The production of photovoltaic energy for fishing is a new way of producing energy. It combines fishing photovoltaic engineering with photovoltaic power generation technology and realizes solar photovoltaic power generation by constructing a fishing photovoltaic platform with ocean photovoltaic power generation function . The production of photovoltaic energy through fishing has many advantages, for example: it can balance fish production and solar energy production, does not occupy land resources, is not limited by climatic conditions and presents high economic benefits.
Fisheries photovoltaic power generation projects have been built in many regions of China, such as Zhangpu, Fujian and Zhanjiang, Guangdong. The first “fishing and ph” photovoltaic energy production demonstration projectcomplementary otovoltaic” to the world is being built in Zhangpu, Fujian. The project covers an area of approximately 3,000 acres and is comprised of 12 complementary fishing and photovoltaic platforms. 10 million kilowatt hours. The fishing and photovoltaic hybrid power generation project built in Zhanjiang, Guangdong, is covered by photovoltaic power generation panels on the fishing and photovoltaic platform, with annual power generation capacity of more than 4 million kilowatt hours.
Photovoltaic energy production through fishing is a direction for future energy development. It functions both in electricity generation and fisheries production, and can improve the overall use of marine resources. In the future, with continued technological advancements and increased investments, photovoltaic power generation projectsin the fishing sector will be more widely promoted and applied at home and abroad, becoming one of the important means to promote the development of renewable energy.
Solar cell components are the essential components of solar power generation systems that convert light energy into electrical energy. Solar cells are the key components of these essential components. Solar energy is a kind of radiant energy. , which must rely on It can be converted into electrical energy by an energy converter. This energy converter which converts light energy into electrical energy is a solar cell. The basis of the principle of silicon solar cells is the photovoltaic effect of the PN junction of the semiconductor. It is an effect according to which when an object is exposed to light, the state of distribution of charges in the object changes and generates a force and a current.electromotors. When sunlight or other light irradiates the PN junction of a semiconductor, a voltage appears on both sides of the PN junction. This phenomenon is called photovoltage, which is the famous photovoltaic effect. If the PN junction is shorted, a current occurs. be generated. As we all know, atoms of matter are composed of nuclei and electrons. Nuclei are positively charged and electrons are negatively charged. The electrons orbit the nucleus in a certain orbit, just like the planets orbit the sun. The atoms of monocrystalline silicon are arranged according to certain rules. The outermost electronic shell of silicon contains 4 electrons.
The outer electrons of each atom have a fixed position and are bound by the nucleus. When excited by external energy, such as solar radiation, they break away from the chains of the atomic nucleus and become electricfree trons, while leaving free space in their original place, what is called the “hole” in semiconductor physics. . Since electrons are negatively charged, holes appear to be positively charged. Electrons and holes are charges that can move in single crystal silicon. In a pure silicon crystal, the number of free electrons and holes is equal. If the silicon crystal is doped with impurities such as boron, aluminum, gallium and indium that can capture electrons, it will form a hole-type semiconductor, or P-type semiconductor for short . If phosphorus, which can release electrons, is incorporated into a silicon crystal, arsenic or antimony and other impurity elements. It then forms an electronic semiconductor, called an N-type semiconductor. If these two semiconductors are combined, a PN junction will form at the interface due to electron diffusions and holes, and a built-in electric field, also known as the barrier electric field, will form on both sides of the junction. Since the resistance here is particularly high, it is also called a barrier layer. When sunlight illuminates the PN junction, the atoms of the semiconductor release electrons due to obtaining light energy and as a result, electron-hole pairs are generated. Under the action of the barrier electric field, electrons are directed toward the N-type region and holes are directed toward the P-type region, resulting in an excess of electrons in the N-type region. There are excess holes in the P-type region. As a result, a photogenerated electric field opposite the barrier electric field strength is formed near the PN junction.
Part of the photogenerated electric field compensates the barrier electric field, and the remaining part positively charges the typ regione P. The N-type region is negatively charged; thus, the thin layer between the N-type region and the P-type region generates an electromotive force, that is, a photovoltaic electromotive force. When the external circuit is connected, electrical energy will be produced. This is the basic principle of power generation by PN junction contact monocrystalline silicon solar cells. If dozens or hundreds of solar cells are connected in series or parallel, an output power of several tens of watts to more than two hundred watts can be obtained to form a solar cell module. The solar cell module is then connected in series or parallel to form. a solar cell. The square array of batteries can produce enough power for charging.