Lifespan is approximately 20 years.
A solar cell is a device that reacts to light and converts light energy into electricity. There are many types of materials that can produce photovoltaic effects, such as: monocrystalline silicon, polycrystalline silicon, amorphous silicon, gallium arsenide, copper selenium indium, etc. Their principles of energy production are basically the same. Today, crystalline silicon is used as an example to describe the photovoltaic power production process. Crystalline P-type silicon is doped with phosphorus to obtain N-type silicon, forming a P-N junction.
When light irradiates the surface of the solar cell, part of the photons are absorbed by the silicon material; the energy of the photons is transferred to the silicon atoms, causing the electrons to transition and become free electrons. accumulatesent on both sides of the P-N junction to form a potential difference, when the external circuit is connected, under the action of this voltage, a current will flow through the external circuit to produce a certain output power. The essence of this process is: the process of converting photon energy into electrical energy.
Detailed information
1. User solar power supply: (1) Small power supply ranging from 10 to 100 W, used in remote areas Electricity for military and civilian life in areas without electricity, such as plateaus, islands, pastoral areas, posts boundaries, etc., such as lighting, televisions, boom boxes, etc. (2) Domestic roof 3 to 5 kW; grid-connected power generation system; (3) Photovoltaic water pumps: solving problems in areas without electricity. Deep wells for watering andirrigation.
2. Transportation field: such as navigation beacon lights, road/railroad signal lights, warning/signal lights, Yuxiang street lights, high-altitude obstacle lights, highway wireless telephone booths /railroads, route changes without supervision. food, etc.
3. Communication/communication field: unattended solar microwave relay station, optical cable maintenance station, broadcast/communication/messaging power supply system; rural operator telephone photovoltaic system, small communication machine, soldier GPS power supply, etc. .
4. Petroleum, marine and meteorological fields: cathodic protection solar energy systems for oil pipelines and tank valves, standby and standby power supplies for oil drilling platforms, detection equipmention of the oceans, meteorological/hydrological observation equipment, etc. .
You'll know it just by looking at it. It is not easy to describe it clearly using only words.
It's actually very simple: the solar cell converts solar energy into electrical energy (DC) and the inverter inverts the DC power to 50 Hz, 220 V AC alternating current to provide Energy.
The diesel generator is another system. The diesel engine directly drives the alternator to produce electricity. Diesel generators are generally used as backup power sources, that is, when the power grid fails, the diesel engine starts.
The photovoltaic system can be connected to the grid to produce electricity or used as a backup power supply.
Switching between systems is carried out via switching devices.