What are the common speed regulation methods and principles of DC brushless motors

With the rapid development of the motor industry, the use of brushless motors is becoming more and more widespread, especially brushless DC motors, which are widely used in household appliances, new energy vehicles, intelligent office equipment, robots, aerospace, etc., and are favored by customers.

DC brushless motor common speed regulation mode and principle is what? Many friends are not very clear, the following Vacuz briefly introduce it to you! Hope it can help you!

Brushless DC motor speed regulation generally uses voltage regulation. In other words, the power supply voltage is a pulse voltage with adjustable width. When the pulse is very wide, equivalent to a larger DC voltage, power and speed. When the pulse width is reduced, it corresponds to a reduction in DC voltage, power and speed.

Pulse Width Modulation (PWM) is the adjustment of pulse width rather than frequency. The “pulse width” refers to a long high level time, a short low level time, and no change in pulse frequency. Pulse width modulation does not directly adjust the speed of the motor, but changes the power or torque of the motor. When the torque increases, the commutation speed is accelerated and the speed increases.

The above is the DC brushless motor speed regulation mode and principle, master these basics to further understand the DC brushless motor.

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