A brushless DC motor is a synchronous motor whose rotor is composed of magnets and rotates by controlling the current on the stator. BLDC motors do not have brushes or brush rings, and the magnets on the rotor are controlled by electronic components. Therefore, BLDC motors have the advantages of high efficiency, high reliability, and low noise.

Recently, brushless motor controllers have been widely used in various fields, and their characteristics such as high efficiency, low noise and reliability are favored. This paper introduces the structure principle and characteristics of brushless motor controller.

A brushless motor controller is an electronic device used to control and drive the operation of a brushless motor. It controls the speed, direction, start stop and other operations of the motor through electrical signals, and is widely used in fields such as automobiles, drones, and industrial automation.