Solar panels often suffer from dust accumulation, significantly reducing their output, especially in desert regions where many of the world's largest solar plants are located. Here, an autonomous dust removal system for solar panels, powered by a wind‐driven rotary electret generator is proposed. The generator applies a high voltage between one solar panel's output electrode and an upper mesh electrode to generate a strong electrostatic field. It is discovered that dust particles on the insulative glass cover of the panel can be charged under the high electrical field, assisted by adsorbed water, even in low‐humidity environments. The charged particles are subsequently repelled from the solar panel with the significant Coulomb force. Two panels covered with sand dust are cleaned in only 6.6 min by a 15 cm diameter rotary electret generator at 1.6 m s−1 wind speed. Experimental results manifest that the system can work effectively in a wide range of environmental conditions, and doesn't impact the panel performance for long‐term operation. This autonomous system, with its high dust removal efficiency, simplicity, and low cost, holds great potential in practical applications.

中文翻译：

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利用驻极体发生器对太阳能电池板进行自供电自主静电除尘

太阳能电池板经常受到灰尘堆积的影响，从而大大降低其产量，特别是在世界上许多最大的太阳能发电厂所在的沙漠地区。这里，提出了一种由风力驱动旋转驻极体发电机供电的太阳能电池板自主除尘系统。发生器在一个太阳能电池板的输出电极和上部网状电极之间施加高电压，以产生强静电场。研究发现，即使在低湿度环境下，面板绝缘玻璃盖上的灰尘颗粒在高电场下，在吸附水的辅助下也能带电。带电粒子随后被强大的库仑力从太阳能电池板排斥。直径为 15 厘米的旋转驻极体发生器只需 1.6 毫秒即可清洁两块覆盖有沙尘的面板−1风速。实验结果表明，该系统可以在广泛的环境条件下有效工作，并且不会影响电池板的长期运行性能。这种自主系统具有除尘效率高、简单、成本低的特点，在实际应用中具有巨大的潜力。