Today, any specialist will confirm that asynchronous motors are the most common type of drive mechanisms. This type of engine is widely used in various machines and mechanisms. Asynchronous motors are distinguished by their high ease of repair and maintenance, cost-effectiveness, and they can be purchased by anyone. However, it should be noted that the use of such devices also has certain drawbacks.
Drawbacks of Asynchronous Motors
Two main drawbacks of asynchronous drive units:
- High starting current, which can exceed nominal values by more than five times. This leads to significant energy costs during startup, placing an additional burden on operating expenses.
- Speed regulation of the shaft is impossible without external devices. The use of mechanical solutions for this, in turn, can increase the load on some elements of the unit, reducing their lifespan.
Frequency Conversion Devices
Frequency converters are devices that change alternating current from one frequency to alternating current of another frequency. The output frequency in modern converters can vary within a wide range, being either higher or lower than the power supply frequency.
A leader in the production of high-quality electric drives is the German company Bosch Rexroth. It offers equipment that changes the output voltage and its frequency. This allows reducing starting currents by more than five times and also provides the possibility of smooth starting of units. In addition, the working speed can be easily adjusted over a wide range without loss of efficiency.
Thanks to the frequency converters from Bosch Rexroth, the consumption of energy resources can be reduced by more than 50%. Operators can also customize control programs for machines and mechanisms, as well as activate automatic drive operation regulation functions.