What are the characteristics of brushless DC motors? How is the speed regulation method?

The general brushless DC motor is not speed adjustable, usually using PWM method to adjust the speed. Without changing the operating voltage of the motor, change the rated operating voltage at both ends and the motor connection time to achieve speed regulation. For example, the current application of hot brushless small fans, is the use of brushless DC motor for power, so what are the characteristics of brushless DC motor?

Features of brushless DC motor.

1. it can replace speed control of DC motor, speed control of inverter plus inverter motor, speed control of asynchronous motor plus reducer.

2. It has the advantages of traditional DC motors, while eliminating the structure of carbon brushes and slip rings.

3. Brushless DC motor can run at low speed and high power, and can save reducer to drive large load directly.

4. Small size, light weight and large output.

5. Excellent torque characteristics, good torque performance at low and medium speeds, high starting torque and low starting current.

6. Brushless DC motor can be stepless speed regulation, wide speed range and strong overload capacity.

These are the characteristics of brushless DC motor, with the continuous development of technology, brushless motor will become the mainstream trend, relative to the brush motor, its performance is better in all aspects.

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