The permanent magnet synchronous motor has the advantages of simple structure, small size, high efficiency and high power factor. At present, permanent magnet synchronous motors have been used in the metallurgical industry (ironworks and sintering plants, etc.), ceramics industry (ball mill), rubber industry (internal mixer), petroleum industry (pumping unit), textile industry (two-for-one twister, spinning machine) Machine) and other industries in the medium and low voltage motors to obtain performance, and gradually accumulate experience in design and operation.

The permanent magnet synchronous motor is because it has the following advantages compared with the AC asynchronous motor:

1. High efficiency and more power saving. Compared with three-phase asynchronous motors, permanent magnet synchronous motors not only have higher efficiency at the rated power point, but also have higher average efficiency over the entire speed range. The excitation magnetic field of the permanent magnet synchronous motor is provided by the permanent magnet, the rotor does not need the excitation current, and the motor efficiency is improved. Compared with the asynchronous motor, the electric energy is saved at any speed point, especially when the speed is low. This advantage is particularly obvious. Simply put, permanent magnet synchronous motors are more power-efficient and help to increase the driving range of electric vehicles.

2. Greater starting torque, less noise and lower temperature rise. Permanent magnet synchronous motors generally adopt asynchronous starting mode. Since the rotor winding does not work when the permanent magnet synchronous motor is working normally, when designing the permanent magnet motor, the rotor winding can fully meet the requirements of high starting torque. times up to 2.5 times, or even larger.

3. Small in size and light in weight, it is beneficial to reduce the weight of vehicles and reduce the energy consumption of electric vehicles. Due to the use of high-performance permanent magnet materials to provide a magnetic field, the air gap magnetic field of the permanent magnet motor is larger than that of the induction motor, and the volume and weight of the permanent magnet motor can be greatly reduced compared with the induction motor. For example, the 11kW asynchronous motor weighs 220kg, while the permanent magnet motor is only 92kg, which is equivalent to 45.8% of the weight of the asynchronous motor.

Shandong Xinda Motor Co., Ltd. focuses on the design, customization and manufacturer of asynchronous start permanent magnet motor | permanent magnet synchronous motor | DC brushless motor | permanent magnet electric drive system. Provide fan EC motor | permanent magnet synchronous motor | pump motor products. According to the actual needs of users, we can provide high-performance, high-efficiency motors and electric drive products that meet the energy efficiency of IE4 and IE3, and GB level 1 and level 2 energy efficiency.