What is the effect of speed regulation of fan inverter? According to the query materials, in industrial production, the throttling loss of the damper, baffle and other related equipment of the fan, as well as the protection and maintenance costs account for 7%-25% of the production cost.
After the ordinary fan motor selects the fan frequency conversion speed regulation, its speed output can be adjusted according to the requirements of the production process under the condition that the drag load does not need to be changed. As a result, the fan equipment can replace the control plan such as the damper and baffle with the inverter-driven plan, and then reduce the power consumption of the motor to achieve the intention of [high] power operation.
Therefore, after the speed of the fan inverter is regulated, the communication voltage with adjustable output frequency is used as the power supply voltage of the fan, and the speed of the fan can be easily changed.
The mechanical characteristics and power characteristics of the quadratic law load The circuit wiring and function code of the fan frequency conversion speed regulation system The inverter used in the circuit wiring and function code is Aosheng 530H series, the input terminal R, S and T are connected to the power supply through the control electrical appliance, and the output terminal U, V and W are connected to the motor through the electrical appliance, and the reverse connection is not allowed when using. The STF control terminal is the forward rotation starting end, and in order to ensure the one-way forward rotation operation of the motor, the STF is connected to the common terminal SD. The terminals RL and RM are the speed control end of the inverter, which can complete the speed increase and decrease by controlling the on/off of the common terminal SD.
The mechanical characteristics and power characteristic curves of the quadratic law load are shown, and it can be known that when the air volume required by the controlled target is reduced, the speed of the fan inverter is selected to reduce the speed of the fan nL, which will greatly reduce the power consumption of the motor.
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