What equipment does a solar power generation system consist of

The solar power generation system is composed of solar battery packs, solar controllers, and storage batteries (groups). If the output power is AC or AC, an inverter is also required. The role of each part is: Solar panel: solar panel is the core part of solar power generation system, also is the most valuable part of the solar system. Its function is to convert the sun’s radiation ability into electrical energy, or store it in the battery, or promote work load. Solar controller: The function of the solar controller is to control the working state of the entire system, and to protect the battery from overcharging and overdischarging. In places with large temperature differences, qualified controllers should also have the function of temperature compensation. Other additional features, such as light control and time control switch should be the optional features of the controller. Battery: normally lead-acid battery, nickel metal hydride batteries, nickel-cadmium batteries or lithium batteries can also be used for small and micro system. Its function is to store the electric energy from solar panels when there is light, and release it when needed. Inverter: To convert the DC power generated by the solar power generation system into AC power, a DC-AC inverter is required.

What are the solar photovoltaic equipment

(1) Solar cell square array. The solar cell phalanx is composed of a solar cell combination board and a phalanx bracket. Because the voltage of a single solar cell is generally relatively low, it is usually necessary to connect them in series and parallel to form a solar panel with practical value as an application unit, and then according to the power supply requirements, multiple application units are connected in series and parallel to form a solar panel. Battery array. Solar panels (certain semiconductor materials, currently mainly polysilicon, monocrystalline silicon and amorphous silicon, assembled after a certain process) are the most important part of the solar photovoltaic system and the most valuable part of the solar photovoltaic power generation system. When the solar panel is illuminated, the battery absorbs light energy, and the accumulation of opposite-sign charges occurs at both ends of the battery, that is, a “photoelectric voltage” is generated, which is the “photoelectric effect”. Under the action of the photoelectric effect, an electromotive force is generated at both ends of the solar cell to convert light energy into electrical energy. It is an energy conversion device.

solar equipment

(2) Battery pack. Its function is to store the electric energy emitted by the solar cell square array when it is illuminated and can supply power to the load at any time. In the solar grid-connected power generation system, the battery pack may not be added.

(3) Controller. A device for regulating and controlling electrical energy.

(4) Inverter. It is a device that converts the direct current provided by the solar cell array and the storage battery into alternating current, and is a key component of the photovoltaic grid-connected power generation system. Since solar cells and batteries are DC power sources, an inverter is essential when the load is an AC load. According to the operation mode, inverters can be divided into independent operation inverters and grid-connected inverters. Stand-alone inverters are used in stand-alone solar cell power generation systems to supply power to independent loads. Grid-connected inverters are used in grid-connected solar cell power generation systems. This paper mainly introduces solar photovoltaic grid-connected power generation systems [1]. As shown in Figure 1, the grid-connected inverter is composed of power switching devices such as igbts. The control circuit makes the switching elements turn on or off in a certain regularity, so that the polarity of the output voltage alternates between positive and negative, and converts DC input into AC output. . Inverters can be divided into square wave inverters and sine wave inverters according to the output waveform. The square wave inverter circuit is simple, the cost is low, but the harmonic component is large, and it is generally used in systems with a few hundred watts or less and low harmonic requirements. Sine wave inverters are expensive, but can be applied to various loads.