The solar photovoltaic system consists of a solar mounting sturctures, a solar battery, a solar controller, and a battery (group). If the output power is AC 220V or 110V, you also need to configure the inverter. The role of each part is:
(A) Solar panels: Solar panels are the core part of solar power systems and the highest value in solar power systems. Its role is to convert the sun's radiant power into electrical energy, or send it to a storage battery, or push a load to work.
(B) Solar Controller: The role of the solar controller is to control the working status of the entire system, and play the role of overcharge protection and over-discharge protection of the battery. In areas with large temperature differences, qualified controllers should also have temperature compensation. Other additional functions such as light control switch, time control switch should be optional controller;
(C) Storage batteries: Lead-acid batteries are generally used. NiMH batteries, nickel-cadmium batteries or lithium batteries may also be used in small-scale micro-systems. Its role is to store the electric energy emitted by the solar panel when there is light, and release it when needed.
(D) Inverter: The direct solar output is generally 12VDC, 24VDC, 48VDC. In order to supply electric energy to 220VAC electric appliances, it is necessary to convert the DC electric energy generated by the solar power generation system into AC electric energy, and therefore it is necessary to use a DC-AC inverter.
(E) Solar mounting structures are used to support the solar panels.