What does a frequency converter do?

A frequency converter is a device specifically designed to change the frequency of electrical power. This capability is essential in various applications where the electrical supply frequency must be adjusted to meet the requirements of different equipment or systems. For instance, many industrial machines or electric motors operate efficiently at specific frequencies, such as 50 Hz or 60 Hz. By using a frequency converter, the power supply's frequency can be modified so that these devices operate correctly and efficiently, preventing damage and ensuring optimal performance.

The other options do not accurately describe the function of a frequency converter. Converting electrical energy into mechanical energy pertains to motors and generators. Storing electrical energy for later use relates to batteries and capacitors, which are aimed at energy conservation rather than frequency adjustment. Amplifying electrical signals pertains to signal processing and does not involve frequency conversion but instead focuses on boosting strength for better transmission quality. Thus, the critical role of a frequency converter is to ensure the compatibility of electrical power frequencies for various applications.