Brushless DC motors and permanent magnet synchronous motor which is better, has been the topic of many friends like to discuss, but because the two motors know very little, so do not know the specific differences, the following Vacuz to give you an analysis of it! Hope it can help you better understand the two motors.

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In fact, brushless DC motor and permanent magnet synchronous motor not only have some differences in structure, but also have many differences in design concept, mainly in the following aspects:

1, the use of different radio waves. Brushless DC motor for rectangular wave, while the permanent magnet synchronous motor for positive spin wave. Under the same conditions, the former produces a greater degree of counter-electromotive force and more energy;

2. Brushless DC motors are easier to design to meet the performance and usage requirements of the motor. The cost is also relatively low and more practical in production.

3、Unlike permanent magnet synchronous motors, brushless DC motors use self-control operation, which reduces the negative effects of frequency control. At the same time, it makes it vulnerable to shocks and desynchronization when loads occur.

Which is better, brushless DC motor or permanent magnet synchronous motor? What are the differences and differences, after reading the above, I believe you have a basic understanding.

In the process of designing a motor, you need to determine its size and some parameters of the motor design itself, including the number of pole pairs of the motor, the relative number of motors, the length of the air gap and the size of the permanent magnets.

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To meet the accuracy of the engineering design, the comparison of the motor’s magnetic field and motor performance should also be considered. For example, the stator tooth-assisted slot design can effectively reduce the slot torque between the stator and rotor, reduce the motor operation noise, and improve the performance of the whole machine by simulating and analyzing the magnetic density distribution of the brushless DC motor.

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