The main device of the wind turbine mechanism is the permanent magnet, which is a special magnet with strong permanent magnetic properties. Before the invention of wind turbines, the main source of electricity was fossil fuels such as coal and oil. Although these are very useful, they have a major drawback, they emit alarming amounts of carbon dioxide, which is toxic to both humans and the environment. Therefore, permanent magnets have been widely used in wind turbines.

The core principle is to use the strong magnetic properties of permanent magnets such as NdFeB magnets. NdFeB magnets are a type of rare earth magnets that are widely used in wind turbines to reduce costs, improve reliability, and greatly reduce the need for ongoing maintenance.

Wind turbines work based on electromagnetic phenomena, following the law of electromagnetic induction proposed by Michael Faraday in 1831. When the blades of the turbine rotate with the wind, the permanent magnets inside the turbine generate a magnetic field and generate electrical energy through electromagnetic induction; this electrical energy is converted into usable electricity by a generator connected to the shaft of the wind turbine.

Unlike traditional power generation methods, permanent magnets in wind turbines do not require the use of slip rings used in electromagnets, but instead use the magnetic field of strong rare earth magnets to achieve the power generation process.

Advantages：
1. The main characteristic of permanent magnetic materials is that they have a constant magnetic field and can generate a magnetic field without an external power supply. This characteristic makes them widely used in wind power equipment. In wind power generation systems, generators are the core components, and permanent magnet generators are widely used in wind power equipment due to their simple structure, high efficiency, and easy maintenance.

2. The efficiency of permanent magnet generators is higher than that of traditional electric excitation generators. Since permanent magnet materials can provide a stable magnetic field, the electromagnetic conversion process of the generator is more efficient, thereby improving the conversion efficiency of wind energy. In today's increasingly tight energy situation, improving the efficiency of wind energy utilization is of great significance to promoting the development of renewable energy.

3. The small size and light weight of permanent magnet generators are a significant advantage for wind power equipment. Wind turbines are usually installed on high towers. The miniaturized and lightweight design can reduce the difficulty of transportation and installation of the equipment, while also reducing the load-bearing pressure on the tower and improving the stability of the overall system.

4. The application of permanent magnet materials in wind power equipment is also reflected in its excellent dynamic performance. The torque response speed of permanent magnet generators is fast, and they can quickly adapt to changes in wind speed to ensure the stability and reliability of power output. This is of great value for grid access and power quality control.