AC Photovoltaic Power Generation Systems

In the last article, we know that in the AC Photovoltaic Power Generation System, we could have AC inverer or AC-DC inverter. Another AC solar power generation system is mains complementary photovoltaic power generation system. Let's check it.

2. Mains complementary photovoltaic power generation system

The mains complementary photovoltaic power generation system is mainly based on solar photovoltaic power generation, supplemented by ordinary 220V AC power supplementary power. In such a photovoltaic power generation system, the capacity of solar cells and storage batteries can be designed to be smaller. Basically, when there is sunlight during the daytime, the electricity generated is used on that day, and when there is rainy day, it is supplemented by mains electricity. According to the record, in most areas of China, more than two-thirds of the days are sunny. This form not only reduces the one-time investment of the solar photovoltaic power generation system, but also has significant energy saving and emission reduction effects. It is a suitable way to popularize and promote the solar photovoltaic power generation.

So where is the mains complementary photovoltaic power generation system used? For example, in the renovation of street lamps in an urban area, huge investment costs will be needed if all ordinary street lamps are replaced by solar street lamps. Therefore, it is difficult to achieve. However, if the ordinary street lamps are modified, the original mains power supply lines and lamp poles stay the same, the energy-saving light source lamps and lanterns are replaced, and the mains complementary photovoltaic power generation form is used, it constitutes a mains complementary solar photovoltaic street light, the investment is reduced by more than half, and the energy saving effect is remarkable.