Brushless DC motors use high-performance permanent magnet materials. Under the same conditions, the motors have smaller size and weight than AC motors. In addition, brushless DC motors have the advantages of high efficiency, good control characteristics, high reliability, long life, and low noise. Due to these advantages, more and more single-phase AC motors have been replaced by DC brushless motors. Compared with single-phase AC motors, the advantages of brushless DC motors are as follows:
Speed control
At present, AC motors usually mention speed control. Brushless DC motors use stepless speed change to widen the speed adjustment range. This will help customers choose the most suitable speed and increase the comfort of the product.
2.Low noise
Brushless DC motors feature low noise, not only during startup but also during normal operation. First, brushless DC motors use DC frequency conversion soft-start technology, which will reduce the starting noise of the motor.Second, brushless DC motors have no brush friction, so they run smoothly and have low noise.
3.Air flow
The brushless DC motor itself has some functions, such as: high starting torque, strong overload capacity, and hard mechanical characteristics. In actual use, the speed of the brushless DC motor is higher than that of the AC motor, and the air flow is also higher.
4. Energy saving
Energy saving has become one of the future design trends of home appliances. Range hoods are devices that are used every day. Although they are not used to a long time each time, due to the low energy efficiency of current AC motors, the energy consumption is still high. Energy saving is a huge improvement space. According to the test results, the same air volume is obtained. The single-phase asynchronous AC motor requires 180 w input, while the brushless DC motor requires only 80 w input. Brushless DC motors are 50% more efficient than AC motors.
