Brushless DC motors not only maintain the good speed regulation performance of traditional DC motors, but also have the advantages of no sliding contact and commutation sparks, high reliability, long service life, and low noise. Therefore, they have been widely used in aerospace, CNC machine tools, robots, electric vehicles, computer peripherals, and household appliances.

A direct current generator is a machine that converts mechanical energy into direct current electrical energy. It is mainly used as a DC motor for DC motors, electrolysis, electroplating, smelting, charging, and excitation power supply for alternators. Although power rectifier components are also used to convert AC power into DC power in places where DC power is required, in terms of some operating performance, AC rectifier power cannot completely replace DC generators.