The principle and application of brushless DC motor.
Brushless DC motors have been around for decades. The biggest difference between brushless motors and brushed DC motors is that brushless motors do not use electric brushes.
During the commutation process, electric brushes are used in DC motors to switch the current from the coil to the coil, generating torque to rotate the rotor and add additional load. This process is mechanical because the brushes actually slide on the commutator to switch between the motor coils.
On the other hand, brushless motors rely on electronic devices to complete commutation tasks. Electronic switching of current to brushless DC motor coils is more effective than mechanical switching of DC motors. Moreover, with the passage of time, there is no wear and tear, no replacement of brushes or commutators, and no sparks at the interface of brush commutators. As a result, compared to brushed motors with similar rated output power, brushless motors are essentially maintenance free, produce low electrical noise, can operate at higher voltages, have higher efficiency, and can become more compact.
Usually, brushless DC motors are mainly used for general commercial and industrial applications, especially those where you do not want or need precise control of the motor speed or its position. Unless the driver is built into the motor, all brushless DC motors require accompanying driver electronic components.
Brushless DC motors are an ideal choice for powering pumps, fans and blowers, compressors, and other similar commercial or industrial applications where long lifespan, maintenance free, compact size, and electrical efficiency are important in design. These electric motors are an ideal choice for battery powered equipment, and the increased efficiency of these devices can significantly improve battery life.
