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DC風機的原理 ?

1. DC無刷直流風機省去了勵磁用的集電環和電刷，在結構上大大簡化，不但改善了電機的工藝性，而且電機運行的機械可靠性大為增強，壽命增加。

Brushless DC fan saves the excitation of collector ring and brush,greatly simplifies the structure ;Not only improved the technology of motor but also greatly enhance menchanical reliability of motor operation and increase the service life.

2. DC無刷直流風機采用了永磁體勵磁，消除了感應電機勵磁電流產生的損耗；實現損耗小、效率高和特點；

Brushless DC fan use a permanent magnet exciation, eliminnate the loss of induction motor excitation currents; reailzing the small loss and high efficiency characteristics.

3. 與感應電機的變頻調速相比，DC 無刷直流電機的調速控制不但簡單，而且具有更好的調速性能。控制簡單，可以基本實現良好的調速性。

Compared with the frequency control of induction motor,brushless DC motor is simpler and more controllable, easy to perform control.

4. 逆變器等元器件容量低，電路較為簡單，產品的成本低于EC風機。

The components, such as inverter etc, whose capacity is low,and circuit are simpler . The cost is lower than EC biower’s.