What are the advantages of a dc cooling fan? Next, I will introduce the advantages and properties of the dc cooling fan:
Advantages of dc cooling fan:
1. Low inverter cost and low inverter capacity.
The induction motor needs the sine wave current, and the dc motor needs the square wave current. The current rating of the inverter is generally referred to as the valid value of the sine wave. In order to hold the inverter to control the current of the motor, there should be enough difference between the dc voltage of the inverter and the induction electromotive force of the motor. In this case, if the assumption of dc motor and induction motor current peak is equal, is 33% higher than that of the former power output than the latter, that is to say, the same rectifier/inverter to drive more than 33% higher than that of induction motor output power brushless dc motor.
2. High power factor.
The power factor is much higher than the induction motor, because the excitation magnetic field of the dc motor does not need the reactive current of the power grid. The dc motor can operate at 1 power factor, which is extremely beneficial to small power motors. Compared with induction motor, the motor has higher efficiency and power factor than the rated load, and has an advantage in light load.
3. Small loss and high efficiency.
It eliminates the loss caused by induction motor excitation current, and the permanent magnet dc motor works in synchronous operation mode, because the permanent magnet excitation is adopted. The rotation loss of rotor core of induction motor is eliminated. In these two aspects, the operation efficiency of permanent magnet dc motor is much higher than that of induction motor, and the efficiency of small capacity motor is more obvious.
4. Good speed regulation and simple control.
The speed regulation control of dc fan is not only simple, it has better speed regulation performance compared with the frequency control of induction motor.
These advantages and characteristics of the dc cooling fan can be applied to the electronics industry and mechanical equipment. Because of its small and convenient reason also makes its application more extensive.
The above is the advantage and performance of dc cooling fan, more relevant knowledge, can consult our technical personnel.
