7. Frequently Asked Questions

For which types of engines are VDFs useful?

The VDF is suitable for various types of electric motors, such as three-phase and DC motors. This equipment is particularly useful in many industries, including construction, manufacturing, agriculture, and transportation.

How does a VDF work?

The VDF consists of a rectifier that converts alternating current into direct current. This direct current is filtered to reduce noise; it is then fed into the inverter to generate variable-frequency alternating current. The amplitude of the ripple determines the frequency of the current applied to the motor, which is achieved by transistors that switch on and off at varying speeds depending on the required frequency.

What is vector control?

Vector control is an increasingly common...