DC power input via DC fan, so that the DC motor rotates to drive the fan impeller rotation, enabling DC power to mechanical energy conversion process, said fan DC fan. DC fan biggest feature is the optional DC motor.
1, low loss, high efficiency
Because the use of a permanent magnet excitation eliminates the induction motor excitation currents losses; while permanent magnet brushless DC motor is operating in synchronous operation mode, eliminating the transfer frequency induction motor rotor core loss. Both make efficiency permanent magnet brushless DC motor is much higher than induction motors, small motors to improve efficiency even more apparent.
2, high power factor
Since the reactive current excitation magnetic brushless DC motor does not need the grid, so the power factor is much higher than induction motors, brushless DC motors can run at a power factor, which is extremely beneficial for small power motors. Brushless motors and induction motors have higher efficiency and power factor, not only when compared to the rated load and light load has more advantages.
3, speed performance, simple control
Compared with the frequency control induction motor speed control of brushless DC motor is not only simple, but also has better speed performance.
4, the inverter capacity is low, so low-cost inverter
Brushless DC motor requires a rectangular wave current, continuous current rating of the inverter run-time refers to the peak of the rectangular wave. Induction motors require sinusoidal current, the current rating of the inverter continuous run-time generally refers to the sine wave RMS. In order to maintain the inverter to control the motor current, DC voltage between the inverter and the motor EMF should be sufficient difference. Therefore, the brushless DC motor and trapezoidal EMF induction motor sine wave induced electromotive force can be achieved are limited peak inverter DC voltage.
Learn Wind Motor Co., Ltd. is the development, production and sales as one of the limited liability company, located in the scenic mountain city of Chongqing, is mainly engaged in the suction fan, axial fans, centrifugal fans, industrial fans, cooling fans, axial flow fan , explosion-proof fans, ventilation fans and other large-scale production, manufacturing and sales, the company brought together professional and technical personnel, has a wealth of experience and strong technical development efforts.