The advantage of frequency converters is: high-quality and inexpensive motion control. At least now, the price was not the high price of the European and American corporate rule.
The main industries in which frequency conversion technology is currently used are actually more common. Elevators, lifting machinery, textile machinery, machine tools, HVAC, semiconductors, food, beverages, chemicals, building materials, pharmaceuticals and other industries are important areas that use frequency conversion technology.
Technology trends, from the above enterprise business system, we can see that are working on the servo system. Frequency conversion technology has its own limitations, if in the motor control, the frequency converter is equivalent to a motorcycle, and the servo system is equivalent to a car. (The metaphor is inappropriate, the farewell is complaining).
The principle of frequency conversion technology is actually the switching of current frequency to complete the control of the motor. In our lives, we often hear about inverter air conditioning, which is this concept. According to the reaction of the sensor, the temperature in the city is high, and the rotation speed of the sub-frequency conversion speed control tightening machine is fast, then the output power is large, and the cooling effect is immediate.
When the temperature in the city is within a reasonable range, the speed of the inverter equipment control tightener is slower and the output power is low. This saves energy while maintaining a longer life of the equipment. However, the control of accuracy by frequency conversion equipment is extremely low, so the scope of high precision, speed, and fast response control is required, and the frequency converter cannot be used. Although we say that the central government that can use frequency conversion technology can theoretically use servo control, but the servo price is expensive, and many central servos are costing resources.