Solar panels (photovoltaic panels) operate based on the photovoltaic effect, utilizing semiconductor materials to convert sunlight directly into electrical energy. When sunlight strikes the surface of a solar cell, photons interact with electrons within the semiconductor material, providing them with enough energy to break free from atomic bonds and create free electrons and holes. Driven by the internal electric field of the cell, these free electrons move in a specific direction, generating a stable direct current (DC) and enabling the direct conversion of solar energy into electricity. This entire power generation process requires no fuel combustion and produces no exhaust gases, wastewater, or noise, making it a green and environmentally friendly method of generating power.
Solar panels typically consist of multiple solar cells connected in series or parallel; each cell continuously absorbs solar radiation and generates electricity. When multiple cells work together, they can output the voltage and current required for practical applications. The modules are sealed and protected using materials such as high-transmittance tempered glass, encapsulant films, and backsheets. These materials not only enhance light utilization but also effectively shield the cells from moisture, dust, and external environmental factors, thereby ensuring the long-term, stable operation of the photovoltaic module and maintaining high power generation efficiency.
Since solar panels output direct current (DC), whereas households, businesses, and public power grids predominantly use alternating current (AC), a photovoltaic inverter is required to convert the electrical energy. The inverter transforms the DC generated by the solar panels into AC that meets standard power requirements, which is then supplied to various electrical devices or fed into the power grid. If the system is equipped with energy storage batteries, excess electricity can be stored for use during the night, in overcast or rainy weather, or during power outages, thereby improving energy utilization and power supply stability. Through the coordinated operation of inverters, power distribution equipment, and monitoring systems, the entire photovoltaic power generation system achieves safe and efficient energy management.