With the rapid development of modern science and technology, PMSM, with its own advantages, quickly occupy the market and ultimately surpass the ordinary motor. So what are the characteristics of PMSM and the difference between the ordinary motor? Compared with the traditional electricity field motor, the PMSM of the PMSM Fan, especially the rare earth PMSM, has the advantages of simple structure, reliable operation, small volume, lightweight, a slight loss, high efficiency, flexible shape, and size of the motor, etc. Therefore, it is widely used in aerospace, national defense, industrial and agricultural production, and daily life.
1. High power density. It mainly refers to the PMSM with small volume, large power generation, or output power. Compared with the traditional motor, any speed point can save electric energy, especially when the speed is low. This is because the permanent magnet provides the excitation field of the PMSM, and the rotor does not need the excitation current, which improves the motor's efficiency.
2. Starting torque. The PMSM ceiling fan adopts an asynchronous starting mode, but the PMSM usually works. Therefore, when designing the PMSM, the rotor winding can fully meet the high starting torque requirements, for example, from 1.8 to 2.5 times or even higher.
3. Lightweight and small volume. The PMSM of the PMSM Fan uses a permanent magnet material with high performance to supply the magnetic field so that the air-gap field of the PMSM is greatly enhanced compared with the induction motor, and the volume and weight of the PMSM are significantly reduced compared to with the induction motor.
4. The failure rate of the PMSM is low and widely used. Due to the use of high-performance rare earth permanent magnet materials to provide a magnetic field, the failure rate is lower, and the use is more common.
Source: Gaxiaofan Press Department
Publication Date: 5/29/2020
