PWM modulation method of brushless DC motor
Brushless DC motor introduction
The brushless DC motor is composed of a motor body and a driver, and is a typical mechatronic product. A brushless motor is a motor without a brush and a commutator (or collector ring), also known as a commutatorless motor. As early as the birth of the motor in the 19th century, the practical motor produced was the brushless form, that is, the AC squirrel-cage asynchronous motor, which has been widely used. However, asynchronous motors have many insurmountable defects, resulting in slow development of motor technology. In the middle of the last century, transistors were born, so DC brushless motors using transistor commutation circuits instead of brushes and commutators came into being. This new type of brushless motor is called an electronically commutated DC motor, which overcomes the shortcomings of the first generation of brushless motors.
