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Energy saving effect of frequency converter for fan and water pump

2023-05-20 13:37:59

The frequency converter is widely used in petroleum, chemical industry, light industry, papermaking, rubber, electric power, metallurgy and many other industries. The speed regulation and energy saving of frequency converter improves the technological level and energy-saving resources for enterprise production. It has played an important role in energy conservation and environmental protection, and plays an important role in technological transformation and product upgrading of enterprises. The following describes the application of frequency converter in fan water pump:


Fan and pump load is a typical square torque load. Generally, fan and pump load is selected according to the demand of full load. In practical application, most of the time is not in full load state. Therefore, as long as the average speed is slightly reduced, the load power will decrease rapidly, so as to achieve energy saving effect.


However, when the motor is directly started, due to the speed can not be adjusted, the Wind Damper and valve are often used to adjust the air volume or flow, which not only causes energy waste, but also causes grid Impact and equipment vibration and water hammer phenomenon due to excessive starting current.


When the frequency converter is used, the speed can be easily controlled according to the actual process requirements. For example: when the motor speed is 80% of the rated speed, the load power is the third power of the rated power (80%), that is about 50%. It can be seen that the speed is reduced by 20%, and the energy saving is more than 40%. At the same time, the closed-loop constant voltage control can be easily realized, and the energy-saving efficiency will be further improved. The use of frequency converter can avoid the impact on the power grid when starting, reduce the equipment failure rate, eliminate the vibration and water hammer phenomenon, prolong the service life of the equipment, and reduce the capacity requirements and reactive power loss of the power grid.


General purpose frequency converter


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