The composition of off-grid photovoltaic power generation

Off-grid photovoltaic power generation system:

It consists of solar cell modules, solar charge and discharge controllers, battery packs, off-grid inverters, DC loads and AC loads. Solar power generation systems are widely used in remote mountainous areas, communications, islands, aquaculture and other fields without conventional electricity.

The photovoltaic array converts solar energy into electrical energy under light conditions, supplies power to the load through the solar charge and discharge controller, and charges the battery; when there is no light, the battery pack supplies power to the DC load through the solar charge and discharge controller, and the battery also directly supplies power to the DC load. The independent inverter supplies power, and the independent inverter converts it into AC power to supply power to the AC load. Solar power systems are not standardized products. The same configuration may not be suitable for all users, but is designed and configured according to the user's usage. Different places use different types. Many customers know very little about this. For those interested in installing a solar power system, what kind of solar power system should be chosen?

1.Pure lighting or household appliances? Solar power generation systems can be divided into two types according to their functions. One is a household DC lighting system for simple lighting; the other is a 220V AC output power generation system, which can be used for both lighting and household appliances. The lighting system has simple functions and is the most cost-effective power generation system, but it cannot use household appliances. Solar power generation system for pure lighting. Solar power generation system for household appliances

2. Is it better to choose a portable all-in-one machine or a combined one? All-in-one portables are developed and designed for portability. It's portable and installation-free, making it ideal for outdoor camping. But due to its limited size, the storage capacity is small. The combination requires simple installation, large storage capacity, practical and affordable, because it is more suitable for home users and outdoor living. (Combined solar power generation system) The battery DC photovoltaic power generation system consists of solar cells, charge and discharge controllers, batteries and DC loads. When sunlight enters, the solar cell converts the light energy into electrical energy for the load to use, and stores the electrical energy in the battery at the same time. Or in the evening rainy days, the battery powers the load. Such systems are widely used, ranging from solar lawns, garden lights, mobile communication base stations away from the grid, microwave relay stations, and rural power supplies in remote areas. When the system capacity and load power are large, solar arrays and battery packs are required.

3. AC PV Power Generation AC and AC/DC Hybrid PV Power Generation System AC and AC/DC Hybrid PV Power Generation System Compared with DC PV power generation system, AC PV power generation system has one more AC inverter, which is used to convert DC power into AC power , to provide power for the AC load. The AC/DC hybrid photovoltaic power generation system can supply power to both DC loads and AC loads at the same time. Commercial complementary photovoltaic power generation system The commercial complementary photovoltaic power generation system is an independent photovoltaic power generation system mainly composed of solar photovoltaic power generation and supplemented by ordinary 220V AC power supply. In this way, the capacity of solar cells and storage batteries in photovoltaic power generation systems can be designed to be smaller. Basically, when there is sunshine on the day, the electricity is generated by solar energy, and when it is raining, it is supplemented by mains electricity. More than two-thirds of sunny days have occurred in most areas of my country for many years, which not only reduces the one-time investment of solar photovoltaic power generation systems, but also has significant energy saving and emission reduction effects.