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The management and maintenance of urban lighting facilities are of great significance and considerable economic value and social value, and the more important in the world of energy shortage today. Urban lighting facilities can only maintain continuous and effective work under good maintenance conditions. If it is not well maintained, it will increase the aging […]
In order to effectively control the power fluctuation caused by the change of wind speed, the control system adopts the method of adjusting the size of the unloaded load. When the difference between the measured power and the power consumption of the lead-acid battery circuit reaches a certain value, the threshold switch is closed, the […]
Two key issues in developing solar cells are: improving conversion efficiency and reducing cost. Due to the low cost and easy mass production of amorphous silicon thin film solar cells, they have been widely paid attention to and developed rapidly. As early as the early 1970s, Carlson et al. started the research and development of […]
The production of solar cells is mainly based on semiconductor materials, and its working principle is to use photoelectric materials to absorb light energy and generate a photoelectric conversion effect. Depending on the materials used, solar cells are classified as shown in Figure 1. According to the crystalline state, solar cells can be divided into […]