To date, the continuous development of the electronics industry, many electronic products are used more and more widely, the demand is also increasing. For example: DC cooling fan, then DC cooling fan in the end what are the advantages worthy of businessmen's favor and sought after? Here we introduce the advantages and performance of DC cooling fan:

DC cooling fan advantages:

1, low inverter cost, low inverter capacity

The current when the inverter continues to run, the rated value is said to be the peak value of the rectangular wave, induction motors need sinusoidal wave current, DC motors need rectangular wave current. The current rating when the inverter continues to run generally refers to the RMS value of this sine wave. In order to maintain the inverter's ability to control the motor current, there should be a sufficient difference between the inverter DC voltage and the motor's induced electromotive force. In this case, if we assume that the peak value of DC motor and induction motor current is equal, the former power output is 33% higher than the latter, that is to say, the same rectifier / inverter can be driven than the induction motor power output is 33% higher than the brushless DC motor.

2, High power factor

Its power factor is much higher than that of induction motor, because the excitation field of DC motor does not need the reactive current of the grid. DC motor can run at 1 power factor, which is extremely favorable to the small power motor. Compared with induction motor, DC motor not only has higher efficiency and power factor at rated load, but also has more advantages at light load.

3, Small loss, high efficiency

Eliminate the loss generated by the excitation current of the induction motor, while the permanent magnet DC motor works in synchronous operation mode, because of the use of permanent magnet excitation. Eliminate the rotating frequency loss of the rotor core of the induction motor. These two aspects of the permanent magnet DC motor operating efficiency is much higher than the induction motor, small-capacity motor efficiency improvement is more obvious.

4, Good speed performance, simple control

DC fan speed control is not only simple, compared with the frequency control of induction motors, but also has better speed performance. DC cooling fan of these advantages and characteristics can be very good to make it used in the electronics industry, mechanical equipment. Because of its compactness and convenience and other reasons also make its application more widely.