What is the difference between PMSM and BLDC winding?

Dc brushless motor and permanent magnet synchronous motor, many friends like to compare, compare the performance, price, principle of the two, so what is the difference and difference between the two? In what ways? NOYU simple and everyone to introduce it! Hope to help everyone!
 

In fact, for DC brushless motor and permanent magnet synchronous motor, the difference between the two is not big from the structure, the main difference is in these aspects:

1. The difference in definition, brushless DC motor is generally a combination of motor and controller, is a whole, that is, a system, generally also to consider the overall performance, the motor and controller can not complete the work alone; Permanent magnet synchronous motor is a motor, an independent device, can complete the work content separately.

2. In terms of performance and design, the brushless DC motor uses electronic commutation, focusing on the characteristics of the system, such as speed regulation; Permanent magnet synchronous motor focuses on the performance of the motor itself, voltage waveform, power factor, efficiency and so on.

3. In terms of counter-potential waves, generally speaking, brushless DC motors are mainly square waves, while permanent magnet synchronous motors are often sine waves.

4. In terms of control Angle, the brushless DC motor is a system, without too much algorithm, according to the controller and electronic commutation, the rotor position to the winding power; In the variable frequency speed regulation of permanent magnet synchronous motor, there are some algorithms, such as the work of the current.
 

What are the differences between DC brushless motor and permanent magnet synchronous motor? In what ways? The above has made a simple explanation, I hope these little knowledge can help you!