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Professional manufacturing and production of radiator cooling fans, condenser fans and fan motors, etc.

Method for adjusting speed of cooling fan

Method for adjusting speed of cooling fan

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u003cbru003e There are two ways to adjust the motor: voltage regulation and frequency regulation. Ordinary fans with brush motors can change the speed through voltage regulation, while fans with variable frequency motors can only be adjusted through frequency regulation. For a brushed motor, changing the power supply voltage means changing the current in the rotor winding to change the magnetic field strength and torque. The motor speed increases with the increase of torque, and decreases with the decrease of torque. When the load resistance of the motor increases, the motor speed will decrease accordingly. To maintain the same speed when the load changes, closed-loop control must be adopted, which is realized through negative speed feedback, so the control circuit is more complicated. Wenling Tongchi Automobile Air Conditioning Manufacturing Co., Ltd. specializes in producing cooling fans

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