What is the electricity generation principle of photovoltaic power generation?

Introduction What is the electricity generation principle of photovoltaic power generation? The basic principle of photovoltaic energy production is the “photovoltaic effect”. When a photon hits a metal, all of its energy can be absorbed by an electron in the metal.

What is the electricity generation principle of photovoltaic power generation?

The basic principle of photovoltaic energy production is the “photovoltaic effect”. When a photon irradiates a metal, all of its energy can be absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the internal gravity of the metal to do work, escape from the metal surface and become. photoelectrons.

During the day, high-energy Vcz crystal power generation panels are used to connect to the solar mutual inductance and receive wind power generation 24 hours a day to complement each other . It is received via fully automatic receive conversion. cabinet to directly meet the electrical needs of all household appliances. And passed the inspection by the National Information Industry Chemical and Physical Energy Product Quality Supervision and Inspection Center.

Lighting causes a differenceerence of potential between different parts of a non-uniform semiconductor or a combination of a semiconductor and a metal. Firstly, it is the process of converting photons (light waves) into electrons and light energy into electrical energy; With tension, it's like building a dam high up. If the two are connected, a current loop will form.

: The main principle of photovoltaic power generation is the photoelectric effect of semiconductors. Silicon atoms have 4 outer shell electrons, such as phosphorus atoms, are mixed into pure silicon, it becomes an N-type semiconductor. If atoms with 3 outer shell electrons are mixed into pure silicon . Boron atoms form a P-type semiconductor. When P and N types are combined, a potential difference is formed at the contact surface, becoming a solar cell. When the sunlight irradiates the PN junction, the holes move from the P pole region to the N pole region, and the electrons move from the N pole region to the P pole region, forming an electric current.

After the polycrystalline silicon is cast, broken and sliced, it is transformed into silicon wafers to be processed. Doping and diffusion of traces of boron, phosphorus, etc. on the silicon wafer form a PN junction. Then use screen printing to print the finely prepared silver paste onto the silicon wafer to create grid lines. After sintering, the back electrode is made at the same time, and an anti-reflective coating is applied to the surface with the grid lines. the battery part is It's done. Battery sheets are arranged and combined into battery components to form a large circuit board. Typically, the component is surrounded by an aluminum frame, the front side is covered with glass andthe back side is installed with electrodes. With battery components and other auxiliary equipment, a power generation system can be formed. In order to convert direct current to alternating current, a power converter must be installed. After producing electricity, it can be stored in batteries or injected into the public network. Battery components account for approximately 50% of the cost of a power generation system, and power converters, installation fees, other ancillary components and other expenses account for the remaining 50%.

The main principle of photovoltaic power generation is the photoelectric effect of semiconductors. When a photon irradiates a metal, all of its energy can be absorbed by an electron in the metal. The energy absorbed by the electron is large enough to overcome the internal gravity of the metal to do work, ifescape from the metal surface and become. photoelectrons. Silicon atoms have 4 outer shell electrons, such as phosphorus atoms, are mixed into pure silicon, it becomes an N-type semiconductor. If atoms with 3 outer shell electrons are mixed into pure silicon . Boron atoms form a P-type semiconductor. When P and N types are combined, a potential difference is formed at the contact surface, becoming a solar cell. When sunlight reaches the P-N junction, holes move from the P pole region to the N pole region, and electrons move from the N pole region to the P pole region, forming a current.

Rooftop photovoltaic power generation equipment can also produce electricity in low light. However, in rainy or foggy weather, when solar radiation is weak, the operating voltage of the systemPhotovoltaic power generation system cannot reach the inverter voltage. Starting voltage, the photovoltaic power generation system will not work. Since the grid-connected power generation system is connected to the grid, when the photovoltaic power generation system cannot work, the grid electricity will be automatically replenished, so there is no problem of electricity shortage or power outage in rainy and foggy weather.

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