High speed brushless motor speed control method

 15/03/2021| View:505
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High speed brushless motor speed control method

There are generally three methods for controlling the speed of a high speed brushless motor. Let's take a look below.

1. Adjust the armature voltage. The speed of the high speed brushless motor is changed by changing the armature voltage. This method has a fast dynamic response and is a constant torque speed regulation method, which is suitable for a wide range and stepless smooth speed regulation system.

2. Change the main magnetic flux of the high speed brushless motor. Although changing the main magnetic flux of the motor can control the speed, because it can only weaken the magnetic flux, this method can only change the speed of the DC motor from the rated speed. It is a constant power speed control method, and the dynamic response is slow, although it can be steplessly smooth Speed regulation, but the range of speed regulation is not large.

High speed brushless motor speed control method


3. Change the resistance R of the armature circuit. The speed is adjusted by changing the external series resistance of the high speed brushless motor armature. This method can only adjust the speed step by step, and has poor smoothness, soft mechanical characteristics, and low efficiency.

In summary, do you know the speed control method of high speed brushless motor?