What are the characteristics of solar photovoltaic power generation? First, photovoltaic power generation uses solar cells to convert solar energy directly into electrical energy according to the principle of photovoltaic effect. Whether it is independent use or grid-connected power generation, photovoltaic power generation system is mainly composed of three parts: solar panels (components), controllers and inverters. They are mainly composed of electronic components, but do not involve mechanical components.

Therefore, photovoltaic power generation equipment is extremely refined, reliable, stable, long life, easy to install and maintain. In theory, photovoltaic power generation technology can be used in any situation where power is required, from spacecraft to household power, to megawatt power stations, to toys, and photovoltaic power can be everywhere.

The composition and function of solar photovoltaic power generation system

The solar photovoltaic power generation system is composed of a solar battery pack, a solar controller, and a battery (group). If the output power is AC 220V or 110V, you need to configure the inverter. The role of each part is:

1. Solar panels: Solar panels are a core part of solar power systems and the most valuable part of solar power systems. Its role is to convert the solar radiation capacity into electrical energy, or send it to the battery for storage, or to drive the load.

2. Solar controller: The function of the solar controller is to control the working state of the whole system and to protect the battery from over-charge protection and over-discharge protection. In places with large temperature differences, qualified controllers should also have temperature compensation. Other additional functions such as light control switches and time control switches should be optional for the controller;

3. Battery: Generally, it is a lead-acid battery. In a small and micro system, a nickel-hydrogen battery, a nickel-cadmium battery or a lithium battery can also be used. Its function is to store the energy generated by the solar panel when there is light, and then release it when needed.

4. Inverter: The direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to supply electric energy to 220 VAC appliances, it is necessary to convert the DC power generated by the solar power generation system into AC power, so a DC-AC inverter is required.

What are the characteristics of solar photovoltaic power generation?

1. No rotating parts, no noise;

2. No air pollution, no discharge of wastewater;

3. There is no combustion process and no fuel is needed;

4. Maintenance is simple, maintenance costs are low; of course, different areas, maintenance costs are different. In particular, the use of dust-proof self-cleaning nano-coating can effectively reduce the maintenance cost of cleaning. At present, such products are still not perfect, and the previous products have already started testing, including super-hydrophobic nano dust-proof coatings and super-hydrophilic self-cleaning coatings. Suitable for Northwest China and other organically polluted areas.

5. Operation reliability and stability;

6. As a key component, the solar cell has a long service life, and the life of the crystalline silicon solar cell can reach more than 25 years;

7. It is easy to expand the scale of power generation as needed.

Solar photovoltaic power generation systems are widely used. The basic forms of photovoltaic system applications can be divided into two categories: independent power generation systems and grid-connected power generation systems. The main fields of application are in space aircraft, communication systems, microwave relay stations, TV differential turntables, photovoltaic pumps and household power supply in areas without electricity and electricity.

With the development of technology and the need for sustainable development of the world economy, developed countries have begun to systematically promote urban photovoltaic grid-connected power generation, mainly to build residential rooftop photovoltaic power generation systems and MW-class centralized large-scale grid-connected power generation systems, etc. The application of solar photovoltaic power generation systems is vigorously promoted in transportation and urban lighting.