Photovoltaic power generation systems are usually composed of photovoltaic arrays, battery packs, battery controllers, inverters, AC power distribution cabinets, and sun tracking control systems. Many people worry that photovoltaic rooftop power generation is harmful to the human body. In fact, it is not. According to scientific determination, the electromagnetic environment of solar photovoltaic power generation system is lower than the limit of various indicators. What are the specific components of the photovoltaic roof power generation system and whether photovoltaic roof power generation is harmful to the human body, let’s take a look below!
what are the composition of photovoltaic rooftop power generation systems?
The photovoltaic power generation system is composed of solar panels, solar controllers and batteries. If the output power supply is AC 220V or 110V, an inverter also needs to be configured.
1. Solar panels
Solar panels are the core part of the photovoltaic power generation system, and it is also the part with relatively high value in the photovoltaic power generation system. Its role is to convert the radiant energy of the sun into electrical energy, which can be sent to the battery for storage, and can also be used to push the load to work. The quality and cost of solar panels will directly determine the quality and cost of the entire system.
2. Solar controller
The role of the solar controller is to control the working state of the entire system, and to protect the battery from overcharge and overdischarge. Where the temperature difference is large, the qualified solar controller should also have a temperature compensation function. Other additional functions such as light control switches and time control switches should be the functions that solar controllers should have.
Generally lead-acid batteries, nickel-metal hydride batteries, nickel-cadmium batteries or lithium batteries can also be used in small systems. Since the input energy of the photovoltaic power generation system is extremely unstable, it is generally necessary to configure the battery system to work. Its role is to store the electrical energy emitted by the solar panels when there is light, and then release it when needed.
In many cases, it is necessary to provide 220VAC, 110VAC AC power supply. Because the direct output of solar energy is generally 12VDC, 24VDC, 48VDC. In order to provide electrical energy to 220VAC appliances, it is necessary to convert the dc power emitted by the photovoltaic power generation system into AC power, so a DC-AC inverter is required. In some cases, dc-to-dc inverters are also used when loads with multiple voltages are required, such as converting 24VDC energy into 5VDC.
Is photovoltaic rooftop power generation harmful to the human body?
Rooftop photovoltaic power generation is not harmful to people.
Photovoltaic power generation technology is not harmful to the human body. He took solar panels to collect the sun’s energy into electricity as a clean energy source. During use, there are no harmful ingredients to the human body. But his method solar panels, if there is damage and rupture, then the composition inside will be a little harmful to the body.
Photovoltaic power plants in the process of converting solar energy into electrical energy, will not produce any electromagnetic radiation, only when the direct current is converted to alternating current will produce a small amount of electromagnetic radiation, and lower than commonly used household appliances.
According to scientific determination, the electromagnetic environment of the solar photovoltaic power generation system is lower than the limit value of each index. In the power frequency band, the electromagnetic environment of the solar photovoltaic power generation system is even lower than the amount value generated when commonly used household appliances are normally used, which will not affect personal health.