Abstract A detachable cleaning device that utilizes electrodynamic force has been improved to clean hardly adhered dust particles owing to the moisture absorption from the surface of photovoltaic (PV) panels. The device comprises parallel screen electrodes attached in a plastic frame. When a high ac voltage is applied to the parallel screen electrodes (whose lower part is set on a soiled PV panel), the generated electrodynamic force acts on the particles under the lower electrode. A flip-flop motion of the particles arises between the electrodes owing to the electrodynamic force as well as some particles that pass through the openings of the upper screen electrode and fall downward along the inclined panel owing to gravitational force. Hence, the dust deposited on the panel is cleaned. Previously, it has been demonstrated that dust is removed efficiently from the surface of an inclined panel by applying a low-frequency high-voltage. However, the performance is low for particles that are strongly fixed on the panel. Three countermeasures are proposed herein to improve the cleaning of dust particles: by adjusting the operational scheme, improving the electrode configuration, and utilizing airflow. This improved technology is expected to realize the efficient operation of large-scale PV power generation plants constructed in deserts.

中文翻译：

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改进的可拆卸电动清洁系统，用于去除污染的光伏面板上的灰尘

摘要 改进了一种利用电动力的可拆卸清洁装置来清洁由于光伏（PV）面板表面吸湿而难以粘附的灰尘颗粒。该设备包括连接在塑料框架中的平行屏幕电极。当向平行屏幕电极（其下部设置在脏污的光伏面板上）施加高交流电压时，产生的电动力作用在下部电极下方的颗粒上。粒子在电极之间由于电动力发生触发器运动，以及一些粒子通过上屏电极的开口并由于重力沿倾斜面板向下落。因此，沉积在面板上的灰尘被清除。之前，已经证明通过施加低频高压可以有效地从倾斜面板的表面去除灰尘。但是，对于强力固定在面板上的颗粒，性能较低。本文提出了三个改善粉尘颗粒清洁的对策：通过调整操作方案、改进电极配置和利用气流。这项改进后的技术有望实现在沙漠中建造的大型光伏电站的高效运行。改进电极配置，并利用气流。这项改进后的技术有望实现在沙漠中建造的大型光伏电站的高效运行。改进电极配置，并利用气流。这项改进后的技术有望实现在沙漠中建造的大型光伏电站的高效运行。