Что лучше - щеточный или бесщеточный двигатель? В чем разница и отличия

Brush motor or brushless motor is good, has been a relatively hot topic, only a word difference between the brush motor and brushless motor in the end what are the similarities and differences?

Brush motor is the basic of all motors, not only has the advantages of fast starting, timely braking, smooth speed regulation and simple control, but also simple structure and low price.

In an electric motor, the rotating part is called “rotor” and the fixed part is called “stator” after being energized, the coil of brush motor is on the rotor and the magnet is on the stator. When the coil is energized, it will be forced to rotate in the magnetic field.

As the most basic type of motor, brush motors rotate when energized and are simple to control. It is the preferred choice for introductory learning. Brushless motors, especially when forward and reverse rotation is required, require more control.

However, brushes are also the culprit for the short life of brushed motors. Due to constant sliding and friction, the brushes are constantly worn. Therefore, brushed motors must have their carbon brushes replaced periodically to maintain proper use.

Brushless motors are electronically commutated, using external electronics to periodically change the current in the coil, thus creating a magnetic force in the correct direction to drive the motor. Small in size, light in weight, fast in speed, but slightly more expensive compared to brushed motors.

In terms of losses, brushless motors are more efficient because they use permanent magnets and there is no core consumption in the rotor, which also reduces motor maintenance and extends the life of the motor.

Brushless motors have a longer life than brushed motors and save power when starting, but the controller costs are higher than brushed controllers.

From the application point of view, brushless motors are more popular. To sum up, brushless motors are better than brushed motors, but both brushed and brushless motors must do a good job of daily maintenance measures so that they can be used for a longer period of time.

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