The Development Of Brush Motors And Brushless Motors
As early as the nineteenth century when the motor was born, the practical motor produced was a brushless form, that is, an AC squirrel-cage asynchronous motor, which was widely used after alternating current was generated. However, asynchronous motors have many insurmountable defects, so that the development of motor technology is slow. In particular, brushless DC motors have not been able to be put into commercial operation. With the rapid development of electronic technology, they have only been put into commercial operation until recent years. In essence, they still belong to the category of AC motors.
Soon after the brushless motor was born, people invented the DC brush motor. The DC brush motor has a simple mechanism, easy production and processing, easy maintenance, and easy control; the DC motor also has a fast response, a large starting torque, and can provide rated torque from zero speed to rated speed, so once it came out It has been widely used.