The main differences between DC brushed motors and DC brushless motors lie in their working principles, performance, structural composition, speed regulation methods, service life, speed and torque, usage environmental conditions, and motor control and operation methods.

Working principle: A DC brushed motor generates a rotating magnetic field by sliding a carbon brush on a commutator, while a DC brushless motor detects the polarity of the motor rotor, controls the motor's start, stop, and braking through a driver, generates continuous torque, and controls and adjusts the speed. ‌

Performance: The DC brushed motor has a simple mechanism, easy production and processing, higher output power, and higher control accuracy. Brushless DC motors have lower interference, lower noise, longer lifespan, and lower maintenance costs. ‌

Structural composition: The DC brushed motor includes a stator, rotor, brushes, and commutator. A brushless DC motor consists of a motor body and a driver, with the stator winding of the motor mostly made into a three-phase symmetrical star connection, and the driver composed of power electronic devices and integrated circuits. ‌

Speed regulation method: The speed regulation of DC brushed motors is achieved by adjusting the high and low voltage of the power supply, while the speed regulation of DC brushless motors is achieved by changing the control signal of the electric regulator and changing the switching rate of high-power MOS transistors through a microprocessor to change the speed. ‌

Service life: The service life of brushed motors is affected by the commutation system, while brushless motors eliminate mechanical commutation design, greatly extending their service life and reducing maintenance. ‌

Speed and torque: Brushed motors have better starting torque than brushless motors, which can operate at higher speeds. ‌

Environmental conditions for use: The commutation system of brushed motors may generate sparks, causing electromagnetic interference, while brushless motors do not have this problem and are suitable for environments that require high purity. ‌

Motor control and operation: Brushed motors are easy to operate, while brushless motors require additional electronic commutation control equipment and more complex wiring. However, in situations where precise control is required, the costs of control equipment, sensors, and wiring for both are similar. ‌

DC brush motor is a rotating motor with brush device to convert DC electric energy into mechanical energy (DC motor) or mechanical energy into DC electric energy (DC generator). Different from DC brushless motor, brush device is used to introduce or lead in DC voltage and DC current. DC brush motor is the basis of all motors. It has the characteristics of fast start, timely braking, smooth speed regulation in a large range, relatively simple control circuit and so on. BLDC motor, Permanent brush motor.

Composition and classification of DC Brushless Motor, DC Motors

The components of the basic structure of DC brush motor include stator, rotor, brush and commutator. The stator and rotor magnetic fields interact to drive the motor to rotate. The type of Brushless DC motor is divided according to the generation mode of magnetic field in motor stator or housing. Depending on the type of Brushless DC motor, the stator magnetic field can be generated by permanent magnets or windings in the stator. In the latter case, the stator winding and rotor winding can be connected in parallel, serial, or mixed mode. These three kinds of Brushless DC motors are called parallel motor, series motor and compound motor respectively.

Application of DC Brush Motor

DC brush motor has good starting and speed regulation performance, and is often used in occasions with high requirements for starting and speed regulation, such as large reversible steel rolling mill, mine winch, hotel high-speed elevator, gantry planer, electric locomotive, diesel locomotive, urban tram, subway train, electric bicycle, papermaking and printing machinery, marine machinery Large precision machine tools, large cranes and other production machinery.

Brand selection of DC Brush Motor

FBelec has focused on motor production for more than 20 years, with guaranteed quality and low price .