Use of Frequency Converters in Modern Production Automation
In modern production automation systems, frequency converters hold an important place. Their application is extremely useful in many sectors, such as water supply, heating, compressor installations, as well as in ventilation and air conditioning systems.
Thanks to frequency converters, it is possible to easily replace uncontrolled drives equipped with asynchronous motors. This not only simplifies the construction of the mechanical system but also increases its reliability while reducing operational costs. The motor's start after connecting the frequency converter is smooth, which reduces the load on the motor and other mechanisms, as well as extends their service life.
The main advantage of frequency converters is their energy efficiency, which can reach 75%. This has been made possible by reducing the motor's power and eliminating losses during starting currents.
Thyristor Frequency Converters
Thyristor frequency converters are effectively used in regulated drive systems with DC motors, which allow maintaining the required speed under varying loads. However, there is a drawback - the presence of a collector, which complicates their use in dusty or explosive environments. To improve reliability and reduce costs, regulated drives with asynchronous motors are often used.
Areas of Application for Frequency Converters
Regulated electric drives based on frequency converters have a wide range of applications:
- Water and Heating Supply Systems: Frequency converters in pumps ensure the necessary water supply and maintain pressure in the pipes, reducing the risk of hydraulic shocks, water loss, and damage to pipelines.
- Manufacturing: In the processes of producing paper, fiberglass, polymer products that require winding, it is important to precisely control several motors simultaneously to avoid breaks.
- Precise Positioning of Mechanisms: For these tasks, converters with vector control are used, which provide feedback and can operate with full torque at zero speeds.