A fan system includes a fan and a DC motor installed on housing. The motor is collocated to drive the fan.

一种风扇系统包括被装附在外壳上的风扇和DC马达，所述马达被配置成用以驱动所述风扇。

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According to temperature changes of the DC traction motor in continuous operation, the fan motor speed is controlled, and the purposes of regulation of ventilation and energy-saving are achieved.

根据直流牵引电动机在持续运行中的温升变化控制通风机的电动机转速，实现通风量调节，以达到节能目的。

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