Several of the most prominent advantages of frequency converter

by:V&T Technologies     2019-11-15
The energy saving of frequency converter is mainly reflected in the application of fan and water pump. After the fan and pump loads are controlled by frequency conversion, the power saving rate is 20% to 60%. This is because the actual power consumption of the fan and pump load is basically proportional to the cubic of the speed. When the average flow rate required by the user is small, the frequency conversion speed regulation is used to reduce the speed of the fan and pump, and the energy saving effect is very obvious. Traditional fans and pumps use baffles and valves to adjust the flow rate. The motor speed is basically unchanged and the power consumption does not change much. According to statistics, the power consumption of fans and pump motors accounts for 31% of the national electricity consumption and 50% of the industrial electricity consumption. It is very important to adjust this load by using a variable frequency speed regulating device. At present, constant pressure water supply, various fans, central air conditioners and hydraulic pumps are more successfully used for frequency conversion and speed regulation. Advantages of inverter (1) Frequency conversion speed regulation saves energy. Due to the frequency conversion speed regulation, the energy saving effect of fan and pump load is the most obvious, and the power saving rate can reach 20% ~ 60%. This is because the power consumption of the fan pump is proportional to the cubic of the rotating speed, the average flow rate is small when the user needs it, the rotating speed of the fan and pump is low, and the energy saving effect is good and considerable. When traditional baffles and methods are used for flow regulation, power consumption does not change much. Since this type of load is about 20% to 30% of the total capacity of AC motors, their energy saving is very important. (2) The advantages of frequency conversion speed regulation in motor operation, frequency conversion speed regulation is easy to achieve positive and negative motors. The output phase conversion can be realized only by changing the switching sequence of the reverse phase tube inside the inverter, and there is no problem of burning the motor due to improper phase conversion. The frequency conversion speed regulation system starts at low speed and has low frequency. The acceleration and deceleration time can be arbitrarily set, so the acceleration and deceleration time is relatively mild, the starting current is small, and a higher frequency can be stopped. (3)Applied to improve process level and product quality. In addition to the application of fans and pumps, variable frequency speed regulation can also be widely used in various mechanical equipment control fields such as transmission, winding, lifting, extrusion and machine tools. It can improve the productivity of abnormal products, prolong the normal working cycle and service life of equipment, simplify the operation and control system, and even change the original process specifications, thus improving the control level of the whole equipment.
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