Why does rare earth permanent magnet air compressor save energy?
Why do rare earth permanent magnet motors save energy
The energy-saving advantages of rare earth permanent magnet motors are as follows:
In recent years, the high-profile permanent magnet motor industry has become increasingly popular. According to the analysis of the editor, the reason why permanent magnet motors have received great attention cannot be separated from the strong support of relevant national policies. High efficiency and ultra efficiency motor products represented by high-efficiency permanent magnet motors can quickly be popularized, helping to save energy and reduce emissions, and retaining green mountains and rivers. Energy conservation and environmental protection are bound to be the development trend in the future, especially in the motor industry. The energy-saving characteristics of permanent magnet motors show their advantages, with energy saving rates higher than 20%. The specific advantages of rare earth permanent magnet motors in energy conservation are as follows:
Three components of rare earth permanent magnet motor
1. Rare earth permanent magnet motors use high-performance permanent magnets that eliminate current excitation in the stator or rotor portion of the motor, thereby eliminating copper losses (winding heating losses) in this portion;
2. The mechanical loss of the brushless structure and the carbon brushless structure is adopted, but the brushless motor realizes commutation through the electronic commutation structure. Here, the loss of some electronic components is smaller compared to the mechanical loss omitted, so the loss of the commutation part is smaller than that of the brush motor;
3. Using high-performance rare earth permanent magnets can reduce the size of the motor under the same rated power and rated speed, saving the silicon steel sheet of the motor, and reducing a portion of iron loss. The efficiency of small power motors using rare earth permanent magnet motors can reach nearly 90%, and the average motor is about 75%.
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