What is the principle of photovoltaic power generation? This is one of the problems of new photovoltaic people for photovoltaic power generation. Photovoltaic power generation is a technology that directly converts light energy into electric energy by using the photovoltaic effect of semiconductor interface. Its key component is solar cell. After the solar cells are connected in series, they can be encapsulated and protected to form a large area of solar cell modules, and then combined with power controllers and other components to form a photovoltaic power generation device.
Principle of photovoltaic power generation
The sun shines on the semiconductor p-n junction to form a new hole electron pair. Under the action of the built-in electric field in the p-n junction, the hole flows from the N region to the p region, and the electron flows from the p region to the N region. After the circuit is connected, a current is formed. This is the working principle of photoelectric effect solar cells.
There are two ways of solar power generation, one is light heat electricity conversion, the other is light electricity direct conversion.
1：The light heat electricity conversion mode generates electricity by using the heat energy generated by solar radiation. Generally, the solar collector converts the absorbed heat energy into the steam of working medium, and then drives the steam turbine to generate electricity. The first process is the light heat conversion process; The latter process is a thermal electric conversion process, which is the same as ordinary thermal power generation The disadvantage of solar thermal power generation is its low efficiency and high cost. It is estimated that its investment is at least 5 ~ 10 times higher than that of ordinary thermal power plants.
2: Light electricity direct conversion mode: this mode uses photovoltaic effect to directly convert solar radiation energy into electric energy. The basic device of light electricity conversion is solar cell. Solar cell is a device that directly converts the solar energy into electric energy due to the photovoltaic effect. It is a semiconductor photodiode. When the sun shines on the photodiode, the photodiode will turn the solar energy into electric energy and generate current. When many cells are connected in series or in parallel, they can become a solar cell array with relatively large output power.
Solar cell is a promising new type of power supply, which has three advantages: permanence, cleanliness and flexibility. Solar cells have long service life. As long as the sun exists, solar cells can be used for a long time with one-time investment; Compared with thermal power generation and nuclear power generation, solar cells will not cause environmental pollution.
Xinpuguang@_Flexible Series solar panel is a new creative solar panel in the solar industry. It uses high-efficiency single crystal solar cells, and its photoelectric conversion efficiency is more than 21% in sunny weather. This flexible solar panel is not only small in thickness, light in weight, easy to carry and transport, but also energy-saving and environmental protection, which is conducive to reducing carbon emissions and improving environmental quality.
As a leading manufacturer in the field of solar energy, Shenzhen Solarparts Inc. has always focused on the research and development of crystalline silicon solar panels and their photovoltaic application products. We have always adhered to the business philosophy of "quality for survival and integrity for development". Our products are well manufactured and our services are considerate. Welcome to learn more about the company and our products through the following contact information:
Phone: +86-13923729619 Fax: +86-755-28720791
WhatsApp: +86-13923729619 Wechat: 13510027129
Email address: Philip@isolarparts.com
Homepage: www.isolarparts.com
