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What is the role of solar inverter in solar power system?

2022-04-06
Solar power generation is a new energy field that is energy-saving and environmentally friendly. It is a popular project so far. At present, distributed solar power generation has become an investment project for many households, but many people do not have some accessories for solar power generation. Such as solar inverters, many companies involved in this industry do not know why they use solar inverters in solar power generation?

The principle of solar power generation is a technology that directly converts light energy into electrical energy by using the solar effect of the semiconductor interface. A key component of the technology is the solar cell. The solar cells are packaged and protected in series to form a large-area solar cell module, and then combined with a power controller to form a solar power generation device. The whole process is called a solar power system. The solar power generation system consists of solar cell arrays, battery packs, charge and discharge controllers, solar inverters, AC power distribution cabinets, solar tracking control systems and other equipment.

A solar inverter is a device that converts direct current to alternating current. Since solar cells and batteries are DC power sources and the load is an AC load, a solar inverter is essential. According to the operation mode, solar inverters can be divided into off-grid solar inverters and solar grid-connected inverters.

Stand-alone solar inverters are used in stand-alone solar cell power systems to power stand-alone loads. Grid-tied inverters are used in parallel-operated solar cell power generation systems. Solar cells generate DC power in sunlight, but DC-powered systems have significant limitations. For example, fluorescent lamps, televisions, refrigerators, electric fans, etc. cannot be directly powered by DC power, like most motors. In addition, when the power supply system needs to step up or step down, the AC system only needs to add a transformer, while the step-up and step-down technology of the DC system is much more complicated. Therefore, in addition to special users such as communication and meteorology that directly use direct current, it is also necessary to install solar inverters in the solar power generation system for production and use.

The solar inverter is the core of the entire solar power system. Not only can the solar power generation work normally, but also the working status of the solar power station can be monitored in real time, which brings convenience to the later maintenance work.