Photovoltaic power generation is based on the principle of photovoltaic effect, using solar cells to directly convert sunlight energy into electrical energy. The key component is the solar panel, which can be packaged and protected after being connected in series to form a large-area solar cell module, and then cooperate with power controllers and other components to form a photovoltaic power generation device. The principle is the photoelectric effect of semiconductors. When a photon irradiates a metal, its energy can be completely absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the internal gravitational force of the metal to do work, escape from the metal surface, and become a photoelectron.
Photovoltaic power generation has many advantages. It does not emit any substances including greenhouse gases, no noise, no pollution, and solar energy resources are widely distributed and inexhaustible. Therefore, compared with new power generation technologies such as wind power, biomass power and nuclear power, photovoltaic power generation is a renewable energy power generation technology with the most sustainable development concept.
Traditional fuel energy is decreasing day by day, and the harm to the environment is becoming more and more prominent. On September 22, 2020, President Xi Jinping announced at the 75th session of the United Nations General Assembly that China strives to reach the peak of carbon dioxide emissions by 2030 and strives for 2060 achieve carbon neutrality goals.
Under the “double carbon” goal, the photovoltaic industry is a new development opportunity. Photovoltaic energy, as a renewable energy, has the feasibility of replacing coal energy in terms of photovoltaic resource potential, technology cost, and construction cost, thus promoting the transformation of the power system. With the strong support of the state, a large number of internationally competitive companies have emerged in my country. In 2022, the global share of high-purity crystalline silicon produced nationwide has reached 90%, silicon rods and wafers accounted for 97% of the world, and components accounted for 75%. % to 80%. In this round of ecological low-carbon and high-quality development in the world, China has firmly become the largest country driving the energy transition of all mankind, making Chinese manufacturing and Chinese technology the first protagonist in promoting and leading the energy transition of all mankind .
Post time: May-20-2023