Frequency Converter
A frequency converter is a device that regulates the rotation speed of an electric motor operating on alternating current. It is often referred to as an inverter. As the name suggests, the main task of this device is to convert the standard voltage frequency of 50 Hz into three-phase voltage with frequencies ranging from 0.2 to 400 Hz and even more. The simplicity and reliability in operation provide significant advantages of using such a drive, and the wide range of available technical solutions allows for the selection of an inverter for any industry.
Types of Control for Frequency Converters
- Frequency converters provide several types of control:
- Vector control - the control depends on the current strength, feedback is required to monitor the speed;
- Scalar control - frequency change occurs in small increments to avoid overshooting;
- Direct torque control - achieved by changing the speed and current parameters.
Main Tasks of a Frequency Converter
The main task of using a frequency converter in systems is to achieve smooth speed regulation of the asynchronous motor. These power units have found application in elevator systems, compressors, pumps, fans, etc. Thanks to the indication, it is possible to monitor current strength, output frequencies, voltage, operating time, errors, and other parameters. Modern frequency converters easily adapt to any system due to additional controllers and boards. The use of an inverter allows for increased efficiency of installations and savings in electricity.
Areas of Application for Frequency Converters
Frequency converters are actively used in various fields. They contribute to increasing the accuracy of processing parts on machines, and allow for smooth speed adjustments of conveyor belts. This is just a part of the fields where frequency converters are used. With precise technology, both economic benefits in the form of increased productivity and savings in electricity can be achieved. Here are some positive qualities of frequency converters:
- Uninterrupted operation of electrical equipment;
- Improvement of production process quality;
- Simplicity in equipment setup;
- Electricity savings of up to 40%;
- Increased operational lifespan of components due to high dynamic accuracy;
- Safe operation of power installations without the need for constant oversight by the operator.
Frequency converters have gained popularity in the Ukrainian market due to their numerous positive qualities.