History of Brushless Motors

The history of motors began with the discovery of electromagnetic phenomena in the early 19th century.
So far, numerous types of motors have been developed including direct current (DC) motors, induction motors, and synchronous motors.

Brushless motors have a long history as permanent magnetic synchronic motors (PMSM), but they have not been used except for industrial applications with expensive control mechanisms due to the difficulties in starting and changing speed.
In recent years, brushless motors have been rapidly developed for a wide range of fields, due to the development of strong permanent magnets, the ease of inverter control by semiconductor elements, and the increased awareness of energy conservation.