Brushless DC motor is a new type of DC motor developed in recent years with the development of microprocessor technology, the application of new power electronic devices with high switching frequency and low power consumption, the optimization of control methods, and the emergence of low-cost, high magnetic energy level permanent magnet materials.

DC motor refers to a rotating motor that can convert DC electrical energy into mechanical energy (DC motor) or convert mechanical energy into DC electrical energy (DC generator). It is a motor that can convert DC electrical energy and mechanical energy into each other. When it operates as a motor, it is a DC motor that converts electrical energy into mechanical energy; When operating as a generator, it is a DC generator that converts mechanical energy into electrical energy.