratory experimentation. The deviation between measured and the model-based calculated dust deposition density is found to be 4.84%. The energy output of 10 kWP PV power plant has been calculated with this model with weather data collected from a weather monitoring station (at latitude 22.5713°N, longitude 88.3109°E) and dust data from a website of Government of India. Daily generated energy in this plant for 15 days is recorded by a digital meter and compared with the calculated ones. The deviation between the two is seen to be within ±6%.

中文翻译：

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通过干沉积工艺对光伏组件上的灰尘堆积进行综合建模

由于各种应力对其性能的不利影响，太阳能光伏 (SPV) 阵列不能提供恒定的功率输出。灰尘是一个关键的影响因素，尤其是在热带、干旱和半干旱地区，因为它会降低玻璃罩的透光率，从而降低功率输出。通常，SPV 模块上的总灰尘积累经过三个过程，即沉积、回弹和再悬浮。在本文中，对所有这些现象进行了详细分析，以建立一个综合的粉尘干沉积模型，以评估功率输出减少。还研究了所有这些过程在不同倾角下具有不同直径和模块的粒子的变化。该模型显示，在大约 15° 的倾斜角处，透射率变得最小，这是通过实验室实验验证的。发现实测和基于模型计算的粉尘沉积密度之间的偏差为 4.84%。10 kWP 光伏电站的能量输出已使用该模型通过天气监测站（北纬 22.5713°，东经 88.3109°）收集的天气数据和印度政府网站的灰尘数据计算得出。该工厂 15 天每天产生的能量由数字仪表记录并与计算得出的能量进行比较。可以看出两者之间的偏差在±6%以内。5713°N，经度 88.3109°E）和来自印度政府网站的灰尘数据。该工厂 15 天每天产生的能量由数字仪表记录并与计算得出的能量进行比较。可以看出两者之间的偏差在±6%以内。5713°N，经度 88.3109°E）和来自印度政府网站的灰尘数据。该工厂 15 天每天产生的能量由数字仪表记录，并与计算得出的能量进行比较。可以看出两者之间的偏差在±6%以内。