The benefits of the "three no's and one zero" in photovoltaic power generation
Photovoltaic power generation directly converts solar energy into direct current (DC) electricity through the semiconductor properties of photovoltaic cells. This DC electricity is then converted into alternating current (AC) that can be used by us through an inverter.
A photovoltaic system consists of components such as photovoltaic modules, mounting brackets, DC cables, inverters, AC cables, distribution cabinets, transformers, etc. The mounting brackets are non-electrified, so they do not produce electromagnetic radiation. The photovoltaic modules and DC cables carry direct current, with no change in direction, meaning they can only generate an electric field but not a magnetic field. The electromagnetic radiation from photovoltaic inverters is similar to that of household appliances, roughly equivalent to a laptop, and lower than that of induction cookers, hairdryers, or refrigerators.
Therefore, the construction of photovoltaic power stations not only does not pose a health risk to humans but also provides green, clean, and high-quality energy for the Earth, making it a key direction for future energy development.
The photovoltaic manufacturing industry primarily includes four stages: silicon purification, silicon ingot and wafer production, photovoltaic cell manufacturing, and photovoltaic module assembly. Among these, silicon purification requires high-temperature conditions and consumes a large amount of electrical energy. As for whether the installation of photovoltaic modules causes light pollution, the visible light reflectance of ordinary tempered glass is between 9% and 11%, which does not cause light pollution. The glass used in photovoltaic modules is the same type as that used in buildings, so it does not cause light pollution.
Photovoltaic power generation converts solar energy into electricity through the photovoltaic effect. During this process, no noise is generated, and no pollutant emissions occur, making it ideal for installation on residential and commercial/industrial rooftops.