The Purpose Of The Inverter in The Industrial Field Is Described in Detail

1.Frequency conversion speed regulation is used for energy saving, and the load of fans and pumps can reach 10%-30% energy saving rate, and the maximum energy saving rate can reach 60%. This is because the actual power consumption of the fan and pump load is approximately proportional to the cubic speed. In recent decades, the application of energy-saving inverter has developed rapidly, according to the statistics of relevant parties, China has implemented the transformation of the fan, pump capacity only accounts for about 5% of the total capacity, there is still a lot of room for transformation. In this regard, the use of frequency conversion speed regulation for negative cutting of fans and pumps can save a lot of electrical energy, and the investment can be recovered in a relatively short time, so it is the most widely used. The more successful applications include constant pressure water supply, various types of fans, central air conditioning, and hydraulic pump frequency conversion speed regulation.

2. Precision controlWith the development of control technology, in addition to the basic speed control, the inverter also adds a variety of calculation and intelligent control functions, and its output accuracy is between 0.1% and 0.01%. The converter is also equipped with perfect detection and protection links, so it is widely used in printing, elevators, textiles, machine tools, speed control on the production line and other automation systems.

3. To improve the process level and product quality, the inverter is also widely used in the control field of various mechanical equipment such as conveying, lifting, extrusion, machine tools, etc., which can improve the process level and product quality, reduce the impact and noise of the equipment, and prolong the service life of the equipment. After these machines are controlled by frequency conversion, the mechanical equipment can be simplified, the operation and control are more humanized, and some of them can change the original process specifications, thereby improving the function of the whole equipment.

4. New energy generates electricity with the increase in the power of wind turbines, and the blades of wind turbines have weighed several tons or dozens of tons. It is quite difficult to maneuver such a large moment of inertia to keep up with the changes in wind speed in response to speed requirements. In recent years, variable pitch wind turbines have been put into operation, on the one hand, by controlling the blade angle by variable pitch, and on the other hand, by controlling the rotor current of the generator through the fan inverter to control their rotational speed. Pitch control is a relatively slow process, and its action time is calculated in seconds, which is not ideal for the situation where the wind speed and power output change quickly, while the action time of the inverter to control the current frequency of the generator rotor is below the millisecond level.

Therefore, when the high-frequency wind speed changes, the generator rotor current frequency can ensure that the generator set can keep up with the frequent changes of wind speed through the instantaneous change of the high-power heavy-duty inverter, so that the power output of the generator set is stable, reduce the adverse impact on the power grid, and at the same time reduce the working frequency of the pitch mechanism and prolong the service life of the pitch mechanism.